[go: up one dir, main page]

WO2005008324A1 - Dispositif d'affichage a cristaux liquides a couche d'ancrage - Google Patents

Dispositif d'affichage a cristaux liquides a couche d'ancrage Download PDF

Info

Publication number
WO2005008324A1
WO2005008324A1 PCT/IB2004/051181 IB2004051181W WO2005008324A1 WO 2005008324 A1 WO2005008324 A1 WO 2005008324A1 IB 2004051181 W IB2004051181 W IB 2004051181W WO 2005008324 A1 WO2005008324 A1 WO 2005008324A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
photo
crystal display
display device
layer
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.)
Ceased
Application number
PCT/IB2004/051181
Other languages
English (en)
Inventor
Alwin R. M. Verschueren
Dirk J. Broer
Mireille A. Reijme
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2005008324A1 publication Critical patent/WO2005008324A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • G02F1/137—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
    • 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
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133723—Polyimide, polyamide-imide
    • 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
    • G02F1/133703—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by introducing organic surfactant additives into the liquid crystal material
    • 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
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133715—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films by first depositing a monomer
    • 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
    • G02F1/133784—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 rubbing
    • 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
    • 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
    • G02F1/13775—Polymer-stabilized liquid crystal layers

Definitions

  • Liquid crystal display device comprising an anchoring layer
  • the invention relates to a method of manufacturing a liquid crystal display device comprising an orienting layer.
  • the invention also relates to a liquid crystal display device comprising an orienting layer and a liquid crystalline material.
  • Such a liquid crystal display device can be used in a projection display system as a modulator of an impinging light beam with image information.
  • a liquid crystal display device comprises a cell with switchable liquid crystalline material between two flat substrates on which electric conductor tracks may be present which can be used to switch the liquid crystal between an "on” and an "off state in accordance with the desired image information.
  • one or both of the substrates of what is called active matrix display device may additionally be provided with switching elements such as transistors.
  • Orienting layers are f equently applied between a substrate having conductor tracks and the switchable liquid crystalline material to provide the molecules of the liquid crystalline material with a parallel (homogeneous) or perpendicular ( homeotropic) or oblique (tilted) preferred orientation. It is possible to provide an orienting layer on one or on both sides of the cell, i.e. on one or both substrates.
  • LCOS liquid crystal on silicon
  • a projection system comprises a light source for generating a light beam, an LCOS device for modulating the light beam and a projection lens for projecting the modulated light beam on a projection screen. This arrangement can also be used to build a rear projection system in which the projection screen is positioned between the projection lens and the audience.
  • a relatively small LCOS device and a relative large screen are generally used in rear projection systems. This inevitably leads to extremely high light loads on the LCOS device.
  • the known method has the drawback that the stability of the orienting layer is reduced under high light loads.
  • the liquid crystal display device has the drawback that the lifetime is reduced at high light load levels.
  • an object of the invention to provide a method of manufacturing a liquid crystal display device comprising an anchoring layer, which method is relatively simple. This object is achieved by the method as defined in claim 1. It is a further object of the invention to provide a liquid crystal display device which has an improved lifetime. This object is achieved by a liquid crystal display device according to the invention as defined in claim 11.
  • the invention is, inter alia, based on the recognition that a very small fraction, i.e. on a part per million level, of the liquid crystalline molecules degrades in the known liquid crystal display device comprising a cell and two substrates provided with an orienting layer and filled with a liquid crystalline material.
  • This anchoring network has the further advantage that also other problems that are due to poor anchoring can be solved, such as image non-uniformity, rubbing marks and glue contamination near the borders. It is a further advantage that this anchoring layer can be manufactured by the addition of simple steps to the conventional manufacturing process.
  • a method of manufacturing an orienting layer is known from EP506175. In a first step of the method, an orienting layer is formed in the liquid crystal device before filling the cell with the liquid crystalline material. This orienting layer, which is formed from a mixture of a reactive liquid crystalline material and a non-reactive liquid-crystalline material, is provided on both substrates of the cell. A mould is brought into contact with the orienting layer on the substrates.
  • the surface of the mould is flat and has an orienting effect on the mixture.
  • the reactive hquid crystalline material is cured in the orienting state and the substrates are joined together in a cell. Subsequently, the cell is filled with liquid crystalline material.
  • the anchoring layer is not formed between the orienting layer and the liquid crystalline material.
  • a particular advantageous embodiment of the method of manufacturing the liquid crystal display device comprising an anchoring layer according to the invention is defined in claim 2. In this way, it is possible to use a standard process for manufacturing the orienting layer.
  • a further advantageous embodiment of the method of manufacturing the liquid crystal display device comprising an anchoring layer according to the invention is defined in claim 6. This method has the advantage that it can also be applied with inorganic orienting layers. Further advantageous embodiments are defined in the dependent claims.
  • Fig. 1 is a conventional cross-section of a liquid crystal display device
  • Fig. 2 is a cross-section of a portion of a conventional liquid crystal display device
  • Fig. 3 is a cross-section of a portion of a liquid crystal display device with an anchoring layer.
  • Fig. 1 diagrammatically shows a conventional liquid crystal display device.
  • a liquid crystal display was manufactured from two flat substrates, one semiconductor substrate, for example, a silicon substrate 1 and a glass substrate 2.
  • the silicon substrate 1 is provided with an active matrix array comprising row and column conductors and a switching element, for example, a MOS transistor, corresponding to each row and column crossing, and connected to an electrode 3.
  • the glass substrate 2 is provided with a transparent layer of indium tin oxide (ITO) 4 in accordance with a desired pattern.
  • ITO indium tin oxide
  • both substrates 1,2 are provided with orienting layers 5,6.
  • spacers 8 are provided between the substrates 1,2.
  • a network-forming mixture of orienting material was manufactured by adding a photo-initiator to a polyimide for forming the orienting layers and the anchoring layer. Five examples are described in which an anchoring layer is provided on the liquid crystal display device.
  • Example 1 a network-forming mixture with a conventional photo-initiator
  • a network-forming mixture was obtained by adding irgacure 651 (Ciba Geigy) "benzil dimethyl ketal" photo-initiator (0.1-20% weight ratio) to (liquid phase) polyimide AL3046 (JSR).
  • irgacure 651 Ciba Geigy
  • benzil dimethyl ketal photo-initiator (0.1-20% weight ratio)
  • JSR liquid phase polyimide AL3046
  • the nelwork-fo ⁇ ning mixture was obtained by adding the polymer photo-initiator "poly (vinyl benzophenone)" to (liquid phase) AL3046 polyimide (JSR).
  • a polymer photo-initiator has the advantage that the photo-initiator will not evaporate from the polyimide layer during the baking curing process.
  • Example 3 a network-fomiing mixture with a polyimide with photo-initiator functionality
  • the network-forming mixture was obtained by using a kapton polyimide with photo-initiator functionality.
  • Use of polyimide with photo-initiator functionality has the advantage that no phase-separation can occur.
  • Example 4 a network-forming mixture with a mix of standard polyimide with polyimide with photo-initiator functionality
  • the network-forming functionaUty was obtained by adding standard polyimide with polyimide with photo-initiator functionaUty.
  • the two polyimides are chosen to contain related polyimide groups (to avoid phase-separation).
  • the polyimide with photo-initiator functionality can be chosen to be between 0.1 and 99% by weight, and preferably between 20 and 80%.
  • Example 5 a network-forming mixture with a polymer photo-initiator with acrylate functionalized polyimide
  • the network-forming mixture was obtained by adding the polymer photo-initiator "poly (vinyl benzophenone)" to: kapton polyimide with acrylate functionality (for example, ZLI-2650 Merck).
  • polyimide with acrylate functionality has the additional advantage that, in the same UN curing step, also these polyimide groups react and link to the polymer netwerk formed.
  • the network-forming mixture is spin-coated on the substrate, cured and rubbed under standard conditions known to the person skilled in the art. Due to the application of a polymer photo-initiator, a low evaporation and thermal degradation is obtained during the curing process which is executed in a temperature range between 180 and 200 degrees Celsius.
  • a liquid crystalline mixture was manufactured by adding a monomer to the liquid crystalline material, for example, E307.
  • the monomer may be an ordinary isotropic monomer selected from, for example, the class of acrylate monomers.
  • This selection has the advantage that the anchoring of liquid crystalline molecules is enhanced by geometrical factors.
  • the alignment of their mesogenic units with the liquid crystalline molecules also contributes to the anchoring strength, because of additional dispersive intermolecular transactions.
  • the degree of cross-linking depends on the choice of the monomer. After filling and sealing the liquid crystal display device, it is exposed to illumination in the UN/ visible wavelength range to which the polymer photo initiator is sensitive, for example, UN light with an intensity of 5 mW/cm2.
  • Fig. 2 is a cross-section of a portion of a known liquid crystal display device comprising a silicon substrate 1, an electrode 3, an orienting layer 5 and a Hquid crystalline material 7. No anchoring network is present between the molecules of the Hquid crystalline material.
  • FIG 3 is a cross-section of a portion of a Hquid crystal display device comprising a silicon substrate 1, an electrode 3, an orienting layer 5, an anchoring network 10 and a liquid crystalHne material 7.
  • the introduction of the anchoring layer 10 enhances the anchoring of the liquid crystalline molecules 7 to the surface of the orienting layer 5, and, moreover, the anchoring does not solely depend on the interaction with the orienting layer surface.
  • a liquid crystalline mixture was manufactured by adding a photo-initiator, for example, the mentioned irgacure 651 (as can be obtained from Ciba Geigy) "benzil dimethyl ketal" photo-initiator or El 84 (as can be obtained from Ciba Geigy) to the Hquid crystalHne material TL216 (as can be obtained from Merck) in a weight percentage ratio, instead of being dissolved or blended in the polyimide layer.
  • the weight percentage ratio between the photo-initiator and the liquid crystalline material depends on the desired thickness of the anchoring network extending in the liquid crystaUine material.
  • a polymerization, near the interface between the polyimide layer and the liquid crystal is stimulated by selecting an exciting wavelength of the illumination for which the liquid crystalHne material shows a strong absorption, for example, a wavelength between 280nm and 350nm (preferably between 326nm and 350nm).
  • an exciting wavelength of the illumination for which the liquid crystalHne material shows a strong absorption for example, a wavelength between 280nm and 350nm (preferably between 326nm and 350nm).
  • the light in the liquid crystalline material has a small penetration depth, and reactive moieties are only formed near the interface with the polyimide layer.
  • This step has the advantage that it can also be applied in a Hquid crystal display panel with inorganic orienting layers, for example, SiO2.
  • the anchoring enhancement is limited to the area of the transmissive electrodes only.
  • Both examples have the advantage that the aUgnment itself is provided on the Hquid crystal display device by a conventional method of rubbing the polyimide layer, and that the polymerization takes place afterwards and strengthens the alignment brought about by the orienting layer.
  • This method is well suited for the manufacture of anchoring layers in LCOS display panels.
  • the alignment is brought about by polymers that establish aUgnment of the liquid crystalHne material by a photo-chemical treatment. These so-called photo-aHgnment polymers orient Hquid crystalline molecules by an exposure with polarized UN light prior to the step of filling the liquid crystal device.
  • the photo-aHgnment material is of the class of polyvinylcinnamates, polyvinyl coumarines and polymers with chalcone side groups.
  • Example of photo-alignment material polyvinylcinnamate
  • the invention relates to a method of manufacturing a liquid crystal display device comprising an orienting layer, the method comprising the steps of forming the orienting layer on the substrate, adding a monomer to a Hquid crystalHne material and forming an anchoring network in a layer of the Hquid crystalline material near the orienting layer from a mixture of a photo-initiator and the monomer, the monomer being cured in the anchoring network.
  • the anchoring network improves the anchoring of the liquid crystalHne material to the orienting layers, so that the anchoring network keeps the liquid crystalline molecules in place in case the surface of the orienting layers is damaged.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne une méthode de fabrication d'un dispositif d'affichage à cristaux liquides avec une couche d'orientation (5). La méthode comprend une étape de formation de la couche d'orientation (5) sur le substrat (1), une étape d'adjonction d'un monomère à une matière à cristaux liquides (7) et une étape de formation d'un réseau d'ancrage (10) dans une couche de la matière à cristaux liquides, à proximité de la couche d'orientation, à partir d'un mélange d'un photo-initiateur et du monomère, le monomère étant durci dans le réseau d'ancrage. Le réseau d'ancrage améliore l'ancrage de la matière à cristaux liquides par rapport aux couches d'orientation, de sorte que le réseau d'ancrage maintienne en place les molécules des cristaux liquides lorsque la surface des couches d'orientation est endommagée.
PCT/IB2004/051181 2003-07-18 2004-07-09 Dispositif d'affichage a cristaux liquides a couche d'ancrage Ceased WO2005008324A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03102224.7 2003-07-18
EP03102224 2003-07-18

Publications (1)

Publication Number Publication Date
WO2005008324A1 true WO2005008324A1 (fr) 2005-01-27

Family

ID=34072658

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2004/051181 Ceased WO2005008324A1 (fr) 2003-07-18 2004-07-09 Dispositif d'affichage a cristaux liquides a couche d'ancrage

Country Status (1)

Country Link
WO (1) WO2005008324A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018081225A (ja) * 2016-11-17 2018-05-24 Jsr株式会社 液晶配向剤、液晶素子の製造方法、液晶配向膜、液晶素子、重合体

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892392A (en) * 1986-09-04 1990-01-09 U.S. Philips Corporation Picture display cell and method of forming an orientation layer on a substrate of the picture display cell
EP0506175A2 (fr) * 1991-03-26 1992-09-30 Koninklijke Philips Electronics N.V. Dispositif de reproduction d'image à cristal liquide muni d'une couche d'orientation
US5473450A (en) * 1992-04-28 1995-12-05 Sharp Kabushiki Kaisha Liquid crystal display device with a polymer between liquid crystal regions
US5589959A (en) * 1992-09-01 1996-12-31 U.S. Philips Corporation Optical modulation device having a polymer network containing free molecules of a chiral liquid crystalline material
US5859682A (en) * 1995-12-29 1999-01-12 Lg Electronics Inc. Method for manufacturing liquid crystal cell using light
WO2003102045A1 (fr) * 2002-05-31 2003-12-11 Elsicon, Inc. Materiaux polymeres hybrides pour alignement de couches de cristaux liquides

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892392A (en) * 1986-09-04 1990-01-09 U.S. Philips Corporation Picture display cell and method of forming an orientation layer on a substrate of the picture display cell
EP0506175A2 (fr) * 1991-03-26 1992-09-30 Koninklijke Philips Electronics N.V. Dispositif de reproduction d'image à cristal liquide muni d'une couche d'orientation
US5473450A (en) * 1992-04-28 1995-12-05 Sharp Kabushiki Kaisha Liquid crystal display device with a polymer between liquid crystal regions
US5589959A (en) * 1992-09-01 1996-12-31 U.S. Philips Corporation Optical modulation device having a polymer network containing free molecules of a chiral liquid crystalline material
US5859682A (en) * 1995-12-29 1999-01-12 Lg Electronics Inc. Method for manufacturing liquid crystal cell using light
WO2003102045A1 (fr) * 2002-05-31 2003-12-11 Elsicon, Inc. Materiaux polymeres hybrides pour alignement de couches de cristaux liquides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018081225A (ja) * 2016-11-17 2018-05-24 Jsr株式会社 液晶配向剤、液晶素子の製造方法、液晶配向膜、液晶素子、重合体

Similar Documents

Publication Publication Date Title
JP4387276B2 (ja) 液晶表示装置
JP2933805B2 (ja) 高分子分散型液晶複合膜および液晶表示素子並びにその製造方法
US8691349B2 (en) Liquid crystal display panel and fabricating method thereof
EP1038204B1 (fr) Film organique composite a phases separees et son procede de fabrication
CN103109230B (zh) 液晶显示器及其制备方法
US20070206129A1 (en) Liquid crystal display device and method of producing the same
WO1999031545A1 (fr) Panneau d'affichage a cristaux liquides de type dispersion de polymere et son procede de fabrication
TW200428085A (en) Liquid crystal display apparatus and manufacturing method therefor
TW201003258A (en) Liquid crystal display and pixel structure
US6985200B2 (en) Liquid crystal optical element and method for fabricating the same
JP2017531831A (ja) ポリマー含有散乱型垂直配置液晶素子
CN104977758A (zh) 一种适用于psva型液晶显示面板的配向方法
US7477349B2 (en) Bistable nematic liquid crystal device
US9488869B2 (en) Liquid crystal display device and method for manufacturing same
JP2000508710A (ja) Ｐｄｌｃセル
US20100118234A1 (en) Liquid crystal display device and method of aligning liquid crystal molecules utilized thereby
JP4554453B2 (ja) 液晶表示装置とその製造方法
KR970048826A (ko) 액정 표시 소자와 그 제조 방법 및 액정 표시 장치
WO2005008324A1 (fr) Dispositif d'affichage a cristaux liquides a couche d'ancrage
US5539548A (en) Electro-optical device with laminated layers of liquid crystal an light scattering support layers
US7593082B2 (en) Rubbing membrane material and liquid crystal display device using the same
JP2782293B2 (ja) 液晶素子および表示装置、それを用いた表示方法
Lee et al. Fast eight-domain patterned vertical alignment mode with reactive mesogen for a single-transistor-driving
Penterman et al. L‐5: Late‐News Paper: Single‐substrate LCDs Produced by Photo‐enforced Stratification
JP4937787B2 (ja) 液晶表示装置及びその製造方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application