MX9707629A - Medio de almacenamiento optico de cristal liquido con escala de grises. - Google Patents

Medio de almacenamiento optico de cristal liquido con escala de grises.

Info

Publication number
MX9707629A
MX9707629A MX9707629A MX9707629A MX9707629A MX 9707629 A MX9707629 A MX 9707629A MX 9707629 A MX9707629 A MX 9707629A MX 9707629 A MX9707629 A MX 9707629A MX 9707629 A MX9707629 A MX 9707629A
Authority
MX
Mexico
Prior art keywords
alignment
liquid crystal
alignment layer
optical
gray scale
Prior art date
Application number
MX9707629A
Other languages
English (en)
Other versions
MXPA97007629A (es
Inventor
Wayne M Gibbons
Scott T Schnelle
Paul J Shannon
Shao-Tang Sun
Original Assignee
Alliant Techsystems Inc
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 Alliant Techsystems Inc filed Critical Alliant Techsystems Inc
Publication of MX9707629A publication Critical patent/MX9707629A/es
Publication of MXPA97007629A publication Critical patent/MXPA97007629A/es

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0055—Erasing
    • G11B7/00555—Erasing involving liquid crystal media
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/25—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing liquid crystals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
    • C09K2323/05—Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Liquid Crystal Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Se describe un medio de almacenamiento optico con capacidad de escala de grises que comprende: una pluralidad de sustratos que dan de frente en serie; capas de alineacion dispuestas en uno o ambos lados de los sustratos para dar par o pares de capas de alineacion en donde por lo menos una de las capas de alineacion de cada uno del par o pares de capas de alineacion es una capa de alineacion optica, y en donde la capa o capas de alineacion optica comprende moléculas o porciones anisotropicamente absorbentes; la capa o capas de cristal líquido dispuestas entre el par o pares de capas de alineacion; en donde, cada una de la capa o capas de cristal líquido comprende tres o más regiones de alineacion que tienen tres o más diferentes estados de alineacion; y, en donde los estados diferentes de alineacion están controlados por exposicion de la capa o capas de alineacion optica con luz polarizada de una longitud de onda o longitudes de onda dentro de la banda de absorcion de las moléculas o porciones anisotropicamente absorbentes en el mismo. La invencion se dirige también a los discos compactos, discos compactos borrables, dispositivos de almacenamiento fotográfico y pantallas de almacenamiento.
MXPA/A/1997/007629A 1995-04-06 1996-04-05 Medio de almacenamiento optico de cristal liquidocon escala de grises MXPA97007629A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/417,610 US5846452A (en) 1995-04-06 1995-04-06 Liquid crystal optical storage medium with gray scale
US08417610 1995-04-06

Publications (2)

Publication Number Publication Date
MX9707629A true MX9707629A (es) 1998-06-30
MXPA97007629A MXPA97007629A (es) 1998-10-30

Family

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Also Published As

Publication number Publication date
KR100424738B1 (ko) 2004-07-30
EP0819305B1 (en) 2004-11-17
JP4166272B2 (ja) 2008-10-15
EP0819305A1 (en) 1998-01-21
JPH11503854A (ja) 1999-03-30
KR19980703738A (ko) 1998-12-05
US5846452A (en) 1998-12-08
DE69633856T2 (de) 2005-12-08
CA2217488A1 (en) 1996-10-10
ATE282885T1 (de) 2004-12-15
DE69633856D1 (de) 2004-12-23
WO1996031876A1 (en) 1996-10-10

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Legal Events

Date Code Title Description
FG Grant or registration
PD Change of proprietorship

Owner name: ELSICON, INC.

MM Annulment or lapse due to non-payment of fees