KR100701090B1 - 액정표시장치의 계조 구현 장치 - Google Patents
액정표시장치의 계조 구현 장치 Download PDFInfo
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- KR100701090B1 KR100701090B1 KR1020040092712A KR20040092712A KR100701090B1 KR 100701090 B1 KR100701090 B1 KR 100701090B1 KR 1020040092712 A KR1020040092712 A KR 1020040092712A KR 20040092712 A KR20040092712 A KR 20040092712A KR 100701090 B1 KR100701090 B1 KR 100701090B1
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- KR
- South Korea
- Prior art keywords
- pulse
- switch
- current source
- pixel
- adder
- Prior art date
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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
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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
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
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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
- 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
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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
- 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
- G09G2310/0272—Details of drivers for data electrodes, the drivers communicating data to the pixels by means of a current
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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
- 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
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2077—Display of intermediate tones by a combination of two or more gradation control methods
- G09G3/2081—Display of intermediate tones by a combination of two or more gradation control methods with combination of amplitude modulation and time modulation
Abstract
Description
Claims (4)
- 액정표시장치의 계조 구현 장치에 있어서,픽셀에 충전하기 위한 전류를 공급하는 전류 공급부;표시 데이터를 래치하는 버퍼;현재 입력되는 표시 데이터 및 상기 메모리 버퍼에 래치된 표시 데이터를 가산하는 가산기;상기 가산기의 출력 데이터를 수신하여 상기 출력 데이터의 값에 상응하는 펄스 폭을 갖는 스위치-온 펄스를 상기 전류 공급부로 전달하는 펄스 발생부; 및상기 전류 공급부, 가산기 및 펄스 발생부를 제어하기 위한 제어부를 구비하는 것을 특징으로 하는 계조 구현 장치.
- 제 1 항에 있어서,상기 전류 공급부는,포지티브 정전류원, 네거티브 정전류원 및 스위치를 구비하며,상기 포지티브 정전류원과 네거티브 정전류원은 상기 스위치-온 펄스를 공통으로 수신하여 상기 스위치에 전류를 출력하고,상기 스위치는 상기 제어부에 의해 상기 포지티브 정전류원 또는 네거티브 정전류원의 출력 전류를 선택적으로 상기 픽셀에 공급하는 것을 특징으로 하는 계조 구현 장치
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040092712A KR100701090B1 (ko) | 2004-11-12 | 2004-11-12 | 액정표시장치의 계조 구현 장치 |
TW094127577A TWI289283B (en) | 2004-11-12 | 2005-08-12 | Apparatus and method for realizing gray levels of LCD |
US11/207,651 US7508402B2 (en) | 2004-11-12 | 2005-08-18 | Apparatus and method for realizing gray levels of LCD |
CNB200510097898XA CN100429693C (zh) | 2004-11-12 | 2005-09-02 | 液晶显示装置的灰度实现装置及方法 |
JP2005263353A JP4336990B2 (ja) | 2004-11-12 | 2005-09-12 | 液晶表示装置の階調具現装置及び方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040092712A KR100701090B1 (ko) | 2004-11-12 | 2004-11-12 | 액정표시장치의 계조 구현 장치 |
Publications (2)
Publication Number | Publication Date |
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KR20060045285A KR20060045285A (ko) | 2006-05-17 |
KR100701090B1 true KR100701090B1 (ko) | 2007-03-29 |
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Family Applications (1)
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KR1020040092712A KR100701090B1 (ko) | 2004-11-12 | 2004-11-12 | 액정표시장치의 계조 구현 장치 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7508402B2 (ko) |
JP (1) | JP4336990B2 (ko) |
KR (1) | KR100701090B1 (ko) |
CN (1) | CN100429693C (ko) |
TW (1) | TWI289283B (ko) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI409768B (zh) * | 2005-03-02 | 2013-09-21 | Innolux Corp | 主動式矩陣顯示裝置及其驅動方法 |
KR101315380B1 (ko) | 2006-10-16 | 2013-10-07 | 삼성디스플레이 주식회사 | 디스플레이장치 및 그 제어방법 |
JP2008175861A (ja) * | 2007-01-16 | 2008-07-31 | Seiko Instruments Inc | 液晶表示装置 |
JP5207885B2 (ja) * | 2008-09-03 | 2013-06-12 | キヤノン株式会社 | 画素回路、発光表示装置及びそれらの駆動方法 |
KR100998015B1 (ko) * | 2009-01-20 | 2010-12-08 | 삼성엘이디 주식회사 | 발광소자의 전류분산을 평가하는 방법 및 이를 이용한 평가시스템 |
Citations (6)
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JPH10105124A (ja) | 1996-09-30 | 1998-04-24 | Toshiba Electron Eng Corp | 液晶駆動回路 |
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2004
- 2004-11-12 KR KR1020040092712A patent/KR100701090B1/ko active IP Right Grant
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2005
- 2005-08-12 TW TW094127577A patent/TWI289283B/zh active
- 2005-08-18 US US11/207,651 patent/US7508402B2/en active Active
- 2005-09-02 CN CNB200510097898XA patent/CN100429693C/zh active Active
- 2005-09-12 JP JP2005263353A patent/JP4336990B2/ja active Active
Patent Citations (6)
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JPH10105124A (ja) | 1996-09-30 | 1998-04-24 | Toshiba Electron Eng Corp | 液晶駆動回路 |
KR19980071872A (ko) * | 1997-02-27 | 1998-10-26 | 야스카와 히데아키 | 액정 패널의 구동방법과 세그먼트 구동기와 표시 제어기와 액정 |
KR20020032018A (ko) * | 2000-10-25 | 2002-05-03 | 윤종용 | 적응형 휘도 증대 기능을 갖는 액정 표시 장치 및 이의구동 장치와 이의 구동 방법 |
JP2004004788A (ja) | 2002-04-24 | 2004-01-08 | Seiko Epson Corp | 電子素子の制御回路、電子回路、電気光学装置、電気光学装置の駆動方法、及び電子機器、並びに電子素子の制御方法 |
KR20050012434A (ko) * | 2003-07-25 | 2005-02-02 | 매그나칩 반도체 유한회사 | 펄스 폭 변조 구동 방식을 이용한 다계조의 화상 표시 장치 |
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Also Published As
Publication number | Publication date |
---|---|
JP4336990B2 (ja) | 2009-09-30 |
KR20060045285A (ko) | 2006-05-17 |
CN1773597A (zh) | 2006-05-17 |
TWI289283B (en) | 2007-11-01 |
JP2006139258A (ja) | 2006-06-01 |
CN100429693C (zh) | 2008-10-29 |
TW200615883A (en) | 2006-05-16 |
US7508402B2 (en) | 2009-03-24 |
US20060103617A1 (en) | 2006-05-18 |
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