WO2011147200A1 - Touch-control interferometric modulation display - Google Patents

Touch-control interferometric modulation display Download PDF

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Publication number
WO2011147200A1
WO2011147200A1 PCT/CN2011/070156 CN2011070156W WO2011147200A1 WO 2011147200 A1 WO2011147200 A1 WO 2011147200A1 CN 2011070156 W CN2011070156 W CN 2011070156W WO 2011147200 A1 WO2011147200 A1 WO 2011147200A1
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WO
WIPO (PCT)
Prior art keywords
display
touch
electrode line
driving
signal
Prior art date
Application number
PCT/CN2011/070156
Other languages
French (fr)
Chinese (zh)
Inventor
陈其良
刘海平
Original Assignee
智点科技（深圳）有限公司
智点科技有限公司
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Filing date
Publication date
Application filed by 智点科技（深圳）有限公司, 智点科技有限公司 filed Critical 智点科技（深圳）有限公司
Priority to TW100102399A priority Critical patent/TW201229644A/en
Publication of WO2011147200A1 publication Critical patent/WO2011147200A1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/3466—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on interferometric effect

Definitions

  • the present invention relates to an interferometric modulation display and a touch screen, and more particularly to a touch sensitive interferometric display. Background technique
  • Touch screen development has been widely used in many fields such as personal computers, smart phones, public information, smart home appliances, industrial control, and the like.
  • touch field there are mainly resistive touch screens and books.
  • the display screen and the touch screen are pairs of products.
  • the display screen and the touch screen are usually independently responsible for display and touch tasks.
  • the discrete flat panel display with touch function is composed of a display screen, a display driver, a touch screen, a touch signal detector, a backlight, and the like.
  • the touch screen has a resistive type using different sensing principles. Capacitive, electromagnetic, ultrasonic and photoelectric, etc., the display has passive liquid crystal display (TN/STN-LCD), active liquid crystal display (TFT-LCD), organic light-emitting diode display (0LED, AM_0LED) , plasma display (PDP), carbon nanotube display, e-Paper, etc.
  • a flat panel display with a touch screen laminates the split touch screen with the display screen, detects the planar position of the touch point through the touch screen, and causes the cursor on the display screen to follow the touch point.
  • the cascading of the touch screen and the display screen makes the touch panel display thicker and heavier and the cost increases; when the touch screen is placed in front of the display screen, the reflection generated by the touch screen sensing electrode causes the display to be uneven and strong. The contrast is reduced in the external light environment, which affects the display effect. Integrating the touchpad and the display to make the flat panel display with touch function lighter and thinner is the direction of people's efforts.
  • the booklet respectively discloses a connection manner between the touch detection circuit and the display electrode, and the display electrode transmits the display drive signal through the analog switch or the load circuit, and transmits and senses the touch signal, the display drive and Touch detection time division multiplexing or simultaneous sharing of display electrodes, display electrodes are used for both display driving and touch detection; application number 200810133417X, the name of "a touch type flat panel display” Chinese invention patent specification, Further, a method for applying and detecting a touch signal of a touch panel display is disclosed, which avoids crosstalk of the touch signal and improves the detection speed; the application number is 2009102035358, and the name is "a drive realization of a touch panel display”
  • the basic working principle of the touch panel display disclosed in the above Chinese patent is that two sets of intersecting electrodes on the display screen are used as the touch sensing electrodes, and the electrode lines of the electrode group are connected to the touch excitation source, and the touch The control excitation source applies a touch excitation signal to the electrode lines.
  • the touch circuit detects the position of the finger or other touch object on the display screen by detecting the change of the touch signal of each electrode line.
  • Interferometric Modulation Display uses the interference effect of physics, which can produce bright colors with a small amount of power and can be clearly seen under the scorching sun.
  • the basic unit of the IM0D display is a tiny structure with two mirrors sandwiching a gap that determines the color that is reflected when the light illuminates the display.
  • the IM0D display is compatible with the current manufacturing technology of liquid crystal display (LCD), and its photoelectric characteristics make it possible to eliminate the complicated process of manufacturing a thin film transistor display, and eliminate the need for color filters and polarizers such as LCD light limiting. element. Since the IM0D display is a light-reflecting modulation display, it has many advantages such as good visibility, wide viewing angle, high reflectivity, bistable memory function, low power consumption, etc. in a strong light environment, making it portable display The field has unlimited prospects.
  • LCD liquid crystal display
  • the present invention is directed to an interferometric modulation display, and proposes a touch-sensitive interferometric modulation display in which an interference modulation display screen and a touch screen are combined into one by using two sets of intersecting electrode lines on the display screen as the touch sensing electrode lines.
  • the invention is to realize the touch function directly in the interference modulation display, combine the interference modulation display screen and the touch screen, and propose a touch signal characteristic of the touch type interference modulation display, and the touch signal application and A scheme for detecting timing.
  • a touch type interference modulation display comprising an interference modulation display screen and a driving circuit; wherein a row electrode group of not less than two sets of m row electrode lines and a column electrode group of n column electrode lines are disposed on a substrate of the display screen And mX n display pixels, the row electrode group and the column electrode group are respectively connected to one of the two electrodes of each display pixel, and the electrode lines between the two groups of electrodes intersect each other, and the electrode lines in the same group do not intersect each other, wherein m, n is a natural number greater than 2; the driving circuit includes a display driving circuit, the display driving circuit applies a display driving signal to the two sets of electrode lines, and drives each pixel to be in a set display state; the driving circuit further includes a touch circuit, The touch circuit has a touch excitation source and a touch signal detection circuit; in a certain period of time when the display screen is in a display state, the driving circuit superimposes the touch signal of the AC component generated by the touch excitation source on the display driving
  • the driving circuit is at least one row electrode line and a plurality of column electrode lines, or at least one of the interference modulation display screen
  • the column electrode line and the plurality of row electrode lines simultaneously apply display driving signals for superimposing the touch signals.
  • the driving circuit is a display driving signal for simultaneously applying a superimposed touch signal to all of the row electrode lines and all the column electrode lines of the interferometric display screen.
  • the touch signal superimposed on the display driving signal of the row electrode line and the touch signal superimposed on the display driving signal of the column electrode line are the same frequency, the same phase, and the equal amplitude.
  • the value of the AC signal is the same frequency, the same phase, and the equal amplitude.
  • the touch signal detecting circuit detects a change of a touch signal on a display electrode line, and detects all electrode lines or partial electrode lines of the display screen.
  • the touch signal detecting circuit detects a change in a touch signal on a part of the electrode lines of the display screen, and detects an electrode line at a position where the display screen has an operable display element.
  • the display screen is in a certain period of time when the display screen is in the display state, and the display screen is in a certain period of time during the hold driving period, during which the touch signal is superimposed.
  • the display driving signal is applied to the row electrode line and the column electrode line, and the voltage difference between all the row electrode lines and all the column electrode lines is within the range of the holding voltage value.
  • the display driving signal for superimposing the touch signal is applied to the electrode line during the display driving period, and detecting the change of the touch signal on the electrode line; It is performed every time the driving period is maintained, or may not be performed every time the driving period is maintained; during the holding driving period of the touch signal change detection, one detection may be performed, or multiple detections may be performed. .
  • the display screen is in a certain period of time when the display screen is in the display state, and the display screen is in a certain period of time during the address driving period, during which the overlay touch is performed.
  • the display driving signal of the signal is applied to the row electrode line and the column electrode line, and the displayed row electrode line displays the display pixel whose target is open, and the voltage difference between the row electrode line and the column electrode line is open.
  • the displayed row electrode line display the display pixel whose target is collapsed, and the voltage difference between the row electrode line and the column electrode line is collapsed
  • the range of the state voltage value let the voltage difference between the row electrode line that is not addressed and the column electrode line be within the range of the hold voltage value.
  • the display driving signal for superimposing the touch signal is applied to the electrode line during the address driving period of the display screen, and detecting the change of the touch signal on the electrode line; It may be performed in each address driving period, or may not be performed in each address driving period; in the address driving period in which the touch signal change detection is performed, it may be performed once, or may be Perform multiple tests.
  • the technical solution disclosed by the present invention proposes to use an interference modulation to modulate an existing display electrode line on the display screen as a touch sensing electrode line, apply a touch signal to the display electrode line, and avoid affecting the display driving voltage, thereby making interference modulation.
  • the display adds a very important touch function without losing its display characteristics at all.
  • IM0D the reflective surface of the resistive or capacitive touch screen is not required to be placed in front of the display screen, and the electromagnetic touch screen is not required to be disposed behind the display to realize the combination of the display screen and the touch screen.
  • a touch-sensitive interferometric modulation display is not required to be placed in front of the display screen, and the electromagnetic touch screen is not required to be disposed behind the display to realize the combination of the display screen and the touch screen.
  • the touch type interference modulation display also has a great advantage in cost.
  • FIG. 1 is a schematic diagram of electrical connections according to a first embodiment, a second, a third, and a fourth embodiment of the present invention
  • FIG. 2 is a driving waveform diagram during a period in which the touch detection period is not performed during a driving period of the present invention
  • 2b is a driving waveform diagram during a touch detection period during a hold driving period according to an embodiment of the present invention
  • FIG. 3 is a working timing distribution diagram of a first embodiment of the present invention.
  • FIG. 4 is a working timing distribution diagram of a second embodiment of the present invention.
  • FIG. 5 is a working timing distribution diagram of a third embodiment of the present invention.
  • FIG. 6 is a driving waveform diagram of a four-address driving period according to an embodiment of the present invention.
  • 7 and 8 are two operation timing distribution diagrams of a fourth embodiment of the present invention. detailed description
  • the interferometric modulation display is a micro-electromechanical system (Micro-Electro-Mechanical System, MEMS), the basic structure of the display pixel is a glass substrate covered by a film, the substrate has a transparent conductive electrode, and a reflective conductive membrane covering the substrate, the diaphragm and the glass substrate pass through Air gap isolation.
  • MEMS Micro-Electro-Mechanical System
  • the pixels are bright, the incident light is interfering with color between the reflective diaphragm and the glass substrate air gap; a voltage is applied to the electrodes on the glass substrate and the electrodes on the diaphragm, and the diaphragm is electrostatically attracted.
  • Collapsed State Collapsed State
  • the interference of the light causes the pixel to become black.
  • the MEMS drive is fast, allowing display pixels to switch display in about 10 s, eliminating image blurring caused by slower switching speeds in many other flat panel displays.
  • the driving force of MEMS is generated by the balance between linear mechanical force and nonlinear electrostatic force and surface adsorption force.
  • the difference between mechanical force and electrostatic force, coupled with the existence of surface adsorption force, makes the driving of the pixels of IM0D display have hysteresis effect.
  • the bistable behavior that results in the display can also be seen as a memory function of the pixel. Therefore, the IM0D display maintains an image stable driving power for a long time.
  • the display can be addressed in passive mode (Passive).
  • the driving process of the IM0D display can be divided into two time periods, one is an addressing driving period, and the other is a driving driving period.
  • the driving circuit applies a scanning signal to the row electrode lines row by row, and simultaneously applies a data signal to the column electrode lines in the same manner as the scanning, so that the voltage difference between the row and column electrodes is in an open state voltage display.
  • the pixel is activated from the collapsed state to the open state; the display pixel that causes the voltage difference between the row and column electrodes to be in the collapsed state voltage is released from the open state to the collapsed state; and the voltage difference between the row and column electrodes is at the holding voltage ( Hold Voltage)
  • the display pixel remains in the previous or open state or collapsed state; during the drive period, the drive circuit applies a signal to the row electrode line and the column electrode line, allowing all row electrode lines and all column electrode lines
  • the voltage difference is at the Hold Voltage and all display pixels remain in the previous or open state or collapsed state.
  • the touch-sensitive interference modulation display 100 shown in FIG. 1 includes an interference modulation display screen 110 and a driving circuit 120.
  • the driving circuit 120 includes a display driving circuit 130, a touch control circuit 140, a display/touch signal loading circuit 150, and a control circuit 160.
  • the touch circuit 140 has a touch excitation source 141 and a touch signal detection circuit 142.
  • the display screen 110 has m row electrode lines 1111.
  • the display driving circuit 130 and the touch circuit 140 are both connected to the display/touch signal loading circuit 150.
  • the output end of the display/touch signal loading circuit 150 is connected to the row electrode group 111 and the column electrode group 112 of the display screen 110, and the display driving circuit 130
  • the touch circuit 140 and the display/touch signal loading circuit 150 are connected to the control circuit 160.
  • the display/touch signal loading circuit 150 can directly output the display signal to the display screen 110 under the control of the control circuit 160.
  • the touch signal of the AC component generated by the touch excitation source 141 can also be superimposed on the display driving signal. , output to the display screen 110.
  • the various connecting lines in Figure 1 do not only represent single-wire connections, but also represent multi-wire connections.
  • the touch-sensitive interference modulation display 100 operates as follows:
  • the display/touch signal loading circuit 150 in the driving circuit 120 When the display 100 is in the address driving period (S period), the display/touch signal loading circuit 150 in the driving circuit 120, under the control of the control circuit 160, will display the simpleness of the driving circuit 130 not superimposing any other signals.
  • Displaying a driving signal applying a scanning signal to the row electrode line row by row in a scanning addressing manner, and simultaneously applying a data signal to the column electrode lines while scanning, so that the voltage difference between the row and column electrode lines is at an open state voltage display pixel, Starting from the collapsed state to the open state; the display pixel that causes the voltage difference between the row and column electrodes to be in the collapsed state voltage is released from the open state to the collapsed state; the display pixel that keeps the voltage difference between the row and column electrodes at the holding voltage remains at the previous position Or open state or collapsed state; m X n display pixels are respectively in their set display state according to the display driving signal.
  • Display 110 has an operational display element at column i and column j.
  • the display/touch signal loading circuit 150 When the display 100 is in the hold driving period, first enters the display hold period (H period), the display/touch signal loading circuit 150, under the control of the control circuit 160, will display the simple output of the drive circuit 130 without superimposing any other signals. Keeping the driving state display driving signal, outputting to each row electrode line and column electrode line, letting the voltage difference between all row electrode lines and all column electrode lines be at the holding voltage, all display pixels are kept in the previous state or open state or collapsed The state of the driving waveform during the period in which the driving period is not in the touch detection period is as shown in FIG. 2; then the display holding and touch detecting period (H+T period) is entered again, and the display/touch signal loading circuit in the driving circuit 120 is entered.
  • H period the display hold period
  • the control circuit 160 under the control of the control circuit 160, the AC touch generated by the touch excitation source 141
  • the control signal is superimposed on the display driving driving signal generated by the display driving circuit 130; the AC touch signal components on the output ends of the display/touch signal loading circuit 150 are in the same frequency, in phase, and equal amplitude state.
  • the display electrode lines simultaneously transmit display driving signals and touch signals; since the AC touch signal components on the output ends of the display/touch signal loading circuit 150 are in the same frequency, in phase The state of the equal amplitude, the voltage difference between the rows and columns of the electrodes is still at the holding voltage value, and all the display pixels remain in the previous state or the open state or the collapsed state; meanwhile, the touch signal detecting circuit in the touch circuit 140
  • the touch screen detecting circuit 142 detects the change of the touch signal on each electrode line at the same time or in a time-sharing manner to detect whether the electrode lines are touched and touched; After the detection is detected, the display retention period (H period) is returned, and the display/touch signal loading circuit 150 is returned to the control circuit 160.
  • the display driving circuit 130 displays a simple driving state display driving signal without superimposing any other signals, and outputs the driving signals to the row electrode lines and the column electrode lines, so that the voltage difference between all the row electrode lines and all the column electrode lines is at the holding voltage, all The display pixels are all maintained in the previous or open state or collapsed state. During the entire sustain drive period, all of the display pixels are maintained in the open or collapsed state due to the previous address drive period until the display 100 is switched back to the next address drive period.
  • the driving waveform during the period in which the driving period is not subjected to the touch detection is as shown in FIG. 2a, and the driving waveform during the touch detection is as shown in FIG. 2b.
  • the touch-type interference modulation display 100 When the touch-type interference modulation display 100 repeatedly switches between the address driving period and the sustain driving period, the display driving and the touch detection multiplex the display electrode lines to form a touch-type interference that can be displayed and touched. Modulate the display. Its work timing distribution diagram is shown in Figure 3.
  • the condition of the touched electrode line is determined, and the electrode line that has the largest change in the touch signal flowing through and exceeds a certain threshold is detected as the touched electrode line; or the touch signal that detects the flow changes is the largest. And the electrode line exceeding a certain threshold is the touched electrode line, and only the electrode line whose detected touch signal changes beyond a certain threshold is the touched electrode line, and the touch type interference modulation display 100 Allow simultaneous multi-touch.
  • the touch-sensitive interference modulation display 100 When the touch-sensitive interference modulation display 100 is used in an e-book type reader device, the display content of the display 100 for each frame remains unchanged for a long time. At this time, you can do it at every During the sustain driving period in which the display content remains unchanged, multiple touch detections are performed; that is, in each of the sustain driving periods, multiple display hold and touch detection periods (H+T periods) are set, and the driving circuit 120 is repeatedly used. a driving signal display driving signal superimposed with an AC touch signal is applied to all of the row electrode lines and all the column electrode lines; in each time period during which the driving signal is displayed in a driving state in which the AC touch signal is superimposed, The control circuit 140 performs touch detection on the display screen 110. The touch signal detection circuit 142 detects changes in the touch signals on the electrode lines to detect whether the electrode lines are touched and touched. Its work timing distribution diagram is shown in Figure 4. Embodiment 3
  • the touch-sensitive interference modulation display 100 When the touch-sensitive interference modulation display 100 is used for fast animated pattern display, the display content of the display 100 is changed fast every frame. At this time, after each address driving period, only the sustain driving state display driving signal superimposed with the AC touch signal may be applied to all the row electrode lines and all the column electrode lines, where the display and the touch are displayed.
  • the touch circuit 140 performs touch detection on the display screen 110, and the touch signal detection circuit 142 detects changes in the touch signals on the respective electrode lines to detect whether the electrode lines are touched and The location that was touched. Its work timing distribution diagram is shown in Figure 5.
  • the touch signal detection circuit 142 detects the change of the touch signal at intervals of the row electrode line and the column electrode line. Detecting whether each electrode line is touched or touched; the detecting the change of the touch signal at intervals of the opposite electrode line may be one electrode line at a time, or may be multiple electrodes at a time interval The line can also detect odd-numbered electrode lines at a time and even-numbered electrode lines at a time.
  • the touch-sensitive interference modulation display 100 operates as follows:
  • the display/touch signal loading circuit 150 in the driving circuit 120 superimposes the AC touch signal generated by the touch excitation source 141 on the display driving circuit 130 under the control of the control circuit 160.
  • the generated address driving state display is on the driving signal; the AC touch signal components on the output ends of the display/touch signal loading circuit 150 are at the same frequency, In-phase, equal-amplitude state, output to each row of electrode lines and column electrode lines, the display electrode line simultaneously transmits display driving signals and touch signals; display driving signals are scanned and addressed, and scanning is performed row by row to the row electrode lines
  • the signal is applied to the column electrode lines simultaneously with the scanning; since the AC touch signal components on the output ends of the display/touch signal loading circuit 150 are in the same frequency, in phase, and equal amplitude states, the row and column electrode lines
  • the voltage difference is still under the normal display address driving voltage value, so that the display pixel with the voltage difference between the row and column electrodes is in the open state voltage, starting from the collapse state to the open state; letting the voltage
  • the touch signal detecting circuit 142 in the touch circuit 140 performs touch detection on the i row and j columns of the display 110 having operable display elements, and the touch signal detecting circuit 142 simultaneously or divides In the time mode, only the change of the touch signal on the row electrode line near the i-th row and the column electrode line near the j-th column is detected to detect whether the electrode line on the operable display element at the i-row j-column is touched. bump.
  • the address driving period becomes the address driving and touch detection period (S+T period), and its driving waveform is as shown in Fig. 6.
  • the display/touch signal loading circuit 150 When the display 100 is in the hold driving period, that is, the display hold period (H period), the display/touch signal loading circuit 150, under the control of the control circuit 160, simply maintains the display drive circuit 130 without any other signals superimposed.
  • the state displays the driving signal, which is output to each row of electrode lines and column electrode lines, so that the voltage difference between all the row electrode lines and all the column electrode lines is at the holding voltage, and all the display pixels are kept in the previous or open state or collapsed state.
  • the touch-type interference modulation display 100 When the touch-type interference modulation display 100 repeatedly switches between the address driving and the touch detection period and the sustain driving period, the display driving and the touch detection multiplex the display electrode lines to form both display and touch. Touch-type interference modulation display. Its work timing distribution diagram is shown in Figure 7.
  • the touch-sensitive interference modulation display 100 When the touch-sensitive interference modulation display 100 is used for pattern display of high-speed changes such as movies and televisions, the display content of each display of the display 100 is replaced, and the display 100 may not have a period of driving at all, but according to the embodiment, Do touch operations.
  • Its work timing distribution diagram is shown in Figure 8. The above is a detailed description of the present invention in combination with specific preferred embodiments. It is to be understood that the specific implementation of the invention is not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Abstract

A touch-control interferometric modulation display(IMOD) is provided, the existing display electrode wires of the interferometric modulation display are used as touch-control sense electrode wires, not only the touch-control signal but also the display driving voltage are supplied to the display screen electrode wires, thus, the interferometric modulation display increases the function of touch-control without degrading the display characteristic. Then, the IMOD reflective display becomes a touch-control interferometric modulation display which has combined the display screen and the touch-control screen together, thus no need to set the reflective surface of the resistance or capacitive touch-control screen in front of the display screen or set the electromagnetic touch-control screen behind the display screen.

Description

一种触控式干涉调制显示器 技术领域  Touch type interference modulation display
本发明涉及干涉调制显示器和触控屏， 尤其涉及触控式干涉调制显示 器。 背景技术  The present invention relates to an interferometric modulation display and a touch screen, and more particularly to a touch sensitive interferometric display. Background technique
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触控屏发展至今已广泛用于个人计算机、 智能电话、 公共信息、 智能 家电、 工业控制等众多领域。 在目前的触控领域， 主要有电阻式触控屏、 书  Touch screen development has been widely used in many fields such as personal computers, smart phones, public information, smart home appliances, industrial control, and the like. In the current touch field, there are mainly resistive touch screens and books.
光电式触控屏、 超声波式触控屏、 平面电容式触控屏， 近年来投射电容式 触控屏发展迅速。 但目前这些触控屏均具有各自的技术缺点， 造成它们虽 然在某些特殊场合已广为采用， 但难以在普通显示屏上推广应用。 Photoelectric touch screens, ultrasonic touch screens, and flat capacitive touch screens have recently developed rapidly in projected capacitive touch screens. However, at present, these touch screens have their own technical shortcomings, which makes them widely used in some special occasions, but it is difficult to promote the application on ordinary displays.
显示屏与触控屏是对孪生产品， 现有技术中， 通常显示屏与触控屏各 自独立承担显示和触控任务。 目前这种分立式的具有触控功能的平板显示 器以显示屏、 显示驱动器、触控屏、触控信号检测器、 背光源等部件构成， 触控屏有应用不同感测原理的电阻式、 电容式、 电磁式、 超声波式和光电 式等，显示屏有无源液晶显示屏（TN/STN-LCD)、有源液晶显示屏（TFT-LCD)、 有机发光二极管显示屏（0LED、 AM_0LED)、 等离子体显示屏（PDP)、 纳米碳 管显示屏、电子纸 (e-Paper)等。带有触控屏的平板显示器是将分体的触控 屏与显示屏层叠在一起， 通过触控屏探测到触摸点的平面位置， 再使显示 屏上的光标跟随触摸点定位。 触控屏与显示屏的层叠使得触控式平板显示 器变厚变重成本增加； 在触控屏置于显示屏前面时， 触控屏感测电极产生 的反射又会使得显示不均匀和在强外界光环境下显示对比度的下降， 影响 显示效果。 将触控板和显示屏集成为一体， 使具有触控功能的平板显示器 变得更加轻薄， 是人们努力的方向。  The display screen and the touch screen are pairs of products. In the prior art, the display screen and the touch screen are usually independently responsible for display and touch tasks. At present, the discrete flat panel display with touch function is composed of a display screen, a display driver, a touch screen, a touch signal detector, a backlight, and the like. The touch screen has a resistive type using different sensing principles. Capacitive, electromagnetic, ultrasonic and photoelectric, etc., the display has passive liquid crystal display (TN/STN-LCD), active liquid crystal display (TFT-LCD), organic light-emitting diode display (0LED, AM_0LED) , plasma display (PDP), carbon nanotube display, e-Paper, etc. A flat panel display with a touch screen laminates the split touch screen with the display screen, detects the planar position of the touch point through the touch screen, and causes the cursor on the display screen to follow the touch point. The cascading of the touch screen and the display screen makes the touch panel display thicker and heavier and the cost increases; when the touch screen is placed in front of the display screen, the reflection generated by the touch screen sensing electrode causes the display to be uneven and strong. The contrast is reduced in the external light environment, which affects the display effect. Integrating the touchpad and the display to make the flat panel display with touch function lighter and thinner is the direction of people's efforts.
找出一种解决上述的结构复杂问题的方案， 提高具有触控功能的平板 显示器的可靠性、 改善显示效果、 压縮厚度、 降低成本， 以简洁的方法实 现平板显示器触控功能是必要的。  Finding a solution to the above-mentioned structural complexity problem, improving the reliability of the touch-enabled flat panel display, improving the display effect, compressing the thickness, and reducing the cost, and implementing the touch function of the flat panel display in a simple manner is necessary.
申请号为 2006100948141、 名称为 "触控式平板显示器"和申请号为 2006101065583,名称为 "具有触控功能的平板显示器"的中国发明专利说 明书， 分别揭示了一种触控探测电路与显示屏电极之间的连接方式， 通过 模拟开关或加载电路使显示屏电极既传输显示驱动信号， 又传输并感测触 控信号， 显示驱动和触控探测时分复用或同时共用显示屏电极， 显示屏电 极既用于显示驱动又用于触控探测； 申请号为 200810133417X、名称为 "一 种触控式平板显示器" 的中国发明专利说明书， 进一歩揭示了触控式平板 显示器的触控信号施加和检测的方法， 避免触控信号的串扰， 提高检测速 度； 申请号为 2009102035358、 名称为 "一种触控式平板显示器的驱动实 现" 的中国发明专利说明书， 申请号为 2009101399060、 名称为 "一种触 控式平板显示器的驱动实现" 的中国发明专利说明书， 则又对触控式平板 显示器做出了进一歩的完善和细化； 申请号为 2009202193272、名称为 "一 种触控电路"的中国实用新型专利说明书，进一歩揭示了触控电路的构造; 申请号为 2009202055056、 名称为 "一种触控式平板显示器" 的中国实用 新型专利说明书， 则揭示了触控式平板显示器触控信号的施加和检测的时 序。 这一系列的专利创新性地提出了 "触控式平板显示器" 的方法和实施 The Chinese invention patent with the application number of 2006100948141, the name "touch-type flat panel display" and the application number is 2006101065583, and the name is "flat-panel display with touch function" The booklet respectively discloses a connection manner between the touch detection circuit and the display electrode, and the display electrode transmits the display drive signal through the analog switch or the load circuit, and transmits and senses the touch signal, the display drive and Touch detection time division multiplexing or simultaneous sharing of display electrodes, display electrodes are used for both display driving and touch detection; application number 200810133417X, the name of "a touch type flat panel display" Chinese invention patent specification, Further, a method for applying and detecting a touch signal of a touch panel display is disclosed, which avoids crosstalk of the touch signal and improves the detection speed; the application number is 2009102035358, and the name is "a drive realization of a touch panel display" The Chinese invention patent specification, application number 2009101399060, the Chinese invention patent specification entitled "Driver realization of a touch panel display", has further improved and refined the touch panel display; No. 2009202193272, the Chinese utility model patent specification entitled "One Touch Circuit", into one歩 Reveals the structure of the touch circuit; the Chinese utility model patent specification entitled "a touch panel display" of the application number 2009202055056 discloses the timing of application and detection of the touch signal of the touch panel display. This series of patents innovatively proposes a method and implementation of a "touch panel display"
、 上述中国专利所揭示的这类触控式平板显示器的基本工作原理是， 利 用显示屏上两组相交的电极作为触控传感电极， 电极组的各条电极线连接 触控激励源， 触控激励源向电极线施加触控激励信号。 当人的手指或其他 触控物靠近或接触某条电极线时， 触控电路通过探测各条电极线触控信号 变化的大小， 从而找出手指或其他触控物在显示屏上的位置。 这是一种全 新的显示屏与触控屏二合为一式的触控探测技术， 具有显著的成本优势和 广阔的发展前景。 The basic working principle of the touch panel display disclosed in the above Chinese patent is that two sets of intersecting electrodes on the display screen are used as the touch sensing electrodes, and the electrode lines of the electrode group are connected to the touch excitation source, and the touch The control excitation source applies a touch excitation signal to the electrode lines. When a person's finger or other touch object approaches or touches an electrode line, the touch circuit detects the position of the finger or other touch object on the display screen by detecting the change of the touch signal of each electrode line. This is a new touch detection technology that combines a display screen and a touch screen. It has significant cost advantages and broad development prospects.
作为平板显示器的一种， 干涉调制显示器（Interf erometric Modulation Display, IMOD)是运用物理学的干涉效应， 只需耗用少许电量 就能产生亮丽的色彩， 并且在烈日下也能清晰可见。 IM0D显示器的基本单 元是两片镜面夹着一个空隙的微小结构， 这个空隙决定光线照射显示器时 所反射的颜色。  As a kind of flat panel display, Interferometric Modulation Display (IMD) uses the interference effect of physics, which can produce bright colors with a small amount of power and can be clearly seen under the scorching sun. The basic unit of the IM0D display is a tiny structure with two mirrors sandwiching a gap that determines the color that is reflected when the light illuminates the display.
IM0D 显示器与目前液晶显示器（Liquid Crystal Display, LCD)的制 造技术兼容， 其光电特性又让它可以省去制造薄膜晶体管显示器的复杂流 程， 也无需诸如限制 LCD 发光的彩色滤光片和偏振片等元件。 由于 IM0D 显示器是一种光线的反射调制显示器， 其具有强光环境下可视性好、 宽视 角、 高反射率、 双稳态记忆功能、 功耗低等诸多优点， 让它在便携式显示 领域具有无限的前景。 The IM0D display is compatible with the current manufacturing technology of liquid crystal display (LCD), and its photoelectric characteristics make it possible to eliminate the complicated process of manufacturing a thin film transistor display, and eliminate the need for color filters and polarizers such as LCD light limiting. element. Since the IM0D display is a light-reflecting modulation display, it has many advantages such as good visibility, wide viewing angle, high reflectivity, bistable memory function, low power consumption, etc. in a strong light environment, making it portable display The field has unlimited prospects.
在便携式显示领域， 装置上往往没有更多的空间用于键盘和鼠标等输 入设备。 传统的触控屏， 无论是电阻式的还是电容式的， 触控屏都是设置 于显示器之前；对于 IM0D这样的反射型显示器，如果再有反射面置于显示 屏之前，将严重影响其显示效果。虽然电磁式触控屏是设置于显示器之后， 但 IM0D显示器像素反光导电隔膜的反射层又往往是金属层，金属层对电磁 式触控屏触控信号的传输会产生严重阻碍，影响电磁式触控屏的正常工作; 另外， 电磁式触控屏的成本也是非常昂贵的。  In the field of portable displays, there is often no more space on the device for input devices such as keyboards and mice. Traditional touch screens, whether resistive or capacitive, are placed in front of the display; for reflective displays such as IM0D, if the reflective surface is placed in front of the display, it will seriously affect its display. effect. Although the electromagnetic touch screen is disposed behind the display, the reflective layer of the pixel reflective conductive diaphragm of the IM0D display is often a metal layer, and the metal layer may seriously hinder the transmission of the touch signal of the electromagnetic touch screen, affecting the electromagnetic touch. The normal operation of the control panel; in addition, the cost of the electromagnetic touch screen is also very expensive.
本发明是针对干涉调制显示器， 提出利用干涉调制显示屏上两组相交 的电极线作为触控传感电极线， 实现干涉调制显示屏与触控屏二合为一的 触控式干涉调制显示器。 发明内容  The present invention is directed to an interferometric modulation display, and proposes a touch-sensitive interferometric modulation display in which an interference modulation display screen and a touch screen are combined into one by using two sets of intersecting electrode lines on the display screen as the touch sensing electrode lines. Summary of the invention
本发明就是为了直接在干涉调制显示器实现触控功能， 将干涉调制显 示屏与触控屏二合为一， 提出的一种触控式干涉调制显示器的触控信号特 征， 以及触控信号施加和检测时序的方案。  The invention is to realize the touch function directly in the interference modulation display, combine the interference modulation display screen and the touch screen, and propose a touch signal characteristic of the touch type interference modulation display, and the touch signal application and A scheme for detecting timing.
本发明的技术问题通过以下的技术方案予以解决：  The technical problem of the present invention is solved by the following technical solutions:
一种触控式干涉调制显示器， 包括干涉调制显示屏和驱动电路； 在显 示屏的基板上设置有不少于两组 m条行电极线的行电极组、 n条列电极线 的列电极组和 mX n个显示像素，行电极组和列电极组分别连接各显示像素 两片电极中的一片， 行列两组电极间电极线相互交叉， 同组内各条电极线 互不相交， 其中 m、 n是大于 2的自然数； 驱动电路包括有显示驱动电路， 显示驱动电路对两组电极线施加显示驱动信号， 驱动各像素处于设定的显 示状态； 驱动电路中还包括有触控电路， 所述触控电路具有触控激励源和 触控信号检测电路； 在显示屏处于显示状态的某一时间段内， 驱动电路在 显示驱动信号上叠加上触控激励源产生的交流成份的触控信号， 并施加到 行电极线和列电极线上， 并让行各电极线和列电极线间的电压差处于显示 屏所处显示状态的显示驱动电压值范围内， 显示屏电极线同时传输显示驱 动信号和触控信号； 触控电路中的触控信号检测电路同时或分时检测电极 线上触控信号的变化， 来探测各电极线是否被触碰； 显示驱动和触控探测 同时复用显示屏电极线。 本发明的技术问题通过以下的技术方案进一歩予以解决： 根据本发明的另一个具体方面， 驱动电路是对所述干涉调制显示屏的 至少一条行电极线和多条列电极线， 或至少一条列电极线和多条行电极线 同时施加叠加触控信号的显示驱动信号。 A touch type interference modulation display comprising an interference modulation display screen and a driving circuit; wherein a row electrode group of not less than two sets of m row electrode lines and a column electrode group of n column electrode lines are disposed on a substrate of the display screen And mX n display pixels, the row electrode group and the column electrode group are respectively connected to one of the two electrodes of each display pixel, and the electrode lines between the two groups of electrodes intersect each other, and the electrode lines in the same group do not intersect each other, wherein m, n is a natural number greater than 2; the driving circuit includes a display driving circuit, the display driving circuit applies a display driving signal to the two sets of electrode lines, and drives each pixel to be in a set display state; the driving circuit further includes a touch circuit, The touch circuit has a touch excitation source and a touch signal detection circuit; in a certain period of time when the display screen is in a display state, the driving circuit superimposes the touch signal of the AC component generated by the touch excitation source on the display driving signal, And applying to the row electrode line and the column electrode line, and letting the voltage difference between each electrode line and the column electrode line be in the display state of the display state of the display screen In the range of pressure value, the display electrode line simultaneously transmits the display driving signal and the touch signal; the touch signal detecting circuit in the touch circuit detects the change of the touch signal on the electrode line at the same time or in a time-sharing manner to detect whether each electrode line is Touch; display drive and touch detection simultaneously multiplex display electrode lines. The technical problem of the present invention is further solved by the following technical solution: According to another specific aspect of the present invention, the driving circuit is at least one row electrode line and a plurality of column electrode lines, or at least one of the interference modulation display screen The column electrode line and the plurality of row electrode lines simultaneously apply display driving signals for superimposing the touch signals.
根据本发明的另一个具体方面， 驱动电路是同时对所述干涉调制显示 屏的所有行电极线和所有列电极线同时施加叠加触控信号的显示驱动信 号。  According to another specific aspect of the present invention, the driving circuit is a display driving signal for simultaneously applying a superimposed touch signal to all of the row electrode lines and all the column electrode lines of the interferometric display screen.
根据本发明的另一个具体方面， 所述在行电极线的显示驱动信号上叠 加的触控信号，和列电极线的显示驱动信号上叠加的触控信号，是同频率、 同相位和等幅值的交流信号。  According to another specific aspect of the present invention, the touch signal superimposed on the display driving signal of the row electrode line and the touch signal superimposed on the display driving signal of the column electrode line are the same frequency, the same phase, and the equal amplitude. The value of the AC signal.
根据本发明的另一个具体方面， 所述触控信号检测电路对显示屏电极 线上触控信号变化进行检测， 是对显示屏的所有电极线或部分电极线进行 检测。  According to another specific aspect of the present invention, the touch signal detecting circuit detects a change of a touch signal on a display electrode line, and detects all electrode lines or partial electrode lines of the display screen.
根据本发明的另一个具体方面， 所述触控信号检测电路对显示屏的部 分电极线上触控信号变化进行检测， 是对显示屏具有可操作显示元素位置 处的电极线进行检测。  According to another specific aspect of the present invention, the touch signal detecting circuit detects a change in a touch signal on a part of the electrode lines of the display screen, and detects an electrode line at a position where the display screen has an operable display element.
根据本发明的另一个具体方面， 所述的在显示屏处于显示状态的某一 时间段内， 是指显示屏处于保持驱动时段内的某一时间段， 在此时间段， 将叠加触控信号的显示驱动信号施加到行电极线和列电极线上， 并让所有 行电极线和所有列电极线间的电压差处于保持电压值的范围内。  According to another specific aspect of the present invention, the display screen is in a certain period of time when the display screen is in the display state, and the display screen is in a certain period of time during the hold driving period, during which the touch signal is superimposed. The display driving signal is applied to the row electrode line and the column electrode line, and the voltage difference between all the row electrode lines and all the column electrode lines is within the range of the holding voltage value.
根据本发明的另一个具体方面，所述的在显示屏处于保持驱动时段内， 进行的将叠加触控信号的显示驱动信号施加到电极线上， 并检测电极线上 触控信号的变化； 可以是在每一次保持驱动时段内都进行， 也可以不是在 每一次保持驱动时段内都进行； 在进行触控信号变化检测的保持驱动时段 内， 可以是进行一次检测， 也可以是进行多次检测。  According to another specific aspect of the present invention, the display driving signal for superimposing the touch signal is applied to the electrode line during the display driving period, and detecting the change of the touch signal on the electrode line; It is performed every time the driving period is maintained, or may not be performed every time the driving period is maintained; during the holding driving period of the touch signal change detection, one detection may be performed, or multiple detections may be performed. .
根据本发明的另一个具体方面， 所述的在显示屏处于显示状态的某一 时间段内， 是指显示屏处于寻址驱动时段内的某一时间段， 在此时间段， 将叠加触控信号的显示驱动信号施加到行电极线和列电极线上， 并让被寻 址到的行电极线上显示目标为开放状态的显示像素， 行电极线和列电极线 间的电压差处于开放状态电压值的范围内； 让被寻址到的行电极线上显示 目标为塌陷状态的显示像素， 行电极线和列电极线间的电压差处于塌陷状 态电压值的范围内； 让未被寻址到的行电极线和所以列电极线间的电压差 处于保持电压值的范围内。 According to another specific aspect of the present invention, the display screen is in a certain period of time when the display screen is in the display state, and the display screen is in a certain period of time during the address driving period, during which the overlay touch is performed. The display driving signal of the signal is applied to the row electrode line and the column electrode line, and the displayed row electrode line displays the display pixel whose target is open, and the voltage difference between the row electrode line and the column electrode line is open. Within the range of the voltage value; let the displayed row electrode line display the display pixel whose target is collapsed, and the voltage difference between the row electrode line and the column electrode line is collapsed Within the range of the state voltage value; let the voltage difference between the row electrode line that is not addressed and the column electrode line be within the range of the hold voltage value.
根据本发明的另一个具体方面，所述的在显示屏处于寻址驱动时段内， 进行的将叠加触控信号的显示驱动信号施加到电极线上， 并检测电极线上 触控信号的变化； 可以是在每一次寻址驱动时段内都进行， 也可以不是在 每一次寻址驱动时段内都进行； 在进行触控信号变化检测的寻址驱动时段 内， 可以是进行一次检测， 也可以是进行多次检测。  According to another specific aspect of the present invention, the display driving signal for superimposing the touch signal is applied to the electrode line during the address driving period of the display screen, and detecting the change of the touch signal on the electrode line; It may be performed in each address driving period, or may not be performed in each address driving period; in the address driving period in which the touch signal change detection is performed, it may be performed once, or may be Perform multiple tests.
本发明与现有技术对比的有益效果是：  The beneficial effects of the present invention compared to the prior art are:
本发明所揭示的技术方案， 是提出利用干涉调制显示屏上既有的显示 电极线也作为触控传感电极线， 对显示屏电极线施加触控信号又避免影响 显示驱动电压， 使干涉调制显示器在完全不损失其显示特性的情况下， 又 增加了十分重要的触控功能。让 IM0D这样的反射型显示器，既不需再电阻 或电容式触控屏的反射面设置在显示屏之前， 也不需要电磁式触控屏设置 在显示器之后， 实现显示屏与触控屏二合为一的触控式干涉调制显示器。  The technical solution disclosed by the present invention proposes to use an interference modulation to modulate an existing display electrode line on the display screen as a touch sensing electrode line, apply a touch signal to the display electrode line, and avoid affecting the display driving voltage, thereby making interference modulation. The display adds a very important touch function without losing its display characteristics at all. For a reflective display such as IM0D, the reflective surface of the resistive or capacitive touch screen is not required to be placed in front of the display screen, and the electromagnetic touch screen is not required to be disposed behind the display to realize the combination of the display screen and the touch screen. A touch-sensitive interferometric modulation display.
由于不需要格外的触控屏和触控驱动 IC,触控式干涉调制显示器在成 本上也具有非常的优势。 附图说明  Since the touch screen and the touch drive IC are not required, the touch type interference modulation display also has a great advantage in cost. DRAWINGS
图 1是本发明具体实施方式一、 二、 三、 四的电气连接示意图； 图 2a 是本发明具体实施方式一保持驱动时段未进行触控探测期间的 驱动波形图；  1 is a schematic diagram of electrical connections according to a first embodiment, a second, a third, and a fourth embodiment of the present invention; and FIG. 2 is a driving waveform diagram during a period in which the touch detection period is not performed during a driving period of the present invention;
图 2b 是本发明具体实施方式一保持驱动时段进行触控探测期间的驱 动波形图；  2b is a driving waveform diagram during a touch detection period during a hold driving period according to an embodiment of the present invention;
图 3是本发明具体实施方式一的工作时序分配图；  3 is a working timing distribution diagram of a first embodiment of the present invention;
图 4是本发明具体实施方式二的工作时序分配图；  4 is a working timing distribution diagram of a second embodiment of the present invention;
图 5是本发明具体实施方式三的工作时序分配图；  5 is a working timing distribution diagram of a third embodiment of the present invention;
图 6是本发明具体实施方式四寻址驱动时段的驱动波形图；  6 is a driving waveform diagram of a four-address driving period according to an embodiment of the present invention;
图 7和 8是本发明具体实施方式四的两种工作时序分配图。 具体实施方式  7 and 8 are two operation timing distribution diagrams of a fourth embodiment of the present invention. detailed description
干涉调制显示器是一种微电机系统（Micro-Electro-Mechanical System, MEMS) , 显示像素的基本结构是被薄膜覆盖的玻璃基板， 基板上具 有一层透明导电极， 具有一层反光导电隔膜 (Reflective membrance)覆盖 在基板上， 这层隔膜与玻璃基板间通过气隙 (Air gap)隔离。在未通电的开 启状态 (Open State) , 像素是明亮的， 入射光线在反光隔膜与玻璃基板气 隙间因干涉产生色彩； 向玻璃基板上的电极和隔膜上的电极施加电压， 隔 膜被静电吸引到玻璃上（塌陷状态， Col lapsed State) , 隔膜与玻璃基板间 的气隙厚度减小形成离析态时， 光线的干涉导致像素变黑。 The interferometric modulation display is a micro-electromechanical system (Micro-Electro-Mechanical System, MEMS), the basic structure of the display pixel is a glass substrate covered by a film, the substrate has a transparent conductive electrode, and a reflective conductive membrane covering the substrate, the diaphragm and the glass substrate pass through Air gap isolation. In the unpowered Open State, the pixels are bright, the incident light is interfering with color between the reflective diaphragm and the glass substrate air gap; a voltage is applied to the electrodes on the glass substrate and the electrodes on the diaphragm, and the diaphragm is electrostatically attracted. On the glass (collapsed state, Col lapsed State), when the thickness of the air gap between the diaphragm and the glass substrate is reduced to form an isolated state, the interference of the light causes the pixel to become black.
MEMS驱动的速度快， 让显示像素能在约 10 s内切换显示状态， 消除 了许多其他平板显示器由于切换速度较慢， 而导致的图像模糊问题。  The MEMS drive is fast, allowing display pixels to switch display in about 10 s, eliminating image blurring caused by slower switching speeds in many other flat panel displays.
MEMS 的驱动是由线性机械力与非线性静电力以及表面吸附力的平衡 作用而产生，机械力与静电力的差异，再加上表面吸附力的存在，使得 IM0D 显示器像素的驱动具有迟滞效应， 导致显示的双稳态行为， 也可看作为像 素的记忆功能。 因此， IM0D显示器长时间保持图像稳定的驱动功率极低。  The driving force of MEMS is generated by the balance between linear mechanical force and nonlinear electrostatic force and surface adsorption force. The difference between mechanical force and electrostatic force, coupled with the existence of surface adsorption force, makes the driving of the pixels of IM0D display have hysteresis effect. The bistable behavior that results in the display can also be seen as a memory function of the pixel. Therefore, the IM0D display maintains an image stable driving power for a long time.
由于 IM0D显示器的双稳态特性， 显示器可以在被动模式 (Passive)下 寻址驱动。 IM0D显示器的驱动过程可分为两个时段，一个是寻址驱动时段， 一个是保持驱动时段。 在寻址驱动时段， 驱动电路逐行向行电极线施加扫 描信号， 同时与扫描同歩向各列电极线施加数据信号， 让行列电极线间电 压差处于开放状态电压（Open State Voltage)的显示像素， 从塌陷状态启 动到开放状态； 让行列电极线间电压差处于塌陷状态电压（Col lapsed State Voltage)的显示像素， 从开放状态释放回塌陷状态； 让行列电极线 间电压差处于保持电压 (Hold Voltage)的显示像素， 保持在之前所处的或 开放状态或塌陷状态； 在保持驱动时段， 驱动电路向行电极线和列电极线 施加的信号， 让所有行电极线和所有列电极线间的电压差处于保持电压 (Hold Voltage) , 所有显示像素均保持在之前所处的或开放状态或塌陷状 态。 具体实施方式一  Due to the bistable nature of the IM0D display, the display can be addressed in passive mode (Passive). The driving process of the IM0D display can be divided into two time periods, one is an addressing driving period, and the other is a driving driving period. During the address driving period, the driving circuit applies a scanning signal to the row electrode lines row by row, and simultaneously applies a data signal to the column electrode lines in the same manner as the scanning, so that the voltage difference between the row and column electrodes is in an open state voltage display. The pixel is activated from the collapsed state to the open state; the display pixel that causes the voltage difference between the row and column electrodes to be in the collapsed state voltage is released from the open state to the collapsed state; and the voltage difference between the row and column electrodes is at the holding voltage ( Hold Voltage) The display pixel remains in the previous or open state or collapsed state; during the drive period, the drive circuit applies a signal to the row electrode line and the column electrode line, allowing all row electrode lines and all column electrode lines The voltage difference is at the Hold Voltage and all display pixels remain in the previous or open state or collapsed state. Specific embodiment 1
如图 1所示的触控式干涉调制显示器 100， 包括干涉调制显示屏 110、 驱动电路 120。 驱动电路 120包括显示驱动电路 130、 触控电路 140、 显示 /触控信号加载电路 150和控制电路 160等;所述触控电路 140具有触控激 励源 141和触控信号检测电路 142。 显示屏 110具有 m条行电极线 1111、 1112、…、 l l l i、…、 111m的行电极组 111、 n条列电极线 1121、 1122、…、 112j、 …、 112η的列电极组 112和 mX n个显示像素， 行电极组和列电极 组分别连接各显示像素两片电极中的一片， 行列两组电极间电极线相互交 叉， 同组内各条电极线互不相交， 其中 m、 n是大于 2的自然数。 The touch-sensitive interference modulation display 100 shown in FIG. 1 includes an interference modulation display screen 110 and a driving circuit 120. The driving circuit 120 includes a display driving circuit 130, a touch control circuit 140, a display/touch signal loading circuit 150, and a control circuit 160. The touch circuit 140 has a touch excitation source 141 and a touch signal detection circuit 142. The display screen 110 has m row electrode lines 1111. 1112, ..., llli, ..., 111m row electrode group 111, n column electrode lines 1121, 1122, ..., 112j, ..., 112n column electrode group 112 and mX n display pixels, row electrode group and column electrode group One of the two electrodes of each display pixel is respectively connected, and the electrode lines of the two groups of electrodes intersect each other, and the electrode lines in the same group do not intersect each other, wherein m and n are natural numbers greater than 2.
显示驱动电路 130 和触控电路 140 均连接显示 /触控信号加载电路 150，显示 /触控信号加载电路 150的输出端连接显示屏 110的行电极组 111 和列电极组 112， 显示驱动电路 130、 触控电路 140和显示 /触控信号加载 电路 150均与控制电路 160相互连接。显示 /触控信号加载电路 150在控制 电路 160的控制下， 可以直接将显示信号输出给显示屏 110; 也可以在显 示驱动信号上， 叠加上触控激励源 141产生的交流成份的触控信号， 输出 给显示屏 110。 图 1中的各条连接线， 并不只代表单线连接， 也代表多线 的连接关系。  The display driving circuit 130 and the touch circuit 140 are both connected to the display/touch signal loading circuit 150. The output end of the display/touch signal loading circuit 150 is connected to the row electrode group 111 and the column electrode group 112 of the display screen 110, and the display driving circuit 130 The touch circuit 140 and the display/touch signal loading circuit 150 are connected to the control circuit 160. The display/touch signal loading circuit 150 can directly output the display signal to the display screen 110 under the control of the control circuit 160. The touch signal of the AC component generated by the touch excitation source 141 can also be superimposed on the display driving signal. , output to the display screen 110. The various connecting lines in Figure 1 do not only represent single-wire connections, but also represent multi-wire connections.
触控式干涉调制显示器 100按如下方式工作：  The touch-sensitive interference modulation display 100 operates as follows:
在显示器 100处于寻址驱动时段 (S时段），驱动电路 120中的显示 /触 控信号加载电路 150， 在控制电路 160的控制下， 将显示驱动电路 130所 产生的未叠加任何其他信号的单纯显示驱动信号， 以扫描寻址的方式， 逐 行向行电极线施加扫描信号，同时与扫描同歩向各列电极线施加数据信号， 让行列电极线间电压差处于开放状态电压的显示像素， 从塌陷状态启动到 开放状态； 让行列电极线间电压差处于塌陷状态电压的显示像素， 从开放 状态释放回塌陷状态； 让行列电极线间电压差处于保持电压的显示像素， 保持在之前所处的或开放状态或塌陷状态； m X n个显示像素根据显示驱动 信号， 分别处于其设定的显示状态。 显示屏 110上在 i行 j列处具有可操 作显示元素。  When the display 100 is in the address driving period (S period), the display/touch signal loading circuit 150 in the driving circuit 120, under the control of the control circuit 160, will display the simpleness of the driving circuit 130 not superimposing any other signals. Displaying a driving signal, applying a scanning signal to the row electrode line row by row in a scanning addressing manner, and simultaneously applying a data signal to the column electrode lines while scanning, so that the voltage difference between the row and column electrode lines is at an open state voltage display pixel, Starting from the collapsed state to the open state; the display pixel that causes the voltage difference between the row and column electrodes to be in the collapsed state voltage is released from the open state to the collapsed state; the display pixel that keeps the voltage difference between the row and column electrodes at the holding voltage remains at the previous position Or open state or collapsed state; m X n display pixels are respectively in their set display state according to the display driving signal. Display 110 has an operational display element at column i and column j.
在显示器 100处于保持驱动时段， 首先进入显示保持时段 (H时段）， 显示 /触控信号加载电路 150， 在控制电路 160的控制下， 将显示驱动电路 130 所产生的未叠加任何其他信号的单纯保持驱动态显示驱动信号， 输出 给各行电极线和列电极线， 让所有行电极线和所有列电极线间的电压差处 于保持电压， 所有显示像素均保持在之前所处的或开放状态或塌陷状态， 保持驱动时段未进行触控探测期间的驱动波形图如图 2所示； 然后再进入 显示保持和触控探测时段 (H+T时段），驱动电路 120中的显示 /触控信号加 载电路 150， 在控制电路 160的控制下， 将触控激励源 141产生的交流触 控信号， 叠加在显示驱动电路 130所产生的保持驱动态显示驱动信号上； 让显示 /触控信号加载电路 150各输出端上的交流触控信号成分处于同频、 同相、 等幅的状态， 输出给所有行电极线和所有列电极线， 显示屏电极线 同时传输显示驱动信号和触控信号；由于显示 /触控信号加载电路 150各输 出端上的交流触控信号成分处于同频、 同相、 等幅的状态， 各行列电极线 间电压差仍处于保持电压值， 所有显示像素均仍保持在之前所处的或开放 状态或塌陷状态； 同时， 触控电路 140中的触控信号检测电路 142对显示 屏 110进行触控探测， 触控信号检测电路 142以同时或分时检测各电极线 上触控信号的变化， 来探测各电极线是否被触碰和被触碰的位置； 完成触 控探测后再返回显示保持时段 (H时段）， 显示 /触控信号加载电路 150， 在 控制电路 160的控制下， 再返回到将显示驱动电路 130所产生的未叠加任 何其他信号的单纯保持驱动态显示驱动信号， 输出给各行电极线和列电极 线， 让所有行电极线和所有列电极线间的电压差处于保持电压， 所有显示 像素均保持在之前所处的或开放状态或塌陷状态。 在整个保持驱动时段， 所有显示像素均是保持在前一个寻址驱动时段所致的或开放状态或塌陷状 态， 直至显示器 100再转回下一个寻址驱动时段。 保持驱动时段未进行触 控探测期间的驱动波形图如图 2a所示，进行触控探测期间的驱动波形图如 图 2b所示。 When the display 100 is in the hold driving period, first enters the display hold period (H period), the display/touch signal loading circuit 150, under the control of the control circuit 160, will display the simple output of the drive circuit 130 without superimposing any other signals. Keeping the driving state display driving signal, outputting to each row electrode line and column electrode line, letting the voltage difference between all row electrode lines and all column electrode lines be at the holding voltage, all display pixels are kept in the previous state or open state or collapsed The state of the driving waveform during the period in which the driving period is not in the touch detection period is as shown in FIG. 2; then the display holding and touch detecting period (H+T period) is entered again, and the display/touch signal loading circuit in the driving circuit 120 is entered. 150, under the control of the control circuit 160, the AC touch generated by the touch excitation source 141 The control signal is superimposed on the display driving driving signal generated by the display driving circuit 130; the AC touch signal components on the output ends of the display/touch signal loading circuit 150 are in the same frequency, in phase, and equal amplitude state. Output to all row electrode lines and all column electrode lines, the display electrode lines simultaneously transmit display driving signals and touch signals; since the AC touch signal components on the output ends of the display/touch signal loading circuit 150 are in the same frequency, in phase The state of the equal amplitude, the voltage difference between the rows and columns of the electrodes is still at the holding voltage value, and all the display pixels remain in the previous state or the open state or the collapsed state; meanwhile, the touch signal detecting circuit in the touch circuit 140 The touch screen detecting circuit 142 detects the change of the touch signal on each electrode line at the same time or in a time-sharing manner to detect whether the electrode lines are touched and touched; After the detection is detected, the display retention period (H period) is returned, and the display/touch signal loading circuit 150 is returned to the control circuit 160. The display driving circuit 130 displays a simple driving state display driving signal without superimposing any other signals, and outputs the driving signals to the row electrode lines and the column electrode lines, so that the voltage difference between all the row electrode lines and all the column electrode lines is at the holding voltage, all The display pixels are all maintained in the previous or open state or collapsed state. During the entire sustain drive period, all of the display pixels are maintained in the open or collapsed state due to the previous address drive period until the display 100 is switched back to the next address drive period. The driving waveform during the period in which the driving period is not subjected to the touch detection is as shown in FIG. 2a, and the driving waveform during the touch detection is as shown in FIG. 2b.
当触控式干涉调制显示器 100反复在寻址驱动时段和保持驱动时段间 转换时， 显示驱动和触控探测就复用了显示屏电极线， 形成既可显示又可 触控的触控式干涉调制显示器。 其工作时序分配图如图 3所示。  When the touch-type interference modulation display 100 repeatedly switches between the address driving period and the sustain driving period, the display driving and the touch detection multiplex the display electrode lines to form a touch-type interference that can be displayed and touched. Modulate the display. Its work timing distribution diagram is shown in Figure 3.
判断被触电极线的条件， 可以检测到流经的触控信号变化最大的、 并 超过某设定阈值的电极线为被触电极线； 也可不以检测到流经的触控信号 变化最大的、 并超过某设定阈值的电极线为被触电极线， 而只以检测到流 经的触控信号变化超过某设定阈值的电极线为被触电极线， 让触控式干涉 调制显示器 100允许同时多点触控。 具体实施方式二  The condition of the touched electrode line is determined, and the electrode line that has the largest change in the touch signal flowing through and exceeds a certain threshold is detected as the touched electrode line; or the touch signal that detects the flow changes is the largest. And the electrode line exceeding a certain threshold is the touched electrode line, and only the electrode line whose detected touch signal changes beyond a certain threshold is the touched electrode line, and the touch type interference modulation display 100 Allow simultaneous multi-touch. Specific embodiment 2
本实施方式的电气结构和电气特性都与 "实施方式一"相同。  The electrical structure and electrical characteristics of the present embodiment are the same as those of "Embodiment 1".
当触控式干涉调制显示器 100是用于电子书（e-Book)类的阅读器装置 上时， 显示器 100每一帧显示内容都会长时间保持不变。 这时， 可以在每 一次显示内容保持不变的保持驱动时段内， 进行多次触控探测； 即在每一 次保持驱动时段内， 设置多次显示保持和触控探测时段 (H+T 时段）， 驱动 电路 120多次将叠加有交流触控信号的保持驱动态显示驱动信号， 施加给 所有行电极线和所有列电极线； 在每次施加叠加有交流触控信号的保持驱 动态显示驱动信号的时间段内， 触控电路 140都对显示屏 110进行触控探 测， 触控信号检测电路 142检测各电极线上触控信号的变化， 来探测各电 极线是否被触碰和被触碰的位置。 其工作时序分配图如图 4所示。 具体实施方式三 When the touch-sensitive interference modulation display 100 is used in an e-book type reader device, the display content of the display 100 for each frame remains unchanged for a long time. At this time, you can do it at every During the sustain driving period in which the display content remains unchanged, multiple touch detections are performed; that is, in each of the sustain driving periods, multiple display hold and touch detection periods (H+T periods) are set, and the driving circuit 120 is repeatedly used. a driving signal display driving signal superimposed with an AC touch signal is applied to all of the row electrode lines and all the column electrode lines; in each time period during which the driving signal is displayed in a driving state in which the AC touch signal is superimposed, The control circuit 140 performs touch detection on the display screen 110. The touch signal detection circuit 142 detects changes in the touch signals on the electrode lines to detect whether the electrode lines are touched and touched. Its work timing distribution diagram is shown in Figure 4. Embodiment 3
本实施方式的电气结构和电气特性都与 "实施方式一"相同。  The electrical structure and electrical characteristics of the present embodiment are the same as those of "Embodiment 1".
当触控式干涉调制显示器 100是用于快速动画图案显示时，显示器 100 每一帧显示内容更换快。 这时， 可以在每一次寻址驱动时段后， 只进行一 次将叠加有交流触控信号的保持驱动态显示驱动信号， 施加给所有行电极 线和所有列电极线， 在此显示保持和触控探测时段 (H+T 时段）内， 触控电 路 140对显示屏 110进行触控探测， 触控信号检测电路 142检测各电极线 上触控信号的变化， 来探测各电极线是否被触碰和被触碰的位置。 其工作 时序分配图如图 5所示。  When the touch-sensitive interference modulation display 100 is used for fast animated pattern display, the display content of the display 100 is changed fast every frame. At this time, after each address driving period, only the sustain driving state display driving signal superimposed with the AC touch signal may be applied to all the row electrode lines and all the column electrode lines, where the display and the touch are displayed. During the detection period (H+T period), the touch circuit 140 performs touch detection on the display screen 110, and the touch signal detection circuit 142 detects changes in the touch signals on the respective electrode lines to detect whether the electrode lines are touched and The location that was touched. Its work timing distribution diagram is shown in Figure 5.
由于操作者的手指具有一定粗细，为了进一歩縮短进行触控探测时间， 在进行触控探测时， 触控信号检测电路 142是对行电极线和列电极线间隔 地进行触控信号变化的检测，来探测各电极线是否被触碰和被触碰的位置； 所述对电极线间隔地进行触控信号变化的检测， 可以是每次间隔一条电极 线， 也可以是每次间隔多条电极线， 也可以是一次检测奇数电极线、 一次 检测偶数电极线。 具体实施方式四  Since the operator's finger has a certain thickness, in order to shorten the touch detection time, the touch signal detection circuit 142 detects the change of the touch signal at intervals of the row electrode line and the column electrode line. Detecting whether each electrode line is touched or touched; the detecting the change of the touch signal at intervals of the opposite electrode line may be one electrode line at a time, or may be multiple electrodes at a time interval The line can also detect odd-numbered electrode lines at a time and even-numbered electrode lines at a time. DETAILED DESCRIPTION OF THE INVENTION
本实施方式的电气结构和电气特性都与 "实施方式一"相同。  The electrical structure and electrical characteristics of the present embodiment are the same as those of "Embodiment 1".
触控式干涉调制显示器 100按如下方式工作：  The touch-sensitive interference modulation display 100 operates as follows:
在显示器 100处于寻址驱动时段，驱动电路 120中的显示 /触控信号加 载电路 150， 在控制电路 160的控制下， 将触控激励源 141产生的交流触 控信号， 叠加在显示驱动电路 130所产生的寻址驱动态显示驱动信号上； 让显示 /触控信号加载电路 150各输出端上的交流触控信号成分处于同频、 同相、 等幅的状态， 输出给各行电极线和各列电极线， 显示屏电极线同时 传输显示驱动信号和触控信号； 显示驱动信号以扫描寻址的方式， 逐行向 行电极线施加扫描信号， 同时与扫描同歩向各列电极线施加数据信号； 由 于显示 /触控信号加载电路 150各输出端上的交流触控信号成分处于同频、 同相、 等幅的状态， 各行列电极线间电压差仍处于正常的显示寻址驱动电 压值下， 让行列电极线间电压差处于开放状态电压的显示像素， 从塌陷状 态启动到开放状态;让行列电极线间电压差处于塌陷状态电压的显示像素， 从开放状态释放回塌陷状态； 让行列电极线间电压差处于保持电压的显示 像素， 保持在之前所处的或开放状态或塌陷状态； mX n个显示像素根据显 示驱动信号， 分别处于其设定的显示状态。 显示屏 110上只在 i行 j列处 具有可操作显示元素。 When the display 100 is in the address driving period, the display/touch signal loading circuit 150 in the driving circuit 120 superimposes the AC touch signal generated by the touch excitation source 141 on the display driving circuit 130 under the control of the control circuit 160. The generated address driving state display is on the driving signal; the AC touch signal components on the output ends of the display/touch signal loading circuit 150 are at the same frequency, In-phase, equal-amplitude state, output to each row of electrode lines and column electrode lines, the display electrode line simultaneously transmits display driving signals and touch signals; display driving signals are scanned and addressed, and scanning is performed row by row to the row electrode lines The signal is applied to the column electrode lines simultaneously with the scanning; since the AC touch signal components on the output ends of the display/touch signal loading circuit 150 are in the same frequency, in phase, and equal amplitude states, the row and column electrode lines The voltage difference is still under the normal display address driving voltage value, so that the display pixel with the voltage difference between the row and column electrodes is in the open state voltage, starting from the collapse state to the open state; letting the voltage difference between the row and column electrodes be in the collapse state voltage The display pixel is released from the open state to the collapsed state; the display pixel with the voltage difference between the row and column electrodes is maintained at the previous or open state or collapsed state; mX n display pixels are respectively located according to the display driving signal The display state of its settings. The display 110 has operational display elements only at i rows and j columns.
在寻址驱动期间， 触控电路 140中的触控信号检测电路 142， 对显示 屏 110上具有可操作显示元素的 i行 j列处进行触控探测， 触控信号检测 电路 142以同时或分时的方式， 只检测第 i行附近的行电极线上和第 j列 附近的列电极线上触控信号的变化， 来探测在 i行 j列处可操作显示元素 上的电极线是否被触碰。 寻址驱动时段就成为了寻址驱动和触控探测时段 (S+T时段）， 其驱动波形图如图 6所示。  During the address driving, the touch signal detecting circuit 142 in the touch circuit 140 performs touch detection on the i row and j columns of the display 110 having operable display elements, and the touch signal detecting circuit 142 simultaneously or divides In the time mode, only the change of the touch signal on the row electrode line near the i-th row and the column electrode line near the j-th column is detected to detect whether the electrode line on the operable display element at the i-row j-column is touched. bump. The address driving period becomes the address driving and touch detection period (S+T period), and its driving waveform is as shown in Fig. 6.
在显示器 100处于保持驱动时段，就是显示保持时段 (H时段）， 显示 / 触控信号加载电路 150， 在控制电路 160的控制下， 将显示驱动电路 130 所产生的未叠加任何其他信号的单纯保持态显示驱动信号， 输出给各行电 极线和列电极线， 让所有行电极线和所有列电极线间的电压差处于保持电 压， 所有显示像素均保持在之前所处的或开放状态或塌陷状态。  When the display 100 is in the hold driving period, that is, the display hold period (H period), the display/touch signal loading circuit 150, under the control of the control circuit 160, simply maintains the display drive circuit 130 without any other signals superimposed. The state displays the driving signal, which is output to each row of electrode lines and column electrode lines, so that the voltage difference between all the row electrode lines and all the column electrode lines is at the holding voltage, and all the display pixels are kept in the previous or open state or collapsed state.
当触控式干涉调制显示器 100反复在寻址驱动和触控探测时段和保持 驱动时段间转换时， 显示驱动和触控探测就复用了显示屏电极线， 形成既 可显示又可触控的触控式干涉调制显示器。其工作时序分配图如图 7所示。  When the touch-type interference modulation display 100 repeatedly switches between the address driving and the touch detection period and the sustain driving period, the display driving and the touch detection multiplex the display electrode lines to form both display and touch. Touch-type interference modulation display. Its work timing distribution diagram is shown in Figure 7.
当触控式干涉调制显示器 100是用于电影、 电视等高速变化的图案显 示时， 显示器 100每一帧显示内容都发生更换， 显示器 100可能完全没有 保持驱动的时段， 但按本实施方式仍能进行触控操作。 其工作时序分配图 如图 8所示。 以上内容是结合具体的优选实施方式对本发明所作的进一歩详细说 明， 不能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术 领域的普通技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若 干简单推演或替换， 都应当视为属于本发明的保护范围。 When the touch-sensitive interference modulation display 100 is used for pattern display of high-speed changes such as movies and televisions, the display content of each display of the display 100 is replaced, and the display 100 may not have a period of driving at all, but according to the embodiment, Do touch operations. Its work timing distribution diagram is shown in Figure 8. The above is a detailed description of the present invention in combination with specific preferred embodiments. It is to be understood that the specific implementation of the invention is not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims

权 利 要 求 书 Claim
1、一种触控式干涉调制显示器， 包括干涉调制显示屏和驱动电路； 在 显示屏的基板上设置有不少于两组 m条行电极线的行电极组、 n条列电极 线的列电极组和 mX n个显示像素，行电极组和列电极组分别连接各显示像 素两片电极中的一片， 行列两组电极间电极线相互交叉， 同组内各条电极 线互不相交，其中 m、 n是大于 2的自然数；驱动电路包括有显示驱动电路， 显示驱动电路对两组电极线施加显示驱动信号， 驱动各像素处于设定的显 示状态； 其特征在于： A touch type interference modulation display comprising an interference modulation display screen and a driving circuit; wherein a row electrode group of not less than two sets of m row electrode lines and a column of n column electrode lines are disposed on a substrate of the display screen The electrode group and the mX n display pixels, the row electrode group and the column electrode group are respectively connected to one of the two electrodes of each display pixel, and the electrode lines between the two groups of electrodes intersect each other, and the electrode lines in the same group do not intersect each other, wherein m, n is a natural number greater than 2; the driving circuit includes a display driving circuit, and the display driving circuit applies a display driving signal to the two sets of electrode lines to drive each pixel to be in a set display state;
驱动电路中还包括有触控电路， 所述触控电路具有触控激励源和触控 信号检测电路； 在显示屏处于显示状态的某一时间段内， 驱动电路在显示 驱动信号上叠加上触控激励源产生的交流成份的触控信号， 并施加到行电 极线和列电极线上， 并让行各电极线和列电极线间的电压差处于显示屏所 处显示状态的显示驱动电压值范围内， 显示屏电极线同时传输显示驱动信 号和触控信号； 触控电路中的触控信号检测电路同时或分时检测电极线上 触控信号的变化， 来探测各电极线是否被触碰； 显示驱动和触控探测同时 复用显示屏电极线。  The driving circuit further includes a touch circuit, wherein the touch circuit has a touch excitation source and a touch signal detection circuit; and the driving circuit superimposes the touch on the display driving signal during a certain period of time when the display screen is in the display state Controlling the touch signal of the AC component generated by the excitation source and applying it to the row electrode line and the column electrode line, and letting the voltage difference between each electrode line and the column electrode line be at the display driving voltage value of the display state of the display screen In the range, the display electrode line simultaneously transmits the display driving signal and the touch signal; the touch signal detecting circuit in the touch circuit detects the change of the touch signal on the electrode line at the same time or in a time-sharing manner to detect whether each electrode line is touched. ; Display drive and touch detection simultaneously multiplex display electrode lines.
2、 根据权利要求 1所述的触控式干涉调制显示器， 其特征在于： 驱动电路是对所述干涉调制显示屏的至少一条行电极线和多条列电极 线， 或至少一条列电极线和多条行电极线同时施加叠加触控信号的显示驱 动信号。  2. The touch-sensitive interference modulation display according to claim 1, wherein: the driving circuit is at least one row electrode line and a plurality of column electrode lines, or at least one column electrode line of the interference modulation display screen; A plurality of row electrode lines simultaneously apply display driving signals for superimposing the touch signals.
3、 根据权利要求 1所述的触控式干涉调制显示器， 其特征在于： 驱动电路是同时对所述干涉调制显示屏的所有行电极线和所有列电极 线同时施加叠加触控信号的显示驱动信号。  3. The touch-sensitive interference modulation display according to claim 1, wherein: the driving circuit is a display driving for simultaneously applying a superimposed touch signal to all of the row electrode lines and all column electrode lines of the interferometric display screen. signal.
4、根据权利要求 1或 2或 3所述的触控式干涉调制显示器，其特征在 于：  The touch-sensitive interference modulation display according to claim 1 or 2 or 3, wherein:
所述在行电极线的显示驱动信号上叠加的触控信号， 和列电极线的显 示驱动信号上叠加的触控信号， 是同频率、 同相位和等幅值的交流信号。  The touch signal superimposed on the display driving signal of the row electrode line and the touch signal superimposed on the display driving signal of the column electrode line are alternating signals of the same frequency, the same phase and the equal amplitude.
5、 根据权利要求 1所述的触控式干涉调制显示器， 其特征在于： 所述触控信号检测电路对显示屏电极线上触控信号变化进行检测， 是 对显示屏的所有电极线或部分电极线进行检测。 The touch-sensitive interference modulation display according to claim 1, wherein: the touch signal detecting circuit detects a change of a touch signal on a display electrode line, Detect all or part of the electrode lines of the display.
6、 根据权利要求 5所述的触控式干涉调制显示器， 其特征在于： 所述触控信号检测电路对显示屏的部分电极线上触控信号变化进行检 测， 是对显示屏具有可操作显示元素位置处的电极线进行检测。  The touch-sensitive interference modulation display according to claim 5, wherein: the touch signal detecting circuit detects a change of a touch signal on a part of the electrode lines of the display screen, and has an operable display on the display screen. The electrode line at the element position is detected.
7、 根据权利要求 1所述的触控式干涉调制显示器， 其特征在于： 所述的在显示屏处于显示状态的某一时间段内， 是指显示屏处于保持 驱动时段内的某一时间段， 在此时间段， 将叠加触控信号的显示驱动信号 施加到行电极线和列电极线上， 并让所有行电极线和所有列电极线间的电 压差处于保持电压值的范围内。  7. The touch-sensitive interference modulation display according to claim 1, wherein: the certain period of time when the display screen is in the display state refers to a certain period of time during which the display screen is in the hold driving period. During this period, the display driving signals of the superimposed touch signals are applied to the row electrode lines and the column electrode lines, and the voltage difference between all the row electrode lines and all the column electrode lines is within the range of the holding voltage value.
8、 根据权利要求 1和 7所述的触控式干涉调制显示器， 其特征在于: 所述的在显示屏处于保持驱动时段内， 进行的将叠加触控信号的显示 驱动信号施加到电极线上， 并检测电极线上触控信号的变化； 可以是在每 一次保持驱动时段内都进行，也可以不是在每一次保持驱动时段内都进行; 在进行触控信号变化检测的保持驱动时段内， 可以是进行一次检测， 也可 以是进行多次检测。  The touch-sensitive interference modulation display according to any one of claims 1 to 7, wherein: the display driving signal for superimposing the touch signal is applied to the electrode line while the display screen is in the sustain driving period. And detecting the change of the touch signal on the electrode line; it may be performed in each holding driving period, or may not be performed in each holding driving period; in the holding driving period of the touch signal change detection, It can be done once or multiple times.
9、 根据权利要求 1所述的触控式干涉调制显示器， 其特征在于： 所述的在显示屏处于显示状态的某一时间段内， 是指显示屏处于寻址 驱动时段内的某一时间段， 在此时间段， 将叠加触控信号的显示驱动信号 施加到行电极线和列电极线上， 并让被寻址到的行电极线上显示目标为开 放状态的显示像素， 行电极线和列电极线间的电压差处于开放状态电压值 的范围内； 让被寻址到的行电极线上显示目标为塌陷状态的显示像素， 行 电极线和列电极线间的电压差处于塌陷状态电压值的范围内； 让未被寻址 到的行电极线和所以列电极线间的电压差处于保持电压值的范围内。  9. The touch-sensitive interference modulation display according to claim 1, wherein: the display screen is in a display state for a certain period of time, and the display screen is at a certain time within the address driving period. a segment, during which the display driving signal of the superimposed touch signal is applied to the row electrode line and the column electrode line, and the displayed row electrode line displays the display pixel whose target is open, and the row electrode line The voltage difference between the column electrode line and the column electrode line is within the range of the open state voltage value; the display pixel on the addressed row electrode line is displayed with the target collapsed state, and the voltage difference between the row electrode line and the column electrode line is in a collapsed state. Within the range of the voltage value; let the voltage difference between the row electrode line not addressed and the column electrode line be within the range of the holding voltage value.
10、根据权利要求 1和 9所述的触控式干涉调制显示器，其特征在于: 所述的在显示屏处于寻址驱动时段内， 进行的将叠加触控信号的显示 驱动信号施加到电极线上， 并检测电极线上触控信号的变化； 可以是在每 一次寻址驱动时段内都进行，也可以不是在每一次寻址驱动时段内都进行; 在进行触控信号变化检测的寻址驱动时段内， 可以是进行一次检测， 也可 以是进行多次检测。  The touch-sensitive interference modulation display according to claim 1 or 9, wherein: the display driving signal for superimposing the touch signal is applied to the electrode line during the address driving period of the display screen. Up, and detecting the change of the touch signal on the electrode line; may be performed in each address driving period, or may not be performed in each address driving period; addressing in the touch signal change detection During the driving period, it may be performed once or multiple times.
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