EP0875881A3 - Active matrix light modulators, use of an active matrix light modulator, and display - Google Patents

Active matrix light modulators, use of an active matrix light modulator, and display Download PDF

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Publication number
EP0875881A3
EP0875881A3 EP98303334A EP98303334A EP0875881A3 EP 0875881 A3 EP0875881 A3 EP 0875881A3 EP 98303334 A EP98303334 A EP 98303334A EP 98303334 A EP98303334 A EP 98303334A EP 0875881 A3 EP0875881 A3 EP 0875881A3
Authority
EP
European Patent Office
Prior art keywords
frame
active matrix
voltage
pixel during
pixel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98303334A
Other languages
German (de)
French (fr)
Other versions
EP0875881A2 (en
Inventor
Sandra Gilmour
Martin David Tillin
Michael John Towler
Michael Geraint Robinson
Craig Tombling
Nicholas Mayhew
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of EP0875881A2 publication Critical patent/EP0875881A2/en
Publication of EP0875881A3 publication Critical patent/EP0875881A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • G09G3/36—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 liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • G09G3/36—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 liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general
    • 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
    • G09G3/36—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 liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3651—Control of matrices with row and column drivers using an active matrix using multistable liquid crystals, e.g. ferroelectric liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0823—Several active elements per pixel in active matrix panels used to establish symmetry in driving, e.g. with polarity inversion
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • 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
    • 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
    • G09G2310/065—Waveforms comprising zero voltage phase or pause
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • 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
    • G09G3/2011—Display of intermediate tones by amplitude modulation
    • 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
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources

Abstract

An active matrix light modulator, such as a thresholdless antiferroelectric active matrix liquid crystal display, comprises an active matrix of control elements 18 disposed at intersections of data lines 22 and scan lines 20, and an array 10 of pixels which are selectively addressable by data and scan signals applied to the control elements 18 by a data driver 12 and a scan driver 14. Such addressing is controlled so that a voltage is applied to each pixel during a corresponding addressing frame by the application of data and scan signals to an associated one of the control elements 18 in order to select the optical level of the pixel for each frame, and bipolar switching is applied to control the voltage applied to the pixel during successive subframes such that, when one optical level is selected for the frame, a positive voltage is applied to the pixel during one subframe of the frame and a negative voltage of equal magnitude but opposite polarity is applied to the pixel during another subframe of the frame and, when another optical level is selected for the frame, an intermediate voltage (preferably zero voltage) is applied to the pixel during both of the subframes of the frame, so as to provide DC balancing within the frame. The required grey level within each frame is accurately reproduced and is substantially independent of the previous state of the pixel. The use of such modulators to reduce the effects of asymmetrical optical performance and colour-sequential displays are also disclosed.
Figure 00000001
EP98303334A 1997-04-30 1998-04-29 Active matrix light modulators, use of an active matrix light modulator, and display Withdrawn EP0875881A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9708707 1997-04-30
GB9708707A GB2324899A (en) 1997-04-30 1997-04-30 Active matrix display

Publications (2)

Publication Number Publication Date
EP0875881A2 EP0875881A2 (en) 1998-11-04
EP0875881A3 true EP0875881A3 (en) 2000-03-01

Family

ID=10811553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98303334A Withdrawn EP0875881A3 (en) 1997-04-30 1998-04-29 Active matrix light modulators, use of an active matrix light modulator, and display

Country Status (4)

Country Link
EP (1) EP0875881A3 (en)
JP (1) JPH116994A (en)
KR (1) KR100300280B1 (en)
GB (1) GB2324899A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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US7773066B2 (en) 1999-03-26 2010-08-10 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device

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US6373497B1 (en) * 1999-05-14 2002-04-16 Zight Corporation Time sequential lookup table arrangement for a display
GB9813226D0 (en) * 1998-06-18 1998-08-19 Central Research Lab Ltd Method of,and apparatus for, driving a liquid crystal display device
US6262703B1 (en) * 1998-11-18 2001-07-17 Agilent Technologies, Inc. Pixel cell with integrated DC balance circuit
US6285346B1 (en) * 1998-12-18 2001-09-04 Philips Electronics North America Corporation Increased-frequency addressing of display system employing reflective light modulator
GB2345207A (en) 1998-12-22 2000-06-28 Sharp Kk Static clock pulse generator for LCD
US6597329B1 (en) * 1999-01-08 2003-07-22 Intel Corporation Readable matrix addressable display system
JP4637315B2 (en) 1999-02-24 2011-02-23 株式会社半導体エネルギー研究所 Display device
US7193594B1 (en) 1999-03-18 2007-03-20 Semiconductor Energy Laboratory Co., Ltd. Display device
US6952194B1 (en) 1999-03-31 2005-10-04 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device
US6545656B1 (en) 1999-05-14 2003-04-08 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device in which a black display is performed by a reset signal during one sub-frame
JP4801239B2 (en) * 1999-05-14 2011-10-26 株式会社半導体エネルギー研究所 Liquid crystal display
US6804029B2 (en) 2000-03-27 2004-10-12 Citizen Watch Co., Ltd. Liquid crystal shutter
JP2002122843A (en) 2000-10-12 2002-04-26 Sony Corp Dimmer device, method of driving the same and image pickup device
US6853018B2 (en) 2001-07-19 2005-02-08 Sony Corporation Semiconductor device having a channel layer, first semiconductor layer, second semiconductor layer, and a conductive impurity region
DE60115015T2 (en) * 2001-07-31 2006-06-01 Sony Corp. Liquid crystal cell system and method for improving a liquid crystal cell system
GB0121663D0 (en) * 2001-09-07 2001-10-31 Delphi Tech Inc Control method for a liquid crystal display
KR100685921B1 (en) * 2001-10-13 2007-02-23 엘지.필립스 엘시디 주식회사 Method For Driving Ferroelectric Liquid Crystal Display Device
FR2837052B1 (en) * 2002-03-07 2004-09-10 Thomson Licensing Sa METHOD FOR DISPLAYING A VIDEO IMAGE ON A DIGITAL DISPLAY DEVICE
CN1323379C (en) * 2003-04-02 2007-06-27 友达光电股份有限公司 Data driving circuit and its method of driving data
WO2009060372A2 (en) * 2007-11-08 2009-05-14 Koninklijke Philips Electronics N.V. Driving pixels of a display
KR102309599B1 (en) * 2017-04-11 2021-10-08 삼성디스플레이 주식회사 Organic light emitting display device

Citations (9)

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EP0241562A1 (en) * 1985-10-16 1987-10-21 Sanyo Electric Co., Ltd Liquid crystal display device
WO1991010223A1 (en) * 1989-12-22 1991-07-11 David Sarnoff Research Center, Inc. Field-sequential display system utilizing a backlit lcd pixel array and method for forming an image
US5182665A (en) * 1990-09-07 1993-01-26 Displaytech, Inc. Diffractive light modulator
WO1993013514A1 (en) * 1991-12-23 1993-07-08 Panocorp Display Systems Color fluorescent backlight for liquid crystal display
EP0586155A2 (en) * 1992-08-20 1994-03-09 Sharp Kabushiki Kaisha A display apparatus
EP0632426A1 (en) * 1993-06-30 1995-01-04 Sharp Kabushiki Kaisha Liquid crystal display device and method for driving the same
EP0686956A2 (en) * 1994-06-10 1995-12-13 Casio Computer Co., Ltd. Liquid crystal display apparatus using liquid crystal having ferroelectric phase and method of driving liquid crystal display device using liquid crystal having ferroelectric phase
EP0709717A2 (en) * 1994-10-25 1996-05-01 Sharp Kabushiki Kaisha Antiferroelectric liquid crystal device and method for driving the same
EP0768557A1 (en) * 1995-04-25 1997-04-16 Citizen Watch Co. Ltd. Method and apparatus for driving antiferroelectric liquid crystal display device

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JPS6068734A (en) * 1983-09-26 1985-04-19 Takaoka Ind Ltd Voltage current transmission system by optical fiber
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Patent Citations (9)

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EP0241562A1 (en) * 1985-10-16 1987-10-21 Sanyo Electric Co., Ltd Liquid crystal display device
WO1991010223A1 (en) * 1989-12-22 1991-07-11 David Sarnoff Research Center, Inc. Field-sequential display system utilizing a backlit lcd pixel array and method for forming an image
US5182665A (en) * 1990-09-07 1993-01-26 Displaytech, Inc. Diffractive light modulator
WO1993013514A1 (en) * 1991-12-23 1993-07-08 Panocorp Display Systems Color fluorescent backlight for liquid crystal display
EP0586155A2 (en) * 1992-08-20 1994-03-09 Sharp Kabushiki Kaisha A display apparatus
EP0632426A1 (en) * 1993-06-30 1995-01-04 Sharp Kabushiki Kaisha Liquid crystal display device and method for driving the same
EP0686956A2 (en) * 1994-06-10 1995-12-13 Casio Computer Co., Ltd. Liquid crystal display apparatus using liquid crystal having ferroelectric phase and method of driving liquid crystal display device using liquid crystal having ferroelectric phase
EP0709717A2 (en) * 1994-10-25 1996-05-01 Sharp Kabushiki Kaisha Antiferroelectric liquid crystal device and method for driving the same
EP0768557A1 (en) * 1995-04-25 1997-04-16 Citizen Watch Co. Ltd. Method and apparatus for driving antiferroelectric liquid crystal display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7773066B2 (en) 1999-03-26 2010-08-10 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device
US8125429B2 (en) 1999-03-26 2012-02-28 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device
US8149198B2 (en) 1999-03-26 2012-04-03 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device
US9373292B2 (en) 1999-03-26 2016-06-21 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device

Also Published As

Publication number Publication date
KR100300280B1 (en) 2001-09-06
GB9708707D0 (en) 1997-06-18
GB2324899A (en) 1998-11-04
JPH116994A (en) 1999-01-12
EP0875881A2 (en) 1998-11-04
KR19980081858A (en) 1998-11-25

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