CN101490596B - Display control system for micromirror device - Google Patents
Display control system for micromirror device Download PDFInfo
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- CN101490596B CN101490596B CN2007800262233A CN200780026223A CN101490596B CN 101490596 B CN101490596 B CN 101490596B CN 2007800262233 A CN2007800262233 A CN 2007800262233A CN 200780026223 A CN200780026223 A CN 200780026223A CN 101490596 B CN101490596 B CN 101490596B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
- G02B26/0841—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD the reflecting element being moved or deformed by electrostatic means
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- 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
- G09G3/346—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 modulation of the reflection angle, e.g. micromirrors
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0235—Field-sequential colour display
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
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- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
- G09G3/2037—Display of intermediate tones by time modulation using two or more time intervals using sub-frames with specific control of sub-frames corresponding to the least significant bits
Abstract
This invention provides a display control system that includes: a) a micromirror array comprising a plurality of mirrors; b) a first control function for controlling the mirrors in a first state; c) a second control function for controlling the mirrors in a second state; d) and a switchover controller for switching from the first state to second state, or from the second state to first state, wherein the switchover controller switches the state of at least two mirrors simultaneously at a same predetermined point within a frame period.
Description
Technical field
The present invention relates to image display system, more particularly, relate to the spatial light modulator with special setting and control or the display system of light source.
Background technology
Even realizing technical the obtained obvious improvement of electromechanical micromirror devices in recent years, but when adopting them to show, still there are limitation and difficulty so that high quality graphic to be provided as spatial light modulator.Particularly, along with the display system of HDTV form catches on, the picture size on the screen is also increasing, is 100 " or bigger as diagonal-size.When specification be comprise 1920 * 1080 pixels 100 " during sized image, the Pixel Dimensions on the screen is greater than 1mm.Similarly be, 50 that " in sized image and the XGA pixel, Pixel Dimensions is 1mm.The observer can see each pixel on the screen, and for this reason, display system need be greater than a large amount of gray levels of 10 or 16, so that high quality display systems is provided.And when with digital form control display image, because the fact that can not come display image with the gray level of sufficient amount, picture quality affects adversely.
Electromechanical micromirror devices has received sizable concern because of its application as spatial light modulator (SLM).Spatial light modulator needs the array of a large amount of relatively micro-mirror devices.In general, for each SLM, the scope of the quantity of required device arrives millions of 60,000.With reference to Figure 1A, references to U.S. patent 5,214, disclosed Digital Video System 1 comprises display screen 2 in 420.Light source 10 is used to produce the luminous energy that finally illuminates display screen 2.The light 9 that produces is further understood coalescence guiding lens 12 by mirror 11.Lens 12,13 and 14 form the light beam focuser, and this light beam focuser is focused into light beam 8 with light 9.Control spatial light modulator 15 by the data that on data cable 18, transmit by computing machine, will optionally leading lens 5 again on screen 2, to show from the part of the light in path 7.SLM 15 has surface 16, but this surface 16 comprises the array of switch reflecting element, but described switch reflecting element for example is a micro-mirror device 32, for example as the element 17,27,37 and 47 that is engaged to the reflecting element of the hinge shown in Figure 1B (hinge) 30.When parts 17 are in a position, from a part of light in path 7 along the path 6 lens 5 that lead again, lens 5 with this part light along the path 4 enlarge or diffusion with irradiation display screen 2, be illuminated pixel 3 thereby form.When parts 17 were in the another location, this part light was not by the display screen 2 that leads again, and pixel 3 is dark thus.
As at United States Patent (USP) 5,214, in 420 and the opening and closing state of the micro mirror controlling schemes that realizes of most conventional display system aspect display quality, have limitation.Specifically, the application of the conventional configurations of control circuit faces following limitation: the gray level of conventional system (PWM between the open and close state) is subject to LSB (that is, least significant bit (LSB), or minimum pulse width).Because the Open-closure state of realizing in the conventional system, thereby can not provide the pulse width shorter than LSB.The minimum brightness of determining gray level is the light that reflects during minimum pulse width.Limited gray level causes image to show deterioration.
Specifically, Fig. 1 C shows and is used for according to patent 5,285 exemplary circuit diagram of the control circuit of the prior art of 407 micro mirror.This control circuit comprises memory cell 32.Various transistors are called " M
*", wherein " * " specifies transistor number, and each transistor all is an insulated gate FET.Transistor M5 and M7 are the p channel transistors; And transistor M6, M8 and M9 are the n channel transistors.Capacitor C 1 and C2 represent capacitive load that memory cell 32 is presented.Memory cell 32 comprises access switch transistor M9 and latch 32a, and this is the basis of static random-access switch storage (SDRAM) design.Whole access transistor M9 in the delegation receive from the data of corresponding lines 31a (DATA) signal not.By using row (ROW) signal to come the appropriate row selecting transistor M9 of conducting, the particular memory cell 32 that write is carried out access as word line.Latch 32a is formed by two cross-linked phase inverters (that is, M5/M6 and M7/M8), and it permits two kinds of steady state (SS)s.State 1 is that node A is high and Node B is low, and the state 2 low and Node B height that is node A.
The bifurcation switch as shown in the figure of control circuit to micro mirror control be located at open or closing angle towards, shown in Figure 1A.Brightness (that is the display gray scale of numerical control picture system) is determined by the duration that micro mirror rests on the open site.Micro mirror is controlled in the duration of open site and is controlled by a plurality of words.For simplifying illustration, Fig. 1 D shows " the scale-of-two time interval " by four word controls the time.Shown in Fig. 1 D, this duration has each the relative value 1,2,4,8 of relative brightness that limits successively in four, and wherein, 1 is used for least significant bit (LSB), and 8 are used for highest significant position.According to shown in controlling mechanism, be used for by the minimum controllable difference between the gray level of the different brackets display image of light intensity by the amount that in the shortest controlled duration, micro mirror is maintained the light intensity of open site " least significant bit (LSB) " expression.
When adjacent image pixels has been illustrated significantly different grey-scale because of the grade of controllable gray scale level is very coarse, between these adjacent image pixels, show pseudomorphism (artifact).This causes image deterioration.When having " greater distance " of gray level between the adjacent image pixels, remarkable especially at the bright district image deterioration that shows.In women model's image, observe, show pseudomorphism at forehead, nose both sides and upper arm.These pseudomorphisms are to produce because numerical control shows the technology limitation that enough gray levels can not be provided.At the brightened dot place that shows, for example, forehead, nose both sides and upper arm, neighbor show visible light intensity gap.
Have full open position or complete off-position because micro mirror is controlled so as to, thereby light intensity is determined by the duration that this micro mirror is in full open position.In order to increase the quantity of gray-scale displayed level, must increase the speed of micro mirror so that digital control signal can increase to higher figure place.
Yet when increasing the speed of micro mirror, micro mirror must have stronger hinge to keep the operating cycle of the needed quantity of operation lifetime of design.In order to drive the micro mirror on the hinge that is bearing in further reinforcement, need higher voltage.Higher voltage may exceed 20 volts, and even may be up to 30 volts.The micro mirror of making by application CMOS technology is unsuitable for operating in high like this voltage range probably, thus, may need the DMOS micro-mirror device.In order to realize the gray level control of higher degree, when realizing the DMOS micro mirror, need more complicated manufacturing to handle and bigger device area.Thus, the normal mode of micro mirror control faces such technological challenge, that is, because of the restriction of operating voltage, show in order to help micro mirror littler and that cost is more worthwhile, must sacrifice grey level accuracy.
The many patents that have relevant light intensity control.These patents comprise: United States Patent (USP) 5,589,852,6,232,963,6,592,227,6,648,476 and 6,819,064.Also there are other patents and the patented claim of relevant difformity light source.These patents comprise United States Patent (USP) 5,442,414,6,036,318 and apply for 20030147052.United States Patent (USP) 6,746,123 disclose the special polarization light source that is used to prevent light loss.Yet these patents or patented claim are not provided for overcoming the not enough and circumscribed effective solution that causes of gray level in the factor control image display system.
And, there are many patents of relevant spatial light modulation, comprising: United States Patent (USP) 2,025,143,2,682,010,2,681,423,4,087,810,4,292,732,4,405,209,4,454,541,4,592,628,4,615,595,4,728,185,4,767,192,4,842,396,4,907,862,5,214,420,5,506,597,5,489,952,6064,366,6535,319, and 6,880,936.Yet these inventions do not solve or provide the immediate solution that allows those of ordinary skills overcome above-mentioned limitation and difficulty.
Therefore, using the image display system field of numerical control micro mirror array, still need to provide new-type and improved system so that can solve above-mentioned difficulties as spatial light modulator.
Summary of the invention
The present invention relates to be used to control the new-type display control program of micro mirror array with a plurality of mirrors.This control system is controlled at first state and second state realizing gray level with mirror, and has the switching control function portion that is used for second state that mirror is switched to from first state.This predetermined point of switching control function portion in frame time switches the state of a plurality of mirrors.It has reduced the operation that is used to control mirror.And the timing that changes switching point has been optimized brightness and has been reduced visual artefacts with the time portion that changes this two states of control.
To those skilled in the art, to after the detailed description of the preferred embodiment, these and other objects of the present invention and advantage become apparent undoubtedly below having read, in different figure illustration preferred implementation.
Description of drawings
Below, with reference to following figure, describe the present invention.
Figure 1A is the figure that is used to provide the display technique of background of the present invention and prior art.
Figure 1B is the figure that is used to provide the display technique of background of the present invention and prior art.
Fig. 1 C is the figure that is used to provide the display technique of background of the present invention and prior art.
Fig. 1 D is the figure that is used to provide the display technique of background of the present invention and prior art.
Fig. 2 illustrates the concept map of the embodiment of the structure of display system according to the preferred embodiment of the present invention.
Fig. 3 is that illustration constitutes the concept map of the structure of the pixel cell 211 of spatial light modulation parts according to the preferred embodiment of the present invention.
Fig. 4 A is the key diagram that the opening of micro mirror is shown.
Fig. 4 B is the line chart that is illustrated in the light intensity that obtains under the opening of micro mirror.
Fig. 5 A is the key diagram that the closed condition of micro mirror is shown.
Fig. 5 B is the line chart that is illustrated in the light intensity that obtains under the closed condition of micro mirror.
Fig. 6 A is the key diagram that the oscillatory regime of micro mirror is shown.
Fig. 6 B is the line chart that is illustrated in the light intensity that obtains under the oscillatory regime of micro mirror.
Fig. 7 is used to illustrate the alternative control circuit figure that has two transistor arrays of two column line at two electrodes.
Fig. 8 is used to illustrate the alternative control circuit figure that has two transistor arrays of a column line at two electrodes.
Fig. 9 is the figure that is used for being illustrated in the modulation timing figure that controller realizes.
Figure 10 is the figure that is used for being illustrated in another modulation timing figure that controller realizes.
Figure 11 is the line chart of illustration according to the realization of the oscillatory regime of the micro mirror in the display system of embodiment of the present invention.
Figure 12 is the figure that is used for being illustrated in another modulation timing figure that controller realizes, wherein, mirror is controlled to first state, and that continues sequentially switches to second state with it and do not become closed condition at predetermined point.
Figure 13 is the figure that is used for being illustrated in another modulation timing figure that controller realizes, wherein, has closed condition between first state and second state.
Figure 14 is the figure that is used for being illustrated in another modulation timing figure that controller realizes, wherein, at first state that is initially located in of frame, and is in second state at the end of frame.
Figure 15 is the figure that is used for being illustrated in the control method that controller realizes, wherein, at least the second state is controlled by non-binary data.
Figure 16 is the figure that is used for being illustrated in another modulation timing figure that controller realizes, wherein, the control function portion that is used for switching can switch to the state of a plurality of pixels second state or switch to first state from second state from first state simultaneously at least two definite positions at a frame.
Figure 17 is the functional diagram that is used to illustrate the display system that realizes color field preface technology.
Figure 18 is the figure that is used for being illustrated in the control method that controller realizes, wherein, will comprise that the input signal of (m+n) bit binary data is divided into high m position and low n position, and high m position is by first State Control, and low n position is by second State Control.
Figure 19 A is the figure that is used for being illustrated in another modulation timing figure that controller realizes, wherein, will comprise that the input signal of (m+n) bit binary data is divided into high m position and low n position.
Figure 19 B is the figure that is used for being illustrated in another modulation timing figure that controller realizes, wherein, will comprise that the input signal of (m+n) bit binary data is divided into high m position and low n position.
Figure 19 C is the figure that is used for being illustrated in another modulation timing figure that controller realizes, wherein, will comprise that the input signal of (m+n) bit binary data is divided into high m position and low n position.
Figure 20 is the figure that is used for being illustrated in another modulation timing figure that controller realizes, wherein, by the time pin that reduces the shut-in time a plurality of pixels is carried out simultaneously from the control that utilizes first state in a frame and is shifted to the control of the control that utilizes second state.
Figure 21 is the figure that is used for illustrating the sequential chart of the brightness that the modulation timing figure that realizes at controller as shown in Figure 20 provides.
Figure 22 is the figure that is used for illustrating the sequential chart of the bright pixel that as shown in Figure 20 the modulation timing figure in that controller is realized provides is changed in period at a frame or a frame, wherein, change the light intensity of Figure 21 by keeping same brightness, and a plurality of pixels are carried out simultaneously from the transfer of first state to second state by the time pin that calculates.
Figure 23 is the figure that is used for illustrating as shown in Figure 20 the modulation timing figure in that controller is realized provides at a frame or the frame sequential chart of the bright pixel in the period.
Figure 24 is the figure that is used for illustrating the sequential chart of the bright pixel of being changed in period at a frame or a frame that provides according to as shown in Figure 20 the modulation timing figure in that controller is realized, wherein, change the light intensity of Figure 23 by keeping same brightness, and a plurality of pixels are carried out simultaneously from the transfer of first state to second state by the time pin that calculates.
Figure 25 illustrates the concept map of the structure of the grenade instrumentation of single board system according to the preferred embodiment of the present invention.
Figure 26 is the concept map of structure of grenade instrumentation that many plates system of another preferred implementation according to the present invention is shown.
Figure 27 A is the side view of the combining optical of grenade instrumentation according to the preferred embodiment of the present invention.
Figure 27 B is the front elevation of the combining optical of grenade instrumentation according to the preferred embodiment of the present invention.
Figure 27 C is the rear view of the combining optical of grenade instrumentation according to the preferred embodiment of the present invention.And
Figure 27 D is the plan view from above of the combining optical of grenade instrumentation according to the preferred embodiment of the present invention.
Embodiment
Fig. 2 is the functional block diagram that is used to illustrate the representative configuration of display system of the present invention.Fig. 3 has described to constitute the sectional view of the pixel cell 211 of spatial light modulation parts according to the preferred embodiment of the present invention.
With reference to Fig. 2, display system 100 comprises control system 300.Display system 100 also comprises the micro mirror array with a plurality of micro mirrors.Display control program 300 is controlled at first state and second state with micro mirror 212.This display system also realizes being used for switching to second state or switching to the switching control function portion of first state from second state from first state, wherein, the state of mirror is switched at a frame in this switching control function portion at predetermined point in the period shown in Fig. 4 A and 4B, Fig. 5 A and 5B and Fig. 6 A and 6B.And in a preferred embodiment, the state of a plurality of mirrors is switched at a frame in switching control function portion at predetermined point in the period.
The advantage that system shown in Figure 2 has is, it has reduced the burden of processor processing signals when single frame sequentially uses two kinds of different modulation and control time slot method in the period, and it need calculate time of using two kinds of methods and the timing that changes at each pixel.The present invention is by setting up the fixing burden that regularly makes it possible to reduce at the signal Processing of mirror control.In the present invention, what processor can be in a frame shifts in predetermined two time portion of dividing at control, only calculates the time that is used to carry out two kinds of control methods at a plurality of pixels with being equal to, and can reduce the time of signal Processing.As illustrative among Fig. 2, comprise according to the display system 100 of present embodiment: spatial light modulation parts 200, control device 300, light source 510 and projection optics system 520.
Illustrative as Fig. 3 etc., comprise according to the spatial light modulation parts 200 of present embodiment: pel array 210, row driver 220, line driver 230 and external interface unit 240.Pel array 210 be characterised in that from row driver 220 vertically extending bit lines 221 and with a plurality of pixel cells 211 of each position grid-like arrangement that intersects from line driver 230 horizontally extending word lines 231.
Illustrative as Fig. 3,4A, 5A and 6A, each pixel cell 211 all comprises micro mirror 212, micro mirror 212 is bearing on the hinge 213 that is formed on the substrate, and is allowed to freely swing by different pitch angle with respect to the hinge 213 that extends from substrate 214 approximate vertical.Hinge electrode 213a comprises that being symmetrical in hinge 213 ground is arranged on the closed electrode 215 on the substrate 214 and closes retainer 215a and unlatching electrode 216 and unlatching retainer 216a.When predetermined voltage was applied to closed electrode 215, this closed electrode 215 utilized the Coulomb force to attract micro mirror 212 and it is rocked to and closes the contacted position of retainer 215a.The incident light 511 that is projected to micro mirror 212 reflexes to light path along the closing direction from the light shaft offset of projection optics system 130.Predetermined voltage is being applied to when opening electrode 216, this unlatchings electrode 216 utilizes Coulomb force attraction micro mirror 212 and it is rocked to and opens the contacted position of retainer 216a.The incident light 511 that is projected to micro mirror 212 reflexes to light path along the opening direction identical with the optical axis of projection optics system 520.
To close capacitor 215b and be connected to closed electrode 215, and by gate transistor 215c this be closed capacitor 215b and be connected to bit line 221-1.Be connected to and open electrode 216 and will open capacitor 216b, and should open capacitor 216b by gate transistor 216c and be connected to bit line 221-2.Input to the conducting of the signal controlling gate transistor 215c of word line 231 and gate transistor 216c and end.
The pixel cell 211 that is connected to the horizontal line of random word line 231 is selected simultaneously, and control by bit line 221-1 and bit line 221-2 to the electric capacity charging of opening capacitor 216b with from the discharge of opening capacitor 216b, control the On/Off of the micro mirror in each pixel cell 211 in this horizontal line thus separately.External interface unit 240 comprises timing controller 241 and parallel/serial line interface 242.Timing controller 241 is selected the pixel cell 211 of horizontal line based on the scanning timing controling signal 432 from selector switch 324 outputs by the signal that inputs to word line 231.
Parallel/serial line interface 242 provides control signal 440 to row driver 220.Light source 510 projects incident light 511 on the spatial light modulation parts 200, so that the reflected light 512 on the light path is by projection optics system 520.Then, projection light 513 is projected on the screen (not shown), with display image.
The spatial light modulation parts 200 that comprise data extractor 310 and data converter 320 according to control device 300 controls of present embodiment.Control device 300 is controlled display gray scale by the On/Off state (that is On/Off modulation) and the oscillatory regime (that is vibration modulation) of the micro mirror 212 of control spatial light modulation parts 200.Data extractor 310 is carried out and is separated as the function of binary load according to the 400 binary video picture signals 400 that receive.This binary data is separated into is used for micro mirror 212 is controlled at data 410 under the On/Off modulation, and further be separated into and be used for micro mirror 212 is controlled at data 420 under the oscillatory regime.Data extractor 310 is also carried out the function that output is used for the synchronizing signal 430 of control data converter 320.Data converter 320 comprises: first status unit 321, second status unit 322, timing control unit 323 and selector switch 324.First status unit 321 is carried out such function, promptly, produce first mirror control signal 411 of non-binary data based on the mask data 410 of binary data, and export this signal 411 to spatial light modulation parts 200 by selector switch 324, thus micro mirror 212 is controlled at the On/Off state.Second status unit 322 produces second mirror control signal 421 of non-binary data based on the mask data 420 of binary data, and export this signal 421 to spatial light modulation parts 200 by selector switch 324, thus micro mirror 212 is controlled at oscillatory regime.
Each pixel component of spatial light modulation parts 200 (that is, pixel cell 211) is the micro mirror 212 that is controlled under a kind of state (that is, On/Off state, oscillatory regime or intermediateness).Present embodiment is configured to, and controls the On/Off state by first mirror control signal 411 from first status unit 321, and oscillatory regime and intermediateness are controlled by second mirror control signal 421 from second status unit 322.Spatial light modulation parts 200 are according to the gap length of first mirror control signal 411 and second mirror control signal 421, and based on the regularly requirement of control according to arithmetic logical operation, carry out light intensity (that is light intensity) modulation.
Below description the basic controlling according to the micro mirror 212 of the spatial light modulation parts 200 of present embodiment is described.The function representation that is limited by Va (1,0) is opened electrode 216 during this period and is kept open circuit and do not apply definite voltage on it to the predetermined voltage Va that closed electrode 215 applies.On the other hand, the function of voltage that is limited by Va (0,1) is represented not apply voltage and apply voltage Va to opening electrode 216 to closed electrode 215.And, represent not to closed electrode 215 or open electrode 216 not apply voltage by the function of voltage that Va (0,0) limits, and Va (1,1) expression is to closed electrode 215 with open electrode 216 the two all applies high voltage.
Fig. 4 A, 4B, 5A, 5B, 6A and 6B show and comprise micro mirror 212, hinge 213, closed electrode 215 and the structure of opening the pixel cell 211 of electrode 216.These figure also show micro mirror 212 under the On/Off state and oscillatory regime under control.Fig. 4 A shows the control that micro mirror 212 begins to swing from neutral condition when applying voltage on opening electrode 216.By only being applied to Va (0,1) the expression predetermined voltage of opening electrode 216.Under the opening of micro mirror 212, reflected light 512 is through projection optics system 520 and as image projection light 513.Fig. 4 B shows the light intensity that throws under opening.
Fig. 5 A shows the control that micro mirror 212 begins to swing from neutral condition when applying voltage on closed electrode 215.Only apply predetermined voltage Va (1,0) to closed electrode 215.Under the closed condition of micro mirror 212, reflected light 512 thus, departs from the light path of projection light 513 from projection optics system 520 deflections.Fig. 5 B shows in off position the light intensity of projection down.
Fig. 6 A illustration when the optical projection that micro mirror is controlled to micro mirror 212 when having free oscillation, this free oscillation have angle position when electrode 216 is opened in micro mirror contact (, complete opening) the peak swing A0 between another angle position when contacting closed electrode 215 (, close fully).Incident light 511 angle in accordance with regulations is incident upon on the micro mirror 212.Catoptrical intensity when mirror is in opening direction and reflex to opening direction and the part of the light intensity of the centre of closing direction (, the light intensity of reflected light 512) is incident to projection optics system 520.The brightness of image, that is, projection light 513 is shown having the light intensity when micro mirror 212 is controlled as oscillatory regime in Fig. 6 B.Shown in Fig. 4 A, when micro mirror 212 was operated in opening, reflected light 512 was reflected onto opening direction and is projected to optical system 520 as projection light 513.Shown in Fig. 5 A, when micro mirror 212 was operated in closed condition, reflected light 512 was reflected onto closing direction, left optical system 520, departed from the light path of projection light 513.
As shown in Figure 6A, when micro mirror 212 was operated in oscillatory regime, the part of the luminous flux of reflected light 512, diffraction light, diffused light etc. are reflected onto projection optics system 520 and projection is projection light 513, and the projection light intensity changes in time.
Note embodiment shown in above-mentioned Fig. 4 A, 4B, 5A, 5B, 6A and the 6B, be applied to closed electrode 215 or open electrode 216 by binary value 0 or the 1 voltage Va that represents.Alternatively, by being increased in closed electrode 215 and opening the step-length of the Coulomb force that produces between the electrode 216 and further the step-length of magnitude of voltage Va is increased to a plurality of values, realize trickleer control to the pendulum angle of micro mirror 212.And, note embodiment shown in above-mentioned Fig. 4 A, 4B, 5A, 5B, 6A and the 6B, with micro mirror 212, promptly hinge electrode 213a is controlled at earth potential; Alternatively, also can realize trickleer control by apply offset voltage to it to the pendulum angle of micro mirror 212.
Present embodiment is configured to, and in the centre of the wobble deviation of micro mirror 212 between opening and closed condition, applies voltage in corresponding appropriate timing, that is, Va (0,1), Va (1,0) and Va (0,0), as described below.By producing, realize meticulousr gray level less than the amplitude A 1 of the peak swing A0 between opening and the closed condition and the free oscillation of A2.
Another advantage of this system construction and switching control function portion is, the quantity of alignment can be decreased to half shown in Fig. 7 and 8.Fig. 7 shows the system that every pixel has two electrodes: in the present invention, produce two control signals as the output to each pixel from row driver.The first control function portion uses the alignment of input column decoder, and the second control function portion shown in Figure 8 uses the mode line of input column decoder, and controls all pixels in the line simultaneously.In this illustrative embodiments, the spatial light modulation parts 200 shown in Fig. 7 are realized two bit lines 221-1 and 221-2 when needed, and control is by each pixel cell 211 of row driver 220 controls respectively.
Simultaneously, Fig. 8 shows optical modulator component 200 between another exemplary space, wherein, is equipped with column decoder 250 between row driver 220 and each pixel cell 211.Column decoder 250 according to from the bit lines 221 of row driver 220 to column decoder 250 inputs, is controlled the logic state of two lines (that is, bit line 221-1 and bit line 221-2) based on the pattern control line 251 of outside input.In the control period of first mirror control signal 411, when pattern control line 251 was " 0 ", if bit line is " 0 ", then column decoder 250 was realized (bit line 221-1, bit line 221-2)=(0,1), and if bit line 221 is " 1 ", (bit line 221-1, bit line 221-2)=(1,0) then.
In the control period of second mirror control signal 421, be two kinds of situations of " 0 " and " 1 " at pattern control line 251, column decoder 250 is realized (bit line 221-1, bit line 221-2)=(0,0).Thus, utilize first mirror control signal 411 and the 3rd mirror control signal 422 to control micro mirror 212.The structure of Fig. 8 provides such benefit,, the quantity of the bit line by row driver 220 control can be reduced to half of quantity of the structure of Fig. 7 that is.Spatial light modulation parts 200 according to the display system 100 of present embodiment both can constitute according to said structure as shown in Figure 7, can constitute according to said structure as shown in Figure 8 again.
Sequential chart with reference to the control system of Fig. 9, wherein control system is controlled at first state and second state with the SLM micro mirror, first state comprises the opening and the closed condition of mirror, and second state comprises state or the oscillatory regime that is controlled in the state between opening and closing.The advantage of utilizing the system of this controlling schemes to have is that it makes it possible to realize more high-grade gray level than the system that only has first state by add low light intensity with second state.Therefore, the controlling schemes of Fig. 9 first mirror control signal 411 and being used to that is used to control the On/Off of micro mirror 212 control micro mirror 212 vibration second mirror control signal 421 and be combined into modulator control signal 440.Compare with the situation of only using On/Off control, realized the more fine grade of controllable light intensity, and obtained more high-grade gray level thus.
With reference to Figure 10, realize another control method in system with the 3rd control function portion that is used for switching to the third state.The control function portion that realizes in this display system is used for micro mirror is switched to the third state or switches to second state from the third state from second state.This control function portion also is realized as and is used for switching to the third state or switching to first state from the third state from first state.This control function portion also be realized as be used for a frame really allocation switch the state of a plurality of pixels simultaneously.This display system provides the attendant advantages of the gray level that makes it possible to realize higher quantity.The controllable light intensity of the lower amount of third state increase.Display system with controllable light intensity as shown in figure 10 can be by making up the gray level that first, second and the third state realize bigger quantity.According to Figure 10, except first mirror control signal 411 and second mirror control signal 421, also by control micro mirror 212 so that it carries out additional modulation control by vibrating than second mirror control signal, 421 littler amplitudes.
Figure 11 is used to illustrate micro mirror to be controlled so as to the light strength ratio of controlling unit in the control timing figure and the minimum when applying identical incident light of first state, second state and third state operation.If the control of first state provides 256 grades of gray levels, the system that then makes up the control of second state provides 1024 grades of gray levels.And the system of the control of the combination third state provides 4096 grades of gray levels.According to Figure 11, when applying modulation control as illustrated, realize the gray level of bigger quantity.Figure 11 shows the control method based on above-mentioned method shown in Figure 10, and by the duration of oscillation T that adjusts micro mirror 212 light intensity of projection light 513 is controlled to be by micro mirror being remained on about 1/4th (1/4) and ten sixths (1/16) of the light intensity that opening obtains in identical duration.Specifically, the amplitude A of the vibration by micro mirror 212 is set to realize about 1/4 light strength ratio with respect to the amplitude A 1 (50%) of peak swing A0.And the amplitude A of the vibration by micro mirror 212 is set to realize about 1/16 light strength ratio with respect to the amplitude A 2 (25%) of peak swing A0.Show 256 grades of gray levels by in a frame of video image displayed, changing the time be used to be controlled at opening.The combination of aforementioned control and the additional control by vibration being adjusted in amplitude A 1 (that is first state) makes can show 1024 grades of gray levels.And the combination of the free-running operation between opening (that is first state of a control), amplitude A 1 (that is second state of a control) and amplitude A 2 (that is three control-state) makes can produce 4096 grades of gray levels.
Figure 12 shows another embodiment according to the modulator control signal 440 of another embodiment.In Figure 12, modulator control signal 440 comprises that first mirror control signal 411 and second mirror control signal, 421, the first mirror control signals 411 and second mirror control signal 421 are adjacent one another are at switching clock time ts.Therein mirror is controlled at first state, then sequentially switches to second state and do not translate in the system of closed condition and realize this control method at predetermined point.This control method has several advantages.Because this method has been eliminated every frame and all mirror has been controlled at a control under the closed condition, so can reduce computing.Because this method has been eliminated every frame and all mirror has been controlled at a control under the closed condition, so prolonged the mirror life-span.Because it is synchronous neighbor being transformed into the timing of opening, so reduced moving target pseudomorphism (empty profile) on every side.
Figure 13 illustration be used for another control method in the modulation of display system control mirror.This control system is controlled at the duration of the closed condition between first state and second state.The advantage that this control method has is, allows controller to have the longer processing time to control second state, and the more pin-point accuracy of control mirror modulation is provided thus.According to Figure 13, apply another modulator control signal 440.Modulator control signal as shown in the figure comprises the first specular attitude control signal 411, and applies this first specular attitude control signal be delayed time t1 after the display frame of being represented by T0 begins.After finishing the first specular attitude control signal 411, also life period postpones t2 before applying the second specular attitude control signal 421.Therefore, since the end clock time of second mirror control signal 421 applies time delay t1 may be relevant with the flexible frame display time interval that is adjustable as the beginning clock time that is synchronized to first mirror control signal 411 that belongs to next frame display time interval.By a frame display time interval of representing by T0 begin be provided with the beginning time delay t1, provide following benefit: allow to begin at least the additional treatments time of t1 time delay, handle first mirror control signal 411 in the next frame display time interval that follows second mirror control signal 421 closely.And, utilize first mirror control signal 411 and t2 interval time between second mirror control signal 421 in display frame period T0, the feasible processing time that also can have at subsequently second mirror control signal 421.
Figure 14 illustration another mirror modulation control method of in display system, realizing.This control system is controlled at first state and is controlled at second state during at this frame end when a frame begins.This control method has several advantages.Because in each display frame, eliminated the closed condition of mirror, reduced computing.Because in each display frame, eliminated the closing control state, so prolonged the mirror life-span.Because synchronous timing of opening neighbor, so reduced pseudomorphism (empty profile) around the moving target.Because synchronous timing of opening consecutive frame, so reduced pseudomorphism (empty profile) around the moving target.According to Figure 14, modulator control signal is included in the variable interval time t2 that is arranged in the frame display time interval T0 between first mirror control signal 411 and second mirror control signal 421.The beginning clock time of first mirror control signal 411 is consistent with the beginning clock time of a frame display time interval T0, and the end clock time of second mirror control signal 421 is consistent with the end clock time of a frame display time interval T0.This has formed following state: sequenced frame connects the mode of frame, and arbitrarily first mirror control signal 411 in the selected frame display time interval T0 and second mirror control signal 421 produce continuously with corresponding second mirror control signal 421 and first mirror control signal 411 among the frame display time interval T0 subsequently.As a result, obtained with above-mentioned Figure 12 in the control modulation phase realized with benefit.
With reference to Figure 15, its illustration another mirror modulation control method, wherein, at least the second state is controlled by non-binary data.This control method provides special advantage: modulate the rule of control according to the application binary data, be independent of the weighting factor ground control mirror that is applied to a plurality of.According to Figure 15, modulator control signal 440 illustrations following situation: produce first mirror control signal 411 of PWM by the corresponding binary data in Senior Three position, and utilize low two situations that produce second mirror control signal 421 of non-binary data with five binary video picture signals 400.By with binary data low two convert to decimal number and by to this decimal numeral each (for example use same weighting factor in the position separately, the weighting factor of the LSB of binary data) produces bit string, thereby second mirror control signal 421 is produced as non-binary data.
With reference to Figure 16, display system realizes another modulation control method, and wherein, the state that the control function portion that will be used for the switching controls state is embodied as simultaneously a plurality of pixels switches to second state or switches to first state from second state from first state.Can at least two schedule times in display frame state simultaneously take place switches.The advantage that this control method has is, as shown in figure 17, in the color field sequential display system, a frame is divided into RGB (red, green and blue), and switches the state of a plurality of pixels simultaneously according to fixing arrangement.This modulation control method makes it possible to realize more high-grade gray level.
According to Figure 17, display system 100A illustration utilize the single board system of single spatial light modulation parts 200.This display system 100A comprises: single spatial light modulation parts 200, control device 300, frame memory 301, light source driving circuit 302, colour wheel motor-drive circuit 303, light source 510 and colour wheel (color wheel) 510a.From light source 510 to the incident light 511 of spatial light modulation parts 200 projection before this light projects spatial light modulation parts 200, pressing three primary colors (that is, R, G and B) by execution colour wheel 510a in a frame display time interval T0 throws according to the time sequencing mode.A frame display time interval T0 is divided into each by the sequential scheduling of R, G and G, and by modulator control signal 440 control micro mirrors 212, this modulator control signal 440 all comprises first mirror control signal 411 and second mirror control signal 421 in each, as above-mentioned shown in Figure 16.This make then can as the respective fields of the R, the G that in the display system 100A of the colored field sequential system of RGB, in a frame display time interval T0, divide and B in, by the control switching schedule that presets from first state (promptly with the state of a plurality of pixels, first mirror control signal 411) roughly side by side switches to second state (that is second mirror control signal 421).
With reference to Figure 18, system realizes another modulation control method, wherein, will comprise that the input signal of (m+n) bit binary data is divided into high m position and low n position.Specifically, in Figure 18, to modulate control word and be arranged to, will comprise that the high eight-bit (m=8) of the binary video picture signal 400 of 10 bit binary data is appointed as first mirror control signal 411, and low two (n=2) of remainder is appointed as second mirror control signal 421.High m position is realized as the mirror that is controlled at first state of operation, and low n position is realized as the mirror that is controlled at second state of operation.Control method shown in Figure 180 has several advantages.At first, the data bit of the control function of first state and second state specified fix, can simplify to produce and be used to control mirror so that its processing in the control signal of first and second state of operation.And, each the maximum specific data in first and second states is fixed.Therefore, can easily determine to press the fixed time at the switching schedule between the state of a plurality of pixels.
With reference to Figure 19 A, 19B and 19C, system realizes another modulation control method, wherein, will comprise that the input signal of (m+n) bit binary data is divided into high m position and low n position.High m position is realized as the mirror that is controlled at first state of operation, and low n position is realized as the mirror that is controlled at second state of operation.Can change the ratio of m and n.Control method shown in Figure 19 A, 19B and 19C has several advantages.At first, can be reduced to the control mirror so that its at first state of operation and the figure place of appointment, and the LSB of first state has more long duration.This makes it possible to handle first state slowlyer.And, can increase the figure place that is assigned to first state, be used to thus control mirror so that its time at first state of operation longer.This can increase the brightness of demonstration.When the situation of image pattern 19A, 19B and 19C changes the figure place that is assigned to first mirror control signal 411 and second mirror control signal 421 like that, can carry out according to following rule as embodiment.If the highest part of bit string that is assigned to second mirror control signal 421 is for " 0 ", the part of the lowermost portion of bit string that then can be by will being assigned to first mirror control signal 411 is displaced to the high side of second mirror control signal 421 and carries out data-switching.According to this processing,, change the m position of first mirror control signal 411 and the n position of second mirror control signal 421 by between first nonzero digit at higher part of the lowermost portion of first mirror control signal 411 and second mirror control signal 421, being shifted.By carrying out shifting processing, change the figure place be assigned to first mirror control signal 411 and second mirror control signal 421, make can change effectively can be by 411 controls of first mirror control signal brightness and the relativeness that can pass through between the brightness that second mirror control signal 421 controls.
Figure 19 A illustration when binary video picture signal 400 is eight gray levels, be assigned to first mirror control signal 411 and with two situations that are assigned to second mirror control signal 421 with six.Equally, Figure 19 B illustration be assigned to first mirror control signal 411 and with three situations that are assigned to second mirror control signal 421 with five.Similarly be, Figure 19 C illustration be assigned to first mirror control signal 411 and with four situations that are assigned to second mirror control signal 421 with four.These illustrative embodiments illustrations the modulation control method by binary data is cut apart, and it can also be by application class like handling in another illustrative embodiments binary load according to converting decimal data to.
With reference to Figure 20 to 23, system realizes another modulation control method, wherein, another modulation control of second state of application is transferred in control from the modulation control of using first state, and wherein, carry out transfer simultaneously at a plurality of pixels in same display frame, this has reduced the shut-in time of control function.Specifically, in Figure 20, in the identical duration, control and the ratio of the brightness that the brightness that shows shows with being controlled by second mirror control signal 421 is one to four promptly 1/4 by first mirror control signal 411.Therefore, specify second mirror control signal 421 and first mirror control signal 411 of a unit interval of four unit interval proportional.The feasible time ratio that can change neatly between first mirror control signal 411 and second mirror control signal 421 is controlled in this modulation in a frame display time interval T0, and can not change the brightness of pixel in a frame display time interval T0.
Control method shown in Figure 20 to 23 provides several advantages.At first, synchronous luminous timing between neighbor, and reduced moving target around pseudomorphism (empty profile).And, synchronous between consecutive frame luminous timing and reduced moving target around pseudomorphism (empty profile).According to the ratio of the light intensity that shows by first state and second state shown in Figure 20 and as shown in figure 21 in a frame or the frame bright pixel in the period, control and treatment can be converted to as shown in figure 22.Modulation after conversion control can keep same brightness, and can carry out transfer from first state to second state simultaneously to a plurality of pixels at the time pin that calculates.This makes it possible to reduce the shut-in time of mirror.To convert the unit interval that is equal to 20 second mirror control signals 421 to the unit interval that illustrative five first mirror control signals 411 among Figure 21 are equal to, thus, increase the control period of second mirror control signal 421, as shown in figure 22.Therefore, can not change the brightness value of a pixel in the frame display time interval T0 from the conversion of the setting that is set to Figure 22 of Figure 21.
With reference to Figure 20,23 and 24, system realizes another modulation control method, and wherein, control is from operating mirror and transfer to by using second state and operate mirror by using first state.According to determining that control function portion carries out, in a frame, a plurality of pixels are carried out transfer simultaneously, to reduce the opening time by time pin.Control method as shown in Figure 20,23 and 24 has several advantages.At first, can be minimized in and carry out the needed luminous period that image shows in the frame, and this has reduced mobile fuzzy.And, the light intensity of controlling first state and second state as illustrated in fig. 20 and control a frame or bright pixel the situation with as illustrated in fig. 23 operation of frame in the period under, can the modulation control transformation become modulation control as shown in figure 24.Then, mirror is controlled to be operating as keeps same brightness, and can carry out simultaneously from of the conversion of first state a plurality of pixels at the time pin that calculates to second state.This makes it possible to reduce the opening time of mirror.Specifically, Figure 23 illustration the combination of ten chronomeres of three unit interval of first mirror control signal 411 (below, also be called " chronomere ") and second mirror control signal 421 is changed over the situation of combination of two chronomeres of five chronomeres of first mirror control signal 411 and second mirror control signal 421.Figure 23 and 24 situation are before change combination and also all kept the brightness of the pixel in the frame display time interval T0 afterwards.
Figure 25 is used to illustrate the functional block diagram of the structure of grenade instrumentation according to the preferred embodiment of the present invention.Grenade instrumentation 5010 according to present embodiment comprises: single spatial light modulator (SLM) 5100, control module 5500, total internal reflection (TIR) prism 5300, projection optics system 5400 and light source optical system 5200, as shown in Figure 25.This grenade instrumentation 5010 is the so-called single panel type grenade instrumentations 5010 that comprise single spatial light modulator 5100.Spatial light modulator 5100 and TIR prism 5300 are set on the optical axis of projection optics system 5400, and light source optical system 5200 is provided with by the mode that its optical axis has the angle different with the optical axis of projection optics system 5400.TIR prism 5300 provides such function, promptly, make and to incide spatial light modulator 5100 as incident light 5601 in the angle of inclination in accordance with regulations, and make that the reflected light 5602 of near normal ground reflection is transmitted through projection optics system 5400 on spatial light modulator 5100 from the irradiates light 5600 of light source optical system 5200 incidents that are positioned at a side.
Figure 26 is the functional block diagram that is used to illustrate the structure of the grenade instrumentation of another preferred implementation according to the present invention.Grenade instrumentation 5020 is the so-called many plates projectoscopes that comprise a plurality of spatial light modulators 5100 (that is, 5100R, 5100G and 5100B), and it is different from above-mentioned grenade instrumentation 5010.This grenade instrumentation 5020 comprises a plurality of spatial light modulators 5100, and light separation/combining optical 5310 is arranged between projection optics system 5400 and each spatial light modulator 5100.This light separation/combining optical 5310 comprises: TIR prism 5311, colour splitting prism 5312 and colour splitting prism 5313.TIR prism 5311 has the function that the irradiates light 5600 from the optical axis side incident of projection optics system 5400 is guided to spatial light modulator 5100 sides.Colour splitting prism 5312 has following function: red (R) light is separated from the incident light 5601 by 5311 incidents of TIR prism, make this ruddiness be incident to ruddiness spatial light modulator 5100R, and the reflected light 5602R of ruddiness is guided to TIR prism 5311.
Similar with above-mentioned image display system, colour splitting prism 5313 has following function: blue (B) light and green (G) light are used spatial light modulator 5100G from separate and be projected to the blue spatial light modulator 5100B that uses through the incident light 5601 of TIR prism 5311 with green, and the reflected light 5602B of blue light and the reflected light 5602G of green glow are guided to TIR prism 5311.Therefore, the spatial light modulation of R, G and B three looks is carried out simultaneously at three spatial light modulator 5100 places respectively, and reflected light 5602R, 5602B after the modulation operations and 5602G become by projection optics system 5400 and be incident upon on the screen 5900 to carry out the colored projection light 5603 that shows.
In this illustrative embodiments of grenade instrumentation 5020, control module 5500 is provided with similarly with above-mentioned control device 300, and this control device 300 utilizes the aforesaid modulator control signal 440 that has made up first mirror control signal 411 and second mirror control signal 421 to control a plurality of spatial light modulators 5100.Should be understood that the multiple modification that to expect light separation/combining optical, but not be subject to light separation/combining optical 5310.
Figure 27 A, 27B, 27C and 27D are the structural maps of optical system that utilizes the grenade instrumentation of a plurality of spatial light modulators 5100.Figure 27 A is the side view according to the combining optical of present embodiment; Figure 27 B is a front elevation; Figure 27 C is a rear view; And Figure 27 D is a plan view from above.Optical system according to the grenade instrumentation 5030 of present embodiment comprises: device encapsulation 5100A, color combining optical 5340, light source optical system 5200 and the variable light source 5210 of integrally having incorporated a plurality of spatial light modulators 5100 into.The a plurality of spatial light modulators 5100 (that is, the spatial light modulation parts 200) that are incorporated in the device encapsulation 5100 are fixing as follows: the rectangular profile of each modulator 5100 all tilts at surface level with respect to each the bar limit of the device encapsulation 5100A with similar rectangular profile and reaches about 45 degree.
Color combining optical 5340 is arranged on the device encapsulation 5100A.This color combining optical 5340 comprises owing to being bonded together with the prism 5341 that waits the right angle trigonometry bar that triangular prism forms in formation on the longitudinal side and 5342 and owing to the leaded light piece 5343 by the bottom surface right angle wedge that engagement ramp forms on the side of prism 5341 and 5342 of mode up.Prism 5341 and 5342 is provided with absorber of light 5344, and this absorber of light 5344 is arranged on the side of the face that wherein is bonded with leaded light piece 5343 and on the opposition side.
The bottom of leaded light piece 5343 is equipped with the light source optical system 5200 with green laser light source 5212 and has red laser light source 5211 and the light source optical system 5200 of blue laser light source 5213, and each in them all has vertical optical axis.Launch the side that is positioned at prism 5341 tight belows that the irradiates light 5600 that comes incides spatial light modulator 5100 from green laser light source 5212, as incident light 5601 by leaded light piece 5343 and prism 5431.And, launch the opposite side that is positioned at prism 5342 tight belows that the irradiates light 5600 that comes incides spatial light modulator 5100 from red laser light source 5211 and blue laser light source 5213 respectively, as incident light 5601 by leaded light piece 5343 and prism 5342.
Be incident upon redness and the direction reflection vertically upward of blue incident light 5601 edges on the spatial light modulator 5100, as seeing through the reflected light 5602 of prism 5342 further to reflect from bonding outer surface.According to this order, light transmission prism 5342, the light transmission projection optics system 5400 subsequently, to come display image by applying projection light 5603.Simultaneously, green incident light 5601 is projected to spatial light modulator 5100 and reflection vertically upward, to see through prism 5341 projections as reflected light 5602, and the outer surface along the light path identical with red and blue reflected light 5602 from prism 5341 further reflects, and is incident to projection optics system 5400.The light that sees through projection optics system 5400 projections is processed to be projection light 5603 during in opening at the state of operation of mirror 212.
As mentioned above, be provided among the single assembly encapsulation 5100A according to the lens device of present embodiment and comprise at least two spatial light modulators 5100.A module only is used to shine from the incident light 5601 of green laser light source 5212.Another module utilization of spatial light modulator 5100 is at least from red laser light source 5211 or from the irradiation of the incident light of blue laser light source 5213.Each light modulated by these two spatial light modulators, 5100 modulation is projected to color combining optical 5340 respectively, as mentioned above.Further amplify from the light of color combining optical projection, and project on the screen 5900 etc., as being used for the projection light 5603 that image shows by projection optics system 5400.And, grenade instrumentation 5030 according to present embodiment comprises control device 300, it is according to the combination of aforesaid various embodiments and various control methods, utilizes to comprise that the modulator control signal 440 of first mirror control signal 411 and second mirror control signal 421 controls spatial light modulator 5100.
Although invention has been described according to current preferred implementation, should be understood that this restriction that openly should not be construed as.For ability field technology personnel, read above-mentioned open after, various alternatives examples and modification are undoubtedly with obviously.Therefore, claims are interpreted as covering whole alternative examples and the modification that falls in true spirit of the present invention and the scope.
Claims (16)
1. display control program, this display control program comprises:
A) micro mirror array, this micro mirror array comprises a plurality of mirrors;
B) control function portion, this control function portion are used to control described mirror so that it is operated in the first modulation state of a control and the second modulation state of a control; And
C) switch controller, this switch controller are used to control from the described first modulation state of a control to the described second modulation state of a control or the switching from the described second modulation state of a control to the described first modulation state of a control,
Wherein, described switch controller switches the state of described mirror at a frame at predetermined point in the period.
2. display control program according to claim 1, wherein:
Described switch controller side by side switches the state of at least two mirrors at a frame at predetermined point in the period.
3. display control program according to claim 1, wherein:
The described second modulation state of a control comprises mode of operation or the oscillatory regime that described mirror is controlled at the position between opening angle position and the closing angle position.
4. display control program, this display control program comprises:
A) micro mirror array, this micro mirror array comprises a plurality of mirrors;
B) control function portion, this control function portion is used to control described mirror, so that it is operated in the first modulation state of a control, the second modulation state of a control operation and the 3rd modulation state of a control; And
C) switch controller, this switch controller are used for controlling a switching of modulating state of a control to the different modulating state of a control from the described first modulation state of a control, the described second modulation state of a control or described the 3rd modulation state of a control;
Wherein, described switch controller switches the state of described mirror at a frame at predetermined point in the period.
5. display control program according to claim 1, wherein:
Described switch controller is controlled to be described mirror sequentially and switches to described second state from described first state, wherein, modulate state of a control at described switch controller between the transfer period of the described second modulation state of a control, under the described mirror inoperation in off position from described first.
6. display control program according to claim 1, wherein:
Between described first modulation state of a control and the described second modulation state of a control, there is closed condition.
7. display control program according to claim 1, wherein:
When the described first modulation state of a control is arranged in a frame and begins, and will described second modulate state of a control when being arranged in described frame end.
8. display control program according to claim 1, wherein:
Described control function portion receives the numerical data that is used to control described modulation state of a control, and controls at least one modulation state of a control by the non-binary data that derives from described numerical data.
9. display control program according to claim 1, wherein:
Described switch controller switches to different conditions with the modulation state of a control of a plurality of pixels from a modulation state of a control two prearranged times at least simultaneously in a frame.
10. display control program according to claim 1, wherein:
Described control function portion receives the input signal that comprises (m+n) bit binary data, and described (m+n) binary digit is divided into high m position and low n position, and wherein, m and n represent first positive integer and second positive integer respectively.
11. display control program according to claim 10, wherein:
Described high m position is used to control described mirror so that it is operated in the described first modulation state of a control, and described low n position is used to control described mirror so that it is in the described second modulation state of a control operation.
12. display control program according to claim 10, wherein:
Described control function portion also adjusts the ratio of described m and described n.
13. display control program according to claim 10, wherein:
Described binary data is also cut apart in described control function portion, so that the position between the lowest side of described m position and first nonzero digit moves to the upper side of described n position, thereby increases described n position by reducing described m position.
14. a display control program, this display control program comprises:
A) micro mirror array, this micro mirror array comprises a plurality of mirrors;
B) control function portion, this control function portion are used for described mirror is controlled at the first modulation state of a control and the second modulation state of a control;
D) switch controller, this switch controller are used for controlling a switching of modulating state of a control to the different modulating state of a control from described first modulation state of a control and the described second modulation state of a control, and
E) computation processor, this computation processor are determined the timing of switching between the state of a control in modulation based on the brightness of importing data into.
15. display control program according to claim 14, wherein:
Described switch controller is also according to determining that described computation processor carries out, control the described switching between described first modulation state of a control and the described second modulation state of a control, at least two described mirrors with the pixel that shows at display image separately switch described modulation state of a control simultaneously, with the reduction shut-in time.
16. display control program according to claim 14, wherein:
Described switch controller is also according to determining that described computation processor carries out, control the described switching between described first modulation state of a control and the described second modulation state of a control, at least two described mirrors with the pixel that shows at display image separately switch described modulation state of a control simultaneously, with the reduction opening time.
Applications Claiming Priority (5)
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| US83052106P | 2006-07-13 | 2006-07-13 | |
| US60/830,521 | 2006-07-13 | ||
| US11/827,902 | 2007-07-12 | ||
| US11/827,902 US7880736B2 (en) | 2003-11-01 | 2007-07-12 | Display control system for micromirror device |
| PCT/US2007/015937 WO2008008462A2 (en) | 2006-07-13 | 2007-07-13 | Display control system for micromirror device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101490596A CN101490596A (en) | 2009-07-22 |
| CN101490596B true CN101490596B (en) | 2011-07-06 |
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|---|---|---|---|
| CN2007800262233A Expired - Fee Related CN101490596B (en) | 2006-07-13 | 2007-07-13 | Display control system for micromirror device |
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| CN (1) | CN101490596B (en) |
| GB (1) | GB2453877A (en) |
| WO (1) | WO2008008462A2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126843A (en) * | 1994-03-07 | 1996-07-17 | 德克萨斯仪器股份有限公司 | Optimized electronic operation of digital micromirror devices |
| US5771116A (en) * | 1996-10-21 | 1998-06-23 | Texas Instruments Incorporated | Multiple bias level reset waveform for enhanced DMD control |
| US6547399B2 (en) * | 1999-01-28 | 2003-04-15 | Duke University | Image engine having multiple image sources with different response times for color operation |
| US6570550B1 (en) * | 1994-12-22 | 2003-05-27 | Displaytech, Inc. | Active matrix liquid crystal image generator |
-
2007
- 2007-07-13 WO PCT/US2007/015937 patent/WO2008008462A2/en active Application Filing
- 2007-07-13 GB GB0823325A patent/GB2453877A/en not_active Withdrawn
- 2007-07-13 CN CN2007800262233A patent/CN101490596B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126843A (en) * | 1994-03-07 | 1996-07-17 | 德克萨斯仪器股份有限公司 | Optimized electronic operation of digital micromirror devices |
| US6570550B1 (en) * | 1994-12-22 | 2003-05-27 | Displaytech, Inc. | Active matrix liquid crystal image generator |
| US5771116A (en) * | 1996-10-21 | 1998-06-23 | Texas Instruments Incorporated | Multiple bias level reset waveform for enhanced DMD control |
| US6547399B2 (en) * | 1999-01-28 | 2003-04-15 | Duke University | Image engine having multiple image sources with different response times for color operation |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008008462A2 (en) | 2008-01-17 |
| GB2453877A (en) | 2009-04-22 |
| CN101490596A (en) | 2009-07-22 |
| GB0823325D0 (en) | 2009-01-28 |
| WO2008008462A3 (en) | 2008-09-04 |
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