KR950024141A - 액정 구동 방법 및 액정 구동 장치 - Google Patents

액정 구동 방법 및 액정 구동 장치 Download PDF

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Publication number
KR950024141A
KR950024141A KR1019940037224A KR19940037224A KR950024141A KR 950024141 A KR950024141 A KR 950024141A KR 1019940037224 A KR1019940037224 A KR 1019940037224A KR 19940037224 A KR19940037224 A KR 19940037224A KR 950024141 A KR950024141 A KR 950024141A
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KR
South Korea
Prior art keywords
liquid crystal
reference voltage
analog signal
crystal drive
noise component
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KR1019940037224A
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English (en)
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KR0143359B1 (ko
Inventor
히데후미 스즈끼
아끼히로 후나꼬시
이사무 미와
Original Assignee
윌리엄 티. 엘리스
인터내셔널 비지네스 머신즈 코포레이션
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Application filed by 윌리엄 티. 엘리스, 인터내셔널 비지네스 머신즈 코포레이션 filed Critical 윌리엄 티. 엘리스
Publication of KR950024141A publication Critical patent/KR950024141A/ko
Application granted granted Critical
Publication of KR0143359B1 publication Critical patent/KR0143359B1/ko

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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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/12—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • H04N3/127—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays 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
    • G09G2230/00—Details of flat display driving waveforms
    • 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
    • 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
    • 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
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Analogue/Digital Conversion (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

(목적) 화면상에 플리커링(flickering)이나 노이즈를 발생시키지 않고 액정 패널을 구동한다.
(구성) 가산 회로(26)는, 필터(24)에서 검출된 아날로그 신호의 노이즈 성분을 전원(16)으로부터의 기준 전압에 가산하고, 위상 조정 회로(28)는 노이즈 성분이 가산된 기준 전압의 위상을 조정한다. 회로(12)에서는, 아날로그신호를 보유지지하며, 비교기(141-14n)으로 출력한다. 회로(28)로부터의 기준전압은, 저항(181-18n)에 의해 분압되어 임계 전압(TV1-Tvn)으로서, 비교기(141-14n)로 출력된다·
비교기(14)는, 입력된 아날로그 신호와 전압(TV)과를 비교하여, 전압(TV)보다 아날로그 신호가 큰 경우에, 소정의 신호를 인코더(20)로 출력한다. 인커더(20)는, 비교기(14)로부터의 신호를 디지탈 변환하여 액정 패널의 전극에 인가한다.

Description

액정 구동 방법 및 액정 구동 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 실시예의 액정 구동 장치의 전기 회로를 개략적으로 도시한 도면.

Claims (4)

  1. 화상을 전압파형으로 표시한 아날로그 신호의 노이즈 성분에 따라 기준 전압을 생성하고, 상기 기준 전압과 상기 아날로그 신호를 비교하여 아날로그 신호를 디지탈 신호로 변환하며, 상기 변환된 디지탈 신호를 액정 패널의 대응하는 전극에 인가하여 액정 패널을 구동하는 것을 특징으로 하는 액정 구동 방법.
  2. 제1항에 있어서, 상기 기준 전압의 위상을 조정하는 것을 특징으로 하는 액정 구동 방법.
  3. 소정의 기준 전압을 출력하는 기준 전압 출력 수단과, 화상을 전압 파형으로 표시한 아날로그 신호의 노이즈 성분을 검출하는 검출수단과, 상기 검출된 노이즈 성분을 상기 기준 전압에 가산하는 가산수단과, 상기 노이즈 성분이 가산된 기준 전압과 상기 입력된 아날로그 신호를 비교 하여 상기 아날로그 신호를 디지탈 신호로 변환하여 액정 패널의 대응하는 전극에 인가하는 인가 수단을 구비하는 것을 특징으로 하는 액정 구동 장치.
  4. 제3항에 있어서, 상기 노이즈 성분이 가산된 기준 전압의 위상을 조정하는 조정 수단을 더 설치한 것을 특징으로 하는 액정 구동 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940037224A 1994-01-28 1994-12-27 액정 구동 방법 및 액정 구동 장치 KR0143359B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6008740A JP2614410B2 (ja) 1994-01-28 1994-01-28 液晶駆動方法及び液晶駆動装置
JP94-8740 1994-01-28

Publications (2)

Publication Number Publication Date
KR950024141A true KR950024141A (ko) 1995-08-21
KR0143359B1 KR0143359B1 (ko) 1998-08-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940037224A KR0143359B1 (ko) 1994-01-28 1994-12-27 액정 구동 방법 및 액정 구동 장치

Country Status (4)

Country Link
US (1) US5771030A (ko)
EP (1) EP0665684A3 (ko)
JP (1) JP2614410B2 (ko)
KR (1) KR0143359B1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100444793B1 (ko) * 1996-08-30 2004-11-03 삼성전자주식회사 전자기방해저감회로

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW514860B (en) * 2000-11-04 2002-12-21 Au Optronics Corp Automatic flicker improving method of display
US7170488B2 (en) * 2000-12-22 2007-01-30 Logitech Europe S.A. Pointing device with solid-state roller
JP5400667B2 (ja) * 2010-03-10 2014-01-29 富士重工業株式会社 電界放出型ランプの駆動装置
CN103268748B (zh) 2013-05-23 2015-08-12 京东方科技集团股份有限公司 一种电极的电压控制方法及装置
CN104238161B (zh) * 2013-06-09 2017-12-29 北京京东方光电科技有限公司 一种公共电极电压调节装置及其方法
CN105511546B (zh) 2015-12-01 2017-05-03 深圳市华星光电技术有限公司 gamma参考电压纹波过滤电路以及液晶显示器

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JPS58164387A (ja) * 1982-03-24 1983-09-29 Casio Comput Co Ltd 映像信号ａ−ｄ変換装置
JPS60247379A (ja) * 1984-05-22 1985-12-07 Casio Comput Co Ltd 映像信号ａ／ｄ変換回路
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JPH0783487B2 (ja) * 1986-04-11 1995-09-06 カシオ計算機株式会社 カラ−映像信号のレベルコントロ−ル回路
JPS63305678A (ja) * 1987-06-08 1988-12-13 Fuji Photo Film Co Ltd 固体撮像素子の出力信号処理回路
JPH01318431A (ja) * 1988-06-20 1989-12-22 Toshiba Corp アナログ／ディジタル変換回路
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EP0542307B1 (en) * 1991-11-15 1997-08-06 Asahi Glass Company Ltd. Image display device and a method of driving the same
KR960003070B1 (ko) * 1992-05-22 1996-03-04 샤프 가부시끼가이샤 디스플레이 일체형 태블릿 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100444793B1 (ko) * 1996-08-30 2004-11-03 삼성전자주식회사 전자기방해저감회로

Also Published As

Publication number Publication date
JP2614410B2 (ja) 1997-05-28
KR0143359B1 (ko) 1998-08-17
EP0665684A3 (en) 1995-09-13
EP0665684A2 (en) 1995-08-02
US5771030A (en) 1998-06-23
JPH07219481A (ja) 1995-08-18

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