[go: up one dir, main page]

KR940005979A - 액정 표시 장치 - Google Patents

액정 표시 장치 Download PDF

Info

Publication number
KR940005979A
KR940005979A KR1019930013555A KR930013555A KR940005979A KR 940005979 A KR940005979 A KR 940005979A KR 1019930013555 A KR1019930013555 A KR 1019930013555A KR 930013555 A KR930013555 A KR 930013555A KR 940005979 A KR940005979 A KR 940005979A
Authority
KR
South Korea
Prior art keywords
liquid crystal
optical device
electro
crystal electro
pixel portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
KR1019930013555A
Other languages
English (en)
Other versions
KR100312926B1 (ko
Inventor
다나까 다까끼
사또 유즈르
Original Assignee
아이자와 스스무
세이꼬 엡슨 가부시끼가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 아이자와 스스무, 세이꼬 엡슨 가부시끼가이샤 filed Critical 아이자와 스스무
Publication of KR940005979A publication Critical patent/KR940005979A/ko
Application granted granted Critical
Publication of KR100312926B1 publication Critical patent/KR100312926B1/ko
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • 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
    • G02F1/1391—Bistable or multi-stable liquid crystal cells
    • 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
    • G02F1/1396—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 the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • G02F1/1397—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 the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell the twist being substantially higher than 90°, e.g. STN-, SBE-, OMI-LC cells
    • 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
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133371—Cells with varying thickness of the liquid crystal layer
    • 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
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0469—Details of the physics of pixel operation
    • G09G2300/0478—Details of the physics of pixel operation related to liquid crystal pixels
    • G09G2300/0482—Use of memory effects in nematic liquid crystals
    • G09G2300/0486—Cholesteric liquid crystals, including chiral-nematic liquid crystals, with transitions between focal conic, planar, and homeotropic states
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

본 발명은 키랄네마틱(chiral nematic)액정을 이용한 쌍안정성을 갖는 액정 전기 광학 소자, 특히 그 쌍안정성을 이용하여 스위칭을 행하고, 단순 매트릭스 구동이 가능한 액정 전기 광학 소자에 관한 것으로, 한쌍의 편광판간에 갖는 한쌍의 기판이 대향하는 각 내면에 전극, 배향막이 설치되고, 동시에 키랄네마틱 액정이 끼워지고, 키랄네마틱 액정은 각 배향막에 행해진 러빙 방향이 이루는 각ø에 대해서 전압을 인가하기 전의 초기 상태에서의 비틀림각이 약 ør로 되도록 나선 피치 Po가 조정되고, 상기 초기 상태에 있어서, 각 배향막과 접하고 있는 액정 분자의 다이렉터 벡터와 기판면이 이루는 각은 서로 역부호의 관계에 있고, 상기 초기 상태에 펄스 전압을 인가한 후의 완화 상태로서 액정의 비틀림각이 약ør+ 180°)와 약(ør-180°)인 2개의 준안정 상태를 갖고, 키랄네마틱 액정층의 두께 d와 외관상의n의 크기R(d-

Description

액정 표시 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 액정 전기 광학 소자의 단면도,
제2도는 본 발명의 액정 전기 광학 소자의 단면도,
제3도는 편광축의 각도에 대한 정의를 나타내는 도면.
제4도는 구동 파형을 나타내는 도면,
제5도는 편광축의 각도 P,A의 최적치를 나타내는 도면.

Claims (21)

  1. 한쌍의 편광판간에 갖는 한쌍의 기판이 대향하는 각 내면에 전극, 배향막이 설치되고, 동시에 키랄네마틱 액정이 끼워지고, 키랄네마틱 액정은 각 배향막에 행해진 러빙 방항이 이루는 각 ψr에 대해서 전압을 인가하기 정의 초기 상태에서의 비틀림각이 약 ψr로 되도록 나선 피치 Po가 조정되고, 상기 초기 상태에 있어서, 각 배향막과 접하고 있는 액정 분자의 다이렉터 벡터와 기판면이 이루는 각은 서로 역부호의 관계에 있고, 상기 초기 상태에 펄스 전압을 인가한 후의 완화 상태로서 액정의 비틀림각이 약(ψr+180°)와 약(ψr+180°)인 2개의 준안정 상태를 갖고, 키랄네마틱 액정층의 두께 d와 외관상의n의 크기 R(d-n)및 ψr의 수칙에 따라서 각 편광판의 편광축과 한쪽의 러빙 방향과의 각 각도 P,A를 상기 준안정 상태간의 콘트라스트비가 2이상이 되도록 서로 설정하는 것을 특징으로 하는 액정 전기 광학 소자.
  2. 제1항에 있어서. 콘트라스트비는 반사형에 있어서 2이상인 액정 전기 광학 소자.
  3. 제1항에 있어서, 콘트라스트비는 투과형에 있어서 10이상인 액정 전피 광학 소자.
  4. 제1할에 있어서. ψr이 90°이상 270°이하인 액정 전기 광학 소자.
  5. 제1항에 있어서, ψr이 160°이상 200°이하인 액정 전기 광학 소자.
  6. 제1항에 있어서, ψr이 180°인 액정 전기 광학 소자.
  7. 제1항에 있어서, 나선 피지 Po와 액정층의 두께 d가 0.8ψr/360°인 액정 전기 광학 소자.
  8. 제5항에 있어서, 액정 배향막과 접하고 있는 액정 분자의 프리틸트각의 절대치가 1°이상 25°이하인 액정 전기 광학소자.
  9. 제5항에 있어서,각도 P,A및 R은 이하의 관계를 충족하는 액정 전기 광학 소자.
  10. 제1항에 있어서, 액정의 2개의 준안정 상태의 적어도 하나는, ｜L｜·△n》λ단지, L은 2πd/(ψr+180°) 또는 2πd/(ψr-180°), λ의 빛의 파장의 조건을 충족하지 않고, 동시에 콘트라스트비가 10이상인 액정 전기 광학 소자.
  11. 제10항에 있어서, L·△n은 1.88㎛미만인 액정 전기 광학 소자.
  12. 제10항에 있어서, 2개의 준안정 상태 중 적어도 한쪽은 광학적으로 등방상인 액정 전기 광학 소자.
  13. 제10. 11 또는 12항에 있어서, ψr이 90"이상 270°이하인 액정 전기 광학 소자.
  14. 제10, 11 또는 제12항에 있어서, ψr이 160°이상 270°이하인 액정 전기 광학 소자.
  15. 제10,11 또는 12항에 있어서, ψr이 180°이상이며, 각도 P,A 및 R은 이하의 관계를 충족하는 액정 전기 광학 소자.
  16. 제1항에 있어서, 액정 전기 광학 소자의 각 전극을 제각기 주사 전극군과 신호 전극군에 형성하여 매트릭스 배치하고, 주사 전극군과 신호 전극군의 교차부에 의해서 화소부를 형성한 액정 표시 장치.
  17. 제16항에 있어서. 화소부의 임의의 일변과 각 러빙 방향이 이루는 각도률 저각기 17'이상 80'이하로 한 액정 표시 장치.
  18. 제 16항에 있어서, 적어도 한쪽의 러빙 방향은 화소부에 의해서 구성된 표시 판넬의 상하 방향에 대한 각ψa가 -45°ψa45°인 액정 표시 장치.
  19. 제16항에 있어서, 인접하는 화소간에서 구성되는 비화소부의 광투과율이 화소부에서의 광투과율 보다 낮은 액정 표시 장치.
  20. 제19항에 있어서, 비화소부 및 화소부 주변부에 차광성 물질의 층을 형성한 액정 표시 장치.
  21. 제19항에 있어서, 화소부에서의 액정충의 두께와 비화소부에서의 액정층의 두께를 다르게하고. 액정의 초기 상태률 다르게한 액정 전기 광학 소자.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930013555A 1992-07-16 1993-07-16 액정전기광학소자및액정표시장치 Expired - Fee Related KR100312926B1 (ko)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP92-189436 1992-07-16
JP18943692 1992-07-16
JP92-197034 1992-07-23
JP19703492 1992-07-23
JP92-217931 1992-08-17
JP21793192 1992-08-17
JP26383692 1992-10-01
JP92-263836 1992-10-01
JP33905192 1992-12-18
JP92-339051 1992-12-18
JP19560193A JP3634390B2 (ja) 1992-07-16 1993-07-14 液晶電気光学素子
JP93-195601 1993-07-14

Publications (2)

Publication Number Publication Date
KR940005979A true KR940005979A (ko) 1994-03-22
KR100312926B1 KR100312926B1 (ko) 2001-12-28

Family

ID=27553615

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930013555A Expired - Fee Related KR100312926B1 (ko) 1992-07-16 1993-07-16 액정전기광학소자및액정표시장치

Country Status (5)

Country Link
US (2) US5488499A (ko)
EP (1) EP0579247B1 (ko)
JP (1) JP3634390B2 (ko)
KR (1) KR100312926B1 (ko)
DE (1) DE69328852T2 (ko)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3753440B2 (ja) * 1992-05-07 2006-03-08 セイコーエプソン株式会社 液晶表示装置及び液晶表示装置の駆動方法
DE69318062T2 (de) * 1992-05-07 1998-10-01 Seiko Epson Corp Flüssigkristallanzeigegerät mit zwei metastabilen Zuständen und Steuerverfahren dafür
JP3634390B2 (ja) * 1992-07-16 2005-03-30 セイコーエプソン株式会社 液晶電気光学素子
JP3489169B2 (ja) 1993-02-25 2004-01-19 セイコーエプソン株式会社 液晶表示装置の駆動方法
US6154190A (en) * 1995-02-17 2000-11-28 Kent State University Dynamic drive methods and apparatus for a bistable liquid crystal display
US6252571B1 (en) 1995-05-17 2001-06-26 Seiko Epson Corporation Liquid crystal display device and its drive method and the drive circuit and power supply circuit device used therein
JPH09304764A (ja) * 1996-05-15 1997-11-28 Nec Corp 液晶表示装置
EP0786684A4 (en) 1995-07-17 1998-04-29 Seiko Epson Corp COLOR REFLECTIVE LIQUID CRYSTAL DEVICE AND ELECTRONIC APPARATUS USING THE SAME
US7289174B1 (en) 1995-07-17 2007-10-30 Seiko Epson Corporation Reflective type color liquid crystal device and an electronic apparatus using this
JPH0968721A (ja) * 1995-08-31 1997-03-11 Sharp Corp 液晶表示素子
JP2728059B2 (ja) * 1995-10-06 1998-03-18 日本電気株式会社 反射型液晶表示装置
WO1998008132A1 (fr) 1996-08-19 1998-02-26 Seiko Epson Corporation Procede de commande d'un dispositif a cristaux liquides
US6078303A (en) 1996-12-19 2000-06-20 Colorado Microdisplay, Inc. Display system having electrode modulation to alter a state of an electro-optic layer
US6046716A (en) 1996-12-19 2000-04-04 Colorado Microdisplay, Inc. Display system having electrode modulation to alter a state of an electro-optic layer
JP3529999B2 (ja) * 1997-02-06 2004-05-24 株式会社リコー 液晶セルおよびその駆動方法
US6133895A (en) * 1997-06-04 2000-10-17 Kent Displays Incorporated Cumulative drive scheme and method for a liquid crystal display
JP3061119B2 (ja) 1997-07-15 2000-07-10 日本電気株式会社 液晶表示装置
JPH1152431A (ja) * 1997-07-31 1999-02-26 Ricoh Co Ltd 液晶表示素子
GB9717597D0 (en) * 1997-08-21 1997-10-22 Sharp Kk Liquid crystal device
JP2000098393A (ja) * 1998-09-21 2000-04-07 Sharp Corp 液晶表示装置
US6573971B1 (en) * 1999-02-05 2003-06-03 Varintelligent (Bvi) Limited Bistable twisted nematic LCD without an initial twist angle of 180 degrees and not a multiple of 90 degrees
KR100818193B1 (ko) 2000-07-05 2008-04-01 롤리크 아게 네마틱 액정 전기광학 소자 및 장치
EP1170624A1 (en) * 2000-07-05 2002-01-09 Rolic AG Nematic liquid crystal electrooptical element and device
US7253861B2 (en) * 2000-12-28 2007-08-07 Asahi Glass Company Liquid crystal optical element comprising a resin layer having a surface hardness of b or less
US6674494B2 (en) * 2000-12-28 2004-01-06 Optrex Corporation Liquid crystal optical element and test method for its boundary layer
FR2829244B1 (fr) * 2001-08-29 2004-09-10 Nemoptic Dispositif d'affichage bistable a cristal liquide nematique a masque optique perfectionne
US6784955B2 (en) * 2001-10-01 2004-08-31 The Hong Kong University Of Science And Technology Optically optimized permanently bistable twisted nematic liquid crystal displays
US20110199671A1 (en) * 2002-06-13 2011-08-18 E Ink Corporation Methods for driving electrophoretic displays using dielectrophoretic forces
US20130063333A1 (en) 2002-10-16 2013-03-14 E Ink Corporation Electrophoretic displays
FR2847704B1 (fr) * 2002-11-26 2005-01-28 Nemoptic Procede et dispositif perfectionnes d'affichage a cristal liquide nematique bistable
FR2863062B1 (fr) * 2003-11-28 2006-03-17 Nemoptic Dispositif d'affichage a ecran de type nematique bistable optimisant le noir et procede de definition de ce dispositif
FR2863061B1 (fr) * 2003-11-28 2006-02-24 Nemoptic Dispositif d'affichage a ecran de type nematique optimisant le blanc et procede de definition de ce dispositif
US8045115B2 (en) * 2006-12-22 2011-10-25 Chimei Innolux Corporation Liquid crystal display with different twisting directions of liquid crystal molecules
US8203123B2 (en) * 2009-03-10 2012-06-19 Alliant Techsystems Inc. Neutron detection by neutron capture-initiated relaxation of a ferroelectrically, ferromagnetically, and/or chemically metastable material
KR101333614B1 (ko) * 2010-06-25 2013-11-27 엘지디스플레이 주식회사 액정표시장치
CN109817128A (zh) * 2019-01-28 2019-05-28 云谷（固安）科技有限公司 一种假压对位的方法及装置
CN110824789B (zh) * 2019-10-16 2020-10-27 深圳市华星光电技术有限公司 液晶显示装置
US11086162B1 (en) * 2020-04-26 2021-08-10 Tcl China Star Optoelectronics Technology Co., Ltd. Display panel and display device

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL15741C (ko) * 1923-03-05
IT946051B (it) * 1970-12-04 1973-05-21 Hoffmann La Roche Cellula ottica
US3837730A (en) * 1973-11-28 1974-09-24 Bell Telephone Labor Inc Matrix-addressed liquid crystal display
JPS5341199A (en) * 1976-08-31 1978-04-14 Sharp Corp Liquid crystal color display unit
US4239345A (en) * 1979-04-16 1980-12-16 Bell Telephone Laboratories, Incorporated Bistable liquid crystal twist cell
US4333708A (en) * 1979-11-30 1982-06-08 Bell Telephone Laboratories, Incorporated Mechanically multistable liquid crystal cell
US4367924A (en) * 1980-01-08 1983-01-11 Clark Noel A Chiral smectic C or H liquid crystal electro-optical device
US4505548A (en) * 1980-10-20 1985-03-19 At&T Bell Laboratories Bistable liquid crystal twist cell
US4529271A (en) * 1982-03-12 1985-07-16 At&T Bell Laboratories Matrix addressed bistable liquid crystal display
FR2532453A1 (fr) * 1982-08-25 1984-03-02 Western Electric Co Dispositif d'affichage a cristaux liquides bistable utilisant des tensions de preparation
US4717243A (en) * 1982-08-25 1988-01-05 American Telephone And Telegraph Company, At&T Bell Laboratories Bistable liquid crystal display utilizing priming voltages
US4601544A (en) * 1982-10-15 1986-07-22 At&T Bell Laboratories Nematic liquid crystal storage display device
US4601543A (en) * 1982-10-15 1986-07-22 At&T Bell Laboratories Nematic liquid crystal storage display device
US4601542A (en) * 1982-10-15 1986-07-22 At&T Bell Laboratories Nematic liquid crystal storage display device
US4566758A (en) * 1983-05-09 1986-01-28 Tektronix, Inc. Rapid starting, high-speed liquid crystal variable optical retarder
US4582396A (en) * 1983-05-09 1986-04-15 Tektronix, Inc. Field sequential color display system using optical retardation
IN161652B (ko) * 1983-07-12 1988-01-09 Bbc Brown Boveri & Cie
US4664483A (en) * 1984-02-24 1987-05-12 U.S. Philips Corporation Liquid crystal display device with a hysteresis
US4701026A (en) * 1984-06-11 1987-10-20 Seiko Epson Kabushiki Kaisha Method and circuits for driving a liquid crystal display device
GB2173337B (en) * 1985-04-03 1989-01-11 Stc Plc Addressing liquid crystal cells
US4850676A (en) * 1985-07-31 1989-07-25 Seiko Epson Corporation Method for driving a liquid crystal element
US4770500A (en) * 1986-06-10 1988-09-13 Kaiser Aerospace And Electronics Corporation Method and apparatus for multi color display
US5189535A (en) * 1986-12-11 1993-02-23 Fujitsu Limited Liquid crystal display element and method for driving same
US4952032A (en) * 1987-03-31 1990-08-28 Canon Kabushiki Kaisha Display device
US5010328A (en) * 1987-07-21 1991-04-23 Thorn Emi Plc Display device
JPH078581B2 (ja) * 1987-09-14 1995-02-01 株式会社日立製作所 液晶光スイツチ駆動方法
WO1989007282A1 (en) * 1988-01-28 1989-08-10 Sanyo Electric Co., Ltd. Liquid crystal display
JP2770365B2 (ja) * 1989-01-17 1998-07-02 富士通株式会社 液晶表示素子
US5061044A (en) * 1989-05-23 1991-10-29 Citizen Watch Co., Ltd. Ferroelectric liquid crystal display having opposingly inclined alignment films wherein the liquid crystal has one twisted and two aligned states which coexist and a driving method to produce gray scale
US5065695A (en) * 1989-06-16 1991-11-19 Nordson Corporation Apparatus for compensating for non-linear flow characteristics in dispensing a coating material
JPH03125119A (ja) * 1989-10-09 1991-05-28 Sharp Corp 液晶素子の駆動方法
JPH03177817A (ja) * 1989-12-06 1991-08-01 Toshiba Corp アクティブマトリクス型液晶表示素子
JP2924055B2 (ja) * 1989-12-08 1999-07-26 セイコーエプソン株式会社 反射型液晶表示素子
GB2249653B (en) * 1990-10-01 1994-09-07 Marconi Gec Ltd Ferroelectric liquid crystal devices
JP2794499B2 (ja) * 1991-03-26 1998-09-03 株式会社半導体エネルギー研究所 半導体装置の作製方法
DE69220173T2 (de) * 1991-10-07 1997-09-18 Fujitsu Ltd Verfahren zum Steuern eines oberflächenstabilisierten ferroelektrischen Flüssigkristallanzeigeelements zur Erhöhung der Graupegelzahl
JP3634390B2 (ja) * 1992-07-16 2005-03-30 セイコーエプソン株式会社 液晶電気光学素子

Also Published As

Publication number Publication date
KR100312926B1 (ko) 2001-12-28
HK1014273A1 (en) 1999-09-24
EP0579247B1 (en) 2000-06-14
JP3634390B2 (ja) 2005-03-30
DE69328852D1 (de) 2000-07-20
DE69328852T2 (de) 2000-12-28
EP0579247A1 (en) 1994-01-19
US6072558A (en) 2000-06-06
JPH06235920A (ja) 1994-08-23
US5488499A (en) 1996-01-30

Similar Documents

Publication Publication Date Title
KR940005979A (ko) 액정 표시 장치
EP0352724B1 (en) A liquid crystal display device
KR100307988B1 (ko) 횡전계구동방식액정표시장치
JPH09160042A (ja) 液晶表示素子
KR980003742A (ko) 액정표시장치
KR950025459A (ko) 액정표시패널
AU656497B2 (en) Liquid crystal device
EP0448124A2 (en) Optical modulation device and display apparatus
KR950033581A (ko) 액정 전기 광학장치, 그것을 이용한 투사형 표시 시스템, 및 액정 전기 광학 장치의 구동 방법
GB2276730A (en) Liquid crystal display
KR940022156A (ko) 컬러액정표시장치
KR100320102B1 (ko) 수직배향된나선변형강유전성액정표시장치
KR900002107A (ko) 전기광학소자
JPH02176625A (ja) 液晶表示装置
KR970007440A (ko) 액정표시소자 및 광학이방소자
KR19980033500A (ko) 반사형 쌍안정 네마틱 액정 표시 장치
KR970007426A (ko) 강유전성 네마틱 액정 표시 장치
JPH0843861A (ja) 液晶表示素子
KR20040016404A (ko) 액정디스플레이
KR100249919B1 (ko) 광학 보상판을 갖춘 액정 디스플레이 장치
US5604616A (en) Dual function electro-optical display device exhibiting a bistable image or a fugitive image depending the applied voltage
CN107209431B (zh) 立式螺旋铁电液晶显示单元
JP3404467B2 (ja) 液晶表示装置
KR950012110A (ko) 광 보상판을 갖는 액정 디스플레이(lcd) 장치
KR20000066806A (ko) 광시야각과 협시야각 모드전환이 가능한 액정표시장치

Legal Events

Date Code Title Description
PA0109 Patent application

St.27 status event code: A-0-1-A10-A12-nap-PA0109

R17-X000 Change to representative recorded

St.27 status event code: A-3-3-R10-R17-oth-X000

AMND Amendment
P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

A201 Request for examination
AMND Amendment
P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

R17-X000 Change to representative recorded

St.27 status event code: A-3-3-R10-R17-oth-X000

R18-X000 Changes to party contact information recorded

St.27 status event code: A-3-3-R10-R18-oth-X000

R18-X000 Changes to party contact information recorded

St.27 status event code: A-3-3-R10-R18-oth-X000

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

St.27 status event code: A-1-2-D10-D21-exm-PE0902

T11-X000 Administrative time limit extension requested

St.27 status event code: U-3-3-T10-T11-oth-X000

AMND Amendment
P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

E601 Decision to refuse application
PE0601 Decision on rejection of patent

St.27 status event code: N-2-6-B10-B15-exm-PE0601

PN2301 Change of applicant

St.27 status event code: A-3-3-R10-R13-asn-PN2301

St.27 status event code: A-3-3-R10-R11-asn-PN2301

J201 Request for trial against refusal decision
PJ0201 Trial against decision of rejection

St.27 status event code: A-3-3-V10-V11-apl-PJ0201

AMND Amendment
P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

PB0901 Examination by re-examination before a trial

St.27 status event code: A-6-3-E10-E12-rex-PB0901

B701 Decision to grant
PB0701 Decision of registration after re-examination before a trial

St.27 status event code: A-3-4-F10-F13-rex-PB0701

GRNT Written decision to grant
PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U11-oth-PR1002

Fee payment year number: 1

PG1601 Publication of registration

St.27 status event code: A-4-4-Q10-Q13-nap-PG1601

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 5

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 6

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 7

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 8

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 9

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 10

FPAY Annual fee payment

Payment date: 20110920

Year of fee payment: 11

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 11

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

St.27 status event code: A-4-4-U10-U13-oth-PC1903

Not in force date: 20121016

Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

PC1903 Unpaid annual fee

St.27 status event code: N-4-6-H10-H13-oth-PC1903

Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

Not in force date: 20121016

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000