EP0558059A2 - Dispositif d'affichage à cristaux liquides - Google Patents

Dispositif d'affichage à cristaux liquides Download PDF

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Publication number
EP0558059A2
EP0558059A2 EP93103104A EP93103104A EP0558059A2 EP 0558059 A2 EP0558059 A2 EP 0558059A2 EP 93103104 A EP93103104 A EP 93103104A EP 93103104 A EP93103104 A EP 93103104A EP 0558059 A2 EP0558059 A2 EP 0558059A2
Authority
EP
European Patent Office
Prior art keywords
electrodes
liquid crystal
substrates
opposite
substrate
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Withdrawn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
EP93103104A
Other languages
German (de)
English (en)
Other versions
EP0558059A3 (en
Inventor
Akira Ishizaki
Shigetoshi Sugawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of EP0558059A2 publication Critical patent/EP0558059A2/fr
Publication of EP0558059A3 publication Critical patent/EP0558059A3/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Withdrawn legal-status Critical Current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
    • G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
    • 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
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • 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
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
    • 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
    • G09G3/36—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

Definitions

  • the present invention relates to a liquid crystal display for displaying images and the like.
  • LCDs Liquid crystal displays
  • LCDs Liquid crystal displays
  • LCDs for displaying images by utilizing the orientation of liquid crystals
  • LCDs came into use in watches, desk-top electronic calculators, etc. to display relatively simple figures and symbols.
  • LCDs have come into use in televisions, etc. to display high-definition images.
  • One particular advantage of the use of a liquid crystal display is that it is possible to reduce the thickness of a screen. Hence, portable televisions and like small apparatuses are regarded as a promising use.
  • a movable apparatus such as a portable television
  • the apparatus must be light. It is often the case with an electrical apparatus that the weight of the power source, such as a battery, for driving the apparatus amounts to a large proportion of the total weight. Thus, it is very important for such an apparatus to have the lowest possible level of power consumption, and be able to operate for a long period of time with a small-capacity power source.
  • the means for controlling the potential of the opposite electrodes comprises the same means that are provided on the same substrate as pixel electrodes in order to control the gates of transistors of a driving circuit.
  • many wiring elements are necessary between the two substrates. This makes production processes complicated, and lowers the yield. In addition, the reliability of apparatuses may be impaired.
  • a primary object of the present invention is to provide a liquid crystal display capable of overcoming the above-described problems.
  • Another object of the present invention is to provide a liquid crystal display having a low level of power consumption and yet is highly reliable.
  • a further object of the present invention is to provide a liquid crystal display comprising: a pair of substrates; a liquid crystal sealed in a space between the substrates through the intermediary of a spacer; and electrodes provided on the substrates for applying voltages between selected electrodes on one of the substrates and corresponding ones on the other substrate so as to control the orientation of the liquid crystal in order to effect displays, wherein one of the substrates comprises an active-matrix substrate on which pixel electrodes are disposed in a matrix pattern and on which a transistor is disposed for each pixel electrode, and the other substrate supports thereon opposite electrodes and potential controlling means for controlling the potential of the opposite electrodes, the opposite electrodes being divided into sections parallel with scanning lines.
  • a preferred form of a liquid crystal display according to the present invention is as follows:
  • a liquid crystal display includes a liquid crystal sealed in a space between a pair of substrates through the intermediary of a spacer, and electrodes are provided on the substrates for applying voltages between selected electrodes on one of the substrates and corresponding electrodes on the other substrate so as to control the orientation of the liquid crystal in order to effect displays of image signals.
  • One of the substrates is an active-matrix substrate on which pixel electrodes are disposed in a matrix pattern and on which a transistor is disposed for each pixel electrode.
  • opposite electrodes and potential controlling means for controlling the potential of the opposite electrodes are provided, the opposite electrodes being divided into sections parallel with scanning lines.
  • potential controlling means for controlling the potential of opposite electrodes are provided on the same substrate as the opposite electrodes.
  • the opposite electrodes are divided into sections parallel with scanning lines, and the potential of each opposite-electrode section is inverted per line or per frame.
  • driving is possible with a power consumption level corresponding to the effective value, as in the conventional arrangement.
  • a bulk-transistor formed on a single-crystal Si substrate, which has been used in a reflection-type LCD, or a poly-crystal line or amorphous Si transistor for a transmission-type LCD, may be advantageously used, and a thin-film transistor (TFT) comprising a single-crystal Si thin film on a transparent substrate is preferably used.
  • TFT thin-film transistor
  • Fig. 6 schematically shows a section of the essential parts of a liquid crystal display according to the present invention.
  • the illustrated embodiment is a transmission-type liquid crystal display, in which switching elements comprise single-crystal Si transistors, and a driving circuit includes poly-crystalline Si transistors.
  • the liquid crystal display has a liquid crystal layer 605 between an active-matrix substrate structure 609 and an opposite-electrode substrate structure 610.
  • the active-matrix substrate structure 609 includes an insulating layer 601, transparent electrodes 602 for pixel capacitances, pixel electrodes 603, one of a pair of orientation control films 604 for aligning molecules of the liquid crystal, and single-crystal Si transistors 611.
  • the opposite-electrode substrate structure 610 includes the other orientation control film 604', opposite electrodes 606 (divided into a plurality of sections only one of which is shown), poly-crystalline Si transistors 607, and a transparent substrate 608.
  • Fig. 1 shows a circuit equivalent to a first embodiment of the present invention.
  • the circuit includes a first shift register 101 for sequentially driving scanning lines, a second shift register 102 for driving each display line, and a third shift register 103 for driving opposite electrodes.
  • the first and second shift registers 101 and 102 are provided on the same substrate as pixel electrodes, and the third shift register 103 is provided on the same substrate as the opposite electrodes.
  • the circuit further includes a plurality of transistors 104 for switching the pixel electrodes, a plurality of pixel capacitance elements 105, and a plurality of liquid-crystal capacitance elements 106.
  • the circuit includes sampling transistors 107, sampling capacitance elements 108, resetting transistors 109, T flip-flops 110, voltage switching elements 111, and transfer transistors 112.
  • the shift register 102 is actuated by a clock signal ⁇ HCK for determining the timing of the operation of sampling a video signal Video for pixels arranged in one of a plurality of horizontal rows (scanning lines), whereby the shift register 102 sequentially outputs pulses ⁇ HL1 , ⁇ HL2 , ⁇ HL3 ... .
  • sampling transistors 107 are sequentially turned on, so that the video signal is sequentially stored in corresponding sampling capacitance elements 108.
  • the above operation is repeated for one horizontal-row period (indicated by symbol "1H" in Figs. 2 and 3), so as to store the video signal for the particular scanning line in all the sampling capacitance elements 108.
  • the shift register 101 is actuated by applying each pulse of another clock signal ⁇ VCK , so that a gate voltage V n connected to an n th scanning line is brought to a high level thereof, thereby turning on corresponding transistors 104.
  • the shift register 101 is constructed such that such transistors 104 are turned on for a period of time coinciding with a period during which the clock signal ⁇ VCK is at a high level thereof.
  • the above operations 1 and 2 are performed for each horizontal-row period, that is, repeated until all the scanning lines (pixel rows) are covered, thereby completing driving for one frame.
  • Fig. 3 is another timing chart showing potentials V C1 to V C3 of first to third sections of opposite electrodes, a video signal input Video, and a potential V11 of the pixel electrode in the first line on the first column.
  • the potentials V C1 to V C3 of the opposite-electrode sections are shifted from each other by one horizontal-row period, and are inverted per frame.
  • the video signal Video is also inverted per frame in correspondence with the inversion of the opposite-electrode potentials.
  • the potential V11 of the first-line first-column pixel electrode corresponds to the potential V C1 of the first opposite-electrode section.
  • the potential (V C1 et seq.) of each section is inverted during a resetting period of the potential (V11 et seq.) of a certain pixel electrode.
  • Fig. 4 shows a circuit equivalent to a second embodiment of the present invention
  • Fig. 5 is a timing chart showing the operation of the second embodiment.
  • the potential of each opposite-electrode section is simply inverted per frame.
  • the voltage switching elements 111 are connected in a different manner for every other scanning line so that the potential of an opposite-electrode section corresponding to the n th line and the potential of another opposite-electrode section corresponding to the n+1 th line are brought into opposite phases.
  • driving is performed while the potentials of the opposite electrodes, etc. are inverted into an opposite phase line by line.
  • Figs. 7(a) and 7(b) show, in a plan view and a sectional view, respectively, the relevant parts of an embodiment in which a liquid crystal display includes metal electrodes provided on portions of opposite electrodes.
  • the metal electrodes also serve as a light-shielding layer, whereby the embodiment is adapted for color displays.
  • the liquid crystal display includes opposite electrodes 701, 701' which may be formed of a transparent indium-tin oxide (ITO) material.
  • Metal electrodes 702, 702' which may be formed of a tungsten (W) or aluminum (A1) material, also serve as a light-shielding layer.
  • the LCD further includes color filters 703, 703', insulating films 704, a glass substrate 705, and an orientation control film 706.
  • metal electrodes of a low resistivity are provided as auxiliary electrodes of opposite electrodes, and are able to serve as a light-shielding layer as well. Accordingly, it is possible to provide a color image with a blackened background, thereby allowing the image to sharply contrast with the background.
  • FIGs. 8(a) and 8(b) show another embodiment in which, similarly to the third embodiment, metal electrodes are provided on portions of opposite electrodes to serve as both auxiliary electrodes and a light-shielding layer.
  • a liquid crystal display according to the fourth embodiment includes opposite electrodes 801, 801', metal electrodes 802, 802', 802'', color filters 803, 803', insulating films 804, a glass substrate 805, and an orientation control film 806.
  • the fourth embodiment is distinguished in that gaps between the opposite electrodes are completely shielded from light so as to achieve higher light-shielding effect than that provided by the third embodiment.
  • a liquid crystal display according to the present invention includes opposite electrodes divided into sections parallel with scanning lines.
  • the opposite electrodes are inverted and driven by potential controlling means provided on the same substrate as the opposite electrodes. Accordingly, it is possible to decrease power consumption while the number of wiring elements between the substrates is decreased to improve the reliability of the apparatus. If metal electrodes are provided on portions of the opposite electrodes thus divided into sections, it is possible to improve the quality of color images, and to reduce resistivity.
  • a liquid crystal display includes a liquid crystal sealed in a space between a pair of substrates through the intermediary of a spacer, and electrodes provided on the substrates for applying voltages between selected electrodes on one of the substrates and corresponding ones on the other so as to control the orientation of the liquid crystal in order to effect displays.
  • one of the substrates is an active-matrix substrate on which pixel electrodes are disposed in a matrix pattern with a transistor being disposed for each pixel electrode
  • the other substrate supports thereon both opposite electrodes divided into sections parallel with scanning lines and a potential controlling device for controlling the potential of the opposite electrodes. Since the opposite electrodes are inverted and driven by the potential controlling device on the same substrate as the opposite electrodes, power consumption can be decreased while the number of wiring elements between the substrates is decreased to improve reliability.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Power Engineering (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
EP19930103104 1992-02-28 1993-02-26 Liquid crystal display Withdrawn EP0558059A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP75977/92 1992-02-28
JP7597792A JP3069930B2 (ja) 1992-02-28 1992-02-28 液晶表示装置

Publications (2)

Publication Number Publication Date
EP0558059A2 true EP0558059A2 (fr) 1993-09-01
EP0558059A3 EP0558059A3 (en) 1994-07-13

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EP19930103104 Withdrawn EP0558059A3 (en) 1992-02-28 1993-02-26 Liquid crystal display

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EP (1) EP0558059A3 (fr)
JP (1) JP3069930B2 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622655A2 (fr) * 1993-04-22 1994-11-02 Matsushita Electric Industrial Co., Ltd. Dispositif d'affichage, méthode de commande, et appareil d'affichage à projection qui l'utilise
FR2736733A1 (fr) * 1995-07-12 1997-01-17 Lg Electronics Inc Dispositif d'affichage a cristaux liquides procede d'utilisation d'un tel dispositif
EP1139327A2 (fr) * 2000-03-30 2001-10-04 Mitsubishi Denki Kabushiki Kaisha Dispositif d'affichage à cristaux liquides
WO2001073743A1 (fr) * 2000-03-28 2001-10-04 Seiko Epson Corporation Afficheur a cristaux liquides, procede et dispositif de commande d'un afficheur a cristaux liquides, dispositif electronique
EP1414009A1 (fr) * 2002-10-24 2004-04-28 Dialog Semiconductor GmbH Reduction de la consommation d'énergie pour contrôleurs d'affichages à cristaux liquides par partage de charge des plaques arrière
US6862014B2 (en) * 2001-10-05 2005-03-01 Casio Computer Co., Ltd. Display driving apparatus and driving control method
US6914589B2 (en) * 2001-10-13 2005-07-05 Lg. Philips Lcd Co., Ltd. Method of driving ferroelectric liquid crystal display
US6999054B2 (en) * 2001-05-04 2006-02-14 Hannstar Display Corp. Active matrix display and driving method thereof
US7084852B2 (en) * 2002-03-13 2006-08-01 Matsushita Electric Industrial Co., Ltd. Liquid crystal panel driving device
US7336249B2 (en) 1996-03-26 2008-02-26 Semiconductor Energy Laboratory Co., Ltd. Driving method of active matrix display device
US7420533B2 (en) * 2002-04-08 2008-09-02 Lg Display Co., Ltd. Liquid crystal display and driving method thereof
US9240153B2 (en) 2006-07-03 2016-01-19 Japan Display Inc. Liquid crystal device, method of driving liquid crystal device, and electronic apparatus

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007058235A (ja) * 1996-03-26 2007-03-08 Semiconductor Energy Lab Co Ltd アクティブマトリクス型表示装置の駆動方法
KR100516533B1 (ko) * 1997-03-26 2005-12-16 세이코 엡슨 가부시키가이샤 액정장치,전기광학장치및그것을사용한투사형표시장치
KR100524888B1 (ko) * 1997-08-26 2006-03-09 삼성전자주식회사 듀얼 공통 전원 액정 디스플레이 패널 구동 장치
JP3376376B2 (ja) * 1999-03-19 2003-02-10 富士通ディスプレイテクノロジーズ株式会社 液晶表示装置及びそれを用いた電子機器
JP2005062396A (ja) * 2003-08-11 2005-03-10 Sony Corp 表示装置及びその駆動方法
KR100712121B1 (ko) * 2005-02-24 2007-04-27 삼성에스디아이 주식회사 리플 노이즈를 줄이기 위한 필터링부를 구비한 액정표시장치
TW200719310A (en) 2005-08-05 2007-05-16 Sony Corp Display device
JP4577143B2 (ja) * 2005-08-05 2010-11-10 ソニー株式会社 表示装置
JP5193628B2 (ja) * 2008-03-05 2013-05-08 株式会社ジャパンディスプレイイースト 表示装置
JP4890491B2 (ja) * 2008-03-31 2012-03-07 株式会社半導体エネルギー研究所 電子装置の作製方法
JP2009282332A (ja) * 2008-05-22 2009-12-03 Sharp Corp 液晶表示装置
JP5315916B2 (ja) * 2008-10-17 2013-10-16 富士通株式会社 マトリクス表示素子およびマトリクス表示装置
JP5766012B2 (ja) * 2010-05-21 2015-08-19 株式会社半導体エネルギー研究所 液晶表示装置
KR20120050114A (ko) * 2010-11-10 2012-05-18 삼성모바일디스플레이주식회사 액정 표시 장ㅊ치 및 그 구동 방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179922A1 (fr) * 1984-04-20 1986-05-07 Hosiden Corporation Element d'affichage a cristaux liquides en couleurs
EP0224388A2 (fr) * 1985-11-22 1987-06-03 Nec Corporation Dispositif de visualisation à cristaux liquides à matrice active
EP0336570A1 (fr) * 1988-03-11 1989-10-11 Matsushita Electric Industrial Co., Ltd. Méthode de contrôle d'un dispositif d'affichage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179922A1 (fr) * 1984-04-20 1986-05-07 Hosiden Corporation Element d'affichage a cristaux liquides en couleurs
EP0224388A2 (fr) * 1985-11-22 1987-06-03 Nec Corporation Dispositif de visualisation à cristaux liquides à matrice active
EP0336570A1 (fr) * 1988-03-11 1989-10-11 Matsushita Electric Industrial Co., Ltd. Méthode de contrôle d'un dispositif d'affichage

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622655A2 (fr) * 1993-04-22 1994-11-02 Matsushita Electric Industrial Co., Ltd. Dispositif d'affichage, méthode de commande, et appareil d'affichage à projection qui l'utilise
EP0622655A3 (fr) * 1993-04-22 1995-09-13 Matsushita Electric Ind Co Ltd Dispositif d'affichage, méthode de commande, et appareil d'affichage à projection qui l'utilise.
US6177965B1 (en) 1993-04-22 2001-01-23 Matsushita Electric Industrial Co., Ltd. Display device and projection-type display apparatus using the device
FR2736733A1 (fr) * 1995-07-12 1997-01-17 Lg Electronics Inc Dispositif d'affichage a cristaux liquides procede d'utilisation d'un tel dispositif
US7336249B2 (en) 1996-03-26 2008-02-26 Semiconductor Energy Laboratory Co., Ltd. Driving method of active matrix display device
WO2001073743A1 (fr) * 2000-03-28 2001-10-04 Seiko Epson Corporation Afficheur a cristaux liquides, procede et dispositif de commande d'un afficheur a cristaux liquides, dispositif electronique
US6906692B2 (en) 2000-03-28 2005-06-14 Seiko Epson Corporation Liquid crystal device, liquid crystal driving device and method of driving the same and electronic equipment
US7268761B2 (en) 2000-03-28 2007-09-11 Seiko Epson Corporation Liquid crystal device, liquid crystal driving device and method of driving the same, and electronic equipment
EP1139327A2 (fr) * 2000-03-30 2001-10-04 Mitsubishi Denki Kabushiki Kaisha Dispositif d'affichage à cristaux liquides
EP1139327B1 (fr) * 2000-03-30 2004-06-23 Mitsubishi Denki Kabushiki Kaisha Dispositif d'affichage à cristaux liquides
US6999054B2 (en) * 2001-05-04 2006-02-14 Hannstar Display Corp. Active matrix display and driving method thereof
US6862014B2 (en) * 2001-10-05 2005-03-01 Casio Computer Co., Ltd. Display driving apparatus and driving control method
US6914589B2 (en) * 2001-10-13 2005-07-05 Lg. Philips Lcd Co., Ltd. Method of driving ferroelectric liquid crystal display
US7084852B2 (en) * 2002-03-13 2006-08-01 Matsushita Electric Industrial Co., Ltd. Liquid crystal panel driving device
US7764260B2 (en) 2002-03-13 2010-07-27 Panasonic Corporation Liquid crystal panel driving device
US8035602B2 (en) 2002-03-13 2011-10-11 Panasonic Corporation Liquid crystal panel driving device
US7420533B2 (en) * 2002-04-08 2008-09-02 Lg Display Co., Ltd. Liquid crystal display and driving method thereof
US7161593B2 (en) 2002-10-24 2007-01-09 Dialog Semiconductor Gmbh Power reduction for LCD drivers by backplane charge sharing
EP1414009A1 (fr) * 2002-10-24 2004-04-28 Dialog Semiconductor GmbH Reduction de la consommation d'énergie pour contrôleurs d'affichages à cristaux liquides par partage de charge des plaques arrière
US9240153B2 (en) 2006-07-03 2016-01-19 Japan Display Inc. Liquid crystal device, method of driving liquid crystal device, and electronic apparatus
US9697784B2 (en) 2006-07-03 2017-07-04 Japan Display Inc. Liquid crystal device, method of driving liquid crystal device, and electronic apparatus

Also Published As

Publication number Publication date
EP0558059A3 (en) 1994-07-13
JPH05241124A (ja) 1993-09-21
JP3069930B2 (ja) 2000-07-24

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