KR100540566B1 - 액정표시장치의 디지털아날로그변환장치 - Google Patents
액정표시장치의 디지털아날로그변환장치 Download PDFInfo
- Publication number
- KR100540566B1 KR100540566B1 KR1020040059661A KR20040059661A KR100540566B1 KR 100540566 B1 KR100540566 B1 KR 100540566B1 KR 1020040059661 A KR1020040059661 A KR 1020040059661A KR 20040059661 A KR20040059661 A KR 20040059661A KR 100540566 B1 KR100540566 B1 KR 100540566B1
- Authority
- KR
- South Korea
- Prior art keywords
- control signal
- correction control
- gamma
- response
- gamma correction
- 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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0828—Several active elements per pixel in active matrix panels forming a digital to analog [D/A] conversion circuit
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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
- G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims (3)
- 색상선택신호에 응답하여 레드 감마보정 제어신호, 그린 감마보정 제어신호, 또는 블루 감마보정제어신호 중 어느 하나를 선택하여 출력하기 위한 감마보정제어신호 선택부;상기 감마보정제어신호 선택부의 출력신호에 응답하여 색상에 따라 패널이 갖는 휘도 특성을 보정하여 감마전압을 생성하기 위한 감마전압 생성부;각각 레드, 그린, 및 블루 디지털신호에 응답하여 상기 감마전압 생성부의 출력신호 중 어느 하나를 선택하여 아날로그전압으로 출력하기 위한 레드, 그린, 및 블루 디코더;상기 레드, 그린, 및 블루 디코더의 출력신호를 각각 버퍼링하기 위한 제1 내지 제3 버퍼; 및상기 색상선택신호에 응답하여 상기 제1 내지 제3 버퍼의 출력신호 중 어느 하나를 선택하여 출력하기 위한 선택부를 구비하는 액정표시장치의 디지털아날로그변환장치.
- 제1항에 있어서,상기 선택부는 상기 제1 내지 제3 버퍼부의 출력신호를 시분할 방법으로 순차적으로 출력하는 것을 특징으로 하는 액정표시장치의 디지털아날로그변환장치.
- 제1항 또는 제2항에 있어서,상기 제1 내지 제3 버퍼는 단일이득앰프인 것을 특징으로 하는 디지털아날로그변환장치.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040059661A KR100540566B1 (ko) | 2004-07-29 | 2004-07-29 | 액정표시장치의 디지털아날로그변환장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040059661A KR100540566B1 (ko) | 2004-07-29 | 2004-07-29 | 액정표시장치의 디지털아날로그변환장치 |
Publications (1)
Publication Number | Publication Date |
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KR100540566B1 true KR100540566B1 (ko) | 2006-01-10 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020040059661A KR100540566B1 (ko) | 2004-07-29 | 2004-07-29 | 액정표시장치의 디지털아날로그변환장치 |
Country Status (1)
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KR (1) | KR100540566B1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106297690A (zh) * | 2016-08-11 | 2017-01-04 | 深圳市华星光电技术有限公司 | 伽马参考电压产生器、产生方法以及液晶显示装置 |
WO2020207163A1 (zh) * | 2019-04-08 | 2020-10-15 | 北海惠科光电技术有限公司 | 驱动电路和显示装置 |
-
2004
- 2004-07-29 KR KR1020040059661A patent/KR100540566B1/ko active IP Right Grant
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106297690A (zh) * | 2016-08-11 | 2017-01-04 | 深圳市华星光电技术有限公司 | 伽马参考电压产生器、产生方法以及液晶显示装置 |
WO2018028151A1 (zh) * | 2016-08-11 | 2018-02-15 | 深圳市华星光电技术有限公司 | 伽马参考电压产生器、产生方法以及液晶显示装置 |
US10825407B2 (en) | 2016-08-11 | 2020-11-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Gamma reference voltage generator, method for generatng gamma reference voltage, and liquid crystal display device |
WO2020207163A1 (zh) * | 2019-04-08 | 2020-10-15 | 北海惠科光电技术有限公司 | 驱动电路和显示装置 |
US11468816B2 (en) | 2019-04-08 | 2022-10-11 | Beihai Huike Photoelectric Technology Co., Ltd. | Driver circuit and display device |
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