JP5727153B2 - 共通電極駆動回路と液晶ディスプレー - Google Patents
共通電極駆動回路と液晶ディスプレー Download PDFInfo
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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
- G09G3/3648—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
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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
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—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
- 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
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan 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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
-
- 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
- G09G2310/0264—Details of driving circuits
- G09G2310/0281—Arrangement of scan or data electrode driver circuits at the periphery of a panel not inherent to a split matrix structure
-
- 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
- G09G2310/066—Waveforms comprising a gently increasing or decreasing portion, e.g. ramp
-
- 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
- G09G2320/0219—Reducing feedthrough effects in active matrix panels, i.e. voltage changes on the scan electrode influencing the pixel voltage due to capacitive coupling
-
- 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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
ΔV=ΔV1−ΔV2+ΔV3
ただし、ΔV1=Cgd*(Von−Von1)/(Cgd+Cst+Clc)
ΔV2=ΔV1(1−exp(−t/(R(Cst+Clc+Cgd))))
ΔV3=Cgd*(Von1−Voff)/(Cgd+Cst+Clc)
上述式から分かるように、ゲートラインの抵抗容量(R・C)特性はゲート初端のΔV1とΔV3を終端のΔV1とΔV3より大きくする。それによって、ゲートラインの初端から終端へのキックバック電圧ΔVが変化している。
2 液晶パネル
3 ゲート電極駆動器
4 データ駆動器
5 第1の薄膜トランジスタ
6 第2の薄膜トランジスタ
11 第1の出力端
12 第2の出力端
13 第3の出力端
14 第4の出力端
15 第1端
16 第2端
17 ゲート電極導通電圧入力ライン
18 ゲート電極オフ電圧入力ライン
19 共通電極層
20 ゲート電極導通電圧発生器
21 ゲート電極オフ電圧発生器
22 アレイ基板
23 カラーフィルム基板
24 液晶層
Claims (4)
- 液晶ディスプレーの共通電極層の複数の共通電圧入力端に接続し、前記複数の共通電圧入力端に共通電圧を入力する複数の出力端を備え、前記共通電極層が前記液晶ディスプレーの画素電極と一緒に液晶を駆動し、
各画素における共通電圧差を各点のキックバック電圧の差と一致させるように、入力した前記共通電圧が前記液晶ディスプレーのデータライン信号入力初端からデータライン信号入力終端へと次第に減少し、
入力した前記共通電圧がゲートライン開閉信号入力初端からゲートライン開閉信号入力終端へと次第に増大し、
前記複数の出力端は、
前記共通電極層におけると共にデータライン信号入力初端とゲートライン開閉信号入力終端との交差点に隣接する第3の共通電圧入力端に接続し、前記第3の共通電圧入力端に第1の共通電圧を印加する第1の出力端と、
前記共通電極層におけると共にデータライン信号入力終端とゲートライン開閉信号入力初端との交差点に隣接する第4の共通電圧入力端に接続し、前記第4の共通電圧入力端に第2の共通電圧を印加し、且つ、前記第2の共通電圧が前記第1の共通電圧より小さい第2の出力端と、
前記共通電極層におけると共にデータライン信号入力初端とゲートライン開閉信号入力初端との交差点に隣接する第5の共通電圧入力端に接続し、前記第5の共通電圧入力端に第3の共通電圧を印加する第3の出力端と、
前記共通電極層におけると共にデータライン信号入力終端とゲートライン開閉信号入力終端との交差点に隣接する第6の共通電圧入力端に接続し、前記第6の共通電圧入力端に第4の共通電圧を印加する第4の出力端と、を更に備え、
前記第3の共通電圧と前記第4の共通電圧とがそれぞれ前記第2の共通電圧より大きく、且つそれぞれ前記第1の共通電圧より小さく、前記第3の共通電圧が前記第4の共通電圧より小さい、ことを特徴とする液晶ディスプレーに用いる共通電極駆動回路。 - 前記第1の出力端と前記第3の共通電圧入力端との間、または、前記第2の出力端と前記第4の共通電圧入力端との間との少なくとも一方に、演算増幅器が接続されている、ことを特徴とする請求項1に記載の共通電極駆動回路。
- 前記第1の出力端と前記第3の共通電圧入力端との間、前記第2の出力端と前記第4の共通電圧入力端との間、前記第3の出力端と前記第5の共通電圧入力端との間、および、前記第4の出力端と前記第6の共通電圧入力端との間の少なくとも一方に、演算増幅器が接続されている、ことを特徴とする請求項1に記載の共通電極駆動回路。
- 対向して配置されたアレイ基板とカラーフィルム基板とを備え、その中に液晶層が充填される液晶パネルと、
ゲートラインにゲートライン開閉信号を出力し、前記ゲートラインの片側に設置されて各前記ゲートラインに接続し、ゲートライン開閉信号を入力するゲート電極駆動器と、
データラインにデータ信号を出力するデータ駆動器と、
請求項1に記載の共通電極駆動回路と、を備え、
前記アレイ基板が第1の基板と、前記第1の基板に従横交差に形成された複数の前記ゲートライン、前記データラインと、複数の前記画素電極と、を有し
前記ゲートラインの他側にそれぞれ第1、第2薄膜トランジスタによって各前記ゲートラインに接続するゲート電極導通電圧入力線とゲート電極オフ電圧入力線とが更に設置され、
前記ゲート電極駆動器が前記ゲートラインの一端からゲート電極導通電圧を入力するとき、前記ゲート電極導通電圧入力線をオンにさせ、前記ゲートラインの他端からゲート電極導通電圧を同時に入力し、前記ゲート電極駆動器が前記ゲートラインの一端からゲート電極オフ電圧を入力するとき、前記ゲート電極オフ電圧入力線をオンにさせ、前記ゲートラインの他端からゲート電極オフ電圧を同時に入力し、前記共通電極駆動回路が前記液晶ディスプレーにおける前記共通電極層に接続し、前記第1薄膜トランジスタのゲート電極とドレイン電極が基板の他側で対応する前記ゲートラインと直接接続する、ことを特徴とする液晶ディスプレー。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN2009100807005A CN101847376B (zh) | 2009-03-25 | 2009-03-25 | 公共电极驱动电路和液晶显示器 |
CN200910080700.5 | 2009-03-25 |
Publications (3)
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JP2010231205A JP2010231205A (ja) | 2010-10-14 |
JP2010231205A5 JP2010231205A5 (ja) | 2013-03-14 |
JP5727153B2 true JP5727153B2 (ja) | 2015-06-03 |
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US (1) | US8878829B2 (ja) |
JP (1) | JP5727153B2 (ja) |
KR (2) | KR101154491B1 (ja) |
CN (1) | CN101847376B (ja) |
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TWI354968B (en) * | 2006-11-17 | 2011-12-21 | Chunghwa Picture Tubes Ltd | Liquid crystal display and display panel thereof |
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2009
- 2009-03-25 CN CN2009100807005A patent/CN101847376B/zh active Active
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2010
- 2010-03-24 US US12/730,373 patent/US8878829B2/en active Active
- 2010-03-25 KR KR1020100026697A patent/KR101154491B1/ko active IP Right Grant
- 2010-03-25 JP JP2010070127A patent/JP5727153B2/ja active Active
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KR101154491B1 (ko) | 2012-07-03 |
KR101233710B1 (ko) | 2013-02-18 |
KR20120031197A (ko) | 2012-03-30 |
CN101847376B (zh) | 2013-10-30 |
CN101847376A (zh) | 2010-09-29 |
US20100245326A1 (en) | 2010-09-30 |
US8878829B2 (en) | 2014-11-04 |
KR20100107422A (ko) | 2010-10-05 |
JP2010231205A (ja) | 2010-10-14 |
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