JP2010231205A - 共通電極駆動回路と液晶ディスプレイ - Google Patents
共通電極駆動回路と液晶ディスプレイ Download PDFInfo
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- 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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- 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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- 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
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- G09G2300/0426—Layout of electrodes and connections
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- 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
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- G09G2320/02—Improving the quality of display appearance
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Abstract
【解決手段】液晶ディスプレーの共通電極駆動回路1は、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15,16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11,12を備え、該共通電極層が液晶ディスプレーの画素電極と一緒に液晶を駆動するものであり、入力した前記共通電圧が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小さくなる。また、上述共通電極駆動回路を備える液晶ディスプレーを更に提供する。
【選択図】図4
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 (12)
- 液晶ディスプレイに用いる共通電極駆動回路であって、
前記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、
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、
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するものである。 - 請求項1に記載の共通電極駆動回路において、
前記複数の出力端は、
共通電極層におけると共にデータライン信号入力初端に隣接する複数の第1の共通電圧入力端に接続し、前記複数の第1の共通電極入力端に第1の共通電圧を印加する第1の出力端と、
共通電極層におけると共にデータライン信号入力終端に隣接する第2の共通電圧入力端に接続し、前記第2の共通電極入力端に第2の共通電圧を印加する第2の出力端と、を更に備え、
前記複数の第1の共通電圧入力端は、前記共通電極層のデータライン信号入力初端に隣接する側に分散に形成され、
前記複数の第2の共通電圧入力端は、前記共通電極層のデータライン信号入力終端に隣接する側に分散に形成され、
前記第2の共通電圧が前記第1の共通電圧より小さい。 - 請求項1に記載の共通電極駆動回路において、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する。
- 請求項3に記載の共通電極駆動回路において、
前記複数の出力端は、
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の共通電極入力端に第1の共通電圧を印加する第1の出力端と、
共通電極層におけると共にデータライン信号入力終端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の共通電極入力端に第2の共通電圧を印加する第2の出力端と、を更に備え、
前記第2の共通電圧が前記第1の共通電圧より小さい。 - 請求項4に記載の共通電極駆動回路において、
前記複数の出力端は、
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の共通電極入力端に第3の共通電圧を印加する第3の出力端と、
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の共通電極入力端に第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。 - 請求項2に記載の共通電極駆動回路において、前記第1の共通電圧入力端と第2の共通電圧入力端とのいずれかは、演算増幅器を介して対応する出力端に接続されている。
- 請求項4に記載の共通電極駆動回路において、前記第3の共通電圧入力端と第4の共通電圧入力端とのいずれかは、演算増幅器を介して対応する出力端に接続されている。
- 請求項5に記載の共通電極駆動回路において、前記第3の共通電圧入力端、第4の共通電圧入力端、第5の共通電圧入力端と第6の共通電圧入力端いずれかは、演算増幅器を介して対応する出力端に接続されている。
- 液晶ディスプレイであって、
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、
前記ゲートラインにゲート電極開閉信号を出力し、前記ゲートラインの片側に設置されて各ゲートラインに接続し、ゲート電極開閉信号を入力するゲート電極駆動器と、
前記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ゲートライン、データラインと、複数の画素電極と、を有する。 - 請求項9に記載の液晶ディスプレイにおいて、
前記共通電極駆動回路において、入力した前記共通電圧が更に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する。 - 請求項9に記載の液晶ディスプレイにおいて、
前記ゲートラインの他側に設置される他方のゲート電極駆動器を更に備え、
各ゲートラインが前記ゲート電極駆動器と前記他方のゲート電極駆動器に同時に連続される。 - 請求項9に記載の液晶ディスプレイにおいて、
前記ゲートラインの他側にそれぞれスイッチによって各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、該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、該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共通電極層に接続する。
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CN200910080700.5 | 2009-03-25 | ||
CN2009100807005A CN101847376B (zh) | 2009-03-25 | 2009-03-25 | 公共电极驱动电路和液晶显示器 |
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JP2010231205A5 JP2010231205A5 (ja) | 2013-03-14 |
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KR101233710B1 (ko) | 2013-02-18 |
KR101154491B1 (ko) | 2012-07-03 |
US20100245326A1 (en) | 2010-09-30 |
JP5727153B2 (ja) | 2015-06-03 |
CN101847376B (zh) | 2013-10-30 |
KR20100107422A (ko) | 2010-10-05 |
CN101847376A (zh) | 2010-09-29 |
US8878829B2 (en) | 2014-11-04 |
KR20120031197A (ko) | 2012-03-30 |
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