JP2007078797A - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
- Publication number
- JP2007078797A JP2007078797A JP2005263552A JP2005263552A JP2007078797A JP 2007078797 A JP2007078797 A JP 2007078797A JP 2005263552 A JP2005263552 A JP 2005263552A JP 2005263552 A JP2005263552 A JP 2005263552A JP 2007078797 A JP2007078797 A JP 2007078797A
- Authority
- JP
- Japan
- Prior art keywords
- gradation
- liquid crystal
- crystal display
- voltage
- display device
- 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
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
-
- 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
- G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
-
- 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
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
-
- 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
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
Abstract
【解決手段】 液晶表示装置は、選択されたデータ線(D)を通じて階調に応じた電圧が供給されることにより所望の階調の表示を得る、赤緑青(RGB)の各色について設けられた液晶表示素子がマトリクス状に配設された液晶表示素子アレイ(10)と、3色分の全階調に応じたアナログ電圧を生成する階調電圧発生部(11、21、31)と、階調データ値と前記階調電圧発生部で発生された階調に応じた電圧との対応関係から、前記データ線の前記階調に応じた電圧を前記階調データ値に応じて前記データ線に送出する分配部(12,40)とを備える。
【選択図】 図3
Description
11、21、31 階調電圧発生部
12、40 分配部
13、42 アナログバッファ
41 スイッチマトリクス
43 スイッチ
Claims (8)
- 選択されたデータ線を通じて階調に応じた電圧が供給されることにより所望の階調の表示を得る、赤緑青(RGB)の各色について設けられた液晶表示素子がマトリクス状に配設された液晶表示素子アレイと、
3色分の全階調に応じたアナログ電圧を生成する階調電圧発生部と、
階調データ値と前記階調電圧発生部で発生された階調に応じた電圧との対応関係から、前記データ線の前記階調に応じた電圧を前記階調データ値に応じて前記データ線に送出する分配部と、
を備えた液晶表示装置。 - 前記階調電圧発生部は抵抗分圧回路であることを特徴とする請求項1に記載の液晶表示装置。
- 前記抵抗分圧回路は各色に備えられ、それぞれが各色で必要とされる階調数の電圧取り出しタップを有することを特徴とする請求項2に記載の液晶表示装置。
- 前記抵抗分圧回路は各色で必要とされる階調数の3倍の電圧取り出しタップを有する単一の回路であることを特徴とする請求項2に記載の液晶表示装置。
- 前記分配部は、RGBデータをデコードして各色の階調値アドレスを得るデコーダと、このデコーダにより指定される階調値アドレスに割り当てられた前記階調に応じた電圧をデータ線に選択的に送出する接続部とを備えたことを特徴とする請求項1ないし4のいずれかに記載の液晶表示装置。
- RGBの各色についての階調電圧発生部の電圧生成、この電圧の接続部による各色のデータ線への選択的接続は各色ごとに時分割制御されることを特徴とする請求項1ないし5のいずれかに記載の液晶表示装置。
- データ線の切換と、階調電圧発生部による階調電圧の取り出しと、分配部による前記データ線への前記階調電圧の供給とが同期して行われるものであることを特徴とする請求項1ないし6のいずれかに記載の液晶表示装置。
- 前記階調電圧発生部での階調電圧生成と、前記分配部におけるデータ線への供給が1つのデータ線選択期間内で各色について動作時間をずらして行われるものであることを特徴とする請求項1ないし7のいずれかに記載の液晶表示装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005263552A JP2007078797A (ja) | 2005-09-12 | 2005-09-12 | 液晶表示装置 |
US11/518,938 US20070057882A1 (en) | 2005-09-12 | 2006-09-12 | Liquid crystal display device |
CNA2006101537832A CN101017261A (zh) | 2005-09-12 | 2006-09-12 | 液晶显示装置 |
TW095133744A TWI348140B (en) | 2005-09-12 | 2006-09-12 | Liquid crystal display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005263552A JP2007078797A (ja) | 2005-09-12 | 2005-09-12 | 液晶表示装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2007078797A true JP2007078797A (ja) | 2007-03-29 |
Family
ID=37890472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005263552A Pending JP2007078797A (ja) | 2005-09-12 | 2005-09-12 | 液晶表示装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070057882A1 (ja) |
JP (1) | JP2007078797A (ja) |
CN (1) | CN101017261A (ja) |
TW (1) | TWI348140B (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009251616A (ja) * | 2008-04-10 | 2009-10-29 | Beijing Boe Optoelectronics Technology Co Ltd | 液晶ディスプレー駆動装置と駆動方法 |
JP2010107799A (ja) * | 2008-10-31 | 2010-05-13 | Kyocera Corp | 信号処理装置及び画像表示装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9601088B2 (en) * | 2014-08-25 | 2017-03-21 | Innolux Corporation | Display devices and driving circuit |
KR20220028637A (ko) * | 2020-08-31 | 2022-03-08 | 주식회사 엘엑스세미콘 | 소스 드라이버 및 이를 포함하는 디스플레이 장치 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002258813A (ja) * | 2001-03-05 | 2002-09-11 | Matsushita Electric Ind Co Ltd | 液晶駆動装置 |
JP2003076334A (ja) * | 2001-09-04 | 2003-03-14 | Toshiba Corp | 表示装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4783890B2 (ja) * | 2000-02-18 | 2011-09-28 | 株式会社 日立ディスプレイズ | 液晶表示装置 |
KR100616338B1 (ko) * | 2002-10-09 | 2006-08-29 | 미쓰비시덴키 가부시키가이샤 | 구동회로 및 화상표시장치 |
JP2004279482A (ja) * | 2003-03-12 | 2004-10-07 | Sharp Corp | 表示装置 |
-
2005
- 2005-09-12 JP JP2005263552A patent/JP2007078797A/ja active Pending
-
2006
- 2006-09-12 TW TW095133744A patent/TWI348140B/zh not_active IP Right Cessation
- 2006-09-12 US US11/518,938 patent/US20070057882A1/en not_active Abandoned
- 2006-09-12 CN CNA2006101537832A patent/CN101017261A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002258813A (ja) * | 2001-03-05 | 2002-09-11 | Matsushita Electric Ind Co Ltd | 液晶駆動装置 |
JP2003076334A (ja) * | 2001-09-04 | 2003-03-14 | Toshiba Corp | 表示装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009251616A (ja) * | 2008-04-10 | 2009-10-29 | Beijing Boe Optoelectronics Technology Co Ltd | 液晶ディスプレー駆動装置と駆動方法 |
US8982025B2 (en) | 2008-04-10 | 2015-03-17 | Beijing Boe Optoelectronics Technology Co., Ltd. | Device and a method for driving liquid crystal display |
JP2010107799A (ja) * | 2008-10-31 | 2010-05-13 | Kyocera Corp | 信号処理装置及び画像表示装置 |
Also Published As
Publication number | Publication date |
---|---|
CN101017261A (zh) | 2007-08-15 |
TW200713185A (en) | 2007-04-01 |
TWI348140B (en) | 2011-09-01 |
US20070057882A1 (en) | 2007-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7486303B2 (en) | Circuit for adjusting gray-scale voltages of a self-emitting display device | |
US6954191B1 (en) | Liquid crystal display device | |
US8854294B2 (en) | Circuitry for independent gamma adjustment points | |
US7511694B2 (en) | Source driver that generates from image data an interpolated output signal for use by a flat panel display and methods thereof | |
KR100621966B1 (ko) | 표시용 구동 회로 | |
CN110277059B (zh) | 驱动芯片及其控制方法、显示装置 | |
US20100033456A1 (en) | Display device and display method thereof | |
EP1640964B1 (en) | Matrix type display apparatus and method of driving the same | |
JP2009271499A (ja) | バックライト駆動回路及びその駆動方法 | |
US20090096819A1 (en) | Driving circuit apparatus | |
JP4099671B2 (ja) | フラットディスプレイ装置及びフラットディスプレイ装置の駆動方法 | |
JPWO2002056288A1 (ja) | カラー画像表示装置 | |
JP6578850B2 (ja) | 回路装置、電気光学装置及び電子機器 | |
US20060044231A1 (en) | Drive device and drive method of self light emitting display panel and electronic equipment equipped with the drive device | |
US20050017939A1 (en) | Display driver and image display method | |
JP3125711B2 (ja) | Ledディスプレイユニットとled定電流ドライバー回路 | |
JP2007078797A (ja) | 液晶表示装置 | |
US10902766B1 (en) | Apparatus for performing brightness enhancement in display module | |
WO2011065092A1 (ja) | 液晶表示装置、テレビジョン受像機、液晶表示装置の表示方法 | |
JP2009186800A (ja) | 表示装置および表示装置のフリッカ判定方法。 | |
US20070085791A1 (en) | Gray-scale method for a flat panel display | |
JP2001134234A (ja) | 表示装置とledディスプレイユニットの点灯方法 | |
JP2007241235A (ja) | 表示駆動装置 | |
JP4364742B2 (ja) | 表示駆動装置 | |
JP2021089402A (ja) | 表示ドライバ及び表示装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20070219 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080818 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110610 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110614 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20111202 |