JP2008026636A - 駆動回路 - Google Patents
駆動回路 Download PDFInfo
- Publication number
- JP2008026636A JP2008026636A JP2006199626A JP2006199626A JP2008026636A JP 2008026636 A JP2008026636 A JP 2008026636A JP 2006199626 A JP2006199626 A JP 2006199626A JP 2006199626 A JP2006199626 A JP 2006199626A JP 2008026636 A JP2008026636 A JP 2008026636A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- output
- switch
- amplifier
- trb
- 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.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 description 12
- 230000003071 parasitic effect Effects 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 4
- 210000002858 crystal cell Anatomy 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000001934 delay Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
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
- G09G3/3685—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
- G09G2310/0264—Details of driving circuits
- G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
Abstract
【解決手段】画素セルを選択する複数のデコーダにそれぞれ接続される出力アンプは、差動増幅回路の一方の入力端を形成するトランジスタ(TrA) 100とトランジスタ100よりもサイズが大きいトランジスタ(TrB)とのゲートがスイッチ106により入力データの切り替わり時に接続または切断され、他方の入力端を形成するトランジスタ(TrC) 110とトランジスタ110よりもサイズが大きいトランジスタ(TrD)のドレインがスイッチ114により入力データの切り替わり時にて接続または切断され、さらにスイッチ108は出力アンプの出力をトランジスタ(TrB) 104に接続してこの出力によってゲートを充放電する。
【選択図】図1
Description
16 デコーダ(#1〜#n)
26 出力アンプ(#1〜#n)
22 ガンマ補正抵抗
24 抵抗アレイ
Claims (2)
- 複数の画素セルが配列された表示装置を駆動する駆動回路において、該回路は、
入力データとガンマ補正電圧とに基づいて、画素セルを選択する複数のデコーダと、
該複数のデコーダにそれぞれ接続され、該複数のデコーダの出力をそれぞれ増幅する複数の出力アンプとを含み、
該複数の出力アンプは、それぞれ、差動増幅回路の一方の入力端を形成する第1のサイズの第1のトランジスタと、
前記第1のサイズよりも大きい第2のサイズの第2のトランジスタと、
前記第2のトランジスタを前記第1のトランジスタに接続または切断する第1のスイッチと、
該出力アンプの出力を前記第2のトランジスタに接続または切断する第2のスイッチとを含み、
前記入力データが切り替わると、前記第1のスイッチは、前記第2のトランジスタを前記第1のトランジスタから切断することを特徴とする駆動回路。 - 請求項1に記載の回路において、前記入力データが切り替わると、前記第2のスイッチは、前記出力アンプの出力を前記第2のトランジスタに接続して該第2のトランジスタを充放電することを特徴とする駆動回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006199626A JP2008026636A (ja) | 2006-07-21 | 2006-07-21 | 駆動回路 |
US11/826,557 US20080018574A1 (en) | 2006-07-21 | 2007-07-17 | Drive circuit having plural output amplifiers for driving display cells with delay minimized |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006199626A JP2008026636A (ja) | 2006-07-21 | 2006-07-21 | 駆動回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2008026636A true JP2008026636A (ja) | 2008-02-07 |
Family
ID=38970959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006199626A Pending JP2008026636A (ja) | 2006-07-21 | 2006-07-21 | 駆動回路 |
Country Status (2)
Country | Link |
---|---|
US (1) | US20080018574A1 (ja) |
JP (1) | JP2008026636A (ja) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3700558B2 (ja) * | 2000-08-10 | 2005-09-28 | 日本電気株式会社 | 駆動回路 |
JP3998465B2 (ja) * | 2001-11-30 | 2007-10-24 | 富士通株式会社 | ボルテージホロワ及びそのオフセットキャンセル回路並びに液晶表示装置及びそのデータドライバ |
JPWO2004047067A1 (ja) * | 2002-11-20 | 2006-03-23 | 三菱電機株式会社 | 画像表示装置 |
JP3776890B2 (ja) * | 2003-02-12 | 2006-05-17 | 日本電気株式会社 | 表示装置の駆動回路 |
JP4143588B2 (ja) * | 2003-10-27 | 2008-09-03 | 日本電気株式会社 | 出力回路及びデジタルアナログ回路並びに表示装置 |
JP4328596B2 (ja) * | 2003-10-27 | 2009-09-09 | 日本電気株式会社 | 差動増幅器 |
JP4241466B2 (ja) * | 2004-03-29 | 2009-03-18 | 日本電気株式会社 | 差動増幅器とデジタル・アナログ変換器並びに表示装置 |
TWI310926B (en) * | 2005-01-24 | 2009-06-11 | Himax Tech Inc | Source driver and source driving method |
-
2006
- 2006-07-21 JP JP2006199626A patent/JP2008026636A/ja active Pending
-
2007
- 2007-07-17 US US11/826,557 patent/US20080018574A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20080018574A1 (en) | 2008-01-24 |
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