WO2004079416A1 - ねじれ傾斜配向フィルムの製造方法、ねじれ傾斜配向フィルムおよびそれを用いた画像表示装置 - Google Patents
ねじれ傾斜配向フィルムの製造方法、ねじれ傾斜配向フィルムおよびそれを用いた画像表示装置 Download PDFInfo
- Publication number
- WO2004079416A1 WO2004079416A1 PCT/JP2004/002798 JP2004002798W WO2004079416A1 WO 2004079416 A1 WO2004079416 A1 WO 2004079416A1 JP 2004002798 W JP2004002798 W JP 2004002798W WO 2004079416 A1 WO2004079416 A1 WO 2004079416A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- film
- alignment
- twisted
- layer
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- 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
-
- 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
- C09K2323/02—Alignment layer characterised by chemical composition
- C09K2323/021—Inorganic, e.g. glass or silicon oxide
-
- 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
- C09K2323/02—Alignment layer characterised by chemical composition
- C09K2323/023—Organic silicon compound, e.g. organosilicon
-
- 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
- C09K2323/03—Viewing layer characterised by chemical composition
-
- 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
- G02F1/133633—Birefringent elements, e.g. for optical compensation using mesogenic materials
-
- 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
- G02F2413/15—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 twisted orientation, e.g. comprising helically oriented LC-molecules or a plurality of twisted birefringent sublayers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
Definitions
- Twisted tilt orientation Use the manufacturing method, twisted tilt orientation. / 'Image display device
- the present invention relates to a method for producing a twisted tilted alignment film having a twisted tilted alignment liquid crystal layer, a twisted tilted alignment film, or a twisted tilted alignment liquid crystal layer.
- the twisted and tilted liquid crystal layer obtained by peeling the substrate and the alignment layer from the twisted and tilted oriented film or the twisted and tilted oriented film produced by the production method of the present invention can be used alone or in combination with other films. .
- it can be used as an optical compensation film such as a retardation film or a viewing angle compensation film, and an optical film such as an elliptically polarizing film obtained by attaching a polarizing plate to the optical compensation film.
- LCDs liquid crystal displays
- ELDs electroluminescent displays
- PDs plasma displays
- FEDs field emission displays
- the twisted inclined alignment film of the present invention is effective for optical compensation of LCD.
- LCDs can display images by applying various control methods to the light emitted from the backlight.
- an optical compensation film is used to improve the reproducibility of color display and the viewing angle characteristics.
- This optical compensation film controls the retardation of the film by stretching a polymer film or coating an organic material, and enables optical compensation according to various demands.
- various widening angle technologies are used in order to capture a narrow viewing angle peculiar to the mode.
- liquid crystal operation modes such as IPS, MVA, and OCB.
- the method of improving the liquid crystal operation mode and the method of using a viewing angle compensation film are simpler and have been actively put into practical use.
- the method using a viewing angle compensation film requires only attaching the optical compensation film integrated with the polarizing plate without changing the liquid crystal panel. This is a technique that can realize the wide viewing angle at a low cost at a low cost.
- Known viewing angle compensating films include those in which discotic liquid crystals are tilted and those in which bar-shaped nematic liquid crystals are tilted. In each case, the liquid crystal polymer is tilt-aligned (for example, see Patent Document 1).
- a tilted alignment liquid crystal can be obtained by using a photo-alignment film for a tilted alignment film using a side-chain type liquid crystal polymer (see, for example, Patent Document 2) or a nematic polymerizable liquid crystal compound exhibiting homeotropic pick (vertical) alignment.
- a method for forming a layer for example, see Patent Document 3 is known.
- an optical axis associated with the refractive index anisotropy of the tilt-aligned liquid crystal is formed along the alignment direction and the tilt direction of the liquid crystal.
- the optical axis of a conventionally used stretched optical compensation film is determined by longitudinal stretching in the 0 ° direction or transverse stretching in the 90 ° direction with respect to the flow direction of the long film.
- the optical axis of the optical compensation film obtained by the orientation of the liquid crystal is determined by the rubbing direction and the coating direction.
- Patent Document 1 JP-A-8-5838
- Patent Document 2 JP-A-2000-327720
- Patent Document 3 JP 2002-214610A
- an object of the present invention is to provide a liquid crystal film that is twisted not only in a tilted orientation but also in a helical shape, and a so-called twisted tilted orientation film, in order to eliminate a display difference in an upper, lower, left, and right perspective directions of an image display device.
- an object of the present invention is to provide a method for producing a twist-tilt alignment film, a twist-tilt alignment film, and a twist-tilt alignment liquid crystal layer, and to provide an optical film and an image display device combined therewith. . Furthermore, by efficiently obtaining a twisted and tilted oriented film, it is easy to adjust the axis angle of the optical axis, and continuous integrated production in a long film state becomes possible.
- the present inventors have conducted intensive studies to solve the above problems, and as a result, have found that the above object can be achieved by the following method, and have completed the present invention.
- an alignment layer containing a vitreous polymer or a silane coupling agent is formed on a substrate, and after rubbing the alignment layer, a chiral agent and a nematic liquid crystal are formed on the rubbed alignment layer.
- a liquid crystal coating liquid containing a photopolymerizable liquid crystal composition that exhibits a hydrophilic property twisting is performed in a helical manner and nematic alignment, and the helical axis is inclined with respect to the normal direction of the substrate surface. This is a method for producing a twisted tilt alignment film having a tilt alignment liquid crystal layer.
- the twisted obliquely oriented film is subjected to an orientation layer and an orientation layer.
- the present invention relates to a method for manufacturing a twist-orientated film for removing a substrate.
- the present invention relates to a twisted and tilted oriented film obtained by the manufacturing method, wherein the twisted and tilted oriented film has an orientation angle of 1 ° or more and less than 180 ° and a front phase difference of nd ( 0), and when the phase difference when tilted ⁇ 30 ° in the direction of the slow axis is A nd (+30) and A nd (-1 30), respectively, (IA nd ( ⁇ 30) ⁇ A nd (+30)
- the present invention may be used as a twisted tilt alignment liquid crystal layer obtained by removing an alignment layer and a substrate from the twist tilt alignment film, and the twist tilt alignment liquid crystal layer or the twist tilt alignment liquid crystal may be used.
- the present invention relates to an optical film obtained by laminating at least one optical layer on a film.
- the present invention also relates to an image display device using the twisted tilted alignment film, the twisted tilted liquid crystal layer, and the optical film. Further, the present invention relates to an image display device manufactured by a process having an in-house manufacturing method.
- the predetermined alignment layer is formed on a substrate, and after rubbing the alignment layer, a liquid crystal coating liquid containing a chiral agent and a photopolymerizable liquid crystal composition is applied.
- a twisted tilted alignment film having a twisted tilted liquid crystal layer having a larger degree of tilt than the conventional product can be stably obtained.
- a twisted tilted alignment film having a twisted tilted liquid crystal layer containing a chiral agent and a photopolymerizable liquid crystal composition can be similarly obtained with a higher tilt than that of a conventional product.
- the twisted orientated film can, for example, widen the viewing angle and compensate for the difference in appearance in image display when viewed obliquely from the top, bottom, left, and right directions of the screen normal direction due to the presence or absence of the optical axis.
- the twisted and tilted oriented film according to the present invention can be suitably used especially for a viewing angle compensation of an image display device.
- FIG. 1 is a cross-sectional view of one embodiment of the obliquely oriented film of the present invention
- Figure 2 is a cross-sectional view of an embodiment of the optical film of the present invention.
- FIG. 3 is a sectional view of an embodiment of the image display device of the present invention.
- the liquid crystal composition is twisted and tilted. It has been found that by forming an oriented liquid crystal layer, a twisted inclined liquid crystal layer having a large inclination of 30 or more and an orientation angle of 1 ° or more and less than 180 ° can be obtained.
- the configuration of the twisted tilted alignment film having the twisted tilted liquid crystal layer according to the present invention is obtained by forming a twisted tilted alignment liquid crystal layer on a substrate having a predetermined alignment layer.
- the twisted tilted alignment film may be used as it is, but the substrate and the alignment layer are separated from the twisted tilted alignment film, and the twisted tilted liquid crystal layer is used alone.
- the adhesive layer or the like to laminate the twisted tilt alignment liquid crystal layer with another optical film. Above all, from the viewpoints of durability and ease of handling, it is preferable to transfer the film to another optical layer by using the force used as the twisted orientated film.
- the twisted tilt alignment of the twisted tilted liquid crystal layer according to the present invention requires that the tilt angle of the nematic liquid crystal molecules be 1 ° or more and 85 ° or less from the normal direction of the substrate surface, and the tilt angle Is 30 or more.
- FIG. 1 shows an embodiment of the twisted and tilted oriented film of the present invention.
- an alignment layer 7 and a twisted tilted liquid crystal layer 3 are laminated on a substrate 2.
- substrates made of various materials such as polymer, glass, and metal can be used, but a polymer film is preferable from the viewpoint of easy handling, and a glassy polymer is further provided thereon.
- a layer provided with an alignment layer containing a silane coupling agent is used.
- the thickness of the substrate, including the orientation layer is usually about 10 to: L000 ⁇ .
- the polymer film is not particularly limited as long as it does not cause a problem in the surface state or durability of the film and does not have any influence on the alignment layer due to the heating temperature at which the photopolymerizable liquid crystal composition is dried and aligned.
- polyester polymers such as polyethylene terephthalate and polyethylene naphthalate, cenorellose polymers such as diacetylinoresenorelose, triacetinoresenorelose and the like, polycarbonate polymers, polymethyl methacrylate, etc.
- a film made of a transparent polymer film such as an acryl-based polymer.
- styrene-based polymers such as polystyrene, atarilononitrile and styrene copolymer, polyethylene, Films made of transparent polymers such as polypropylene, polyolefins having a cyclic or norpolenene structure, olefin polymers such as ethylene / propylene copolymers, amide polymers such as vinyl chloride polymers and aromatic polyamides are also included.
- imid-based polymers sulfone-based polymers, polyethersulfone-based polymers, polyetherenoetheretherketone-based polymers, polyphenylene / sulfide-based polymers, vinyl alcohol-based polymers, vinylidene chloride-based polymers, and vinyloleptyranole-based polymers
- a film made of a transparent polymer such as an arylate-based polymer, a polyoxymethylene-based polymer, an epoxy-based polymer, or a blend of the aforementioned polymers.
- polymer finolems such as triacetyl cellulose, polyethylene terephthalate, polycarbonate, and nonolevonolenene polyolefin, which have high hydrogen bonding properties and can be used as a light-transmitting film, are preferably used.
- a triacetylcellulose film is particularly preferable because it has a small optical anisotropy and can be used as a twisted tilt alignment film without being transferred to another optical layer even when the alignment layer is formed on the film.
- twist-tilt alignment film is manufactured using such a substrate, the twist-tilt alignment liquid crystal layer can be used without being transferred to another optical layer.
- a polymer film include Zeonor (trade name, manufactured by Nippon Zeon), Zeonex (trade name, manufactured by Nippon Zeon), and Arton (trade name, manufactured by JSR Corporation).
- the orientation layer provided on the substrate it is necessary to provide a thin film layer of a substance containing a vitreous polymer or a silane coupling agent.
- This alignment layer does not necessarily need to be present as a thin film layer as long as it has substantially the same effect.
- a substance containing a vitreous polymer or a silane coupling agent may be applied to the substrate surface or in the substrate, or to photopolymerization. May be contained in the crystalline liquid crystal composition.
- a solution for forming the alignment layer is applied by a roll coating method, a gravure coating method, a spin coating method, a bar coating method, and the like, and dried at room temperature and a drying furnace.
- the thickness of the alignment layer is preferably about 0.04 to 2 ⁇ m, more preferably about 0.05 to 0.2 xm.
- metal alkoxides especially metal silicon alkoxide sols are awarded.
- the metal alkoxide is usually used as an alcohol-based solution. After the solution is applied to the substrate, the solvent is removed, and the sol-gel reaction is promoted by heating to form a transparent glassy polymer film on the substrate.
- a metal silicon alkoxide gel layer is formed from the metal silicon alkoxide sol.
- a glassy polymer alignment layer formed by a 2% solution of ethyl silicate in isopropyl alcohol and butanol Coldcoat p: manufactured by Colcoat
- Colcoat p manufactured by Colcoat
- silane coupling agent a commercially available silane coupling agent composed of an organic substance having silicon and a linear alkyl group can be used without any limitation.
- an acryloxy group or a methacrylic group is used.
- Those having a hydroxyl group are preferred, and for example, those comprising ataryloxypropyltrimethoxysilane can be particularly preferably used.
- a method of rubbing in one direction using a rubbing roll wound with cloth or skin material made of fine fibers such as rayon or cotton can be used.
- the photopolymerizable liquid crystal composition is a liquid crystal compound having at least one unsaturated double bond such as an atalyloyl group or a methacryloyl group as a photopolymerizable functional group, and a nematic liquid crystal compound is used.
- a photopolymerizable liquid crystal composition acrylate / methacrylate composed of a monomer unit represented by the following formula 1 can be exemplified.
- R 1 represents a hydrogen atom or a methyl group
- a represents a positive integer of 1 to 6
- X 1 represents one C ⁇ 2 — group or one O CO— group
- R 2 represents a cyano group
- 1 carbon atom
- b represents an integer of 1 or 2, and represents an alkoxy group, a phenolic group or an alkyl group having 1 to 6 carbon atoms.
- photopolymerizable liquid crystal composition having improved durability, one having two or more photopolymerizable functional groups is preferable.
- a photopolymerizable liquid crystal composition a crosslinked nematic liquid crystal monomer represented by the following formula 2 can be exemplified.
- H 2 C CR— C0 2 -f-CH 2 ) -0-A— X— B— X ⁇ D-0 ⁇ CH 2 to 0 2
- C-CR CH 2
- R is a hydrogen atom or a methyl group
- a and D are each independently a 1,4-phenylene group or a 1,4-cyclohexylene group
- X is each independently a C OO— group.
- B is 1,4-phenylene group, 1,4-cyclohexylene group, 4,4'-biphenylene group or 4,4'-bicyclohexylene group
- m and n each independently represent an integer of 2 to 6.
- the terminal “H 2 C CR—C 0 2— ”
- the photopolymerizable liquid crystal composition can be made into a liquid crystal state by heat treatment, for example, by exhibiting a nematic liquid crystal phase and polymerizing or crosslinking to improve the durability.
- a photopolymerization initiator it is preferable to add a photopolymerization initiator to the liquid crystal coating liquid containing the photopolymerizable liquid crystal composition.
- Various photopolymerization initiators can be used without any particular limitation.
- the photopolymerization initiator include, for example, a filter manufactured by Ciba Specialty Chemicals. Gacure (Irgacure) 907, 184, 651, and 369 can be cited.
- the amount of the photopolymerization initiator to be added is such that the orientation is not disturbed in consideration of the type and the amount of the photopolymerizable liquid crystal composition. Usually, the amount is preferably about 0.5 to 30 parts by weight, particularly preferably 3 to 15 parts by weight, per 100 parts by weight of the photopolymerizable liquid crystal composition.
- the chiral agent to be added to the vertical alignment liquid crystal composition is not particularly limited as long as it has at least one polymerizable functional group, has an optically active group, and does not disturb the alignment of the liquid crystal composition. It can be used without.
- As the polymerizable functional group an atalyloyl group and a methacryloyl group are preferable.
- the chiral agent is not limited to the presence or absence of liquid crystallinity, but those having cholesteric liquid crystallinity can be preferably used as a chiral agent for forming a helically twisted nematic alignment.
- the pitch for determining the selective reflection wavelength varies depending on the amount of the chiral agent added.
- the amount of the chiral agent to be added is about 0.01 to 50 parts by weight, preferably about 0.05 to 15 parts by weight, based on 100 parts by weight of the vertical alignment liquid crystal composition.
- As the torsional force possessed by the chiral agent preferably 1 X 10- s ⁇ l X 1 0- 2, 5 XI 0- 6 ⁇ : and more preferably LX 1 0 one 3.
- the twist angle is adjusted by appropriately adjusting the thickness of the liquid crystal layer, the amount of the chiral agent added, and the torsional force of the chiral agent within the above range.
- the orientation angle is preferably 1 ° or more and less than 180 °, and more preferably 20 ° or more and 90 ° or less. Further, it is most practically preferable that the angle is 35 ° or more and 75 ° or less.
- the orientation angle is less than 1 ° (the state in which the nematic liquid crystal is not twisted), the effect of compensating the above-mentioned optical axis cannot be expected, and if it is more than 180 °, the in-plane optical axis will not be compensated. Is difficult to control.
- a solution coating method using a solution obtained by dissolving a liquid crystal composition in a solvent or a method of melting and applying a liquid crystal composition by melting the liquid crystal composition may be used.
- the method of applying a solution on a substrate by a solution application method is preferable.
- the solvent used when preparing the solution includes a photopolymerizable liquid crystal composition, a substrate Although it depends on the type of alignment film and the type of alignment film, it cannot be said unconditionally. Normally, it is formed by chloroforms such as dichloromethane, dichloromethane, dichloroethane, tetrachloroethane, trichloroethylene, tetrachloroethylene, and benzene.
- chloroforms such as dichloromethane, dichloromethane, dichloroethane, tetrachloroethane, trichloroethylene, tetrachloroethylene, and benzene.
- Hydrocarbons phenols such as phenol, parachlorophenol, aromatic hydrocarbons such as benzene ', toluene', xylene, methoxybenzene, 1,2-dimethoxybenzene, acetone, Ethyl sulphate, tert-butyl alcohol, glycerin, ethylene glycol, triethylene glycol cornole, ethylene glycol corn monomethinole ethere, ethylenglycol monomethyole melamine, ethynolecenoresolenole, butylcellosolve, 2 monopyrrolidone, N-methyl-1-pyrrolidone, Lysine, it can be Toryechiruamin, Te Jewishi Dorofuran, dimethylformamide ⁇ Mi de, Jimechiruase Toami de, Jimechirusu sulfoxide, Asetoetoriru, butyronitrile, be used, for example carbon disulfide.
- the thickness of the twisted tilted liquid crystal layer after drying and alignment of the coated liquid crystal coating liquid is about 1 to 10 / zm. If the thickness of the twisted tilt alignment liquid crystal layer is too thick, alignment and drying are uneven, and if it is too thin, sufficient optical compensation characteristics cannot be obtained. In addition, as the thickness of the twisted and tilted liquid crystal layer according to the present invention is larger, a liquid crystal layer having a larger tilt angle and a larger twist angle is obtained, and the degree of freedom in optical design is increased. However, as described above, if the thickness is too large, a problem is likely to occur. Therefore, it is preferable to laminate two or more layers having an appropriate thickness.
- a method in which a liquid crystal coating liquid is applied on the fixed torsional tilt alignment liquid crystal layer, followed by drying and fixing can be preferably used.
- This step is repeated when three or more layers are stacked, and the number of layers is not particularly limited. However, when the alignment regulating force of the twisted tilt alignment liquid crystal layer fixed as described above is used, 4 is used. It is preferable that the number of layers be equal to or less than the number of layers. If it is necessary to precisely control the thickness of the torsionally tilted liquid crystal layer, it is almost determined at the stage of coating on the substrate. Therefore, control of the solution concentration, the thickness immediately after coating (before drying), etc. You need to pay special attention.
- a liquid crystal coating solution adjusted to a desired concentration using the solvent is coated on a rubbed substrate.
- a coating method for example, a roll coating method, a gravure coating method, a spin coating method, a bar coating method, or the like can be adopted.
- the solvent is removed and a liquid crystal layer is formed on the substrate.
- the conditions for removing the solvent are not particularly limited, as long as the solvent can be substantially removed, and the liquid crystal layer does not flow or run off. Usually, the solvent is removed by drying at room temperature, drying in a drying oven, or heating on a hot plate.
- the liquid crystal layer formed on the substrate is brought into a liquid crystal state and oriented.
- heat treatment is performed so as to be in a liquid crystal temperature range and the liquid crystal is aligned in a liquid crystal state.
- the heat treatment can be performed by the same method as the above-described drying method.
- the heat treatment temperature varies depending on the type of liquid crystal coating liquid, alignment film and substrate to be used, and cannot be specified unconditionally, but is usually in the range of 60 to 300 ° C, preferably 70 to 200 ° C. Do it.
- the heat treatment time cannot be generally specified, but is usually selected in the range of 10 seconds to 2 hours, preferably in the range of 20 seconds to 30 minutes. If the time is shorter than 10 seconds, the alignment may not be sufficiently formed. If the time is longer than 2 hours, the alignment state may not be maintained.
- the orientation state needs to be fixed.
- the method of immobilization include cooling and curing to a temperature lower than the glass transition temperature and polymerization and curing by light irradiation, and one or both of them are appropriately used depending on the characteristics of the vertical alignment liquid crystal composition.
- cooling curing is effective for polymers
- polymerization curing by light irradiation is effective for polymerizable monomers.
- Cooling and hardening for fixing can be performed by taking out the twisted and tilted oriented film after the heat treatment from the heating atmosphere in the heat treatment operation to room temperature. Also, forced cooling such as air cooling or water cooling may be performed. The orientation of the twisted tilted liquid crystal layer is fixed by cooling it below the glass transition temperature.
- light that polymerizes or crosslinks may be used in accordance with the properties of the photopolymerizable liquid crystal composition, but ultraviolet irradiation is generally used.
- the ultraviolet irradiation conditions are preferably, but not limited to, an inert gas atmosphere in order to sufficiently promote the reaction.
- a high pressure mercury ultraviolet lamp having an irradiation of about 8 0 ⁇ 1 6 0 m WZ cm 2 is typically used.
- Metahalide UV Different types of lamps, such as lamps and incandescent tubes, can also be used.
- the thus obtained twisted tilted alignment film having a twisted tilted alignment layer may be used as it is, but the substrate having the alignment layer is peeled from the twisted tilted alignment film, and the twisted tilted liquid crystal layer is transferred to another optical layer. Alternatively, only the tilt alignment liquid crystal layer may be used.
- an adhesive layer is applied to one or both sides of the optical layer or the twist tilt alignment liquid crystal layer side of the twist tilt alignment film using an adhesive or an adhesive. Then, the twisted tilt alignment liquid crystal layer and the optical layer are bonded together. Thereafter, the film is peeled off from the twist-tilt alignment film at the interface between the alignment layer and the twist-tilt alignment liquid crystal layer, and is used as a twist-tilt alignment film in a state where the optical layer, the adhesive layer, and the twist-tilt alignment liquid crystal layer are laminated.
- each of the optical layer, the adhesive layer, and the twisted tilt alignment liquid crystal layer may be one layer or two or more layers, and can be appropriately laminated.
- FIG. 2 shows an embodiment of an optical film using the twisted and tilted oriented film of the present invention.
- the optical film 10 of the present embodiment is manufactured by peeling the substrate 2 and the alignment layer 7 from the twisted tilted alignment film 1 of FIG. 1 and laminating the optical layer 5 on both surfaces via the adhesive layer 4.
- the adhesive layer can be used without limitation as long as the required optical properties are not affected.
- an adhesive or pressure-sensitive adhesive having a base polymer of acryl-based polymer, silicone-based polymer, polyester, polyurethane, polyamide, polyether, fluorine-based or rubber-based polymer can be appropriately selected and used.
- these forms are not particularly limited, and various adhesives or pressure-sensitive adhesives such as a solvent type, a dispersion type, and an emulsion type can be used.
- an acrylic solvent-based pressure-sensitive adhesive which is excellent in transparency, weather resistance, and the like in the twisted orientated film of the present invention.
- the formation of the adhesive layer can be performed by an appropriate method.
- an adhesive solution of about 10 to 40% by weight is prepared by dissolving or dispersing a base polymer or a composition thereof in a solvent composed of a single substance or a mixture of appropriate solvents such as toluene and ethyl acetate.
- a method in which it is directly attached to the liquid crystal layer by an appropriate development method such as a casting method or a coating method, or an adhesive layer made of an adhesive is formed on a separator subjected to a mold release treatment, and then formed.
- a method of transferring onto the liquid crystal layer is exemplified.
- the adhesive layer includes, for example, fillers, pigments, coloring agents, and oxidizing resins made of natural or synthetic resins, particularly, tackifying resins, glass fibers, glass beads, metal powders, and other inorganic powders. It may contain an additive such as an inhibitor added to the pressure-sensitive adhesive layer. Further, an adhesive layer or the like containing fine particles and exhibiting light diffusion properties may be used.
- the optical layer for transferring the twisted tilted liquid crystal layer according to the present invention is not particularly limited as long as it satisfies the required optical characteristics and supports the twisted tilted liquid crystal layer.
- Image display such as polarizers, reflectors, transflectors, diffusers, retardation films (including wave plates ( ⁇ plates) such as 1/2 and 1Z4), viewing angle compensation films, brightness enhancement films or cholesteric liquid crystal films
- polarizers such as polarizers, reflectors, transflectors, diffusers, retardation films (including wave plates ( ⁇ plates) such as 1/2 and 1Z4), viewing angle compensation films, brightness enhancement films or cholesteric liquid crystal films
- the cholesteric liquid crystal layer (cholesteric liquid crystal film) having the function of a 1Z4 wavelength plate in the twisted tilted liquid crystal layer according to the present invention and having a circularly polarized light separating function having a selective reflection wavelength in the visible light region.
- a brightness enhancement film By laminating with, a brightness enhancement film can be obtained, and by laminating a polarizing plate on the film, it can be preferably used for an image display device.
- the polarizing plate, other optical layers, or the retardation layer of the present invention are subjected to hard coating treatment, antireflection treatment, surface treatment for sticking prevention, diffusion or antiglare, and visual angle compensation.
- a film having an aligned liquid crystal layer is also an example of the optical layer.
- the torsional tilt alignment film having the torsional tilt alignment liquid crystal layer prepared as described above measures the phase difference value when tilted ⁇ 30 ° in the front and slow axis directions, and determines the tilt by the following equation.
- Slope (I A n d (-30) -A n d (+ 30)
- the degree of inclination of the twisted orientated film according to the present invention may be 30 or more, preferably 50 or more, and more preferably 70 or more.
- the upper limit is not particularly limited, but is preferably 500 or less, and more preferably 300 or less for practical use. If the inclination is less than 30, the optically compensable range in the oblique direction is too narrow, which is not practically sufficient. If the inclination is more than 500, uniformity of quality can be obtained by the method according to the present invention. Nikure,
- phase difference values can be measured using various types of measuring devices.
- an automatic birefringence meter Each value can be measured by using (for example, Oji Scientific Instruments: KOBRA-21 ADH).
- the polarizing plate that can be used as the optical layer include, for example, a suitable adhesive layer made of a vinyl alcohol-based polymer or the like on one or both sides of a polarizer made of a dichroic substance-containing polyvinyl alcohol-based film or the like. One in which a protective sheet is adhered through the adhesive.
- Examples of the method for producing a polarizer include a method in which a polyvinyl alcohol-based film is dyed with iodine and then stretched to orient the iodine.
- polarizers can be used without any particular limitation.
- hydrophilic polymer films such as polyvinyl alcohol-based film, partially formalized polyvinyl alcohol-based film, ethylene-vinyl acetate copolymer-based partially saponified film, and dichromatic dyes such as iodine dichroic dye Uniaxially stretched by adsorbing a reactive substance, or a polyene-based oriented film such as a dehydrated product of polyvinyl alcohol or a dehydrochlorinated product of polyvinyl chloride.
- a polarizer comprising a dichroic substance such as a polyvinyl alcohol film and iodine is preferred.
- the thickness of these polarizers is not particularly limited, but is generally about 5 to 80 m.
- the polarizer may contain boric acid, zinc sulfate, zinc chloride or the like, if necessary, and can be immersed in an aqueous solution of potassium iodide or the like.
- a material for forming the protective screen 1 provided on one or both surfaces of the polarizer a material having excellent transparency, mechanical strength, heat stability, moisture shielding property, isotropy and the like is preferable.
- polyethylene terephthalate polyethylene naphthalate, etc.
- Polyesterol-based polymers cenorellose-based polymers such as diacetyl / resenololose and triacetinol-cellulose, atalinole-based polymers such as polymethinolemethallate, styrene-based polymers such as polystyrene and acrylonitrile-styrene copolymer (AS resin)
- AS resin acrylonitrile-styrene copolymer
- polyolefin polymers such as polyethylene, polypropylene, polyolefin having a cyclic or norbornene structure, ethylene / propylene copolymers, amide polymers such as vinyl chloride polymers, nylon and directional group polyamides, Imid polymer, sunolefon polymer, polyethenoresnolefone polymer, polyethenolethenole ketone polymer, polyphenylene snolide polymer, vinylinolenocone polymer, vinylidene chloride polymer, butylbutyral polymer Polymers, arylate-based polymers, polyoxymethylene-based polymers, epoxy-based polymers, blends of the above-mentioned polymers, and the like are also examples of polymers forming the protective sheet.
- the protective sheet may be formed as a cured layer of a thermosetting resin such as an acrylic, urethane, acrylurethane, epoxy, or silicone resin, or an ultraviolet curable resin.
- a polymer film described in JP-A-2001-343529 for example, (A) substitution on the side chain and / or And (B) a resin composition containing a thermoplastic resin having a substituted or Z- or unsubstituted phenyl group and a -tolyl group in a side chain.
- a resin composition containing a thermoplastic resin having a substituted or Z- or unsubstituted phenyl group and a -tolyl group in a side chain is a film of a resin composition containing an alternating copolymer of isobutene and N-methylmaleide and an acrylonitrile'styrene copolymer.
- a film made of a mixed extruded product of the resin composition or the like can be used.
- the thickness of the protective sheet is not particularly limited, it is generally 500 / im or less, preferably 1 to 300 ⁇ m. In particular, it is more preferable to be 5 to 200 ⁇ m. In addition, it is preferable that the surface of the protective film is subjected to saponification treatment with an adhesive or the like in view of polarization characteristics and durability.
- the transparent protective film with a retardation value in the film thickness direction of 90 to +75 nm It is preferably used. By using such a retardation value (Rth) in the thickness direction of ⁇ 90 nm to +75 nm, the coloring (optical coloring) of the polarizing plate caused by the transparent protective film can be almost eliminated. Can be.
- the retardation value (Rth) in the thickness direction is more preferably 180 to 160 nm, and particularly preferably 170 to +45 nm.
- the protective sheet may be one in which two sheets to be bonded to both sides of the polarizer have different characteristics.
- the characteristics are not limited to these, but include, for example, thickness, material, light transmittance, tensile elasticity, and the presence or absence of an optical layer.
- the polarizing plate can be used after being subjected to various processes in practical use.
- the processing method is not particularly limited to this.
- the surface of the transparent protective film on which the polarizer is not bonded may be hard-coated or reflected.
- Examples of such a method include a surface treatment for prevention treatment, prevention of stinging, diffusion or antiglare, and a method of laminating a liquid crystal layer for viewing angle compensation or the like.
- twisted tilt alignment films used to form liquid crystal display devices such as reflectors, transflectors, retardation plates (including wavelength plates ( ⁇ plates) such as 1/2 and 1Z4), and viewing angle compensation films
- ⁇ plates wavelength plates
- One or two or more layers can be attached.
- the hard coat treatment is performed for the purpose of preventing the film surface such as a polarizing plate from being damaged.
- a cured film excellent in hardness and sliding properties of an appropriate ultraviolet curable resin such as an acrylic or silicone resin is transparent. It can be formed by a method of adding to the surface of the protective film.
- the anti-reflection treatment is performed for the purpose of preventing the reflection of external light on the surface of the change plate, and can be achieved by forming an anti-reflection film or the like according to the related art.
- the anti-stating treatment is performed for the purpose of preventing adhesion to the adjacent layer.
- the anti-glare treatment is performed for the purpose of preventing external light from being reflected on the surface of the polarizing plate and hindering the permeation of light transmitted through the polarizing plate.
- the transparent protective film can be formed by imparting a fine uneven structure to the surface of the transparent protective film by an appropriate method such as a roughening method using an embossing method or a method of blending transparent fine particles.
- the fine particles contained in the formation of the surface fine unevenness include silica, alumina, titania, zirconia, tin oxide, indium oxide, cadmium oxide, and antimony oxide having an average particle size of 0.5 to 5 ⁇ 0 ⁇ .
- Transparent fine particles such as inorganic fine particles which may be conductive and organic fine particles formed of a crosslinked or uncrosslinked polymer or the like are used.
- the amount of the fine particles used is generally about 2 to 70 parts by weight with respect to 100 parts by weight of the transparent resin forming the fine surface irregularity structure, and 5 to 50 parts by weight. Parts by weight are preferred.
- the anti-glare layer may also serve as a diffusion layer (viewing angle expanding function, etc.) for expanding the viewing angle by diffusing light transmitted through the polarizing plate.
- optical layers such as the anti-reflection layer, the anti-stating layer, the diffusion layer and the anti-glare layer can be provided on the transparent protective film itself, or separately provided separately from the transparent protective film. it can.
- the bonding treatment between the polarizer and the transparent protective film is not particularly limited.
- This adhesive layer can be formed as a coating and drying layer of an aqueous solution, and in preparing the aqueous solution, other additives and a catalyst such as an acid can be blended as necessary.
- the reflective polarizing plate is a polarizing plate provided with a reflective layer, and is used to form a liquid crystal display device or the like that reflects and reflects incident light from the viewing side (display side). It has the advantage that the built-in light source such as a light can be omitted, and the liquid crystal display device can be made thinner.
- the reflective polarizing plate can be formed by an appropriate method such as a method in which a reflective layer made of metal or the like is provided on one surface of the polarizing plate via a transparent protective layer or the like, if necessary.
- the reflective polarizing plate include, as necessary, a transparent protective film treated with a mat and a reflective layer formed by attaching a foil made of a reflective metal such as aluminum to a vapor-deposited film on one surface. Is raised. Further, the transparent protective film contains fine particles. Then, a structure having a fine uneven structure on the surface and a reflective layer having a fine uneven structure formed thereon is also exemplified.
- the reflective layer having the above-described fine uneven structure has an advantage that the incident light is diffused by irregular reflection to prevent a directional glare and to suppress uneven brightness. Further, the transparent protective film containing fine particles has an advantage that the incident light and its reflected light are diffused when transmitted through the film, and the unevenness in brightness can be further suppressed.
- the reflective layer having a fine uneven structure reflecting the fine uneven structure on the surface of the transparent protective film is formed by, for example, depositing a metal by an appropriate method such as a vacuum evaporation method, an ion plating method, a sputtering method, or a plating method. It can be carried out by a method of directly attaching to the surface of the transparent protective layer.
- the reflection plate can be used as a reflection sheet or the like in which a reflection layer is provided on an appropriate film according to the transparent film, instead of the method of directly applying the reflection plate to the transparent protective film of the polarizing plate.
- the reflective layer is usually made of metal, its use in the state where the reflective surface is covered with a transparent protective film, a polarizing plate or the like is effective in preventing the decrease in reflectance due to oxidation and, in addition, maintaining the initial reflectance for a long time. It is preferable because it avoids separately providing a protective layer.
- the transflective polarizing plate can be obtained by forming a transflective reflective layer such as a half mirror that reflects and transmits light on the reflective layer in the above.
- the transflective polarizing plate is usually provided on the back side of the liquid crystal cell.
- a liquid crystal display device When a liquid crystal display device is used in a relatively bright atmosphere, an image is displayed by reflecting incident light from the viewing side (display side). In a relatively dark atmosphere, a liquid crystal display device of a type that displays an image using a built-in light source such as a backlight built in the back side of a transflective polarizing plate can be formed.
- the transflective polarizing plate can save the energy of using a light source such as a backlight in a bright atmosphere, and can form a liquid crystal display device that can be used with a built-in light source even in a relatively bright atmosphere.
- a retardation plate is further laminated on the polarizing plate, an elliptically polarizing plate or a circularly polarizing plate is obtained.
- a phase difference plate or the like is used.
- a so-called quarter-wave plate (also referred to as a Z4 plate) is used as a phase difference plate for converting linearly polarized light into circularly polarized light or converting circularly polarized light into linearly polarized light.
- One A / 2 wavelength plate (also called ⁇ 2 plate) is usually used to change the polarization direction of linearly polarized light.
- the elliptically polarizing plate compensates (prevents) the coloring (blue or yellow) caused by the birefringence of the liquid crystal layer of the super twisted nematic (STN) type liquid crystal display device, and is effective in the case of the black-and-white display without the coloring.
- the one in which the three-dimensional refractive index is controlled is preferable because coloring that occurs when the screen of the liquid crystal display device is viewed from an oblique direction can be compensated (prevented).
- the circularly polarizing plate is effectively used, for example, when adjusting the color tone of an image of a reflection type liquid crystal display device in which an image is displayed in a uniform manner, and also has an antireflection function.
- the retardation plate examples include a birefringent film obtained by uniaxially or biaxially stretching a polymer material, and a liquid crystal alignment film.
- the retardation plate may have an appropriate retardation according to the intended use, for example, various wavelength plates or a plate for the purpose of compensating coloring or viewing angle due to birefringence of the liquid crystal layer, A structure in which two or more kinds of retardation plates are laminated to control optical characteristics such as a retardation may be used.
- the stretching treatment can be performed by, for example, a roll stretching method, a long gap stretching method, a tenter stretching method, a tubular stretching method, or the like.
- the stretching ratio is generally about 1.1 to 3 times in the case of uniaxial stretching.
- the thickness of the retardation plate is not particularly limited, but is generally from 10 to 200 ⁇ , preferably from 20 to L 0 / im.
- polymer material examples include polyvinyl alcohol, polyvinyl butyral, polymethinolebininoleatenore, polyhydroxyxenotinolate acrylate, hydroxyxinetinoresenorelose, hydroxypropinoresenorelose, Methynoresenorelose, polycarbonate, polyarylate, polysnolephone, polyethylene terephthalate, polyethylene naphthalate, polyethenoresnolephone, polyphenylene snolide, polyphenylene oxide, polyallylsulfone, polyvinyl alcohol, polyamide, Examples include polyimide, polyolefin, polychlorinated vinyl, cellulosic polymers, and various binary and tertiary copolymers, graft copolymers, and blends thereof. These polymer materials become oriented products (stretched films) by stretching or the like.
- liquid crystal polymer examples include a conjugated linear element that imparts liquid crystal orientation.
- main chain and side chain in which a mesogen is introduced into the main chain and side chain of the polymer.
- specific examples of the main chain type liquid crystal polymer include a structure in which a mesogen group is bonded at a spacer portion imparting flexibility, such as a nematic-aligned polyester-based liquid crystal polymer and a discotic polymer.
- Cholesteric polymers are examples.
- the side-chain type liquid crystalline polymer include polysiloxane, polyatalylate, polymetharylate, or polymalonate as the main skeleton, and nematic alignment via a spacer composed of a conjugated atomic group as a side chain. And those having a mesogen moiety consisting of a donative para-substituted cyclic compound unit.
- These liquid crystal polymers are, for example, those obtained by rubbing the surface of a thin film of polyimide or polyvinyl alcohol formed on a glass plate, or those obtained by obliquely depositing silicon oxide. This is performed by developing the solution and performing heat treatment.
- the above-mentioned elliptically polarizing plate or reflection type elliptically polarizing plate is obtained by laminating a polarizing plate or a reflection type polarizing plate and a retardation plate in an appropriate combination.
- Such an elliptically polarizing plate or the like can also be formed by sequentially and separately laminating a (reflection type) polarizing plate and a retardation plate in a manufacturing process of a liquid crystal display device so as to form a combination.
- an optical film such as an elliptically polarizing plate has advantages in that it is superior in quality stability, lamination workability, and the like, and can improve the production efficiency of a liquid crystal display device and the like.
- the viewing angle compensation film is a film for widening the viewing angle so that the image of the liquid crystal display device can be seen relatively clearly even when viewed from a slightly oblique direction, not perpendicular to the screen.
- a viewing angle compensating retardation plate include, for example, a retardation plate, an alignment film such as a liquid crystal polymer, and a transparent substrate on which an alignment layer such as a liquid crystal polymer is supported.
- a common retardation plate uses a birefringent polymer film uniaxially stretched in the plane direction, whereas a retardation plate used as a viewing angle compensation film has a biaxially stretched biaxially oriented polymer film.
- Two directions such as a polymer film with refraction and uniaxially stretched in the force plane and also in the thickness direction, such as a birefringent polymer or an obliquely oriented film with a controlled refractive index in the thickness direction.
- a stretched film or the like is used.
- a heat-shrinkable film is adhered to a polymer film, and the polymer film is stretched under the action of the shrinkage force caused by heating.
- the raw material polymer of the retardation plate the same polymer as that described in the previous retardation plate is used to prevent the coloring etc.
- an optically anisotropic layer consisting of a liquid crystal polymer alignment layer, especially a tilted liquid crystal layer of a discotic liquid crystal polymer was supported by a triacetyl cellulose film.
- An optical compensation phase difference plate is preferably used.
- the brightness enhancement film exhibits the property of reflecting linearly polarized light of a predetermined polarization axis or circularly polarized light of a predetermined direction when natural light enters due to reflection from the back of a backlight of a liquid crystal display device, etc., and transmits other light.
- the polarizing plate obtained by laminating the brightness enhancement film and the polarizing plate receives light from a light source such as a backlight to obtain transmitted light in a predetermined polarization state, and reflects light other than the predetermined polarization state without transmitting.
- the light reflected on the surface of the brightness enhancement film is further inverted via a reflection layer or the like provided on the rear side thereof and re-entered on the brightness enhancement film, and a part or all of the light is transmitted as light of a predetermined polarization state.
- the brightness enhancement film reflects light having a polarization direction that can be absorbed by the polarizer without being incident on the polarizer, but once reflects it on the brightness enhancement film, and further passes through a reflective layer provided on the back side. Repeatedly inverting the light and re-entering it on the brightness enhancement film, and transmitting only the polarized light whose polarization direction is such that the reflected and inverted light can pass through the polarizer.
- a diffusion plate may be provided between the brightness enhancement film and the above-mentioned reflection layer or the like.
- the light in the polarization state reflected by the brightness enhancement film goes to the reflection layer and the like, but the diffuser provided diffuses the passing light uniformly and at the same time eliminates the polarization state to make the light non-polarized. That is, it returns to the original natural light state.
- the light in the non-polarized state that is, in the natural light state, repeatedly travels toward the reflection layer and the like, is reflected through the reflection layer and the like, passes through the diffusion plate again, and reenters the brightness enhancement film.
- a diffuser plate that returns to the original natural light state it is possible to maintain the brightness of the display screen and at the same time reduce the unevenness in the brightness of the display screen and provide a uniform bright screen.
- the number of repetitions of the first incident light is increased moderately, and a uniform bright display screen can be provided in combination with the diffuser function of the diffuser. Conceivable.
- linearly polarized light having a predetermined polarization axis is transmitted and other light is reflected, such as a multilayer thin film of a dielectric or a multilayer laminate of thin films having different refractive index anisotropies.
- Any suitable material such as a material exhibiting transmission characteristics can be used.
- the transmitted light is incident on the polarizing plate as it is, with the polarization axis aligned. It can be transmitted efficiently.
- a brightness enhancement film that transmits circularly polarized light such as a cholesteric liquid crystal layer, can be directly incident on a polarizer.However, in order to suppress absorption loss, the circularly polarized light is linearly polarized through a retardation plate. be made incident on the polarizing plate is preferably c Note that by using the 1/4 wavelength plate as the retardation plate, can convert circularly polarized light into linearly polarized light.
- the quarter-wave plate sets the in-plane refractive indices of 11 X and ny to satisfy In x-ny
- ⁇ / 4 ( ⁇ : measurement wavelength [nm]). It can be manufactured by controlling the refractive index.
- the quarter-wave plate has, for example, a retardation layer functioning as a quarter-wave plate for monochromatic light having a wavelength of 550 nm and a retardation layer exhibiting other retardation characteristics, for example, a half-wave plate. It can be obtained by a method in which a phase difference layer functioning as a wave plate is superposed. Therefore, this retardation layer may be composed of one layer or two or more layers.
- the cholesteric liquid crystal layer can also reflect different wavelengths by combining two or three or more layers to obtain circularly polarized light in a wide wavelength range such as the visible light region. Based on this, it is possible to obtain circularly polarized light transmitted over a wide wavelength range.
- the polarizing plate used as the optical layer may be formed by laminating a polarizing plate and two or more optical layers as in the above-mentioned polarized light separating type polarizing plate. Therefore, a reflection type elliptically polarizing plate or a semi-transmission type elliptically polarizing plate obtained by combining the above-mentioned reflection type polarizing plate, transflective type polarizing plate and retardation plate may be used.
- the twisted orientated film in which the optical layer is laminated on a polarizing plate can be formed by a method of sequentially and separately laminating in the manufacturing process of a liquid crystal display device or the like. They have the advantage that they are superior in quality stability and assembling work, and can improve the manufacturing process of liquid crystal display devices and the like.
- Appropriate bonding means such as a pressure-sensitive adhesive layer can be used for lamination.
- the above-mentioned twisted tilted alignment film or twisted tilted alignment liquid crystal layer, or an optical film using the same is used on the front side of a surface light source having a reflection layer on the back side in a lighting device used for an image display device or the like.
- the illumination device preferably has at least one prism array layer, and more preferably has two or more prism array layers in which the array direction intersects the upper and lower layers.
- the twisted orientated alignment film or the twisted orientated liquid crystal layer according to the present invention and the optical film using them can be preferably used for forming an image display device such as a liquid crystal display device, an organic EL display device, and a PDP.
- FIG. 3 shows an embodiment of the image display device of the present invention.
- the image display device 100 is used for a liquid crystal cell, an organic EL luminous body, and the like described later. It is formed from the corresponding member 6 and the optical film 10 of FIG. 2 disposed on the member 6.
- the present invention can be used for a liquid crystal display device such as a reflection type, a semi-transmission type, or a transmission-reflection type in which a polarizing plate is disposed on one side or both sides of a liquid crystal cell.
- the liquid crystal cell substrate may be either a plastic substrate or a glass substrate.
- the liquid crystal cell forming the liquid crystal display device is arbitrary, for example, an active matrix driving type typified by a thin film transistor type, a simple matrix driving type typified by a twisted nematic type or a super twisted nematic type, and the like.
- a liquid crystal cell of a type may be used.
- organic electroluminescence device organic EL display device
- a transparent electrode, an organic luminescent layer, and a metal electrode are sequentially laminated on a transparent substrate to form a luminous body (organic electroluminescent luminous body).
- the organic light emitting layer is a laminate of various organic thin films, for example, a laminate of a hole injection layer made of a triphenylamine derivative or the like and a light emitting layer made of a fluorescent organic solid such as anthracene, or A structure having various combinations, such as a laminate of such a light emitting layer and an electron injection layer made of a perylene derivative, or a laminate of a hole injection layer, a light emitting layer, and an electron injection layer. It has been known.
- holes and electrons are injected into an organic light emitting layer by applying a voltage to a transparent electrode and a metal electrode, and the energy generated by the recombination of these holes and electrons is converted into a fluorescent substance.
- the mechanism of recombination on the way is similar to that of a general diode, and as can be expected from this, the current and the emission intensity show strong nonlinearity accompanying rectification with respect to the applied voltage.
- At least one of the electrodes must be transparent in order to extract light emitted from the organic light emitting layer, and is usually formed of a transparent conductor such as indium tin oxide (IT ⁇ ).
- An electrode is used as the anode.
- metal electrodes such as Mg-Ag and A1-Li are usually used.
- the organic light emitting layer is formed of an extremely thin film having a thickness of about 10 nm. For this reason, the organic light emitting layer, like the transparent electrode, Transmits light almost completely. As a result, when light is incident from the surface of the transparent substrate during non-light emission, the light transmitted through the transparent electrode and the organic light emitting layer and reflected by the metal electrode returns to the transparent substrate surface again, and is viewed from the outside.
- the display surface of an OLED display is mirror-like
- an organic EL display device including an organic electroluminescent luminous element having a transparent electrode on the front side of an organic luminescent layer that emits light by applying a voltage and a metal electrode on the back side of the organic luminescent layer
- the transparent electrode A polarizing plate can be provided on the surface side, and a retardation film can be provided between the transparent electrode and the polarizing plate.
- the retardation film such as the twisted tilted alignment film and the polarizing plate according to the present invention have a function of polarizing the light incident from the outside and reflected by the metal electrode
- the polarizing effect causes the mirror surface of the metal electrode to be polarized. This has the effect of not being visible from the outside.
- the retardation film is composed of a 1Z4 wavelength plate and the angle between the polarization directions of the polarizing plate and the retardation film is adjusted to ⁇ 4, the mirror surface of the metal electrode can be completely shielded. Wear.
- linearly polarized light components of the external light incident on the organic EL display device are transmitted by the polarizing plate.
- This linearly polarized light is generally converted into elliptically polarized light by the retardation film.
- the retardation film is a 1/4 wavelength plate and the angle between the polarization directions of the polarizing plate and the retardation film is ⁇ / 4, the linearly polarized light is converted to circularly polarized light.
- This circularly polarized light passes through the transparent substrate, the transparent electrode, and the organic thin film, is reflected by the metal electrode, passes through the organic thin film, the transparent electrode, and the transparent substrate again, and becomes linearly polarized again by the retardation film. Since this linearly polarized light is orthogonal to the polarization direction of the polarizing plate, it cannot pass through the polarizing plate. As a result, the mirror surface of the metal electrode can be completely shielded.
- the PDP generates electric discharge in a rare gas enclosed in the panel, especially a gas mainly composed of neon, and generates the RGB phosphor applied to the panel cells by the vacuum ultraviolet rays generated at that time.
- in-house manufacturing is required to consistently perform the processing steps of punching, sorting, and bonding various optical films to reduce prices.
- in-house manufacturing method in which everything from post-processing (cutting) of the optical film to bonding to the cell, it is necessary to measure the defective area immediately. is there.
- the twisted and tilted oriented film according to the present invention is used for an image display device, it is necessary to design an optical axis according to each display device.
- the twisted and tilted oriented film according to the present invention requires the thickness of the liquid crystal layer and the liquid crystal composition.
- the optical axis can be adjusted according to the compounding amount of the material and the chiral agent.Therefore, it is possible to consistently bond a long film without punching to the desired optical axis angle on the way and bonding it with a rectangular single plate. it can. Therefore, the twisted orientated film of the present invention can be bonded to an image display device such as a liquid crystal display device or an EL display device without passing through processes such as punching, bonding, transporting, packing, and unpacking. It can be preferably used for in-line production performed at Examples>
- Photopolymerizable liquid crystal composition having nematic liquid crystal properties (BAS F: P a1 ioco 1 or LC 242) 9.91 g, chiral agent (BAS F: P a1 ioco 1 or LC 756) 0.009 g and a photopolymerization initiator (Irgacure 907, manufactured by Ciba Charity Chemicals Co., Ltd.) 3. Og was dissolved in 40 g of xanone hexanone.
- nematic liquid crystal photopolymerizable liquid crystal composition manufactured by BASF: P a 1 ioco 1 or LC 242
- chiral agent manufactured by BAS F: P a ioco 1 or LC 756
- photopolymerization initiator Irgacure 907, manufactured by Ciba Charity Chemicals Co., Ltd.
- a polyethylene terephthalate (PET) film substrate is coated with a 2% solution of ethyl silicate in isopropyl alcohol and butanol (Colcoat P: Colcoat P) with a bar coater, and then heated and dried at 120 ° C for 1 minute, and then dried. After forming the orientation layer of about 0.1 ⁇ , a rubbing treatment was performed by rubbing it with a rayon cloth.
- PET polyethylene terephthalate
- Triacetyl cellulose A 2% solution of ethyl silicate in isopropyl alcohol and ptanol (Colcoat Co., Ltd .: Colcoat ⁇ ) was applied on a finolem substrate by a bar coater, and then heated and dried at 120 ° C for 1 minute. After forming an alignment layer having a thickness of about 0, a rubbing treatment was performed thereon by rubbing it with a rayon cloth.
- liquid crystal coating liquid A onto alignment substrate A using a # 5 bar coater, and apply After drying and orienting by heating for 1 minute, take out at room temperature and irradiate with UV light (metal halide lamp, ImjZcm 2 ) to fix the oriented liquid crystal layer, and align it to a thickness of 1.0 / im.
- a twisted tilted alignment film having a liquid crystal layer was obtained.
- a 50 ⁇ triacetyl cellulose (TAC) film with a 20 / im-thick adhesive layer made of an ataryl adhesive is attached to the alignment liquid crystal layer side of this liquid crystal alignment film via the adhesive layer. After that, peeling was performed at the interface between the substrate having the alignment layer of the twisted tilt alignment film and the alignment liquid crystal layer, to obtain a liquid crystal alignment film in which a TAC film, an adhesive layer, and an alignment liquid crystal layer were laminated.
- TAC triacetyl cellulose
- Liquid crystal coating liquid B is applied to alignment substrate A using a # 10 bar coater, and fixed up to fixing under the same conditions as in Example 1, to obtain a liquid crystal alignment film having an alignment liquid crystal layer with a thickness of 2.2 m.
- a liquid crystal alignment film having a TAC film, an adhesive layer, and an alignment liquid crystal layer laminated thereon was obtained in the same manner as in Example 1 except that it was obtained.
- Liquid crystal coating liquid A is coated on alignment substrate B using a # 5 bar coater, and is fixed under the same conditions as in Example 1 until the liquid crystal alignment liquid has an alignment liquid crystal layer with a thickness of 1.1 ⁇ . Got.
- Liquid crystal coating liquid ⁇ is applied on alignment substrate ⁇ using a # 10 bar coater, and is fixed under the same conditions as in Example 1 until a liquid crystal alignment film having an alignment liquid crystal layer with a thickness of 1.9 xm Got.
- Liquid crystal coating liquid A is applied on alignment substrate C using a # 5 bar coater, and is fixed under the same conditions as in Example 1 to obtain a liquid crystal alignment film having an alignment liquid crystal layer with a thickness of 1.0 ⁇ .
- a liquid crystal alignment film having an alignment liquid crystal layer with a thickness of 1.0 ⁇ . was prepared in the same manner as in Example 1 except that TAC film and adhesive layer were obtained. And a liquid crystal alignment film in which an alignment liquid crystal layer was laminated was obtained.
- a liquid crystal coating liquid B is applied on an alignment substrate C using a # 10 bar coater, and is fixed under the same conditions as in Example 1 until a liquid crystal alignment having an alignment liquid crystal layer having a thickness of 2.1 / im. Except that a film was obtained, it was produced in the same manner as in Example 1 to obtain a liquid crystal alignment film in which a TAC film, an adhesive layer, and an alignment liquid crystal layer were laminated.
- a liquid crystal coating liquid A is applied on an alignment substrate D using a # 5 bar coater, and is fixed under the same conditions as in Example 1 until a liquid crystal alignment film having an alignment liquid crystal layer having a thickness of 0.9 ⁇ is obtained. I got Inorem.
- a liquid crystal coating liquid ⁇ was applied on the alignment substrate D using a # 10 bar coater, and the process was performed until the solidification was performed under the same conditions as in Example 1.
- the liquid crystal alignment had an alignment liquid crystal layer having a thickness of 2.0 / m. A film was obtained.
- a liquid crystal coating liquid is coated on a PET film substrate using a # 6 bar coater and fixed until it is fixed under the same conditions as in Example 1.
- the liquid crystal has a 2.0 ⁇ thick liquid crystal alignment layer.
- a liquid crystal alignment film was prepared in the same manner as in Example 1 except that an alignment film was obtained, and a TAC film, an adhesive layer, and an alignment liquid crystal layer were laminated.
- a liquid crystal coating liquid is coated on a PET film substrate using a # 32 bar coater and fixed until the fixation is performed under the same conditions as in Example 1, and a liquid crystal alignment film having a liquid crystal layer with a thickness of 3.2 / xm
- a liquid crystal alignment film in which a TAC film, an adhesive layer, and an alignment liquid crystal layer were laminated was obtained in the same manner as in Example 1 except that the above was obtained.
- Liquid crystal coating liquid ⁇ is applied on a PET film substrate using a # 5 bar coater, and is fixed under the same conditions as in Example 1 until liquid crystal alignment with a liquid crystal layer with a thickness of 2.011 m Except that a film was obtained, it was produced in the same manner as in Example 1 to obtain a liquid crystal alignment film in which a TAC film, an adhesive layer, and an alignment liquid crystal layer were laminated.
- a liquid crystal coating liquid C is coated on the alignment substrate E using a # 6 bar coater, and is fixed under the same conditions as in Example 1 until a liquid crystal alignment film having an alignment liquid crystal layer having a thickness of 2.1 / m is formed. I got Inorem.
- the liquid crystal coating liquid A is applied to the alignment substrate E using a # 32 bar coater, and is fixed under the same conditions as in Example 1 until a liquid crystal alignment having an alignment liquid crystal layer having a thickness of 3.4 ⁇ is obtained. Obtained.
- a liquid crystal coating liquid 8 is applied to the alignment substrate E using a # 5 bar coater, and is fixed under the same conditions as in Example 1 until a liquid crystal alignment film having an alignment liquid crystal layer with a thickness of 1.8 / im is formed. I got a film.
- the retardation value of the liquid crystal alignment film produced in the example or the comparative example was tilted ⁇ 30 ° in the front and slow axis directions using an automatic birefringence measurement device (KOJRA2 1 ADH, manufactured by Oji Scientific Instruments). The value at the time of doing was measured. Based on the phase difference value, the slope was calculated by the following equation.
- the orientation angle of the produced liquid crystal alignment film was measured using an automatic birefringence measuring device (KOIBRA 21 ADH, manufactured by Oji Keiki Kiki Co., Ltd.).
- the orientation angle indicates the angle of the slow axis when the rubbing direction or the slow axis direction of the polymer film substrate is set to 0 °.
- Table 1 shows the evaluation results of the examples and comparative examples.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/548,223 US7704569B2 (en) | 2003-03-06 | 2004-03-05 | Method for producing film with twisted tilted alignment, film with twisted tilted alignment, and image display using same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-60540 | 2003-03-06 | ||
JP2003060540 | 2003-03-06 | ||
JP2004-58943 | 2004-03-03 | ||
JP2004058943A JP4138681B2 (ja) | 2003-03-06 | 2004-03-03 | ねじれ傾斜配向フィルムの製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004079416A1 true WO2004079416A1 (ja) | 2004-09-16 |
Family
ID=32964910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/002798 WO2004079416A1 (ja) | 2003-03-06 | 2004-03-05 | ねじれ傾斜配向フィルムの製造方法、ねじれ傾斜配向フィルムおよびそれを用いた画像表示装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7704569B2 (ja) |
JP (1) | JP4138681B2 (ja) |
KR (1) | KR100828980B1 (ja) |
CN (1) | CN100394222C (ja) |
WO (1) | WO2004079416A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005062807B4 (de) * | 2005-06-29 | 2010-04-29 | Lg Display Co., Ltd. | Matrix-Substrat einer Flüssigkristall-Anzeigevorrichtung und Verfahren zum Herstellen derselben |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004287416A (ja) * | 2003-03-06 | 2004-10-14 | Nitto Denko Corp | 傾斜配向フィルムの製造方法、傾斜配向フィルムおよびそれを用いた画像表示装置 |
JP4738034B2 (ja) * | 2004-08-12 | 2011-08-03 | 富士フイルム株式会社 | 液晶性化合物、組成物および薄膜 |
TWI427336B (zh) | 2004-12-28 | 2014-02-21 | Fujifilm Corp | 光學補償片、其製法及使用它之偏光板和液晶顯示裝置 |
JP2006184646A (ja) * | 2004-12-28 | 2006-07-13 | Fuji Photo Film Co Ltd | 光学補償シート、その製造方法、およびそれを用いた液晶表示装置 |
US7431971B2 (en) * | 2005-03-24 | 2008-10-07 | Fujifilm Corporation | Retardation plate |
KR100738315B1 (ko) | 2005-08-11 | 2007-07-12 | 주식회사 에이스 디지텍 | 하이브리드형 시야각 보상필름의 제조방법 |
TWI409509B (zh) * | 2005-09-07 | 2013-09-21 | Fujifilm Corp | 光學補償膜、其製法、及使用它之偏光板與液晶顯示裝置 |
TWI499835B (zh) * | 2007-11-20 | 2015-09-11 | Seiko Epson Corp | Liquid crystal device, projector and liquid crystal device |
RU2445655C2 (ru) * | 2008-09-22 | 2012-03-20 | Сони Корпорейшн | Пленка замедления, способ ее изготовления и дисплей |
JP2010181473A (ja) * | 2009-02-03 | 2010-08-19 | Toppan Printing Co Ltd | 位相型回折素子、その製造方法、および撮像装置 |
US9922746B2 (en) * | 2013-03-01 | 2018-03-20 | The Regents Of The University Of Michigan | Stretchable composite conductors for flexible electronics, stretchable plasmonic devices, optical filters, and implantable devices and methods for manufacture thereof |
CN104977739B (zh) * | 2015-07-17 | 2018-09-18 | 京东方科技集团股份有限公司 | 一种显示控制方法及显示控制装置、显示系统 |
JP6718503B2 (ja) * | 2016-04-28 | 2020-07-08 | 富士フイルム株式会社 | 偏光板、偏光板の製造方法、液晶表示装置 |
JP7382392B2 (ja) * | 2019-03-13 | 2023-11-16 | 富士フイルム株式会社 | 投映像表示用部材、ウインドシールドガラスおよびヘッドアップディスプレイシステム |
JP7217369B2 (ja) * | 2019-12-26 | 2023-02-02 | 富士フイルム株式会社 | 光学フィルム、円偏光板、有機エレクトロルミネッセンス表示装置 |
JP7232939B2 (ja) * | 2019-12-26 | 2023-03-03 | 富士フイルム株式会社 | 光学フィルム、円偏光板、有機エレクトロルミネッセンス表示装置 |
CN113328260B (zh) * | 2021-05-31 | 2022-05-27 | 电子科技大学 | 基于高分子材料掺杂的电磁波极化调控材料及其应用 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06250166A (ja) * | 1993-02-25 | 1994-09-09 | Sharp Corp | 光学位相差素子および液晶表示装置 |
JPH09178937A (ja) * | 1995-12-25 | 1997-07-11 | Nippon Oil Co Ltd | 液晶表示素子用補償板の製造方法 |
JPH09325212A (ja) * | 1996-05-31 | 1997-12-16 | Sumitomo Chem Co Ltd | 光学異方体フィルムおよび液晶表示装置 |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3158505A (en) * | 1962-07-23 | 1964-11-24 | Fairchild Camera Instr Co | Method of placing thick oxide coatings on silicon and article |
DE3001125A1 (de) * | 1980-01-14 | 1981-07-16 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur herstellung einer fluessigkristallanzeige |
GB2088110B (en) * | 1980-09-25 | 1985-01-30 | Canon Kk | Liquid crystal display devices |
JPS5764209A (en) * | 1980-10-07 | 1982-04-19 | Hitachi Ltd | Liquid crystal display element and its manufacture |
US4472027A (en) * | 1980-12-25 | 1984-09-18 | Canon Kabushiki Kaisha | Method for the orientation of liquid crystal and liquid crystal display device |
US5250214A (en) * | 1990-04-09 | 1993-10-05 | Ricoh Company, Ltd. | Liquid crystal color display device provided with a color filter film and an optical phase plate comprising liquid crystal polymer |
JP2952449B2 (ja) * | 1992-06-03 | 1999-09-27 | 日石三菱株式会社 | 液晶表示素子用補償板の製造法 |
JP3366091B2 (ja) | 1993-11-17 | 2003-01-14 | 新日本石油株式会社 | 液晶表示素子用補償板 |
JP3371342B2 (ja) | 1994-02-14 | 2003-01-27 | ソニー株式会社 | 液晶素子の駆動方法 |
JP3432595B2 (ja) | 1994-06-22 | 2003-08-04 | 住友化学工業株式会社 | 位相差フィルムとその製造方法および液晶表示装置 |
DE69612609T3 (de) * | 1995-02-17 | 2004-08-05 | Merck Patent Gmbh | Polymerischer film |
US5853801A (en) | 1995-09-04 | 1998-12-29 | Fuji Photo Film Co., Ltd. | Process for the preparation of continuous optical compensatory sheet |
JP3616171B2 (ja) | 1995-09-04 | 2005-02-02 | 富士写真フイルム株式会社 | 長尺状光学補償シートの製造方法 |
TW397927B (en) * | 1996-02-16 | 2000-07-11 | Nissan Chemical Ind Ltd | Process for forming a liquid crystal alignment film |
JPH09288210A (ja) | 1996-04-23 | 1997-11-04 | Sumitomo Chem Co Ltd | 光学異方体フィルムとその製造方法および液晶表示装置 |
JPH10253963A (ja) | 1997-03-07 | 1998-09-25 | Hitachi Chem Co Ltd | 液晶配向膜、液晶配向能の付与方法、液晶挟持基板、液晶挟持基板の製造方法、液晶表示素子、液晶表示素子の製造方法及び液晶配向膜用材料 |
JPH11223813A (ja) | 1998-02-06 | 1999-08-17 | Sony Corp | 液晶素子及びその製造方法 |
US6497928B1 (en) * | 1999-05-14 | 2002-12-24 | Canon Kabushiki Kaisha | Liquid crystal device, mesomorphic functional material and liquid crystal apparatus |
JP4115630B2 (ja) | 1999-05-25 | 2008-07-09 | 日東電工株式会社 | 位相差板および楕円偏光板 |
JP4031159B2 (ja) | 1999-09-29 | 2008-01-09 | 富士フイルム株式会社 | 楕円偏光板および液晶表示装置 |
JP3621632B2 (ja) | 2000-07-14 | 2005-02-16 | 日本電信電話株式会社 | 光フィルタおよび波長可変光フィルタ装置 |
JP4618700B2 (ja) | 2001-01-16 | 2011-01-26 | 日東電工株式会社 | 傾斜配向層の製造方法、傾斜配向フィルムの製造方法および傾斜配向フィルム |
JP4522594B2 (ja) * | 2001-01-16 | 2010-08-11 | 日東電工株式会社 | 傾斜配向フィルムおよびその製造方法 |
JP4125876B2 (ja) | 2001-04-13 | 2008-07-30 | 新日本石油株式会社 | 半透過反射型液晶表示装置 |
US6911238B2 (en) * | 2002-02-27 | 2005-06-28 | Fuji Photo Film Co., Ltd. | Liquid crystal compositions, polarization selective membranes and liquid crystal displays |
JP2004045444A (ja) * | 2002-05-21 | 2004-02-12 | Fuji Photo Film Co Ltd | 波長選択性反射膜 |
JP2004206102A (ja) * | 2002-12-12 | 2004-07-22 | Dainippon Printing Co Ltd | 配向膜組成物及びそれを用いた光学素子の製造方法 |
JP2004287416A (ja) * | 2003-03-06 | 2004-10-14 | Nitto Denko Corp | 傾斜配向フィルムの製造方法、傾斜配向フィルムおよびそれを用いた画像表示装置 |
JP2008216587A (ja) | 2007-03-02 | 2008-09-18 | Canon Inc | Si酸化膜の形成方法、配向膜および液晶光学装置 |
-
2004
- 2004-03-03 JP JP2004058943A patent/JP4138681B2/ja not_active Expired - Fee Related
- 2004-03-05 US US10/548,223 patent/US7704569B2/en not_active Expired - Fee Related
- 2004-03-05 WO PCT/JP2004/002798 patent/WO2004079416A1/ja active Application Filing
- 2004-03-05 KR KR1020057016657A patent/KR100828980B1/ko not_active IP Right Cessation
- 2004-03-05 CN CNB200480006090XA patent/CN100394222C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06250166A (ja) * | 1993-02-25 | 1994-09-09 | Sharp Corp | 光学位相差素子および液晶表示装置 |
JPH09178937A (ja) * | 1995-12-25 | 1997-07-11 | Nippon Oil Co Ltd | 液晶表示素子用補償板の製造方法 |
JPH09325212A (ja) * | 1996-05-31 | 1997-12-16 | Sumitomo Chem Co Ltd | 光学異方体フィルムおよび液晶表示装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005062807B4 (de) * | 2005-06-29 | 2010-04-29 | Lg Display Co., Ltd. | Matrix-Substrat einer Flüssigkristall-Anzeigevorrichtung und Verfahren zum Herstellen derselben |
US8363188B2 (en) | 2005-06-29 | 2013-01-29 | Lg Display Co., Ltd. | Array substrate of liquid crystal display device and fabricating method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN100394222C (zh) | 2008-06-11 |
US20060170851A1 (en) | 2006-08-03 |
KR100828980B1 (ko) | 2008-05-14 |
JP2004287417A (ja) | 2004-10-14 |
US7704569B2 (en) | 2010-04-27 |
KR20050109974A (ko) | 2005-11-22 |
JP4138681B2 (ja) | 2008-08-27 |
CN1756975A (zh) | 2006-04-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4207180B2 (ja) | 位相差板およびその製造方法、光学フィルム | |
TWI352830B (ja) | ||
JP4827226B2 (ja) | 偏光板の製造方法、偏光板およびそれを用いた画像表示装置 | |
JP4036322B2 (ja) | 光学フィルム、これを用いた照明装置および画像表示装置 | |
JP3981638B2 (ja) | 光学フィルム、その製造方法、およびこれを用いた位相差フィルムならびに偏光板 | |
JP3960549B2 (ja) | Va型液晶セル用光学補償機能付き偏光板およびva型液晶セル用光学補償機能層 | |
WO2006085454A1 (ja) | ホメオトロピック配向液晶フィルム、それを用いた光学フィルムおよび画像表示装置 | |
WO2004079416A1 (ja) | ねじれ傾斜配向フィルムの製造方法、ねじれ傾斜配向フィルムおよびそれを用いた画像表示装置 | |
JP2002214440A (ja) | 液晶配向フィルムの製造方法、液晶配向フィルム、光学フィルムおよび画像表示装置 | |
JP4420429B2 (ja) | 積層光学フィルム、楕円偏光板および画像表示装置 | |
WO2003071320A1 (fr) | Plaque de polarisation comportant une fonction de compensation optique, et dispositif d'affichage a cristaux liquides utilisant celle-ci | |
WO2004063779A1 (ja) | 広帯域コレステリック液晶フィルム、その製造方法、円偏光板、直線偏光子、照明装置および液晶表示装置 | |
KR100818568B1 (ko) | 경사 배향 필름의 제조 방법, 경사 배향 필름 및 이를이용한 화상 표시 장치 | |
JP3992969B2 (ja) | ホメオトロピック配向液晶フィルム、輝度向上フィルムおよび光学フィルム | |
JP4531329B2 (ja) | 位相差フィルム、輝度向上フィルム、光学フィルムおよび画像表示装置 | |
JP2006133718A (ja) | 光配向膜の製造方法、光配向膜、液晶配向フィルムの製造方法、液晶配向フィルム、光学フィルムおよび画像表示装置 | |
JP2005274909A (ja) | 位相差板の製造方法およびそれにより製造される位相差板 | |
JP4059683B2 (ja) | 複屈折性フィルム、その製造方法、光学フィルムおよび画像表示装置 | |
JP3842102B2 (ja) | ホメオトロピック配向液晶フィルムの製造方法、ホメオトロピック配向液晶フィルムおよび光学フィルム | |
JP2004302075A (ja) | 広帯域コレステリック液晶フィルムの製造方法、円偏光板、直線偏光素子、照明装置および液晶表示装置 | |
JP2004279438A (ja) | 光学フィルムおよび画像表示装置 | |
JP2004309904A (ja) | 円偏光板、輝度向上フィルムおよび画像表示装置 | |
JP3982822B2 (ja) | 積層複屈折フィルム、それを用いた液晶パネルおよび液晶表示装置 | |
WO2005096039A1 (ja) | 偏光フィルムの製造方法、それにより得られた偏光フィルムおよびそれを用いた画像表示装置 | |
JP2006098513A (ja) | 液晶配向フィルムの製造方法、液晶配向フィルム、光学フィルムおよび画像表示装置 |
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 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 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 | ||
ENP | Entry into the national phase |
Ref document number: 2006170851 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10548223 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020057016657 Country of ref document: KR Ref document number: 2004806090X Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057016657 Country of ref document: KR |
|
122 | Ep: pct application non-entry in european phase | ||
WWP | Wipo information: published in national office |
Ref document number: 10548223 Country of ref document: US |