CN105700055B - polarizer - Google Patents
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- CN105700055B CN105700055B CN201510883567.2A CN201510883567A CN105700055B CN 105700055 B CN105700055 B CN 105700055B CN 201510883567 A CN201510883567 A CN 201510883567A CN 105700055 B CN105700055 B CN 105700055B
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- film
- protective film
- adhesive layer
- aforementioned
- polarizer
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Liquid Crystal (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to polarizers.The present invention relates to a kind of polarizers and the image display device for having it; the polarizer have polarizing film, aforementioned polarizing film at least one side formed adhesive layer and aforementioned adhesive layer top formed at least one layer of protective film, aforementioned adhesive layer and protective film meet mathematical expression 1：Elasticity modulus-protective film elasticity modulus │ of 1000MPa >=│ adhesive layer, thus to the excellent in te pins of durability of thermal shock, even if internal polarizer will not be cracked under the harsh conditions of high temperature.
Description
Technical field
The present invention relates to polarizers.
Background technique
In liquid crystal display device (LCD), electroluminescent (EL) display device, plasm display device (PDP), Flied emission
Polarizer used in the various image display devices of display device (FED), OLED or the like is normally contained in polyethenol series
(polyvinyl alcohol；PVA iodine based compound or dichroism polarisation substance) is made to have carried out the polarization of gas absorption quantity on film
Piece has following multilayered structure：Polarizer protection film is stacked gradually by bonding agent in the one side of polarizing film, in polarizing film
Another side stack gradually polarizer protection film, the adhesive phase engaged with liquid crystal cells, mould release film.
In recent years, various image display devices are gradually enlarged, and the polarizing film and polarizer thus used is also enlarged.Cause
This, in the treatment process in process, processing become more difficult, in use under high temperature and low temperature environment repeatedly and generate
Deflection further increases, it is desirable that the polarizer of excellent in te pins of durability.
More specifically, polarizing film and protective film are engaged by adhesive layer between them, at this point, partially
When the adaptation difference between piece and protective film of shaking, treatment process in process or the middle possibility for existing and being deformed is used
Property, when exposing for a long time under the high temperature conditions, internal polarizer may be cracked.
Light-cured type adhesive composite is described in KR published patent 2011-88973 bulletin and uses its shape
At polarizer, but unresolved problem point.
Existing technical literature
Patent document
Patent document 1：KR published patent 2011-88973 bulletin
Summary of the invention
Problems to be solved by the invention
The purpose of the present invention is to provide the polarizers of the excellent in te pins of durability to thermal shock.
In addition, another object of the present invention is to provide the image display devices for having aforementioned polarizer.
The solution to the problem
1. a kind of polarizer, have polarizing film, protective film and between aforementioned polarizing film and aforementioned protective film it
Between adhesive layer, aforementioned adhesive layer and protective film meet following mathematical expressions 1.
Mathematical expression 1：
Elasticity modulus-protective film elasticity modulus │ of 1000MPa >=│ adhesive layer
2. according to polarizer described in aforementioned project 1, wherein the elasticity modulus of aforementioned adhesive layer has thin greater than protecting
The value of the elasticity modulus of film.
3. according to polarizer described in aforementioned project 1, wherein aforementioned adhesive layer with a thickness of 0.1~10 μm.
4. according to polarizer described in aforementioned project 1, wherein aforementioned protective film with a thickness of 30~100 μm.
5. according to polarizer described in aforementioned project 1, wherein the thickness of aforementioned adhesive layer and protective film ratio is 1:3
~1000.
6. according to polarizer described in aforementioned project 1, wherein aforementioned adhesive layer is by Photocurable adhesive agent composition shape
At.
7. according to polarizer described in aforementioned project 6, wherein aforementioned Photocurable adhesive agent composition includes optical polymerism
Compound, Photoepolymerizationinitiater initiater and crosslinking agent.
8. according to polarizer described in aforementioned project 1, wherein aforementioned protective film is by selected from thin by acrylic resin
At least one of the group of film, cellulosic resin film, polyolefin resin film and polyester resin film composition shape
At.
9. a kind of image display device has polarizer described in any one of aforementioned project 1~8.
The effect of invention
Polarizer of the invention between protective film and adhesive layer by maintaining elasticity modulus appropriate, thus to heat
The excellent in te pins of durability of impact.
Even if in addition, polarizer of the invention, under the harsh conditions of high temperature, internal polarizer does not also crack.
Specific embodiment
The present invention relates to polarizer and the image display device for having it, the polarizer have polarizing film, protective film,
And the adhesive layer between aforementioned polarizing film and aforementioned protective film, aforementioned adhesive layer and protective film meet mathematics
Formula 1 does not crack the internal polarizer under the harsh conditions of high temperature thus to the excellent in te pins of durability of thermal shock.
Hereinafter, the present invention will be described in detail.
Polarizer of the invention have polarizing film, protective film and between aforementioned polarizing film and aforementioned protective film it
Between adhesive layer, aforementioned adhesive layer and protective film meet following mathematical expressions 1.
Mathematical expression 1：
Elasticity modulus-protective film elasticity modulus │ of 1000MPa >=│ adhesive layer
In the present invention, " elasticity modulus " means tensile modulus of elasticity.
Under conditions of high temperature, polarizing film is shunk, protective film and the bonding agent between polarizing film and protective film
Layer expansion.That is, the case where variation of polarizing film, adhesive layer and protective film is entirely different, the crackle of polarizing film can be generated, broken
The problems such as splitting.Herein, polarizer of the invention is by making the elasticity modulus of adhesive layer and protective film meet aforementioned mathematical formula 1
Range, to make the stress minimum limit between adhesive layer and protective film, adjusting will affect answering for lower polarizing sheet
Power variation, thus, it is possible to improve the durability to thermal shock of polarizer.
When mathematical expression 1 of the invention is more than 1000MPa, crackle or the fracture of polarizing film are generated, durability is significantly reduced.
Aforementioned mathematical formula 1 is preferably 900MPa hereinafter, more preferably 600MPa or less.When meeting aforementioned range, it can determine whether to make stress
Minimum limit further increases the durability of thermal shock.
The parameter of aforementioned mathematical formula 1 can by by the thickness of adhesive layer and protective film, material, coating fluid it is viscous
Degree, condition of manufacturing process etc. are adjusted to range appropriate and determine.
Polarizing film
Polarizing film of the invention is to be manufactured, by usual way in the field in the polyvinyl alcohol resin of drawn
Dichroism pigment is set to have carried out the polarizing film of gas absorption quantity on film.
The polyvinyl alcohol resin for constituting polarizing film is obtained by by the saponification of polyvinyl acetate system resin.As poly-vinegar acid
Vinylite can also enumerate vinylacetate other than as the polyvinyl acetate of the homopolymer of vinylacetate
With the copolymer etc. for the other monomers that can be copolymerized with it.As can be enumerated with vinyl acetate copolymerized other monomers
Unsaturated carboxylic acid class, unsaturated sulfonic acid class, olefines, vinyl ethers, acrylamide monomers with ammonium etc. out.Separately
Outside, polyvinyl alcohol resin can be modified substance, and the polyvinyl formal being for example modified by aldehydes also can be used
Or Pioloform, polyvinyl acetal etc..The saponification degree of polyvinyl alcohol resin be usually the % of 85~100 moles of %, preferably 98 moles the above are
It is good.In addition, the degree of polymerization of polyvinyl alcohol resin is usually 1000~10000, preferably 1500~5000 to be preferred.
Such polyvinyl alcohol resin is formed as into the reel film that product obtained from film is used as polarizing film.To poly-
There is no particular limitation for the film forming method of vinyl alcohol resin, and well known method can be used.To the film thickness of reel film
There is no particular limitation, such as can be 10~150 μm.
Polarizing film of the invention is manufactured by following process：Continuously polyvinyl alcohol film is carried out on aqueous solution single
Process that axis stretches, the process for carrying out process that dyeing adsorbs it with dichroism pigment, being handled with boric acid aqueous solution and
Washing, dry process.
The process being uniaxially stretched to polyvinyl alcohol film simultaneously or can dyed before dyeing, with dyeing
After carry out.It is uniaxially stretched when carrying out after dyeing, can be carried out before boric acid processing, can also be carried out in boric acid processing.
It is of course also possible to be uniaxially stretched in these multiple stages.For being uniaxially stretched, the different roller of peripheral speed can be used
Or column roller.It can be the dry type stretching stretched in an atmosphere in addition, being uniaxially stretched, be also possible to make its swelling in a solvent
In the state of the wet tensile that is stretched.Draw ratio is usually 4~8 times.
The polyvinyl alcohol film of drawn can be used for example with the process that dichroism pigment dyes by poly- second
The thin film dipped method in the aqueous solution containing dichroism pigment of enol system.As dichroism pigment, iodine or two can be used
Color dyestuff.It is further preferred, that polyvinyl alcohol film is pre-soaked before dyeing to make its swelling in water.
It usually can be used and polyvinyl alcohol film be immersed in containing iodine and iodine when using iodine as dichroism pigment
Change the dyeing method dyed in aqueous solution of potassium.In general, the content of the iodine in dyeing aqueous solution is relative to water (distillation
Water) 100 parts by weight are 0.01~1 parts by weight, the content of potassium iodide is 0.5~20 parts by weight relative to 100 parts by weight of water.Dyeing
It is usually 20~40 DEG C with the temperature of aqueous solution, dip time (dyeing time) is usually 20~1800 seconds.
As dichroism pigment, when using dichroic dye, generallys use and wrapping polyvinyl alcohol resin is thin film dipped
The method dyed in the aqueous solution of containing water-soluble dichroic dye.About the content of the dichroic dye in the aqueous solution,
Every 100 parts by weight water is usually 1 × 10-4~10 parts by weight, preferably 1 × 10-3~1 parts by weight.The aqueous solution can also contain
The inorganic salts such as sodium sulphate are as dyeing assistant.The temperature for dyeing the aqueous dye solutions used is usually 20~80 DEG C, in addition, to this
The dip time of aqueous solution is usually 10~1800 seconds.
The process that polyvinyl alcohol film through dyeing is carried out boric acid processing can be by being immersed in the water containing boric acid
It is carried out in solution.In general, the content of the boric acid in the aqueous solution containing boric acid is 2~15 weight relative to 100 parts by weight of water
Part, preferably 5~12 parts by weight are preferred.As dichroism pigment, when using iodine, the aqueous solution containing boric acid preferably comprises iodate
Potassium, the content are that 0.1~15 parts by weight, preferably 5~12 parts by weight are preferred usually relative to 100 parts by weight of water.Contain boric acid
The temperature of aqueous solution is usually 50 DEG C or more, preferably 50~85 DEG C, more preferable 60~80 DEG C and is preferred, and dip time is usually 60
~1200 seconds, preferably 150~600 seconds, more preferably 200~400 seconds.
Usually to boric acid, treated that polyvinyl alcohol film is washed and dried.Washing process can be by will be through boron
The polyvinyl alcohol film dipping of acid processing carries out in water.The temperature of the water of washing process is usually 5~40 DEG C, when dipping
Between be usually 1~120 second.Pass through dry available polarizing film after washing.It is dried and hot-air drier usually can be used
Or far infra-red heater carries out.Being dried temperature is usually 30~100 DEG C, and preferably 50~80 DEG C, drying time is logical
It is often 60~600 seconds, preferably 120~600 seconds.
To the thickness of polarizing film of the invention, there is no particular limitation, such as can be 5~40 μm.
Adhesive layer
As long as adhesive layer of the invention, which is formed in at least one side of aforementioned polarizing film and plays, makes protective film and polarization
The effect of piece bonding, and meets the value of aforementioned mathematical formula 1, so that it may be not particularly limited using.
Adhesive layer of the invention can show the elasticity modulus of 500~5000MPa, in order to obtain the raising of process
With desired thickness, preferred display goes out the elasticity modulus of 1000~3500MPa.
Adhesive layer of the invention can be formed by Photocurable adhesive agent composition, aforementioned Photocurable adhesive agent combination
Object may include photopolymerizable compound, Photoepolymerizationinitiater initiater and crosslinking agent.
To photopolymerizable compound used in Photocurable adhesive agent composition of the invention, there is no particular limitation, example
It can such as enumerate：Polyester acrylate, urethane acrylate, polybutadiene acrylic acid ester, organic silicon acrylic ester, epoxy third
The acrylic monomers such as olefin(e) acid ester；The epoxies such as hydrogenated epoxy class monomer, ester ring type epoxy monomer, aliphatic epoxy class monomer
Monomer etc..They can be used alone or are mixed with two or more.
In addition, the degree of polymerization that the degree of polymerization 2~20 or so can be used is relatively low as photopolymerizable compound of the invention
State oligomer.Oligomer can be the oligomer of aforementioned monomer.They can be used in mixed way with aforementioned monomer.
Crosslinking agent plays the reactive function of improving polarizer adhesive composite of the invention, to aforementioned crosslinking agent
Type there is no particular limitation, specific trade name that the present invention can be used, commercially available crosslinking agent, such as can enumerate
Out：The Octavinyl POSS OL1170 of Hybrid Corporation, Core Corporation A-HD-N, A-NOD,
A-DOD、A-NPG、A-200、A-400、A-600、APG-100、APG-400、APG-700、A-DCP、A-DOG、A-TMM、A-
TMMT, A-DPH, A-TMPT etc., they can be used alone or mix using two or more.
Polymerization initiator is used to improve the efficiency of curing reaction, as polymerization initiator, aforementioned photocurable compound packet
Radical polymerization initiator can be used in when containing acrylic monomer, and when including epoxy monomer, cationic polymerization can be used
Initiator.
To radical polymerization initiator, there is no particular limitation, such as can enumerate：Acetophenones, benzophenone, thiophene
Xanthones, benzoin class, benzoin alkyl ethers etc..They can be used alone or are mixed with two or more.
In addition, the Ciba Specialty as commercially available product can be enumerated as radical polymerization initiator
The darocur 1173 of Chemicals Corporation, darocur 4265, darocur BP, darocur TPO,
darocur MBF、irgacure 184、irgacure 500、irgacure 2959、irgacure 754、irgacure
651、irgacure 369、irgacure 907、irgacure 1300、irgacure 819、irgacure 2022、
Irgacure 819DW, 2100 irgacure, irgacure 784, irgacure 250 etc..They can be used alone or
It is mixed with two or more.
To cationic polymerization initiators, there is no particular limitation, such as can enumerate：Aromatic diazo salt, aromatic series halogen
Salt, aromatic matte salt etc..They can be used alone or are mixed with two or more.
In addition, as light cationic polymerization initiator, can enumerate the OPTOMER-SP-151 as commercially available product,
OPTOMER-SP-170, OPTOMER-SP-171 (Asahi Denka Kogyo K. K), Irgacure-261 (Ciba Specialty
Chemicals Corporation)、SanAid SI-60L、UVI-6990(Union Carbide Corporation)、BBI-
1C3、MPI-103、TPS-103、DTS-103、NAT-103、NDS-103(Midori Kagaku Co.,Ltd.)、CPI-110A
(San-Apro Ltd.) etc..They can be used alone or are mixed with two or more.
The Photocurable adhesive agent composition of adhesive layer of the invention is used to form other than aforesaid ingredients, according to need
It wants include additive.To the type of additive, there is no particular limitation, such as can enumerate：Increase and decrease agent, silane coupled
Agent, adhesion promoters, levelling agent, ultraviolet absorbing agent, age resister, dyestuff, processing aid, ion trap agent, antioxidant,
Tackifier, filler, plasticizer, frothing inhibitor, antistatic agent, aromatic, surfactant etc..They can be used alone
Or it is mixed with two or more.
To be coated with adhesive composite of the invention and the thickness of adhesive layer that is formed there is no particular limitation, usually
0.1~10 μm, preferably 1~5 μm is preferred.When the thickness of adhesive layer meets aforementioned range, suitable elasticity modulus can be maintained,
Meet aforementioned mathematical formula 1, when engagement, which will not lead to the problem of, is mixed into bubble.
In addition, to improve cementability, can also be by dry types such as prime treatment, corona treatment, sided corona treatments at
Reason, the chemical treatment such as saponification (alkali) processing implement surface treatment to the surface suitable of polarizing film and/or protective film.As saponification
(alkali) processing, can enumerate the method being immersed in the aqueous solution of the alkali such as sodium hydroxide, potassium hydroxide.
Protective film
As long as protective film of the invention is by adhesive layer and polarizes chip bonding and meets the value of aforementioned mathematical formula 1,
Just there is no particular limitation, the excellent protection such as preferably clear, mechanical strength, thermal stability, moisture shielding, isotropism
Film.
Protective film of the invention can show the elasticity modulus of 500~5000MPa, process improve side,
In order to be effectively prevented deformation and fracture caused by tension, preferred display goes out the elasticity modulus of 1000~3000MPa.
As the specific example of protective film of the invention, can be used comprising selected from by acrylic resin film,
It is at least one kind of various in the group of cellulosic resin film, polyolefin resin film and polyester resin film composition
Transparent resin film.
As the specific example of aforementioned protective film, can enumerate：Poly- (methyl) methyl acrylate, poly- (methyl) propylene
The acrylic resins film such as acetoacetic ester；Polyethylene terephthalate, polyethylene glycol isophthalate, poly- naphthalenedicarboxylic acid
The polyester resin films such as glycol ester, polybutylene terephthalate (PBT)；Diacetyl cellulose, tri acetyl cellulose etc.
Cellulosic resin film；Polyethylene, polypropylene, ring class or the polyolefins with norbornene structure, ethylene-propylene copolymer
The polyolefin resin films such as object；Deng but not limited to this.
To the thickness of aforementioned protective film, there is no particular limitation, is preferred for 30~100 μm, preferably 40~80 μm.Protection
When the thickness of film meets aforementioned range, elasticity modulus appropriate can be maintained.
In addition, to the thickness ratio of aforementioned adhesive layer and protective film, there is no particular limitation, such as adhesive layer：Protection
Film is 1:3~1000, preferably 1:8~80.When the thickness of protective film and adhesive layer ratio meets aforementioned range, Ke Yiwei
Hold elasticity modulus appropriate.
It can also be suitable for implementing at hard painting as needed for the single side in the polarizing film for engaging protective film on one side
Reason, antireflection process, release treatment, by non-proliferation or it is anti-dazzle for the purpose of the surface treatment such as processing.
In addition, for the single side in the polarizing film for engaging protective film on one side, other than surface treatment above-mentioned, root
According to the surface-treated layer for needing to be laminated hard conating, anti-reflection layer, antiglare layer, antistatic layer etc., bonding can also be passed through
Optically functional film is further laminated in oxidant layer.
To the type of aforementioned optical functional film, there is no particular limitation, such as can enumerate：Make liquid in substrate surface
The optical compensating film that crystalline compound or its high-molecular compound etc. are orientated makes certain polarisation light be transmitted, be made
The reflection-type polarizing separating film that the polarisation light of opposite to that property is reflected, the phase difference comprising polycarbonate resin are thin
Film, the phase-contrast film comprising cyclic polyolefin hydrocarbon resins, surface have concavo-convex anti-dazzle function additional film, prevent through surface
Additional film of processing is reflected, surface has the reflective film of reflection function, has the half of reflection function and transmission function simultaneously
Transflecting film etc..
Polarizer of the invention has polarizing film, protective film and between aforementioned polarizing film and aforementioned protective film
Adhesive layer meets aforementioned mathematical formula 1, and thus protective film and adhesive layer maintain suitable elasticity modulus, can show pair
The excellent durability of thermal shock.
Polarizer of the invention is generally applicable to image display device.
Hereinafter, showing suitable embodiment to be readily appreciated that the present invention, but these embodiments are only to the present invention
It is illustrated, does not limit the range of the attached claims, it can be right in the range of scope of the invention and technical idea
Embodiment numerous variations and can be modified, this be to those skilled in the art it is specific, certainly, such change
More belong to the range of the attached claims with amendment.
Production Example 1：The manufacture of polarizing film
By saponification degree be 99.9% or more transparent non-stretched polyvinyl alcohol film (VF-PS, KURARAY CO.,
LTD.) dipping 2 minutes are including 2 weight of iodine 3.5mmol/L and potassium iodide after being swollen it in 30 DEG C of water (deionized water)
30 DEG C of dyeing for measuring % is dyed with impregnating 4 minutes in aqueous solution.At this point, swelling and dyeing phase respectively with 1.3 times,
1.4 times of draw ratio is stretched, and is stretched in such a way that the accumulation draw ratio until staining trough is 1.82 times.It connects
, (the 1st crosslinking in 30 seconds is impregnated in 50 DEG C of the crosslinking aqueous solution comprising 10 weight % of potassium iodide, 3.7 weight % of boric acid
Stage) it is crosslinked, it is stretched with 2 times of draw ratio.Later, including 10 weight % of potassium iodide, boric acid 3.7 weight %
50 DEG C of crosslinking is crosslinked with impregnating 20 seconds (the 2nd cross-linking stage) in aqueous solution, is stretched with 1.5 times of draw ratio
(the accumulation draw ratio of the 1st and the 2nd cross-linking stage is 3 times).
At this point, making 5.46 times of total accumulation draw ratio of swelling, dyeing and cross-linking stage.After crosslinking, make polyethylene
Alcohol film is 4 minutes dry in 70 DEG C of baking oven, manufactures polarizing film.
Production Example 2：The manufacture of polarizer
To the face implementation Corona discharge Treatment with polarization chip bonding for the protective film that table 1 is recorded.
Later, it on the face for implementing Corona discharge Treatment of aforementioned protective film, is applied using bar coater with 3 μm of thickness
Cloth has the content of following table 1 and the adhesive composite of composition, and aforementioned polarizing film is laminated on it, thereafter, uses same guarantor
Film and bonding agent are protected, protective film is laminated in the single side of polarizing film.
Then, to aforementioned laminated body, using be provided with belt conveyor ultraviolet lamp (Fusion H bulb,
Fusion Corporation), UVA benchmark accumulated light 3000mJ/cm is irradiated from a surface2Ultraviolet light, make polarizing film
It is engaged with protective film, thus manufactures polarizer.
The composition of protective film and Photocurable adhesive agent composition that each embodiment and comparative example use is shown in following tables
1。
Table 1
(1) Evaluation of Heat Tolerance
By the polarizer of aforementioned manufacture 80 DEG C at a temperature of stand 500 hours after, see whether to generate bubble or removing
And it is evaluated.It is evaluated after aforementioned heat treatment, after placing 24 hours at normal temperature before will evaluating.
< evaluation criteria >
◎：Bubble-free or removing
○：Bubble or removing are generated in non-inspection area (1mm)
△：In non-inspection area (1mm), the whole face (4 face) of polarizer generates bubble or removing
×：Bubble or removing are generated other than non-inspection area (1mm)
(2) thermal shock test is evaluated
The polarizer of aforementioned manufacture is carried out 50 by the method being repeated under -30 DEG C, 80 DEG C (each 30 points) to follow
The thermal shock test of ring and 100 circulations.
< evaluation criteria >
◎：The generation of flawless
○：100ea subtle crackle below is generated in non-inspection area (1mm)
△：The subtle crackle of 100ea or more is generated in non-inspection area (1mm)
X：Generate the crackle of 1mm or more
Table 2
By aforementioned table 2 it is found that the value of mathematical expression 1 meet 1000MPa polarizer of the invention below not only show it is excellent
Different heat resistance, and it is also very excellent to confirm thermal shock evaluation.
Corresponding thereto, for be detached from mathematical expression 1 value comparative example when, due to the stress between protective film and adhesive layer
Difference, heat resistance significantly reduce, and crackle is easy to produce under thermal shock conditions, and confirmation can incur the bad of instrument.
Claims (7)
1. a kind of polarizer has polarizing film, protective film and between the polarizing film and the protective film
Adhesive layer, the adhesive layer and protective film meet following mathematical expressions 1, and the tensile modulus of elasticity tool of the adhesive layer
There is the value of the tensile modulus of elasticity greater than protective film,
Mathematical expression 1：
Tensile modulus of elasticity-protective film tensile modulus of elasticity │ of 1000MPa >=│ adhesive layer.
2. polarizer according to claim 1, wherein the adhesive layer with a thickness of 0.1~10 μm.
3. polarizer according to claim 1, wherein the protective film with a thickness of 30~100 μm.
4. polarizer according to claim 1, wherein the adhesive layer is formed by Photocurable adhesive agent composition.
5. polarizer according to claim 4, wherein the Photocurable adhesive agent composition includes optical polymerism chemical combination
Object, Photoepolymerizationinitiater initiater and crosslinking agent.
6. polarizer according to claim 1, wherein the protective film is by selected from by acrylic resin film, fibre
At least one of plain based resin film, polyolefin resin film and group of polyester resin film composition is tieed up to be formed.
7. a kind of image display device has polarizer according to any one of claims 1 to 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0178370 | 2014-12-11 | ||
| KR1020140178370A KR101745989B1 (en) | 2014-12-11 | 2014-12-11 | Polarizing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105700055A CN105700055A (en) | 2016-06-22 |
| CN105700055B true CN105700055B (en) | 2018-11-23 |
Family
ID=56141776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510883567.2A Active CN105700055B (en) | 2014-12-11 | 2015-12-04 | polarizer |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2016114938A (en) |
| KR (1) | KR101745989B1 (en) |
| CN (1) | CN105700055B (en) |
| TW (1) | TWI673522B (en) |
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| WO2018025717A1 (en) * | 2016-08-03 | 2018-02-08 | 住友化学株式会社 | Laminate film |
| JP6802361B2 (en) * | 2017-03-30 | 2020-12-16 | 富士フイルム株式会社 | Optical film and front plate of image display device having it, image display device, mirror with image display function, resistive touch panel and capacitive touch panel |
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| WO2014054114A1 (en) * | 2012-10-02 | 2014-04-10 | 日東電工株式会社 | Protection film and polarization plate provided with protection film |
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| JP4131289B1 (en) * | 2006-07-12 | 2008-08-13 | Ｊｓｒ株式会社 | Retardation film, use thereof and production method |
| JP6077751B2 (en) * | 2011-03-31 | 2017-02-08 | 住友化学株式会社 | Polarizer |
| JP6090868B2 (en) * | 2011-08-19 | 2017-03-08 | エルジー・ケム・リミテッド | Polarizer |
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| JP2007304317A (en) * | 2006-05-11 | 2007-11-22 | Nitto Denko Corp | Surface protective film for polarizing plate, polarizing plate protected by surface protective film and image display device |
| CN101344608A (en) * | 2007-07-12 | 2009-01-14 | 住友化学株式会社 | Polarization plate and optical component |
| CN101978295A (en) * | 2008-05-27 | 2011-02-16 | 日东电工株式会社 | Adhesive polarization plate, image display and methods for manufacturing adhesive polarization plate and image display |
| KR101293887B1 (en) * | 2010-01-29 | 2013-08-06 | 주식회사 엘지화학 | Photocurable adhesive compositon |
| CN103858158A (en) * | 2011-10-14 | 2014-06-11 | 日东电工株式会社 | Image display device unit having adhesive layer and image display device that uses said unit |
| WO2014054114A1 (en) * | 2012-10-02 | 2014-04-10 | 日東電工株式会社 | Protection film and polarization plate provided with protection film |
Also Published As
| Publication number | Publication date |
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| CN105700055A (en) | 2016-06-22 |
| KR20160071089A (en) | 2016-06-21 |
| TW201621359A (en) | 2016-06-16 |
| TWI673522B (en) | 2019-10-01 |
| JP2016114938A (en) | 2016-06-23 |
| KR101745989B1 (en) | 2017-06-27 |
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