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WO1996010768A1 - Compensateur de chanfrein et vrille ameliorant le rendement dans l'echelle des gris des afficheurs a cristaux liquides nematiques torsades - Google Patents

Compensateur de chanfrein et vrille ameliorant le rendement dans l'echelle des gris des afficheurs a cristaux liquides nematiques torsades

Info

Publication number
WO1996010768A1
WO1996010768A1 PCT/US1995/012471 US9512471W WO1996010768A1 WO 1996010768 A1 WO1996010768 A1 WO 1996010768A1 US 9512471 W US9512471 W US 9512471W WO 1996010768 A1 WO1996010768 A1 WO 1996010768A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
layer
liquid
crystal
axis
angle
Prior art date
Application number
PCT/US1995/012471
Other languages
English (en)
Inventor
Gene C. Koch
Bruce K. Winker
William J. Gunning, Iii
Original Assignee
Rockwell International Corporation
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

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of optical devices, e.g. polarisers, reflectors or illuminating devices, with the cell
    • G02F1/13363Birefringent elements, e.g. for optical compensation
    • G02F1/133632Birefringent elements, e.g. for optical compensation with refractive index ellipsoid inclined relative to the LC-layer surface
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3016Polarising elements involving passive liquid crystal elements
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of optical devices, e.g. polarisers, reflectors or illuminating devices, with the cell
    • G02F1/13363Birefringent elements, e.g. for optical compensation
    • G02F1/133636Birefringent elements, e.g. for optical compensation with twisted orientation, e.g. comprising helically oriented LC-molecules or a plurality of twisted birefringent sublayers
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2413/00Indexing 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
    • G02F2413/10Indexing 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 with refractive index ellipsoid inclined, or tilted, relative to the LC-layer surface O plate
    • G02F2413/105Indexing 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 with refractive index ellipsoid inclined, or tilted, relative to the LC-layer surface O plate with varying inclination in thickness direction, e.g. hybrid oriented discotic LC

Abstract

Un dispositif de compensation de plaque O chenfreinée-vrillée est constitué, selon la présente invention, d'une couche fine de polymère de cristal liquide organique (1210) et éventuellement d'une ou plusieurs couches biréfringentes. La couche mince pour plaque O est un milieu biréfringent dont l'axe optique de symétrie est, en moyenne, orienté en oblique par rapport à la surface de la couche. En restant dans ces limites, l'orientation de l'axe de symétrie optique (1225) de la matière a la possibilité d'évoluer continûment dans le sens de l'axe perpendiculaire à la surface de la couche. Il est possible de fabriquer de telles couches en appliquant à des substrats transparents (1200) des couches de solutions de monomères de cristaux liquides nématiques ou smectiques chiraux par dopage, lesquelles solutions sont à base de solvants inertes. Les solvants de transport subissent ensuite une évaporation, puis les monomères sont polymérisés par irradiation aux UV. Ces dispositifs de compensation peuvent également être constitués de plusieurs couches de matière pour plaque O chanfreinée-vrillée associés à des plans A, des plans C, et de simples plaques O. L'invention concerne également des procédés de fabrication de plaques O chanfreinées-vrillées.
PCT/US1995/012471 1994-09-30 1995-09-28 Compensateur de chanfrein et vrille ameliorant le rendement dans l'echelle des gris des afficheurs a cristaux liquides nematiques torsades WO1996010768A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US31347694 true 1994-09-30 1994-09-30
US08/313,476 1994-09-30

Publications (1)

Publication Number Publication Date
WO1996010768A1 true true WO1996010768A1 (fr) 1996-04-11

Family

ID=23215842

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/012471 WO1996010768A1 (fr) 1994-09-30 1995-09-28 Compensateur de chanfrein et vrille ameliorant le rendement dans l'echelle des gris des afficheurs a cristaux liquides nematiques torsades

Country Status (1)

Country Link
WO (1) WO1996010768A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306016A (en) * 1995-10-06 1997-04-23 Nec Corp Reflective liquid crystal display
WO1998012584A1 (fr) * 1996-09-17 1998-03-26 Merck Patent Gmbh Pellicule de retard optique
EP0881521A2 (fr) * 1997-05-27 1998-12-02 Nippon Oil Co., Ltd. Dispositif d'affichage à cristal liquide
EP0989442A3 (fr) * 1998-09-28 2000-12-27 Rockwell Science Center, LLC Dispositifs de compensation comprenant un film mince à cristaux liquides polymérisés disposés en plan à l'interface air
CN100426079C (zh) 1997-12-26 2008-10-15 日石三菱株式会社 液晶显示器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63149624A (en) * 1986-12-15 1988-06-22 Seiko Epson Corp Liquid crystal display device
EP0423881A1 (fr) * 1989-10-18 1991-04-24 Philips Electronics N.V. Dispositif de reproduction à cristaux liquides
US5184237A (en) * 1990-03-27 1993-02-02 Ricoh Company, Ltd. Super-twisted nematic type liquid crystal display device
EP0529813A2 (fr) * 1991-07-29 1993-03-03 Nippon Oil Co., Ltd. Compensateur pour un afficheur à cristal liquide
EP0576931A2 (fr) * 1992-06-18 1994-01-05 Casio Computer Company Limited Dispositif d'affichage à cristal liquide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63149624A (en) * 1986-12-15 1988-06-22 Seiko Epson Corp Liquid crystal display device
EP0423881A1 (fr) * 1989-10-18 1991-04-24 Philips Electronics N.V. Dispositif de reproduction à cristaux liquides
US5184237A (en) * 1990-03-27 1993-02-02 Ricoh Company, Ltd. Super-twisted nematic type liquid crystal display device
EP0529813A2 (fr) * 1991-07-29 1993-03-03 Nippon Oil Co., Ltd. Compensateur pour un afficheur à cristal liquide
EP0576931A2 (fr) * 1992-06-18 1994-01-05 Casio Computer Company Limited Dispositif d'affichage à cristal liquide

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NR.33799: "Achromatic retardation layers based on anisotropic polymer networks", RESEARCH DISCLOSURE, no. 337, EMSWORTH GB, XP000310119 *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 413 (P - 780)<3260> 2 November 1988 (1988-11-02) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306016A (en) * 1995-10-06 1997-04-23 Nec Corp Reflective liquid crystal display
US5721600A (en) * 1995-10-06 1998-02-24 Nec Corporation Reflective liquid crystal display with optical compensation plates
GB2306016B (en) * 1995-10-06 2000-02-23 Nec Corp Reflective liquid crystal display
WO1998012584A1 (fr) * 1996-09-17 1998-03-26 Merck Patent Gmbh Pellicule de retard optique
US7105586B2 (en) 1996-09-17 2006-09-12 Merck Kgaa Optical retardation firm
US6291035B1 (en) 1996-09-17 2001-09-18 Merck Patent Gesellschaft Mit Optical retardation film
US6899929B2 (en) 1996-09-17 2005-05-31 Merck Patent Gmbh Anisotropic polymer layer
EP0881521A3 (fr) * 1997-05-27 1999-09-01 Nippon Oil Co., Ltd. Dispositif d'affichage à cristal liquide
EP0881521A2 (fr) * 1997-05-27 1998-12-02 Nippon Oil Co., Ltd. Dispositif d'affichage à cristal liquide
CN100426079C (zh) 1997-12-26 2008-10-15 日石三菱株式会社 液晶显示器
EP0989442A3 (fr) * 1998-09-28 2000-12-27 Rockwell Science Center, LLC Dispositifs de compensation comprenant un film mince à cristaux liquides polymérisés disposés en plan à l'interface air

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