IT1268078B1 - Visualizzatore a cristalli liquidi di tipo twisted nematic drogato con pigmenti ad ampio angolo di visione con fogli di ritardo. - Google Patents

Visualizzatore a cristalli liquidi di tipo twisted nematic drogato con pigmenti ad ampio angolo di visione con fogli di ritardo.

Info

Publication number
IT1268078B1
IT1268078B1 IT94TO000520A ITTO940520A IT1268078B1 IT 1268078 B1 IT1268078 B1 IT 1268078B1 IT 94TO000520 A IT94TO000520 A IT 94TO000520A IT TO940520 A ITTO940520 A IT TO940520A IT 1268078 B1 IT1268078 B1 IT 1268078B1
Authority
IT
Italy
Prior art keywords
droged
pigments
viewing
liquid crystal
crystal display
Prior art date
Application number
IT94TO000520A
Other languages
English (en)
Italian (it)
Inventor
Birendra Bahadur
Kam Hoi Wan
Original Assignee
Litton Systems Canada
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 Litton Systems Canada filed Critical Litton Systems Canada
Publication of ITTO940520A0 publication Critical patent/ITTO940520A0/it
Publication of ITTO940520A1 publication Critical patent/ITTO940520A1/it
Application granted granted Critical
Publication of IT1268078B1 publication Critical patent/IT1268078B1/it

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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133634—Birefringent elements, e.g. for optical compensation the refractive index Nz perpendicular to the element surface being different from in-plane refractive indices Nx and Ny, e.g. biaxial or with normal optical axis
    • 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
    • G02F1/13725—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 guest-host interaction
    • 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
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/02—Number of plates being 2
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/07—All plates on one side of the LC cell

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)
IT94TO000520A 1993-06-24 1994-06-23 Visualizzatore a cristalli liquidi di tipo twisted nematic drogato con pigmenti ad ampio angolo di visione con fogli di ritardo. IT1268078B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002099642A CA2099642A1 (en) 1993-06-24 1993-06-24 Wide viewing-angle dye-doped tn lcd with retardation sheets

Publications (3)

Publication Number Publication Date
ITTO940520A0 ITTO940520A0 (it) 1994-06-23
ITTO940520A1 ITTO940520A1 (it) 1995-12-23
IT1268078B1 true IT1268078B1 (it) 1997-02-20

Family

ID=4151881

Family Applications (1)

Application Number Title Priority Date Filing Date
IT94TO000520A IT1268078B1 (it) 1993-06-24 1994-06-23 Visualizzatore a cristalli liquidi di tipo twisted nematic drogato con pigmenti ad ampio angolo di visione con fogli di ritardo.

Country Status (6)

Country Link
US (1) US5589965A (enExample)
CA (1) CA2099642A1 (enExample)
DE (1) DE4422218A1 (enExample)
FR (1) FR2707019B1 (enExample)
GB (1) GB2279466B (enExample)
IT (1) IT1268078B1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3974217B2 (ja) * 1997-04-02 2007-09-12 シャープ株式会社 液晶表示パネルおよび液晶表示装置
KR100286762B1 (ko) 1997-06-27 2001-04-16 박종섭 액정 표시 소자
JPH11109335A (ja) * 1997-09-30 1999-04-23 Sharp Corp 液晶表示装置
KR100789864B1 (ko) 2006-11-02 2007-12-28 삼성정밀화학 주식회사 콜레스테릭 액정 고분자, 이를 포함하는 근적외선 차단필름과 근적외선 차단 필터, 및 상기 근적외선 차단 필름또는 필터를 구비하는 표시소자
CN111142300B (zh) * 2020-02-26 2022-09-27 上海天马微电子有限公司 显示装置、显示装置的制作方法以及控制方法
CN118974606A (zh) 2021-03-08 2024-11-15 T·加尔斯蒂安 液晶单元组件和检测增强方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946954A (enExample) * 1972-09-11 1974-05-07
JPS5887538A (ja) * 1981-11-20 1983-05-25 Hitachi Ltd 液晶表示素子
JPS58143305A (ja) * 1982-02-22 1983-08-25 Hitachi Ltd 表示パネル
JPS58186723A (ja) * 1982-04-26 1983-10-31 Seiko Epson Corp 液晶表示装置
US4527864A (en) * 1983-03-29 1985-07-09 Xerox Corporation High contrast liquid crystal display devices
GB2171549B (en) * 1985-02-15 1988-05-18 Citizen Watch Co Ltd Liquid crystal display device
JPS62257123A (ja) * 1986-04-30 1987-11-09 Seiko Epson Corp 投射型表示装置
JPS6352118A (ja) * 1986-08-22 1988-03-05 Toyota Motor Corp 反射型液晶表示素子
JPH02925A (ja) * 1988-03-18 1990-01-05 Sharp Corp 液晶表示装置
JPH01304423A (ja) * 1988-06-02 1989-12-08 Seiko Instr Inc 液晶装置
JPH02143563A (ja) * 1988-11-25 1990-06-01 Fuji Electric Co Ltd サイリスタ
US5184236A (en) * 1990-08-10 1993-02-02 Casio Computer Co., Ltd. Twisted nematic liquid crystal display device with retardation plates having phase axis direction within 15° of alignment direction
US5150235A (en) * 1991-02-04 1992-09-22 Honeywell Inc. Apparatus for improving the angle of view in a liquid crystal display

Also Published As

Publication number Publication date
CA2099642A1 (en) 1994-12-25
FR2707019B1 (enExample) 1998-01-02
GB2279466A (en) 1995-01-04
ITTO940520A1 (it) 1995-12-23
US5589965A (en) 1996-12-31
ITTO940520A0 (it) 1994-06-23
GB9412121D0 (en) 1994-08-10
GB2279466B (en) 1997-11-05
FR2707019A1 (enExample) 1994-12-30
DE4422218A1 (de) 1995-01-05

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