CN105473679A - Adhesive composition and composite polarizing plate using same - Google Patents
Adhesive composition and composite polarizing plate using same Download PDFInfo
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- CN105473679A CN105473679A CN201480043880.9A CN201480043880A CN105473679A CN 105473679 A CN105473679 A CN 105473679A CN 201480043880 A CN201480043880 A CN 201480043880A CN 105473679 A CN105473679 A CN 105473679A
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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
- C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
- C09J129/02—Homopolymers or copolymers of unsaturated alcohols
- C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- 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
-
- 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
-
- 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
-
- 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
-
- 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
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133631—Birefringent elements, e.g. for optical compensation with a spatial distribution of the retardation value
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention relates to an adhesive composition and a composite polarizing plate using same, more specifically to an adhesive composition and a composite polarizing plate using same in which the adhesive composition comprises a cross-linking agent and a water-soluble resin containing polyvinyl resin having a benzene ring on a side chain, thereby markedly improving the adhesiveness between a polarizer and a patterned retardation layer when utilized in producing a composite polarizing plate by adhering the polarizer and the patterned retardation layer, and contributing to improving heat-resistance and moist-heat resistance as well as to facilitating adhesion to a display panel and the like when applied to image displaying apparatuses.
Description
Technical field
The present invention relates to binder composition and utilize the composite polarizing plate of said composition.
Background technology
In general, the phase retardation film generally including patterning for the display equipment obtaining stereo-picture of such as liquid crystal display.The phase retardation film of this patterning has such technical configuration: the optical axis of different area of the pattern is formed on the direction that is different from each other, with in the left eye that different images is sent to the beholder wearing polaroid glasses and right eye, thus present three-dimensional (that is, three-dimensional) image.
Usually then liquid crystal being put on this oriented layer to obtain orientation characteristic by forming oriented layer on the glass substrate, preparing the phase retardation film of patterning.Photoactivated liquid crystal material is oriented in oriented layer, is then cross-linked by the optical radiation of such as UV-light, to form polymer liquid epitaxial.According to the differently-oriented directivity of the liquid crystal of the surface orientation with oriented layer, the polymer liquid epitaxial so formed can play a part to postpone pattern.
The phase retardation film of patterning adheres to a face of Polarizer usually by binding agent or tackiness agent, and in recent years, is adhered to a face of polyvinyl alcohol polarizer, to reduce thickness and the weight of display equipment.
When adhesive power between the phase retardation film of this patterning and Polarizer or polarizer dies down, process in the fabrication process or can deform between period of use.And, when exposing for a long time under hot and humid conditions, peeling can be related to or push the appearance of (thrust) phenomenon.In addition, typical polyvinyl compound polarizer can shrink in the stretching direction, therefore relates to different phase differential in the position of phase retardation film, conversely, causes the degeneration of 3D stereoeffect.
Therefore, still need to develop the tackiness agent that one has the improvement of the adhesive power of various performance (such as hot water resistance, humidity resistance etc.) and excellence.
Korean Patent discloses No. 2013-0028881 and discloses a kind of preparation method of phase delay device of film patterning, the phase delay device of film patterning and comprise the Polarizer of phase delay device and the image display of this film patterning.
[prior art document]
[patent documentation]
(patent documentation 1) Korean Patent discloses No. 2013-0028881
Summary of the invention
Technical problem
Therefore, the object of this invention is to provide a kind of binder composition, when this binder composition be used to by polarizer is combined with the phase separation layer of patterning manufacture composite polarizing plate time, this binder composition can improve the adhesive power between polarizer and the phase retardation film of patterning significantly.
Another object of the present invention is to provide a kind of composite polarizing plate manufactured by utilizing this binder composition to carry out bonding.
Technique means
1. a binder composition, comprising: water soluble resin, and described water soluble resin is included in the polyvinyl alcohol resin that side chain has phenyl ring; And linking agent.
2. the composition according to above-mentioned 1, wherein, the hydroxyl of described polyvinyl alcohol resin is modified into the substituting group containing phenyl ring.
3. the composition according to above-mentioned 2, wherein, described substituting group be by halogen, hydroxyl, carboxyl, amino, nitro, carbonatoms be 1 to 12 alkyl or carbonatoms be 6 to 8 the benzoyloxy that replaces of aryl not by halogen, hydroxyl, carboxyl, amino, nitro, carbonatoms be 1 to 12 alkyl or carbonatoms be 6 to 8 the benzoyloxy that replaces of aryl.
4. the composition according to above-mentioned 2, wherein, the scope from described hydroxyl to the described substituent modification degree containing phenyl ring is 10% to 30%.
5. the composition according to above-mentioned 1, wherein, obtains the described polyvinyl alcohol resin at side chain with phenyl ring by the condensation of the acyl chlorides containing phenyl ring or acid anhydrides and polyvinyl alcohol resin.
6. the composition according to above-mentioned 1, wherein, relative to the gross weight of described water soluble resin, comprises the described polyvinyl alcohol resin at side chain with phenyl ring of the content being equal to or greater than 10 % by weight.
7. the composition according to above-mentioned 1, wherein, described linking agent is be selected from least one in the group that is made up of monoaldehyde, dialdehyde, amino-formaldehyde resins, glyoxylate, acetal compound, divalent metal, trivalent metal, tetravalent metal, metallo-chelate, oxazoline, trimeric cyanamide, ethylenimine and poly mineral acid.
8. the composition according to above-mentioned 1, wherein, according to the described water soluble resin of solids content relative to 100 weight parts, comprises the described linking agent of the content of 0.5 weight part to 20 weight part.
9. a composite polarizing plate, comprising: polarizer; And the phase separation layer of patterning, the phase separation layer of described patterning utilizes the binder composition according to any one of above-mentioned 1 to 8 to adhere to a face of described polarizer.
10. the Polarizer according to above-mentioned 9; wherein; described polarizer comprises the film with protective membrane function or the film with phase retardation film function, described in have protective membrane function film or described in there is phase retardation film function film adhered to the face contrary with the face of the phase separation layer being stained with described patterning of described polarizer.
11. Polarizers according to above-mentioned 9, wherein, the phase separation layer of described patterning comprises liquid crystal coatings, and described liquid crystal coatings contains the reactive liquid crystalline monomer with phenyl ring.
12. Polarizers according to above-mentioned 9, wherein, the phase separation layer of described patterning does not comprise oriented layer.
13. Polarizers according to above-mentioned 9, wherein, edge section is from described polarizer side towards the phase separation layer lateral bend of described patterning.
14. Polarizers according to above-mentioned 9, wherein, the center of gravity of described polarizer and the difference of altitude between the vertex of the position apart from described center of gravity 5cm are for being equal to or greater than 3mm.
15. Polarizers according to above-mentioned 9, wherein, the stripping strength between the phase separation layer of described polarizer and described patterning is for being equal to or greater than 2N/25mm.
16. 1 kinds of image displays, comprise the composite polarizing plate according to above-mentioned 9.
Beneficial effect
When by utilizing binder composition of the present invention to be combined with the phase separation layer of patterning by polarizer to manufacture composite polarizing plate, significantly improve the adhesive power between polarizer and the phase separation layer of patterning.
Undertaken by utilizing binder composition of the present invention bonding and the composite polarizing plate that manufactures has excellent thermotolerance and humidity resistance, even if thus also suppress peeling or pushed appearance under being exposed to hot and humid condition for a long time.
Undertaken by utilizing binder composition of the present invention bonding and the composite polarizing plate manufactured can have the 3D stereoeffect of polarizing properties and improvement simultaneously.
When the composite polarizing plate manufactured by utilizing binder composition of the present invention to carry out bonding is applied to image display, it easily can be bonded to display panel.
Accompanying drawing explanation
Fig. 1 illustrates the composite polarizing plate state at once after adhesion manufactured by utilizing binder composition of the present invention to carry out bonding, and another state that this composite polarizing plate is bending due to water absorbability.
Embodiment
The present invention discloses a kind of binder composition, comprising: water soluble resin, and this water soluble resin is included in the polyvinyl alcohol resin that side chain has phenyl ring; And linking agent, thus when by utilizing binder composition of the present invention to be combined with the phase separation layer of patterning by polarizer to manufacture composite polarizing plate, significantly improve the adhesive power between polarizer and the phase separation layer of patterning, and this binder composition has excellent thermotolerance and humidity resistance, and when this binder composition is applicable to image display and utilize the composite polarizing plate of this binder composition, it is easily bonded to display panel.
Below will be further described in more detail the present invention.
< binder composition >
Binder composition of the present invention can be the binder composition based on water comprising water soluble resin.
The polyvinyl alcohol resin that its side chain has phenyl ring can be included according to water soluble resin of the present invention.
When binder composition of the present invention is used to polarizer to be combined with the phase separation layer of patterning, thus when manufacturing composite polarizing plate, the polyvinyl alcohol resin having a phenyl ring at its side chain can improve the adhesive power between polarizer and the phase separation layer of patterning significantly.The reason of this result can be considered to because the phenyl ring existed in the liquid crystal coatings of the phase separation layer of above-mentioned resin and patterning reacts to carry out the interaction of π key.The adhesive power of this improvement can strengthen thermotolerance and humidity resistance.
In addition, can think, the hydroxyl in polyvinyl alcohol resin forms hydrogen bond with the surface being included in polarizer together with the polar group in liquid crystal coatings, thus improves adhesive power further.
The polyvinyl alcohol resin having a phenyl ring at its side chain according to the present invention has such structure: in the structure shown here, the hydroxyl of polyvinyl alcohol is modified into the substituting group containing phenyl ring.
This substituting group is not particularly limited, if its contain phenyl ring and can by such as halogen, hydroxyl, carboxyl, amino, nitro, have 1 to the alkyl of 12 carbon atoms or have 6 aryl to 8 carbon atoms replace or not by halogen, hydroxyl, carboxyl, amino, nitro, have 1 to the alkyl of 12 carbon atoms or have that 6 aryl to 8 carbon atoms replace benzoyloxy.
In polyvinyl alcohol resin according to the present invention, the substituent modification degree containing phenyl ring is become to be not particularly limited hydroxyl modification, but suitably can select in such scope: within the scope of this, resin solubleness does not in a solvent decline and improves adhesive power simultaneously, and modification degree can be such as 10% to 30%.If modification degree is less than 10%, then the effect improving the adhesive power of the phase separation layer to patterning can be inappreciable.Similarly, when modification degree is more than 30%, resin solubleness in a solvent declines, thus realizes the improvement of considerably less adhesive power.Above-mentioned modification degree can utilize the chemical shift of adjacent hydrogen to calculate during nucleus magnetic resonance (NMR) is measured.
Be not particularly limited for the preparation of the mean polymerisation degree at side chain with the polyvinyl alcohol resin of the polyvinyl alcohol resin of phenyl ring according to the present invention, but consider adhesive power, this mean polymerisation degree can be 100 to 5000, preferably 1000 to 4000.In addition, mean saponification degree can be 85mol.% to 100mol.%, preferred 90mol.% to 100mol.%.
According to of the present invention at side chain, there is the polyvinyl alcohol resin of phenyl ring can according to any method known in correlation technique, by polyvinyl alcohol resin and the compound containing phenyl ring are reacted to prepare.Such as, polyvinyl alcohol resin can be formed according to the polyvinyl alcohol resin at side chain with phenyl ring of the present invention with the acyl chlorides containing phenyl ring or acid anhydrides condensation.
Can also comprise usually with water soluble resin in the related according to water soluble resin of the present invention.
Water soluble resin is not particularly limited; but can comprise such as, partly-hydrolysed polyvinyl alcohol resin, fully saponified polyvinyl alcohol resin, carboxy-modified polyvinyl alcohol resin, acetoacetyl modified polyvinyl alcohol resin, methylol-modified polyvinyl alcohol resin, amino modified polyvinyl alcohol resin, water dispersible polyacrylate resin etc.
The content at side chain with the polyvinyl alcohol resin of phenyl ring according to the present invention is not particularly limited, as long as it can be enough to the performance presented desired by it, and can be such as 10 % by weight or more relative to the gross weight of water soluble resin.If its content is less than 10 % by weight, then the effect improving adhesive power can be inappreciable, therefore occurs the problem that such as weather resistance reduces.
Binder composition of the present invention can also comprise linking agent.
Linking agent is not particularly limited, but can comprise the linking agent for any routine in correlation technique.Such as, monoaldehyde can be used, such as formaldehyde, acetaldehyde, propionic aldehyde, butyraldehyde etc.; Dialdehyde, such as oxalic dialdehyde, mda, suceinic aldehyde, glutaraldehyde, maleic dialdehyde (maleindialdehyde), o-phthalaldehyde(OPA) etc.; Amino-formaldehyde resins, the condensation product, melamine methylol, methylolurea alkylide, melamine methylol alkylide, acetylguanamine, benzoguanamine etc. of such as methane amide and methylolurea; Glyoxylate, such as oxoethanoic acid metal-salt (metal comprises such as basic metal (such as lithium, sodium, potassium etc.), alkaline-earth metal (such as magnesium, calcium etc.), transition metal (such as titanium, zirconium, chromium, manganese, iron, cobalt, nickel, copper etc.), zinc, aluminium etc.), oxoethanoic acid amine salt (amine comprises such as ammonia, Monomethylamine, dimethylamine, Trimethylamine 99 etc.); Acetal compound, such as dimethoxy acetaldehyde, diethoxy acetaldehyde, dialkoxy acetaldehyde etc.; Divalent metal, such as magnesium, calcium, aluminium, iron, nickel etc.; Trivalent metal; Tetravalent metal; Metallo-chelate; Oxazoline; Trimeric cyanamide; Ethylenimine; Poly mineral acid, such as boric acid, phosphoric acid, sulfuric acid etc.; Etc..
The content of linking agent is not particularly limited, but such as according to the whole water soluble resins of solids content relative to 100 weight parts, the content of linking agent can be 0.5 % by weight to 20 % by weight.If the content of linking agent is in above scope, then the effect improving the adhesive power between polarizer and the phase separation layer of patterning can be splendid.
< composite polarizing plate >
In addition, the invention provides the composite polarizing plate utilizing above-mentioned binder composition to manufacture.
Composite polarizing plate of the present invention can be comprised polarizer and be adhered to the phase separation layer of patterning in a face of this polarizer by binder composition.
Because polarizer utilizes above-mentioned binder composition to be combined with the phase separation layer of patterning, therefore composite polarizing plate of the present invention can have high adhesive power.About this point, as mentioned above, adhesive composition layer can form hydrogen bond together with polarizer, carries out the interaction of π key together with the phase separation layer of patterning simultaneously.
Polarizer is not particularly limited, as long as it to be usually used in display field and can to make incident light polarization.Such as, can use by utilizing iodine or dichroic dye to be dyeed by the film based on polyvinyl alcohol (PVA), then stretch this dyeing film and the product manufactured in a desired direction.The film with protective membrane function or the other film with phase retardation film function can be adhered to the face contrary with the face of the phase separation layer being stained with patterning.
The configuration of the phase separation layer of patterning is not particularly limited, but can comprise any configuration be generally used in correlation technique.Such as, substrate, alignment films and liquid crystal coatings can be laminated formation laminate structure with this order.In addition, this structure can not comprise alignment films.
The phase separation layer of patterning can be adhered to allow liquid crystal coatings towards polarizer.
Substrate is unrestricted, as long as it is made up of the material of excellent properties of the consistence, isotropic nature etc. with the such as transparency, physical strength, thermostability, moistureproof character, phase differential.Such as, can use and be selected from by least one the substrate that following material makes: polyolefin resin, vibrin, celluosic resin, polycarbonate resin, acrylic resin, styrene resin, vinyl chloride resin, amide resins, imide resin, polyethersulfone resin, sulphone resin, polyether ethersulfone resin, polyether-ether-ketone resin, polyphenylene sulfide, vinyl alcohol resin, vinylidene resin, vinyl butyral resin, allylation resin (allyllateresin), polyformaldehyde resin and epoxy resin.
When the phase separation layer of patterning comprises oriented layer, by the composition for the formation of oriented layer being generally used for correlation technique being put on substrate to provide orientation character, then making coating formation pattern to have different differently-s oriented directivity, can oriented layer be formed.
There is provided the method for orientation character can comprise the orientation etc. of such as friction, light, the method forming pattern can comprise the multiple-exposure process utilizing photomask.But, provide the method for the method of orientation character and/or formation pattern to be not particularly limited.
Light for exposing is not particularly limited, but can comprise such as polarization ultraviolet radiation, with the ionic fluid of expected angle or plasma radiation, irradiation etc.Such as, the ultraviolet radiation of polarization is preferably used.
By being applied for the composition forming liquid crystal coatings, then make said composition be cross-linked, can form liquid crystal layer, said composition comprises reactive liquid crystalline monomer (RM), and is generally used for correlation technique.
RM is not particularly limited, but can comprise any monomer be generally used in correlation technique, and is preferably the monomer with phenyl ring.
When the phase separation layer of patterning does not comprise oriented layer, by the composition for the formation of liquid crystal coatings is applied to substrate but not oriented layer, then makes said composition expose to carry out pattern formation and orientation simultaneously, the phase separation layer of patterning can be formed.
In this case, the composition for the formation of liquid crystal coatings can also comprise any can by the compound of the UV-light orientation of polarization (polymkeric substance of the photopolymerizable of such as straight chain), to carry out orientation.
If the phase separation layer of patterning does not comprise oriented layer, compared with the example comprising oriented layer, the thin-film display with less thickness can be obtained.
Usually, Polarizer by combinations such as adhesion and display panels, thus can be applicable in image display.Composite polarizing plate of the present invention can easily stand above-mentioned adhesion.
More particularly, the adhesion based on the binding agent of water is utilized usually to be performed by applying, adhesion and drying.Because polarizer and protective membrane have high water absorbability, therefore they absorb moisture, and expand after the drying.In this case, as shown in Figure 1, the phase separation layer lateral bend of edge part branch from polarizer side towards patterning of composite polarizing plate, thus can easily adhere to.
Degree of crook is not particularly limited, as long as it does not affect in the scope of physical properties (such as weather resistance) bending.Such as, the center of gravity of polarizer and the difference of altitude between the vertex of the position of the center of gravity 5cm apart from this polarizer can be 3mm or larger.If degree of crook is in above-mentioned scope, then the easness of adhesion can be made to maximize.In the physical properties and adhesive power of excellence, the scope of degree of crook is preferably at 3mm to 5mm.
Utilize the composite polarizing plate of above-mentioned binder composition manufacture can show the adhesive power of the excellence between polarizer and the phase separation layer of patterning.Such as, the stripping strength applied between polarizer and the phase separation layer of patterning can be 2N/25mm or larger, and preferred 2.5N/25mm to 5N/25mm or larger.
< image display >
In addition, the invention provides the image display comprising above-mentioned composite polarizing plate.
Image display is not particularly limited, but can comprise such as obtaining liquid crystal display or transflective liquid crystal display equipment, plasma display equipment, organic EL (electroluminescent) display equipment etc. of stereo-picture.
The phase separation layer that composite polarizing plate of the present invention may be provided in Polarizer and patterning is laminated the position at place usually.
Hereinafter, with reference to embodiment, more specifically the present invention will be understood to being preferred embodiment described.But, those skilled in the art is apparent that, these embodiments are only for illustration of the object of property and unrestricted appended claim, when do not depart from the scope of the present invention and spirit, various distortion and amendment can be carried out, and these distortion and amendment should be included in the present invention as defined by the appended claims.
Preparation embodiment 1
By 10g polyvinyl alcohol resin (P2000, JapanSynthesis company) heating after, then be dissolved in the methyl-sulphoxide (DMSO) of 100ml, in 30 minutes, 10g Benzoyl chloride be slowly added dropwise in this solution by dropping funnel, simultaneously stirred solution.Next, continue stirred solution 5 hours at the same temperature, then at room temperature cool, subsequently reaction mixture is instilled in 300mL acetone to generate throw out.By fritted filter throw out, then at 100 DEG C, pass through warm air drying 1 hour.
A part for products therefrom is dissolved in DMSO-d6 solvent, then utilizes NMR to carry out the intensity analyzing to compare CH-OH peak and CH-OBz peak.As the result compared, find that product is the polyvinyl alcohol of the modification degree with 25%.After this, 10g reaction mixture is placed in 500mL distilled water, is heated to 50 DEG C, then make it dissolve, thus the water-soluble solution of preparation 2%.
Preparation embodiment 2
Except using 7g Benzoyl chloride, by such as preparing the identical step described in embodiment 1, preparation modification degree is the water-soluble poval solution of 15% 2%.
Preparation embodiment 3
Except using 2g Benzoyl chloride, by such as preparing the identical step described in embodiment 1, preparation modification degree is the water-soluble poval solution of 8% 2%.
Preparation embodiment 4
Except using 15g Benzoyl chloride, by such as preparing the identical step described in embodiment 1, preparation modification degree is the water-soluble poval solution of 32% 2%.
Embodiment and comparing embodiment
Different formation component listed in following table 1 and content (according to solids content) is utilized to prepare binder composition.
[table 1]
Comparing embodiment 3
By adding the Igacure-184 as initiator (BASF AG) of 1 weight part to the 2-hydroxyl-3-phenoxypropylacrylate of 100 weight parts, prepare the binder composition of photopolymerization.
EXPERIMENTAL EXAMPLE
(1) measurement of stripping strength
Polyvinyl alcohol polarizer (is comprised the phase separation layer (MPR32 of patterning; DNP company) with the triacetyl cellulose protective membrane in a face adhering to this polarizer) be placed to and contact with liquid crystal coatings, then utilize the binder composition prepared in each embodiment and comparing embodiment that this polarizer is adhered to this liquid crystal coatings by roller laminator.In order to assess, the end of laminated product is uncoated binder composition.
After this, by the product after process at 100 DEG C dry 3 minutes, then at room temperature place 48 hours same as before, thus solidification.
After the composite polarizing plate of this manufacture described above is cut into width is the sample of 25mm, with the peeling rate of 300mm/min, on the direction of delaminate of 180 °, this sample is peeled off, measures stripping strength subsequently.
(2) assessment of thermotolerance and humidity resistance
According to the identical step of the such as middle description of EXPERIMENTAL EXAMPLE (1), manufacture composite polarizing plate.Applying acrylic acid binder to protective membrane and making after it solidifies, this cured film is adhered to soda glass, is then subject to pressure and steams process.
Next, respectively the film after process is being kept 500 hours at 80 DEG C, then 60 DEG C, keep 500 hours under the RH (relative humidity) of 90% after, examine whether to produce on bubble or the surface of adherence between polarizer and liquid crystal coatings and occur peeling off.According to evaluation criteria below, the result of research is for assessment of thermotolerance and humidity resistance.
Zero: do not observe bubble or stripping
△: observe bubble or stripping in very little region
X: easily visually observe bubble or stripping
When zero, according to above-mentioned standard, only have when thermotolerance and humidity resistance all occur, be just assessed as zero.For △ and X, according to above-mentioned standard, even if when only one occurs in thermotolerance and humidity resistance, be also assessed as △ or X.
(3) measurement of degree of crook
According to the identical step of the such as middle description of EXPERIMENTAL EXAMPLE (1), manufacture composite polarizing plate.After the size cutting into 10cm × 10cm around the center of gravity of Polarizer, cutting sample is placed on the table in the mode of the phase separation layer of patterning towards top.
After this, the height from worktable to the center of the topnotch curved side in polarizer side is measured.
[table 2]
With reference to table 2, can see, the composite polarizing plate manufactured by utilizing the various binder compositions of preparation in embodiment 1, embodiment 2 and embodiment 5 to embodiment 7 to carry out bonding has very high stripping strength (2.8N/25mm), and there is not bubble or stripping, therefore obtain excellent thermotolerance and humidity resistance.In addition, Polarizer bends 3.5mm or more, therefore demonstrates the possibility easily adhered to.
For the binder composition of embodiment 3 and embodiment 4, wherein, the modification degree of water soluble resin exceedes the scope of expectation, and these compositions still show favourable performance, is a bit deteriorated although these performances have.
For comprise with the amount exceeding expected range polyvinyl alcohol resin embodiment 8 binder composition and comprise the binder composition of embodiment 9 of excessive linking agent, these compositions still show favourable performance, are a bit deteriorated although these performances have.
But the binder composition of preparation has significantly reduced stripping strength in comparing embodiment 1 to comparing embodiment 3.In addition, comparing embodiment 1 and comparing embodiment 2 show the reduction of thermotolerance and humidity resistance, and comparing embodiment 3 shows and do not have bending effect and cause being not easy adhering to.
[description of Reference numeral]
100: polarizer; 200: binder layer;
300: the phase separation layer of patterning; 400: protective membrane.
Claims (16)
1. a binder composition, comprising:
Water soluble resin, described water soluble resin is included in the polyvinyl alcohol resin that side chain has phenyl ring; And linking agent.
2. binder composition according to claim 1, wherein, the hydroxyl of described polyvinyl alcohol resin is modified into the substituting group containing phenyl ring.
3. binder composition according to claim 2, wherein, described substituting group is the benzoyloxy replaced by halogen, hydroxyl, carboxyl, amino or nitro, or not by the benzoyloxy of halogen, hydroxyl, carboxyl, amino or nitro replacement.
4. binder composition according to claim 2, wherein, the scope from described hydroxyl to the described substituent modification degree containing phenyl ring is 10% to 30%.
5. binder composition according to claim 1, wherein, by the condensation of the acyl chlorides containing phenyl ring or acid anhydrides and polyvinyl alcohol resin, obtains the described polyvinyl alcohol resin at side chain with phenyl ring.
6. binder composition according to claim 1, wherein, relative to the gross weight of described water soluble resin, comprises the described polyvinyl alcohol resin at side chain with phenyl ring of the content being equal to or greater than 10 % by weight.
7. binder composition according to claim 1, wherein, described linking agent is be selected from least one in the group that is made up of monoaldehyde, dialdehyde, amino-formaldehyde resins, glyoxylate, acetal compound, divalent metal, trivalent metal, tetravalent metal, metallo-chelate, oxazoline, trimeric cyanamide, ethylenimine and poly mineral acid.
8. binder composition according to claim 1, wherein, according to the described water soluble resin of solids content relative to 100 weight parts, comprises the described linking agent of the content of 0.5 weight part to 20 weight part.
9. a composite polarizing plate, comprising:
Polarizer; And
The phase separation layer of patterning, the phase separation layer of described patterning utilizes binder composition according to any one of claim 1 to 8 to adhere to a face of described polarizer.
10. composite polarizing plate according to claim 9; wherein; described polarizer comprises the film with protective membrane function or the film with phase retardation film function, described in have protective membrane function film or described in there is phase retardation film function film adhered to the face contrary with the face of the phase separation layer being stained with described patterning of described polarizer.
11. composite polarizing plates according to claim 9, wherein, the phase separation layer of described patterning comprises liquid crystal coatings, and described liquid crystal coatings contains the reactive liquid crystalline monomer with phenyl ring.
12. composite polarizing plates according to claim 9, wherein, the phase separation layer of described patterning does not comprise oriented layer.
13. composite polarizing plates according to claim 9, wherein, edge section is from described polarizer side towards the phase separation layer lateral bend of described patterning.
14. composite polarizing plates according to claim 9, wherein, the center of gravity of described polarizer and the difference of altitude between the vertex of the position apart from described center of gravity 5cm are for being equal to or greater than 3mm.
15. composite polarizing plates according to claim 9, wherein, the stripping strength between the phase separation layer of described polarizer and described patterning is for being equal to or greater than 2N/25mm.
16. 1 kinds of image displays, comprise composite polarizing plate according to claim 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130094108A KR101921094B1 (en) | 2013-08-08 | 2013-08-08 | Adhesive composition and complexed polarization plate using the same |
| KR10-2013-0094108 | 2013-08-08 | ||
| PCT/KR2014/006669 WO2015020325A1 (en) | 2013-08-08 | 2014-07-23 | Adhesive composition and composite polarizing plate using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105473679A true CN105473679A (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480043880.9A Pending CN105473679A (en) | 2013-08-08 | 2014-07-23 | Adhesive composition and composite polarizing plate using same |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101921094B1 (en) |
| CN (1) | CN105473679A (en) |
| TW (1) | TW201506102A (en) |
| WO (1) | WO2015020325A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796355A (en) * | 2019-04-08 | 2020-10-20 | 三星Sdi株式会社 | Polarizing plate and optical display device comprising same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102568101B1 (en) * | 2020-10-27 | 2023-08-17 | 삼성에스디아이 주식회사 | Adhesive composition for polarizing plate, polarizing plate and optical display apparatus |
| KR102609171B1 (en) * | 2021-01-13 | 2023-12-01 | 삼성에스디아이 주식회사 | Adhesive composition for polarizing plate, polarizing plate and optical display apparatus |
| KR102612126B1 (en) * | 2021-01-13 | 2023-12-08 | 삼성에스디아이 주식회사 | Adhesive composition for polarizing plate, polarizing plate and optical display apparatus |
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| US3560465A (en) * | 1969-04-01 | 1971-02-02 | Eastman Kodak Co | Preparation of soluble poly(vinyl esters) from high molecular weight acid chlorides |
| JPS6312464A (en) * | 1986-06-26 | 1988-01-19 | 三菱化成ポリテック株式会社 | Transparent laminated plastic film having excellent gas barrier property |
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| CN1304429A (en) * | 1999-03-23 | 2001-07-18 | 日清纺织株式会社 | Composition for ionically conductive solid polymer, ionically conductive solid polelectrolyte, binder resin, and secondary battery |
| US8298750B2 (en) * | 2009-09-08 | 2012-10-30 | Eastman Kodak Company | Positive-working radiation-sensitive imageable elements |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090049382A (en) * | 2007-11-13 | 2009-05-18 | 주식회사 에이스 디지텍 | Adhesive composition for polarizing plate |
| KR20110009840A (en) * | 2009-07-23 | 2011-01-31 | 동우 화인켐 주식회사 | Anti-static adhesive composition and polarizing plate using the same |
| KR20130035353A (en) * | 2011-09-30 | 2013-04-09 | 동우 화인켐 주식회사 | Adhesive composition and polarizing plate using the same |
| KR101397696B1 (en) * | 2011-11-25 | 2014-05-22 | 제일모직주식회사 | Adhesive composition for polarizing plate |
-
2013
- 2013-08-08 KR KR1020130094108A patent/KR101921094B1/en active IP Right Grant
-
2014
- 2014-07-23 CN CN201480043880.9A patent/CN105473679A/en active Pending
- 2014-07-23 WO PCT/KR2014/006669 patent/WO2015020325A1/en active Application Filing
- 2014-08-04 TW TW103126624A patent/TW201506102A/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3560465A (en) * | 1969-04-01 | 1971-02-02 | Eastman Kodak Co | Preparation of soluble poly(vinyl esters) from high molecular weight acid chlorides |
| JPS6312464A (en) * | 1986-06-26 | 1988-01-19 | 三菱化成ポリテック株式会社 | Transparent laminated plastic film having excellent gas barrier property |
| JPH10218938A (en) * | 1997-02-06 | 1998-08-18 | Fuji Photo Film Co Ltd | Element with alignment layer |
| CN1304429A (en) * | 1999-03-23 | 2001-07-18 | 日清纺织株式会社 | Composition for ionically conductive solid polymer, ionically conductive solid polelectrolyte, binder resin, and secondary battery |
| US8298750B2 (en) * | 2009-09-08 | 2012-10-30 | Eastman Kodak Company | Positive-working radiation-sensitive imageable elements |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796355A (en) * | 2019-04-08 | 2020-10-20 | 三星Sdi株式会社 | Polarizing plate and optical display device comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015020325A1 (en) | 2015-02-12 |
| KR101921094B1 (en) | 2019-02-13 |
| TW201506102A (en) | 2015-02-16 |
| KR20150017906A (en) | 2015-02-23 |
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