JP2007058177A - 液晶表示装置、液晶表示装置の駆動方法及びチャージシェア回路 - Google Patents
液晶表示装置、液晶表示装置の駆動方法及びチャージシェア回路 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 67
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 230000020169 heat generation Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
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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
- G09G3/36—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
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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
- G09G3/36—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
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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
- G09G3/36—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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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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
-
- 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
- G09G2310/0248—Precharge or discharge of column electrodes before or after applying exact column voltages
-
- 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0223—Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
- G09G2330/023—Power management, e.g. power saving using energy recovery or conservation
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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
- G09G3/36—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
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- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
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- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
【解決手段】本液晶表示装置は、複数のゲートラインと複数のデータラインとがそれぞれ交差し、液晶セルClcが複数配列された液晶セルアレイと、液晶セルアレイの一端側の外方に配置され、データラインにデータ電圧が充電される前に、データラインをプリチャージするための第1のチャージシェア回路106と、液晶セルアレイの他端側の外方に配置され、データラインにデータ電圧が充電される前に、データラインをプリチャージするための第2のチャージシェア回路105を備えることを特徴とする液晶表示装置。
【選択図】図8
Description
図1を参照すると、従来の液晶表示装置は、データライン(D1〜Dm)とゲートライン(G1〜Gn)とがそれぞれ交差し、その交差部に液晶セルClcを駆動するためのTFTが形成された液晶パネル14と、液晶パネル14のデータライン(D1〜Dm)にビデオ信号を供給するためのデータ駆動回路12と、液晶パネル14のゲートライン(G1〜Gn)にスキャンパルスを供給するためのゲート駆動回路13と、データ駆動回路12及びゲート駆動回路13を制御するためのタイミングコントローラ11とを備える。
図8を参照すると、本発明の実施の形態1による液晶表示装置は、ゲートライン(G1〜Gn)とデータライン(D1〜Dm)とがそれぞれ交差し、その交差部に液晶セルClcが複数配列された液晶セルアレイが形成された液晶パネル104と、ゲートラインにスキャンパルスを供給するためのゲート駆動回路103と、データラインにデータ電圧を供給するためのデータ駆動回路102と、データライン(D1〜Dm)をプリチャージするための第1及び第2のチャージシェア回路106、105と、データ駆動回路102、ゲート駆動回路103、第1及び第2のチャージシェア回路106、105を制御するためのタイミングコントローラ101とを備える。
ゲート駆動回路103は、スキャンパルスを順次発生するシフトレジスタと、スキャンパルスの電圧を液晶セルClcの駆動に適したレベルにシフトさせるためのレベルシフタなどで構成される。このゲート駆動回路103は、タイミングコントローラ101の制御下で、ゲートライン(G1〜Gn)に、ビデオ信号に同期するスキャンパルスを順次供給する。
以下、図9を参照して、第1及び第2のチャージシェア回路106、105によるチャージシェアリング過程について説明する。
図11は、本発明の第2の実施例による液晶表示装置を示す。
図11を参照すると、本発明の実施の形態2による液晶表示装置は、ゲートライン(G1〜Gn)とデータライン(D1〜Dm)とがそれぞれ交差し、その交差部に液晶セルClcが複数配列された液晶セルアレイが形成された液晶パネル204と、ゲートラインにスキャンパルスを供給するためのゲート駆動回路203と、データラインにデータ電圧を供給するためのデータ駆動回路202と、データライン(D1〜Dm)をプリチャージするための第1及び第2のチャージシェア回路206、205と、データ駆動回路202、ゲート駆動回路203、第1及び第2のチャージシェア回路206、205を制御するためのタイミングコントローラ201とを備える。
第1及び第2のチャージシェア回路206、205によるチャージシェアリング過程に関する説明は、上記実施の形態1と同様であるため、省略する。
Claims (11)
- 複数のゲートラインと複数のデータラインとがそれぞれ交差し、液晶セルが複数配列された液晶セルアレイと、
前記液晶セルアレイの一端側の外方に配置され、前記データラインにデータ電圧が充電される前に、前記データラインをプリチャージするための第1のチャージシェア回路と、
前記液晶セルアレイの他端側の外方に配置され、前記データラインにデータ電圧が充電される前に、前記データラインをプリチャージするための第2のチャージシェア回路と
を備えることを特徴とする液晶表示装置。 - 前記第1及び第2のチャージシェア回路は、ソース出力信号に応じて同時に動作されることを特徴とする請求項1に記載の液晶表示装置。
- 前記液晶セルアレイが形成された液晶パネルと、
前記データラインに前記データ電圧を供給するためのデータ駆動回路と、
前記ゲートラインにスキャンパルスを供給するためのゲート駆動回路と、
前記データ駆動回路、前記ゲート駆動回路、前記第1及び第2のチャージシェア回路を制御するためのタイミングコントローラと
をさらに備えることを特徴とする請求項2に記載の液晶表示装置。 - 前記第1及び第2のチャージシェア回路は、前記液晶パネルに形成されることを特徴とする請求項3に記載の液晶表示装置。
- 前記第1のチャージシェア回路は、前記液晶パネルに形成され、前記第2のチャージシェア回路は、前記データ駆動回路の内部に形成されることを特徴とする請求項3に記載の液晶表示装置。
- 前記第1のチャージシェア回路は、前記データ駆動回路の出力バッファの出力端に配置されることを特徴とする請求項5に記載の液晶表示装置。
- 複数のゲートラインと複数のデータラインとがそれぞれ交差し、液晶セルが複数配列された液晶セルアレイを備える液晶表示装置の駆動方法であって、前記液晶セルアレイの一端側及び他端側の外方で、前記データラインをプリチャージすることを特徴とする液晶表示装置の駆動方法。
- 前記プリチャージは、ソース出力信号により行われることを特徴とする請求項7に記載の液晶表示装置の駆動方法。
- 複数の液晶セルが配列された液晶セルアレイの一端側の外方に配置されると共に、前記液晶セルに連結され、ビデオ信号を供給するデータラインにデータ電圧が充電される前に、前記データラインをプリチャージするための第1のチャージシェア回路と、
前記液晶セルアレイの他端側の外方に配置され、前記データラインにデータ電圧が充電される前に、前記データラインをプリチャージするための第2のチャージシェア回路と
を備えることを特徴とするチャージシェア装置。 - 前記第1及び第2のチャージシェア回路は、ソース出力信号に応じて同時に動作されることを特徴とする請求項9に記載のチャージシェア装置。
- 前記第1及び第2のチャージシェア回路は、前記データラインに連結されたスイッチング素子を含み、前記スイッチング素子は、ソース出力信号に応じて同時に動作されることを特徴とする請求項9に記載のチャージシェア装置。
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KR1020050077302A KR20070023099A (ko) | 2005-08-23 | 2005-08-23 | 액정표시장치 및 그 구동방법 |
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US (1) | US7817126B2 (ja) |
JP (1) | JP2007058177A (ja) |
KR (1) | KR20070023099A (ja) |
CN (1) | CN100426063C (ja) |
DE (1) | DE102006027401B4 (ja) |
FR (1) | FR2890224B1 (ja) |
GB (1) | GB2429569B (ja) |
TW (1) | TWI373745B (ja) |
Cited By (4)
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JP2013231939A (ja) * | 2012-04-30 | 2013-11-14 | Lg Display Co Ltd | 液晶表示装置及びその駆動方法 |
US8803855B2 (en) | 2010-04-22 | 2014-08-12 | Samsung Display Co., Ltd. | Liquid crystal display, method of driving the same, and method of manufacturing the same |
US9099055B2 (en) | 2011-11-10 | 2015-08-04 | Samsung Electronics Co., Ltd. | Display driving device and display system with improved protection against electrostatic discharge |
US9158165B2 (en) | 2010-03-08 | 2015-10-13 | Samsung Display Co., Ltd. | Display device having plurality of charge share gate lines |
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US8358292B2 (en) | 2005-08-01 | 2013-01-22 | Sharp Kabushiki Kaisha | Display device, its drive circuit, and drive method |
US8115716B2 (en) | 2005-08-04 | 2012-02-14 | Sharp Kabushiki Kaisha | Liquid crystal display device and its drive method |
US8259046B2 (en) | 2006-07-14 | 2012-09-04 | Sharp Kabushiki Kaisha | Active matrix substrate and display device having the same |
WO2008015813A1 (fr) | 2006-08-02 | 2008-02-07 | Sharp Kabushiki Kaisha | Substrat à matrice active et dispositif d'affichage doté de celui-ci |
CN101467200B (zh) | 2006-09-28 | 2011-09-28 | 夏普株式会社 | 液晶显示装置及其驱动电路和驱动方法 |
CN101512628B (zh) | 2006-11-02 | 2012-06-13 | 夏普株式会社 | 有源矩阵基板及具备该有源矩阵基板的显示装置 |
KR100849214B1 (ko) * | 2007-01-16 | 2008-07-31 | 삼성전자주식회사 | 차지 쉐어시 전력 소모를 줄일 수 있는 데이터 드라이버장치 및 디스플레이 장치 |
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Also Published As
Publication number | Publication date |
---|---|
DE102006027401A1 (de) | 2007-03-15 |
TWI373745B (en) | 2012-10-01 |
GB0611586D0 (en) | 2006-07-19 |
FR2890224B1 (fr) | 2010-01-15 |
TW200709143A (en) | 2007-03-01 |
CN1920624A (zh) | 2007-02-28 |
GB2429569A (en) | 2007-02-28 |
DE102006027401B4 (de) | 2009-05-14 |
GB2429569B (en) | 2007-11-07 |
FR2890224A1 (fr) | 2007-03-02 |
US20070046613A1 (en) | 2007-03-01 |
US7817126B2 (en) | 2010-10-19 |
CN100426063C (zh) | 2008-10-15 |
KR20070023099A (ko) | 2007-02-28 |
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