CN103097923B - Optical member and application of same - Google Patents
Optical member and application of same Download PDFInfo
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- CN103097923B CN103097923B CN201180040558.7A CN201180040558A CN103097923B CN 103097923 B CN103097923 B CN 103097923B CN 201180040558 A CN201180040558 A CN 201180040558A CN 103097923 B CN103097923 B CN 103097923B
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- adhesive phase
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- bonding agent
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Classifications
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- G02B1/105—
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J109/00—Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
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- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/13332—Front frames
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- 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
- G02F1/133502—Antiglare, refractive index matching layers
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- 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
- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
Abstract
An optical member for use in an image display device provided with the optical member, a transparent protective member, and an adhesive layer interposed therebetween, and further provided with an image display disposed on the side opposite from the adhesive layer on the optical member. The optical member satisfies condition (1); that is, an evaluative adhesive having an isoprene polymer as the principal component thereof and containing 14 wt% of dicyclopentenyloxyethyl methacrylate, 8 wt% of benzyl methacrylate, 2 wt% of methyl methacrylate, and 0.2 wt% of a photopolymerization initiator is dripped in an amount of 10 [mu]L onto the surface of the optical member and then allowed to stand for 5 minutes, whereupon the contact angle between the optical member and the evaluative adhesive is 55 DEG or less. The invention provides an optical member in which appearance defects due to bubbles forming between the optical member and the transparent protective member can be reduced, and further provides an image display device in which such appearance defects are reduced through the use of the optical member.
Description
Technical field
The present invention relates to a kind of optics, it is for having optics, transparency protected parts and the adhesive phase between these two parts and also having the image display device of image displaying part at optics with adhesive phase opposite side.
Background technology
Know; in the image display devices such as liquid crystal display (LCD), display of organic electroluminescence (ELD), plasma display (PDP), surface-conduction-electron emission display (SED), Field Emission Display (FED); the image displaying parts such as liquid crystal cell depending on allowing side be configured with the opticses such as Polarizer, antiglare film, antireflection film; in order to protect these opticses, also clipping adhesive phase and being configured with the transparency protected parts that glass etc. makes.As the method making this image display device; known such as have drops of adhesive is added on aforementioned optical parts, launch after put into aforementioned transparent guard block, make it overlap on optics; make bonding agent solidify again, make their shape all-in-one-piece methods (JP2005-55641A) thus.
But depending on the situation of the optics of use, can be existed the phenomenon that bonding agent is repelled time in drops of adhesive to optics, its result, produces bubble between optics and transparency protected parts.Therefore, the present invention aims to provide a kind of optics that can suppress the bad order caused by the bubble generated between optics and transparency protected parts.
In this case, present inventor conducts in-depth research, and this completes the present invention.
Summary of the invention
That is, the present invention includes following content:
1 optics, for having optics, transparency protected parts and the adhesive phase between these two parts and also having the image display device of image displaying part at optics with adhesive phase opposite side, it meets the condition of following (1),
(1) will take isoprene copolymer as principal ingredient, after on the surface dripping to aforementioned optical parts containing the evaluation bonding agent 10 μ l of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, aforementioned optical parts when placing 5 minutes and the contact angle of aforementioned evaluation bonding agent are below 55 °.
Optics described in 21 also meets the condition of following (2),
(2) will take isoprene copolymer as principal ingredient, after on the surface being applied to aforementioned optical parts containing the evaluation bonding agent of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, the aforementioned optical parts be formed in the sample of adhesive phase through solidification process to the maximum shear stress of aforementioned adhesion oxidant layer at more than 140N.
Optics described in 31 or 2, it is sheet or membranaceous.
Optics according to any one of 41 ~ 3, it is inserted at least one process of surface in non-glare treated, antireflection process, dura mater process, electrostatic prevention process and adhesion promotion process of the side of described adhesive phase.
Optics according to any one of 51 ~ 4, its surface free being inserted into the side of described adhesive phase crosses antifouling process.
6 polarizer diaphragms, the optics according to any one of 1 ~ 5 is formed.
7 Polarizers, have the polarizer diaphragm described in 5, and polarizer.
8 image display devices, have optics, transparency protected parts and the adhesive phase between these two parts, also have image displaying part at optics with adhesive phase opposite side, and described optics meets the condition of aforementioned (1).
Image display device described in 98, wherein, described optics also meets the condition of aforementioned (2).
Image display device described in 10 8 or 9; wherein, the adhesive phase between described optics and described transparency protected parts is formed by being cured process to the bonding agent containing at least one polymkeric substance be selected from acrylic resin, hydriding terpene resinoid, xylene resin, butadiene polymer and isoprene copolymer, (methyl) acrylic ester monomer and Photoepolymerizationinitiater initiater.
Image display device described in 11 10, wherein, described acryl resin is for being selected from least one polymkeric substance in the ester compounds of polyurethane (methyl) acrylate, polyisoprene class (methyl) acrylate, polyisoprene class (methyl) acrylate.
Image display device described in 12 10 or 11, described (methyl) acrylic ester monomer is for being selected from least one monomer in (methyl) methyl acrylate, (methyl) benzyl acrylate, (methyl) acrylic acid dicyclopentenyl oxygen ethyl ester, (methyl) isobornyl acrylate and (methyl) acrylic acid 2-hydroxybutyl.
13 opticses meeting the condition of aforementioned (1) have optics, transparency protected parts and the adhesive phase between these two parts and in the application also had with adhesive phase opposite side in the image display device of image displaying part of optics.
The application of the optics described in 14 13, wherein, described optics also meets aforementioned condition (2).
The application of the optics described in 15 13 or 4, wherein, described optics is sheet or membranaceous.
The application of the optics according to any one of 16 13 ~ 15, wherein, at least one process of the surface being inserted into the side of described adhesive phase in non-glare treated, antireflection process, dura mater process, electrostatic prevention process and adhesion promotion process of described optics.
The application of the optics according to any one of 17 13 ~ 16, wherein, the surface free being inserted into the side of described adhesive phase of described optics crosses antifouling process.
The present invention can provide a kind of optics that can suppress the bad order caused by the bubble generated between optics and transparency protected parts, and a kind of passing through uses this optics and make the image display device that aforementioned bad order is inhibited.
Accompanying drawing explanation
Fig. 1 is the concept map of image display device of the present invention.
The schematic diagram of the sample that Fig. 2 uses when being the maximum shear stress measuring optics.
Embodiment
< optics >
The parts making image display device used for optical part of the present invention; this image display device has optics of the present invention, transparency protected parts and the adhesive phase between these two parts, also has image displaying part at aforementioned optical parts with adhesive phase opposite side.And the contact angle measured by specific evaluation bonding agent used for optical part of the present invention is below setting.Like this; in the image display device successively from image displaying part with image displaying part, optics, adhesive phase and transparency protected parts; by adopting the optics of the present invention with the contact angle of setting as aforementioned optical parts, the generation of bubble between optics and transparency protected parts can be suppressed.
Optics of the present invention meets the condition of following (1):
(1) will take isoprene copolymer as principal ingredient, after on the surface dripping to aforementioned optical parts containing the evaluation bonding agent 10 μ l of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, aforementioned optical parts when placing 5 minutes and the contact angle of aforementioned evaluation bonding agent are below 55 °.
Aforementioned evaluation bonding agent is the bonding agent of the contact angle for evaluating optics, might not by the adhesive phase of this bonding agent composing images display device.This evaluation with bonding agent as described above, take isoprene copolymer as principal ingredient, containing methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight.Photoepolymerizationinitiater initiater mentioned here can adopt gorgeous good solid 184(Irgacure 184) etc. known polymerization initiator.Other additives of evaluation bonding agent are except acetone, 2,4, beyond the polymerization regulator of the solvent, 1-spicy thioalcohol and so on of 6-trimethylbenzoic acid and so on, also diphenylphosphine can be contained, but, in fact, except aforementioned essential component, other compositions are whole or be substantially made up of isoprene copolymer.Because evaluation bonding agent is made up of such composition, be therefore transparent, there is viscosity.
Optics of the present invention when placing 5 minutes after the aforementioned evaluation bonding agent 10 μ l of its surface instillation, and the contact angle of optical component surfaces and evaluation bonding agent is below 55 °.Although the mensuration in-service evaluation bonding agent of this contact angle, also can measure by the method same with water contact angle, such as, the Contact Angle System " OCA30L " of DataPhysics company can be used to measure.
The aforementioned contact angle of optics of the present invention, below 55 °, can suppress the generation of aforementioned bubble thus.Consider from the angle suppressing bubble to occur, preferred contact angle is below 50 °.
Optics of the present invention preferably also meets the condition of following (2):
(2) will take isoprene copolymer as principal ingredient, after on the surface being applied to aforementioned optical parts containing the evaluation bonding agent of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, the aforementioned optical parts be formed in the sample of adhesive phase through solidification process to the maximum shear stress of aforementioned adhesion oxidant layer at more than 140N.
Here, the assay method of the maximum shear stress of composition graphs 2 pairs of opticses is described.First, as evaluation bonding agent, use evaluation bonding agent as hereinbefore.Then, after the surface of the optics 1 of fitting in advance on a glass plate 6 coating evaluation bonding agent, again glass plate 7 is overlapped on the surface being coated with bonding agent, then irradiate activation evergy line and be cured process, between optics 1 and glass plate 7, form adhesive phase 8 thus, make measurement sample.Afterwards, make on the direction (direction of arrow in Fig. 2) that glass plate 6 is relative with glass plate 7, namely on the direction pulling open adhesive phase 8 from optics 1, apply stress with certain speed, the maximal value of the power observed is the maximum shear stress.This maximum shear stress can measure according to JIS K6868-2.As the device measuring this maximum shear stress, such as, can use the Autograph(AG-1 that Shimadzu Seisakusho Ltd. produces).The maximum shear stress recorded like this means the maximum shear stress of the optics specified in the condition of aforementioned (2).
The maximum shear stress of optics is preferably at more than 140N.By making this maximum shear stress at more than 140N; optics is improved with the adherence of the transparent transparency protected parts clipping bonding agent and lamination; such as; in the image display device that the transparency protected parts that LCD TV is such are large; the displacement of these parts that can prevent the deadweight of transparency protected parts from causing; in addition, have in the image display device of physical loads when such mobile of personal digital assistant device, the displacement of these parts caused by this physical loads can be prevented.
Optics of the present invention can be tabular, sheet, the membranaceous parts with aforementioned specific contact angle, but as component parts, preferred sheet or the membranaceous parts of image display device.Wherein, again preferably through the parts of non-glare treated, antireflection process, dura mater process, electrostatic prevention process, primary coat process; as the films through these process, can be antiglare film, optical diffusion film, antireflection film, polarizer diaphragm or there is the Polarizer etc. of polariscope diaphragm.Below these are described.
Antiglare film is used for giving anti-dazzle function to image display device, such as, can be on the surface of transparent base film, be formed with the film of anti-dazzle.As the suitable example of anti-dazzle mentioned here have (a) to define from the teeth outwards by disperseing light transmission particulate in translucent resin the concavo-convex antiglare layer of regulation, (b) on the surface of translucent resin with metal die etc. define the concavo-convex antiglare layer of regulation, (c) directly define concavo-convex anti-dazzle of regulation on the surface of transparent base film.Wherein, consider from the angle of anti-glare, other optical characteristics, preferred aforementioned (a) and (b).
As the transparent material film for antiglare film, as long as have the transparency and the resin molding of physical strength of appropriateness, such as, can be TAC(Triafol T) etc. the polyolefin resins such as the polyester resins such as cellulose acetate resinoid, acrylic resin, polycarbonate resin, polyethylene terephthalate, tygon, polypropylene.
As long as the translucent resin forming aforementioned antiglare layer has light transmission, such as can use the solidfied material of the ionizing radiation curable resin such as ultraviolet curing resin, electron ray curing type resin, the solidfied material, thermoplastic resin, metal alkoxide base polymer etc. of thermohardening type resin.Wherein, be good with the solidfied material of ionizing radiation curable resin.
As ionizing ray curable resin, can be by the multifunctional urethane acrylate etc. of the synthesis such as the hydroxy ester of the polyfunctional acrylate of the acrylate or methacrylate and so on of polyvalent alcohol, diisocyanate and polyvalent alcohol and acrylic or methacrylic acid.In addition, except these resins, the polyether resin, vibrin, epoxy resin, alkyd resin, spiral shell acetal resin, polybutadiene, polymercaptan polyolefin resin etc. with esters of acrylic acid functional group can also be used.
When using ultraviolet curing resin in ionizing radiation gel-type resin, usually add Photoepolymerizationinitiater initiater.Photoepolymerizationinitiater initiater suitably can be selected according to the resin used.As Photoepolymerizationinitiater initiater (radical polymerization initiator), benzoin and its alkyl ethers etc. such as benzoin, benzoin methylether, benzoin ethyl ether, benzoin iso-propylether, benzil methyl ketal can be used.
The solidfied material of thermosetting resin can be the thermoset polyurethane resin, phenolics, urea melamine, epoxy resin, unsaturated polyester resin, silicones etc. that are formed by acrylic polyol and isocyanate prepolymer.
Thermoplastic resin can use acetylcellulose, cellulose nitrate, cellulose acetate-butyrate, ethyl cellulose, the cellulose derivatives such as methylcellulose, vinyl acetate and multipolymer thereof, vinyl chloride and multipolymer thereof, the vinyl resins such as vinylidene chloride and multipolymer thereof, polyvinyl formal, the acetal resins such as polyvinyl butyral, acryl resin and multipolymer thereof, the acrylic resin such as methacrylic resin and multipolymer thereof, polystyrene resin, polyamide, linear polyester resin, polycarbonate resin etc.
The silica type matrix etc. that it is raw material that metal alkoxide base polymer can use with silanol salt type material.Specifically, alkoxy silane passes through hydrolysis, dehydrating condensation forms mineral-type or organo-mineral complexing class matrix for available tetramethoxy-silicane, tetraethoxysilane etc.
When using the solidfied material of ionizing radiation curable resin as translucent resin, need to be coated with on transparent material film, the ionizing ray such as irradiation ultraviolet radiation, electron ray after drying.In addition, when using the solidfied material of thermosetting resin, metal alkoxide base polymer as translucent resin, to heat after coating, drying.
Light transmission particulate can be such as the inorganic particles etc. such as the organic fine particles such as acryl resin, melamine resin, tygon, polystyrene, organic siliconresin, acrylic-styrene copolymer and calcium carbonate, silica, aluminium oxide, barium carbonate, barium sulphate, titanium dioxide, glass, can use the one in these particulates or be use mixing two or more.In addition, in order to obtain desired anti-glare or other optical characteristics, as long as make the appropriate adjustments the kind, particle diameter, refractive index, content etc. of light transmission particulate.
When being formed concavo-convex with metal die etc. at anti-glare layer surface, as this type of metal die, the mould of tabular or roll can be used.
In order to form these antiglare layer, by containing formed the resin material (ionizing ray curable resin, thermoset resin, metal alkoxide) of translucent resin, light transmission particulate coating solution to transparent material film after, as required, metal die is used to be cured process.About the coating process of coating fluid, known method can be adopted, such as, can use concave surface rubbing method, nick face rubbing method, print roll coating method, bar type rubbing method, scraper for coating method, air knife coating, kiss-coating method, some glue rubbing method etc.
Then, curing of coating is made by ionizing ray and/or heat.To the kind of ionizing ray without particular restriction, suitably can select from ultraviolet, electron ray, near ultraviolet ray, visible ray, near infrared ray, infrared ray, X ray etc. according to the kind of translucent resin, but preferably ultraviolet, electron ray, from easy and simple to handle, easily obtain high-octane angle and consider, especially preferably ultraviolet.
Optical diffusion film is to expand for the purpose of visual angle of image display device etc., and the light from image display device is spread, such as, can be that transparent base film has the optical diffusion film making the light diffusion layer of light transmission microparticulate in translucent resin on the surface.Here, as transparent base film, translucent resin, light transmission particulate, can use and transparent base film cited in aforementioned antiglare film, translucent resin, material that light transmission particulate is identical.When forming light diffusion layer, consider from the angle of the light diffusing desired by giving, as long as make the appropriate adjustments the thickness etc. of the kind of the kind of the kind of transparent base film, translucent resin, light transmission particulate, particle diameter, refractive index, content, light diffusion layer.
Antireflection film is a kind of for preventing the external light reflection on incident image display device surface, improving the film of image display device display quality, such as, is the film in the outside of transparent base film with low-index layer.In addition, also hard membrane layer, high refractive index layer, middle index layer can be set between such transparent base film and low-index layer, also can at the hard membrane layer of outermost layer setting for giving mar resistance.
Said transparent base film can use the film that the film that exemplifies of passing the imperial examinations at the provincial level with the antiglare film is above identical herein.
The example of low-index layer has the layer containing adhesive stroma and inorganic particles.As the material forming adhesive stroma, such as by irradiating ionizing ray to the potpourri containing ionizing radiation curable resin and polymerization initiator, making it be polymerized, solidify and obtain, also obtaining by carrying out dehydrating condensation to the hydrolysate of alkoxy silane.
As ionizing radiation curable resin, polymerization initiator, can be used in and ionizing radiation curable resin cited in aforementioned antiglare film, material that polymerization initiator is identical.On the other hand, as inorganic particulate, such as, can be LiF(refractive index 1.4), MgF(refractive index 1.4), 3NaFAlF(refractive index 1.4), AlF(refractive index 1.4), Na
3alF
6low refractive particles or hollow silica particulates such as (refractive indexes 1.33).
Hard membrane layer, by irradiating ionizing ray to the potpourri containing ionizing radiation curable resin and polymerization initiator, makes it be polymerized, is solidified to form.As ionizing ray curable resin, polymerization initiator, can use and ionizing radiation curable resin enumerated supra, material that polymerization initiator is identical.
As the material forming high refractive index layer, without particular restriction, inorganic material and organic material can be used.As inorganic material, such as, can be the particulates such as zinc paste, titanium dioxide, cerium oxide, aluminium oxide, silicyl oxide, tantalum oxide, yttria, ytterbium oxide, zirconia, antimony oxide, tin indium oxide (below also referred to as ITO).In addition, also antistatic performance is given by forming this high refractive index layer.
Polarizer is formed by the polarizer made with polyvinyl alcohol (PVA) with for the protection of the polarizer diaphragm of this polarizer.As long as optics of the present invention meets aforementioned contact corner condition, both can be Polarizer, also can be polarizer diaphragm.As polarizer diaphragm; can be TAC(Triafol T) etc. the polyolefin resins such as the polyester resins such as cellulose acetate resinoid, acrylic resin, polycarbonate resin, polyethylene terephthalate, tygon, polypropylene, but preferably the adhesion promotion process such as Corona discharge Treatment, glow discharge process, primary coat process, acid treatment, alkali treatment, Ultraviolet radiation process were carried out on the surface of these resins.Wherein, consider, more preferably through polyester resin, polyolefin resin, acrylic resin, the polycarbonate resin of adhesion promotion process from the angle of aforementioned the maximum shear stress.
Optics of the present invention preferably its surface free crosses the antifouling process carried out with levelling agent etc.If have passed through antifouling process, then the contact angle that there are aforementioned optical parts becomes large tendency.
The transparency protected parts > of <
Transparency protected parts are configured in image display device depending on recognizing the transparent component of side most surface, for physically protecting image display device.As this transparency protected parts, general glass plate can be used.
< bonding agent >
Bonding agent described herein is used between optics of the present invention and aforementioned transparent guard block, can use bonding agent as in the past.Wherein, preferably containing at least one polymkeric substance be selected from acrylic resin, hydriding terpene resinoid, xylene resin, butadiene polymer and isoprene copolymer, (methyl) acrylic ester monomer and Photoepolymerizationinitiater initiater.
As foregoing acrylic resin, be preferably the carboxylate of polyurethane (methyl) acrylate, polyisoprene class (methyl) acrylate, polyisoprene class (methyl) acrylate.On the other hand, as aforementioned (methyl) acrylic monomer, it can be such as (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) hydroxy-ethyl acrylate, (methyl) acrylic acid 2-hydroxy methacrylate, (methyl) acrylic acid 2-hydroxy propyl ester, (methyl) hy-droxybutyl, (methyl) acrylic acid 2-hydroxybutyl, (methyl) acrylic acid 2-hydroxyl-3-phenoxy propyl ester, (methyl) glycidyl acrylate, (methyl) benzyl acrylate, (methyl) isobornyl acrylate, (methyl) acrylic acid dicyclopentenyl oxygen ethyl ester etc.Wherein, preferred (methyl) methyl acrylate, (methyl) benzyl acrylate, (methyl) acrylic acid dicyclopentenyl oxygen ethyl ester, (methyl) isobornyl acrylate, (methyl) acrylic acid 2-hydroxybutyl.These compounds can combinationally use separately or with another above.
In addition, Photoepolymerizationinitiater initiater, solvent, polymerization regulator etc. can be contained in bonding agent.
Said bonding agent also can be aforementioned evaluation bonding agent herein.
As the method forming adhesive phase between optics of the present invention and transparency protected parts; can be such as after the surperficial coating adhesive of this optics; transparency protected parts are overlapped on a surface, then irradiates the method that activation evergy line is cured process.As activation evergy line, suitably can select from ultraviolet, electron ray, near ultraviolet ray, visible ray, near infrared ray, infrared ray, X ray etc., wherein preferred ultraviolet.
< image display device >
Like this, the unit comprising optics of the present invention, transparency protected parts and the adhesive phase between these two parts can be manufactured.Further, by there is image displaying part at this optics with adhesive phase opposite side, image display device can be formed.At this, in conjunction with schematic diagram and Fig. 1 of image display device of the present invention, image display device is described.As shown in Figure 1, image display device 5 comprises image displaying part 4, optics 1, adhesive phase 3 and transparency protected parts 2 successively.At this, transparency protected parts 2 become image display device 5 depending on recognizing side, image displaying part 1 becomes the light source side (not shown) in image display device 5.
As image displaying part 1, such as, can be liquid crystal panel, EL panel, PDP etc.
When image display device 5 is liquid crystal indicator, be also configured with rear side Polarizer, prism plate, light diffusing sheet, back lighting device (all not shown in the diagram) in the light source side of image displaying part 4.
Embodiment
By embodiment, the present invention is described in detail further below, but the present invention is not limited to these embodiments.
< evaluates and uses bonding agent >
Employ and carry out the following evaluation bonding agent analyzed by vapor-phase chromatography.
Principal ingredient: isoprene copolymer
Methacrylic acid dicyclopentenyl oxygen ethyl ester: 14 % by weight
Benzyl methacrylate: 8 % by weight
Methyl methacrylate: 2 % by weight
Photoepolymerizationinitiater initiater (gorgeous good solid 184): 0.2 % by weight
Other additives: (methyl) acrylic ester monomer 0.8 % by weight, acetone, 2,4,6-trimethylbenzoic acids, 1-spicy thioalcohol, diphenylphosphine are (although these compounds observe peak in gas chromatographic analysis, below quantitation limit.）
The mensuration > of < contact angle
After the commentary valency bonding agent 5ml that goes forward is dripped on the surface of the membranaceous optics as determination object, place 5 minutes, then, the contact angle of this optics and this evaluation bonding agent is determined with the Contact Angle System " OCA30L " that DataPhysics company produces.
The mensuration > of < the maximum shear stress
After the surface of optics on a glass of fitting in advance is coated with aforementioned evaluation bonding agent, then glass plate is overlapped on the surface being coated with bonding agent.At this, make the length of the bonding agent coated film in the direction of applying stress be about 12.5mm, the thickness of bonding agent coated film is adjusted to about 150 μm.
Then, UV irradiation unit (Shinko chemical company product) is used, with accumulated light 5000mJ/cm
2carry out Ultraviolet radiation, aforementioned adhesion agent is solidified, form adhesive phase.
To the measurement sample made like this, use the Autograph(AG-1 that company of Shimadzu Seisakusho Ltd. produces) make on direction relative between glass plate, namely on the direction pulling open adhesive phase from optics, apply stress with certain speed (5mm/min), obtain the maximum shear stress.
The evaluation > that < bubble occurs
Bubble-free is had to evaluate as follows between optics and transparency protected parts.
First, use glass plate as transparency protected parts.Then, aforementioned evaluation bonding agent conversion is acted on the bonding agent of the adhesive phase formed between optics and transparency protected parts.
Particularly, after the face center portion coating adhesive of the optics of vertical 9cm × horizontal 9cm, glass plate is overlapped on it, evaluate the expansion situation of bonding agent.By not entraining into bubble, bonding agent launches good to be designated as zero, by entraining into part bubble, bonding agent does not well launch is designated as ×.If the coincidence glass plate stage do not entrain into bubble, bonding agent launches good, even if be cured process then, also still has good outward appearance, and if entrain into bubble, even if be cured process then, bubble still can remain, bad order.
1> evaluated by < sample
The contact angle of membranaceous optics (sample No.1 ~ 12), the maximum shear stress with following formation are evaluated.Result is shown in table 1.
(sample No.1)
Triafol T (hereinafter referred to as TAC) base material film has the membranaceous optics of the antiglare layer formed primarily of tetramethylol methane tetraacrylate (claiming PETA below), dipentaerythritol acrylate (hereinafter referred to as DPHA).
(sample No.2)
TAC base material film has the membranaceous optics of the antiglare layer formed primarily of PETA.
(sample No.3)
TAC base material film has the membranaceous optics of the antiglare layer formed primarily of PETA, IPDI.With TOF-SIMS, the surface of this optics is analyzed, do not find the existence of fluorochemicals.
(sample No.4)
TAC base material film has the membranaceous optics of the antiglare layer formed primarily of PETA, organosiloxane.
(sample No.5)
TAC base material film has the membranaceous optics of the hard membrane layer formed primarily of PETA, hexamethylene diisocyanate (hereinafter referred to as HDI).
(sample No.6)
TAC base material film has the membranaceous optics of the hard membrane layer formed primarily of PETA, DPHA, three (2-acrylyl oxy-ethyl) isocyanuric acid ester (hereinafter referred to as TAIC), IPDI.
(sample No.7)
TAC base material film has formed primarily of PETA, DPHA, IPDI, 2-hydroxyethyl methacrylate (hereinafter referred to as HEMA) and the membranaceous optics of antiglare layer containing antistatic agent.
(sample No.8)
TAC base material film has antistatic backing and there is the membranaceous optics of antiglare layer formed primarily of PETA, DPHA, IPDI, HEMA, TAIC on this antistatic backing.With TOF-SIMS, the surface of this optics is analyzed, find to there is PFPE.
(sample No.9)
TAC base material film has antistatic backing and there is the membranaceous optics of antiglare layer formed primarily of PETA, DPHA, IPDI, HEMA, TAIC on this antistatic backing.With TOF-SIMS, the surface of this optics is analyzed, find to there is PFPE.
(sample No.10)
TAC base material film has the membranaceous optics of the antiglare layer formed primarily of PETA, IPDI.With TOF-SIMS, the surface of this optics is analyzed, find to there is PFPE.
(sample No.11)
TAC base material film has formed primarily of PETA, DPHA, IPDI and the membranaceous optics of antiglare layer containing antistatic agent.With TOF-SIMS, the surface of this optics is analyzed, find to there is PFPE.
Table 1
Embodiment and comparative example
Carried out aforementioned bubble to sample No.3 to evaluate, consequently, do not entrained into bubble, bonding agent launches good.On the other hand, also carried out aforementioned bubble to sample No.9 and evaluated, consequently, entrain into part bubble, bonding agent does not launch well.
2> evaluated by < sample
The surface of PET base material film can carry out making the adhesion promotion process that contact angle is 25 °, the maximum shear stress is 160N.
If carry out aforementioned bubble to aforementioned optical parts to evaluate, it is expected to entrain into bubble, bonding agent launches good.
Reference example
The maximum shear stress of TAC base material film is 55N.
Symbol description
1: optics
2: transparency protected parts
3: adhesive phase
4: image displaying part
5: image display device
6,7: glass plate
8: the adhesive phase formed with bonding agent by evaluation
Claims (17)
1. optics; for there is optics, transparency protected parts and the adhesive phase between these two parts and with adhesive phase opposite side, there is the image display device of image displaying part at optics; described optics meets the condition of following (1)
(1) will take isoprene copolymer as principal ingredient, after on the surface being added drop-wise to described optics containing the evaluation bonding agent 10 μ l of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, described optics when placing 5 minutes and the contact angle of described evaluation bonding agent are below 55 °.
2. optics according to claim 1, is characterized in that, also meets the condition of following (2),
(2) will take isoprene copolymer as principal ingredient, after on the surface being applied to described optics containing the evaluation bonding agent of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, the described optics be formed in the sample of adhesive phase through solidification process to the maximum shear stress of described adhesive phase at more than 140N.
3. optics according to claim 1 and 2, is characterized in that, is sheet or membranaceous.
4. optics according to claim 1 and 2, it is characterized in that, at least one process of the surface being inserted into the side of described adhesive phase in non-glare treated, antireflection process, dura mater process, electrostatic prevention process and adhesion promotion process of described optics.
5. optics according to claim 1 and 2, is characterized in that, the surface free being inserted into described adhesive phase side of described optics crosses antifouling process.
6. polarizer diaphragm, the optics according to any one of Claims 1 to 5 is formed.
7. Polarizer, has polarizer diaphragm according to claim 6, and polarizer.
8. image display device, have optics, transparency protected parts and the adhesive phase between these two parts, also have image displaying part in the side contrary with adhesive phase of optics, described optics meets the condition of following (1),
(1) will take isoprene copolymer as principal ingredient, after on the surface being added drop-wise to described optics containing the evaluation bonding agent 10 μ l of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, described optics when placing 5 minutes and the contact angle of described evaluation bonding agent are below 55 °.
9. image display device according to claim 8, is characterized in that, described optics also meets the condition of following (2),
(2) will take isoprene copolymer as principal ingredient, after on the surface being applied to described optics containing the evaluation bonding agent of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, the described optics be formed in the sample of adhesive phase through solidification process to the maximum shear stress of described adhesive phase at more than 140N.
10. image display device according to claim 8 or claim 9; it is characterized in that, the adhesive phase between described optics and described transparency protected parts is formed by being cured process to the bonding agent containing at least one polymkeric substance be selected from acrylic resin, hydriding terpene resinoid, xylene resin, butadiene polymer and isoprene copolymer, (methyl) acrylic ester monomer and Photoepolymerizationinitiater initiater.
11. image display devices according to claim 10, it is characterized in that, described acryl resin is for being selected from least one polymkeric substance in the ester compounds of polyurethane (methyl) acrylate, polyisoprene class (methyl) acrylate, polyisoprene class (methyl) acrylate.
12. image display devices according to claim 10, it is characterized in that, described (methyl) acrylic ester monomer is for being selected from least one monomer in (methyl) methyl acrylate, (methyl) benzyl acrylate, (methyl) acrylic acid dicyclopentenyl oxygen ethyl ester, (methyl) isobornyl acrylate and (methyl) acrylic acid 2-hydroxybutyl.
13. application of optics in image display device meeting the condition of following (1); described image display device has optics, transparency protected parts and the adhesive phase between these two parts and also has image displaying part in the side contrary with adhesive phase of optics
The condition of described (1) is, to take isoprene copolymer as principal ingredient, after on the surface being added drop-wise to described optics containing the evaluation bonding agent 10 μ l of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, described optics when placing 5 minutes and the contact angle of described evaluation bonding agent are below 55 °.
14. application according to claim 13, is characterized in that, described optics also meets the condition of following (2),
(2) will take isoprene copolymer as principal ingredient, after on the surface being applied to described optics containing the evaluation bonding agent of methacrylic acid dicyclopentenyl oxygen ethyl ester 14 % by weight, benzyl methacrylate 8 % by weight, methyl methacrylate 2 % by weight and Photoepolymerizationinitiater initiater 0.2 % by weight, the described optics be formed in the sample of adhesive phase through solidification process to the maximum shear stress of described adhesive phase at more than 140N.
15. application according to claim 13 or 14, it is characterized in that, described optics is sheet or membranaceous.
16. application according to claim 13 or 14, it is characterized in that, at least one process of the surface being inserted into the side of described adhesive phase in non-glare treated, antireflection process, dura mater process, electrostatic prevention process and adhesion promotion process of described optics.
17. application according to claim 13 or 14, it is characterized in that, the surface free being inserted into the side of described adhesive phase of described optics crosses antifouling process.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-189176 | 2010-08-26 | ||
| JP2010189176A JP5750848B2 (en) | 2010-08-26 | 2010-08-26 | Optical member for image display device |
| PCT/JP2011/069240 WO2012026560A1 (en) | 2010-08-26 | 2011-08-19 | Optical member and application of same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103097923A CN103097923A (en) | 2013-05-08 |
| CN103097923B true CN103097923B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201180040558.7A Expired - Fee Related CN103097923B (en) | 2010-08-26 | 2011-08-19 | Optical member and application of same |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5750848B2 (en) |
| KR (1) | KR101780849B1 (en) |
| CN (1) | CN103097923B (en) |
| TW (1) | TWI551660B (en) |
| WO (1) | WO2012026560A1 (en) |
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| KR101962550B1 (en) | 2012-05-09 | 2019-03-26 | 데쿠세리아루즈 가부시키가이샤 | Image display device manufacturing method |
| WO2017026078A1 (en) * | 2015-08-10 | 2017-02-16 | 住友化学株式会社 | Polarizing plate, image display device, and method for manufacturing polarizing plate |
| JP6805966B2 (en) * | 2017-05-24 | 2020-12-23 | Ａｇｃ株式会社 | Cover member, manufacturing method of cover member and display device |
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| US6141068A (en) * | 1997-06-13 | 2000-10-31 | Seiko Epson Corporation | Display devices, electronic apparatus using the same, and polarized light separator |
| US6917473B2 (en) * | 2000-01-13 | 2005-07-12 | Nitto Denko Corporation | Optical film and liquid-crystal display device |
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| JP2000251800A (en) * | 1999-02-26 | 2000-09-14 | Canon Inc | Spacer adhesion structure and its adhesive coating method in image display device |
| JP2005055641A (en) | 2003-08-04 | 2005-03-03 | Yokogawa Electric Corp | Liquid crystal display device |
| JP2006078714A (en) * | 2004-09-09 | 2006-03-23 | Nitto Denko Corp | Polarizing plate, its manufacturing method, and image display device using the polarizing plate |
| JP2007199409A (en) * | 2006-01-26 | 2007-08-09 | Fujifilm Corp | Optical film, polarizing plate and picture display device using the film |
| JP5033454B2 (en) * | 2006-03-29 | 2012-09-26 | 富士フイルム株式会社 | Optical film, polarizing plate, image display device, and optical film manufacturing method |
| JP2008268939A (en) * | 2007-03-27 | 2008-11-06 | Fujifilm Corp | Antiglare film, polarizing plate, and image display device |
| JP2009186957A (en) * | 2007-04-09 | 2009-08-20 | Sony Chemical & Information Device Corp | Resin composition and display device |
| EP2442178B1 (en) * | 2007-07-17 | 2018-08-29 | Dexerials Corporation | Method of producing an image display device |
| JP4924344B2 (en) * | 2007-10-01 | 2012-04-25 | コニカミノルタオプト株式会社 | Antiglare film, production apparatus thereof, antiglare antireflection film, polarizing plate, and display device |
-
2010
- 2010-08-26 JP JP2010189176A patent/JP5750848B2/en not_active Expired - Fee Related
-
2011
- 2011-08-19 WO PCT/JP2011/069240 patent/WO2012026560A1/en active Application Filing
- 2011-08-19 KR KR1020137007147A patent/KR101780849B1/en active IP Right Grant
- 2011-08-19 CN CN201180040558.7A patent/CN103097923B/en not_active Expired - Fee Related
- 2011-08-24 TW TW100130382A patent/TWI551660B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6141068A (en) * | 1997-06-13 | 2000-10-31 | Seiko Epson Corporation | Display devices, electronic apparatus using the same, and polarized light separator |
| US6917473B2 (en) * | 2000-01-13 | 2005-07-12 | Nitto Denko Corporation | Optical film and liquid-crystal display device |
| CN101680970A (en) * | 2007-05-23 | 2010-03-24 | 可隆株式会社 | Optical sheet |
| CN101971061A (en) * | 2008-01-10 | 2011-02-09 | 可隆工业株式会社 | Optical sheets |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140006774A (en) | 2014-01-16 |
| WO2012026560A1 (en) | 2012-03-01 |
| CN103097923A (en) | 2013-05-08 |
| TW201224091A (en) | 2012-06-16 |
| JP5750848B2 (en) | 2015-07-22 |
| TWI551660B (en) | 2016-10-01 |
| KR101780849B1 (en) | 2017-09-21 |
| JP2012047929A (en) | 2012-03-08 |
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