CN106324741A - Polarizing plate, liquid crystal panel and liquid crystal display device - Google Patents
Polarizing plate, liquid crystal panel and liquid crystal display device Download PDFInfo
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- CN106324741A CN106324741A CN201610483674.0A CN201610483674A CN106324741A CN 106324741 A CN106324741 A CN 106324741A CN 201610483674 A CN201610483674 A CN 201610483674A CN 106324741 A CN106324741 A CN 106324741A
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- Prior art keywords
- polarizer
- film
- protecting film
- adhesive phase
- liquid crystal
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
Abstract
The invention relates to a polarizing plate, a liquid crystal panel and a liquid crystal display device. The invention provides a polarizing plate which is thin and of high brightness, the polarizer cannot be broken in case of repeated sharp temperature change, and warpage of a liquid crystal panel can be prevented in high-moisture conditions. In the polarizing plate, a first protection film is laminated on one surface of the polarizer, a first adhesive layer is provided at a side opposite to the surface where the polarizer is laminated of the first protection film, a second protection film is laminated on the other surface of the polarizer via a second adhesive layer, a third protection film is laminated on the surface opposite to an adhesive surface with the second adhesive layer of the second protection film via a third adhesive layer, and the adhesion force between the second protection film and the third adhesive layer is larger than 1.0N/25mm.
Description
Technical field
The present invention relates to Polarizer, liquid crystal panel and liquid crystal indicator.
Background technology
In recent years, from the standpoint of design, portability, the such mobile terminal of smart mobile phone
Large screen, slim (slim) change continuous rapid progress.In order to realize with limited thickness
Drive for a long time, high brightness, slimming are also expected for the Polarizer used.
Above-mentioned expect to tackle, it has been proposed that only by generally in the laminating of the two sides of polaroid
The protecting film formed by transparent resin is arranged on side, laminating brightness enhancement film is inclined further
Tabula rasa, Patent Document 1 discloses protecting film that a kind of sequentially stacking formed by transparent resin,
In polyvinyl alcohol film gas absorption quantity have the polaroid of iodine, pressure-sensitive adhesive layer, brightness enhancement film and
Slim and the Polarizer of high brightness become.
But, it is pushed further into during the filming of polaroid finding, above-mentioned slim and highlighted
In the Polarizer of the structure of degree, there is following such problem.
(1) when foreign body be mixed into protecting film surface, manufacture Polarizer time be mixed into foreign body and
When waiting and generation damages near the end on Polarizer surface because carrying out Polarizer processing, by
The problem causing polaroid to rupture in the variations in temperature happened over and over again drastically,
(2) in high humid and warm environment, big the asking of warpage of the liquid crystal panel that is fitted with Polarizer
Topic.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2010-039458 publication
Summary of the invention
Invent problem to be solved
The present invention completes in view of the above problems, it is an object of the invention to provide one
Slim and the Polarizer of high brightness, for described Polarizer, even if happening over and over again drastically
Variations in temperature, polaroid does not ruptures, even and if under high wet heat condition, liquid crystal surface
The warpage of plate is also suppressed.
For solving the means of problem
[1] Polarizer, wherein, is laminated with the first protecting film in the one side of polaroid,
First is had in the opposition side in the face being laminated with above-mentioned polaroid of above-mentioned first protecting film
Adhesive phase,
The another side of above-mentioned polaroid is laminated with the second protection via the second adhesive phase
Film,
The binding face with above-mentioned second adhesive phase of fitting at above-mentioned second protecting film is contrary
On the face of side, it is laminated with the 3rd protecting film via the 3rd adhesive phase,
Closing force between above-mentioned second protecting film and above-mentioned 3rd adhesive phase is
More than 1.0N/25mm.
[2] Polarizer as described in [1], wherein, the thickness of polaroid be 10 μm with
Under.
[3] Polarizer as described in [1] or [2], wherein, the thickness of the 3rd protecting film
Degree is 5～90 μm.
[4] Polarizer as according to any one of [1]～[3], wherein, temperature is
40 DEG C, relative humidity be the moisture permeability of the 3rd protecting film under conditions of 90% be 1000g/ (m2
24hr) below.
[5] Polarizer as according to any one of [1]～[4], wherein, 23～80 DEG C
Time the storage modulus (energy storage modulus) of the 3rd adhesive phase be 0.15～1.0
MPa。
[6] liquid crystal panel, it has the Polarizer according to any one of [1]～[5]
With liquid crystal cell (liquid crystal cell).
[7] liquid crystal panel, it sequentially has: according to any one of [1]～[5]
The thickness of Polarizer, liquid crystal cell and polaroid is the Polarizer of below 30 μm.
[8] liquid crystal indicator, it has the liquid crystal panel described in [6] or [7].
The effect of invention
Pass through the present invention, it is possible to provide a kind of slim and Polarizer of high brightness, for described partially
For tabula rasa, even if happening over and over again variations in temperature drastically, polaroid does not ruptures, and
Even if under high wet heat condition, the warpage of liquid crystal panel is also suppressed.
Accompanying drawing explanation
Fig. 1 is the skeleton diagram of an example of the Rotating fields of the Polarizer representing the present invention.
Fig. 2 is the skeleton diagram of an example of the Rotating fields of the Polarizer representing the present invention.
Fig. 3 is the top view of the position representing the amount of warpage measuring glass sample.
Description of reference numerals
1 polaroid
20 first protecting film
21 second protecting film
22 the 3rd protecting film
30 first adhesive phases
31 second adhesive phases
32 the 3rd adhesive phases
40 stripping films
100 Polarizers
101 Polarizers
50 points
60 Polarizers
70 glass plates
Detailed description of the invention
In the Polarizer of the present invention, the one side of polaroid is laminated with the first protecting film,
The opposition side in the face being laminated with above-mentioned polaroid of above-mentioned first protecting film has the first binding agent
Layer, is laminated with the second protecting film via the second adhesive phase on the another side of above-mentioned polaroid,
The binding face with above-mentioned second adhesive phase of fitting at above-mentioned second protecting film is opposition side
It is laminated with the 3rd protecting film via the 3rd adhesive phase on face.
Fig. 1 is the skeleton diagram of an example of the Rotating fields of the Polarizer representing the present invention.Fig. 1 institute
The Polarizer 100 shown is for being sequentially laminated with first adhesive phase the 30, first protecting film 20, partially
Mating plate the 1, second adhesive phase the 31, second protecting film 21, the 3rd adhesive phase 32 and
The Rotating fields of three protecting film 22.
Fig. 2 is the skeleton diagram of an example of the Rotating fields of the Polarizer representing the present invention.Fig. 2 institute
In the Polarizer 101 shown, be sequentially laminated with first adhesive phase the 30, first protecting film 20,
Polaroid the 1, second adhesive phase the 31, second protecting film 21, the 3rd adhesive phase 32,
Three protecting film 22, and stripping film 40.By stripping film 40 is fitted to the first binding agent
On layer 30, can be before Polarizer being fitted on liquid crystal cell via the first adhesive phase 30
Protect the surface of the first adhesive phase 30.When being conformed to liquid crystal cell, stripping film is peeled off.
As shown in Figures 1 and 2, the Polarizer of the present invention is only on the one side upper strata of polaroid
The slim Polarizer of folded protecting film.And, in the present invention, at the second protecting film away from partially
The farther side of mating plate has the 3rd protecting film.Think by making Polarizer at the second protecting film
The side farther away from polaroid there is the 3rd adhesive phase and the 3rd protecting film, even if thus
Happen over and over again variations in temperature drastically, it is possible to relax stress, prevent rupturing of polaroid, and
And, even if the warpage of liquid crystal panel the most also can be suppressed.
Generally, in order to protect the surface of Polarizer, usually stacked guard film is as Polarizer
Outermost layer.For protecting film, in order to Polarizer fitted on liquid crystal cell it
After peeled off, generally the closing force between the adhesive phase on Polarizer and protecting film is set
Relatively lowly fixed.The adhesive phase being had as common protecting film and the closing force of Polarizer,
It is 0.001～0.2N/25mm.The adhesive phase quilt being additionally, since on protecting film and protecting film
Peel off, thus finally will not be fitted in liquid crystal indicator.In the present invention, with liquid
The most not peeling off the 3rd adhesive phase and the 3rd protecting film after brilliant box laminating, Polarizer is kept intact
Be fitted in liquid crystal indicator.Therefore, in the Polarizer of the present invention, the second protection
Closing force between film and the 3rd adhesive phase is more than 1.0N/25mm.For above-mentioned closing force
Time, can be in the situation not making the second protecting film and the 3rd adhesive phase and the 3rd protecting film peel off
Under fit in liquid crystal indicator.
Hereinafter, the component of the Polarizer constituting the present invention is illustrated.
[polaroid]
Polaroid preferably has absorption and has the linear polarization of the vibration plane parallel with optical axis
Light, make the blooming with the light transmissive character of linear polarization of the vibration plane vertical with optical axis,
Specifically, gas absorption quantity in polyvinyl alcohol resin film can be enumerated and have dichromatic pigment (iodine
Or dichroic organic dye) polaroid.
The thickness of polaroid is usually below 25 μm, below preferably 15 μm, more preferably
Below 10 μm, below particularly preferably 8 μm.Especially, by making the thickness of polaroid become
Thin, thus the mechanical strength of polaroid self reduces, thus, the thickness at polaroid is 15 μm
Time following and then when being below 10 μm, the effect of the present invention can be obtained significantly.Generally,
The thickness of polaroid is more than 1 μm.It should be noted that applying in polyethenol series tree
When gas absorption quantity dichromatic pigment in lipid layer and the product that obtains are as polaroid, can be to individually
Polyvinyl alcohol resin stretch, it is possible to the solution of polyvinyl alcohol resin is being coated with
Above and jointly stretch with base material after carrying out being dried to base material etc., then remove base material.
As above-mentioned base material, polyethylene terephthalate film, Merlon can be enumerated
Film, tri acetyl cellulose membrane, norborene film, polyester film, polystyrene film, polypropylene
Film etc..
As the polyvinyl alcohol resin of composition polyvinyl alcohol resin layer, can use poly-second
The resin saponification of vinyl acetate system and the polyvinyl alcohol resin that obtains.As polyvinyl acetate
It is resin, in addition to the polyvinyl acetate as the homopolymer of vinyl acetate, also may be used
Enumerate vinyl acetate with can be with the copolymer of other monomers of its copolymerization.As can be with acetic acid
Other monomers of vinyl acetate copolymerization, can enumerate unsaturated carboxylic acid, alkene, vinyl ethers, no
Saturated sulfonic acid, there is the acrylamide etc. of ammonium.
The saponification degree of polyvinyl alcohol resin is usually 80 moles of more than %, preferably 90～
99.99 moles of %, more preferably 94～99.99 moles %.When saponification degree is less than 80 moles of %,
The resistance to water of the Polarizer obtained and humidity resistance reduce.When saponification degree is more than 99.99 moles of %,
Dyeing kinetics is slack-off, and productivity ratio reduces, and sometimes cannot obtain having sufficient polarity
The polaroid of energy.
Polyvinyl alcohol resin can be the modified polyvinylalcohol that a part is modified, such as,
Can use: utilize olefin-modified being modified based on ethylene and propylene etc. and the product that obtains；
Utilize based on acrylic acid, methacrylic acid and .beta.-methylacrylic acid etc. unsaturated carboxylic acid-modified change
Property and the product that obtains；The Arrcostab of unsaturated carboxylic acid, acrylamide etc. is utilized to be modified
And the product obtained.The modified ratio of polyvinyl alcohol resin is preferably shorter than 30 moles of %,
More preferably less than 10%.When being performed for more than 30 moles of % modified, exist and become to be difficult to adsorb
The tendency of dichromatic pigment, cannot obtain the polaroid with sufficient polarizing properties sometimes.
The average degree of polymerization of polyvinyl alcohol resin is preferably 100～about 10000, more preferably
It is 1500～8000, more preferably 2000～5000.
When average degree of polymerization is less than 100, there is the tendency being difficult to obtain preferable polarizing properties,
When average degree of polymerization is more than 10000, there is the dissolubility variation in solvent, polyvinyl alcohol
The formation of resin becomes the tendency of difficulty.
As polyvinyl alcohol resin, suitable commercially available product can be used.As the most commercially available
Product, all represent with trade name, can enumerate Co., Ltd. Kuraray " PVA124 " and
" PVA117 " (saponification degree is: 98～99 moles of %), " PVA624 " (saponification
95～96 moles of %), " PVA617 " (saponification degree: 94.5～95.5 moles of %) degree:；
(saponification degree is equal for " N-300 " and " NH-18 " of the Nippon Synthetic Chemical Industry Co., Ltd
For: 98～99 moles of %), " AH-22 " (saponification degree: 97.5～98.5 moles of %),
" AH-26 " (saponification degree: 97～98.8 moles of %)；Japan Vam&Poval Co.,Ltd.
" JC-33 " (saponification degree: 99 moles of more than %), " JF-17 ", " JF-17L " and
" JF-20 " (saponification degree is: 98～99 moles of %), " JM-26 " (saponification degree:
95.5～97.5 moles of %), " JM-33 " (saponification degree: 93.5～95.5 moles of %), " JP-45 "
(saponification degree: 86.5～89.5 moles of %) etc..
About in polaroid containing the dichromatic pigment of (gas absorption quantity), can enumerate iodine or
Dichroic organic dye etc..As dichroic organic dye, red (red) BR, red can be enumerated
LR, red R, pink (pink) LB, rubine (rubine) BL, purplish red (bordeaux)
GS, sky blue (sky blue) LG, lemon yellow (lemon yellow), blue (blue) BR,
Blue 2R, dark blue (navy) RY, green (green) LG, purple (violet) LB, purple B,
Black (black) H, black B, black GSP, Huang (yellow) 3G, yellow R, orange (orange)
LR, orange 3R, scarlet (scarlet) GL, scarlet KGL, Congo red (Congo Red),
Brilliant violet (brilliant violet) BK, super indigo plant (Supra Blue) G, super blue GL,
Super orange (Supra Orange) GL, direct sky blue (direct sky blue), the most strong
Orange (direct fast orange) S, fast black (fast black).Dichromatic pigment can be independent
Use a kind, it is possible to and use two or more.
[the first adhesive phase]
Formed in the first adhesive composition of the first adhesive phase, can use and exist all the time
Image display device or use in its blooming, to have cohesive and the transparency
The excellent adhesive composition that resin is main constituent.Can enumerate with acrylic acid series, rubber series,
The resin of carbamate system, ester system, polysiloxane series, polyvingl ether system etc. is main one-tenth
The adhesive composition divided.In these, with excellences such as the transparency, against weather, thermostabilitys
Acrylic resin based on the pressure adhesive of polymer (base polymer) be preferred
's.It is particularly preferred to select to use following adhesive composition, described adhesive composition
Keep the wettability of appropriateness, cohesive force, the most excellent with the cementability of the first protecting film, adding
The stripping problems such as tilting, peeling are not produced under conditions of heat, humidification.
As the acrylic resin for forming the first adhesive phase, (first can be used suitably
Base) butyl acrylate, (methyl) ethyl acrylate, (methyl) Isooctyl acrylate monomer,
(methyl) acrylic ester base polymer of (methyl) 2-EHA etc,
The copolymerization system base polymer employing above-mentioned (methyl) acrylate of more than two kinds and obtain
Thing.Additionally, copolymerizable polar monomer in these base polymers.As polar monomer, can
Enumerate (methyl) acrylic acid, (methyl) acrylic acid 2-hydroxy propyl ester, (methyl) propylene
Acid hydroxy methacrylate, (methyl) acrylamide, (methyl) acrylic acid N, N-dimethylamino
Base ethyl ester, (methyl) glycidyl acrylate etc there is carboxyl, hydroxyl, amide
The monomer of base, amino, epoxy radicals etc..It should be noted that in this specification, (methyl)
Acrylic acid represents acrylic or methacrylic acid, and other the term with (methyl) is also same
Sample.
Aforesaid propylene acid is that resin the most individually can be used as the first adhesive composition use,
But it is generally mated cross-linking agent.As cross-linking agent, formation carboxylic acid metal between carboxyl can be enumerated
The divalent of salt or polyvalent metal ion；And form the polyamine compounds of amido link between carboxyl；
And form the polyepoxides of ester bond, polyhydric alcohol between carboxyl；And form acyl between carboxyl
The polyisocyanate compound of amine key；Etc..Wherein, polyisocyanate compound is as having
Machine system cross-linking agent is widely used.
Can comprise as natural for forming the first adhesive composition of the first adhesive phase
Thing, the resin of synthetic, give the resin of cohesive, UV absorbent, antioxidant,
Antistatic agent, dyestuff, pigment, defoamer, anticorrosive, Photoepolymerizationinitiater initiater etc. are suitable
Additive.In addition, it is possible to form the first binding agent that display is light scattering containing microgranule
Layer.
First adhesive phase can be formed in accordance with the following methods: is dissolved by above-mentioned each composition or dispersion
In the organic solvent such as toluene, ethyl acetate, solid component concentration is adjusted to 10～40 weights
Measure about % and obtain adhesive composition, be applied on base material go forward side by side by this adhesive composition
Row is dried, thus is removed by organic solvent, is consequently formed.
The thickness of the first adhesive phase is usually 1～40 μm, preferably 3～25 μm.
When the thickness of the first adhesive phase is above-mentioned scope, not only can keep good processability,
And the change in size of Polarizer can be suppressed.It addition, the first adhesive phase is when 23～80 DEG C
Storage modulus be preferably 0.01～0.1MPa, more preferably 0.01～0.05MPa.
" show the storage modulus of 0.01～0.05MPa when 23～80 DEG C " to refer to, at this
In the range of any temperature under storage modulus value the most within the above range.Generally, along with
Temperature rises, and storage modulus is gradually reduced, therefore, if energy storage when 23 DEG C and 80 DEG C
Modulus each falls within above-mentioned scope, then can be considered at a temperature of this scope, adhesive phase show
Show the storage modulus of above-mentioned scope.The storage modulus of adhesive phase may utilize commercially available viscoelasticity
Determination of viscoelasticity device " the DYNAMIC of determinator such as REOMETRIC company
ANALYZER RDA II " measure.
[the second adhesive phase]
As forming the second adhesive composition of the second adhesive phase, can enumerate and above-mentioned
The compositions that one adhesive composition is same.For the second adhesive composition and the first bonding
For agent compositions, the content ratio of its composition and composition can be the same or different respectively.
The thickness of the second adhesive phase also as the thickness of the first adhesive phase, usually 1～
40 μm, preferably 3～25 μm, more preferably 3～10 μm.The thickness of the first adhesive phase
During for above-mentioned scope, not only can keep good processability, and the chi of Polarizer can be suppressed
Very little change.
Second adhesive phase storage modulus when 23～80 DEG C is preferably 0.10～1.0MPa,
More preferably 0.15～0.8MPa.Storage modulus when 23～80 DEG C is 0.10～1.0MPa
Time, the contractility of polaroid under hygrothermal environment can be relaxed, can more effectively reduce liquid crystal surface
The warpage of plate.As making the method that storage modulus is 0.10～1.0MPa of the second adhesive phase,
It is effective for coordinating urethane acrylate system oligomer in common adhesive composition
's.Preferably, after coordinating such urethane acrylate system oligomer, shine
Penetrating energy-ray and make it solidify, products therefrom will show high storage modulus.
[the 3rd adhesive phase]
As forming the 3rd adhesive composition of the 3rd adhesive phase, can enumerate and above-mentioned the
One, the compositions that the second adhesive composition is same.For the 3rd adhesive composition and
One, for the second adhesive composition, the content ratio of its composition and composition respectively can phase
Together can also be different.
The thickness of the 3rd adhesive phase also as the thickness of the first adhesive phase, usually 1～
40 μm, preferably 3～25 μm, more preferably 3～10 μm.The thickness of the 3rd adhesive phase
During for above-mentioned scope, not only can keep good processability, and the chi of Polarizer can be suppressed
Very little change.
3rd adhesive phase storage modulus when 23～80 DEG C is preferably 0.10～1.0MPa,
More preferably 0.15～0.8MPa.Storage modulus when 23～80 DEG C is 0.10～1.0MPa
Time, the polaroid under hygrothermal environment, the stress of the second protecting film can be relaxed, can be more effectively
Reduce the warpage of liquid crystal panel.
[the first protecting film]
As the first protecting film, thermoplastic resin film can be enumerated.As constituting thermoplastic resin
The thermoplastic resin of film, can enumerate cyclic polyolefin resin, acetyl cellulose resins, polyester
In this areas such as resin, polycarbonate resin, acrylic resin, vistanex always with
Carry out widely used material.
As cyclic polyolefin resin, suitable commercially available product, such as TOPAS (note can be enumerated
Volume trade mark) (Topas Advanced Polymers GmbH system), ARTON (registrar
Mark) (JSR Corp.'s system), ZEONOR (registered trade mark) (Japan ZEON
Corporation system), ZEONEX (registered trade mark) (Japan ZEON Corporation
System), APEL (registered trade mark) (Mitsui Chemicals, Inc's system) etc..By such
When cyclic polyolefin resin makes film, can suitably use solvent casting method, extrusion by melting etc.
Known method.It addition, be used as ESCENA (registered trade mark) (hydrops chemistry work
Industry Co., Ltd. system), ZEONOR film (registered trade mark) (Japan ZEON Corporation
System) etc. through masking in advance, impart phase contrast the most further and obtain ring-type poly-
The commercially available product of olefin resin film.
Cyclic polyolefin resin film can be the film obtained through being stretched uniaxially or biaxially.
By stretching, arbitrary phase difference value can be given to cyclic polyolefin resin film.Stretching
Generally while film roll uncoiling is carried out on one side continuously, in heating furnace, along the traveling of volume
Direction or the two direction that direction is vertical with its direct of travel stretch.Heating furnace
Temperature be usually near the glass transition temperature of cyclic polyolefin resin to glass transition
The scope of temperature+100 DEG C.For the multiplying power of stretching, in one direction, usually
1.1～6 times, preferably 1.1～3.5 times.
The usual surface activity of cyclic polyolefin resin film is poor, it is therefore preferable that glue with polaroid
Cement Composite Treated by Plasma, Corona discharge Treatment, ultraviolet treatment with irradiation, fire are implemented in the surface connect
The surface of flame (flame) process, saponification process etc processes.Wherein, can be real relatively easily
Cement Composite Treated by Plasma, the Corona discharge Treatment executed are preferred.
As acetyl cellulose resins film, suitable commercially available product, such as Fujitac (note can be enumerated
Volume trade mark) TD80 (Fujifilm Corporation system), Fujitac (registered trade mark) TD80UF
(Fujifilm Corporation system), Fujitac (registered trade mark) TD80UZ (Fujifilm
Corporation system), Fujitac (registered trade mark) TD40UZ (Fujifilm Corporation
System), KC8UX2M (Konica Minolta Opto Co., Ltd. system), KC4UY (Konica
Minolta Opto Co., Ltd. system) etc..
In order to improve angle of visual field characteristic, liquid can be formed on the surface of acetyl cellulose resins film
Crystal layer etc..It addition, in order to give phase contrast, the acetyl cellulose resins of drawn can be used
Film.For acetyl cellulose resins film, in order to improve the cementability with polaroid, generally may be used
Implement saponification to process.Saponification process can by by film immersion to sodium hydroxide, potassium hydroxide it
The aqueous solution of the alkali of class is carried out.
Polyester resin is the polymer that can be obtained by the polycondensation of binary acid Yu dihydroxylic alcohols, can
Enumerate polyethylene terephthalate, PEN, poly terephthalic acid
Butanediol ester etc..
Polycarbonate-based resin is the polymer on main chain with carbonic acid ester bond, can enumerate logical
The product crossing bisphenol-A and the polycondensation of phosgene and obtain.
Acrylic resin is the polymer with methyl methacrylate as principal monomer, permissible
It is the homopolymer of methyl methacrylate, it is also possible to be methyl methacrylate and acrylic acid first
The copolymer of the acrylate of ester etc.
Polyolefin-based resins is chain olefin the gathering as principal monomer with ethylene, propylene etc
Compound, can be homopolymer, it is also possible to be copolymer.Wherein, preferably propylene homopolymer,
Propylene and a small amount of ethylene copolymer and the copolymer that obtains.
The first above-mentioned protecting film can be monolayer, it is also possible to be multilamellar.Also can protect first
The optical layers such as hard conating, antiglare layer, anti-reflection layer are formed on the surface of cuticula.Protect first
The method forming above-mentioned optical layers on cuticula surface is not particularly limited, available known side
Method.
From the viewpoint of slimming, the thickness of the first protecting film is the thinnest, preferably
It is below 90 μm, more preferably below 50 μm.Whereas if the thinnest, then exist
Intensity reduces, hinders the probability of processability, therefore, usually more than 5 μm.
Tensile modulus of elasticity during 23 DEG C of the first protecting film is usually 1000～8000MPa,
It is preferably 2000～6000MPa.When tensile modulus of elasticity when 23 DEG C is above-mentioned scope, raw
Operability when producing Polarizer is excellent, thus preferably.
Temperature be 40 DEG C, under conditions of relative humidity is 90%, the moisture-inhibiting of the first protecting film
Degree is preferably 1000g/ (m224hr) below, more preferably 800g/ (m224hr) with
Under.Moisture permeability is 1000g/ (m2Time 24hr) below, can more effectively suppress liquid crystal surface
The warpage of plate.Moisture permeability is usually 10g/ (m2More than 24hr).In this specification, thoroughly
Humidity refers to, utilizes the weight method (Cup Method) of regulation in JIS Z 0208 to record
Value.
In order to be fitted with polaroid by the first protecting film, bonding agent generally can be used.As viscous
Connect agent, can use by polyvinyl alcohol resin aqueous solution, water system two-liquid type carbamate system
The water system bonding agent that emulsion adhesive etc. are formed.Wherein, polyethenol series tree is preferably used
Fat aqueous solution.As in the polyvinyl alcohol resin that bonding agent uses, except to as acetic acid
The vinyl alcohol homopolymerization that the polyvinyl acetate of the homopolymer of vinyl acetate carries out saponification process and obtains
Outside thing, also comprise to vinyl acetate with can enter with the copolymer of other monomers of its copolymerization
Row saponification processes and the ethenol system copolymer that obtains and their hydroxyl is carried out part
Modified and the modified polyvinylalcohol based polymer etc. that obtains.Can add many in water system bonding agent
Unit's aldehyde (polyaldehyde), soluble epoxide compound, tripolycyanamide based compound, oxygen
Change zirconium compounds, zinc compound etc. as additive.At the bonding agent using such water system
Time, bond layer therefrom is generally significantly thinner than 1 μm, shows even with common optics
Micro mirror observes cross section, does not the most also observe this bond layer.
It addition, it be also possible to use the Photocurable adhesive agent as non-water system bonding agent.As light
Curable bonding agent, such as, can enumerate photo-curable epoxy resin and draw with light cationic polymerization
Send out the mixture etc. of agent.When using light-cured resin as bonding agent, by film stacking
After, irradiate active energy beam, thus make Photocurable adhesive agent solidify.Active-energy is penetrated
The light source of line is not particularly limited, and preferably has at below wavelength 400nm and sends out work photodistributed
Property energy-ray, specifically, preferably uses low pressure mercury lamp, medium pressure mercury lamp, high-pressure mercury
Lamp, ultrahigh pressure mercury lamp, chemical lamp, black light lamp, microwave-excited mercury lamp, metal halide lamp
Deng.The thickness of the bond layer after solidification when using Photocurable adhesive agent is usually
About 0.001～5 μm, more than preferably 0.01 μm, additionally, it is preferred that be below 2 μm.
In order to improve the closing force with polaroid, the most in advance the first protecting film is implemented surface
Activation processing.As surface activation process, can enumerate at Corona discharge Treatment, plasma
Reason, discharge process (glow discharge process etc.), flame treatment, ozone process, UV ozone
Doing of process, ionization activity Irradiation (UV treatment, electron beam treatment etc.) etc
Formula processes；Use water, the ultrasonic Treatment of acetone equal solvent, alkali to process, anchor is coated with (anchor
Coat) wet processed of process etc.These process can individually be carried out, it is possible to combine 2 kinds with
On.Wherein, from the standpoint of the film of web-like is carried out continuously process, preferably at corona discharge
Reason, Cement Composite Treated by Plasma.
[the second protecting film]
Second protecting film can be the film as the first protecting film, it is however preferred to have optics merit
The functional membrane of energy.So-called optical function, can enumerate the suppression mapping of ambient, reflection
Function；Improve the function of the brightness of display device；Etc..Wherein, as the second protection
Film, it is however preferred to have improve the film of the function of the brightness of display device.
As the film of the function with the suppression mapping of ambient, reflection, counnter attack can be enumerated
Penetrate film.Antireflection film can by formed on the base material film formed by transparent resin antiglare layer,
Anti-reflection layer and obtain.As the base material film formed by transparent resin, can enumerate and protect with first
The film that cuticula is same.
For antiglare layer, generally, by utilizing sandblasting (sandblast), embossing processing
Etc. making, base material film surface is roughened, or will in ultraviolet curing resin mixed transparent micro-
Grain and the coating solution that obtains are on base material film and make it solidify, thus at the table of base material film
Formed concavo-convex on face.
Anti-reflection layer can by utilize the rubbing methods such as nick version coating, be deposited with, the physics such as sputtering
Vapour deposition process arranges the layer of Organic substance, metal, metallic compound etc. and is formed.
As the Organic substance used to form anti-reflection layer, can enumerate and import fluorine atom
Polymer etc..As metal, aluminum, silver etc. can be used suitably.Metallic compound is usual
For inorganic matter, inorganic oxide, inorganic sulphide, inorganic fluoride etc. can be used.As
Inorganic oxide, can enumerate silicon oxide, zinc oxide, titanium oxide, niobium oxide, cerium oxide,
Indium sesquioxide .-stannum, tungsten oxide, molybdenum oxide, stibium oxide, aluminium oxide, zirconium oxide etc..As nothing
The example of machine sulfide, can enumerate zinc sulfide, antimony trisulfide etc..Example as inorganic fluoride
Son, can enumerate aluminium fluoride, lithium fluoride, sodium fluoride, Afluon (Asta), calcium fluoride, strontium fluoride,
Barium fluoride, yttrium fluoride, lanthanum fluoride, cerium fluoride, samaric fluoride, fluorination niobium, Lead difluoride etc..
When arranging anti-reflection layer, these Organic substances, metal, metallic compound etc. the layer formed
There is at least 1 layer, the most also can form multilamellar.
As the film of the function with the brightness improving display device, brightness enhancement film can be enumerated.Make
For brightness enhancement film, can enumerate: the anisotropy of stacking multi-disc refractive index thin film different from each other,
And according to making reflectance produce the reflection-type rectilinearly polarized light that anisotropic mode designs
Separate sheet material, on film base material, be supported with cholesteric liquid crystal (cholesteric liquid crystal)
The circularly polarizing separation sheet material of the alignment films of polymer or its aligned liquid-crystal layer, metal is implemented
Microfabrication thus also penetrate even for visible region reflective polarizer metallic grid reflection
Polaroid, the film etc. metal particle being added in macromolecule matrix and carrying out stretching and obtain.
As commercially available brightness enhancement film, DBEF (registered trade mark) (3M company system), APF-V3 can be enumerated
(3M company system), APF-V2 (3M company system) etc..
For the second protecting film, also with the first protecting film again it is preferred to real to its surface in advance
Execute surface activation process.As surface activation process, can enumerate Corona discharge Treatment, etc. from
Daughter process, discharge process (glow discharge process etc.), flame treatment, ozone process,
UV ozone process, ionization activity Irradiation (UV treatment, electron beam treatment etc.) it
The dry process of class；Utilize water, the ultrasonic Treatment of acetone equal solvent, alkali to process, anchor is coated with
The wet processed of process etc.These process can individually be carried out, it is possible to combines two or more.
Wherein, from the standpoint of the film of web-like is carried out continuously process, preferably Corona discharge Treatment,
Cement Composite Treated by Plasma.
The thickness of the second protecting film is usually 5～100 μm, and preferably 10～50 μm are more excellent
Elect 10～40 μm as.When the thickness of the second protecting film is above-mentioned scope, not only can play good
Optical function, and the slimming to Polarizer also has contribution.
Second protecting film can be monolayer, it is also possible to for multilamellar.It addition, the second protecting film can
To be the stacking film with the film of different optical functions, in this case, it is preferably
In brightness enhancement film, stacking has the film of the film of other optical functions.
[the 3rd protecting film]
As the 3rd protecting film, the protecting film as the first protecting film can be enumerated.For
For one protecting film and the 3rd protecting film, constitute the kind of resin of film and mixing ratio, with
And the thickness etc. of film can be the same or different.
About the thickness of the 3rd protecting film, in the same manner as the first protecting film, from the sight of slimming
Point considers, below preferably 90 μm, below more preferably 50 μm.Whereas if the thinnest,
Then there is the probability that intensity reduces, hinders processability, therefore, the thickness of the 3rd protecting film
Usually more than 5 μm.
Tensile modulus of elasticity during 23 DEG C of the 3rd protecting film is usually 500～10000MPa,
It is preferably 500～5000MPa.When tensile modulus of elasticity when 23 DEG C is above-mentioned scope, raw
Operability when producing Polarizer is excellent, thus preferably.
Temperature be 40 DEG C, under conditions of relative humidity is 90%, the moisture-inhibiting of the 3rd protecting film
Degree is preferably 1000g/ (m224hr) below, more preferably 800g/ (m224hr) with
Under.Moisture permeability is usually 10g/ (m2More than 24hr).Moisture permeability is 1000g/ (m2·
Time 24hr) below, can more effectively suppress the warpage of liquid crystal panel.
3rd protecting film can be monolayer, it is also possible to for multilamellar, it is possible to same with the second protecting film
Sample ground forms the optics such as hard conating, antiglare layer, anti-reflection layer on the surface of the 3rd protecting film
Layer.On the face away from the farther side of polaroid of the 3rd protecting film, preferably form hard conating.Logical
Cross formation hard conating, the variations in temperature because happening over and over again drastically can be more efficiently prevented from and cause
The rupturing of polaroid.
Hard conating can be the hard conating that surface is smooth, additionally, it is possible to have recessed from the teeth outwards
Convex.Hard conating can be by by polyorganosiloxane resin, acrylic resin, carbamate propylene
The resin materials such as acid ester resin or in this resin mixed fillers and the product that obtains be applied to
Formed on protecting film.Hard conating can be by utilizing spin-coating method, micro-gravure coating process etc. known
Method be coated with above-mentioned resin make it solidify and arrange.
The thickness of hard conating is usually about 1～30 μm, and more than preferably 3 μm, it addition,
It is preferably below 20 μm.Its refractive index is usually less than 1.65, preferably 1.45～1.65.
It addition, the pencil hardness of hard conating is preferably more than H, can be more than 2H.By making
Pencil hardness is more than H, can effectively suppress the damage to the 3rd protecting film surface, easily press down
Rupturing of the polaroid that system causes because of damage.Pencil hardness is according to JIS K 5600-5-4:1999
Obtain, by the hardest pencil hard not producing damage when the pencil delineation using each hardness
Degree represents.
For the 3rd protecting film, also with the first protecting film again it is preferred to real to its surface in advance
Execute surface activation process.As surface activation process, can enumerate Corona discharge Treatment, etc. from
Daughter process, discharge process (glow discharge process etc.), flame treatment, ozone process,
UV ozone process, ionization activity Irradiation (UV treatment, electron beam treatment etc.) it
The dry process of class；Utilize water, the ultrasonic Treatment of acetone equal solvent, alkali to process, anchor is coated with
The wet processed of process etc.These process can individually be carried out, it is possible to combines two or more.
Wherein, from the standpoint of the film of web-like is carried out continuously process, preferably Corona discharge Treatment,
Cement Composite Treated by Plasma.
[stripping film]
Stripping film is the film for protecting Polarizer before Polarizer is fitted to liquid crystal cell,
As in figure 2 it is shown, preferably layer is stacked on the first adhesive phase.
Stripping film is generally made up of the thermoplastic resin film implementing demoulding process in one side, its
The demoulding processes face and is bonded to the 1st adhesive phase.As the thermoplastic resin of composition stripping film,
Thermoplastic resin as the thermoplastic resin can enumerated and constitute the first protecting film.Stripping film
Thickness be usually 10～50 μm.
One example of the manufacture method of the Polarizer of the present invention is illustrated.First, at polarisation
Fit in the one side of sheet the first protecting film.Polaroid and/or the first protecting film are coated with bonding
Both are fitted by agent.Coating process is not limited, known method can be used.
When using water system bonding agent as bonding agent, drying process is generally set, consolidates making to use up
During the property changed bonding agent, generally irradiate active energy beam.
It is on the face of opposition side in the face with laminating polaroid of the first protecting film, arranges first
Adhesive phase.First adhesive phase can be by being coated directly onto the first adhesive composition partially
On mating plate and be dried and arrange, it is possible to the first adhesive phase will be coated with on base material film also
The adhesive sheet making it be dried and to obtain is laminated in polaroid.In either case, to painting
Cloth method is all unrestricted, can use known method.In order to arrange the first adhesive phase and layer
During folded adhesive sheet, the base material film of adhesive sheet also can play the effect of stripping film.
It is on the face of opposition side in the face with the first protecting film of fitting of polaroid, arranges second
Adhesive phase.As the method arranging the second adhesive phase, can enumerate and arrange the first bonding
The method that the method for oxidant layer is same.
It is on the face of opposition side in the face with laminating polaroid of the second adhesive phase, stacking the
Two protecting film., can peel off during laminating adhesive sheet material to arrange the second adhesive phase
Stacking the second protecting film after base material film.
The binding face with the second adhesive phase of fitting at the second protecting film is the face of opposition side
On, stacking the 3rd adhesive phase.As the method for stacking the 3rd adhesive phase, can enumerate with
The method that the method for stacking the first adhesive phase is same.
The binding face with the second protecting film of fitting at the 3rd adhesive phase is the face of opposition side
On, stacking the 3rd protecting film.In order to arrange the 3rd adhesive phase and during laminating adhesive sheet material,
Can after peeling base film stacking the 3rd protecting film.
Can be according to the Polarizer manufacturing the present invention with upper type.In above-mentioned manufacture method, note
The method having carried each layer of sequentially stacking, but such as when stacking the second protecting film, it is possible in advance
Stacking the 3rd adhesive phase and the 3rd blooming on the second protecting film.
By the Polarizer of the present invention is fitted in liquid crystal cell, available liquid crystal panel.This liquid
Brilliant box can be existing known any pattern such as IPS pattern, VA pattern, TN pattern.
When the Polarizer of the present invention is fitted in liquid crystal cell, preferably incite somebody to action this via the first adhesive phase
The Polarizer of invention fits in liquid crystal cell.In liquid crystal panel, generally by 2 Polarizers with it
Absorb the orthogonal mode of axle to fit, as long as the Polarizer that a piece of Polarizer is the present invention is i.e.
Can, as another sheet Polarizer, known Polarizer can be used.As known Polarizer,
Can be the Polarizer only in the one side of polaroid with protecting film, it is also possible to be on two sides
On there is the Polarizer of protecting film.For known Polarizer, can protect except stacking
The suitable film of stacking is gone back outside cuticula.As suitable film, phase retardation film, visual field can be enumerated
Angle expands film, antireflection film etc..It addition, the protecting film being had as known Polarizer,
Protecting film as can enumerating the first protecting film that the Polarizer with the present invention is had.
The thickness of the polaroid that known Polarizer is had is preferably below 30 μm, more preferably
It is below 15 μm, additionally, it is preferred that be more than 3 μm.The gross thickness of known Polarizer is excellent
Elect below 150 μm as, below more preferably 100 μm, additionally, it is preferred that be more than 30 μm.
The thickness of polaroid and/or the gross thickness of known Polarizer that known Polarizer is had are
During above-mentioned scope, the stress of the polaroid that the known Polarizer under hygrothermal environment is had with
The stress of the polaroid that the Polarizer of the present invention is had becomes equal extent, is balance,
Therefore, the warpage of liquid crystal panel can more effectively be suppressed.
The Polarizer of the present invention can be properly assembled in various liquid crystal indicators.By this
When bright Polarizer is assemblied in liquid crystal indicator, the Polarizer of the present invention is preferably arranged at
The light source side of liquid crystal indicator.
Embodiment
Below, it is shown that embodiment specifically describes the present invention further, but the present invention is not by this
The restriction of a little examples.In example, unless otherwise specified, then represent with content or usage amount
% and part be on the basis of weight.
[assay method of thickness]
Thickness utilizes the digital micrometer (digital micrometer) of Nikon Corporation
MH-15M measures.
[assay method of phase difference value]
Prince is utilized to measure KOBRA (registered trade mark)-ADH (its of machine Co., Ltd.
It is with parallel Nicolle (parallel Nicol) circumgyration phase meter as principle), in 23 DEG C,
Utilize the light measurement phase difference value that wavelength is 590nm, 483nm or 755nm.
[assay method of storage modulus]
The storage modulus of adhesive phase utilizes following method to measure.
(1) from adhesive phase, take 2 parts of samples of each 25 ± 1mg, be shaped to respectively substantially
Spherical.
(2) the most spherical sample obtained is fitted in the upper and lower surface of I type fixture,
Upper and lower surface all uses L-type holder.The composition measuring sample is L-type fixture/binding agent/I
Type fixture/binding agent/L-type fixture.
(3) utilize Measurement of Dynamic Viscoelasticity device (IT measurement Zhi Yu Co., Ltd. system,
DVA-220), temperature be 23 DEG C, frequency be 1Hz, initial strain be the condition of 1N
The storage modulus of the sample that lower mensuration makes as described above.
Each component of the Polarizer of the composition of preparation present invention in such a way.
＜ polaroid ＞
Utilizing dry type stretching, by the polyvinyl alcohol film of thick 20 μm, (average degree of polymerization is about
2,400, saponification degree is 99.9 moles of more than %) uniaxial tension is to about 5 times, and then keep tight
Stretch tight state, impregnates 1 minute, then, in 28 DEG C at iodine/potassium iodide in the pure water of 60 DEG C
The weight ratio of/water be 0.05/5/100 aqueous solution in impregnate 60 seconds.Then, in 72 DEG C
The aqueous solution that weight ratio is 8.5/8.5/100 of potassium iodide/boric acid/water impregnates 300 seconds.Connect down
Come, with the pure water 20 seconds of 26 DEG C, be then dried in 65 DEG C, obtain in poly-second
In enol film, gas absorption quantity has the polaroid of thickness 7 μm of iodine.
＜ the first adhesive phase ＞
Implementing the polyethylene terephthalate film that thickness is 38 μm that the demoulding processes
The city of the acrylic adhesive layer of thick 20 μm it is provided with on the demoulding process face of (stripping film)
The adhesive sheet sold.Do not coordinate urethane acrylate oligomer.This is glued
For the storage modulus of mixture layer, it is 0.05MPa when 23 DEG C, when 80 DEG C is
0.04MPa。
＜ the second adhesive phase ＞
Utilize die coating machine (die coater), will be at butyl acrylate and acrylic acid copolymer
Middle interpolation urethane acrylate oligomer and isocyanates system cross-linking agent and having of obtaining
Machine solvent solution, is applied to implement the poly terephthalic acid second two of thickness 38 μm that the demoulding processes
On the demoulding process face of alcohol ester film (stripping film) and be dried so that dried thickness
Become 5 μm, obtain adhesive sheet.For the storage modulus of this adhesive phase,
It is 0.40MPa when 23 DEG C, is 0.18MPa when 80 DEG C.
＜ the 3rd adhesive phase ＞
Utilize die coating machine, amino first will be added in butyl acrylate with acrylic acid copolymer
Acid esters acrylate oligomer and isocyanates system cross-linking agent and the organic solvent solution that obtains,
The polyethylene terephthalate film being applied to implement thickness 38 μm that the demoulding processes (is peeled off
Film) demoulding process face on and be dried so that dried thickness becomes 5 μm,
To adhesive sheet.For the storage modulus of this adhesive phase, when 23 DEG C it is
0.40MPa, is 0.18MPa when 80 DEG C.
＜ the first protecting film ＞
Thickness is the cycloolefin resin film (Japan's ZEON Corporation system) of 13 μm.
Wavelength is delay (in-plane retardation) (Re (590)) in face during 590nm
=0.8nm, wavelength is thickness direction retardation (Rth (590))=3.4nm during 590nm,
Wavelength is thickness direction retardation (Rth (483))=3.5nm during 483nm, and wavelength is
Thickness direction retardation (Rth (755))=2.8nm during 755nm
＜ the second protecting film ＞
Brightness enhancement film (3M system, the trade name Advanced Polarized using thickness to be 26 μm
Film, Version 3).
＜ the 3rd protecting film ＞
Use the tri acetyl cellulose membrane (TOPPAN that surface processes through hard painting
TOMOEGAWA OPTICAL FILMS CO., LTD. system, 25KCHC-TC).Thick
Degree is 32 μm, temperature be 40 DEG C, under conditions of relative humidity is 90%, moisture permeability is
450g/(m2·24hr).It addition, the pencil hardness through the face that hard painting processes is 2H.
Use polyester based resin film.Thickness is 38 μm, is 40 DEG C, relative humidity in temperature
Under conditions of being 90%, moisture permeability is 20g/ (m2·24hr)。
[preparation of water system bonding agent]
In 100 parts of water, dissolve 3 parts of carboxy-modified polyvinyl alcohol (Co., Ltd. Kuraray
The KL-318 of system), this aqueous solution adds 1.5 parts as soluble epoxide compound
Daiamid epoxy system additive (the Sumirez Resin of Sumika Chemtex Company
(registered trade mark) 650 (30), the aqueous solution of solid component concentration 30%), make water system
Bonding agent.
[making of Polarizer precursor A]
In the one side of above-mentioned polaroid, state cyclic olefin resins via water system bond layer is stacked on
Protecting film (the first protecting film).After stacking, carry out 5 minutes being dried in 80 DEG C, thus,
First protecting film is fitted with polaroid.After laminating, in 40 DEG C of maintenances 168 hours.
The binding face with the first protecting film of fitting at polaroid is on the face of opposition side, laminating
The second adhesive phase being laminated on stripping film.
The binding face with laminating polaroid at the first protecting film is on the face of opposition side, laminating
The first adhesive phase being laminated on stripping film.
According to upper type, make and be sequentially laminated with the first adhesive phase, cyclic olefin resins
The Polarizer precursor A of protecting film, polaroid and the second adhesive phase.
[making of Polarizer precursor B]
In the one side of above-mentioned polaroid, state cyclic olefin resins via water system bond layer is stacked on
Protecting film (the first protecting film).On the another side of polaroid, via water system bonding agent
Stacking thickness is tri acetyl cellulose membrane (Konica Minolta Opto Co., the Ltd. of 25 μm
System, KC2UAW).
After stacking, carry out 5 minutes being dried in 80 DEG C, thus, by the first protecting film with inclined
Mating plate is fitted.After laminating, in 40 DEG C of maintenances 168 hours.
The binding face with laminating polaroid at tri acetyl cellulose membrane is on the face of opposition side,
The second adhesive phase that laminating is laminated on stripping film.
The binding face with laminating polaroid at the first protecting film is on the face of opposition side, laminating
The first adhesive phase being laminated on stripping film.
According to upper type, make and be sequentially laminated with the first adhesive phase, cyclic olefin resins
The Polarizer precursor B of protecting film, polaroid, tri acetyl cellulose membrane and the second adhesive phase.
[making of Polarizer A]
In above-mentioned brightness enhancement film (the second protecting film), via above-mentioned 3rd adhesive phase laminating
The tri acetyl cellulose membrane (the 3rd protecting film) that the painting firmly of above-mentioned warp processes, obtains stacked guard
Film.Laminating is the side with the face not carrying out hard painting process of tri acetyl cellulose membrane as binding face
Formula is carried out.The thickness of stacked guard film is 63 μm.It should be noted that in brightness enhancement film and
On the face contacted with the 3rd adhesive phase of the tri acetyl cellulose membrane processed through hard painting, in advance
Implement Corona discharge Treatment.Closing force between 3rd adhesive phase and brightness enhancement film is
10N/25mm。
It addition, in the case of brightness enhancement film not being implemented Corona discharge Treatment, the 3rd binding agent
Closing force between layer and brightness enhancement film is 2.0N/25mm.
Stripping film on the second adhesive phase in above-mentioned Polarizer precursor A is peeled off.Will be partially
The second adhesive phase in light plate front body A and the brightness enhancement film laminating in stacked guard film, obtain
Sequentially be laminated with the first adhesive phase, the protecting film of cyclic olefin resins, polaroid, second glue
Mixture layer, brightness enhancement film, the 3rd adhesive phase and the tri acetyl cellulose membrane that processes through hard painting
Polarizer A.
[making of Polarizer B]
Stacked guard film is replaced to above-mentioned brightness enhancement film, in addition, with the system of Polarizer A
Make method similarly to operate, be sequentially laminated with first adhesive phase, cyclic olefin resins
Protecting film, polaroid and the second adhesive phase, the Polarizer B of brightness enhancement film.
[making of Polarizer C]
Stripping film on the second adhesive phase in above-mentioned Polarizer precursor B is peeled off.Will be partially
The second adhesive phase in light plate front body B is fitted with above-mentioned brightness enhancement film, is sequentially laminated with
First adhesive phase, the protecting film of cyclic olefin resins, polaroid, tri acetyl cellulose membrane,
The Polarizer C of the second adhesive phase and brightness enhancement film.
[embodiment 1]
[cold and heat succeed each other test]
Polarizer A is cut into 100mm × 60mm.By the stripping film on the first adhesive phase
Peel off, via the first adhesive phase, Polarizer A fitted in alkali-free glass (Corning company
System, EAGLE XG (registered trade mark)).At the above-mentioned Polarizer A fitted on glass
The position away from end 1.0mm, utilize scratch type durometer (Germany's Erichsen company system,
Model 318, bulb diameter 0.75mm), the load to the surface applying 3N of Polarizer A,
Produce impression.The degree of depth of impression is below 1 μm, a size of Φ 0.2mm.
It addition, made following sample the most respectively: at other polarisations fitted on glass
The position away from end 1.0mm of plate A, utilizes scratch type durometer, the table to Polarizer A
Face applies the load of 5N and 10N.The degree of depth of the impression applying the load of 5N and produce
It is 2～5 μm, a size of Φ 0.3mm.The impression applying the load of 10N and produce deep
Degree is 5～8 μm, a size of Φ 0.4mm.
The damage given by applying the operation of load on Polarizer surface is generally assumed to be
Damage for producing in the following cases: utilize the sharp keen utensil peel plies such as tweezers to be laminated on partially
The situation of the protecting film on tabula rasa；When backlight is fitted with Polarizer, different introducing
Situation about fitting is carried out under the state of thing；Etc..
It is respectively directed to apply the load of 3N, 5N or 10N thus there is on surface the inclined of impression
Tabula rasa A, implements to cold and heat succeed each other test (250 circulations), described in cold and heat succeed each other and test,
To expose 30 minutes at a temperature of 85 DEG C, and expose at a temperature of-40 DEG C 30 minutes and make
It it is 1 circulation.Judge in such a way.Result is shown in table 1.
＜ judges ＞
By when applying arbitrary load after the test that colds and heat succeed each other polaroid all rupture
Situation is designated as "○".
By the situation that polaroid ruptures after the test that colds and heat succeed each other when applying arbitrary load
It is designated as "×".
[high heat test and high damp heat test]
Polarizer A is cut growth limit 155mm × minor face 96mm and (along long limit, there is Polarizer
Absorption axle).Stripping film on first adhesive phase is peeled off, via the first adhesive phase,
Be fitted in thickness be 0.4mm, on the glass plate of the longest limit 160mm × minor face 102mm.
It is on the face of opposition side in the face with the Polarizer A that fitted of glass plate, via acrylic acid series
Adhesive phase, laminating has cut growth limit 155mm × minor face 96mm and (has had partially along minor face
The absorption axle of tabula rasa) commercially available Polarizer (Sumitomo Chemical Co's system,
SRCZ4QH-HCB)。
For above-mentioned commercially available Polarizer, the thickness of polaroid is 12 μm, at polaroid
One side on to be fitted with thickness be being formed by non-stretched norbornene resin of 23 μm
Protecting film, is fitted with the tri acetyl cellulose membrane that thickness is 25 μm, gross thickness on another side
It is 60 μm.The laminating of commercially available Polarizer is carried out in such a way: make non-stretched by dropping
The protecting film of bornylene system resin formation contacts with the adhesive phase of aforesaid propylene acid system, additionally,
The absorption axle making Polarizer A is vertical with the absorption axle of above-mentioned commercially available Polarizer.More than according to
Mode, the Polarizer A of the present invention that fits in the one side of glass plate, fits on another side
Commercially available Polarizer, thus make glass sample.
First, under high thermal environment (85 DEG C), stand glass sample 250 hours.It addition,
At high humid and warm environment (60 DEG C, 90%R.H.), stand other glass samples 250 hours.
After taking out the glass sample after standing under each environment, immediately with above-mentioned commercially available polarisation
Plate be positioned at upside mode, be placed on two-dimensional measurement instrument (Nikon Corporation system,
NEXIV (registered trade mark) MR-12072) mensuration platform on.It follows that for measuring platform
Surface focus, and at this on the basis of, then for 25 points on glass sample face respectively
Focus, is measured the height differed with the focus as benchmark.By in 25 measuring points
The difference of maxima and minima of height as amount of warpage.Specifically, by shown in Fig. 3
Point 50 as measuring point.25 points are the region of the inner side of the end 7mm away from Polarizer
Interior point, short side direction is about 20mm interval, and long side direction is about 35mm interval.
Judge in such a way.Result is shown in table 1.It should be noted that arbitrarily
In glass sample, the tilting to film the most unconfirmed or stripping.
＜ judges ＞
The amount of warpage of the glass sample after standing under high humid and warm environment is below 0.3mm's
Situation is designated as "○".
The amount of warpage of the glass sample after standing under the high humid and warm environment feelings more than 0.3mm
Condition is designated as "×".
The feelings that amount of warpage is below 0.5mm of the glass sample after standing under high thermal environment
Condition is designated as "○".
The amount of warpage of the glass sample after standing under the high thermal environment situation more than 0.5mm
It is designated as "×".
[embodiment 2]
As the 3rd protecting film, the triacetyl fibre processed through hard painting that will use in Polarizer A
Dimension element film replaces to the polyester based resin film (moisture permeability: 20g/ (m that thickness is 38 μm2·
24hr)), make be fitted with polyester based resin film that above-mentioned thickness is 38 μm (moisture permeability:
20g/(m2Polarizer A2 24hr)), according to mode similarly to Example 1, implements cold
Heat alternately test, high heat test and high damp heat test.The above results are shown in table 1.
[comparative example 1]
Polarizer B is used to replace Polarizer A, according to mode similarly to Example 1, real
Execute the test that colds and heat succeed each other, high heat test and high damp heat test.The above results are shown in table 1.
[comparative example 2]
Polarizer C is used to replace Polarizer A, according to mode similarly to Example 1, real
Execute the test that colds and heat succeed each other, high heat test and high damp heat test.The above results are shown in table 1.
Table 1
Claims (9)
1. Polarizer, wherein, is laminated with the first protecting film in the one side of polaroid,
First is had in the opposition side in the face being laminated with described polaroid of described first protecting film
Adhesive phase,
The another side of described polaroid is laminated with the second protection via the second adhesive phase
Film,
The binding face with described second adhesive phase of fitting at described second protecting film is contrary
On the face of side, it is laminated with the 3rd protecting film via the 3rd adhesive phase,
Closing force between described second protecting film and described 3rd adhesive phase is
More than 1.0N/25mm.
2. Polarizer as claimed in claim 1, wherein, the thickness of polaroid is 10 μm
Below.
3. Polarizer as claimed in claim 1 or 2, wherein, the thickness of the 3rd protecting film
It is 5～90 μm.
4. Polarizer as claimed in claim 1 or 2, wherein, temperature is 40 DEG C, relatively
Humidity be the moisture permeability of the 3rd protecting film under conditions of 90% be 1000g/ (m2·24hr)
Below.
5. Polarizer as claimed in claim 1 or 2, wherein, the 3rd when 23～80 DEG C
The storage modulus of adhesive phase is 0.15～1.0MPa.
6. liquid crystal panel, it has the Polarizer described in claim 1 or 2 and liquid crystal cell.
7. liquid crystal panel, it sequentially has: the Polarizer described in claim 1 or 2, liquid
Brilliant box and the Polarizer that thickness is below 30 μm of polaroid.
8. liquid crystal indicator, it has the liquid crystal panel described in claim 6.
9. liquid crystal indicator, it has the liquid crystal panel described in claim 7.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-130752 | 2015-06-30 | ||
| JP2015130752 | 2015-06-30 | ||
| JP2016005059A JP6172302B2 (en) | 2015-06-30 | 2016-01-14 | Polarizing plate, liquid crystal panel, and liquid crystal display device |
| JP2016-005059 | 2016-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106324741A true CN106324741A (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610483674.0A Pending CN106324741A (en) | 2015-06-30 | 2016-06-27 | Polarizing plate, liquid crystal panel and liquid crystal display device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102525401B1 (en) |
| CN (1) | CN106324741A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803146A (en) * | 2018-07-03 | 2018-11-13 | Oppo广东移动通信有限公司 | Display screen component and electronic equipment |
| CN110869840A (en) * | 2017-07-14 | 2020-03-06 | 株式会社Lg化学 | Liquid crystal panel and method for manufacturing same |
| CN111103647A (en) * | 2018-10-26 | 2020-05-05 | 住友化学株式会社 | Liquid crystal layer laminate |
| CN112946807A (en) * | 2021-01-29 | 2021-06-11 | 武汉华星光电技术有限公司 | Polarizer, manufacturing method thereof and display device |
| CN113646675A (en) * | 2019-03-29 | 2021-11-12 | 日东电工株式会社 | Optical film group and optical laminate |
| CN113853538A (en) * | 2019-10-31 | 2021-12-28 | 株式会社Lg化学 | Polarizing plate laminate and method for producing same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102609499B1 (en) | 2019-08-14 | 2023-12-05 | 주식회사 엘지화학 | Surface Protection Film |
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| CN101910890A (en) * | 2008-01-08 | 2010-12-08 | 住友化学株式会社 | Polarizer |
| CN103184019A (en) * | 2011-12-29 | 2013-07-03 | 第一毛织株式会社 | Adhesive used for polarizing plate, polarizing plate including an adhesive layer, and optical member |
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| JP2001031924A (en) * | 1999-07-19 | 2001-02-06 | Nitto Denko Corp | Surface-protective film |
| JP5211588B2 (en) * | 2006-09-29 | 2013-06-12 | 大日本印刷株式会社 | Protective film |
| JP5332599B2 (en) | 2008-07-11 | 2013-11-06 | 住友化学株式会社 | Polarizing plate, manufacturing method thereof, and composite polarizing plate using the same |
| JP2014006505A (en) * | 2012-05-10 | 2014-01-16 | Fujifilm Corp | Liquid crystal display device |
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2016
- 2016-06-27 KR KR1020160080047A patent/KR102525401B1/en active IP Right Grant
- 2016-06-27 CN CN201610483674.0A patent/CN106324741A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910890A (en) * | 2008-01-08 | 2010-12-08 | 住友化学株式会社 | Polarizer |
| CN103184019A (en) * | 2011-12-29 | 2013-07-03 | 第一毛织株式会社 | Adhesive used for polarizing plate, polarizing plate including an adhesive layer, and optical member |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110869840A (en) * | 2017-07-14 | 2020-03-06 | 株式会社Lg化学 | Liquid crystal panel and method for manufacturing same |
| US11487148B2 (en) | 2017-07-14 | 2022-11-01 | Shanjin Optoelectronics (Suzhou) Co., Ltd. | Polarizing plate having specified ratio of polarizing film shrinkage force to protective film shrinkage force |
| CN110869840B (en) * | 2017-07-14 | 2023-01-06 | 杉金光电(苏州)有限公司 | Liquid crystal panel and method for manufacturing same |
| CN108803146A (en) * | 2018-07-03 | 2018-11-13 | Oppo广东移动通信有限公司 | Display screen component and electronic equipment |
| CN111103647A (en) * | 2018-10-26 | 2020-05-05 | 住友化学株式会社 | Liquid crystal layer laminate |
| CN113646675A (en) * | 2019-03-29 | 2021-11-12 | 日东电工株式会社 | Optical film group and optical laminate |
| CN113853538A (en) * | 2019-10-31 | 2021-12-28 | 株式会社Lg化学 | Polarizing plate laminate and method for producing same |
| CN112946807A (en) * | 2021-01-29 | 2021-06-11 | 武汉华星光电技术有限公司 | Polarizer, manufacturing method thereof and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170003422A (en) | 2017-01-09 |
| KR102525401B1 (en) | 2023-04-24 |
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Application publication date: 20170111 |