KR20020093798A - 표시 장치에서 균일한 밝기를 달성하는 방법 및 장치 - Google Patents
표시 장치에서 균일한 밝기를 달성하는 방법 및 장치 Download PDFInfo
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- KR20020093798A KR20020093798A KR1020027009753A KR20027009753A KR20020093798A KR 20020093798 A KR20020093798 A KR 20020093798A KR 1020027009753 A KR1020027009753 A KR 1020027009753A KR 20027009753 A KR20027009753 A KR 20027009753A KR 20020093798 A KR20020093798 A KR 20020093798A
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- 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
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- 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
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- Nonlinear Science (AREA)
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- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract
Description
Claims (17)
- 표시 장치에서 균일한 밝기를 달성하기 위한 방법으로서,액정 표시 장치의 액정(LC) 갭 치수를 결정하는 단계와;상기 LC 갭 치수에 기초해서 가변의 전압 전달 함수를 표시 장치 구동기에 제공하는 단계를 포함하는 균일한 밝기 달성 방법.
- 제1항에 있어서, 상기 가변의 전압 전달 함수 제공 단계는 프로그램 가능한 매트릭스의 값에 따라 상기 전달 함수를 변조하는 단계를 더 포함하는 것인 균일한 밝기 달성 방법.
- 제2항에 있어서, 상기 변조 단계는 적어도 하나의 디지털-아날로그 컨버터의 기준 전압을, 원하는 아날로그 파형으로 변조하는 단계를 포함하는 것인 균일한 밝기 달성 방법.
- 제2항에 있어서, 상기 전달 함수 제공 단계는 상기 LC 갭 치수 변화가, 상기 프로그램 가능한 매트릭스의 값에 대한 나이퀴스트 기준을 공간 주파수가 초과하지 않는 완만하고 연속적인 함수이기만 하면 유효한 것인 균일한 밝기 달성 방법.
- 제3항에 있어서, 상기 방법은 제1의 디지털-아날로그 컨버터의 백색 레벨을설정하고, 제2 디지털-아날로그 컨버터를 이용하여 상기 액정에 가변 구동을 설정하는 단계를 더 포함하는 것인 균일한 밝기 달성 방법.
- 제5항에 있어서, 상기 방법은 임의의 비선형성 전달 함수를 보정하여 상기 제2 디지털-아날로그 컨버터에 상기 보정된 전달 함수를 제공하기 전에 상기 보정된 전달 함수를 제공하도록 룩업 테이블로부터 프로그램 가능한 매트릭스의 값을 제공하는 단계를 더 포함하는 것인 균일한 밝기 달성 방법.
- 제1항에 있어서, 상기 방법은 상기 액정상에서 DC 바이어스를 피하도록 프레임 사이에서 구동 전압을 반전시키는 단계를 더 포함하는 것인 균일한 밝기 달성 방법.
- 액정 표시 장치 셀용 표시 장치 구동기로서,상기 액정 표시 장치 셀에 표시하기 위한 화상 정보를 포함하는 입력 신호원과;상기 액정 표시 장치 셀에 관련된 밝기 불균일성을 나타내는 제1 보정 신호원과;상기 입력 신호 및 상기 제1 보정 신호에 응답하여 상기 제1 보정 신호에 따라 변조되는 화상 정보를 포함하는 상기 액정 표시 장치 셀 중 임의의 액정 표시 장치 셀에 대한 구동 신호를 생성하는 변조기를 포함하는 표시 장치 구동기.
- 제8항에 있어서, 상기 변조기는 상기 입력 신호에 응답하는 데이터 입력과 상기 제1 보정 신호에 응답하는 기준 입력을 갖는 제1 디지털-아날로그 컨버터를 포함하는 것인 표시 장치 구동기.
- 제9항에 있어서, 상기 제1 보정 신호에 응답하는 데이터 입력과 상기 제1 디지털-아날로그 컨버터의 상기 기준 입력에 결합된 출력을 갖는 제2 디지털-아날로그 컨버터를 더 포함하는 것인 표시 장치 구동기.
- 제8항에 있어서, 상기 액정 표시 장치 셀에 관련된 최고 밝기 불균일성을 나타내는 제2 보정 신호원을 더 포함하고, 상기 제1 보정 신호는 상기 액정 표시 장치 셀과 관련된 흑색 레벨 불균일성의 변화를 나타내고, 상기 제2 보정 신호는 상기 구동 신호를 생성하기 위해 상기 디지털-아날로그 컨버터의 출력 신호에 제공되는 것인 표시 장치 구동기.
- 제11항에 있어서, 상기 표시 장치 구동기는 적색용 촬상기, 녹색용 촬상기, 청색용 촬상기 중 하나를 포함하는 것인 표시 장치 구동기.
- 액정 갭 치수가 변화하는 액정 표시 장치로서,상기 액정 갭 치수의 변화를 보상하는데 사용되는 편평도 보정 값의 매트릭스 어레이를 포함하고, 가변의 전압 전달 함수가 제공되는 표시 장치 구동기와;상기 표시 장치 구동기에 의해 제공되는 적색, 녹색 및 청색 용의 적어도 하나의 촬상기를 포함하는 것인 액정 표시 장치.
- 제13항에 있어서, 상기 표시 장치 구동기는 적어도 디지털-아날로그 컨버터(DAC)를 더 포함하는 것인 액정 표시 장치.
- 제14항에 있어서, 상기 구동기는 제1 DAC와 제2 DAC를 포함하고, 백색 레벨은 상기 제1 DAC에 의해 설정되고, 상기 액정으로의 가변 구동 전압은 상기 제2 DAC에 의해 설정되는 것인 액정 표시 장치.
- 제13항에 있어서, 상기 표시 장치 구동기는 상기 액정의 밝기와 어둡기 레벨을 설정하는 제1 쌍의 DAC와 상기 제1 쌍의 DAC로부터의 출력 신호를 곱하고 상기 액정에 가변의 구동 전압을 추가로 제공하는 제2 쌍의 DAC를 포함하는 것인 액정 표시 장치.
- 제13항에 있어서, 상기 표시 장치 구동기는 매트릭스 어레이를 이용하여 가변의 전압 전달 함수를 제공하는 디지털 신호 처리기를 더 포함하는 것인 액정 표시 장치.
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US25025900P | 2000-11-30 | 2000-11-30 | |
US60/250,259 | 2000-11-30 | ||
PCT/US2001/044897 WO2002044797A1 (en) | 2000-11-30 | 2001-11-29 | Method and apparatus for uniform brightness in displays |
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KR20020093798A true KR20020093798A (ko) | 2002-12-16 |
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KR1020097014804A KR101013522B1 (ko) | 2000-11-30 | 2001-11-29 | 액정 셀을 충전하기 위한 구동 회로 및 방법 |
KR10-2003-7007175A KR20030081336A (ko) | 2000-11-30 | 2001-11-29 | 액정 디스플레이를 위한 구동회로 및 구동방법 |
KR1020027009753A KR20020093798A (ko) | 2000-11-30 | 2001-11-29 | 표시 장치에서 균일한 밝기를 달성하는 방법 및 장치 |
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KR1020037007173A KR100864420B1 (ko) | 2000-11-30 | 2001-11-29 | 디스플레이 드라이버 및 lcd/lcos 디스플레이를 구동하는 방법 |
KR1020097014804A KR101013522B1 (ko) | 2000-11-30 | 2001-11-29 | 액정 셀을 충전하기 위한 구동 회로 및 방법 |
KR10-2003-7007175A KR20030081336A (ko) | 2000-11-30 | 2001-11-29 | 액정 디스플레이를 위한 구동회로 및 구동방법 |
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EP (3) | EP1356447A4 (ko) |
JP (3) | JP2004514948A (ko) |
KR (4) | KR100864420B1 (ko) |
CN (3) | CN1420997A (ko) |
AU (3) | AU2002217961A1 (ko) |
BR (3) | BR0107947A (ko) |
MX (3) | MXPA02007368A (ko) |
WO (3) | WO2002045067A1 (ko) |
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- 2001-11-29 KR KR1020037007173A patent/KR100864420B1/ko active IP Right Grant
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