KR980700631A - 디스플레이용 칼럼 구동기 (column driver for a display) - Google Patents
디스플레이용 칼럼 구동기 (column driver for a display) Download PDFInfo
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- KR980700631A KR980700631A KR1019970703874A KR19970703874A KR980700631A KR 980700631 A KR980700631 A KR 980700631A KR 1019970703874 A KR1019970703874 A KR 1019970703874A KR 19970703874 A KR19970703874 A KR 19970703874A KR 980700631 A KR980700631 A KR 980700631A
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- digital
- analog converter
- switching capacitor
- column driver
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2011—Display of intermediate tones by amplitude modulation
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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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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
- H03M1/74—Simultaneous conversion
- H03M1/80—Simultaneous conversion using weighted impedances
- H03M1/802—Simultaneous conversion using weighted impedances using capacitors, e.g. neuron-mos transistors, charge coupled devices
- H03M1/804—Simultaneous conversion using weighted impedances using capacitors, e.g. neuron-mos transistors, charge coupled devices with charge redistribution
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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
- G09G2310/0283—Arrangement of drivers for different directions of scanning
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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
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
-
- 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
- G09G3/3614—Control of polarity reversal in general
Abstract
액정 디스플레이(LCD)와 같은 매트릭스 어드레싱된 디스플레이용 칼럼 구동기(110)가 개시된다. 상기 칼럼 구동기(110)는 10 비트 입력을 수용하고, 1024 별개의 출력 레벨을 제공하며, 예를 들어 EPROM 룩업 테이블에 의해 디지털 감마 교정과 호환가능하다. 완전한 칼럼 구동기(110)는 직렬로 상호 접속되고 병렬로 제공된 모든 외부 신호를 수신하는 칩(칩1- 칩5)의 그룹을 포함한다. 하나의 칩(210)은 전력을 절약하기 위해 어떤 시간의 순간에 활성화된다. 각각의 IC(210)에서 10비트 데이터의 선택적 극성 반전은 그것이 높거나 낮은 전압 범위에서 동작하는 스위칭된 캐패시터 디지털 대 아날로그 변환기 (CAPDAC) (224)에 공급되기 전에 수행된다. 모든 CAPDAC(224)는 동시에 로딩되고 각각의 라인 시간의 대략 95% 동안 정규 출력을 제공한다. 각각의 CAPDAC(224) 출력은 CAPDAC(224)가 동시에 여전히 평이하게 범위를 변경하고 연상증폭기(228)가 구동을 계속하도록 하는2개 CMOS 스위치를 통해 버퍼 연산증폭기 (228)에 접속된다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 칼럼 구동기의 고레벨 기능적 블록도의 바람직한 실시예를 도시하는 도면.
제2도는 제1도의 칼럼 구동기의 다른 기능적 블록도를 도시하는 도면.
제3도는 제2도의 구동기에 대해 외부적으로 제공된 신호의 다이밍도를 도시하는 도면.
Claims (8)
- 개별 라인 간격 동안 화상 엘리먼트의 라인을 표시하는 다수의 디스플레이의 칼럼용 구동 신호를 형성하기 위한 칼럼 구동 회로에 있어서, 상기 디스플레이내의 개별 다수의 화상 엘리먼트에 대응하는 디지털 값을 홀딩하는 다수의 저장 셀을 가지는 레지스터 수단; 상기 디지털 값을 표현하는 아날로그 신호 레벨을 각각 발생하는 상기 다수의 저장 셀의 각각에 결합되는 스위칭 캐패시터 디지털 대 아날로그 변환기; 및 상기 라인 시간의 절반보다 더 큰 간격동안 상기 디스플레이의 상기 개별 다수의 칼럼을 구동하는 신호를 형성하는 상기 아날로그 신호 레벨에 응답하는 구동기 증폭기 수단을 포함하는 것을 특징으로 하는 칼럼 구동기 회로.
- 제 1항에 있어서, 상기 디스플레이는 액정 디스플레이이며 상기 스위칭 캐패시터 디지털 대 아날로그 변환기 수단은 상기 디지털 값의 덜 중요한 비트의 그룹을 개별적으로 처리한 다음에 상기 디지털 값의 가장 중요한 비트의 그룹을 처리하는 캐패시터 어레이 수단을 더 포함하는 것을 특징으로 하는 칼럼 구동기 회로.
- 제 2항에 있어서, 상기 스위칭 캐패시터 디지털 대 아날로그 변환기 수단은 상기 가장 중요한 비트의 처리가 완료될 때까지 상기 디지털의 덜 중요한 비트의 상기 그룹을 대표하는 아날로그 전압을 홀딩하기 위한 저장 캐패시터 수단을 더 포함하는 것을 특징으로 하는 칼럼 구동기 회로.
- 제 3항에 있어서, 상기 스위칭 캐패시터 디지털 대 아날로그 변환기 수단은 상기 스위칭 캐패시터 디지털 대 아날로그 변환기 수단이 상기 구동기 증폭기 수단의 출력에 영향을 주지않고 전압 범위를 스위칭하도록 상기 스위칭 캐패시터 디지털 대 아날로그 변환기 수단과 상기 구동기 증폭기 수단 사이에 효과적으로 배치되는 스위칭 수단을 추가로 포함하여 적어도 2개 전압 범위에서 동작하는 것을 특징으로 하는 칼럼 구동기 회로.
- 제 2항에 있어서, 상기 스위칭 캐패시터 디지털 대 아날로그 변환기 수단은 상기 스위칭 캐패시터 디지털 대 아날로그 변환기 수단이 상기 구동기 증폭기 수단의 출력에 영향을 주지않고 전압 범위를 스위칭하도록 상기 스위칭 캐패시터 디지털 대 아날로그 변환기 수단과 상기 구동기 증폭기 수단 사이에 효과적으로 배치되는 스위칭 수단을 추가로 포함하여 적어도 2개 전압 범위에서 동작하는 것을 특징으로 하는 칼럼 구동기 회로.
- 제 1항에 있어서, 상기 구동기 증폭기 수단은 상기 구동기 증폭기 수단을 자동 측정하기 위한 수단을 더 포함하는 것을 특징으로 하는 칼럼 구동기 회로.
- 제 2항에 있어서, 상기 회로는, 상기 디스플레이의 온도를 감지하여 그것에 대응하는 디지털 값을 형성하기 위한 온도 감지 수단과; 디지털 형태로 상기 디스플레이의 수명을 표시하기 위한 수단과;상기 온도 감지 수단에 응답하여 상기 칼럼 구동기 회로에 감마 교정된 디지털 입력을 제공하기 위한 감마 교정 수단을 더 포함하는 것을 특징으로 하는 칼럼 구동기 회로.
- 소정 수의 디지털 값을 수신하기 위한 수단; 상기 소정 수의 디지털 값의 하나의 그룹과 아날로그 신호값에 대응하는 상기 소정 수의 디지털 값의 다른 그룹 둘다를 개별적으로 변환하기 위한 수단; 상기 다른 그룹이 변환되는 동안 상기 디지털 값의 변화된 그룹을 위해 상기 아날로그 신호값을 저장하기 위한 수단; 및 상기 전체 소정 수의 디지털 값을 대표하는 아날로그 신호값을 형성하도록 상기 하나의 그룹과 상기 다른 그룹에 대해 상기 아날로그 신호값을 결합하기 위한 수단을 포함하는 것을 특징으로 하는 스위칭 캐패시터 디지털 대 아날로그 변환기.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/356,937 US5739805A (en) | 1994-12-15 | 1994-12-15 | Matrix addressed LCD display having LCD age indication, and autocalibrated amplification driver, and a cascaded column driver with capacitor-DAC operating on split groups of data bits |
US08/356,937 | 1994-12-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR980700631A true KR980700631A (ko) | 1998-03-30 |
KR100407224B1 KR100407224B1 (ko) | 2004-08-09 |
Family
ID=23403585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019970703874A KR100407224B1 (ko) | 1994-12-15 | 1995-12-08 | 디스플레이용칼럼구동기 |
Country Status (5)
Country | Link |
---|---|
US (2) | US5739805A (ko) |
EP (1) | EP0834170A4 (ko) |
JP (1) | JPH10510928A (ko) |
KR (1) | KR100407224B1 (ko) |
WO (1) | WO1996018990A1 (ko) |
Families Citing this family (75)
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JP3627536B2 (ja) * | 1998-10-16 | 2005-03-09 | セイコーエプソン株式会社 | 電気光学装置の駆動回路、電気光学装置およびこれを用いた電子機器 |
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- 1994-12-15 US US08/356,937 patent/US5739805A/en not_active Expired - Fee Related
-
1995
- 1995-12-08 KR KR1019970703874A patent/KR100407224B1/ko not_active IP Right Cessation
- 1995-12-08 JP JP8518904A patent/JPH10510928A/ja not_active Ceased
- 1995-12-08 WO PCT/US1995/015177 patent/WO1996018990A1/en active Search and Examination
- 1995-12-08 EP EP95942872A patent/EP0834170A4/en not_active Withdrawn
-
1997
- 1997-07-07 US US08/888,912 patent/US6046719A/en not_active Expired - Fee Related
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US6046719A (en) | 2000-04-04 |
EP0834170A4 (en) | 1999-03-31 |
US5739805A (en) | 1998-04-14 |
WO1996018990A1 (en) | 1996-06-20 |
JPH10510928A (ja) | 1998-10-20 |
EP0834170A1 (en) | 1998-04-08 |
KR100407224B1 (ko) | 2004-08-09 |
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