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KR950014956A - 액정소자의 구동방법 및 그 액정소자 - Google Patents

액정소자의 구동방법 및 그 액정소자 Download PDF

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KR950014956A
KR950014956A KR1019940031444A KR19940031444A KR950014956A KR 950014956 A KR950014956 A KR 950014956A KR 1019940031444 A KR1019940031444 A KR 1019940031444A KR 19940031444 A KR19940031444 A KR 19940031444A KR 950014956 A KR950014956 A KR 950014956A
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liquid crystal
crystal element
driving
pixel
driving method
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게이이찌 니또
아끼오 야스다
히데히꼬 다까나시
영 보 양
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오가 노리오
소니 가부시끼가이샤
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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
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • 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
    • G09G3/3637—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals with intermediate tones displayed by domain size control
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/141—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using 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
    • G09G2310/0264—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
    • 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
    • G09G2310/06—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
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/061—Details of flat display driving waveforms for resetting or blanking
    • 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
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/066—Waveforms comprising a gently increasing or decreasing portion, e.g. ramp
    • 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
    • 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
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • 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
    • G09G3/2074—Display of intermediate tones using sub-pixels

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)

Abstract

투명전극(2a, 2b) 및 배향막(3a, 3b)을 이 순으로 배설한 1쌍의 기판(la, 1b)이 소정의 간극을 두어 대향배치되고, 상기 간극내에 강유전성 액정(5)이 주입되어 있는 액정소자로서, 이 액정을 스위칭하기 위한 임계치전압이 다른 영역이 미세하게 분포되어 있는 극정소자를 펄스전압 및/또는 펄스폭 변조방식, 화소전극분할방식 또는 타임인테그레이션방식에 의해 구동하는 구동방법 및 그 액정소자이다.
액정소자의 아날로그계조성(階調性)을 한층 향상시킬 수 있고, 또한 대면적의 액정표시소자를 저코스트로 실현하고, 그 풀컬러비디오레이트에서의 구동도 가능하게 하는 것이다. 또, 상기 각 구동방식을 조합할 때는 전술의 임계치전압이 다른 미세영역을 가지고 있지 않아도, 계조성을 동일하게 발현할 수 있다.

Description

액정소자의 구동방법 및 그 액정소자
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 의한 액정표시소자 개략 평면도 및 단면도,
제2도는 이 액정표시소자의 사용시의 개략 단면도.

Claims (16)

1쌍의 기체(基體) 사이에 액정이 배설되고, 이 액정을 스위칭하기 위한 임계치전압이 다른 영역이 미세하게 분포되어 있는 액정소자를 매트릭스구동에 의해 구동하는데 있어서, 어드레싱신호를 주사전극에 인가하는 것과 동기하여, 화소의 계조(階調)에 대응하여 펄스전압 및/또는 펄스폭을 변조한 데이터 신호를 데이터전극에 인가하는 액정소자의 구동방법.
제1항에 기재한 액정소자의 매트릭스구동에 있어서, 1화소를 구성하는 데이터전극을 서로 다른 면적의 복수 부분으로 분할하고, 어드레싱신호를 주사전극에 인가하는 것과 동기하여, 화소의 계조에 대응한 데이터신호의 조합을 상기 분할된 복수의 데이터전극부분에 인가하는 액정소자의 구동방법.
제1항에 기재한 액정소자의 매트릭스구동에 있어서,화소의 계조에 대응하여, 1프레임 또는 1필드내에서 1화소당 복수회의 라인어드레싱을 반복하는 액정소자의 구동방법,
제2항에 기재한 구동방법과, 제3항에 기재한 구동방법과를 조합하는 액정소자의 구동방법.
제4항에 기재한 구동방법에 있어서, 1화소를 구성하는 데이터전극의 분할 수를 n으로 하고, 1프레임 또는 1필드내에서의 1화소당의 라인어드레싱 횟수를 m으로 했을 때, 상기 데이터전극의 분할부분의 면적비를 1 : (m+1) : …: (m+1)n-2: (m+1)n-1로 하는 액정소자의 구동방법.
제1항에 기재된 구동방법과, 제3항에 기재한 구동방법과를 조합하는 액정소자의 구동방법.
제6항에 기재한 구동방법에 있어서, 1화소의 선형적인 계조수≥(m+1)n-l+l를 부여하는 최대 정수 n 또는 1화소의 비선형적인 계조수≥n+1를 부여하는 최대 정수 n와, 1프레임 또는 1필드내에서의 1화소당의 라인어드레싱 횟수 m와를 조합하여, 1화소의 투과율비를 1 : (m+1) : … : (m+1)n-2: (m+1)n-1로 하는 액정소자의 구동방법.
제1항에 기재된 구동방법과, 제2항에 기재한 구동방법과를 조합하는 액정소자의 구동방법.
제8항에 기재한 구동방법에 있어서, 계조한 데이터신호에 의한 1 화소의 계조수 1와, 1화소를 구성하는 데이터전극의 분할수 n와를 조합하여,이 데이터전극의 분할부분의 면적비를 1 : 1 … : 1n-2: 1n-1로 하는 액정소자의 구동방법.
제1항에 기재한 구동방법과, 제2항에 기재한 구동방법과, 제3항에 기재한 구동방법과를 조합하는 액정소자의 구동방법.
제10항에 기재한 구동방법에 있어서, 변조한 데이터신호와 1화소를 구성하는 데이터전극의 분할과의 조합으로 얻어지는 1화소의 선형적인 계조수≥(m+1)n-l+l를 부여하는 최대 정수 n 또는 1화소의 비선형적인 계조수≥n+1를 부여하는 최대 정수 n와, 1프레임 또는 1필드내에서의 1화소당의 라인어드레싱 횟수 m와를 조합하여, 1화소의 투과율비를 1 : (m+1) : …: (m+1)n-2: (m+1)n-1로 하는 액정소자의 구동방법.
제1항∼제11항중 어느 한 항에 있어서, 패시브매트릭스 액정디스플레이의 화소에 컬러필터를 조합하는 구동방법.
제1항∼제11항 중 어느 한 항에 있어서, 패시브래트릭스 액정디스플레이에 대하여, 1프레임 또는1필드내에서 각 색의 백라이트를 각각 최소한 1회 전환하여, 각 색에 대응한 계조를 선택하는 구동방법.
제1항∼제13항 중 어느 한 항에 있어서, 투명전극 및 배향막을 이 순으로 배설한 1쌍의 기판이 소정의 간극을 두어 대향배치되고, 상기 간극내에 강유전성 액정이 주입되어 있는 액정소자로서, 반전 도메인에 의한 투과율이 25%일 때에 2㎛Φ이상의 크기의 도메인 1㎟의 시야중에 300개 이상 존재하고, 또한 그 도메인내에서의 임계치전압폭이 투과유 10∼90%의 범위에서 2볼트 이상이고, 이것에 의해 계조표시를 행할 수 있도록 구성한 액정소자 매트릭스구동하는 구동방법.
제4항∼제13항 중 어느 한 항에 있어서, 제1항이 기재한 액정소자 이외의 액정소자를 사용하는 액정소자의 구동방법.
제1항∼제15항중 어느 한 항에 기재한 구동방법에 의해 구동되도록 구성한 액정소자.
※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940031444A 1993-11-30 1994-11-28 액정소자의 구동방법 및 그 액정소자 KR950014956A (ko)

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JP93-325,850 1993-11-30
JP5325850A JPH07152017A (ja) 1993-11-30 1993-11-30 液晶素子の駆動方法及びその液晶素子

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KR100538782B1 (ko) * 2001-04-19 2005-12-26 가부시키가이샤 히타치세이사쿠쇼 디스플레이장치와 그 구동방법
KR100866534B1 (ko) * 2007-01-31 2008-11-03 충남대학교산학협력단 액정 표시 장치의 전극

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JPH07152017A (ja) * 1993-11-30 1995-06-16 Sony Corp 液晶素子の駆動方法及びその液晶素子
JPH10282472A (ja) * 1997-04-02 1998-10-23 Sharp Corp 強誘電性液晶表示素子の駆動方法および駆動回路
KR20000001145A (ko) * 1998-06-09 2000-01-15 손욱 반강유전성 액정표시장치의 구동방법
US6809717B2 (en) * 1998-06-24 2004-10-26 Canon Kabushiki Kaisha Display apparatus, liquid crystal display apparatus and driving method for display apparatus
GB2341476A (en) * 1998-09-03 2000-03-15 Sharp Kk Variable resolution display device
US6670937B1 (en) * 1999-03-01 2003-12-30 Canon Kabushiki Kaisha Liquid crystal display apparatus
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US6016133A (en) 2000-01-18

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