CN110268310A - Liquid crystal display panel and liquid crystal display device - Google Patents
Liquid crystal display panel and liquid crystal display device Download PDFInfo
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- CN110268310A CN110268310A CN201880011247.XA CN201880011247A CN110268310A CN 110268310 A CN110268310 A CN 110268310A CN 201880011247 A CN201880011247 A CN 201880011247A CN 110268310 A CN110268310 A CN 110268310A
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- liquid crystal
- crystal display
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/04—Materials and properties dye
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Optical Filters (AREA)
Abstract
The present invention provides a kind of liquid crystal display panel, its liquid crystal cells for including IPS mode (C), the 1st optical functional layer (A1) configured in order from the visible side of above-mentioned liquid crystal cells (C) and the 1st polarizing coating (P1) and the 2nd optical functional layer (A2) configured in order from the back side of above-mentioned liquid crystal cells (C) and the 2nd polarizing coating (P2), at least any one optical functional layer in above-mentioned 1st optical functional layer (A1) and the 2nd optical functional layer (A2) contain the range that pigment and mist degree are 0.2~2%.Wide colour gamut and antiradar reflectivity not only may be implemented in liquid crystal display panel of the invention, but also can satisfy high contrast simultaneously.
Description
Technical field
The present invention relates to liquid crystal display panels.The liquid crystal display panel can form liquid crystal display device.Above-mentioned liquid crystal display panel, liquid crystal display
Device is applicable to various uses, for example, the inputs such as touch panel that can be applicable with the visible side in liquid crystal display device fill
It sets and is used together.As above-mentioned touch panel, optical mode, ultrasonic wave mode, electrostatic capacitance method, resistance can be suitably used for
The touch panel of film mode etc..Touch panel particularly suitable for electrostatic capacitance method.Above-mentioned touch panel does not limit especially
It is fixed, it can be used for such as mobile phone, tablet computer, portable information terminal.
Background technique
For liquid crystal display device, from the point of view of its image forming mode, in the two sides of liquid crystal cells configuration polarization member
Part be it is essential, be usually pasted with polarizing coating.When the polarizing coating is pasted on liquid crystal cells, usually using adhesive.
In addition, for polarizing coating is bonding with liquid crystal cells, usual each materials'use adhesive comes in order to reduce the loss of light
It carries out closely sealed.In this case, due to having many advantages, such as to lead to without carrying out the drying process for making polarizing coating cementation
It is often used obtained from the single side that adhesive is arranged in the form of adhesive phase to polarizing coating in advance with the inclined of adhesive phase
Vibrating diaphragm.
In recent years, brightness, vividness (i.e. wide colour gamut), organic EL display device (OLED) are required to image display device
It is concerned, wide colour gamut has also been required for liquid crystal display device.For example, as the side for making the wide colour gamut of liquid crystal display device
Method proposes the adhesive that the pigment of very big wavelength is absorbed by showing containing the range in specific wavelength (560~610nm)
Polarizing film is laminated on liquid crystal display panel made of the one or both sides of above-mentioned liquid crystal cells (patent document 1,2) by layer.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2011-039093 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2014-092611 bulletin
Summary of the invention
Problem to be solved by the invention
The above-mentioned usual reflectivity of liquid crystal display panel is high, it is therefore desirable to reduce reflectivity.The inventors of the present invention are to patent document 1,2
The liquid crystal display panel of middle record is studied, as a result, it has been found that, which also can get reflection although not only expanding colour gamut
The advantages of rate reduces, but contrast reduces.
The purpose of the present invention is to provide a kind of with liquid crystal cells and polarizing coating and the optics function that has used containing pigment
The liquid crystal display panel of ergosphere, which can not only realize wide colour gamut and antiradar reflectivity, while can also meet high contrast.
In addition, the purpose of the present invention is to provide a kind of liquid crystal display devices for having used above-mentioned liquid crystal display panel.
Solution to the problem
The inventors of the present invention have made intensive studies to solve the above-mentioned problems, as a result, it has been found that having following AD HOCs
Liquid crystal cells and polarizing coating liquid crystal display panel, the polarizing coating has the optical functional layer containing pigment of given mist degree, from
And complete the present invention.
That is, being included the present invention relates to a kind of liquid crystal display panel
The liquid crystal cells of IPS mode,
The 1st optical functional layer configured in order from the visible side of above-mentioned liquid crystal cells and the 1st polarizing coating and
The 2nd optical functional layer configured in order from the back side of above-mentioned liquid crystal cells and the 2nd polarizing coating,
At least any one optical functional layer in above-mentioned 1st optical functional layer and the 2nd optical functional layer contains pigment and mist
The range that degree is 0.2~2%.
In above-mentioned liquid crystal display panel, preferably at least the 1st optical functional layer contains the model that pigment and mist degree are 0.3~2%
It encloses.
In above-mentioned liquid crystal display panel, the mist degree of the preferably above-mentioned optical functional layer containing pigment is 0.2%~1.5%.
In above-mentioned liquid crystal display panel, above-mentioned pigment can be used 470~510nm of wave-length coverage and wave-length coverage 570~
At least any wave-length coverage in 610nm has the pigment of maximum absorption wavelength.
In above-mentioned liquid crystal display panel, tetraazatetradecane porphyrin class pigment is can be used in above-mentioned pigment.
100 weight of base polymer in above-mentioned liquid crystal display panel, relative to the resin layer for forming above-mentioned optical functional layer
Part, preferably comprise above-mentioned 0.01~5 parts by weight of pigment.
Moreover, it relates to a kind of liquid crystal display device, it uses above-mentioned liquid crystal display panels.
The effect of invention
In liquid crystal display panel of the invention, the optical function containing pigment is used when liquid crystal cells and polarizing coating are bonded
Layer.Above-mentioned optical functional layer passes through the light using a part of wavelength of pigment absorption, the color of adjustable liquid crystal display device entirety
It adjusts, vividness can be improved by wide colour gamutization.Especially in 570~610nm of 470~510nm of wave-length coverage and wave-length coverage
In at least any wave-length coverage have maximum absorption wavelength pigment can absorb RGB other than wave-length coverage (wave-length coverage 470
570~610nm of~510nm and/or wave-length coverage) color performance institute it is unwanted shine, to inhibit above-mentioned unwanted
It shines, is effective to wide colour gamut.
Furthermore it is possible to think, in liquid crystal display panel of the invention, in the optical function that at least side of liquid crystal cells uses
There is layer pigment therefore not only can usually make the wide colour gamut of liquid crystal display panel, additionally it is possible to reduce reflectivity, but in pigment and optics
In the case where the poor compatibility of the forming material of functional layer, optical functional layer occurs mist degree and increases.And it is known that by optical function
The mist degree bring light diffusion couple liquid crystal display panel of layer impacts, and the contrast of liquid crystal display panel can be made to reduce, further make to reflect
Rate rises.On the other hand, for liquid crystal display panel, influence caused by mist degree to contrast according to the modes of liquid crystal cells without
Together.For example, as it is known that in the liquid crystal display panel of liquid crystal cells for having used VA mode, the shadow of the mist degree of optical functional layer to contrast
It rings big.In contrast, in the liquid crystal cells of IPS mode, influence ratio VA mode of the mist degree of optical functional layer to contrast is small.
The present invention is based on above-mentioned opinion, by pair even if in the case where generating mist degree to the IPS mode small influence of contrast
Liquid crystal cells be applicable in by optical functional layer containing pigment and by the control of the mist degree of generation for 0.2~2% range light
Functional layer is learned, to obtain not only to realize wide colour gamut and antiradar reflectivity while also be able to satisfy high contrast liquid crystal display panel
(IPS mode).
In addition, in liquid crystal display panel of the invention, due to having used with the liquid crystal display panel constituted as described above,
In the optical functional layer that pigment sufficiently dissolves, mist degree can be made very small, polarization characteristic will not be eliminated substantially, and can be right
The fluctuation of the substantially possessed light distribution of liquid crystal display panel controls polarization direction using small mist degree, so as to keep work
For liquid crystal display panel degree of polarization, transmissivity while meet antiradar reflectivity and high contrast.
Detailed description of the invention
Fig. 1 is the sectional view for showing an embodiment of liquid crystal display panel of the invention.
Symbol description
The liquid crystal cells of C IPS mode
The 1st optical functional layer of A1
The 2nd optical functional layer of A2
The 1st polarizing coating of P1
The 2nd polarizing coating of P2
Specific embodiment
Hereinafter, being illustrated referring to embodiment of the attached drawing to liquid crystal display panel of the invention.Fig. 1 is to show liquid of the invention
The sectional view of one embodiment of crystal panel.The liquid crystal display panel of Fig. 1 includes the liquid crystal cells C of IPS mode, from the liquid crystal list
The visible side of first C acts the 1st optical functional layer A1 that configures in order and the 1st polarizing coating P1 and from the back side of above-mentioned liquid crystal cells C
Act the 2nd optical functional layer A2 and the 2nd polarizing coating P2 configured in order in side.
Hereinafter, each component to liquid crystal display panel of the invention is illustrated.
<liquid crystal cells>
Liquid crystal cells C (glass substrate/liquid crystal layer/glass substrate structure) uses the liquid crystal cells of IPS mode.It needs
It is bright, in the case wheres TN mode, STN mode, the VA mode etc. other than liquid crystal cells are IPS pattern formula, optical functional layer
Mist degree influenced caused by these liquid crystal cells greatly, it is difficult to control contrast.
It includes that there is no the liquid crystal for the liquid crystal molecule being uniformly directed in the state of electric boundary that the liquid crystal layer of liquid crystal cells C, which uses,
Layer.It is preferable to use nematic crystals for liquid crystal molecule.Liquid crystal cells C, which has, accompanies above-mentioned liquid crystal layer between 2 transparent substrates
Structure.The form of the liquid crystal display panel of built-in touch sense function can be used in liquid crystal cells or outside liquid crystal cells.Furthermore it is possible to
Filter substrate is arranged in (transparent substrate of visible side) on liquid crystal cell.As the material for forming above-mentioned transparent substrate, can lift
Such as glass or polymer film out.
<optical functional layer>
As long as optical functional layer resin layer of the invention, is not particularly limited.As above-mentioned resin layer, can enumerate
Film layer, adhesive phase etc..Above-mentioned optical functional layer can be formed by the composition containing base polymer.Optics function containing pigment
Ergosphere can be formed by the composition containing base polymer and pigment.As above-mentioned 1st optical functional layer of the invention and the 2nd light
Functional layer is learned, film layer, adhesive phase etc. can be used, above-mentioned 1st optical functional layer and the 2nd optical functional layer can be identical type
Optical functional layer, or different types of optical functional layer.In addition, the 1st optical functional layer of the invention and the 2nd optics
Functional layer can be formed by identical type or different types of multilayer optical functional layer.
At least any one optical functional layer in above-mentioned 1st optical functional layer of the invention and the 2nd optical functional layer uses
Containing pigment and the optical functional layer of range that mist degree is 0.2~2%.Above-mentioned 1st optical functional layer and the 2nd optical functional layer
At least either or both the optical functional layer of range that with pigment and mist degree is 0.2~2% can be used, it is low from meeting
From the perspective of reflectivity and high contrast, preferably at least the 1st optical functional layer contains the model that pigment and mist degree are 0.2~2%
It encloses.In addition, forming the 1st optical functional layer of the invention, the 2nd light by identical type or different types of multilayer optical functional layer
In the case where learning functional layer, at least 1 layer of use in multilayer is containing pigment and the layer of range that mist degree is 0.2~2%.
Although being controlled as the optics function of 0.2~2% range using the mist degree of the above-mentioned optical functional layer with pigment
Ergosphere, but above-mentioned mist degree is preferably 0.2~1.5%, further preferably 0.2~1.2%, further preferably 0.2~1%.
When the mist degree of the above-mentioned optical functional layer with pigment is less than 0.2%, Polarization Control not small by mist degree bring, because
This, must not believe that the superiority of its contrast is higher than previous.On the other hand, the mist degree of the above-mentioned optical functional layer with pigment is big
When 2%, the contrast of liquid crystal display panel cannot keep.Especially controlled by the mist degree of the above-mentioned optical functional layer containing pigment
For 0.2~1.5% range in the case where, with do not have pigment optical functional layer compared with, mist degree can be improved, and can mention
High contrast.
It should be noted that being used in any one of above-mentioned 1st optical functional layer of the invention or the 2nd optical functional layer
When above-mentioned optical functional layer (range that mist degree is 0.2~2%) with pigment, if the mist degree of other optical functional layers
Height then impacts the contrast of liquid crystal display panel, it is therefore preferable that using without pigment in other optical functional layers
Optical functional layer or optical functional layer (but mist degree is less than 0.2%) with pigment.
The adjustment of the mist degree (0.2~2%) of the above-mentioned optical functional layer with pigment can pass through the choosing of control pigment
It selects, the thickness of the content of pigment, optical functional layer carries out.
<pigment>
Various pigments can be used in the pigment contained in optical functional layer of the invention.As pigment, example can be enumerated
Such as: in tetraazatetradecane porphyrin class, porphyrin, cyanines class, azo, methylene pyrroles (pyrromethene) class, side are sour
(squarylium) the various compounds such as class, xanthene class, oxonols class, sour cyanines (squaraine) class in side.From the sight of wide colour gamut
Point set out, above-mentioned pigment be preferably tetraazatetradecane porphyrin class pigment, porphyrin pigment, cyanines class pigment, side acid inClass pigment, side
Sour cyanines class pigment, particularly preferably tetraazatetradecane porphyrin class pigment.Above-mentioned pigment is specifically disclosed in Japanese Unexamined Patent Publication 2011-116818
Bulletin etc..Above-mentioned pigment can be used only a kind, two or more can also be applied in combination.
At least any wavelength of the above-mentioned pigment preferably in 570~610nm of 470~510nm of wave-length coverage and wave-length coverage
Range has maximum absorption wavelength.In above-mentioned wave-length coverage there is the pigment of maximum absorption wavelength to can absorb color performance to be not required to
Want it is luminous come inhibit this shine, be effective to wide colour gamut.There is maximum absorption wavelength as in above-mentioned wave-length coverage
It is preferable to use tetraazatetradecane porphyrin class pigments for pigment.For example, showing absorption maximum as in 570~610nm of wave-length coverage
The pigment of wavelength can be enumerated for example: the tetraazatetradecane porphyrin class compound (trade name: PD- of Yamamoto Chemicals Co., Ltd's manufacture
320, PD311), the tetraazatetradecane porphyrin class compound (trade name: FDG-007) etc. of hillside plot chemical industry Co., Ltd. manufacture.It needs
It is noted that the measurement of the maximum absorption wavelength of pigment passes through the spectrophotometer (V- of Japan Spectroscopy Corporation's manufacture
570) Lai Jinhang.
The content of pigment in optical functional layer of the invention can absorbing wavelength range according to pigment, light absorption system
Number, base polymer type adjust, in general, from the viewpoint of take into account the control of wide colour gamut and mist degree, relative to base
100 parts by weight of plinth polymer, preferably 0.01~5 parts by weight, more preferably 0.05~3 parts by weight, further preferably 0.1~
1 parts by weight.Especially using tetraazatetradecane porphyrin class pigment, preferably above range.
<adhesive phase>
As optical functional layer of the invention, adhesive phase can be enumerated, above-mentioned adhesive phase can be by containing adhesive
The adhesive composition of base polymer is formed.The type of adhesiveness base polymer is not particularly limited, can be enumerated
Such as: rubber polymer, (methyl) acrylic polymer, silicone-based polymers, carbamate quasi polymer, ethylene
Base alkyl ether polymer, polyvinyl alcohol based polymer, polyvinylpyrrolidone--type polymer, polyacrylamide polymer,
The various polymer such as cellulosic polymer.
Adhesive composition of the invention includes adhesiveness base polymer as principal component.Principal component refers in adhesive
The most ingredient of content ratio in all solids ingredient that composition is included, for example, referring to what adhesive composition was included
The ingredient more than 50 weight % is accounted in all solids ingredient, more refers to the ingredient accounted for more than 70 weight %.
In these adhesiveness base polymers, preferably optical transparence is excellent, shows wetability appropriate, coherency
And the excellent polymer such as the adhesion characteristic and weatherability of cementability, heat resistance.As the polymerization for showing such feature
It is preferable to use (methyl) acrylic polymers for object.Hereinafter, the acrylic adhesives of the forming material to adhesive phase
It is illustrated, the acrylic adhesives are to contain (methyl) alkyl acrylate as (methyl) acrylic acid of monomeric unit
Quasi polymer is as basic polymer.
<(methyl) acrylic polymer>
Above-mentioned (methyl) acrylic polymer usually contains (methyl) alkyl acrylate conduct as monomeric unit
Principal component.It should be noted that (methyl) acrylate refers to acrylate and/or methacrylate, (first of the invention
Base) meaning is identical.
As (methyl) alkyl acrylate for the main framing for constituting above-mentioned (methyl) acrylic polymer, can example go out
(methyl) alkyl acrylate that the atomic number of alkyl carbon of straight-chain or branched is 1~18.They can be used alone or group
It closes and uses.The average carbon atom number of these alkyl is preferably 3~9.
In addition, considering from viewpoints such as adhesion characteristic, durability, the adjustment of phase difference, the adjustment of refractive index, can be used
(methyl) alkyl acrylate containing aromatic rings as (methyl) phenoxyethyl acrylate, (methyl) benzyl acrylate.
In order to improve cementability, heat resistance, a kind can be imported by being copolymerized in above-mentioned (methyl) acrylic polymer
Above comonomer, the comonomer has (methyl) acryloyl group or vinyl etc., and there are the polymerisms of unsaturated double-bond
Functional group.It as the specific example of such comonomer, can enumerate for example: (methyl) acrylic acid 2- hydroxy methacrylate, (first
Base) acrylic acid 3- hydroxy propyl ester, (methyl) acrylic acid 4- hydroxybutyl, the own ester of (methyl) acrylic acid 6- hydroxyl, (methyl) propylene
Sour 8- hydroxyl monooctyl ester, (methyl) acrylic acid 10- hydroxyl last of the ten Heavenly stems ester, (methyl) acrylic acid 12- hydroxylauric ester, acrylic acid (4- hydroxyl first
Butylcyclohexyl) the hydroxyls monomer such as methyl esters；(methyl) acrylic acid, (methyl) carboxy ethyl acrylate, (methyl) carboxypentyl acrylate,
The carboxyl group-containing monomers such as itaconic acid, maleic acid, fumaric acid, crotonic acid；The monomers containing anhydride group such as maleic anhydride, itaconic anhydride；Propylene
The caprolactones addition product of acid；Styrene sulfonic acid, allyl sulphonic acid, 2- (methyl) acrylamide-2-methylpro panesulfonic acid, (methyl)
The monomers containing sulfonic group such as acryamidopropanesulfonic acid, (methyl) acrylic acid sulfonic acid propyl ester, (methyl) propane sulfonic acid；2-
Phosphorous acid-based monomers such as hydroxyethyl acryloyl phosphate etc..
In addition, the example of the monomer as modified purpose, can also enumerate: (methyl) acrylamide, N, N- dimethyl (first
Base) acrylamide, N- butyl (methyl) acrylamide, N- methylol (methyl) acrylamide, N- hydroxymethyl-propane (methyl) third
Acrylamide etc. (N- substitution) amides monomer；(methyl) acrylate, (methyl) acrylic acid N, N- dimethylaminoethyl
(methyl) the acrylic acid alkylaminoalkyl esters monomers such as ester, (methyl) tbutylaminoethylacrylate；(methyl) acrylic acid
(methyl) alkoxyalkyl acrylate class monomer such as methoxy acrylate, (methyl) ethoxyethyl acrylate；N- (methyl) third
Alkene acyl-oxygen methylene succinimide, N- (methyl) acryloyl -6- oxygroup hexa-methylene succinimide, N- (methyl) propylene
The succinimides class monomers such as eight methylene succinimide of acyl -8- oxygroup, N- acryloyl morpholine；N- cyclohexyl maleimide
The maleimides monomers such as amine, N- isopropylmaleimide, N- lauryl maleimide, N-phenylmaleimide；
N- methyl clothing health acid imide, N- ethyl clothing health acid imide, N- butyl clothing health acid imide, N- octyl clothing health acid imide, N-2- ethyl
Clothing health acid imide monomers such as hexyl clothing health acid imide, N- cyclohexyl clothing health acid imide, N- lauryl clothing health acid imide etc..
In addition, vinyl acetate, vinyl propionate, n-vinyl pyrrolidone, first can also be used as modified monomer
Base vinyl pyrrolidone, vinylpyridine, vinylpiperidone, vinyl pyrimidine, vinyl piperazine, vinylpyrazine, second
Alkenyl pyrroles, vinyl imidazole, vinylAzoles, polyvinyl morpholinone, N- vinylcarboxylic acid amide type, styrene, Alpha-Methyl benzene
The vinyl monomers such as ethylene, N- caprolactam；The cyanoacrylates monomer such as acrylonitrile, methacrylonitrile；(first
Base) acrylic monomer containing epoxy group such as glycidyl acrylate；(methyl) polyalkylene glycol acrylate ester, (methyl) acrylic acid
The glycols third such as polypropylene glycol ester, (methyl) acrylic methoxy glycol ester, (methyl) methoxyethyl polypropylene glycol ester
Olefin(e) acid ester monomer；(methyl) tetrahydrofurfuryl acrylate, fluorine-containing (methyl) acrylate, organosilicon (methyl) acrylate, propylene
Acrylic ester monomers such as sour 2- methoxy acrylate etc..It can also enumerate: isoprene, butadiene, isobutene, vinyl ethers
Deng.
In addition, can also enumerate the silanes monomer etc. containing silicon atom as the monomer other than the above that can be copolymerized.Make
It for silanes monomer, can enumerate for example: 3- acryloxypropyl triethoxysilane, vinyltrimethoxysilane, second
Alkenyl triethoxysilane, 4- vinyl butyl trimethoxy silane, 4- vinyl butyl triethoxysilane, 8- vinyl are pungent
Base trimethoxy silane, 8- vinyl octyltri-ethoxysilane, 10- Methacryloxydecyl trimethoxy silane, 10-
Acryloxy ruthenium trimethoxysilane, 10- Methacryloxydecyl triethoxysilane, the 10- acryloxy last of the ten Heavenly stems
Ethyl triethoxy silicane alkane etc..
In addition, tripropylene glycol two (methyl) acrylate, tetraethylene glycol two (methyl) third can be used as comonomer
Olefin(e) acid ester, 1,6-hexylene glycols two (methyl) acrylate, bisphenol A diglycidyl ether two (methyl) acrylate, neopentyl glycol
Two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, pentaerythrite three (methyl) acrylate, Ji Wusi
Alcohol four (methyl) acrylate, dipentaerythritol five (methyl) acrylate, dipentaerythritol six (methyl) acrylate, in oneself
Carboxylate of (methyl) acrylic acid such as ester modified dipentaerythritol six (methyl) acrylate and polyalcohol etc. has 2 or more
The polyfunctional monomer of the unsaturated double-bonds such as (methyl) acryloyl group, vinyl, and in polyester, epoxy, carbamate etc.
Skeleton addition 2 or more is unsaturated double as (methyl) acryloyl group of functional group identical with monomer component, vinyl etc.
Polyester obtained from key (methyl) acrylate, epoxy (methyl) acrylate, carbamate (methyl) acrylate etc..
Above-mentioned (methyl) acrylic polymer is in the weight rate for all constituting monomer with (methyl) acrylic acid alkyl
Ester is as principal component, and the ratio of the above-mentioned comonomer in (methyl) acrylic polymer is not particularly limited, above-mentioned copolymerization
The ratio of monomer all constitute monomers weight rates in preferably 0~20% or so, preferably 0.1~15% or so, more
Preferably 0.1~10% or so.
In these comonomers, from the viewpoint of cementability, durability, it is preferable to use hydroxyl monomer, contain carboxyl
Monomer.Hydroxyl monomer and carboxyl group-containing monomer can be applied in combination.These comonomers contain crosslinking agent in adhesive composition
The reflecting point of Shi Chengwei and crosslinking agent.Hydroxyl monomer, carboxyl group-containing monomer etc. and the reactivity of intermolecular cross-linking agent are strong, Ke Yiti
Coherency, the heat resistance for the adhesive phase that height obtains, therefore it is preferable to use.From the viewpoint of re-workability, preferred hydroxyl
Monomer, in addition, from the viewpoint of taking into account durability and re-workability, preferred carboxyl group-containing monomer.
In the case where containing hydroxyl monomer as above-mentioned comonomer, ratio is preferably 0.01~15 weight %,
More preferably 0.03~10 weight %, further preferably 0.05~7 weight %.Containing carboxyl group-containing monomer as above-mentioned copolymerization
In the case where monomer, ratio is preferably 0.05~10 weight %, more preferably 0.1~8 weight %, and further preferably 0.2
~6 weight %.
(methyl) acrylic polymer of the invention is the polymerization of 500,000~3,000,000 ranges usually using weight average molecular weight
Object.In view of durability, particularly heat resistance, it is preferable to use the polymer that weight average molecular weight is 700,000~2,700,000, further excellent
It is selected as 800,000~2,500,000.When weight average molecular weight is less than 500,000, from the viewpoint of heat resistance not preferably.In addition, weight average molecular weight
When greater than 3,000,000, a large amount of retarder thinner is needed in order to be adjusted to the viscosity for coating, leads to increased costs, therefore not
It is preferred that.It is measured by GPC (gel permeation chromatography) and is converted by polystyrene it should be noted that weight average molecular weight refers to
And calculated value.
The manufacture of such (methyl) acrylic polymer can suitably select the radiation such as polymerisation in solution, UV polymerization poly-
Manufacturing method well known to conjunction, bulk polymerization, emulsion polymerization, various free radical polymerizations etc..In addition, obtained (methyl) acrylic compounds
Polymer can be the arbitrary copolymers such as random copolymer, block copolymer, graft copolymer.
It should be noted that in polymerisation in solution, as polymer solvent, such as ethyl acetate, toluene can be used etc..As
Specific polymerisation in solution example, polymerization initiator is added in reaction under the non-active gas air-flows such as nitrogen, usually on 50~70 DEG C of left sides
It is carried out under the right side, 5~30 hours or so reaction conditions.
Polymerization initiator, chain-transferring agent used in free radical polymerization, emulsifier etc. are not particularly limited, it can be appropriate
Selection uses.It should be noted that the weight average molecular weight of (methyl) acrylic polymer can pass through polymerization initiator, chain tra nsfer
Dosage, reaction condition of agent etc. are controlled, and are suitable for their dosage etc. of adjustment according to their type.
It as radical polymerization initiator, can enumerate for example: 2,2 '-azodiisobutyronitriles, bis- (the 2- amidines of 2,2 '-azos
Base propane) dihydrochloride, bis- [2- (5- methyl -2- imidazoline -2- base) propane] dihydrochlorides of 2,2 '-azos, 2,2 '-azos pair
(2- methyl-prop amidine) dithionate, 2,2 '-azos bis- (N, N '-dimethyleneisobutylamidines), bis- [N- (the 2- carboxyls of 2,2 '-azos
Ethyl) -2- methyl-prop amidine] azo-initiators, persulfuric acid such as hydrate (Wako Pure Chemical Industries, Ltd. manufacture, VA-057)
The persulfates such as potassium, ammonium persulfate, dicetyl peroxydicarbonate two (2- ethylhexyl) ester, (the 4- tert-butyl ring of dicetyl peroxydicarbonate two
Hexyl) ester, peroxide-butyl carbonate, new peroxide tert-butyl caprate, talkyl peropivalate, peroxidating spy penta
Tert-butyl acrylate, dilauroyl peroxide, the positive decoyl of peroxidating two, peroxidating -2 ethyl hexanoic acid 1,1,3,3- tetramethyl butyl ester, mistake
Aoxidize two (4- toluyls), dibenzoyl peroxide, peroxidating tert-butyl isobutyrate, 1,1- bis- (tert-hexyl peroxide) ring
The peroxide type initiators such as hexane, tert-butyl hydroperoxide, hydrogen peroxide, the combination of persulfate and sodium hydrogensulfite, mistake
The redox series initiators etc. that the peroxide such as the combination of oxide and sodium ascorbate and reducing agent are composed, but not
It is defined in this.
Above-mentioned radical polymerization initiator can be used alone, and in addition can also mix two or more use, total content phase
It is preferably 0.005~1 parts by weight or so for 100 parts by weight of monomer, more preferably 0.02~0.5 parts by weight or so.
As chain-transferring agent, it can be mentioned, for example: lauryl mercaptan, glycidyl mercaptan, thioacetic acid, 2- sulfydryl second
Alcohol, thioglycolic acid, thioglycolic acid 2- ethylhexyl, 2,3- dimercapto -1- propyl alcohol etc..Chain-transferring agent can be used alone,
In addition two or more use can also be mixed, total content is preferably 0.1 weight relative to 100 parts by weight of total amount of monomer component
Part or so is following.
In addition, as the emulsifier used when carrying out emulsion polymerization, it can be mentioned, for example: lauryl sodium sulfate, 12
The yin such as alkylsurfuric acid ammonium, neopelex, polyoxyethylene alkyl ether ammonium sulfate, polyoxyethylene alkyl phenyl ether sodium sulphate
Ionic emulsifying agent, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, polyoxyethylene-polyoxy
Nonionic emulsifier such as propylene block copolymer etc..These emulsifiers can be used alone, and can also be applied in combination 2 kinds
More than.
In addition, having imported the cream of the free-radical polymerised functional groups such as acrylic, allyl ether as reactive emulsifier
Agent specifically includes for example: AQUALON HS-10, HS-20, KH-10, BC-05, BC-10, BC-20 (are the first industry above
Pharmaceutical Co., Ltd's manufacture), ADEKA REASOAP SE10N (manufacture of rising sun electrification work Co., Ltd.) etc..Reactive emulsifier exists
Enter polymer chain after polymerization, thus improve water resistance, is preferred.Total amount of the dosage of emulsifier relative to monomer component
100 parts by weight are preferably 0.3~5 parts by weight, from polymerization stability, mechanical stability, more preferably 0.5~1 parts by weight.
<crosslinking agent>
In addition, in the present invention, crosslinking agent can be contained by being formed in the adhesive composition of adhesive phase.As crosslinking
Organic crosslinking agent, multifunctional metallo-chelate can be used in agent.As organic crosslinking agent, can enumerate: isocyanates
Crosslinking agent, peroxide crosslinking agent, epoxies crosslinking agent, imines crosslinking agent etc..Multifunctional metallo-chelate is multivalence gold
Made of category and organic compound covalent bonding or coordination bonding.As polyvalent metal atom, can enumerate: Al, Cr, Zr, Co,
Cu, Fe, Ni, V, Zn, In, Ca, Mg, Mn, Y, Ce, Sr, Ba, Mo, La, Sn, Ti etc..As having for covalent bonding or coordination bonding
Atom in machine compound can enumerate oxygen atom etc., as organic compound, can enumerate: Arrcostab, alcoholic compound, carboxylic
Acid compound, ether compound, ketone compound etc..
As the compound of isocyanates crosslinking agent, can enumerate for example: toluene di-isocyanate(TDI), chlorine phenylene two are different
Cyanate, tetramethylene diisocyanate, benzene dimethylene diisocyanate, methyl diphenylene diisocyanate, hydrogenation hexichol
The isocyanate-monomers such as dicyclohexylmethane diisocyanate and makes the additions such as these isocyanate-monomers and trimethylolpropane and obtain
Isocyanate compound, isocyanuric acid carboxylate, biuret form compound and polyether polyol, polyester polyol, propylene
Acid polyol ester, polybutadiene polyol, polyisoprene polyol etc. have passed through the carbamate prepolymer of addition reaction
The isocyanates etc. of type.Particularly preferred polyisocyanate compound is such as selected from hexamethylene diisocyanate, two methylene of hydrogenation of benzene
One of group diisocyanate and isophorone diisocyanate or polyisocyanate compound as derived from it.Here, it selects
From hexamethylene diisocyanate, hydrogenation one of benzene dimethylene diisocyanate and isophorone diisocyanate or by
Its derivative polyisocyanate compound includes hexamethylene diisocyanate, hydrogenation benzene dimethylene diisocyanate, different Buddhist
That ketone diisocyanate, polyalcohol modified hexamethylene diisocyanate, polyalcohol modified hydrogenation phenylenedimethylidyne diisocyanate
Ester, trimer type hydrogenate benzene dimethylene diisocyanate and polyalcohol modified isophorone diisocyanate etc..For showing
It is anti-with hydroxyl especially using the acid contained in polymer, alkali as catalyst for the polyisocyanate compound that example goes out
It should carry out rapidly, therefore, be particularly helpful to accelerate crosslinking rate, thus preferably.
As peroxide, as long as generating free radicals reactive species by heating or illumination and making the base of adhesive composition
The peroxide that the crosslinking of plinth polymer carries out, it will be able to suitably use, but in view of operability, stability are, it is preferable to use 1
The peroxide that minute half life temperature is 80 DEG C~160 DEG C is more preferably 90 DEG C~140 DEG C using 1 minute half life temperature
Peroxide.
It as above-mentioned peroxide, can enumerate for example: dicetyl peroxydicarbonate two (4- tert-butylcyclohexyl) ester (1 minute
Half life temperature: 92.1 DEG C), peroxide-butyl carbonate (1 minute half life temperature: 92.4 DEG C), peroxidating neodecanoic acid
The tert-butyl ester (1 minute half life temperature: 103.5 DEG C), talkyl peropivalate (1 minute half life temperature: 109.1 DEG C),
The peroxidating pivalic acid tert-butyl ester (1 minute half life temperature: 110.3 DEG C), dilauroyl peroxide (1 minute half life temperature:
116.4 DEG C), the positive decoyl of peroxidating two (1 minute half life temperature: 117.4 DEG C), peroxidating -2 ethyl hexanoic acid 1,1,3,3- tetra-
Methylbutyl butenoate (1 minute half life temperature: 124.3 DEG C), peroxidating two (4- toluyl) (1 minute half life temperature:
128.2 DEG C), dibenzoyl peroxide (1 minute half life temperature: 130.0 DEG C), peroxidating tert-butyl isobutyrate (decline for 1 minute half
Phase temperature: 136.1 DEG C), 1,1- bis- (tert-hexyl peroxide) hexamethylene (1 minute half life temperature: 149.2 DEG C) etc..Wherein, special
Be not from cross-linking reaction efficiency it is excellent from the aspect of, it is preferable to use dicetyl peroxydicarbonate two (4- tert-butylcyclohexyl) ester (1 minute
Half life temperature: 92.1 DEG C), dilauroyl peroxide (1 minute half life temperature: 116.4 DEG C), (1 point of dibenzoyl peroxide
Clock half life temperature: 130.0 DEG C) etc..
It should be noted that the half-life period of peroxide be characterize peroxide decomposition rate index, refer to until
The residual quantity of peroxide becomes the time until half.The decomposition temperature of half-life period or in office is obtained about with any time
Half-life at a temperature of meaning, it is on the books in catalogue of manufacturer etc., such as " having in NOF Corp
Machine peroxide product catalogue (organic peracid compound カ タ ロ グ) the 9th edition (in May, 2003) " etc. in it is on the books.
It is above-mentioned relative to 100 parts by weight of base polymers such as (methyl) acrylic polymer in adhesive composition
The dosage of crosslinking agent is preferably 20 parts by weight hereinafter, more preferably 0.01~20 parts by weight, further preferably 0.03~10 weight
Measure part.It should be noted that moisture-proof is insufficient when above-mentioned crosslinking agent is more than 20 parts by weight, hair is easy in reliability test etc.
It is raw to peel off.
In addition, silane coupling agent can be contained by being formed in the adhesive composition of adhesive phase of the invention.By using
Silane coupling agent can be improved durability.As silane coupling agent, it is specific enumerable for example: 3- glycidoxypropyl group front three
Oxysilane, 3- epoxy propoxy propyl triethoxysilane, 3- glycidoxypropyl diethoxy silane, 2- (3,
4- epoxycyclohexyl) ethyl trimethoxy silane etc. contains epoxy silane coupling, 3- TSL 8330, N-2-
(amino-ethyl) -3- aminopropylmethyldimethoxysilane, 3- triethoxysilyl-N- (1,3- dimethylbutylene)
Propylamine, N- phenyl-gamma-amino propyl trimethoxy silicane etc. contain amino silicane coupling agent, 3- acryloxypropyl trimethoxy
Base silane, 3- methacryloxypropyl etc. contain (methyl) acrylic silane coupling agent, 3- isocyanic acid
Coupling agents containing isocyanato silanes such as ester propyl-triethoxysilicane etc..
Above-mentioned silane coupling agent can be used alone, and in addition can also mix two or more use, for its total content
It says, is preferably relative to 100 parts by weight of base polymers, above-mentioned silane coupling agents such as above-mentioned (methyl) acrylic polymers
0.001~5 parts by weight, more preferably 0.01~1 parts by weight, further preferably 0.02~1 parts by weight, further preferably
0.05~0.6 parts by weight.This is to improve durability, the appropriate amount kept to the bonding force of the optical components such as liquid crystal cells.
Furthermore, in the present invention it is possible to cooperate organic silicon modified by polyether in the adhesive composition for forming adhesive phase.
Compound disclosed in such as Japanese Unexamined Patent Publication 2010-275522 bulletin can be used in organic silicon modified by polyether.
Furthermore, in the present invention it is possible to contain other well known addition in the adhesive composition for forming adhesive phase
Agent, can be properly added according to the purposes used the powder such as colorant, pigment, dyestuff, surfactant, plasticizer,
Tackifier, surface lubricant, levelling agent, softening agent, age resister, antioxidant, light stabilizer, ultraviolet absorbing agent, polymerization inhibitor
Agent, inorganic or organic filler, metal powder or granule, foil-like object etc..In addition, can also use and add in controllable range
Add the redox class of reducing agent.
Adhesive phase is formed by above-mentioned adhesive composition, when forming adhesive phase, is preferably adjusting adding for crosslinking agent
While dosage, the influence of crosslinking Treatment temperature, crosslinking Treatment time is fully considered.
Crosslinking Treatment temperature, crosslinking Treatment time can be adjusted according to the crosslinking agent used.Crosslinking Treatment temperature is preferably
170 DEG C or less.
In addition, above-mentioned crosslinking Treatment can carry out at the temperature at which the drying process of adhesive phase, it can also be in drying
Otherwise designed crosslinking Treatment process carries out after process.
In addition, about the crosslinking Treatment time, it may be considered that productivity, operability are set, but usually 0.2~20
Minute or so, preferably 0.5~10 minute or so.
As the method for forming adhesive phase, made using following method: for example, above-mentioned adhesive composition is applied
It is distributed in the diaphragm etc. that have passed through lift-off processing, after drying and removing polymer solvent etc. and forming adhesive phase, is transferred to polarization
The method of film；Alternatively, be coated with above-mentioned adhesive composition on polarizing coating, dry and remove polymer solvent etc. and on polarizing coating shape
The method etc. of composite adhesives layer.It should be noted that suitably can also be newly added in addition to polymer solvent when coating adhesive
More than one solvent.
As the diaphragm being release-treated, organosilicon peeling liner is preferably used.By adhesive composite of the invention
It is coated on such liner above and makes it dry and formed in the process of adhesive phase, it, can as the method for keeping adhesive dry
According to purpose suitably using suitable method.It is preferred that using the method being thermally dried to above-mentioned coated film.Heating is dry
Dry temperature is preferably 40 DEG C~200 DEG C, more preferably 50 DEG C~180 DEG C, particularly preferably 70 DEG C~170 DEG C.By making to heat
Temperature is in above-mentioned range, the available adhesive with excellent adhesion characteristic.
Drying time can be suitably using the suitable time.Above-mentioned drying time is preferably 5 seconds~20 minutes, into one
Step preferably 5 seconds~10 minutes, particularly preferably 10 seconds~5 minutes.
Furthermore it is possible to the surface of polarizing coating formed adhesion promoting layer or implementing sided corona treatment, corona treatment etc. it is various
Adhesive phase is formed after easy bonding processing.Easy bonding processing is carried out alternatively, it is also possible to the surface to adhesive phase.
As the forming method of above-mentioned adhesive phase, various methods can be used.It is specific enumerable for example: rolling method, roller
Rubbing method, gravure coating process, reversed rubbing method, roller brush method, spray coating method, dipping rolling method, stick coating method, knife coating, air knife is licked to apply
Cloth method, die lip rubbing method, utilizes the methods of extrusion coating methods of die coating machine etc. at curtain coating.
The thickness of above-mentioned adhesive phase is not particularly limited, for example, 1~100 μm or so, preferably 2~50 μm, more excellent
It is selected as 2~40 μm, further preferably 5~35 μm.From adjust the adhesive phase mist degree from the aspect of, it is preferably above-mentioned containing
30 μm of thickness or less of the adhesive phase of pigment.The thickness of above-mentioned adhesive phase is preferably 28 μm hereinafter, further preferably 23 μ
M or less.
In the case where the exposure of above-mentioned adhesive phase, piece (diaphragm) the protection adhesive that have passed through lift-off processing can use
Layer, until for actual use.
<film layer>
In addition, can enumerate film layer as optical functional layer of the invention, above-mentioned film layer can be by containing film formation base
The composition of plinth polymer is formed.As the material for the base polymer for forming film layer, can illustrate saturating with the composition that describes below
The same material of the material of bright protective film.As above-mentioned material, particularly preferably uses the celluosic resins such as cellulose triacetate, gathers
Ester resin, (methyl) acrylic resin, cyclic polyolefin resin (norbornene resin) etc..Film layer can be properly used bonding
Agent, adhesive etc. and be suitable for polarizing coating.
The forming method of film layer containing pigment can use various methods.For example, can be by making above-mentioned resinous wood
The grain dissolution of material when solvent hybrid pigment and prepare composition, the composition is cast, is squeezed out and is manufactured film layer.This
When, film layer can be shaped to thickness appropriate.When preparing above-mentioned composition, it can suitably cooperate additive.
The thickness of above-mentioned film layer is not particularly limited, identical as adhesive phase, and for example, 1~100 μm or so.Preferably 2
~50 μm, more preferably 2~40 μm, further preferably 5~35 μm.Above-mentioned diaphragm is readily applicable to film layer.
As the constituent material of above-mentioned diaphragm, it can be mentioned, for example: polyethylene, polypropylene, polyethylene terephthalate,
What the porous materials such as the plastic foils such as polyester film, paper, cloth, non-woven fabrics, net, foamed sheet, metal foil and their layered product etc. were suitable for
Slice substance etc., from the excellent aspect of surface smoothness, it is preferable to use plastic foil.
As the plastic foil, as long as the film of above-mentioned optical functional layer (especially adhesive phase) can be protected, do not have
It is particularly limited to, it can be mentioned, for example: polyvinyl alcohol film, polyethylene film, polypropylene screen, polybutene film, polybutadiene film, poly- methyl
Amylene film, polychloroethylene film, vinyl chloride copolymer film, polyethylene terephthalate film, polybutylene terephthalate (PBT)
Film, polyurethane film, vinyl-vinyl acetate copolymer film etc..
The thickness of above-mentioned diaphragm is usually 5~200 μm, and preferably 5~100 μm or so.It can also be as needed using having
Machine silicon class, fluorinated, chain alkyl class or release agent, the silicon dioxide powder of fatty acid acyl amine etc. demould above-mentioned diaphragm
And antifouling process or the antistatic treatment for being coated by type, is mixed into type, vapor deposition type for above-mentioned diaphragm etc..Especially it is possible to logical
It crosses and is suitably carried out by the lift-off processings such as organosilicon processing, chain alkyl processing, fluorine processing and is further mentioned for the surface of above-mentioned diaphragm
Fissility of the height relative to above-mentioned optical functional layer (especially adhesive phase).
It should be noted that the adhesive phase is fitting in the case where above-mentioned optical functional layer is adhesive phase
It is used when liquid crystal cells, it can also be in the form of being previously provided with the polarizing coating with adhesive phase of adhesive phase on polarizing coating
It uses.The piece being release-treated used when making the polarizing coating with adhesive phase can be directly as with the inclined of adhesive phase
The diaphragm of vibrating diaphragm uses, and can simplify in terms of process.
<polarizing coating>
As the 1st polarizing coating of the invention, the 2nd polarizing coating, the one or both sides for being generally used in above-mentioned polarizer have
The polarizing coating of transparent protective film.
Above-mentioned polarizer is not particularly limited, and various polarizers can be used.As polarizer, it can be mentioned, for example make iodine,
Dichroic substance as dichroic dye is adsorbed in polyvinyl alcohol film, part formalizing polyvinyl alcohol film, ethylene-second
The hydrophilic macromolecule films such as the partly-hydrolysed film of vinyl acetate copolymer class simultaneously carry out film obtained from simple tension, polyvinyl alcohol
Polyenoid based oriented films such as dehydration treatment, the dehydrochlorinated products of polyvinyl chloride etc..Wherein, preferably by polyvinyl alcohol film and
The polarizer that the dichroic substances such as iodine are formed.The thickness of these polarizers is not particularly limited, and usually 80 μm or so or less.
Above-mentioned polyvinyl alcohol film is dyed with iodine and carry out polarizer made of simple tension for example and can pass through by
Polyvinyl alcohol film immersion dyes in the aqueous solution of iodine and is stretched to 3~7 times of former length and is made.It can also be impregnated in
As needed in the aqueous solution of potassium iodide optionally comprising boric acid, zinc sulfate, zinc chloride etc. etc..Further, it is possible to as needed
And polyvinyl alcohol film immersion is washed in water before dyeing.By being washed to polyvinyl alcohol film, in addition to can
To wash away other than the dirt of polyvinyl alcohol film surface, antiblocking agent, also having makes polyvinyl alcohol membrane swelling to prevent from contaminating
The unequal non-uniform effect of color.Stretching can carry out after being dyed using iodine, can also be stretched with Edge Coloring side, in addition
It can also be dyed after being stretched using iodine.It can also be carried out in the aqueous solution of boric acid, potassium iodide etc. or water-bath
It stretches.
In addition, can be used as polarizer with a thickness of 10 μm of slim polarizers below.It is examined from the viewpoint of slimming
Consider, which is preferably 1~7 μm.The uneven thickness of such slim polarizer is small, and visibility is excellent, and size
Change small, therefore excellent in te pins of durability, and then can also realize slimming as the thickness of polarizing coating, in terms of these preferably.
As representative slim polarizer, Japanese Unexamined Patent Application 51-069644 bulletin, Japanese Unexamined Patent Publication can be enumerated
2000-338329 bulletin, WO2010/100917 pamphlet, the specification of PCT/JP2010/001460 or Japanese Patent Application
The slim polarizing coating recorded in 2010-269002 specification, Japanese Patent Application 2010-263692 specification.These are slim partially
Vibrating diaphragm can be by including by polyvinyl alcohol resin (hereinafter also referred to PVA resinoid) layer and stretching resin base material with laminated body
The state process stretched and the process dyed preparation method and obtain.If it is the preparation method, even if then PVA class tree
Rouge layer is relatively thin, is supported by being stretched with resin base material, can also be stretched without generating fracture etc. caused by stretching
Unfavorable condition.
It is including the process stretched with the state of laminated body and the work dyed as above-mentioned slim polarizing coating
In the preparation method of sequence, from can with high magnification is stretched and from the aspect of improving polarization property, preferably WO2010/100917
Number pamphlet, the specification of PCT/JP2010/001460 or Japanese Patent Application 2010-269002 specification, Japanese Patent Application
It is obtained and including the preparation method of the process stretched in boric acid aqueous solution as being recorded in 2010-263692 specification
The slim polarizer arrived, especially Japanese Patent Application 2010-269002 specification, Japanese Patent Application 2010-263692 specification
Passing through for middle record includes the process for secondarily stretch in atmosphere before being stretched in boric acid aqueous solution
Slim polarizer obtained from preparation method.
As the material for constituting transparent protective film, such as transparency, mechanical strength, thermal stability, moisture barrier can be used
The excellent thermoplastic resins such as property, isotropism.As the concrete example of such thermoplastic resin, cellulose triacetate can be enumerated
Equal celluosic resins, polyester resin, polyethersulfone resin, polysulfone resin, polycarbonate resin, polyamide, polyimides tree
Rouge, polyolefin resin, (methyl) acrylic resin, cyclic polyolefin resin (norbornene resin), polyarylate resin, polyphenyl
Vinyl, polyvinyl alcohol resin and their mixture.It should be noted that bonding can be passed through on one side in polarizer
Oxidant layer is bonded transparent protective film, uses (methyl) acrylic compounds, carbamates, propenoic methyl carbamate in another side
The thermosetting resins such as class, epoxies, organic silicon or ultraviolet curing resin are as transparent protective film.It can also be in transparent guarantor
The additive for being suitable for containing a kind of any of the above in cuticula.As additive, it can be mentioned, for example ultraviolet absorbing agent, antioxidant,
Lubricant, plasticizer, release agent, anti-coloring agent, fire retardant, nucleating agent, antistatic agent, pigment, colorant etc..Transparent protective film
In the content of above-mentioned thermoplastic resin be preferably 50~100 weight %, more preferably 50~99 weight %, further preferably
60~98 weight %, particularly preferably 70~97 weight %.The content of above-mentioned thermoplastic resin in transparent protective film is 50 weights
When measuring % or less, it is possible to be unable to fully show the high transparency etc. that thermoplastic resin has originally.
The thickness of transparent protective film is not particularly limited, for example, 10~90 μm or so, preferably 15~60 μm, more preferably
It is 20~50 μm.
Hard conating, anti-reflection layer, adherent layer, diffusion can be set in the face for not being bonded polarizer of above-mentioned transparent protective film
The functional layers (superficial layer) such as layer or antiglare layer.
As long as not limited especially for by the bonding agent optical clear of above-mentioned polarizer and transparent protective film fitting
The bonding agent of aqueous, solvent, hot melt class, the various forms of radical-curable, cationic curing type can be used, preferably in system
For aqueous adhesive or radical-curable bonding agent.
<liquid crystal display panel>
As described above, liquid crystal display panel of the invention includes the liquid crystal cells of IPS mode, the visible side from the liquid crystal cells
The 2nd for acting the 1st optical functional layer configured in order and the 1st polarizing coating and being configured in order from the back side of the liquid crystal cells
Optical functional layer and the 2nd polarizing coating.In the formation of liquid crystal display panel other than above-mentioned polarizing coating, other optics can also be used
Layer.The optical layer is not particularly limited, for example, 1 layer or 2 can be used in the visible side and/or back side in liquid crystal cells
Layer or more reflector plate, half transmitting piece, phase difference film (including the wave plates such as 1/2,1/4), vision compensation film, brightness improve the liquid such as film
Optical layer used in the formation of crystal panel.
<liquid crystal display device>
Liquid crystal display device can be by using the structures such as above-mentioned liquid crystal display panel and the lighting system used as needed
It is suitable for assembling and importing driving circuit etc. and formed at component.In addition, when forming liquid crystal display device, for example, can be suitable
When position configure 1 layer or 2 layers or more diffusion sheet, antiglare layer, antireflection film, screening glass, prism array, lens array sheet,
The suitable component such as light diffusing sheet, backlight.Furthermore it is possible to form the liquid for having used backlight or reflector plate in the illumination system
The suitable liquid crystal display device such as crystal device.
Embodiment
Hereinafter, the present invention is concretely demonstrated by embodiment, but the present invention is not limited to the examples.It needs
It is noted that part and % in each example are weight basis.Hereinafter, the condition that is placed at room temperature for being not particularly limited is 23
DEG C, 65%RH.
<measurement of the weight average molecular weight of (methyl) acrylic polymer>
The weight average molecular weight (Mw) of (methyl) acrylic polymer is measured by GPC (gel permeation chromatography).For
Mw/Mn is similarly determined.
Analytical equipment: TOSOH Co., Ltd's manufacture, HLC-8120GPC
Column: TOSOH Co., Ltd's manufacture, G7000HXL+GMHXL+GMHXL
Column dimension: each 7.8mm φ × 30cm amounts to 90cm
Column temperature: 40 DEG C
Flow: 0.8mL/min
Injection rate: 100 μ L
Eluent: tetrahydrofuran
Detector: differential refractometer (RI)
Standard sample: polystyrene
Comparative example 1
<production of polarizing coating>
In order to make slim polarization layer, firstly, the stacking to the PVA layer for having 9 μm of thickness that forms a film in amorphism PET base material
Stretching laminated body is made by assisting tension in 130 DEG C of draft temperature of atmosphere in body, next, by dyeing tensile layer
Coloring laminated body is made in stack, in turn, by being stretched in 65 degree of draft temperature of boric acid water by coloring laminated body always to stretch again
Rate reaches 5.94 times of mode and what amorphism PET base material was integrally drawn into 4 μ m thicks includes PVA layers of optical film laminate.
2 steps in this way stretch, and 4 μm of thickness of composition high-performance polarization layer can be generated includes PVA layers of optical film laminate,
The high-performance polarization layer is that the PVA numberator height of the PVA layer to form a film in amorphism PET base material is orientated and by dyeing
Made of the iodine of absorption is height-oriented in one direction in the form of more iodide ion complex compounds.In turn, it is laminated in the optical film
The surface painting polyethylene alcohols bonding agent of the polarization layer of body, and it is bonded the acrylic resin of 40 μ m-thicks by saponification process
Then film removes amorphism PET base material, made the polarizing coating using slim polarizer.It is referred to as slim polarizing coating.
<preparation of (methyl) acrylic polymer>
In the reaction vessel for having condenser, nitrogen ingress pipe, thermometer and agitating device, it is added and contains acrylic acid fourth
100 parts of ester, 0.01 part of acrylic acid 2- hydroxy methacrylate and 5 parts of acrylic acid of monomer mixture.Further, relative to above-mentioned monomer
100 parts of mixture, it is added 0.1 part of 2, the 2 '-azodiisobutyronitriles as polymerization initiator together with 100 parts of ethyl acetate, one
It is then maintained at the liquid temperature in flask near 55 DEG C while being slowly stirred and importing nitrogen progress nitrogen displacement on one side, has carried out 8
Hour polymerization reaction, be prepared for weight average molecular weight (Mw) 1,800,000, Mw/Mn=4.1 acrylic polymer solution (solid
30 weight % of constituent concentration).
(preparation of adhesive composition)
100 parts of the solid component of acrylic polymer solution relative to above-mentioned manufacture cooperates benzoyl peroxide (day
The trade name NYPER BMT of this grease Co., Ltd. manufacture) 0.3 part, isocyanates crosslinking agent (TOSOH Co., Ltd's manufacture
Trade name Coronate L) 1 part, obtain adhesive composition.
(production of the polarizing coating with adhesive phase)
Above-mentioned adhesive composition is equably coated on applicator and is gathered through what organic silicon remover was handled to benzene two
The surface of the peeling base (MRF38CK of Mitsubishi Plastics Inc's manufacture) of formic acid glycol ester film, and in 155 DEG C of air
It dries 2 minutes and carries out in circulating constant temperature oven, form 20 μm of thickness of adhesive phase.By the adhesive with pigment
Layer is transferred to polarizer (PVA layers) face of above-mentioned slim polarizing coating, has made the polarizing coating with adhesive phase.
(production of the liquid crystal display panel of IPS mode)
It (includes IPS mode that liquid crystal display panel is taken out from the LCD TV (43UF7710) that LG Electronic company manufactures
Liquid crystal cells liquid crystal display panel), the polarizing coating with adhesive phase of visible side is further removed from liquid crystal cells.By diaphragm
After being removed on the adhesive phase of the polarizing coating with adhesive phase of above-mentioned production, by the adhesive of the polarizing coating with adhesive phase
Layer is pasted on the part of the liquid crystal cells after having removed the above-mentioned polarizing coating with adhesive phase, has made the liquid crystal surface of IPS mode
Plate.
Embodiment 1
Solid component 100 when preparing the adhesive composition of comparative example 1, relative to acrylic polymer solution
Part, further cooperate tetraazatetradecane porphyrin class pigment (the trade name PD-320 of Yamamoto Chemicals Co., Ltd's manufacture: in wavelength
595nm has maximum absorption wavelength) 0.25 part, in addition to this, the polarizing coating with adhesive phase is made similarly to Example 1,
Further use the polarization film production with the adhesive phase liquid crystal display panel of IPS mode.
Embodiment 2
Solid component 100 when preparing the adhesive composition of comparative example 1, relative to acrylic polymer solution
Part, further cooperate tetraazatetradecane porphyrin class pigment (the trade name FDG-007 of hillside plot chemical industry Co., Ltd. manufacture: in wave
Long 595nm has maximum absorption wavelength) 0.5 part, in addition to this, the polarizing coating with adhesive phase is made similarly to Example 1,
Further use the polarization film production with the adhesive phase liquid crystal display panel of IPS mode.
Comparative example 2
Solid component 100 when preparing the adhesive composition of embodiment 1, relative to acrylic polymer solution
Part, further cooperate cyanines class pigment (the trade name FDB-008 of hillside plot Chemical Co., Ltd. manufacture: to have most in wavelength 495nm
Big absorbing wavelength) 0.25 part, in addition to this, the polarizing coating with adhesive phase is made similarly to Example 1, further uses this
Polarization film production with the adhesive phase liquid crystal display panel of IPS mode.
With reference to comparative example 1
(polarizing coating with phase difference film)
It is further viscous by polyvinyl alcohol after having made slim polarizing coating in the polarizing coating of comparison example 1
Agent is connect by 40 μm of thickness of phase difference film (the ZEONOA film of Zeon Corp's manufacture, front phase difference 52nm, thickness phase
Potential difference 125nm) be pasted on slim polarizing coating be polarized mirror surface, made the polarizing coating with phase difference film.
(production of the polarizing coating with adhesive phase)
Then, using adhesive composition identical with comparative example 1, with the inclined of phase difference film in the same manner as comparative example 1
The phase difference film side of vibrating diaphragm forms adhesive phase, has made (with phase difference film) polarizing coating with adhesive phase.
(production of the liquid crystal display panel of VA mode)
Liquid crystal display panel (the liquid comprising VA mode is taken out from the LCD TV (UN48JU6350F) that Samsung company manufactures
The liquid crystal display panel of brilliant unit), the polarizing coating with adhesive phase of visible side is further removed from liquid crystal cells.By diaphragm from
After being removed on the adhesive phase of (with phase difference film) polarizing coating with adhesive phase of above-mentioned production, by this with adhesive phase
The adhesive phase of (with phase difference film) polarizing coating is pasted on the liquid crystal cells after having removed the above-mentioned polarizing coating with adhesive phase
Part, made the liquid crystal display panel of VA mode.
With reference to comparative example 2
In reference comparative example 1, as adhesive composition, the solid relative to acrylic polymer solution has been used
100 parts of ingredient are further combined with porphyrin pigment (the trade name PD-320 of Yamamoto Chemicals Co., Ltd's manufacture: in wavelength
595nm has maximum absorption wavelength) 0.25 part of composition, in addition to this, the production band adhesive in the same manner as reference comparative example 1
(with phase difference film) polarizing coating of layer, further uses (with phase difference film) the polarization film production with adhesive phase VA
The liquid crystal display panel of mode.
Adhesive phase obtained in above-described embodiment and comparative example (including comparison reference example), liquid crystal display panel are carried out
Evaluation below.Show the results of the evaluation table 1.
(measurement of the mist degree (internal haze) of adhesive phase)
Adhesive composition used in each example is uniformly applied to total light transmittance 93.3%, mist degree with applicator
Then the one side of 0.1% alkali-free glass is dried 2 minutes in 155 DEG C of air circulating type constant temperature oven to carry out, is passed through
Haze meter (color technical research institute manufactures in village, MH-150), determines the material for the adhesive phase for being formed with 20 μm of thickness
Mist degree.When being measured using haze meter, configured in a manner of making adhesive phase side become light source side.For haze value
Speech, since the haze value of alkali-free glass is 0.1%, value obtained from measured value is subtracted 0.1% is as haze value.
(measurement of the contrast of liquid crystal display panel)
After the liquid crystal display panel made in each example to be back to initial LCD TV, in darkroom, color luminance meter is used
The SR-UL1 of manufacture (Topcon Technohouse company) determines LCD TV in black display and when white displays
Front face brightness.Contrast has been found out according to (brightness when brightness/black display when white displays).Be also shown in table 1 by
The contrast of the case where having used the adhesive phase without pigment (comparative example 1, with reference to comparative example 1) is set as pair when 100%
Than degree index (%).
(measurement of the reflectivity of liquid crystal display panel)
For the liquid crystal display panel made in each example, the trade name " CM- manufactured using Konica U.S. Danone Co., Ltd.
2600d " is determined in the way of (SCI) comprising positive reflection by D65 light source.Measuring temperature is set as 23 DEG C.It will repeat secondary
The average value that number is 2 times is as measured value.
Claims (7)
1. a kind of liquid crystal display panel, includes
The liquid crystal cells of IPS mode,
The 1st optical functional layer configured in order from the visible side of the liquid crystal cells and the 1st polarizing coating and
The 2nd optical functional layer configured in order from the back side of the liquid crystal cells and the 2nd polarizing coating,
In 1st optical functional layer and the 2nd optical functional layer at least any one optical functional layer contains pigment and mist degree is
0.2~2% range.
2. liquid crystal display panel according to claim 1, wherein at least the 1st optical functional layer contains pigment and mist degree is 0.2
~1.5% range.
3. liquid crystal display panel according to claim 1 or 2, wherein the mist degree of the optical functional layer containing pigment is 0.2
~2%.
4. liquid crystal display panel described in any one of claim 1 to 3, wherein the pigment wave-length coverage 470~
At least any wave-length coverage in 570~610nm of 510nm and wave-length coverage has maximum absorption wavelength.
5. liquid crystal display panel according to any one of claims 1 to 4, wherein the pigment is tetraazatetradecane porphyrin class pigment.
6. liquid crystal display panel according to any one of claims 1 to 5, wherein relative to the formation optical functional layer
100 parts by weight of base polymer of resin layer contain 0.01~5 parts by weight of pigment.
7. a kind of liquid crystal display device, it uses liquid crystal display panels according to any one of claims 1 to 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2017041846 | 2017-03-06 | ||
| JP2017-041846 | 2017-03-06 | ||
| PCT/JP2018/008366 WO2018164063A1 (en) | 2017-03-06 | 2018-03-05 | Liquid crystal panel and liquid crystal display device |
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| CN110268310A true CN110268310A (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201880011247.XA Pending CN110268310A (en) | 2017-03-06 | 2018-03-05 | Liquid crystal display panel and liquid crystal display device |
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|---|---|
| JP (1) | JPWO2018164063A1 (en) |
| KR (1) | KR102533838B1 (en) |
| CN (1) | CN110268310A (en) |
| TW (1) | TWI763791B (en) |
| WO (1) | WO2018164063A1 (en) |
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| JP2021105706A (en) * | 2019-12-26 | 2021-07-26 | 日東電工株式会社 | Polarizer protective film, polarizing plate, and image display device |
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| KR101802562B1 (en) * | 2014-08-29 | 2017-11-29 | 삼성에스디아이 주식회사 | Polarizing plate, composition for protective layer of the same and optical display apparatus comprising the same |
| KR101663280B1 (en) * | 2014-10-06 | 2016-10-06 | 에스케이씨하스디스플레이필름(유) | Color gamut enhancing film for liquid crystal display and liquid crystal display comprising same |
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2018
- 2018-03-05 JP JP2019504580A patent/JPWO2018164063A1/en active Pending
- 2018-03-05 CN CN201880011247.XA patent/CN110268310A/en active Pending
- 2018-03-05 WO PCT/JP2018/008366 patent/WO2018164063A1/en active Application Filing
- 2018-03-05 KR KR1020197018458A patent/KR102533838B1/en active IP Right Grant
- 2018-03-06 TW TW107107429A patent/TWI763791B/en active
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| CN101055325A (en) * | 2006-04-14 | 2007-10-17 | 索尼株式会社 | Optical sheet, back-light device and liquid crystal display device |
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| TWI763791B (en) | 2022-05-11 |
| KR20190124699A (en) | 2019-11-05 |
| KR102533838B1 (en) | 2023-05-18 |
| JPWO2018164063A1 (en) | 2019-11-07 |
| TW201837506A (en) | 2018-10-16 |
| WO2018164063A1 (en) | 2018-09-13 |
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