JP4831657B2 - 液晶表示駆動用半導体集積回路 - Google Patents
液晶表示駆動用半導体集積回路 Download PDFInfo
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- JP4831657B2 JP4831657B2 JP2005145036A JP2005145036A JP4831657B2 JP 4831657 B2 JP4831657 B2 JP 4831657B2 JP 2005145036 A JP2005145036 A JP 2005145036A JP 2005145036 A JP2005145036 A JP 2005145036A JP 4831657 B2 JP4831657 B2 JP 4831657B2
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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
-
- 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
- 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
-
- 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
- G09G2310/0264—Details of driving circuits
- G09G2310/0289—Details of voltage level shifters arranged for use in a driving circuit
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Description
この発明の前記ならびにそのほかの目的と新規な特徴については、本明細書の記述および添附図面から明らかになるであろう。
すなわち、2つの電源電圧端子間に2つの出力トランジスタが直列に接続されてなる出力段を有する出力回路において、2つの出力トランジスタ間にさらに1または2以上のトランジスタを直列に接続して、出力トランジスタのドレイン・ソース間に印加される電圧を減少させる。これとともに、上記2つの電源電圧の中間の電位を用意し、出力トランジスタがオフ状態にされている間、該オフ状態の出力トランジスタの基体に上記中間の電位を印加させる電位設定用のスイッチ素子を設ける。
すなわち、本発明に従うと、高電位差の信号を出力する出力回路を有する半導体集積回路において、出力回路を低耐圧の素子で構成し高耐圧プロセスを使用せずに製造可能して低コスト化を達成するとともに、出力回路の動作速度を向上させ、消費電力を低減させることができるという効果がある。
図1は、本発明を適用した液晶表示駆動用半導体集積回路(液晶コントロールドライバIC)100と、このドライバICにより駆動される液晶パネル200とからなる液晶表示システムの概略構成を示したものである。図1に示されているように、この実施例の液晶コントロールドライバIC100により駆動される液晶パネル200は、パネル上の走査線を順次駆動するシフトレジスタなどからなるゲート信号発生回路(走査線駆動回路)210を備えている。
図2の液晶パネル200は、ガラス基板のような透明基板上に画像信号が印加される複数の信号線としてのソース線(ソース電極)SL1,SL2,SL3……と、所定の周期で順次選択駆動される複数の走査線としてのゲート線(ゲート電極)GL1,GL2,……が直交する方向に配置されてなる。ゲート線(ゲート電極)GL1,GL2,……は、ゲート信号発生回路210に接続され、いずれか1本のゲート線に選択レベルの駆動電圧が順次印加される。そして、ソース線SL1,SL2,SL3……とゲート線GL1,GL2,……との各交点に画素が配置されている。
110 ソースドライバ回路
120 ゲート信号バッファ
121 出力制御論理回路
122,123 電位設定手段
130 コモンドライバ回路
160 液晶駆動用電源回路
170 昇圧回路
180 制御レジスタ
190 コントローラ
200 TFT液晶パネル
210 ゲート信号発生回路(走査線駆動回路)
Claims (4)
- 液晶パネルの走査線に印加されるべき駆動信号を生成する走査線駆動回路を搭載した液晶パネルの上記走査線駆動回路に供給される信号を出力する出力回路を内蔵した液晶表示駆動用半導体集積回路であって、
上記出力回路は、第1の電源電圧が印加される第1の電源電圧端子と第2の電源電圧が印加される第2の電源電圧端子との間に直列に接続された複数のトランジスタを有する出力回路を備え、
上記複数のトランジスタのいずれかの接続ノードには、該接続ノードに接続されている2つのトランジスタが共にオフ状態にされているときに当該接続ノードの電位を上記第1の電源電圧の電位と上記第2の電源電圧の電位の間の電位に設定する電位設定手段が接続され、
上記複数のトランジスタは各々耐圧が上記第1の電源電圧と上記第2の電源電圧の電位差よりも小さく、
上記電位設定手段は、第1の導電型のトランジスタと第2の導電型のトランジスタが並列接続されたスイッチ回路であることを特徴とする液晶表示駆動用半導体集積回路。 - 上記直列に接続された複数のトランジスタは、第1の導電型の第1および第2トランジスタと第2の導電型の第3および第4トランジスタとからなり、
上記第1トランジスタと第2トランジスタとの接続ノードに第1の電位設定手段が接続され、上記第3トランジスタと第4トランジスタとの接続ノードに第2の電位設定手段が接続され、
上記第2トランジスタと第3トランジスタとの接続ノードは出力端子に接続されていることを特徴とする請求項1に記載の液晶表示駆動用半導体集積回路。 - 上記複数のトランジスタは、絶縁ゲート型電界効果トランジスタであり、
上記第1の電位設定手段は、上記第1トランジスタと第2トランジスタとの接続ノードおよび上記第2トランジスタの基体を、上記第1の電源電圧の電位と上記第2の電源電圧の電位の間の第1電位に設定し、
上記第2の電位設定手段は、上記第3トランジスタと第4トランジスタとの接続ノードおよび上記第3トランジスタの基体を、上記第1電位と上記第2の電源電圧の電位の間の第2電位に設定することを特徴とする請求項2に記載の液晶表示駆動用半導体集積回路。 - 上記複数のトランジスタは、第1の振幅の入力信号を該第1の振幅よりも大きな第2の振幅の信号に変換するレベル変換回路により変換された信号によってそれぞれ制御されるように構成されていることを特徴とする請求項1〜3のいずれかに記載の液晶表示駆動用半導体集積回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005145036A JP4831657B2 (ja) | 2005-05-18 | 2005-05-18 | 液晶表示駆動用半導体集積回路 |
TW095114909A TWI415083B (zh) | 2005-05-18 | 2006-04-26 | A semiconductor integrated circuit and a semiconductor integrated circuit for driving a liquid crystal display |
KR1020060044261A KR101227342B1 (ko) | 2005-05-18 | 2006-05-17 | 반도체집적회로 및 액정표시 구동용 반도체집적회로 |
US11/434,846 US7573456B2 (en) | 2005-05-18 | 2006-05-17 | Semiconductor integrated circuit device and liquid crystal display driving semiconductor integrated circuit device |
CN2006100844195A CN1866348B (zh) | 2005-05-18 | 2006-05-18 | 半导体集成电路以及液晶显示驱动用半导体集成电路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2005145036A JP4831657B2 (ja) | 2005-05-18 | 2005-05-18 | 液晶表示駆動用半導体集積回路 |
Publications (2)
Publication Number | Publication Date |
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JP2006323040A JP2006323040A (ja) | 2006-11-30 |
JP4831657B2 true JP4831657B2 (ja) | 2011-12-07 |
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JP2005145036A Active JP4831657B2 (ja) | 2005-05-18 | 2005-05-18 | 液晶表示駆動用半導体集積回路 |
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US (1) | US7573456B2 (ja) |
JP (1) | JP4831657B2 (ja) |
KR (1) | KR101227342B1 (ja) |
CN (1) | CN1866348B (ja) |
TW (1) | TWI415083B (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101117736B1 (ko) * | 2010-02-05 | 2012-02-27 | 삼성모바일디스플레이주식회사 | 디스플레이 장치 |
TWI484471B (zh) * | 2014-01-16 | 2015-05-11 | Sitronix Technology Corp | 閘極驅動器及其電路緩衝器 |
CN104795029B (zh) | 2014-01-16 | 2017-06-06 | 矽创电子股份有限公司 | 栅极驱动器及其电路缓冲器 |
TWI552142B (zh) * | 2015-03-20 | 2016-10-01 | 矽創電子股份有限公司 | 閘極驅動電路 |
CN105427818B (zh) * | 2015-12-15 | 2018-04-20 | 深圳市华星光电技术有限公司 | 栅极驱动电路及其阵列基板 |
KR101845907B1 (ko) * | 2016-02-26 | 2018-04-06 | 피에스아이 주식회사 | 초소형 led 모듈을 포함하는 디스플레이 장치 |
CN110010079B (zh) * | 2018-06-14 | 2020-10-23 | 友达光电股份有限公司 | 栅极驱动装置 |
JP2021129170A (ja) | 2020-02-12 | 2021-09-02 | ソニーセミコンダクタソリューションズ株式会社 | ドライバ回路および撮像装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US5457420A (en) * | 1993-03-26 | 1995-10-10 | Nec Corporation | Inverter circuit and level shifter circuit for providing a high voltage output |
JPH0815256B2 (ja) * | 1993-05-06 | 1996-02-14 | 日本電気株式会社 | インバータ回路 |
JPH0774616A (ja) * | 1993-07-06 | 1995-03-17 | Seiko Epson Corp | 信号電圧レベル変換回路及び出力バッファ回路 |
JP3552500B2 (ja) * | 1997-11-12 | 2004-08-11 | セイコーエプソン株式会社 | 論理振幅レベル変換回路,液晶装置及び電子機器 |
JP3412131B2 (ja) * | 1998-06-23 | 2003-06-03 | 株式会社日立製作所 | 液晶表示装置 |
JP3934551B2 (ja) * | 2000-12-07 | 2007-06-20 | 株式会社ルネサステクノロジ | 半導体集積回路、液晶駆動装置および液晶表示システム |
US6970162B2 (en) * | 2001-08-03 | 2005-11-29 | Canon Kabushiki Kaisha | Image display apparatus |
JP5259904B2 (ja) * | 2001-10-03 | 2013-08-07 | ゴールドチャームリミテッド | 表示装置 |
JP4036081B2 (ja) | 2002-11-12 | 2008-01-23 | セイコーエプソン株式会社 | 電気光学パネル及びその製造方法 |
JP4484729B2 (ja) * | 2004-03-16 | 2010-06-16 | パナソニック株式会社 | 駆動電圧生成装置および駆動電圧生成装置の制御方法 |
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- 2005-05-18 JP JP2005145036A patent/JP4831657B2/ja active Active
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2006
- 2006-04-26 TW TW095114909A patent/TWI415083B/zh not_active IP Right Cessation
- 2006-05-17 US US11/434,846 patent/US7573456B2/en active Active
- 2006-05-17 KR KR1020060044261A patent/KR101227342B1/ko active IP Right Grant
- 2006-05-18 CN CN2006100844195A patent/CN1866348B/zh active Active
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Publication number | Publication date |
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JP2006323040A (ja) | 2006-11-30 |
US7573456B2 (en) | 2009-08-11 |
TWI415083B (zh) | 2013-11-11 |
KR20060119803A (ko) | 2006-11-24 |
TW200703197A (en) | 2007-01-16 |
KR101227342B1 (ko) | 2013-01-28 |
US20060262068A1 (en) | 2006-11-23 |
CN1866348A (zh) | 2006-11-22 |
CN1866348B (zh) | 2010-08-18 |
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