CN104694052B - Light-diffusing adhesive layer and light-diffusing adhesive film - Google Patents
Light-diffusing adhesive layer and light-diffusing adhesive film Download PDFInfo
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- CN104694052B CN104694052B CN201410667609.4A CN201410667609A CN104694052B CN 104694052 B CN104694052 B CN 104694052B CN 201410667609 A CN201410667609 A CN 201410667609A CN 104694052 B CN104694052 B CN 104694052B
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- diffusion bonding
- oxidant layer
- light diffusion
- methyl
- monomer
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- 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
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
-
- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention provides a light-diffusing adhesive layer which is an optical component capable of replacing a previous light diffusion plate. The light-diffusing adhesive layer has functions of diffusing sheets and an anti-static function, and thinning of the thickness of a display is realized. The invention also provides a light-diffusing adhesive film. The light-diffusing adhesive layer is formed by an adhesive containing copolymers, cross-linking agents, silicon-type particles, and anionic compounds whose melting point is 25 to 50 DEG C. The copolymers contain at least more than one kind of (meth)alkyl acrylate in which carbon number of alkyl is C1-C14, and at least more than one selected from copolymerized monomers containing hydroxyl, copolymerized monomers containing carboxyl, monomers containing azo-vinyl, and monomers containing aromatic, and the monomers are used as monomers containing copolymerizable functional groups. The transmittance of the light-diffusing adhesive layer is more than 90%, haze value is more than 40%, refractive index is more than 1.47, and surface resistivity is lower than 1.0*10<12> [omega]/ square.
Description
Technical field
The present invention relates to a kind of smooth diffusion bonding oxidant layer and use the light diffusion bonding of the light diffusion bonding oxidant layer
Film.More specifically, it is an object of the invention to provide a kind of material up and down of the Polarizer being mainly used in liquid crystal display
Interlayer and fixed opticses light diffusion bonding oxidant layer and light diffusion bonding film.One kind is to provide especially by making to glue
Knot layer has the function of the light diffusing sheet on backlight of LCD, even if thus can obtain also keeping without light diffusing sheet
Performance as display and then filming (slimming of display) speciality can be realized due to not using light diffusing sheet
Light diffusion bonding oxidant layer and light diffusion bonding film.Also, also provide a kind of in order to the reprocessing such as re-paste from bonding sheet
The circuit of display is protected in electrostatic produced by operation and anti-static function is given to the tack coat with light diffusion function
Light diffusion bonding oxidant layer and light diffusion bonding film.
Background technology
In recent years, the manufacture of the liquid crystal display centered on medium and small-sized, sales volume gradually increase.Separately
Outward, along with the increase to medium and small-sized liquid crystal displays demand, constantly require display device structure further simplify and
The filming of opticses, so as to reducing manufacturing cost and realizing the slimming of display floater thickness.
For above-mentioned problem, in order to pass through adhesive layer by optical member adherings such as Polarizer, polarizers in liquid crystal list
In the adherend such as unit, it has been proposed that the various adhesive films with good adhesion power (for example, referring to patent documentation 1～2).
Record in patent documentation 1 and a kind of butyl acrylate etc. as the monomer of main component and has been contained into acrylamide
The optics adhesive composition of compound etc..
Recorded in patent documentation 2 it is a kind of using (methyl) acrylate with the alkyl that carbon number is 4～8 as master
Want the monomer and the optics adhesive composition with carboxylic monomer and nitrogenous vinyl monomer of composition.
In addition, it is proposed that in order to improve the refractive index of adhesive layer and through study repeatedly various adhesive films (for example, join
According to patent documentation 3～9).
Record a kind of optics with aromatic ring and containing the viscosifier that refractive index is 1.51～1.75 to use in patent documentation 3
Adhesive composition.
A kind of bonding sheet including the adhesive composition containing combined polymerization polymer has been recorded in patent documentation 4, it is described
Combined polymerization polymer is the combined polymerization polymer of the acrylic acid modified monomer containing aromatic ring.
Record a kind of including the tackifying resin containing aromatic ring and the optics of aromatic phosphoric acid esters plasticizer in patent documentation 5
Use adhesive composition.
A kind of binding agent solidified by adhesive composition, the adhesive composition have been recorded in patent documentation 6
Including：Acrylic resin；And the aromatic compound containing an ethylene unsaturated group.
Recorded in patent documentation 7 it is a kind of by the acrylic adhesive containing aromatic monomer by phase retardation film and two-fold
Penetrate the optical element that plate interfixes.
A kind of adhesive composition containing polyurethane resin is recorded in patent documentation 8, the polyurethane resin is to make
Aromatic diisocyanate and the reaction of aromatic polyester glycol are formed.
One kind is recorded in patent documentation 9 and has added the crosslinking such as isocyanates in the adhesion resins such as acrylate copolymer
Light diffusing adhesive composition obtained from agent and the light diffusing agent that is made up of resin particles such as styrene resin beads.
A kind of light diffusing adhesive composition is Patent Document 10 discloses, wherein, including：Containing by acrylic compounds
The water serial emulsion of the polymer particle constituted by copolymer, organic based fine particles (wherein excluding aforementioned polymer particle), firming agent
And quaternary ammonium compound.
In recent years, in order to realize the filming of opticses, as the adhesive film that the interlayer for opticses is fitted,
Ask its be adhesive layer thickness of thin to less than 20 μm adhesive film.
Generally, the cohesive force of adhesive layer and the thickness of adhesive layer are generally proportionate, therefore, if by the thickness of adhesive layer
Degree is thinning, then cohesive force can be caused therewith to reduce.
But, require that adhesive film has following performance in recent years：Even if by the lower thickness of adhesive layer, it may have with
The equal cohesive force of past adhesive film (adhesive layer is the thick-layer of about 30 μm of thickness), and under high temperature, high humidity environment
For durability after long-time placement, it may have the performance more than equal with conventional adhesive film.
In addition, from the lower thickness that can make adhesive layer and can form that need not to implement Ageing Treatment (real at a constant temperature
Apply ripening) adhesive layer from the viewpoint of, it is desirable to be formed as the form of NCF (Non Carrier Film, non-bearing film), its
The part for being only made up of the adhesive layer eliminated after bonding film base material and having " mold release film/adhesive layer/mold release film " is constituted.
In addition, in conventional adhesive film, due to implementing Ageing Treatment after adhesive film of fitting in adherend, therefore,
The tack between adherend and adhesive layer can be improved.
But, for the adhesive film using NCF forms, the Ageing Treatment due to having been completed adhesive layer, therefore
Tack between adherend and adhesive layer is not enough.Based on this, existing needs the surface to adherend to carry out at corona
The problem of the surface treatments such as reason.
Therefore need a kind of adhesive film for meeting these requirements and overcoming these problems.Prior art literature
Patent documentation
Patent documentation 1：Japanese Unexamined Patent Publication 2012-177022 publications
Patent documentation 2：Japanese Unexamined Patent Publication 2012-201734 publications
Patent documentation 3：Japanese Unexamined Patent Publication 2007-084762 publications
Patent documentation 4：Japanese Unexamined Patent Publication 2011-153169 publications
Patent documentation 5：Japanese Unexamined Patent Publication 2012-167188 publications
Patent documentation 6：Japanese Unexamined Patent Publication 2012-021148 publications
Patent documentation 7：Japanese Unexamined Patent Publication 2006-293281 publications
Patent documentation 8：Japanese Unexamined Patent Publication 2009-091522 publications
Patent documentation 9：Japanese Unexamined Patent Publication 07-216328 publication
Patent documentation 10：Japanese Unexamined Patent Publication 2010-053347 publications
The content of the invention
Invention problem to be solved
The problem of the present invention is to provide a kind of smooth diffusion bonding oxidant layer and light diffusion bonding film, wherein, the light spreads
Adhesive layer is to substitute the opticses used by conventional light diffusing sheet, and which has the function of light diffusing sheet and resists quiet
Electricity Functional, and the slimming of display thickness can be realized.
The method for solving problem
In order to solve above-mentioned problem, the technological thought of the light diffusion bonding oxidant layer of the present invention is, by comprising copolymer,
Cross-linking agent, silicon particle and fusing point be the adhesive layer of 25～50 DEG C of ionic compound forming light diffusion bonding oxidant layer,
Wherein, the copolymer is included：The carbon number of alkyl is at least in (methyl) alkyl acrylate monomer of C1～C14
More than kind；And the combined polymerization monomer of hydroxyl, carboxylic copolymerization are selected from as the monomer containing copolymerizable functional group
Close property monomer, nitrogenous vinyl monomer, containing at least one in aromatic monomer more than.
In addition, in order to solve above-mentioned problem, the present invention provides a kind of smooth diffusion bonding oxidant layer, and which is with light diffusion function
Light diffusion bonding oxidant layer, the smooth diffusion bonding oxidant layer by containing copolymer, cross-linking agent, silicon class particle and fusing point be 25～
The adhesive composition of 50 DEG C of ionic compound is formed,
The copolymer is included：The carbon number of alkyl for C1～C14 (methyl) alkyl acrylate monomer in extremely
Lack more than one, and as the monomer containing copolymerizable functional group selected from the combined polymerization monomer by hydroxyl, containing carboxyl
Combined polymerization monomer, it is more than at least one in nitrogenous vinyl monomer and the group that constituted containing aromatic monomer,
And, the transmitance of the smooth diffusion bonding oxidant layer is more than 90%, and haze value is more than 40%, and refractive index is
More than 1.47, surface resistivity is 1.0 × 1012Ω/below.
Additionally, it is preferred that the cohesive force when thickness of aforementioned smooth diffusion bonding oxidant layer is 20 μm relative to glass plate is 2.0N/
More than 25mm.
Additionally, it is preferred that foregoing adhesives compositionss be relative to 100 weight portions copolymer contain 0.01～5 weight portion work
For the isocyanate compound of cross-linking agent, the silicon class particle of 0.1～20 weight portion, the ionic compound of 0.1～5 weight portion and
Into, wherein, the copolymer be by alkyl carbon number for C1～C14 (methyl) alkyl acrylate monomer at least
More than one, and as the monomer containing copolymerizable functional group selected from hydroxyl combined polymerization monomer, carboxylic common
Polymerizable monomer, nitrogenous vinyl monomer and containing aromatic monomer in weight average molecular weight at least one formed above be 20
～250 ten thousand copolymer.
Additionally, it is preferred that the haze value of aforementioned smooth diffusion bonding oxidant layer is more than 40% and less than 90%.
Additionally, it is preferred that aforementioned silicon class particle be selected from by silicon dioxide granule, silicon dioxide tripolycyanamide core-shell particles,
One or more of group that silicone particle is constituted.
In addition, the present invention provides a kind of smooth diffusion bonding film, which is to form the smooth diffusion bonding in the one side of mold release film
Oxidant layer form and the composition with mold release film/light diffusion bonding oxidant layer/mold release film light diffusion bonding film.
In addition, the present invention provides a kind of smooth diffusion bonding film, which is the aforementioned smooth diffusion bonding agent of one side stacking in base material
The light diffusion bonding film of layer.
In addition, the present invention provides a kind of Polarizer peripheral components adhesive film for having used aforementioned smooth diffusion bonding film.
In addition, the present invention provides a kind of interlayer between Polarizer and brightness enhancement film has used aforementioned smooth diffusion bonding oxidant layer
Adhesive film.
In addition, the present invention provides a kind of blooming with adhesive layer, which is laminated at least one face of blooming
There is aforementioned smooth diffusion bonding oxidant layer.
Invention effect
Based on the present invention, using the teaching of the invention it is possible to provide a kind of smooth diffusion bonding oxidant layer and used the light of the light diffusion bonding oxidant layer to expand
Scattered adhesive film, the smooth diffusion bonding oxidant layer are to overcome conventional requirement item and problem to expand so as to substitute conventional light
Fall apart the opticses for being used, and the function with light diffusing sheet and anti-static function and can realize the thin of display thickness
Type.
Specific embodiment
Below, based on the preferred embodiment explanation present invention.
The light diffusion bonding oxidant layer of the present invention is the light diffusion bonding oxidant layer with light diffusion function, aforementioned smooth diffusion bonding
Oxidant layer is combined by the binding agent containing acrylic polymer, silicon class particle and ionic compound that fusing point is 25～50 DEG C
Being formed, the transmitance of aforementioned smooth diffusion bonding oxidant layer is more than 90% to thing, and haze value is more than 40%, refractive index be 1.47 with
On, surface resistivity is 1.0 × 1012Ω/below.
Additionally, it is preferred that the haze value of aforementioned smooth diffusion bonding oxidant layer is more than 40% and less than 90%.Additionally, it is preferred that aforementioned
Light diffusion bonding oxidant layer is 25～50 DEG C by copolymer (acrylic polymer), cross-linking agent, silicon class particle and fusing point is contained
Ionic compound adhesive composition being formed, and the copolymer (acrylic polymer) is included：The carbon of alkyl
Atomic number for C1～C14 (methyl) alkyl acrylate monomer at least one more than；And as containing copolymerizable official
Can group monomer selected from the combined polymerization monomer by hydroxyl, carboxylic combined polymerization monomer, nitrogenous vinyl monomer and
It is more than at least one in the group constituted containing aromatic monomer.
In addition, in foregoing adhesives compositionss, preferably with respect to the acrylic polymer (copolymerization of adhesive composition
Thing) 100 weight portions, the carbon number of the alkyl containing 50～99 weight portions is (methyl) alkyl acrylate list of C1～C14
It is more than at least one in body, and 1～50 weight portion as containing copolymerizable functional group monomer selected from by hydroxyl
In combined polymerization monomer, carboxylic combined polymerization monomer, nitrogenous vinyl monomer and the group constituted containing aromatic monomer
It is at least one more than the monomer containing functional group；Also, for the mixing ratio of the aforementioned monomer containing functional group, relative to
100 weight portions as the (methyl) alkyl acrylate monomer of main component, alkyl carbon number for C1～C14 (first
Base) alkyl acrylate monomer, coordinate the combined polymerization monomer of hydroxyl of 0.1～50 weight portion, 0～5 weight portion (when containing
When be 0.1～5 weight portion) carboxylic combined polymerization monomer, 0～50 weight portion (when containing sometimes be 0.1～50 weight portion)
Nitrogenous vinyl monomer and 0～30 weight portion (when containing sometimes be 0.1～30 weight portion) containing aromatic monomer.
In addition, relative to 100 weight portion copolymers, preferably comprising the Carbimide. as cross-linking agent of 0.01～5 weight portion
Ester compounds, the silicon class particle of 0.1～20 weight portion, the ionic compound of 0.1～5 weight portion.
It is (methyl) alkyl acrylate monomer of C1～C14 as the carbon number of alkyl, can enumerates：(methyl) propylene
Sour methyl ester, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl) butyl acrylate,
(methyl) Isobutyl 2-propenoate, (methyl) amyl acrylate, (methyl) Hexyl 2-propenoate, (methyl) heptylacrylate, (methyl)
1-Octyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) 2-EHA, (methyl) acrylic acid nonyl ester, (methyl)
The different nonyl ester of acrylic acid, (methyl) decyl acrylate, (methyl) acrylic acid hendecane base ester, (methyl) dodecylacrylate,
(methyl) tridecyl acrylate, (methyl) acrylic acid tetradecane base ester, (methyl) acrylic acid ring pentyl ester, (methyl) acrylic acid
It is more than at least one in cyclohexyl etc..Alkyl in (methyl) alkyl acrylate monomer can be straight-chain, branched, ring
Any one in shape.100 weight portion of acrylic polymer (copolymer) relative to adhesive composition, preferred alkyl
Carbon number is 50～99 weight portions for the mixing ratio of (methyl) alkyl acrylate monomer of C1～C14.
As combined polymerization sex ethylene base monomer (containing aromatic monomer) containing aryl, (methyl) acrylic acid can be enumerated
Benzyl ester, (methyl) acrylic acid naphthalene ester, (methyl) phenoxyethyl acrylate, (methyl) acrylic acid benzene oxygen butyl ester, (methyl) acrylic acid
2- (1- naphthoxys) ethyl ester, (methyl) acrylic acid 2- (2- naphthoxys) ethyl ester, (methyl) acrylic acid 6- (1- naphthoxys) own ester,
(methyl) acrylic acid 6- (2- naphthoxys) own ester, (methyl) acrylic acid 8- (1- naphthoxys) monooctyl ester, (methyl) acrylic acid 8- (2- naphthalenes
Epoxide) monooctyl ester etc. contains aromatic acrylic monomer, styrene etc. and contains aromatic vinyl monomer.In order to obtain refractive index
High adhesive layer, it is preferred coordinate at least more than one containing aromatic monomer.
By these to be contained aromatic monomer with the atomic number of alkyl carbon as main component monomer for C1～C14's
(methyl) alkyl acrylate monomer is mixed, and the refractive index of the light diffusion bonding oxidant layer obtained by can adjusting is improved, and is subtracted
Refractivity between little opticses, reduces total reflection, thus, it is possible to improve total light transmittance.It is viscous in the light diffusion of the present invention
Knot oxidant layer in, when adhesive composition is included containing aromatic monomer, relative to 100 weight portions as main component (first
Base) in alkyl acrylate monomer, the content preferably containing aromatic monomer is 0.1～30 weight portion, more preferably content be 5～
30 weight portions.
As nitrogenous vinyl monomer, for example, can enumerate NVP, N- caprolactams, (first
Base) the ring-type nitrogen vinyl compound such as acryloyl morpholine；N- ethyl-N-methyls (methyl) acrylamide, N- Methyl-N-propyls
(methyl) acrylamide, N- methyl-N-isopropyls (methyl) acrylamide, N, N- dimethyl (methyl) acrylamide, N, N- bis-
Ethyl (methyl) acrylamide, N, N- dipropyl (methyl) acrylamide, N, N- diisopropyls (methyl) acrylamide, N, N- bis-
The dialkyl group such as butyl (methyl) acrylamide replace (methyl) acrylamide；(methyl) acrylic acid N- ethyl-N-methyl ammonia ethyl esters,
(methyl) acrylic acid N- Methyl-N-propyl ammonia ethyl esters, (methyl) acrylic acid N- methyl-N-isopropyl ammonia ethyl esters, (methyl) propylene
Sour N, N- dimethylamino methyl ester, (methyl) acrylic acid N, N- dimethylamino ethyl esters, (methyl) acrylic acid N, N- dimethylamino propyl ester,
(methyl) acrylic acid N, N- dimethylamino butyl ester, (methyl) acrylic acid N, N- dipropyl ammonia ethyl esters, (methyl) acrylic acid N, N- bis-
Butyl ammonia ethyl ester etc. (methyl) propenoic acid dialkyl urethane；N- ethyl-N-methyl aminopropyl (methyl) acrylamides, N- methyl-
N- propyl group aminopropyl (methyl) acrylamides, N- methyl-N-isopropyl aminopropyl (methyl) acrylamides, N, N- dimethylaminos third
Base (methyl) acrylamide, N, N- diethylaminopropyls (methyl) acrylamide, N, N- dipropyl aminopropyl (methyl) acryloyls
The dialkyl group such as amine, N, N- dimethylaminoethyls (methyl) acrylamide, N, N- diethyl aminoethyls (methyl) acrylamide replace
It is more than at least one in aminoalkyl (methyl) acrylamide etc..
In order to be different from the combined polymerization monomer of hydroxyl described later, it is preferably as aforementioned nitrogenous vinyl monomer
The monomer of hydroxyl is not contained, the monomer of hydroxyl and carboxyl is not more preferably contained.It is as such monomer, preferably foregoing illustrative
Monomer, for example, the acrylic monomer containing N, N- dialkyl group substituted-amino or N, N- dialkyl group substituted amido；N- vinyls
The N- vinyl substituted lactams of ketopyrrolidine, N- caprolactams etc.；N- (the first of N- (methyl) acryloyl morpholine etc.
Base) acryloyl group substituted cyclic amine.
In addition, in the light diffusion bonding oxidant layer of the present invention, the nitrogenous vinyl monomer contained by adhesive composition, energy
The necessary cohesive force of light diffusion bonding oxidant layer and durability are given enough.In the light diffusion bonding oxidant layer of the present invention, relative to 100
(methyl) alkyl acrylate monomer of weight portion as main component, the nitrogenous vinyl contained in preferred binder compositionss
The content of monomer be 0.1～50 weight portion, more preferably 4～50 weight portions.
In addition, in the light diffusion bonding oxidant layer of the present invention, as the nitrogenous vinyl monomer that adhesive composition contains,
NVP, N, N- dimethyl (methyl) acrylamide, N, N- diethyl (methyl) acryloyl are used particularly preferably
Amine, N, N- dipropyl (methyl) acrylamide, N, N- diisopropyls (methyl) acrylamide, N, N- dibutyl (methyl) acryloyl
Amine, N, N- dimethyl aminopropyls (methyl) acrylamide, N, N- diethylaminopropyls (methyl) acrylamide, N, N- dimethylaminos
Ethyl (methyl) acrylamide, N- caprolactams etc..
As the copolymerizable vinyl monomer containing carboxyl (carboxylic combined polymerization monomer), can enumerate：(methyl) third
Olefin(e) acid, (methyl) carboxy ethyl acrylate, methacrylic acid carboxylic pentyl ester, 2- (methyl) acryloyl-oxyethyl hexahydro O-phthalic
Acid, 2- (methyl) acryloxypropyl hexahydrophthalic acid, 2- (methyl) acryloyl-oxyethyl phthalic acid, 2-
(methyl) acryloyl-oxyethyl succinic acid, 2- (methyl) acryloyl-oxyethyl maleic acid, carboxy-polycaprolactone list (methyl)
It is more than at least one in acrylate, 2- (methyl) acryloyl-oxyethyl tetrahydrophthalic acid etc..
In addition, in the light diffusion bonding oxidant layer of the present invention, the carboxylic combined polymerization contained by adhesive composition
Monomer can give light diffusion bonding oxidant layer necessary cohesiveness.In the light diffusion bonding oxidant layer of the present invention, binding agent combination
Thing can also not contain carboxylic combined polymerization monomer, but when containing sometimes, relative to 100 weight portions as main component
(methyl) alkyl acrylate monomer, the preferably content of carboxylic combined polymerization monomer are 0.1～5 weight portion.
As the combined polymerization sex ethylene base monomer (the combined polymerization monomer of hydroxyl) of hydroxyl, for example, can enumerate (first
Base) acrylic acid 8- hydroxyl monooctyl esters, the own ester of (methyl) acrylic acid 6- hydroxyls, (methyl) acrylic acid 4- hydroxybutyls, (methyl) propylene
Sour hydroxy methacrylate etc. (methyl) hydroxyalkyl acrylates class, N- hydroxyls (methyl) acrylamide, N- methylols (methyl) propylene
It is more than at least one in (methyl) acrylic amides of hydroxyl such as amide, N- ethoxys (methyl) acrylamide etc..
In addition, in the light diffusion bonding oxidant layer of the present invention, the combined polymerization list of the hydroxyl contained by adhesive composition
Body, can be and described containing carboxyl as using for reducing the combined polymerization monomer of carboxylic combined polymerization content of monomer
Monomer make obtained by light diffusion bonding oxidant layer the corrosion-prone adherend such as the ITO surfaces of transparent and electrically conductive film is produced it is rotten
Corrosion affects.Therefore, the combined polymerization monomer of hydroxyl can aid in the cohesive force of raising light diffusion bonding oxidant layer and subtract
Few corrosivity.The present invention light diffusion bonding oxidant layer in, relative to 100 weight portions as main component (methyl) acrylic acid
Alkyl ester monomer, the content of the combined polymerization monomer of the hydroxyl contained in preferred binder compositionss is 0.1～50 weight portion.
The acrylic polymer of the adhesive composition used in the light diffusion bonding oxidant layer of the present invention, preferably by alkane
The carbon number of base for (methyl) alkyl acrylate monomer of C1～C14 in it is at least one more than, and as containing can be total to
The monomer of poly- functional group is selected from the combined polymerization monomer of hydroxyl, carboxylic combined polymerization monomer, nitrogenous vinyl monomer
With the copolymerization that at least one weight average molecular weight above to be formed in the group constituted containing aromatic monomer is 20～2,500,000
Thing.
To the polymerization of copolymer, there is no particular limitation, it is possible to use solution polymerization process, emulsion polymerization etc. are suitable
Known polymerization.The weight average molecular weight of copolymer is preferably 200,000～2,500,000.
Above-mentioned copolymer is preferably acrylic polymer, preferably comprises (methyl) acrylate monomer or (methyl) propylene
50～100 weight % of acrylic monomer of acid, (methyl) acrylic amide etc..
In foregoing adhesives compositionss, it is used as light diffusion by coordinating in above-mentioned copolymer (acrylic polymer)
The silicon class particle of agent, the optical characteristics (transmitance, haze value) needed for can giving.Further, by coordinating cross-linking agent, suitable
Arbitrarily additive, can adjust the characteristics such as required physical property.
As silicon class particle, can be selected from the single particle or compound particle of silicon-containing compound, specifically, Ke Yiju
Go out silicon dioxide granule, silicon dioxide tripolycyanamide core-shell particles, silicone particle, silicate glass particle etc..It is preferably selected from
In one or more of group being made up of silicon dioxide granule, silicon dioxide tripolycyanamide core-shell particles, silicone particle.Dioxy
SiClx tripolycyanamide core-shell particles, are the compound particles of the shell of the core with tripolycyanamide and silicon dioxide.The compound particle has
There is the structure on the surface that the fine particle (nanoparticle) of silica sol is closely filled in tripolycyanamide particle.
As silicone particle, silicone resin particle, silicone rubber particle, crosslinking silicone particle etc. can be enumerated.
In the adhesive composition that the light diffusion bonding oxidant layer of the present invention is used, relative to the acrylic compounds of 100 weight portions
Polymer, preferably comprises the silicon class particle of 0.1～20 weight portion.
As cross-linking agent, can enumerate：Hexamethylene diisocyanate, isophorone diisocyanate, diphenyl methane two
The biuret modified body or different of the diisocyanates of isocyanates, toluene di-isocyanate(TDI), xylylene diisocyanate etc.
The polyisocyanate of the addition product of polyhydric alcohol more than isocyanurate modified body, with the trivalent such as trimethylolpropane or glycerol etc.
It is more than at least one in compound, metal class chelate, epoxide etc..Alternatively, it is also possible to pass through the friendship of the light such as ultraviolet
Join to be crosslinked binding agent.
In the case of crosslinking copolymers are made using cross-linking agent, preferred copolymer is had and can be crosslinked with cross-linking agent
Functional group's (hydroxyl or carboxyl etc. can be selected according to the species of cross-linking agent) of reaction, and preferably comprise in side chain with these
The monomer of functional group.In addition, relative to the copolymer of 100 weight portions, preferred binder compositionss contain 0.01～5 weight portion
As the isocyanate compound of cross-linking agent.
As antistatic additive, as long as fusing point is 25～50 DEG C of ionic compound just have no particular limits, for example,
There is preferably in cation or anion pyridiniujm, the imidazoles of the alkyl that carbon number is C6～C14 as substituent group
Salt, pyrimidine salt, pyrazoles salt, pyrroles's salt and ammonium salt, phosphonium salts, sulfonium salt isoiony compound.Due to these antistatic
The fusing point of agent is low and the reason with chain alkyl, thus it is speculated that they are high with the affinity of acrylic copolymer.
As the ionic compound that fusing point is 25～50 DEG C, it is the ionic compound with cation and anion,
Can enumerate：Cation is pyridylium, glyoxaline cation, pyrimidine cation, pyrazoles cation, Bi Kayang
Cationic nitrogenous ， Huo person's phosphonium cations of ion, ammonium cation etc., sulfonium cation etc., anion is hexafluoro-phosphate radical
(PF6 -), thiocyanate radical (SCN-), benzene sulfonamide acid group (RC6H4SO3 -), perchlorate (ClO4 -), tetrafluoroborate (BF4 -) etc.
Inorganic or organic anion compound.It is preferred that be solid under room temperature (such as 25 DEG C), and by select alkyl chain length,
The position of substituent group, number etc., can obtain the compound that fusing point is 25～50 DEG C.Preferred cationic is quaternary nitrogen cation,
Can enumerate：The season of 1- alkyl pyridines (carbon atom of 2～6 can both have substituent group can not also have substituent group) etc.
(carbon atom of 2,4,5 can both have substituent group can not also have replacement for pyridylium, 1,3- dialkylimidazoliums
Base) etc. season glyoxaline cation, the quaternary ammonium cation of tetra-allkylammonium etc. etc..
Relative to the copolymer of 100 weight portions, preferably fusing point be 25～50 DEG C of ionic compound content be 0.1～
5.0 weight portion.
As the specific example of the ionic compound that fusing point is 25～50 DEG C, 1- octylpyridinium hexafluoro phosphorus can be enumerated
Hydrochlorate, 1- nonylpyridine hexafluorophosphates, 2- methyl isophthalic acids-dococylpyridinium hexafluorophosphate, 1- octylpyridiniums ten
Dialkyl benzene sulfonate, 1- dococylpyridinium rhodanates, 1- dococylpyridinium dodecyl benzene sulfonates, 4- first
Base -1- octylpyridinium hexafluorophosphates etc..
In the adhesive composition that the light diffusion bonding oxidant layer of the present invention is used, as antistatic additive can only containing fusing point be
25～50 DEG C of ionic compound, it is also possible to and use other antistatic additive.As with ionicization that fusing point is 25～50 DEG C
Other antistatic additive of compound, are not particularly limited, but are preferably the ionic compound containing acryloyl group.Make
It is the ionic compound containing acryloyl group, is the ionic compound with cation and anion, can enumerate：Cation
For (methyl) acryloxyalkyl trialkyl ammonium (R3N+-CnH2n- OCOCQ=CH2, wherein, Q=H or CH3, R=alkyl) etc.
The cation containing (methyl) acryloyl group；Anion is hexafluoro-phosphate radical (PF6 -), thiocyanate radical (SCN-), organic sulfonic acid
Root (RSO3 -), perchlorate (ClO4 -), tetrafluoroborate (BF4 -), the acid imide root (R containing FF 2N-) etc. it is inorganic or organic
The compound of anion.As the acid imide root (R containing FF 2N-) RF, trifyl, five fluorine ethylsulfonyls can be enumerated
Deng perfluoroalkyl group sulfonyl, fluorosulfonyl.As the acid imide root containing F, double (fluorosulfonyl) acid imide roots can be enumerated
〔(FSO2)2N-), double (trifyl) acid imide root ((CF3SO2)2N-), double (five fluorine ethylsulfonyls) acid imide roots
〔(C2F5SO2)2N-) etc. double sulfonyl acid imide roots.
When with containing acryloyl group ionic compound and the used time, preferably with relative to copolymer as 0.1～5.0 weight %
The ratio of left and right carries out copolymerization or addition.
As the specific example of the ionic compound containing acryloyl group, dimethylaminomethyl (methyl) third can be enumerated
Olefin(e) acid ester hexafluorophosphoric acid methyl salt ((CH3)3N+CH2OCOCQ=CH2·PF6 -, wherein, Q=H or CH3), dimethyl aminoethyl
Double (trifyl) acid imide the methyl salt ((CH of (methyl) acrylate3)3N+(CH2)2OCOCQ=CH2·(CF3SO2)2N-, wherein, Q=H or CH3), double (fluorosulfonyl) acid imide the methyl salt ((CH of dimethylamine methyl ester3)3N+
CH2OCOCQ=CH2·(FSO2)2N-, wherein, Q=H or CH3) etc..
As other any conditions, silane coupler, antioxidant, surfactant, solidification can be suitably coordinated to promote
Enter agent, plasticizer, filler, crosslinking catalyst, cross-linked inhibitor, curing inhibitors, processing aid, age resister etc. known
Additive.These both may be used singly or in combination of two or more use.
The present invention light diffusion bonding oxidant layer can after being coated with above-mentioned adhesive composition on base material or mold release film,
Make adhesive composition crosslinking and obtain.
The adhesive layer of the interlayer laminating for opticses etc., it is desirable to be thin adhesive layer, preferably aforementioned light diffusion
The thickness of adhesive layer is 1 μm～20 μm.In addition, generally the thickness of the cohesive force of adhesive layer and adhesive layer substantially into than
Example, is more than 2.0N/25mm to the cohesive force of glass plate when in the present invention, the thickness of preferably light diffusion bonding oxidant layer is 20 μm.Separately
Outward, when the thickness of adhesive layer is not in the case of 20 μm, the cohesive force of when " thickness 20 μm " is (N/25mm) by adhesive layer
Thickness be set as T (μm), the cohesive force of adhesive layer be set as F (N/25mm), and by formula " (during 20 μm of thickness
Cohesive force)=20F/T " calculating.
When the light diffusion bonding oxidant layer of the present invention being used in interlayer laminating of opticses etc., preferred light diffusion bonding
It is that more than 40%, refractive index is more than 1.47 that the transmitance of oxidant layer is more than 90%, haze value.It is preferred that haze value is more than 40%
And less than 90%.In order to reduce the light line reflection between light diffusion bonding oxidant layer and opticses on interface, it is desirable to refractivity
It is as little as possible.Therefore, the refractive index of above-mentioned smooth diffusion bonding oxidant layer is preferably 1.47～1.50.
The surface resistivity of the light diffusion bonding oxidant layer of the present invention is preferably 1.0 × 1012Ω/below.If sheet resistance
Rate is big, then the poor performance discharged by the electrostatic produced because powered when to peeling off, therefore, by making surface resistivity enough
It is little, can reduce, with the stripping electrostatic pressure produced by the electrostatic occurred when peeling off adhesive layer from adherend, can suppressing
The impact of the electric control circuit to adherend etc..
The light diffusion bonding film of the present invention can form the light diffusion bonding of the present invention by the one side in base material or mold release film
Oxidant layer is manufacturing.
As the mold release film (barrier film) for being used to form the base material film of light diffusion bonding oxidant layer or protection adhesive surface, it is possible to use
Resin films such as polyester film etc..
For base material film, can implement logical on the face contrary with light diffusion bonding oxidant layer side is formed with of resin film
The antifouling process that silicone, the releasing agent of fluorine class or coating agent, silicon dioxide microparticle etc. are carried out is crossed, can be implemented by antistatic additive
Coating or the antistatic treatment for carrying out such as be mixed into.
For mold release film, on the face that the adhesive surface with light diffusion bonding oxidant layer carries out fitting side, implement by silicon
The demoulding that ketone, releasing agent of fluorine class etc. are carried out is processed.
By the face for implementing demoulding process of mold release film of being fitted on the two sides of a light diffusion bonding oxidant layer respectively, can
Form the composition of " mold release film/light diffusion bonding oxidant layer/mold release film ".In the case, by by the mold release film of both sides successively or
Simultaneously peel off and expose adhesive surface, can be with the optical member adhering such as blooming.As blooming, light polarizing film, phase can be enumerated
Potential difference film, antireflection film, anti-dazzle (anti-glare) film, ultraviolet-absorbing film, infrared absorbing film, optical compensation films, blast
Film etc..For example, it is preferable to light diffusion bonding oxidant layer be used with the interlayer of brightness enhancement film in Polarizer.
The light diffusion bonding film of the present invention can be used for the various light of peripheral components of the liquid crystal display based on Polarizer
Learn in the laminating of film, touch panel various bloomings, Electronic Paper various bloomings, organic EL with various bloomings etc..
In addition, light diffusion bonding oxidant layer can be stated at least one face upper strata prestack of these bloomings and be prepared with bonding
The blooming of oxidant layer.Specifically, " blooming/light diffusion bonding oxidant layer/blooming ", " blooming/light diffusion bonding can be enumerated
Oxidant layer/mold release film ", " blooming/light diffusion bonding oxidant layer ", " blooming/light diffusion bonding oxidant layer/blooming/light diffusion bonding
Oxidant layer/blooming ", " blooming/light diffusion bonding oxidant layer/blooming/light diffusion bonding oxidant layer/mold release film ", " mold release film/light
The composition of diffusion bonding oxidant layer/blooming/light diffusion bonding oxidant layer/mold release film " etc..When bonding is arranged on two-sided in blooming
During oxidant layer, it is also possible to its one side is arranged to light diffusion bonding oxidant layer only.
For example, with the light diffusion protected with mold release film as " blooming/light diffusion bonding oxidant layer/mold release film "
In the case of adhesive layer, peel mold release film off and expose the light diffusion bonding agent as " blooming/light diffusion bonding oxidant layer "
Layer, and fitted with other bloomings, thus, it is possible to obtain light diffusion bonding oxidant layer for interlayer laminating such as " optics
The composition of film/light diffusion bonding oxidant layer/blooming ".
Embodiment
Below, the present invention is illustrated based on embodiment.
<The manufacture of acrylic copolymer>
[embodiment 1]
Nitrogen is imported to being furnished with the reaction unit of agitator, thermometer, reflux condenser and nitrogen ingress pipe, so as to nitrogen
Gas has replaced the air in reaction unit.Then, butyl acrylate, 1.0 weight of 90 weight portions are added in reaction unit
The acrylic acid 4- hydroxybutyls of part, the acrylamide of 9 weight portions, and while add solvent (the acetic acid second of 60 weight portions
Ester).Then, the azodiisobutyronitrile as polymerization initiator of 0.1 weight portion was instilled through 2 hours, at 65 DEG C makes which anti-
Answer 6 hours, obtain weight average molecular weight be 700,000, for the acrylic acid copolymer soln 1 of embodiment 1.Take acrylic acid copolymer
A part for thing, uses as acid value measuring sample described later.
[embodiment 2～5 and comparative example 1～3]
In addition to it have adjusted the composition of each monomer described in (A), (B), (C), (D) such as table 1 respectively, with above-mentioned use
Similarly operated in the acrylic acid copolymer soln 1 of embodiment 1, obtained for embodiment 2～5 and comparative example 1～3
Acrylic acid copolymer soln.
<The preparation of adhesive composition, light diffusion bonding oxidant layer and light diffusion bonding film>
[embodiment 1]
In the acrylic acid copolymer soln 1 of embodiment 1 fabricated as described above, the Coronate of 0.1 weight portion is added
L-45 (addition product of toluene di-isocyanate(TDI) (TDI) compound) and 3.0 parts by weight of silica tripolycyanamide core-shell particles (grains
2 μm of footpath) and 1.5 weight portion 1- octylpyridiniums hexafluorophosphates mixing is stirred, obtain the binding agent group of embodiment 1
Compound.By the adhesive composition, it is coated on and is made up of polyethylene terephthalate (PET) film for having been coated with silicone resin
After in mold release film, it is dried at a temperature of 90 DEG C and removes solvent, then, ripening 7 days in the environment of 23 DEG C, 50%RH,
There is on the one side of mold release film light diffusion bonding oxidant layer (20 μ of thickness for being crosslinked adhesive composition so as to obtain
The light diffusion bonding film of embodiment 1 m).
[embodiment 2～5 and comparative example 1～3]
Except (E), (F), (G) of such as table 1 it is described have adjusted the composition of additive respectively in addition to, with above-described embodiment 1
Light diffusion bonding film similarly operated, obtained the light diffusion bonding film of embodiment 2～5 and comparative example 1～3.
Table 1
In table 1, the numerical value in bracket represents the weight portion match ratio of each composition.Weight portion be by monomer total amount, will
(A) total amount that～(D) is organized sets for about 100 weight portions to obtain.Wherein, the monomer total amount of embodiment 2 be 105 weight portions,
It is 110.5 weight portions, the monomer total amount of comparative example 3 that the monomer total amount of embodiment 3 is 92 weight portions, the monomer total amount of comparative example 2
For 110 weight portions.
In addition, compound name corresponding with the abbreviation of each composition used in table 1 is shown in Table 2.Here,
Trade names of Coronate (the U ロ ネ ー ト, registered trade mark) L-45 for Nippon Polyurethane Industry Co., Ltd., D-11ON is three
The trade name of well KCC.TDI fingernail phenylene diisocyanates, XDI refer to xylylene diisocyanate.
Table 2
<Test method and evaluation>
Mold release film (scribbling the PET film of silicone resin) is peeled off from the light diffusion bonding film of embodiment 1～5 and comparative example 1～3
And expose light diffusion bonding oxidant layer, and light diffusion bonding oxidant layer is transferred on the one side of Polarizer (film).
The assay method ＞ of ＜ cohesive forces
Light diffusion bonding oxidant layer is transferred to the one side of the Polarizer (film) of 180 μm of thickness, so as to obtain as sample
Light diffusion bonding film (with adhesive layer blooming).
Light diffusion bonding film is fitted in hold-down roller on the non-stannum face of the soda-lime glass cleaned with acetone, 50 DEG C,
Pressure cooker process is carried out under conditions of 0.5MPa × 20 minute.Then, recover to the environment of 23 DEG C × 50%RH, use tension test
Machine according to JIS Z0237《Adhesive tape, bonding sheet test method》, determine the stripping of the light diffusion bonding film after 1 hour
Intensity, by using the speed of 300mm/min to 180 ° of directions peel off when peel strength it is viscous as the light diffusion of light diffusion bonding film
The cohesive force of knot oxidant layer.
<The assay method of refractive index>
With Abbe refractometer (manufacturer：ERMA, model：The refraction of the light diffusion bonding oxidant layer at ER-2S) determining 23 DEG C
Rate.
<The assay method of transmitance>
The assay method of transmitance：According to JIS K7105,《The optical characteristics test method of plastics》Determine light diffusion bonding
The transmitance of oxidant layer.
<The assay method of surface resistivity>
Peel mold release film (scribbling the PET film of silicone resin) off and expose light diffusion bonding oxidant layer, using resistivity meter
HirestaUP-HT450 (Ha イ レ ス タ UP-HT450, Co., Ltd. Rhizoma Sparganii chemical analysis technology (Mitsubishi
Chemical Analytech Co., Ltd.s) manufacture), determine the surface resistivity of light diffusion bonding oxidant layer.
The assay method ＞ of ＜ haze values
The assay method of haze value：According to JIS K7136,《The mist degree computational methods of plastics-transparent material》Determine light to expand
The haze value of scattered adhesive layer.
<The test method of durability>
By the adhesive film of the 10cm square for adopting the method same with the measure of cohesive force to prepare, soda-lime glass is fitted in
Sample is prepared on non-stannum face, after the sample is placed on 250 hours in the environment of 60 DEG C × 90%RH, be taken out to 23 DEG C ×
The environment of 50%RH, with the state of the light diffusion bonding film after visual observation 1 hour, so as to judge durability.
○：The stripping and foaming of light diffusion bonding film are not produced completely
△：A part for light diffusion bonding film generates stripping and foams.
×：The entirety of light diffusion bonding film generates stripping and foams.
The measurement result of embodiment 1～5 and comparative example 1～3 is shown in Table 3.In addition, in surface resistivity, passing through
" mE+n " is representing " m × 10+n" (wherein, m is arbitrary real number, and n is positive integer).
Table 3
For the light diffusion bonding film of embodiment 1～5, when the thickness of light diffusion bonding oxidant layer is 20 μm to glass plate
Cohesive force be more than 2.0N/25mm.In addition, the refractive index of light diffusion bonding oxidant layer be more than 1.47, transmitance be 90% with
Upper, surface resistivity is 1.0 × 1012Ω/below, and haze value be more than 40%, durability it is also excellent.That is, embodiment 1～
5 light diffusion bonding film disclosure satisfy that necessary requirement and overcome the problem of presence in the past.
As reference, using with 1～5 identical light diffusion bonding agent compositionss of embodiment and prepare in the same way,
Light diffusion bonding oxidant layer thickness is respectively 10 μm, 13 μm, 15 μm, 20 μm of light diffusion bonding film, determines light diffusion respectively viscous
The transmitance and haze value of knot oxidant layer, and the results are shown in table 4.Light to having used light diffusion bonding agent compositionss spreads
For the transmitance of adhesive layer, although do not rely on the thickness of adhesive layer, but understand thickness of the haze value in adhesive layer
Reduce in the case of thinning.
Table 4
| The thickness (μm) of adhesive layer | 20 | 15 | 13 | 10 |
| Haze value (%) | 85.77 | 80.75 | 78.26 | 72.99 |
| Transmitance (%) | 93.19 | 93.63 | 93.77 | 93.89 |
The adhesive film of comparative example 1, due to the reason that the monomer composition of acrylic polymer is single 2EHA, refractive index
It is low；Due to the reason of not siliceous class particle, haze value is low.Further, since ionic compound is not contained, therefore surface resistivity
It is high.And, durability is also poor.
The adhesive film of comparative example 2, it may be possible to due to silicon class particle content more than reason, cohesive force is low, transmitance is low.Separately
Outward, as the content of ionic compound is few, therefore surface resistivity is high.And, durability is also poor.
, due to the poor reason of silicon class particle, refractive index is low, haze value is low for the adhesive film of comparative example 3.Further, since
The content of ionic compound is few, therefore surface resistivity is high.The reason that adhesive composition is not crosslinked is additionally, since,
Cohesive and durability are also poor.
So, the adhesive film of comparative example 1～3 cannot meet conventional proposed requirement and overcome asking for presence in the past
Topic.
Claims (8)
1. a kind of smooth diffusion bonding oxidant layer, which is the light diffusion bonding oxidant layer with light diffusion function,
The smooth diffusion bonding oxidant layer by containing the copolymer, cross-linking agent, silicon class particle that weight average molecular weight is 200,000～2,500,000 with
And the adhesive composition of the ionic compound that fusing point is 25～50 DEG C is formed,
The copolymer is formed by following monomer copolymerization：(methyl) alkyl acrylate of the carbon number of alkyl for C1～C14
It is more than at least one in monomer；And as the monomer containing copolymerizable functional group selected from the combined polymerization list by hydroxyl
At least one in body, carboxylic combined polymerization monomer, nitrogenous vinyl monomer and the group constituted containing aromatic monomer
More than,
The transmitance when thickness of the smooth diffusion bonding oxidant layer is 20 μm is more than 90%, and haze value is more than 40% and 90%
Hereinafter,
The refractive index of the smooth diffusion bonding oxidant layer is more than 1.47, and surface resistivity is 1.0 × 1012Ω/below,
Relative to the copolymer of 100 weight portions, the silicon class particle is contained with the ratio of 0.1～20 weight portion.
2. light diffusion bonding oxidant layer as claimed in claim 1, wherein, when the thickness of the smooth diffusion bonding oxidant layer is 20 μm
When, it is more than 2.0N/25mm relative to the cohesive force of glass plate.
3. light diffusion bonding oxidant layer as claimed in claim 1 or 2, wherein, in the adhesive composition, relative to 100 weights
Amount part the copolymer, containing 0.01～5 weight portion as the cross-linking agent isocyanate compound, 0.1～5 weight portion
The ionic compound.
4. light diffusion bonding oxidant layer as claimed in claim 1 or 2, wherein, the silicon class particle is selected from by silicon dioxide
One or more of group that particle, silicon dioxide tripolycyanamide core-shell particles, silicone particle are constituted.
5. a kind of smooth diffusion bonding film, which is viscous in light diffusion that the one side of mold release film is formed any one of Claims 1 to 4
Knot oxidant layer is formed, and the composition with mold release film/light diffusion bonding oxidant layer/mold release film.
6. a kind of smooth diffusion bonding film, the light diffusion which is laminated any one of Claims 1 to 4 on the one side of base material are viscous
Knot oxidant layer is formed.
7. a kind of adhesive film, its interlayer between Polarizer and brightness enhancement film have been used any one of Claims 1 to 4
Light diffusion bonding oxidant layer.
8. a kind of blooming with adhesive layer, which is appointed during Claims 1 to 4 is laminated with least one face of blooming
Light diffusion bonding oxidant layer described in one.
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| JP2013255443A JP6343837B2 (en) | 2013-12-10 | 2013-12-10 | Light diffusion adhesive layer and light diffusion adhesive film |
| JP2013-255443 | 2013-12-10 |
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| KR (5) | KR20150067717A (en) |
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| JP6644971B2 (en) * | 2014-08-06 | 2020-02-12 | 藤森工業株式会社 | Adhesive layer and adhesive film |
| JP6620325B2 (en) * | 2014-08-06 | 2019-12-18 | 藤森工業株式会社 | Adhesive layer and adhesive film |
| WO2017010502A1 (en) * | 2015-07-13 | 2017-01-19 | 王子ホールディングス株式会社 | Adhesive sheet, laminate, and method for producing same |
| CN107987214B (en) * | 2016-10-26 | 2020-11-27 | 宁波激智科技股份有限公司 | Diffusion particles suitable for aqueous adhesive system and preparation method thereof |
| CN108070050A (en) * | 2016-11-11 | 2018-05-25 | 宁波激智科技股份有限公司 | A kind of diffusion particle and preparation method thereof |
| KR102223918B1 (en) * | 2017-04-21 | 2021-03-05 | 삼성에스디아이 주식회사 | Adhesive film for polarizing plate, polarizing plate comprising the same and optical display apparatus comprising the same |
| JP6783275B2 (en) * | 2018-09-05 | 2020-11-11 | 藤森工業株式会社 | Light-diffusing adhesive layer and light-diffusing adhesive film |
| JP6783276B2 (en) * | 2018-09-05 | 2020-11-11 | 藤森工業株式会社 | Light-diffusing adhesive layer and light-diffusing adhesive film |
| TWI779211B (en) * | 2019-02-12 | 2022-10-01 | 日商日東電工股份有限公司 | Reinforcing film, manufacturing method and reinforcing method of device |
| CN114945850B (en) * | 2020-01-09 | 2024-03-19 | Lg伊诺特有限公司 | Light path control member and display device including the same |
| JP7058693B2 (en) * | 2020-08-14 | 2022-04-22 | 藤森工業株式会社 | Light-diffusing adhesive layer and light-diffusing adhesive film |
| KR20230162036A (en) * | 2021-03-31 | 2023-11-28 | 가부시키가이샤 도모에가와 세이시쇼 | Display device having an anisotropic light diffusion adhesive layer and an anisotropic light diffusion adhesive layer |
| TW202348764A (en) * | 2022-03-31 | 2023-12-16 | 日商巴川製紙所股份有限公司 | Anisotropic light diffusion adhesive layer and display device comprising the same |
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| US20100068421A1 (en) * | 2008-09-17 | 2010-03-18 | 3M Innovative Properties Company | Light diffusive pressure sensitive adhesive |
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| KR20200090677A (en) | 2020-07-29 |
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| TW201522565A (en) | 2015-06-16 |
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| KR20160135116A (en) | 2016-11-24 |
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| TW201706379A (en) | 2017-02-16 |
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| KR102136989B1 (en) | 2020-07-23 |
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