CN108603967A - The manufacturing method of polarizing film - Google Patents
The manufacturing method of polarizing film Download PDFInfo
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- CN108603967A CN108603967A CN201780009259.4A CN201780009259A CN108603967A CN 108603967 A CN108603967 A CN 108603967A CN 201780009259 A CN201780009259 A CN 201780009259A CN 108603967 A CN108603967 A CN 108603967A
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- Prior art keywords
- film
- latex
- mentioned
- optical thin
- thin film
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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
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of 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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- 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
Abstract
The present invention provides a kind of manufacturing method of polarizing film, with following process：Latex layer, and the process that the transfer film that optical thin film is formed on above-mentioned base material is produced on by drying are formed on base material；In the process that the above-mentioned optical thin film side surface of above-mentioned transfer film is bonded the polarizer；And the process from the above-mentioned above-mentioned base material of transfer film stripping, it is substantially insoluble when the latex for forming above-mentioned latex layer is mixed with 10 weight % with cyclohexanone, the surface energy of the above-mentioned latex layer side of formation of above-mentioned base material is 41.0~48.0mN/m, and the thickness of above-mentioned optical thin film is 1~10 μm.
Description
Technical field
The present invention relates to a kind of manufacturing methods of polarizing film.
Background technology
Polarizing film is the required component for constituting liquid crystal display device.Common polarizing film has in polyvinyl alcohol (PVA) class
It is fitted on the face or two faces of polarizing coating made of adsorbing the dichroism pigments such as iodo-complexes in resin and it being made to be orientated
The structure of optical thin film.
In recent years in liquid crystal display device, slimming and the positive rapid development of enlargement, and with environmental change and in liquid
The non-uniform problem of light occurs on the display surface of crystal device becomes apparent.
In the polarizing film as the required component of liquid crystal display device, slimming and enlargement are also developing, and become inclined
Shake piece deformation easily cause panel display failure situation.Specifically, it is believed that when polarizing film carries out flexible, be fitted in
The liquid crystal display panel warpage of polarizing film, in addition backlight assembly etc. also deform and panel made to be contacted with backlight assembly, to occur
Light is uneven.
In order to solve this problem, it is proposed that using the optical thin film formed by photoelastic coefficient small acrylic resin
Mode (patent document 1) etc..
And, it is proposed that containing acrylic resin and styrene resin and photoelastic coefficient is small, postpones big phase
Potential difference film and polarizing film (patent document 2)；Contain the big phase difference film (patent document 3) etc. of styrene resin, delay.
On the other hand, it is proposed that latex be suitable for adhesive linkage (patent document 4) between polaroid protective film and polarizer,
And it is combined with the transparent base protective film for polarizing plate low with latex layer and moisture permeability (patent document 5).
Conventional art document
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2009-122663 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2008-146003 bulletins
Patent document 3：Japanese Unexamined Patent Publication 2008-185659 bulletins
Patent document 4：No. 4352705 bulletins of Japanese Patent No.
Patent document 5：Japanese Unexamined Patent Publication 2008-256747 bulletins
Invention content
The invention technical task to be solved
It is having made intensive studies as a result, for disclosed in patent document 1 propylene acids film or patent document 2 in
Disclosed acrylicstyrene class film, their cementabilities with polarization layer and insufficient, meeting when due to being processed into shaped like chips
Stripping or rupture are generated in end face, therefore is easy to generate clast from the end face for the polarizing film processed, learns display performance
It is deteriorated.
The brittleness deficiency of phenylethylene film disclosed in patent document 3 increases film due to needing in film making process
Thickness, therefore be difficult to be set as small delay, to learn that display performance is deteriorated.
The film thickness of recorded latex with polarizer opposite side by having partially in patent document 4 and patent document 5
It shakes piece protective film and thickens, as a result learn that be easy to happen light uneven.
Project to be solved by this invention is, provides a kind of without deforming failure and can inhibit be installed to liquid crystal
The non-uniform polarizing film of light of the liquid crystal display device occurred with environmental change when showing device.
Means for solving technical task
In order to which the light for improving polarizing film is uneven, it is produced on the transfer that latex layer is formed on supporter as optical thin film
Film, and it was found that by being bonded optical thin film on the polarizer and removing supporter, so as to solve the above subject.
Specifically, the above subject can be solved by following methods.
[1]
A kind of manufacturing method of polarizing film, with following process：
Latex layer is formed on base material, and the transfer film that optical thin film is formed on above-mentioned base material is produced on by drying
Process；
In the process that the above-mentioned optical thin film side surface of above-mentioned transfer film is bonded polarizer；And
The process that above-mentioned base material is removed from above-mentioned transfer film,
It is substantially insoluble when the latex for forming above-mentioned latex layer is mixed with 10 weight % with cyclohexanone,
The surface energy of the above-mentioned latex layer side of formation of above-mentioned base material is 41.0~48.0mN/m,
The thickness of above-mentioned optical thin film is 1~10 μm.
[2]
The manufacturing method of polarizing film according to [1], wherein have in above-mentioned polarizer and optical thin film opposite side
There is protective film.
[3]
The manufacturing method of polarizing film according to [1] or [2], wherein above-mentioned polarizer is by polyvinyl alcohol resin shape
At.
In order to which the light for improving polarizing film is uneven, the relatively thin optical thin film of the liquid crystal display device side of polarizing film is effective
, further learn by optical thin film using the latex layer for being substantially not dissolved in cyclohexanone, it is uneven so as to improve light
Significant effect.It is speculated as being not easy to transmit week to polarizing film from the optical thin film that the latex for being substantially not dissolved in cyclohexanone is formed
The influence for the temperature humidity variation enclosed.
Specific implementation mode
Present disclosure is described in detail.Generation of the explanation for the constitutive requirements recorded below sometimes according to the present invention
Table embodiment and complete, but the present invention is not limited to this embodiments.In addition, in present specification, "~" is
It is used using the meaning for including as lower limiting value and upper limit value by the numerical value being recorded in before and after it.
＜ latex ＞
Latex is to indicate that resin is dispersed into the dispersion of particle shape in a dispersion medium.
As above-mentioned decentralized medium, such as water can be enumerated.
As latex, can be selected from propylene esters of gallic acid latex, metha crylic latex and phenylethylene latex.
Also, the latex can have 2 by the intramolecular at a kind or more in (a) alkadiene monomer, (b) vinyl monomer, (c)
A above vinyl, acryloyl group, methylacryloyl or allyl the monomer mixture that is formed of monomer in exist (d) by
Under conditions of the polymerizable chain transfer agents that α-methylstyrenedimer and other polymerizable chain transfer agents are formed, in an aqueous medium into
Copolymer emulsion obtained from row emulsion polymerization.
A kind of monomer for forming copolymer, which is (a) alkadiene monomer, can enumerate the butadiene as conjugated diene, isoamyl
Diene, chlorobutadiene etc. particularly preferably use butadiene.
The 2nd ingredient as copolymer is (b) vinyl monomer, as long as there is the monomer of vinyl originally, then it can be with
Using any monomer, preferably as monomer shown in following, styrene, acrylonitrile, methyl methacrylate, chloroethene can be enumerated
Alkene, vinyl acetate and their derivative, the Arrcostab of acrylic acid, acrylamide, Methacrylamide, methacrylaldehyde, methyl
Methacrylaldehyde, glycidyl acrylate, glycidyl methacrylate, acrylic acid 2- hydroxyl ethyl esters, methacrylic acid 2- hydroxyl second
It is ester, allyl acrylate, allyl methacrylate, N- methylolations acrylamide, N- methylolations Methacrylamide, different
Cyanic acid vinyl acetate, allyl isocyanate etc..
As the derivative of above-mentioned styrene, for example, can enumerate methyl styrene, dimethyl styrene, ethyl styrene,
Diethyl, isopropyl styrene, butylstyrene, hexyl styrene, cyclohexylstyrenes, decyl styrene, benzyl
Styrene, 1-chloro-4-methyl-benzene, trifluoromethyl styrene, ethoxyl methyl styrene, acetoxymethylstyrene, methoxyl group
Styrene, 4- methoxyl group -3- methyl styrenes, dimethoxy styrene, chlorostyrene, dichlorostyrene, trichlorostyrene, four
Chlorostyrene, pentachloro- styrene, bromstyrol, Dowspray 9, iodobenzene ethylene, fluorobenzene ethene, trifluorostyrene, the bromo- 4- of 2-
The fluoro- 3- trifluoromethyl styrenes of trifluoromethyl styrene, 4-, vinylbenzoate etc..
As preferred ester in the ester of acrylic acid, propylene acid esters, (methyl) glycidyl acrylate, (methyl) can be enumerated
Acrylic acid 2- hydroxyl ethyl esters.
Also, as copolymer the 3rd ingredient be (c) intramolecular with 2 or more vinyl, acryloyl group, first
The monomer of base acryloyl group or allyl, can enumerate divinylbenzene, 1,5- hexadiene -3- alkynes, hexatriene, divinyl ether,
Divinylsulfone, diallyl phthalate, diallyl methanol, dimethacrylate, trihydroxy methyl third
Alkane trimethyl acrylic ester, trimethylolpropane dimethacrylate etc. are usually added in polymerization of vinyl monomers so-called
Crosslinking agent.
The content of (a) diolefinic monomer in copolymer be copolymer total amount 10~60 mass %, especially preferably 15
~40 mass %.(b) vinyl monomer is 90~40 mass % of total amount, particularly preferred above-mentioned vinyl monomer, particularly benzene
Vinyl is to be copolymerized 70~40 mass % of total amount.(c) in the molecule with 2 or more vinyl, acryloyl group, methyl-prop
The single phase of enoyl- and allyl is 0.01~10 matter for the total of (a) diolefinic monomer and (b) vinyl monomer
Measure %, especially preferably 0.1~5 mass %.
As the α-methylstyrenedimer in (d) polymerizable chain transfer agents, there is (A) 2-4- diphenyl -4- methyl-1s -
Amylene, (B) 2-4- diphenyl -4- methyl -2- amylenes, (C) 1-1-3- trimethyl -3- phenyl indans are as isomers.As α-
Methyl styrene dimer object and preferably form be (A) ingredient be 40 mass % or more, (B) ingredient and/or (C) ingredient are 60 matter
Amount % is hereinafter, further preferably (A) ingredient be 50 mass % or more, (B) ingredient and/or (C) ingredient are 50 mass % hereinafter, especially
Preferably (A) ingredient is 70 mass % or more, (B) ingredient and/or (C) ingredient are 30 mass % or less for it.With the group of (A) ingredient
At the increase of ratio, chain tra nsfer excellent effect.
α-methylstyrenedimer can also contain impurity, such as not in the range of not damaging the purpose of the present invention
The α-methylstyrene of reaction, the a-Methylstyrene Low-Polymer in addition to above-mentioned (A), (B), (C) ingredient, α-methylstyrene
Polymer.It, then can be in synthesis α-methylstyrene two as long as not damaging its purpose when using α-methylstyrenedimer
After polymers, which is used with unpurified state.
(d) ratio of the α-methylstyrenedimer in polymerizable chain transfer agents be 2~100 mass %, preferably 3~
100 mass %, further preferably 5~95 mass %.When the ratio of the α-methylstyrenedimer is 2 mass % or more,
Adhesive strength and the excellent copolymer emulsion of resistance to blocking can be obtained, therefore preferably.Also, by using Alpha-Methyl benzene simultaneously
Ethylene dimerization object and other polymerizable chain transfer agents, can improve reactivity when polymerization.
It is 0.3~10 mass in the monomer mixture of every 100 mass parts about the usage amount of (d) polymerizable chain transfer agents
Part, preferably 0.5~7 mass parts.When the usage amount for being somebody's turn to do (d) polymerizable chain transfer agents is 0.3 mass parts or more, resistance to blocking will not
Difference, and when 10 is below mass part, adhesive strength will not decline, therefore preferably.In addition, about α-methylstyrenedimer
Usage amount is preferably used with the range of 0.1~5 mass parts in the monomer mixture of every 100 mass parts.
Then, as with other chain tra nsfers used at the same time of the α-methylstyrenedimer in (d) polymerizable chain transfer agents
Agent can use the well known polymerizable chain transfer agents used in general emulsion polymerization.Specifically, can for example enumerate octyl
Mercaptan, n-dodecyl mercaptan, tert-dodecylmercaotan, n-hexadecyl mercaptan, n-tetradecane base mercaptan, tertiary myristyl sulphur
The thio-alcohols such as alcohol；Dimethyl yellow ortho acid disulphide, auligen disulphide, diisopropyl xanthic acid disulphide etc.
Xanthic acid disulfides；Tetramethyl thiuram disulfide, Thiuram disulphide, tetrabutyl thiuram curing
The thiuram disulfides class such as object；The halogenated hydrocarbons such as carbon tetrachloride, ethylene bromide；The hydro carbons such as pentaphenylethane；And methacrylaldehyde,
Methacrolein, allyl alcohol, 2-ethylhexyl mercaptoacetate, terpinolene, α-terpinenes, γ-terpinenes, cinene etc..It
Can be used alone or combine two or more to use.It is preferable to use thio-alcohol, xanthic acid disulphide among them
Class, thiuram disulfides class, carbon tetrachloride etc..
Other than using above-mentioned monomer mixture and polymerizable chain transfer agents this point, copolymer emulsion can be by existing
Well known emulsion polymerization method manufactures.That is, can be caused by the way that monomer mixture and polymerization are added in the aqueous mediums such as water
Agent, emulsifier, polymerizable chain transfer agents etc. simultaneously carry out emulsion polymerization to obtain.
As the preferred concrete example of latex, styrene-butadiene copolymer, (methyl) acrylic acid-styrene-can be enumerated
Butadiene copolymer, (methyl) alkyl acrylate-(methyl) acrylic acid-styrene-butadiene copolymer and among the above
Copolymer etc. containing vinyl chloride.
As the latex in the present invention, commercially available product can be used, such as Narusuta SR-103 (NIPPON A＆ can be enumerated
L INC. manufacture), HALOFLEX 202 (Asahi Kasei Chemicals Corporation manufactures), VINIBRAN 2687
(Nissin Chemical Co., Ltd. manufacture).
＜ optical thin films ＞
Optical thin film used in the manufacturing method of the polarizing film of the present invention is mixed with 10 weight % with cyclohexanone
When, use substantial undissolved latex.It is substantially insoluble refer to, optical thin film is swollen in cyclohexanone without freely mixing
It closes.
Specifically, referring to that placement 24 is small after being mixed with cyclohexanone with 10 weight % after drying above-mentioned latex
When, when being then filtered with filter paper, the weight of remaining latex and the weight before being mixed with cyclohexanone as filtered residue
Amount is compared, the latex of residual rate of the dissolving less than 50%, and refers to the latex of substantially insoluble 50% or more residual rate.
It as the filter paper used in above-mentioned filtering, is not particularly limited, such as can enumerate and be recorded in JIS standards P
The filter paper such as No.1, No.5A in 3801.
This optical thin film for example may be difficult the temperature humidity variation that environment is assigned to polarizer.
The optical thin film used in manufacturing method for the polarizing film of the present invention, thickness are 1~10 μm, preferably
2~8 μm.When the thickness of optical thin film is 10 μm or less, optics can be inhibited uneven, therefore preferably.Also, when thickness is 1 μ
When m or more, from base material remove optical thin film process in optical thin film be not damaged, therefore preferably.
＜ base materials ＞
The base material used in manufacturing method for the polarizing film of the present invention, the surface energy for forming latex layer side are 41.0
~48.0mN/m, preferably 42.0~48.0mN/m.When surface energy is 48.0mN/m or less, in the peeling base from transfer film
Process in, can from optical thin film peeling base, therefore preferably.And when surface energy is 41.0mN/m or more, in base
The latex layer formed on material becomes uniform, and will not occur do not have the failure of latex layer on base material, therefore preferably.
The measurement of ＜ surface energies, computational methods ＞
The surface energy of base material can be utilized by known method according to the contact angle of the water of substrate surface and methylene iodine
Owens methods calculate.In the measurement of contact angle for example can use DM901 (Kyowa Interface Science Co.,
Ltd. it manufactures, contact angle meter).
Well known raw material can be suitably used in base material used in the manufacturing method of the polarizing film of the present invention.As
Raw material, can from polyester polymer, olefin polymer, cycloolefin polymer, (methyl) propylene acids polymers with
And it is selected in cellulosic polymer.Also, for the base material used in the manufacturing method of the polarizing film of the present invention, in order to adjust
It is shaped to the surface energy of latex layer side, can be suitably surface-treated.When reducing surface energy, such as it can carry out at corona
Reason, normal-temperature plasma processing, saponification process etc. when improving surface energy, can carry out silicone-treated, fluorine processing, olefin treated
Deng.
For the base material of the present invention, thickness is preferably 5~100 μm, more preferably 10~75 μm, further preferably 15
~55 μm.When the thickness of base material is 5 μm or more, since mechanical strength is not weak, it will not crimp, buckle when in use
Etc. failures, therefore preferably.Also, when the thickness of base material is 100 μm or less, peeling force when peeling base will not become
Greatly, and optical thin film will not be destroyed, therefore preferably.
The manufacturing method ＞ of ＜ transfer films
Transfer film used in the manufacturing method of the polarizing film of the present invention can be formed by existing method on base material
Latex layer and obtain.The method for forming latex layer can for example enumerate stick coating method, sealing modulus method, spray coating method and dip coating.
Latex layer is the film made of latex coating on base material, by the way that above-mentioned latex layer is dried, to latex
Layer contained in decentralized medium volatilization, resin particle welding and become film.In this way, gained film becomes optical thin film.
From the viewpoint of productivity and quality, the manufacturing method of transfer film of the invention is preferably coated with glue on base material
Breast and the method being dried.Latex coating on base material can it is preferable to use rod coating, seam die coatings.Also, base material energy
Enough use any one of sheet, web-like.
It, can be with the physical property pair of used latex in the drying of the latex layer of transfer film for making the present invention
It changes at any time with answering.When the glass transition temperature of known latex, preferably the drying temperature of latex layer compares glass transition temperature
Spend high 5 degree or more.
In view of the Film making properties of the transfer film of the present invention, preferably latex layer is dried with specified temperature, specifically,
Preferably 80 DEG C~200 DEG C, further preferably 100 DEG C~140 DEG C.
If it is 100 DEG C or more, can inviscid landform film forming, therefore preferably, by being set as 140 DEG C hereinafter, can
The non-uniform transfer of the latex layer of the deformation generation with base material is avoided, therefore preferably.
The making ＞ of ＜ polarizing films
Above-mentioned gained optical thin film can be used as the protective film of polarizing film.The polarizing film of the present invention can pass through well known side
Method makes.
Optical thin film is preferably implemented surface treatment and (is also recorded in Japanese Unexamined Patent Publication 6-94915 bulletins, Japanese Unexamined Patent Publication 6-
In No. 118232 bulletins) and make its hydrophiling, such as glow discharge process, Corona discharge Treatment or saponification process is preferably implemented
Deng.It, being capable of most preferably with Corona discharge Treatment as above-mentioned surface treatment.
＜ polarizers ＞
As polarizer, the polarizer preferably formed by polyvinyl alcohol resin, for example, polyvinyl alcohol film can be used
Polarizer etc. made of being impregnated in iodine solution and stretching.When using this polarizer, it can use by polyvinyl alcohol tree
The bonding agent that the aqueous solution of fat is formed, being directly fitted on a face of polarizer or two faces is made in the polarizing film of the present invention
The surface treatment face of above-mentioned optical thin film.As bonding agent, can use polyvinyl alcohol or Pioloform, polyvinyl acetal (for example,
Polyvinyl butyral) aqueous solution, polyvinyls (for example, butyl polyacrylate) latex, ultraviolet light (UV) solidification
Type bonding agent, from inhibit polarizing film deformation failure from the viewpoint of, it is preferable to use solution class bonding agent, most preferably completely
The aqueous solution of saponified polyvinyl alcohol.
For the polarizer of the present invention, thickness is preferably 1~50 μm, more preferably 5~25 μm.When the thickness of polarizer
When being 1 μm or more, shared iodine number will not increase in polarizer, to which mechanical strength does not reduce, and can obtain desired
Optical characteristics, therefore preferably.Also, when the thickness of polarizer is 50 μm or less, inclined caused by temperature humidity variation
Shake piece it is flexible in the ratio of contribution of shared polarizer will not become larger, can fully obtain the non-uniform suppression of light of the present invention
Effect processed, therefore preferably.
＜ protective films ＞
It is being fitted on the face of the face opposite side on polarizer with above-mentioned optical thin film, can further be bonded above-mentioned light
Film is learned, existing known protective film can also be bonded.
About above-mentioned existing known protective film, optical characteristics and material are not particularly limited, it can be it is preferable to use
(or being set as principal component) film containing cellulose ester resin, acrylic resin and/or cyclic olefin resin can use light
Isotropic film is learned, optically anisotropic phase difference film can also be used.
About above-mentioned existing known protective film, as the protective film containing cellulose ester resin, such as can utilize
FUJITAC TD40UC (FUJIFILM Corporation manufactures) etc..
About above-mentioned existing known protective film, as the protective film containing acrylic resin, can utilize comprising containing
The optical thin film of (methyl) acrylic resin of the styrene resin described in No. 4570042 bulletins of Japanese Patent No. includes
(methyl) acrylic resin with the glutarimide ring structures described in No. 5041532 bulletins of Japanese Patent No. on main chain
Optical thin film, include (methyl) acrylic acid with the lactone ring structure described in Japanese Unexamined Patent Publication 2009-122664 bulletins
The protective film of resinoid includes (methyl) with the glutaric anhydride unit described in Japanese Unexamined Patent Publication 2009-139754 bulletins
The protective film of acrylic resin.
Also, day can be utilized as the protective film containing cyclic olefin resin about above-mentioned existing known protective film
The cyclic olefin based resin film recorded after the paragraph [0029] of this special open 2009-237376 bulletins contains Japan Patent
The cyclic olefin tree of the additive of reduction Rth described in No. 4881827 bulletin, Japanese Unexamined Patent Publication 2008-063536 bulletins
Membrane of lipoprotein.
＜ liquid crystal display devices ＞
The liquid crystal display device of the present invention includes liquid crystal cells and the polarizing film of the present invention.
In the liquid crystal display device of the present invention, even if above-mentioned optical thin film is configured inside (the i.e. polarizer in polarizer
Between liquid crystal cells), any position in outside (i.e. with the face of the face opposite side of liquid crystal cell side), also can be suitably
It is used.In the liquid crystal display device of the present invention, preferably above-mentioned optical thin film configuration is in above-mentioned polarizer and above-mentioned liquid crystal list
Between member.
It is preferred that the liquid crystal display device of the present invention also has backlight, and the configuration of above-mentioned polarizing film in above-mentioned backlight side or regards
Feel identification side.It as backlight, is not particularly limited, well known backlight can be used.It is preferred that the liquid crystal display device of the present invention
It is laminated with the sequence of backlight, backlight side polarizing film, liquid crystal cells, visuognosis side polarizing film.
About other structures, any structure in well known liquid crystal display device can be used.Side about liquid crystal cells
Formula (pattern) it is not also specifically limited, can be configured to the liquid crystal cells of TN (twisted-nematic (Twisted Nematic)) mode,
Transverse electric field switches liquid crystal cells, the FLC (ferroelectric liquid crystals of IPS (coplanar conversion (In-Plane Switching)) mode
(Ferroelectric Liquid Crystal)) mode liquid crystal cells, AFLC (anti ferroelectric liquid crystal (Anti-
Ferroelectric Liquid Crystal)) liquid crystal cells, the OCB (optical compensation curved (Optically of mode
Compensatory Bend)) liquid crystal cells of mode, STN (super twisted nematic (Supper Twisted Nematic)) mode
Liquid crystal cells, VA (vertical orientation (Vertically Aligned)) mode liquid crystal cells and HAN (mixing arrangement nematic
(Hybrid Aligned Nematic)) mode the various display modes such as liquid crystal cells liquid crystal display device.Wherein, this hair
In bright liquid crystal display device, preferably above-mentioned liquid crystal cells are IPS modes.
About other structures, additionally it is possible to using the arbitrary structures in well known liquid crystal display device.
Embodiment
The present invention is further specifically described in embodiment exemplified below.Material, usage amount shown in following embodiment,
Ratio, process content, processing step etc. can be changed suitably without departing from the scope of spirit of the present invention.Therefore,
The scope of the present invention is not limited to concrete example as shown below.
Dissolubility of the ＜ latex in cyclohexanone evaluates ＞
The latex that 10mL tables 1 are respectively added into the glass container of 50mL, in explosion-proof oven (Tabai Espec C
Orporat ion manufactures, SPHH-202) in, it is 8 hours dry with 70 DEG C, to obtain latex block.Then, addition cyclohexanone with
Latex block is set to become 10 weight %, after being covered, Stirring 12 hours on ball mill turntable, then to latex in ring
Dissolubility in hexanone has carried out visual valuation.The case where latex block is swollen in a reservoir is evaluated as " substantially insoluble ",
And it will be evaluated as " dissolving " the case where latex block be not present in container.
Moreover, taking the latex block that about 1g is dried, and cyclohexanone is added so that latex block becomes 10 weight %, after being covered
It places 24 hours, is filtered under diminished pressure using No.5A filter paper (ADVANTEC Corp. are manufactured, diameter 110mm) and Buchner funnel,
Further with 500g cyclohexanone on filter paper residue and filter paper cleaned.By filter paper and residue at 120 DEG C,
It is dried while taking a breath in explosion-proof oven 16 hours, then determines the quality of filter paper and residue.
To the weight of filter paper and latex block before the weight of filter paper and residue for using and having dried in filtering and filtering
Amount is compared, to determine the residual rate of latex block weight.Latex by w residual rate less than 50% is evaluated as " essence
It is upper insoluble ".
In addition, residual rate is indicated with following formula (1).
Residual rate (%)=(weight of filtered residue)/(weight of used latex block) × 100
Formula (1)
[table 1]
The surface energy of ＜ base materials evaluates ＞
By the base material described in table 2 after 25 DEG C, the adjustment 2 hours of relative humidity 55% time, using contact angle meter (DM700,
Manufactured by Kyowa Interface Science Co., Ltd.) it is measured relative to water and methylene on the face that latex layer forms side
The contact angle of base iodine.Surface energy is evaluated using Owens methods.
[table 2]
The base material used in table 2 is as follows.
A4100 manufactures 75 μm of PET resin film thickness by Toyobo Co., Ltd.s
50 μm of M5070 Daicel Corporation manufacture PET resins film thickness
TD40UC manufactures (FUJITAC TD40UC) triacetyl cellulose resin film by FUJIFILM Corporation
It is 40 μm thick
TR-1 manufactures 50 μm of PET resin film thickness by Unitika Ltd.
The making ＞ of ＜ transfer films
From on the base material selected in table 2 using the latex that is selected from table 1, and the group of the latex and base material using table 3
It closes, latex layer is formed with stick coating method latex coating, it is further 10 minutes dry at 70 DEG C, have on base material to make
There is the transfer film of optical thin film.
The film thickness of above-mentioned optical thin film is set as the film thickness described in the transfer film of table 3.
The making ＞ of ＜ polarizing films
By acetyl cellulose film (FUJIFILM Corporation manufactures, FUJITAC TD40UC) in temperature adjustment to 37 DEG C
1.5mol/L sodium hydrate aqueous solution (saponification solution) in dipping 1 minute after film is washed, later,
Again by water washing bath after being impregnated in the aqueous sulfuric acid of 0.05mol/L 30 seconds.Then, it is repeated 3 times and is carried out by air knife
Water removal, water droplet fallen behind in 70 DEG C of dry section be detained and 15 seconds and make it dry, to prepare to have carried out saponification process
Protective film.Also, sided corona treatment is carried out to the optical thin film side of the transfer film by above-mentioned preparation, to make (output
100W, processing speed 3.2m/ minutes) carry out the transfer film of hydrophilicity-imparting treatment.
The making ＞ of ＜ polarizers
According to the embodiment 1 of Japanese Unexamined Patent Publication 2001-141926 bulletins, difference is assigned between two pairs of nip rolls,
It is stretched to long side direction, to make the polarizer that thickness is 12 μm.
＜ is bonded ＞
In this way, polarizer, the above-mentioned transfer film being surface-treated and having carried out above-mentioned saponification process obtained by use
Protective film, be used in combination they be clamped first polarizers after, use polyvinyl alcohol (Kuraray Co., Ltd.s manufacture, PVA-
117H) 3% aqueous solution is as bonding agent, and to roll up in such a way that the absorption axiss of polarization layer become parallel with the long side direction of film
Volume is laminated.Here, the sided corona treatment face of any transfer film described in the table 3 of the side film of polarization layer is made to become
Polarization layer side makes other side film become above-mentioned acetyl cellulose film.
Then, after being dried at 70 DEG C, the continuous base material for removing transfer film, further coating adhesive and make
Polarizing film.
＜ evaluates (installation to IPS type liquid crystal display devices) ＞ to the installation of liquid crystal display device
LCD TV (gap be 0.5mm) between slim 55 type LCD TV, backlight and unit as IPS patterns
Back side polarizing film, by the polarizing film of above-mentioned making in such a way that the optical thin film side of above-mentioned making is configured in liquid crystal cell side every
It adhesive and fits on liquid crystal cells.Gained LCD TV is kept in the environment of 50 DEG C, relative humidity 85% 3 days it
Afterwards, 25 DEG C are transferred to, in the environment of relative humidity 60%, maintaininged lights under black display state, and carry out after 48 hrs
It visually observes, is evaluated to uneven to light.(the uneven level of light of the positive direction after endurance test)
Observation carried out from device front from when black display when light it is uneven (in other words, be brightness disproportionation),
And it is evaluated by following benchmark.
AA：Under illumination 20lx environment almost non-visuognosis to unevenness
A：Under illumination 100lx environment almost non-visuognosis to unevenness
B：Visuognosis is to shallower unevenness under illumination 100lx environment
C：Visuognosis is to specific uneven under illumination 100lx environment
D：Visuognosis is to specific uneven under illumination 300lx environment
E：Defect is more, has not been able to the non-uniform evaluation of light for carrying out liquid crystal display device.
What there is no problem in actual use is AA benchmark, A benchmark, B benchmark, preferably AA benchmark and A benchmark.
Evaluation result is summarized into note in table 3.
[table 3]
Also, the coating of transfer film, the fissility of base material are evaluated by following benchmark.
The coating of transfer film is evaluated
Optical thin film is uniform, does not see failure in appearance：There is no problem
Optical thin film is uneven, and the part of not latex layer is seen on base material：Repel latex
What there is no problem in the quality of polarizing film is the evaluation of " there is no problem ".
The fissility of base material is evaluated
In polarizing film after peeling base, defect is not seen on optical thin film：There is no problem
In polarizing film after peeling base, rupture is seen on optical thin film：Optical thin film is destroyed
What there is no problem in the quality of polarizing film is the evaluation of " there is no problem ".
According to above-mentioned table 3, learn that the deformation failure for the polarizing film that the manufacturing method of polarizing film through the invention obtains is few,
And the light of the liquid crystal display device occurred with environmental change when being installed to liquid crystal display device can be inhibited uneven.
Industrial availability
In accordance with the invention it is possible to provide a kind of without deforming failure and the companion when being installed to liquid crystal display device can be inhibited
The non-uniform polarizing film of light of the liquid crystal display device occurred with environmental change.
It is described the invention in detail with reference to particular implementation, those skilled in the art are illustrated certainly not to be departed from
In the spirit and scope of the present invention, it can make various changes or correct.
The application was based on 2 months 2016 Japanese patent application (Japanese patent application 2016-020819 filed in 5 days
Number) and on December in 2016 22 filed in Japanese patent application (Japanese patent application the 2016-250145th), content
As with reference in the income present invention.
Claims (3)
1. a kind of manufacturing method of polarizing film, with following process：
Latex layer is formed on base material, and the work for the transfer film for being formed with optical thin film on the substrate is made by drying
Sequence；
In the process that the optical thin film side surface of the transfer film is bonded the polarizer；And
The process that the base material is removed from the transfer film,
It is substantially insoluble when the latex for forming the latex layer is mixed with 10 weight % with cyclohexanone,
The surface energy of the formation latex layer side of the base material is 41.0~48.0mN/m,
The thickness of the optical thin film is 1~10 μm.
2. the manufacturing method of polarizing film according to claim 1, wherein
There is protective film in the polarizer and optical thin film opposite side.
3. the manufacturing method of polarizing film according to claim 1 or 2, wherein
The polarizer is formed by polyvinyl alcohol resin.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-020819 | 2016-02-05 | ||
| JP2016020819 | 2016-02-05 | ||
| JP2016250145A JP6637879B2 (en) | 2016-02-05 | 2016-12-22 | Manufacturing method of polarizing plate |
| JP2016-250145 | 2016-12-22 | ||
| PCT/JP2017/003815 WO2017135378A1 (en) | 2016-02-05 | 2017-02-02 | Polarization plate manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108603967A true CN108603967A (en) | 2018-09-28 |
| CN108603967B CN108603967B (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780009259.4A Active CN108603967B (en) | 2016-02-05 | 2017-02-02 | Method for manufacturing polarizing plate |
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| Country | Link |
|---|---|
| JP (1) | JP6637879B2 (en) |
| KR (1) | KR102101687B1 (en) |
| CN (1) | CN108603967B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108603967B (en) * | 2016-02-05 | 2020-08-21 | 富士胶片株式会社 | Method for manufacturing polarizing plate |
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| WO2019098159A1 (en) * | 2017-11-15 | 2019-05-23 | 富士フイルム株式会社 | Method for manufacturing polarizing plate, method for manufacturing liquid crystal display device, and optical film |
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| CN101151306A (en) * | 2005-02-01 | 2008-03-26 | 埃西勒国际通用光学公司 | Process for applying a coating onto a surface of a lens substrate |
| JP2015096579A (en) * | 2013-11-15 | 2015-05-21 | 日東電工株式会社 | Water dispersion type adhesive composition for optical film, adhesive layer, adhesive optical film and image display device |
| CN104765091A (en) * | 2015-02-13 | 2015-07-08 | 厦门天马微电子有限公司 | Converting film, manufacturing method thereof, electronic device and manufacturing method of electronic device |
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| JP2983734B2 (en) * | 1991-12-24 | 1999-11-29 | ダイセル化学工業株式会社 | Polystyrene resin film |
| US6630289B1 (en) * | 2000-08-22 | 2003-10-07 | The Hong Kong University Of Science And Technology | Photo-patterned light polarizing films |
| JP4352705B2 (en) * | 2003-01-14 | 2009-10-28 | コニカミノルタホールディングス株式会社 | Polarizing plate protective film, polarizing plate and liquid crystal display device using the same |
| JP4586511B2 (en) * | 2004-11-25 | 2010-11-24 | テクノポリマー株式会社 | Thermoplastic resin composition and molded article |
| JP5057807B2 (en) * | 2006-09-14 | 2012-10-24 | 旭化成イーマテリアルズ株式会社 | Retardation film containing acrylic resin and styrene resin |
| JP5191667B2 (en) * | 2007-01-29 | 2013-05-08 | 旭化成イーマテリアルズ株式会社 | Styrene resin anisotropic film |
| JP2008256747A (en) * | 2007-03-30 | 2008-10-23 | Fujifilm Corp | Protection film for polarizing plate, its manufacturing method, polarizing plate and liquid crystal display device |
| KR101161600B1 (en) * | 2007-10-22 | 2012-07-03 | 가부시키가이샤 닛폰 쇼쿠바이 | Polarizing plate, method for producing the same, optical film and image display device |
| JP5477211B2 (en) * | 2010-07-23 | 2014-04-23 | 大日本印刷株式会社 | Polarized sheet laminate |
| JP2013141820A (en) * | 2012-01-12 | 2013-07-22 | Toagosei Co Ltd | Production process of optical film or sheet |
| TW201504367A (en) * | 2013-06-10 | 2015-02-01 | Fujifilm Corp | Polarizing plate and production method thereof, and transfer material for production of polarizing plate and production method thereof |
| JP6699133B2 (en) * | 2015-10-30 | 2020-05-27 | コニカミノルタ株式会社 | Optical film and manufacturing method thereof |
| JP6637879B2 (en) * | 2016-02-05 | 2020-01-29 | 富士フイルム株式会社 | Manufacturing method of polarizing plate |
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- 2016-12-22 JP JP2016250145A patent/JP6637879B2/en active Active
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- 2017-02-02 CN CN201780009259.4A patent/CN108603967B/en active Active
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|---|---|---|---|---|
| CN101151306A (en) * | 2005-02-01 | 2008-03-26 | 埃西勒国际通用光学公司 | Process for applying a coating onto a surface of a lens substrate |
| JP2015096579A (en) * | 2013-11-15 | 2015-05-21 | 日東電工株式会社 | Water dispersion type adhesive composition for optical film, adhesive layer, adhesive optical film and image display device |
| CN104765091A (en) * | 2015-02-13 | 2015-07-08 | 厦门天马微电子有限公司 | Converting film, manufacturing method thereof, electronic device and manufacturing method of electronic device |
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| CN108603967B (en) * | 2016-02-05 | 2020-08-21 | 富士胶片株式会社 | Method for manufacturing polarizing plate |
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| JP6637879B2 (en) | 2020-01-29 |
| CN108603967B (en) | 2020-08-21 |
| KR20180097716A (en) | 2018-08-31 |
| KR102101687B1 (en) | 2020-04-17 |
| JP2017142489A (en) | 2017-08-17 |
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