JP4929315B2 - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
- Publication number
- JP4929315B2 JP4929315B2 JP2009162326A JP2009162326A JP4929315B2 JP 4929315 B2 JP4929315 B2 JP 4929315B2 JP 2009162326 A JP2009162326 A JP 2009162326A JP 2009162326 A JP2009162326 A JP 2009162326A JP 4929315 B2 JP4929315 B2 JP 4929315B2
- Authority
- JP
- Japan
- Prior art keywords
- data
- image data
- liquid crystal
- color
- gamma curve
- 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.)
- Expired - Fee Related
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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
-
- 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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
-
- 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
- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2044—Display of intermediate tones using dithering
- G09G3/2051—Display of intermediate tones using dithering with use of a spatial dither pattern
- G09G3/2055—Display of intermediate tones using dithering with use of a spatial dither pattern the pattern being varied in time
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
- Processing Of Color Television Signals (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Description
図6に示すとおり、R、G、B各々の曲線が一致せず、また、その間隔も一定ではないことがわかる。すなわち、暗い階調レベルになるにつれて、G成分やR成分はゼロに近く、B成分のみがゼロより大きな輝度レベルを示しているため、図3に示す通り、観察者の目にはとても青く(Bluish)見られるという問題が生じる。
一般に階調の色温度は各R、G、Bの色座標と輝度(luminance)によって決められる。従って測定されたガンマ曲線に対してR、G、B別に曲線を変動させると階調が変わってもホワイトグレーの色座標は大きな変動がない、つまり、色温度が変わらない特性を得ることができる。
図7は本発明の一実施例による色補正機能を有する液晶表示装置を説明するための図面である。
図18は本発明の第2実施例による色補正部を説明するための図面であって、特に、内部ROMに拡張データを保存する回路構成の概念図である。
図19は本発明の第3実施例による色補正部を説明するための図面であって、特に、従来のデジタルロジックを使用してデータを保存する場合である。
100 タイミング制御部
110 色補正部
112、114、116 データ補正部
122、124、126 多階調化部
130 ROM制御器
132、134、136 揮発性メモリ
142、144、146 ROM
152、154、156 ロジック
200 データドライバー
300 スキャンドライバー
400 LCDパネル
Claims (3)
- 青色である第1の色及び赤色もしくは緑色である第2の色をそれぞれ示す第1ガンマ曲線及び第2ガンマ曲線を有する液晶表示装置であり、
画像を表示する液晶表示パネルと、
色補正部と、を有し、
前記色補正部は、第1の階調値を有する前記第1の色の第1入力画像データを、第2の階調値を有する前記第1の色の第1出力画像データに変換し、
前記第1出力画像データのルミネッセンス値は、前記第1入力画像データに関して仮想ガンマ曲線のルミネッセンス値と同じであり、
前記仮想ガンマ曲線は、前記第1ガンマ曲線と前記第2ガンマ曲線との間のルミネッセンス値を有している、液晶表示装置。 - 前記第1ガンマ曲線と前記第2ガンマ曲線とは、前記第1入力画像データに関して異なるルミネッセンス値を有している、請求項1に記載の液晶表示装置。
- 前記第2の色は緑である、請求項1に記載の液晶表示装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2001-41186 | 2001-07-10 | ||
KR1020010041186A KR100750929B1 (ko) | 2001-07-10 | 2001-07-10 | 색 보정 기능을 갖는 액정 표시 장치 및 이의 구동 장치및 그 방법 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008278396A Division JP4923021B2 (ja) | 2001-07-10 | 2008-10-29 | 色補正機能を有する液晶表示装置並びにその駆動装置及び駆動方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009230157A JP2009230157A (ja) | 2009-10-08 |
JP4929315B2 true JP4929315B2 (ja) | 2012-05-09 |
Family
ID=19711989
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001312508A Pending JP2003029724A (ja) | 2001-07-10 | 2001-10-10 | 色補正機能を有する液晶表示装置並びにその駆動装置及び駆動方法 |
JP2008278396A Expired - Fee Related JP4923021B2 (ja) | 2001-07-10 | 2008-10-29 | 色補正機能を有する液晶表示装置並びにその駆動装置及び駆動方法 |
JP2009162326A Expired - Fee Related JP4929315B2 (ja) | 2001-07-10 | 2009-07-09 | 液晶表示装置 |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001312508A Pending JP2003029724A (ja) | 2001-07-10 | 2001-10-10 | 色補正機能を有する液晶表示装置並びにその駆動装置及び駆動方法 |
JP2008278396A Expired - Fee Related JP4923021B2 (ja) | 2001-07-10 | 2008-10-29 | 色補正機能を有する液晶表示装置並びにその駆動装置及び駆動方法 |
Country Status (6)
Country | Link |
---|---|
US (3) | US7030846B2 (ja) |
JP (3) | JP2003029724A (ja) |
KR (1) | KR100750929B1 (ja) |
CN (1) | CN1290074C (ja) |
TW (1) | TWI288856B (ja) |
WO (1) | WO2003007287A1 (ja) |
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US7030846B2 (en) | 2006-04-18 |
JP2003029724A (ja) | 2003-01-31 |
US20100309234A1 (en) | 2010-12-09 |
CN1290074C (zh) | 2006-12-13 |
CN1395229A (zh) | 2003-02-05 |
US20060007089A1 (en) | 2006-01-12 |
TWI288856B (en) | 2007-10-21 |
US20030016199A1 (en) | 2003-01-23 |
KR20030005748A (ko) | 2003-01-23 |
US7746304B2 (en) | 2010-06-29 |
JP2009230157A (ja) | 2009-10-08 |
JP2009064031A (ja) | 2009-03-26 |
KR100750929B1 (ko) | 2007-08-22 |
US8823618B2 (en) | 2014-09-02 |
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