JP2008176329A - 液晶表示装置のビデオデータ修正装置および方法 - Google Patents
液晶表示装置のビデオデータ修正装置および方法 Download PDFInfo
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- JP2008176329A JP2008176329A JP2008008749A JP2008008749A JP2008176329A JP 2008176329 A JP2008176329 A JP 2008176329A JP 2008008749 A JP2008008749 A JP 2008008749A JP 2008008749 A JP2008008749 A JP 2008008749A JP 2008176329 A JP2008176329 A JP 2008176329A
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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
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
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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
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- 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
-
- 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
-
- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0606—Manual adjustment
-
- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Liquid Crystal (AREA)
Abstract
液晶表示装置の表示品質を高めるようにした液晶表示装置のビデオデータ修正装置及び方法の提供。
【解決手段】
液晶表示装置のビデオデータ修正方法は、入力映像の色温度の特性を修正するための修正データが前記入力映像のグレーレベル値に対応して設定されるルックアップテーブルを設けて、入力映像のグレーレベル値に応じたルックアップテーブルをアクセスして入力映像のグレーレベル値に対応する色温度修正のデータを取り出して、これを利用してデータラインアドを駆動する。
【選択図】図16
Description
2、122、162:制御部
3、83、123、143、163:列ドライバ
5、85、125、144、165:行ドライバ
6、86、126、145、166:液晶パネル
21:第1ラッチ
22:第2ラッチ
23、42:デジタルーアナログ変換器
24、97、136、156:出力バッファ
4、84、164:ガンマ電圧の発生部
41:基準電圧の生成部
42、94:バッファ部
43、95:ガンマ電圧の出力部
44、99、134、154:データ入力部
45、98、135、155:デコーダ
91:ガンマ制御部
92:メモリ部
93、132:多チャンネルDAC部
100:使用者のインターペース
101:データ受信部
102:基準電圧の発生部
124:メモリ/ガンマ制御部
142:タイミング/ガンマ制御部
167:ルックアップテーブルドライバ
171:メモリ制御器
172:メモリ
Claims (7)
- データラインとゲートラインの交差部に液晶画素が配置される液晶パネルを具備する液晶表示装置の駆動装置において、
入力映像の色温度の特性を修正するための色温度の修正データが前記入力映像のグレーレベル値に対応して設定されるルックアップテーブルが格納されたメモリ手段と、
前記入力映像のグレーレベル値につれて前記メモリ手段のルックアップテーブルをアクセスして前記入力映像のグレーレベル値に対応する色温度修正のデータを取り出すためのメモリ制御手段と、
前記メモリ制御手段からの色温度の修正データを利用して前記データラインを駆動するためのデータ駆動手段とを具備することを特徴とする液晶表示装置のビデオデータ修正装置。 - 前記ゲートラインにスキャンパルスを順次供給して前記ゲートラインアドを駆動するための行ドライバと、
前記メモリ制御手段と行ドライバに必要なタイミング制御信号を供給するためのタイミングコントローラとをさらに具備するゲートラインにスキャンパルスを順次供給して前記ゲートラインアドを駆動するための行ドライバと、
前記メモリ制御手段と行ドライバに必要なタイミング制御信号を供給するためのタイミングコントローラとをさらに具備することを特徴とする請求項1記載の液晶表示装置のビデオデータ修正装置。 - 前記色温度の修正データは前記液晶表示装置の表示映像の色温度が凡そ6500Kを維持するように入力映像を調整した後に測定されるデータであることを特徴とする請求項1記載の液晶表示装置のビデオデータ修正装置。
- 前記色温度の修正データによって修正されたデータが表示される前記液晶表示装置の表示映像はその輝度とコントラスト比が前記入力映像の輝度とコントラストを維持することを特徴とする請求項1記載の液晶表示装置のビデオデータ修正装置。
- データラインとゲートラインの交差部に液晶画素が配置される液晶パネルを具備する液晶表示装置の駆動方法において、
入力映像の色温度の特性を修正するための色温度の修正データが前記入力映像のグレーレベル値に対応して設定されるルックアップテーブルを設ける段階と、
前記入力映像のグレーレベル値につれて前記ルックアップテーブルをアクセスして前記入力映像のグレーレベル値に対応する色温度修正のデータを取り出す段階と、
前記色温度の修正データを利用して前記データラインを駆動する段階を含むことを特徴とする液晶表示装置のビデオデータ修正方法。 - 前記色温度の修正データは前記液晶表示装置の表示映像の色が凡そ6500Kを維持するように入力映像を調整した後に測定されるデータであることを特徴とする請求項5記載の液晶表示装置のビデオデータ修正装置。
- 前記色温度の修正データによって修正されたデータが表示される前記液晶表示装置の表示映像はその輝度とコントラスト比が前記入力映像の輝度とコントラストを維持することを特徴とする請求項5記載の液晶表示装置のビデオデータ修正方法。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000036213A KR100682357B1 (ko) | 2000-06-28 | 2000-06-28 | 액정표시장치의 감마전압 자동조정장치 및 그의 구동방법 |
| KR1020000085270A KR100760932B1 (ko) | 2000-12-29 | 2000-12-29 | 액정표시장치 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2001197553A Division JP4201070B2 (ja) | 2000-06-28 | 2001-06-28 | 液晶表示装置のガンマ電圧の修正装置および方法 |
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| Publication Number | Publication Date |
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| JP2008176329A true JP2008176329A (ja) | 2008-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2001197553A Expired - Lifetime JP4201070B2 (ja) | 2000-06-28 | 2001-06-28 | 液晶表示装置のガンマ電圧の修正装置および方法 |
| JP2008008749A Pending JP2008176329A (ja) | 2000-06-28 | 2008-01-18 | 液晶表示装置のビデオデータ修正装置および方法 |
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| JP2001197553A Expired - Lifetime JP4201070B2 (ja) | 2000-06-28 | 2001-06-28 | 液晶表示装置のガンマ電圧の修正装置および方法 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US7298352B2 (ja) |
| JP (2) | JP4201070B2 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4201070B2 (ja) | 2008-12-24 |
| US7298352B2 (en) | 2007-11-20 |
| JP2002123232A (ja) | 2002-04-26 |
| US20020063666A1 (en) | 2002-05-30 |
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