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 Download PDFInfo
- Publication number
- WO1996010768A1 WO1996010768A1 PCT/US1995/012471 US9512471W WO9610768A1 WO 1996010768 A1 WO1996010768 A1 WO 1996010768A1 US 9512471 W US9512471 W US 9512471W WO 9610768 A1 WO9610768 A1 WO 9610768A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- liquid crystal
- compensator
- thin film
- axis
- Prior art date
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
- G02F1/133632—Birefringent elements, e.g. for optical compensation with refractive index ellipsoid inclined relative to the LC-layer surface
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
-
- 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
- G02F1/133636—Birefringent elements, e.g. for optical compensation with twisted orientation, e.g. comprising helically oriented LC-molecules or a plurality of twisted birefringent sublayers
-
- 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
- G02F2413/10—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 with refractive index ellipsoid inclined, or tilted, relative to the LC-layer surface O plate
- G02F2413/105—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 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
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.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31347694A | 1994-09-30 | 1994-09-30 | |
US08/313,476 | 1994-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996010768A1 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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63149624A (ja) * | 1986-12-15 | 1988-06-22 | Seiko Epson Corp | 液晶表示装置 |
EP0423881A1 (fr) * | 1989-10-18 | 1991-04-24 | Koninklijke 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 |
-
1995
- 1995-09-28 WO PCT/US1995/012471 patent/WO1996010768A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63149624A (ja) * | 1986-12-15 | 1988-06-22 | Seiko Epson Corp | 液晶表示装置 |
EP0423881A1 (fr) * | 1989-10-18 | 1991-04-24 | Koninklijke 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)
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 (12)
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 |
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 |
US7105586B2 (en) | 1996-09-17 | 2006-09-12 | Merck Kgaa | Optical retardation firm |
KR100623840B1 (ko) * | 1996-09-17 | 2006-09-12 | 메르크 파텐트 게엠베하 | 광학 지연 필름, 그의 제조 방법, 광학 소자 조합물 및 액정 디스플레이 |
EP0881521A2 (fr) * | 1997-05-27 | 1998-12-02 | Nippon Oil Co., Ltd. | Dispositif d'affichage à cristal liquide |
EP0881521A3 (fr) * | 1997-05-27 | 1999-09-01 | 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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