KR950024139A - 디 에이치 에프(dhf)형 액정 셀을 위한 기동 방법 - Google Patents

디 에이치 에프(dhf)형 액정 셀을 위한 기동 방법 Download PDF

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Publication number
KR950024139A
KR950024139A KR1019940040787A KR19940040787A KR950024139A KR 950024139 A KR950024139 A KR 950024139A KR 1019940040787 A KR1019940040787 A KR 1019940040787A KR 19940040787 A KR19940040787 A KR 19940040787A KR 950024139 A KR950024139 A KR 950024139A
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South Korea
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voltage
liquid crystal
type liquid
crystal cell
dhf
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KR1019940040787A
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KR100254648B1 (ko
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퓐프쉴링 위르그
샤트 마틴
Original Assignee
프리돌린 클라우스너;롤란트 보러
에프. 호프만-라 로슈 아게
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Publication of KR950024139A publication Critical patent/KR950024139A/ko
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Publication of KR100254648B1 publication Critical patent/KR100254648B1/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
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • 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
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric 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
    • 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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3651—Control of matrices with row and column drivers using an active matrix using multistable liquid crystals, e.g. ferroelectric 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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

본 발명의 액정셀 기동 방법은 각 픽셀에 예비 펄스들을 제공하여, 데이타 펄스들에 앞서 소정 전압을 형성하는 것으로 이루어져 있다. 예비펄스들은 픽셀을 최종전위 OV로 내리거나 후속기간 동안의 픽셀 전하와 같은 극성을 지닌 최종 전압으로 픽셀을 충전시킬 수 있다.

Description

디 에이치 에프(DHF)형 액정 셀을 위한 기동 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 DHF픽셀의 등가 회로도.

Claims (6)

  1. DHF형 액정셀을 위한 기동 방법에 있어서, 데이타 펄스가 공급 되기전에 각 픽셀을 소정 전압으로 만드는 것을 특징으로 하는 DHF형 액정셀을 위한 기동 방법.
  2. 제1항에 있어서, 상기 픽셀들은 라인과 같이 전압 OV로 되는 것을 특징으로 하는 DHF형 액정셀을 위한 기동 방법.
  3. 제1항에 있어서, 상기 픽셀들은 라인과 같이 상기 데이타 펄스와 동일한 극성의 전압으로 되는 것을 특징으로 하는 DHF형 액정셀을 위한 기동 방법.
  4. 제1항에 있어서, 상기 픽셀들은 라인과 같이 최대 전압으로 충전되고, 진폭 변조된 신호 형태인 상기 데이타 펄스들로 최대 양 전압과 최대 음 전압 사이의 전체 전압 스윙을 이용하는 것을 특징으로 하는 DHF형 액정셀을 위한 기동 방법.
  5. 제1항에 있어서, 상기 픽셀들은 라인과 같이 최대 전압으로 충전되고, 상기 데이타 펄스들은 최대 진폭을 가지나 반대 극성인 펄스폭 변조된 펄스들로 구성되는 것을 특징으로 하는 DHF형 액정셀을 위한 기동 방법.
  6. 제1항에 있어서, 상기 데이타 펄스들은 인터벌들에서 다수의 연속 펄스들로 구성되고, 상기 인터벌은 DHF나선의 특성 충전 시간과 같거나 더 큰것을 특징으로 하는 DHF형 액정셀을 위한 기동 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940040787A 1994-01-26 1994-12-30 디에이치에프형 액정 셀을 위한 기동 방법 KR100254648B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH23394 1994-01-26
JP233/94 1994-01-26
CH233/94 1994-01-26

Publications (2)

Publication Number Publication Date
KR950024139A true KR950024139A (ko) 1995-08-21
KR100254648B1 KR100254648B1 (ko) 2000-05-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940040787A KR100254648B1 (ko) 1994-01-26 1994-12-30 디에이치에프형 액정 셀을 위한 기동 방법

Country Status (8)

Country Link
US (1) US6163311A (ko)
EP (1) EP0666555B1 (ko)
JP (1) JP3520122B2 (ko)
KR (1) KR100254648B1 (ko)
CN (1) CN1096051C (ko)
DE (1) DE59502715D1 (ko)
HK (1) HK1011445A1 (ko)
SG (1) SG47897A1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11242207A (ja) * 1997-12-26 1999-09-07 Sony Corp 電圧発生回路、光学空間変調素子、画像表示装置並びに画素の駆動方法
KR20000001145A (ko) * 1998-06-09 2000-01-15 손욱 반강유전성 액정표시장치의 구동방법
WO2005062287A1 (ja) * 2003-12-24 2005-07-07 Hiji High-Tech Co., Ltd. 表示パネルの信号線駆動装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
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US4701026A (en) * 1984-06-11 1987-10-20 Seiko Epson Kabushiki Kaisha Method and circuits for driving a liquid crystal display device
DE3876059D1 (de) * 1987-09-18 1992-12-24 Hoffmann La Roche Ferroelektrische fluessigkristallzelle.
DE58908399D1 (de) * 1988-08-12 1994-10-27 Hoffmann La Roche Verfahren und Vorrichtung zur beschleunigten Ansteuerung von Flüssigkristallzellen des DHF-Typs.
DE3919839A1 (de) * 1989-06-17 1990-12-20 Hoechst Ag Fluessigkristall-schalt- und anzeige-element
US5243455A (en) * 1990-05-11 1993-09-07 The University Of Colorado Foundation, Inc. Chiral smectic liquid crystal polarization interference filters
US5073010A (en) * 1990-05-11 1991-12-17 University Of Colorado Foundation, Inc. Optically addressable spatial light modulator having a distorted helix ferroelectric liquid crystal member
US5539555A (en) * 1990-07-20 1996-07-23 Displaytech, Inc. High contrast distorted helex effect electro-optic devices and tight ferroelectric pitch ferroelectric liquid crystal compositions useful therein
GB2247972B (en) * 1990-09-11 1994-07-27 Stc Plc Co-ordinate addressing of liquid crystal cells
US5172257A (en) * 1991-11-08 1992-12-15 Bell Communications Research, Inc. Twisted ferroelectric liquid crystal modulator for providing gray scale
US5493426A (en) * 1991-11-14 1996-02-20 University Of Colorado Foundation, Inc. Lateral electrode smectic liquid crystal devices
US5552912A (en) * 1991-11-14 1996-09-03 Board Of Regents Of The University Of Colorado Chiral smectic liquid crystal optical modulators
US5490000A (en) * 1992-12-07 1996-02-06 Casio Computer Co., Ltd. Deformed helix ferroelectric liquid crystal display device and method of driving
JPH06194625A (ja) * 1992-12-24 1994-07-15 Casio Comput Co Ltd 強誘電性液晶表示素子の駆動方法
US5631752A (en) * 1992-12-24 1997-05-20 Casio Computer Co., Ltd. Antiferroelectric liquid crystal display element exhibiting a precursor tilt phenomenon
JP2759589B2 (ja) * 1992-12-28 1998-05-28 キヤノン株式会社 強誘電性液晶表示素子
DE69317640T2 (de) * 1992-12-28 1998-07-30 Canon Kk Verfahren und Einrichtung für eine Flüssigkristallanzeige
US5477358A (en) * 1993-06-21 1995-12-19 Case Western Reserve University Chiral nematic liquid crystal display with homeotropic alignment and negative dielectric anisotropy

Also Published As

Publication number Publication date
EP0666555B1 (de) 1998-07-08
CN1121231A (zh) 1996-04-24
JP3520122B2 (ja) 2004-04-19
EP0666555A1 (de) 1995-08-09
JPH07218934A (ja) 1995-08-18
KR100254648B1 (ko) 2000-05-01
DE59502715D1 (de) 1998-08-13
HK1011445A1 (en) 1999-07-09
SG47897A1 (en) 1998-04-17
US6163311A (en) 2000-12-19
CN1096051C (zh) 2002-12-11

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