CN108291995A - Composite polarizing plate and image display comprising the composite polarizing plate - Google Patents
Composite polarizing plate and image display comprising the composite polarizing plate Download PDFInfo
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- CN108291995A CN108291995A CN201680067058.5A CN201680067058A CN108291995A CN 108291995 A CN108291995 A CN 108291995A CN 201680067058 A CN201680067058 A CN 201680067058A CN 108291995 A CN108291995 A CN 108291995A
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- Prior art keywords
- polarizing plate
- polarizer
- composite polarizing
- difference layer
- compound
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- 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
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/42—Polarizing, birefringent, filtering
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polarising Elements (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention provides a kind of composite polarizing plate and the image display comprising the composite polarizing plate, and above-mentioned composite polarizing plate includes：Polarizer；And the compound phase potential difference layer for being configured at at least one side of polarizer and being made of in the way of stacking gradually in polarizer first phase difference layer, light curable adhesive layer and second phase difference layer, wherein, in the range of 20 DEG C to 90 DEG C compound phase potential difference layer rigidity relative to temperature have 514 to 275 slope.Therefore, composite polarizing plate has the adhesion property between the bending property and phase separation layer of the display improved, and has excellent light leakage property because of the rigidity of compound phase potential difference layer and bending property improvement.
Description
Technical field
Image display the present invention relates to composite polarizing plate and comprising the composite polarizing plate.
Background technology
Consistently with Message Display Terminal's device such as mobile phone and PDA, the development trend of presentation of information is from can
It realistically presents and towards mobility and facilitates sexual development centered on the high-effect and high function of things.Therefore, to light-weight and appearance
Foldable without the flexible display in space and shape limitation because having wilderness demand.
More specifically, flexible display refers to the display manufactured using the flexible base board that can be bent or folded, depend on
In its purposes and function, (rugged) display of reinforcing, flexible (bendable) display, rollable can be classified into
(rollable) display.In addition, flexible display is just in developing display, taken by thin and flexible substrate
For existing flat-panel monitor (FDP) such as liquid crystal display (LCD) or the film crystal of Organic Light Emitting Diode (OLED)
It is used in pipe (TFT) device substrate, filter substrate, the substrate for touch screen panel and the substrate for solar cell
Not only again but also crisp glass plate, so as to obtain a variety of applications from the limitation in space and shape.Finally, change can be distorted
The business of the display of the similar paper of shape turns to target and actively carries out the lasting research and development in relation to flexible display.
The flexible base board used in such flexible display is formed as multilayered structure.Therefore, in order to will be wrapped in multilayered structure
The phase separation layer contained is engaged with each other, and uses pressure adhesive.Meanwhile flexible base board is often bent when in use, if phase separation layer
Between engaging force it is weak, then have adhesive layer expand or phase separation layer remove the problems such as.
For example, Ebrean Registered Patent the 1191865th discloses the relevant technologies of flexible base board, but do not propose to solve aforementioned
The scheme of problem.
Invention content
Therefore, it is an object of the present invention to provide a kind of composite polarizing plates, improve the bending property and phase of display
The adhesion property of potential difference interlayer.
Further, it is another object of the present invention to provide a kind of composite polarizing plate, because compound phase potential difference layer rigidity and
Bending property improves and shows excellent light leakage property.
Further, it shows and sets it is a further object to provide a kind of image comprising composite polarizing plate above-mentioned
It is standby.
The above-mentioned purpose of the present invention will be realized by following properties：
(1) a kind of composite polarizing plate, it includes：Polarizer (polarizer)；And it is configured at least the one of above-mentioned polarizer
Face and by first phase difference layer, light curable adhesive layer and second phase difference layer according to stacking gradually in the side of above-mentioned polarizer
The compound phase potential difference layer (composite retardation layer) that formula is constituted, wherein in the range of 20 DEG C to 90 DEG C
The rigidity for stating compound phase potential difference layer has -514 to -275 slope relative to temperature.
(2) as above-mentioned (1) composite polarizing plate, wherein above-mentioned first phase difference layer be the phase separation layers of λ/2, above-mentioned second
Phase separation layer is the phase separation layers of λ/4.
(3) such as the composite polarizing plate of above-mentioned (1), wherein the light curable bonding agent packet of above-mentioned light curable adhesive layer
Containing alicyclic epoxide compound and straight-chain aliphatic epoxide.
(4) if the composite polarizing plate of above-mentioned (3) is comprising above-mentioned alicyclic in above-mentioned light curable bonding agent
The weight ratio of epoxide and above-mentioned straight-chain aliphatic epoxide is 1:1.5 to 4.
(5) such as the composite polarizing plate of above-mentioned (3), wherein above-mentioned alicyclic epoxide compound is 3,4- epoxycyclohexyl first
Base 3,4- epoxycyclohexane carboxylates (3,4-Epoxycyclohexylmethyl3,4-
epoxycyclohexanecarboxylate)。
(6) such as the composite polarizing plate of above-mentioned (3), wherein above-mentioned straight-chain aliphatic epoxide is selected from by new penta 2
Alcohol diglycidyl ether, 1,2,7,8- diepoxyoctanes, 1,4- butanediol diglycidyl ethers, 2- ethylhexyl glycidyls
At least one of the group of ether, 1,2- epoxy -9- decene and 2,3- epoxies -1- (1- ethoxy ethoxies) propane composition.
(7) such as the composite polarizing plate of above-mentioned (1), wherein above-mentioned light curable adhesive layer has 0.01 μm to 5 μm of painting
Cover thickness.
(8) such as the composite polarizing plate of above-mentioned (1), wherein above-mentioned compound phase potential difference layer has 2 μm to 7 μm of thickness.
(9) such as the composite polarizing plate of above-mentioned (1), wherein above-mentioned polarizer includes light polarizing film or base material film and the base material
Polarisation coating on film.
(10) such as the composite polarizing plate of above-mentioned (1), wherein above-mentioned compound phase potential difference layer is configured in the one of above-mentioned polarizer
Face, and the another side of above-mentioned polarizer is bonded to protective film.
(11) a kind of image display, it includes the composite polarizing plates described in any one of above-mentioned (1) to (10).
Composite polarizing plate according to the present invention can improve the cementability between the bending property and phase separation layer of display
Matter.
In addition, composite polarizing plate according to the present invention, swollen caused by the rigidity improvement by compound phase potential difference layer due to lowering
Swollen rate and improve bending property, so as to show excellent light leakage property.
Further, composite polarizing plate according to the present invention, the process because being not necessarily to peel separation film in manufacturing process, thus
The ratio of defects of product can be reduced.
Further, the present invention can provide a kind of image display including composite polarizing plate above-mentioned.
Description of the drawings
The present invention purpose, feature and further advantage as above and other from part is shown in detail below will be brighter in conjunction with attached drawing
It is white to understand, in attached drawing：
Fig. 1 is the chart according to the slope of the rigidity of the embodiment of the present invention and comparative example.
Fig. 2 is the schematic section according to the composite polarizing plate of one embodiment of the present invention.
Specific implementation mode
The present invention discloses a kind of composite polarizing plate and the image display comprising the composite polarizing plate, above-mentioned compound polarisation
Plate includes：Polarizer；And be configured at above-mentioned polarizer at least one side and by first phase difference layer, light curable adhesive layer and
The compound phase potential difference layer that second phase difference layer is constituted in the way of stacking gradually in above-mentioned polarizer, wherein at 20 DEG C to 90 DEG C
In the range of above-mentioned compound phase potential difference layer rigidity relative to temperature have -514 to -275 slope.Therefore, composite polarizing plate
Adhesion property between bending property and phase separation layer with the display improved, and because of the rigidity of compound phase potential difference layer and
It is bent the improvement of property and shows excellent light leakage property.
Hereinafter, the specifically embodiment of the present invention will be described with reference to the drawings.But these embodiments are only example, this
Invention is not limited to this.
<Composite polarizing plate>
The composite polarizing plate of the present invention includes polarizer and is configured at the compound phase potential difference layer of at least one side of the polarizer.
Polarizer
Polarizer typically used as in correlative technology field can be used in polarizer, and type has no specifically limited.For example, partially
Light transmittance efficiency can be applied to polarizer in the form of a film by single light polarizing film itself, also can be by the polarisation that is formed on base material film
Coating is applied to polarizer with coating form.
Specifically, polarizer can be formed comprising polarizer by swelling, dyeing, crosslinking, stretching, washing and drying
Any polarizer obtained with the polarizer formation film of resin.Further, polarizer can be by coating on base material film
Composition containing polarizer formation resin is stretched, dyes, is crosslinked, washs and is dried to prepare polarizer stacked film
The stacked film and obtain.
Type for the polarizer formation resin in aforementioned light polarizing film or polarisation coating have no it is specifically limited, if its
Can by dichroism material such as iodine staining, may include such as polyvinyl alcohol resin, dehydration polyvinyl alcohol resin,
Dehydrochlorination polyvinyl alcohol resin, pet resin, ethylene-vinyl acetate copolymer resin, ethylene-
Vinyl alcohol copolymer resin, celluosic resin and/or their partly-hydrolysed resin etc..In these resins, just enhance plane
The excellent effect of the uniformity of middle degree of polarization and for the dyeing affinity of dichroism material iodine is excellent etc., preferably makes
Use polyvinyl alcohol resin as polarizer formation resin.
The thickness of polarizer formation film or as coat the thickness of film of the polarizer formation obtained by resin have no it is special
Limitation.For example, polarizer formation film can contain polarizer with 10 μm to 150 μm of thickness by being coated on base material film
The composition of formation resin is formed by polarisation coating can be with 3 μm to 30 μm of thickness.
In addition, composite polarizing plate according to the embodiment of the present invention also can be used and pass through other than aforementioned polarizer
Coating liquid crystal and the optical film of polarized light property can be showed.
Compound phase potential difference layer
Compound phase potential difference layer according to the present invention is configured in at least one side of above-mentioned polarizer.Compound phase potential difference layer with
Polarizer can be joined directly to each other, and can be further comprised other layers between them, can be further comprised protective layer.
In addition, compound phase potential difference layer according to the present invention is by first phase difference layer, light curable adhesive layer and the second phase
Potential difference layer is constituted in the way of stacking gradually in above-mentioned polarizer.
The rigidity of compound phase potential difference layer according to the present invention has -514 in the range of 20 DEG C to 90 DEG C relative to temperature
To -275 slope.
As described above, first phase difference layer and second phase difference layer are used in OLED display, when being used in flexibility
When display, it is desirable that excellent bending property.
The laminated body of previous first phase difference layer and second phase difference layer have because be bent property it is insufficient due to cause to roll over
Trace, and there is the problem of splitting, defective appearance or deformation, crackle.
The present invention is connect first phase difference layer and second phase difference layer by light curable bonding agent by importing each other as a result,
Compound phase potential difference layer made of conjunction, and provide within the specific range of temperatures of compound phase potential difference layer with -514 to -275 it is rigid
The compound phase potential difference layer of slope is spent, thus solves foregoing problems.
In addition, when first phase difference layer and second phase difference layer are engaged with each other using pressure adhesive, demoulding is used
Film (carrier film).In this case, due to removing the electrostatic generated during mold release film in manufacturing process, in fact it could happen that import
Foreign matter and cause unqualified.
However, light curable adhesive layer is used according to compound phase potential difference layer according to the present invention, so as to reduce production
The ratio of defects of product, reason are not needing to the processing of stripping mold release film in process.Further, since light curable bonding agent is
Just can also have abundant adhesive strength, therefore the thickness that composite polarizing plate can reduce when being formed as thinner than pressure-sensitive adhesive layer
Degree is formed, thus improves bending property.
In addition, composition and content by controlling light curable adhesive layer according to the present invention, it is strong can to control bonding
The size of degree, heat resistance, durability and rigidity relative to the slope of temperature.
If stiffness slope is less than -514, there is folding line, and splitting, defective appearance or deformation occur.If rigidity
Slope is more than -275, then cracked.
The thickness of compound phase potential difference layer has no specifically limited, can be such as 2 μm to 7 μm.In this case, phase difference
The bending property and adhesion property of interlayer can be improved.Preferably, compound phase potential difference layer according to the present invention is designed at 20 DEG C
Compound phase potential difference layer has -514 to -275 stiffness slope within the temperature range of to 90 DEG C.
Compound phase potential difference layer according to the present invention can be engaged to polarizer by using known any method, example
Such as, it can be used pressure adhesive or bonding agent, it is preferable to use bonding agent.
Phase separation layer
First phase difference layer and second phase difference layer according to the present invention by light curable adhesive layer by being inserted in it
Between and engage.
Known phase separation layer in correlative technology field respectively can be used in first phase difference layer and second phase difference layer.Example
Such as, first phase difference layer and second phase difference layer can be stretching polymer film or non-stretching polymer film or anti-by curing
Answering property liquid-crystal compounds and the liquid crystal layer obtained.Specifically, first phase difference layer can be the phase separation layers of λ/2, second phase
Poor layer can be the phase separation layers of λ/4.
For example, when first phase difference layer and second phase difference layer are fabricated to liquid crystal layer, reactive liquid crystalline can be used
Close object (RM) as have photoanisotropy and because light or due to heat cross linkable liquid crystal layer, it may include information display
10 [1] (Information Display) (recent research trend (Recent Research Trend of reactive liquid crystalline monomer
In Reactive Liquid Crystal Monomer (RM))) described in compound.
Liquid-crystal compounds can be coated on base material film to form liquid crystal film, and painting method has no specifically limited, it may include
Spin-coating method, rolling method, die coating method, intaglio printing cladding process etc..Preferably, the type of solvent is determined according to painting method
And dosage.
The type of base material film has no specifically limited, it may include any one of protective film being hereinafter described.
Light curable adhesive layer
Light curable adhesive layer according to the present invention uses the first phase difference layer and the second phase in compound phase potential difference layer
Potential difference layer needs the part engaged.
If needed for having, light curable adhesive layer according to the present invention can further be applied to polarizer and protectiveness substrate
Between or protectiveness substrate and compound phase potential difference interlayer.
Light curable adhesive layer according to the present invention can be by that can carry out the light curable bonding agent of light curable bonding
Composition is made.Herein, light curable adhesive composite can without specifically limited be used, as long as it can carry out light curable
Bonding.For example, light curable adhesive composite may include photopolymerizable compound, photoinitiator etc..
Photopolymerizable compound can be optical free radical polymerizable compound or light cationic polymerizable compound.These are changed
Object is closed to can be used alone or be used in combination of two or more.
As the example of optical free radical polymerizable compound, the of KR published patent the 2015-0017446th can be used
[0100] the optical free radical polymerizable compound enumerated in section.
In addition, can be used the polymer by monomer polymerization above-mentioned as optical free radical polymerizable compound.
As the example of light cationic polymerizable compound, the of KR published patent the 2015-0017446th can be used
[0101] the light cationic polymerizable compound enumerated in section.
Preferably, according to the embodiment of the present invention, from the aspect of control adhesion property and rigidity, light curable bonding
Agent composition includes alicyclic epoxide compound and straight-chain aliphatic epoxide.
By controlling the weight ratio of alicyclic epoxide compound and the content of straight-chain aliphatic epoxide, can be easier
Improve the cementability and control rigidity of first phase difference layer and second phase difference interlayer in ground.From this viewpoint, preferably alicyclic
The weight ratio of epoxide and straight-chain aliphatic epoxide is 1:1.5 to 1:4 range, more preferably selects 1:2 to 1:4
Range.Within aforementioned range, due to by the adhesion property between improved phase separation layer to which splitting and rigidity change
It is kind, therefore be bent property and improve, therefore can have excellent light leakage property.
In this case, alicyclic epoxide compound and straight-chain aliphatic epoxide have no specifically limited, for example,
Alicyclic epoxide compound can be 3,4- epoxycyclohexyl-methyl 3,4- epoxycyclohexane carboxylates (3,4-
Epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate)。
Straight-chain aliphatic epoxide can be selected from pungent by neopentylglycol diglycidyl ether, 1,2,7,8- diepoxies
Alkane, 1,4- butanediol diglycidyl ethers, 2- hexyl glycidyl ethers, 1,2- epoxy -9- decene and 2,3- epoxies -1-
At least one of the group of (1- ethoxy ethoxies) propane composition.
In addition, if desired, alicyclic epoxide compound and straight-chain aliphatic epoxide can further comprise as above retouching
The optical free radical polymerizable compound and light cationic polymerizable compound stated.Preferably, the content of these polymerizable compounds
In 1 weight % to the range of 20% weight %.
Further, viscous about the example of light cationic polymerizable compound, the content of Photoepolymerizationinitiater initiater and light curable
The painting method for connecing agent composition uses [0102] to [0104] section in KR published patent the 2015-0017446th
Description.
The coating thickness of light curable adhesive composite have no it is specifically limited, for example, light curable adhesive composite
It is coated with 0.01 μm to 5 μm, preferably with 0.5 μm to 3 μm of thickness.
If the coating thickness of light curable adhesive composite is more than 5 μm, although can be applied to for typical displays
Polarizer, but be likely to occur crackle when assessing the flexural property of flexible display, in protectiveness substrate.
Protective film
The engageable at least one side to polarizer of protective film.For example, when compound phase potential difference layer is configured at the one of polarizer
When face, the engageable another side to polarizer of protective film.In addition, protective film is configured between compound phase potential difference layer and polarizer,
But it is non-to be limited by this.
Example about protective film and its description use [0111] in KR published patent the 2015-0017446th
To the description of [0114] section.
In addition, as thermosetting resin or UV curable resin, aryl resin, carbamate resins, propylene can be used
Acid-carbamate resins, epoxy resin, organic siliconresin etc. form cured layer, non-to be only limitted to certain films, it is contemplated that viscous
Connecing property or durability and properly use in resin as above to obtain any one.
The thickness of protective film has no specifically limited, can be such as 10 μm to 200 μm, preferably 10 μm to 150 μm.Work as guarantor
When cuticula has 10 μm to 200 μm of thickness, if polarizer protection film layer is laminated on the two sides of polarizer, each protective film can have
The thickness being same or different to each other.
<Image display>
Further, composite polarizing plate of the invention can by with other common components in conjunction with by be usefully applied to figure
As showing equipment.
Such as typical liquid crystal can be used to show equipment for image display, in addition, usable electroluminescence display device, etc.
Gas ions show equipment, field-emission display device, OLED etc..When the composite polarizing plate of the present invention is applied to OLED, preferably will
Polarizer side is configured at viewable side.
Hereinafter, preferred embodiment is provided so that the present invention is more specifically described.However, the following example is only used for illustrating
The present invention, it is obvious that those skilled in the art can carry out various changes in scope of the invention and scope
Change and changes.Certainly, these variations and modification ought to be also included within the scope of appended claims.
Preparation example 1
Polyvinyl alcohol film (the PS of saponification degree with 75 μm of thickness, 2,400 average degree of polymerization and 99.9% or more
7500, Kuraray (Kuraray) company) it is impregnated in 30 DEG C of water (deionized water) and is allowed to be swollen for 2 minutes.Thereafter, by the film
It is allowed to dye within 4 minutes in 30 DEG C of dippings in the dyeing liquor of the potassium iodide of iodine and 2 weight % containing 3.5mmol/L.It then, will be through
The film of processing further rubs in the boric acid of potassium iodide, 3.7 weight % containing 2 weight % and relative to 1 mole of potassium iodide for 4.5
It is allowed to be crosslinked within 2 minutes in 50 DEG C of dippings in the crosslinked fluid of the lithium chloride of your ratio.In each swelling/dyeing/crosslinking/carrying out washing treatment phase
Between, polyvinyl alcohol film is stretched to 5.5 times of accumulation draw ratio and prepares polarizer.
Preparation example 2
Noblen FLX80E4 resins (sumitomo chemical company (Sumitomo Chemical Co., Ltd.)) are placed in
The two sides of the resin layer (sumitomo chemical company) of Noblen W151 carries out coextruded profiled and makes using Multi layer extrusion molding machine
The standby base material film with three-decker, then, by pva powder Z-200 (Japan synthesis chemical company (Japan
Synthetic Chemical Co., Ltd.)) it is heated in 90 DEG C to prepare 3 weight % aqueous solutions.Later, crosslinking agent will be used as
Sumirejin 650 (Tian Gang chemical companies (Taoka Chemical Co., Ltd.)) with the polyethylene relative to 2 weight %
Alcohol powder obtains prime coat formation coating liquid for the ratio mixing of 1 weight %, and by pva powder PVA 124
(Kuraray Corporation), to obtain 8 weight % aqueous solutions, so prepares polyvinyl alcohol resin formation coating liquid in 90 DEG C of heating.It connects
It, above-mentioned multi-layer substrate film is made to receive sided corona treatment, prime coat is coated on through sided corona treatment using micro- gravure coater
Face, and in 80 DEG C dry 3 minutes to form 0.2 μm of prime coat, then, polyvinylalcohol coats liquid is continuously coated on bottom
On enamelled coating and is dried 5 minutes in 90 DEG C and form the polyvinyl alcohol resin layer with 10 μ m thicks.
The multilayer film of gained is stretched 5.8 times using 160 DEG C of hot-rolling, is then impregnated in 1 minute and leaching in 60 DEG C of pure water
Stain is allowed to dye for 3 minutes in iodine and potassium iodide dyeing liquor.Then, above-mentioned multilayer film is impregnated in 75 DEG C of boronic acid containings and potassium iodide
Crosslinked fluid in 10 minutes, later with 10 DEG C of pure waters and in 80 DEG C dry 5 minutes to prepare the poly- second with 3.8 μ m thicks
Enol polarizer.
Embodiment 1
(A) preparation of light curable adhesive composite
By CEL 2021P (Daicel companies), 80 weights of being used as alicyclic epoxide compound that mix 20 weight %
Measure the neopentylglycol diglycidyl ether (Aldrich) as straight-chain aliphatic epoxide of %, the work of 4 weight %
For the CPI-110A (San-Apro companies) of cation light initiator, to prepare adhesive composite.In this case, fat
The weight ratio of ring race epoxide and straight-chain aliphatic epoxide is 1:4.
(B) preparation of compound phase potential difference layer
The light curable adhesive composite of preparation is engaged in a manner of forming 3 μm of thickness the phase separation layers of λ/2 with
Between the phase separation layers of λ/4, and use high-pressure sodium lamp (UVA, accumulated light 500mJ/cm2) UV solidifications are carried out, it thus prepares compound
Phase separation layer.
(C) preparation of polarizer
Tri acetyl cellulose film (Fuji (Fuji) company) is bonded to by applying aqueous adhesive and making it dry
The one side of the polarizer prepared in preparation example 1, and the phase separation layers of the λ of compound phase potential difference layer/2 side is glued using acrylic pressure sensitive
It connects agent and is bonded to its another side.The acrylic pressure sensitive bonding agent of membranous type is further bonded to the phase differences of λ as constructed as above/4
Layer, thus prepares polarizer.
In fig. 2, the sectional view of composite polarizing plate is schematically illustrated.
Embodiment 2
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
Mix the conduct straight chain of the CEL 2021P (Daicel companies) and 70 weight % as alicyclic epoxide compound of 30 weight %
The neopentylglycol diglycidyl ether (Aldrich) of aliphatic epoxy compound.In this case, alicyclic epoxide
The weight ratio for closing object and straight-chain aliphatic epoxide is 1:2.3.
Embodiment 3
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The CEL 2021P (Daicel companies) as alicyclic epoxide compound of 20 weight % are mixed, and as straight-chain aliphatic ring
The 1,2,7,8- diepoxyoctanes of the neopentylglycol diglycidyl ether and 10% weight % of 70 weight % of oxygen compound
(Aldrich).In this case, the weight ratio of alicyclic epoxide compound and straight-chain aliphatic epoxide is 1:
4。
Embodiment 4
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The conduct for mixing the CEL 2021P (Daicel companies) and 80% weight % as alicyclic epoxide compound of 20 weight % is straight
The 1,2,7,8- diepoxyoctanes (Aldrich) of chain fatty race epoxide.In this case, alicyclic epoxide
The weight ratio for closing object and straight-chain aliphatic epoxide is 1:4.
Embodiment 5
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The conduct for mixing the CEL 2021P (Daicel companies) and 80% weight % as alicyclic epoxide compound of 20 weight % is straight
The 1,4- butanediol diglycidyl ethers (Aldrich) of chain fatty race epoxide.In this case, aliphatic ring
The weight ratio of oxygen compound and straight-chain aliphatic epoxide is 1:4.
Embodiment 6
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The conduct for mixing the CEL 2021P (Daicel companies) and 80% weight % as alicyclic epoxide compound of 20 weight % is straight
The 2- hexyl glycidyl ethers (Aldrich) of chain fatty race epoxide.In this case, alicyclic epoxy
Compound and the weight ratio of straight-chain aliphatic epoxide are 1:4.
Embodiment 7
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The conduct for mixing the CEL 2021P (Daicel companies) and 80% weight % as alicyclic epoxide compound of 20 weight % is straight
1,2- epoxy -9- the decene (Aldrich) of chain fatty race epoxide.In this case, alicyclic epoxy compound
The weight ratio of object and straight-chain aliphatic epoxide is 1:4.
Embodiment 8
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The conduct for mixing the CEL 2021P (Daicel companies) and 80% weight % as alicyclic epoxide compound of 20 weight % is straight
2,3- epoxies -1- (1- ethoxy ethoxies) propane (Aldrich) of chain fatty race epoxide.In such situation
Under, the weight ratio of alicyclic epoxide compound and straight-chain aliphatic epoxide is 1:4.
Embodiment 9
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The CEL 2021P (Daicel companies) as alicyclic epoxide compound of 20 weight % are mixed, 70 weight %'s is used as straight chain
The neopentylglycol diglycidyl ether (Aldrich) of aliphatic epoxy compound and the conduct aromatic ring of 10 weight %
The resorcinolformaldehyde resin (Aldrich) of oxygen compound.In this case, alicyclic epoxide compound with it is straight
The weight ratio of chain fatty race epoxide is 1:3.5.
Embodiment 10
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The CEL 2021P (Daicel companies) as alicyclic epoxide compound of 20 weight % are mixed, 70 weight %'s is used as straight chain
The neopentylglycol diglycidyl ether (Aldrich) of aliphatic epoxy compound, 10 weight %'s is used as aromatic series propylene
The glycidyl methacrylate (Aldrich) of acid ester monomer and 4 weight % as free radical photo-initiation
Irg 184 (Siba companies).In this case, the weight ratio of alicyclic epoxide compound and straight-chain aliphatic epoxide
It is 1:3.5.
Embodiment 11
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The CEL 2021P (Daicel companies) as alicyclic epoxide compound of 20 weight % are mixed, 70 weight %'s is used as straight chain
The neopentylglycol diglycidyl ether (Aldrich) of aliphatic epoxy compound, the conduct aromatic epoxies of 10 weight %
The resorcinolformaldehyde resin (Aldrich) of compound, 10 weight % as aromatic acrylates monomer
184 (the Siba of Irg as free radical photo-initiation of glycidyl methacrylate (Aldrich) and 4 weight %
Company).In this case, the weight ratio of alicyclic epoxide compound and straight-chain aliphatic epoxide is 1:3.
Embodiment 12
Polarizer is manufactured according to same processes as described in Example 1, but bonding agent has 5 μm of thickness.
Embodiment 13
Polarizer is manufactured according to same processes as described in Example 1, but bonding agent has 1 μm of thickness.
Embodiment 14
Polarizer is manufactured according to same processes as described in Example 1, but is made using the polarizer prepared in preparation example 2
For polarizer, and tri acetyl cellulose film (company of Fuji) is bonded in two faces of polarizer and is formed with polyvinyl alcohol resin
Side.
Comparative example 1
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
Mix the conduct straight chain of the CEL 2021P (Daicel companies) and 90 weight % as alicyclic epoxide compound of 10 weight %
The neopentylglycol diglycidyl ether (Aldrich) of aliphatic epoxy compound.In this case, alicyclic epoxide
The weight ratio for closing object and straight-chain aliphatic epoxide is 1:9.
Comparative example 2
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
Mix the conduct straight chain of the CEL 2021P (Daicel companies) and 30 weight % as alicyclic epoxide compound of 70 weight %
The neopentylglycol diglycidyl ether (Aldrich) of aliphatic epoxy compound.In this case, alicyclic epoxide
The weight ratio for closing object and straight-chain aliphatic epoxide is 1:0.4.
Comparative example 3
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
The CEL 2021P (Daicel companies) as alicyclic epoxide compound of 70 weight % are mixed, and as straight-chain aliphatic ring
The 1,2,7,8- diepoxyoctanes of the neopentylglycol diglycidyl ether and 10% weight % of 20 weight % of oxygen compound
(Aldrich).In this case, the weight ratio of alicyclic epoxide compound and straight-chain aliphatic epoxide is 1:
0.4。
Comparative example 4
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
Mix the conduct straight chain of the CEL 2021P (Daicel companies) and 40 weight % as alicyclic epoxide compound of 60 weight %
The neopentylglycol diglycidyl ether (Aldrich) of aliphatic epoxy compound.In this case, alicyclic epoxide
The weight ratio for closing object and straight-chain aliphatic epoxide is 1:0.7.
Comparative example 5
Polarizer is manufactured according to same processes as described in Example 1, but the preparation method of adhesive composite is as follows：
Mix the conduct straight chain of the CEL 2021P (Daicel companies) and 50 weight % as alicyclic epoxide compound of 50 weight %
The neopentylglycol diglycidyl ether (Aldrich) of aliphatic epoxy compound.In this case, alicyclic epoxide
The weight ratio for closing object and straight-chain aliphatic epoxide is 1:1.
Comparative example 6
With the butyl acrylate of 70 weight %, the acroleic acid polymerization third of the methyl acrylate of 20 weight % and 10 weight %
Olefin(e) acid based copolymer, and by polyfunctional acrylate's monomer of 15 weight %, 0.3 weight % be used as Photoepolymerizationinitiater initiater
Irgacure 500 (Qi Ba chemical companies (Ciba Chemical Co.)), as the Colonate of isocyanate crosslinking
The work of L (Japanese polyurethane industrial group (Nippon Polyurethane Industry Co.)) and 0.1 weight %
(Xin Yue chemical companies (Shinetsu Chemical Co.)) for the KBM-403 of silane coupling agent is added to above-mentioned acrylic acid
Thus based copolymer prepares acrylic pressure sensitive adhesive composite.The acrylic pressure sensitive adhesive composite of preparation is applied
The seperation film with 80 μm of thickness and drying are added to, to prepare the acrylic pressure sensitive adhesive layer with 5 μm of thickness.
Polarizer is manufactured according to same processes as described in Example 1, but repeatedly by the pressure-sensitive adhesive layer of preparation
It is transferred to the phase separation layers of λ/2 of compound phase potential difference layer and forms the acrylic pressure sensitive adhesive layer with 20 μm of thickness, and
The phase separation layers of λ/4 are engaged on it.
Comparative example 7
Polarizer is manufactured according to the same processes as described in comparative example 6, but acrylic pressure sensitive adhesive layer has 5 μm
Thickness.
Comparative example 8
Polarizer is manufactured according to same processes as described in Example 1, but adhesive layer has 7 μm of thickness.
The measurement of stiffness slope
The compound phase potential difference layer prepared in Examples and Comparative Examples is cut into 2mm × 50mm sizes, then by by its
Be heated to 80 DEG C from 30 DEG C, using dynamic thermal characteristics analyzer (Q-800, TA instrument company) according to longitudinal direction with the meter of 15mm away from
From assessment rigidity.At this point, selecting 30 DEG C, 50 DEG C and 80 DEG C of rigidity to measure the slope of rigidity.The slope of rigidity is from chart
It obtains, wherein X-axis indicates that temperature (DEG C), Y-axis indicate the rigidity size relative to each temperature, and the slope of rigidity is according to linear
Regression analysis calculates.The stiffness slope of embodiment 1,12 and 13 and comparative example 7 is shown in temperature-rigidity chart of Fig. 1.
[table 1]
Hereinafter, the content of the composition prepared in embodiment 1 to 14 is indicated with weight %.
[table 2]
Hereinafter, the content of the composition prepared in comparative example 1 to 8 is indicated with weight %.
Assessment test
(1) assessment of cross cutting (Cross Cut)
According to the interlayer zygosity of the composite polarizing plate prepared in the standard testing Examples and Comparative Examples of ASTM D 3359
(whether there is splitting).First, 11 cuttings are engraved according to longitudinal and transverse direction with the intervals 1mm on the surface of composite polarizing plate
Line, to form 1mm2100 grid of area.Then, adhesive tape is attached at surface and takes adhesive tape off from the surface, it will
The process in triplicate, counts average stripping number, is cut according to following criterion evaluation cross.Assessment result is shown in following table 3
And table 4.
OK：Stripping number 0 is less than 10
NG：Stripping number 10 or more
(2) assessment of light leakage
The polarizer of preparation is bonded to glass using the pressure adhesive of membranous type, and silver-colored reflecting plate is attached at the glass
The face opposite with the one side for being bonded to polarizer, the glass is then directed into 85 DEG C of baking oven 24 hours and is taken out.Later,
The light leakage for observing polarizer in this reflection mode in darkroom, according to following criterion evaluation.Assessment result is shown in following table 3 and table 4.
○：Do not occur light leakage
X：There is light leakage
(3) assessment being bent
Using crooked test machine (MIT assessments), carried out instead with the sample with 10mm width, 150mm length and 3mm radiuses
Multiple crooked test.During up to 50,000 alternating bendings are tested, according to following standard, observation and assessment film are cracked
Degree and splitting.Assessment result is shown in following table 3 and table 4.
[crackle]
○：It is not cracked
Δ：There is the crackle that size is less than 2mm in protectiveness base ends
X：The whole face of protectiveness substrate is cracked
[splitting]
○：Do not occur splitting
Δ：Occur that there is strip length 2mm strippings below in protectiveness substrate/bonding agent protectiveness base ends
X：It is more than the stripping of 2mm to have strip length in protectiveness substrate/bonding agent protectiveness base ends appearance
[table 3]
[table 4]
Reference table 3 and table 4, it is known that the compound phase potential difference layer of whole embodiments is cut, in cross in light leakage and bending assessment
Show excellent assessment result, but the part compound phase potential difference layer of comparative example in cross cutting, light leakage and is bent in assessment not
With excellent assessment result.
Claims (11)
1. a kind of composite polarizing plate, it includes：
Polarizer；And
Compound phase potential difference layer is configured at at least one side of the polarizer, and by first phase difference layer, light curable bonding agent
Layer and second phase difference layer are constituted in the way of stacking gradually in the polarizer,
Wherein, the rigidity of the compound phase potential difference layer has -514 to -275 relative to temperature in the range of 20 DEG C to 90 DEG C
Slope.
2. composite polarizing plate according to claim 1, wherein the first phase difference layer is the phase separation layers of λ/2, described the
Two-phase potential difference layer is the phase separation layers of λ/4.
3. composite polarizing plate according to claim 1, wherein the light curable bonding agent of the light curable adhesive layer
Including alicyclic epoxide compound and straight-chain aliphatic epoxide.
4. composite polarizing plate according to claim 3 is comprising the alicyclic ring in the light curable bonding agent
The weight ratio of race's epoxide and the straight-chain aliphatic epoxide is 1:1.5 to 4.
5. composite polarizing plate according to claim 3, wherein the alicyclic epoxide compound is 3,4- epoxycyclohexyls
Methyl 3,4- epoxycyclohexane carboxylates.
6. composite polarizing plate according to claim 3, wherein the straight-chain aliphatic epoxide is selected from by new penta
Hexanediol diglycidyl ether, 1,2,7,8- diepoxyoctanes, 1,4- butanediol diglycidyl ethers, 2- ethylhexyl glycidyls
At least one of the group of ether, 1,2- epoxy -9- decene and 2,3- epoxies -1- (1- ethoxy ethoxies) propane composition.
7. composite polarizing plate according to claim 1, wherein the light curable adhesive layer has 0.01 μm to 5 μm
Coating thickness.
8. composite polarizing plate according to claim 1, wherein the compound phase potential difference layer has 2 μm to 7 μm of thickness.
9. composite polarizing plate according to claim 1, wherein the polarizer includes light polarizing film or base material film and should
Polarisation coating on base material film.
10. composite polarizing plate according to claim 1, wherein the compound phase potential difference layer is configured in the polarizer
One side, and the another side of the polarizer is bonded to protective film.
11. a kind of image display, it includes the composite polarizing plates described in any one of claims 1 to 10.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20150175846 | 2015-12-10 | ||
| KR10-2015-0175846 | 2015-12-10 | ||
| KR1020160129846A KR101783210B1 (en) | 2015-12-10 | 2016-10-07 | Composite polarizing plate and display device comprising the same |
| KR10-2016-0129846 | 2016-10-07 | ||
| PCT/KR2016/014231 WO2017099449A1 (en) | 2015-12-10 | 2016-12-06 | Complex polarizing plate and image display device comprising same |
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| CN108291995A true CN108291995A (en) | 2018-07-17 |
| CN108291995B CN108291995B (en) | 2020-11-03 |
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|---|---|
| KR (1) | KR101783210B1 (en) |
| CN (1) | CN108291995B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782478A (en) * | 2019-03-21 | 2019-05-21 | 南京汉旗新材料股份有限公司 | A kind of TN/STN polarizing film form and aspect regulation method |
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| KR101985964B1 (en) | 2017-09-11 | 2019-06-04 | 현대건설(주) | Method of analysis of structure suitability using Variable Correlation of Tall Buildings |
| JP7348719B2 (en) * | 2017-11-10 | 2023-09-21 | 住友化学株式会社 | Composite retardation plate, optical laminate, and image display device |
| JP7046127B6 (en) * | 2020-07-28 | 2023-12-18 | 日東電工株式会社 | Image display device including an optical laminate and a polarizing plate with a retardation layer of the optical laminate |
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| Publication number | Publication date |
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| KR101783210B1 (en) | 2017-09-29 |
| CN108291995B (en) | 2020-11-03 |
| TWI715683B (en) | 2021-01-11 |
| KR20170069136A (en) | 2017-06-20 |
| TW201732328A (en) | 2017-09-16 |
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