CN106415339B - Optical laminate and image display device - Google Patents
Optical laminate and image display device Download PDFInfo
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- CN106415339B CN106415339B CN201580027106.3A CN201580027106A CN106415339B CN 106415339 B CN106415339 B CN 106415339B CN 201580027106 A CN201580027106 A CN 201580027106A CN 106415339 B CN106415339 B CN 106415339B
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- Prior art keywords
- film
- optical
- optical laminate
- adhesive
- polarizing film
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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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of optical laminate, and it includes polarizing film and the optical film being laminated in one face, which projects after rectilinearly polarized light is transformed to elliptically polarized light, meets following formula: (1) 100nm≤Re(590)≤180nm, (2) 0.5 < Rth(590)/Re(590)≤0.8、(3)0.85≤Re(450)/Re(550) < 1.00 and (4) 1.00 < Re(630)/Re(550)≤1.1, in formula, Re(590)、Re(450)、Re(550)、Re(630) phase difference value in face when respectively indicating measurement wavelength 590nm, 450nm, 550nm, 630nm, Rth(590) thickness direction phase difference value when measurement wavelength 590nm is indicated, further, it would be desirable to provide the image display devices for having used the optical laminate.
Description
Technical field
The present invention relates to the optical laminate comprising polarizing film and the image of the optical laminate is used to show dress
It sets.
Background technique
Portable phone, smart phone, plate letter are equipped on by the image display device of representative of liquid crystal display device
It ceases in many mobile devices such as terminal, mobile television, digital camera, navigator.Such as such mobile device is used in outdoor etc.
When, the picture for observing image display device in the state of wearing and polarizing sunglasses sometimes in this case shows image
Device is very excellent observing property when requiring even if across polarization sunglasses viewing picture.
It proposed in the past several for improving across the method (patent document for polarizing observation when sunglasses watches picture
1~10).
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2009-122454 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2011-107198 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2011-215646 bulletin
Patent document 4: Japanese Unexamined Patent Publication 2012-230390 bulletin
Patent document 5: Japanese Unexamined Patent Publication 03-174512 bulletin
Patent document 6: Japanese Unexamined Patent Publication 2013-231761 bulletin
Patent document 7: Japanese Unexamined Patent Publication 2011-113018 bulletin
Patent document 8: Japanese Unexamined Patent Publication 2013-182162 bulletin
Patent document 9: Japanese Unexamined Patent Publication 2013-200445 bulletin
Patent document 10: Japanese Unexamined Patent Publication 2010-091655 bulletin
Summary of the invention
Problem to be solved by the invention
The previous method of observation when for improving across polarization sunglasses viewing picture can generally be divided into:
The observation side of the image-displaying member of liquid crystal cells etc configures polarization plates, the observation side of above-mentioned polarization plates be configured to by from
The rectilinearly polarized light that above-mentioned polarization plates project is transformed to the side of the phase plate (such as the wavelength plate of λ/4) of oval (or circle) polarised light
Method (Patent Documents 1 to 9)；It is configured to above-mentioned rectilinearly polarized light being transformed to no polarization light with the observation side in above-mentioned polarization plates
Polarised light eliminating layer method (patent document 10).
But the above method that conventional art is proposed is to be related to the method for following technology, that is, for inhibiting across inclined
Absorption axiss of the brightness of picture when the sunglasses that shakes is watched dependent on the polarization plates for the observation side configured in image-displaying member
Change with the absorption axiss angulation of polarization sunglasses, and is not related to inhibiting to see from various directions (azimuth and polar angle)
The method for seeing the technology that the tone (color and taste) when picture changes.
The object of the present invention is to provide may be implemented to see across polarization sunglasses from various directions (azimuth and polar angle)
It sees the optical laminate of the small image display device of tone variations when picture and has used the observation of the optical laminate
Good image display device.
The method for solving problem
The present invention provides optical laminate and image display device below.
[1] a kind of optical laminate, it includes polarizing film and the optical film being laminated in one face,
The optical film projects after rectilinearly polarized light is transformed to elliptically polarized light, and meets following formula:
(1)100nm≤Re(590)≤180nm、
(2) 0.5 < Rth(590)/Re(590)≤0.8、
(3)0.85≤Re(450)/Re(550) < 1.00 and
(4) 1.00 < Re(630)/Re(550)≤1.1
In formula, Re(590)、Re(450)、Re(550)、Re(630) respectively indicate measurement wavelength 590nm, 450nm, 550nm,
Phase difference value in face when 630nm, Rth(590) thickness direction phase difference value when measurement wavelength 590nm is indicated.
[2] according to the optical laminate recorded in [1], wherein the absorption of the slow axis of the optical film and the polarizing film
Axis angulation is 45 ± 20 ° or 135 ± 20 °.
[3] according to the optical laminate recorded in [1] or [2], wherein the optical film contains cyclic polyolefin hydrocarbon system tree
Rouge, polycarbonate-based resin, cellulose-based resin, polyester based resin or (methyl) acrylic resin.
[4] optical laminate recorded according to any one of [1]~[3], wherein the optical film is pressed from both sides to be glued across first
Mixture layer or adhesive are laminated on layer by layer on the polarizing film.
[5] optical laminate recorded according to any one of [1]~[4], wherein also comprising being laminated in the polarizing film
With the second adhesive phase on the face of the optical film opposite side.
[6] optical laminate recorded according to any one of [1]~[4], wherein also comprising being laminated in the polarizing film
With the thermoplastic resin film on the face of the optical film opposite side.
[7] according to the optical laminate recorded in [6], wherein the thermoplastic resin film is phase difference film.
[8] according to the optical laminate recorded in [6] or [7], wherein also comprising being laminated in the thermoplastic resin film
With the third adhesive phase on the face of the polarizing film opposite side.
[9] a kind of image display device has the optical layer of any one of image-displaying member and [1]~[8] record
Stack,
It is image-displaying member side that the optical laminate, which is configured as the polarizing film,.
Invention effect
It is watched across polarization sunglasses from various directions (azimuth and polar angle) according to the present invention it is possible to provide and can be realized
The optical laminate of the small image display device of tone variations when picture and the image display device for having used it.
Detailed description of the invention
Fig. 1 is the constructed profile of an example for indicating that the layer of optical laminate of the invention is constituted.
Fig. 2 is another constructed profile for indicating the layer of optical laminate of the invention and constituting.
Fig. 3 is another constructed profile for indicating the layer of optical laminate of the invention and constituting.
Fig. 4 is another constructed profile for indicating the layer of optical laminate of the invention and constituting.
Fig. 5 is azimuth and the schematic diagram of polar angle for illustrating to indicate the direction of the picture of viewing image display device.
Fig. 6 is the figure for illustrating the absorption axiss angulation θ of the slow axis and polarizing film of optical film.
Fig. 7 is the constructed profile of an example for indicating that the layer of liquid crystal display device of the invention is constituted.
Fig. 8 is the side view and exploded perspective view for schematically showing the measurement system of tone variations.
Fig. 9 is the xy chromatic diagram obtained for the optical laminate of embodiment 1.
Figure 10 is the xy chromatic diagram obtained for the optical laminate of embodiment 2.
Figure 11 is the xy chromatic diagram obtained for the optical laminate of embodiment 3.
Figure 12 is the xy chromatic diagram obtained for the optical laminate of comparative example 1.
Figure 13 is the xy chromatic diagram obtained for the optical laminate of comparative example 2.
Figure 14 is the xy chromatic diagram obtained for the optical laminate of comparative example 3.
Figure 15 is the xy chromatic diagram obtained for the optical laminate of comparative example 4.
Figure 16 is the xy chromatic diagram obtained for the optical laminate of comparative example 5.
Figure 17 is the xy chromatic diagram obtained for the optical laminate of comparative example 6.
Specific embodiment
Hereinafter, being carried out specifically and providing embodiment to optical laminate of the invention and image display device
It is bright.
< optical laminate >
The layer of (a) optical laminate is constituted
Optical laminate of the invention includes polarizing film and the optical film being laminated in one face.By light of the invention
An example for learning the layer composition of laminated body is shown in Fig. 1.Optical laminate 1 shown in FIG. 1 includes polarizing film 10 and folder across the
One adhesive phase or gluing oxidant layer 25 are laminated in the optical film 20 on a face of polarizing film 10.In optical laminate of the invention
Optical film 20 is arranged in the optical parameter on a face of polarizing film 10, and having will project from polarizing film 10 to optical film 20
Rectilinearly polarized light is transformed to elliptically polarized light (including the case where circularly polarized light) and the function of injection.
It is not limited to the example of Fig. 1, optical laminate of the invention can be also comprising be laminated in polarizing film 10 and optics
Other layers on the face of 20 opposite side of film.The example of optical laminate comprising other layers is shown in Fig. 2 and Fig. 3
In.Optical laminate 2 shown in Fig. 2 includes polarizing film 10；Folder is laminated in polarization across first adhesive phase or gluing oxidant layer 25
Optical film 20 on one face of piece 10；The second adhesive being laminated on the face with 20 opposite side of optical film of polarizing film 10
Layer 30.
Optical laminate 3 shown in Fig. 3 includes polarizing film 10；Folder is laminated in across first adhesive phase or gluing oxidant layer 25
Optical film 20 on one face of polarizing film 10；Press from both sides across the 4th adhesive phase or gluing oxidant layer 45 be laminated in polarizing film 10 with
The first thermoplastic resin film 40 on the face of 20 opposite side of optical film；Be laminated in the first thermoplastic resin film 40 and polarization
Third adhesive phase 50 on the face of 10 opposite side of piece.In optical laminate 3, third adhesive phase 50 also can be omitted.
The outermost second adhesive phase 30 or third adhesive phase 50 for being configured at optical laminate for example can be used for
Optical laminate is bonded on other optical components of image-displaying member etc.
Alternatively, it is also possible to as optical laminate 4 shown in Fig. 4, sandwiched between polarizing film 10 and optical film 20
Two thermoplastic resin films 60.Second thermoplastic resin film 60, which can for example be pressed from both sides, fits in polarizing film 10 across gluing oxidant layer 65.
(b) polarizing film
Polarizing film 10 can be the rectilinearly polarized light, simultaneously for having and absorbing and having the vibration plane parallel with optic axis (absorption axiss)
The optical parameter with the property of rectilinearly polarized light of the vibration plane orthogonal with optic axis is transmitted, specifically, can be suitably
Using on polyvinyl alcohol resin film gas absorption quantity have the optical parameter of dichroism pigment (iodine or dichroic organic dye).
The polyvinyl alcohol resin for constituting polarizing film 10 can be obtained by by polyvinyl acetate system resin saponification.Make
It can also be illustrated other than as the polyvinyl acetate of the homopolymer of vinyl acetate for polyvinyl acetate system resin
The copolymer etc. of vinyl acetate and other monomers that can be copolymerized therewith out.As other lists with vinyl acetate copolymerization
Body, for example, unsaturated carboxylic acid class, olefines, vinyl ethers, unsaturated sulfonic acid class, (methyl) third with ammonium
Acrylamide etc..The saponification degree of polyvinyl alcohol resin is usually 85~100 moles of % or so, preferably 98 moles of % or more.
The polyvinyl alcohol resin can further be modified, for example, also can be used the polyvinyl formal being modified with aldehydes,
Polyvinyl acetal etc..
Moreover, " (methyl) acrylic acid " so-called in this specification, refers in acrylic acid and methacrylic acid at least
One side.It is also identical whens for being referred to as " (methyl) acryloyl group " etc..
The degree of polymerization of polyvinyl alcohol resin is usually 1000~10000 or so, and preferably 1500~5000 or so.As
Specific polyvinyl alcohol resin or dichroism pigment, for example, being illustrated in Japanese Unexamined Patent Publication 2012-159778 bulletin
Substance.
The raw material film that film obtained by above-mentioned polyvinyl alcohol resin film can be used as polarizing film 10 is used.Polyethylene
Alcohol system resin can use well known method film.The thickness of raw material film comprising polyvinyl alcohol resin is, for example, 1~150
μm or so.If also considering the easness etc. of stretching, thickness is preferably 10 μm or more.
Polarizing film 10 can for example be manufactured via following process, that is, to polyvinyl alcohol resin film as described above
The process being uniaxially stretched；It will be dyed by the polyvinyl alcohol resin film dichroism pigment being uniaxially stretched and be allowed to adsorb
The process of the dichroism pigment；The work of the polyvinyl alcohol resin film boric acid aqueous solution processing of dichroism pigment will be adsorbed with
Sequence；The process washed after the processing using the boric acid aqueous solution；And drying process.The thickness of polarizing film 10 is usually
2~40 μm or so, preferably 3~30 μm or so.
Polarizing film 10 can for example be manufactured according to the method recorded in Japanese Unexamined Patent Publication 2012-159778 bulletin.This article
It offers in the method for record, not instead of using the above-mentioned raw material film comprising polyvinyl alcohol resin, utilizes polyethenol series
Coating of the resin on base material film forms polyvinyl alcohol resin layer, is stretched, is dyed to it and polarizer layer is made (partially
Shake piece 10) after, the thermoplastic resin film of fitting protective film etc.
(c) optical film
The optical film 20 being laminated on a face of polarizing film 10 is the film for meeting following formula:
(1)100nm≤Re(590)≤180nm、
(2) 0.5 < Rth(590)/Re(590)≤0.8、
(3)0.85≤Re(450)/Re(550) < 1.00 and
(4) 1.00 < Re(630)/Re(550)≤1.1。
In formula, Re(590)、Re(450)、Re(550)、Re(630) respectively indicate measurement wavelength 590nm, 450nm, 550nm,
Phase difference value in face when 630nm, Rth(590) thickness direction phase difference value when measurement wavelength 590nm is indicated.In temperature 23
DEG C, measure phase difference value and thickness direction phase difference value in these faces in the environment of relative humidity 55%.
For phase difference value R in the face of optical film 20e, thickness direction phase difference value Rth, the folding of slow-axis direction in by face
The rate of penetrating is set as nx, the refractive index of fast axis direction in face (direction orthogonal with slow-axis direction in face) is set as ny, by thickness direction
Refractive index is set as nz, when the thickness of optical film 20 is set as d, be defined by the formula:
Re=(nx- ny)×d
Rth=[{ (nx+ny)/2 }-nz]×d
It is laminated according to the optical film 20 that would indicate that above-mentioned formula (1)~(4) phase difference characteristics and wavelength dispersion characteristics
Optical laminate on one face of polarizing film 10, be applied to image display device in the case where (more specifically, be
The observation side of image-displaying member is applied as the polarization plates configured in a manner of making 10 image display device side of polarizing film
In the case where), brightness when watching picture from various directions (azimuth and polar angle) across polarization sunglasses can be maintained, is had
Effect ground inhibits tone variations, and the observation of image display device can be improved.It is different, it is being unsatisfactory for above-mentioned formula (1)~(4)
Either one or two of it is above in the case where, taking into account for the inhibition of maintenance and tone variations to brightness becomes to be not enough.
As shown in Fig. 5 (a), so-called azimuth is comparable to the angle of longitude, and so-called polar angle is comparable to the angle of latitude.
In Fig. 5 (b), provide as an example azimuth be 0 °, the observation position (destination locations) when polar angle is 40 °.
R from the viewpoint of brightness when maintaining across polarization sunglasses viewing picture, in formula (1)e(590) preferably
R for 105~170nm, from the viewpoint of more efficiently inhibiting tone variations, in formula (2)th(590)/Re(590) preferably
For 0.75 hereinafter, R in formula (3)e(450)/ReIt (550) is preferably 0.86~0.98, the R in formula (4)e(630)/Re(550) excellent
It is selected as 1.01~1.06.
Optical film 20 is that have that elliptically polarized light will be transformed to from polarizing film 10 to the rectilinearly polarized light that optical film 20 projects
1 kind of phase difference film of the function that (including the case where circularly polarized light) is projected afterwards, in order to embody the function, referring to Fig. 6, by optics
Film 20 is so that the mode layer that the absorption axiss 10a angulation θ of its slow axis 20a and polarizing film 10 is 45 ± 20 ° or 135 ± 20 °
It is laminated on polarizing film 10.In the case where outside angle, θ is the range, it is difficult to obtain rectilinearly polarized light being transformed to elliptically polarized light
The function of projecting afterwards, as a result, brightness when across polarization sunglasses viewing picture has the tendency that reduction.Angle, θ is preferred
It is 45 ± 10 ° or 135 ± 10 °, more preferably 45 ± 5 ° or 135 ± 5 °.
Optical film 20 can be the film comprising (preferably optically transparent) thermoplastic resin with translucency.As
Thermoplastic resin, for example, chain polyolefin-based resins (polypropylene-based resin etc.), cyclic polyolefin hydrocarbon system resin (drop ice
Piece alkene system resin etc.) etc polyolefin-based resins；The cellulose esters system of cellulosic triacetate, cellulose diacetate etc
The cellulose-based resins such as resin；Polyester based resin；Polycarbonate-based resin；(methyl) acrylic resin；Polystyrene tree
Rouge；Or their mixture, copolymer etc..
Chain olefin as chain polyolefin-based resins, in addition to polyvinyl resin, acrylic resin etc can be enumerated
Homopolymer other than, the copolymer comprising chain olefin of more than two kinds can also be enumerated.
Cyclic polyolefin hydrocarbon system resin is the general name for the resin being polymerize using cyclic olefin as polymerized unit.If enumerating ring-type
The concrete example of polyolefin-based resins is then the open loop (co) polymer of cyclic olefin, the addition polymer of cyclic olefin, cyclic annular alkene
Hydrocarbon is used unsaturated with the copolymer (representative is random copolymer) of the chain olefin of ethylene, propylene etc and by them
Graft polymers and their hydride that carboxylic acid or derivatives thereof has been modified etc..Wherein, it is preferable to use as cyclic olefin
The norbornene resin of the orbornene-baseds monomers such as norbornene, condensed ring orbornene-based monomer is used.
Cellulose esters system resin is the ester of cellulose and fatty acid.The concrete example of cellulose esters system resin includes cellulose iii
Acetic acid esters, cellulose diacetate, cellulose tripropionate, cellulose dipropionate.Alternatively, it is also possible to use their copolymerization
The resin modified by other substituent groups of a part of object, hydroxyl.In them, particularly preferred cellulosic triacetate (three
Acetylcellulose: TAC).
Polyester based resin is the resin having other than ester bond, cellulose esters system resin, usually by polybasic carboxylic acid or its
The resin that the condensation polymer of derivative and polyalcohol is constituted.As polybasic carboxylic acid or derivatives thereof can be used binary dicarboxylic acids or
Its derivative, for example, terephthalic acid (TPA), M-phthalic acid, dimethyl terephthalate (DMT), naphthalene diformic acid dimethyl ester etc..
The glycol of binary can be used as polyalcohol, for example, ethylene glycol, propylene glycol, butanediol, neopentyl glycol, hexamethylene
Dimethanol etc..
The concrete example of polyester based resin includes polyethylene terephthalate, polybutylene terephthalate (PBT), poly- naphthalene
Naphthalate, polypropylene terephthalate, polytrimethylene naphthalate, gathers at polybutylene naphthalate
Terephthalic acid (TPA) cyclohexane dicarboxylates, poly- naphthalenedicarboxylic acid cyclohexane dicarboxylates.
Polycarbonate-based resin polymer obtained by being bonded monomeric unit by carbonate group is constituted.It is polycarbonate-based
Resin is also possible to modify the resin or copolymerization polycarbonate referred to as modified polycarbonate as polymer backbone
Deng.
(methyl) acrylic resin is the tree using the compound with (methyl) acryloyl group as main composition monomer
Rouge.Poly- (methyl) acrylate of the concrete example of (methyl) acrylic resin for example including polymethyl methacrylate etc；
Methyl methacrylate-(methyl) acrylic copolymer；Methyl methacrylate-(methyl) acrylate copolymer；Methyl
Methyl acrylate-acrylic acid ester-(methyl) acrylic copolymer；(methyl) acrylate-styrene copolymer (MS tree
Rouge etc.)；Copolymer (such as methyl methacrylate-methyl of methyl methacrylate and the compound with alicyclic alkyl
Acrylate ester copolymer, methyl methacrylate-(methyl) acrylic acid norbornyl ester copolymer etc.).It is preferable to use with poly-
Poly- (methyl) the acrylic acid C of (methyl) methyl acrylate etc1-6Polymer of the Arrcostab as principal component, more preferable use with
Methyl methacrylate system of the methyl methacrylate as principal component (50~100 weight %, preferably 70~100 weight %)
Resin.
Coating being capable of body through film of the stretching containing above-mentioned thermoplastic resin or on the film containing above-mentioned thermoplastic resin
The liquid crystal material equiphase difference for revealing phase difference embodies substance and forms phase separation layer, can produce optical film 20.As drawing
Processing is stretched, can be enumerated and be uniaxially stretched, is biaxial stretch-formed etc..As draw direction, the mechanical flow side of unstretching film can be enumerated
To (MD), orthogonal direction (TD), with the direction of mechanical flow direction (MD) oblique etc..It is biaxial stretch-formed to can be at 2
Draw direction is biaxial stretch-formed while stretching simultaneously, be also possible to after being stretched along assigned direction along other directions into
Row stretches gradually biaxial stretch-formed.Stretch processing can for example be carried out by operating as follows, that is, use increasing for outlet side
2 pairs or more of niproll of peripheral speed, (mechanical flow direction: MD) is stretched along its length, or is held not with chuck
The two side ends of stretched film and broadened along the direction (TD) orthogonal with mechanical flow direction.At this point, by adjusting film thickness,
Or adjustment stretching ratio, phase difference value can be controlled as in the range of above-mentioned formula (1)~(2).In addition, by adding into resin
Add wavelength dispersion regulator, wavelength dispersion value can be controlled as in the range of above-mentioned formula (3)~(4).
As long as the thickness d of optical film 20 meets above-mentioned formula (1)~(4), just it is not particularly limited, however is laminated from optics
From the viewpoint of the slimming of body, preferably 90 μm hereinafter, more preferably 60 μm hereinafter, in addition from optical film 20 operability
Viewpoint consideration, preferably 5 μm or more, more preferably 10 μm or more.
Optical film 20 can be inhaled containing one kind or two or more lubricant, plasticizer, dispersing agent, heat stabilizer, ultraviolet light
Receive the additive of agent, infrared absorbent, anti-static electricity interference agent, antioxidant etc.
In addition, can be arranged in the outer surface of optical film 20 and apply to assign desired optical characteristics or other features
Coating (surface-treated layer).The concrete example of coat includes hard conating, antiglare layer, anti-reflection layer, anti-static electricity interference layer, antifouling
Layer.The method for forming coat is not particularly limited, and well known method can be used.
(d) thermoplastic resin film
For the first thermoplastic resin film 40 that can be laminated on the face with 20 opposite side of optical film of polarizing film 10
(referring to Fig. 3), the second thermoplastic resin film 60 (referring to Fig. 4) that can be located between polarizing film 10 and optical film 20, is constituted
Can be used as the thermoplastic resin for the film that these films use concrete example can with for optical film 20 in the resin being exemplified above
It is identical.In the case where having the first thermoplastic resin film 40 and the second 60 both sides of thermoplastic resin film, the two can be by of the same race
Thermoplastic resin constitute, can also be made of thermoplastic resin not of the same race.
First thermoplastic resin film 40 and the second thermoplastic resin film 60 can be the effect for only undertaking protection polarizing film 10
Protective film, the first thermoplastic resin film 40 for being especially arranged in the image-displaying member side of polarizing film 10 is also possible to have both
The protective film of optical function as phase difference film.For example, by stretching the film containing above-mentioned thermoplastic resin or containing upper
The liquid crystal material equiphase difference embodiment substance of phase difference can be embodied and form phase difference by stating coating on the film of thermoplastic resin
Layer, so that it may the phase difference film for having been assigned arbitrary phase difference value be made.
For the respective thickness of the first thermoplastic resin film 40 and the second thermoplastic resin film 60, from optical laminate
From the viewpoint of slimming, preferably 90 μm hereinafter, more preferably 60 μm hereinafter, from the viewpoint of operability, preferably 5 μm
More than, more preferably 10 μm or more.
(e) adhesive phase and gluing oxidant layer
For first adhesive phase or gluing oxidant layer 25 first adhesive phase (referring to Fig.1~Fig. 4), can be laminated in partially
Shake piece 10 the face with 20 opposite side of optical film on second adhesive phase 30 (referring to Fig. 2), the first thermoplastic can be laminated in
Property resin film 40 the face with 10 opposite side of polarizing film on third adhesive phase 50 (referring to Fig. 3), the 4th adhesive phase or
The 4th adhesive phase (referring to Fig. 3) of gluing oxidant layer 45, may be used as the viscous of the adhesive phase of these adhesive phases as formation
Mixture, such as can be (methyl) acrylic adhesive, carbamate system adhesive, silicone-based adhesive, Polyester and glue
Mixture, polyamide-based adhesive, polyether system adhesive, fluorine system adhesive, elastomeric adhesive etc., wherein from the transparency, bonding
The viewpoints such as power, reliability, doing over again property consider, it is preferable to use (methyl) acrylic adhesive.Have in optical laminate multiple
In the case where adhesive phase, the adhesive composition for constituting these adhesive phases can have identical composition, it is possible to have
Composition different from each other.
(methyl) acrylic adhesive is usually by using (methyl) acrylic resin as basic polymer and thereto
The adhesive composition for being added to the crosslinking agent of isocyanate compound, epoxide, aziridine cpd etc is constituted.?
It can make to be made in adhesive composition containing particle to show light scattering adhesive phase.The thickness of adhesive phase is usual
It is 1~40 μm, preferably 3~25 μm.
Adhesive phase is in addition to for example can use in the form of organic solvent solution using adhesive, being coated on bonding
It in oxidant layer forming face and is allowed to other than dry method setting, the plastics that will be formed in being carried out demoulding processing can also be utilized
Film (is referred to as separation membrane.) on the sheet adhesive method that is transferred to adhesive phase forming face be arranged.
As formation first adhesive phase or the gluing oxidant layer (referring to Fig.1~Fig. 4) of gluing oxidant layer 25, the 4th adhesive phase
Or the adhesive of the gluing oxidant layer (referring to Fig. 3) of gluing oxidant layer 45, gluing oxidant layer 65 (referring to Fig. 4), water system can be used for example
Adhesive or active energy ray-curable adhesive.As water system adhesive, can enumerate comprising polyvinyl alcohol resin water
Adhesive, two dosage form carbamate system emulsion adhesive of water system of solution etc..It is especially benefit in a side of the film being bonded
In the case where being surface-treated the cellulose esters resin film of (hydrophilicity-imparting treatment) with saponification process etc., it is preferable to use comprising
The water system adhesive of polyvinyl alcohol resin aqueous solution.
As polyvinyl alcohol resin, in addition to the polyvinyl acetate to the homopolymer as vinyl acetate can be used
Carry out obtained by saponification process other than alcotex, can also use to vinyl acetate with can be copolymerized therewith other
Obtained by the copolymer of monomer carries out polyvinyl alcohol based copolymer obtained by saponification process or is modified their hydroxylic moiety
Modified polyvinylalcohol based polymer etc..Water system adhesive can contain polyaldehyde, soluble epoxide compound, melamine system chemical combination
The additives such as object, zirconium dioxide compound, zinc compound.
It is coated with water system adhesive to the binding face of at least one party for 2 films to be bonded, these films are pressed from both sides across gluing
Oxidant layer fitting, preferably carries out pressurization by using doubling roller etc. and is allowed to closely sealed implementing to be bonded.Water system adhesive is (for aftermentioned
Active energy ray-curable adhesive is also identical) coating method be not particularly limited, can be used the tape casting, Meyer stick apply
The known methods such as cloth method, gravure coating process, comma rubbing method, scraper plate method, die coating method, dip coating, spray-on process.
Using water system adhesive, after the fitting preferably stated on the implementation, in order to remove in water system adhesive
Contained water and keep film dry.Such as it can be dried by the way that film is imported drying oven.Drying temperature (the temperature of drying oven
Degree) it is preferably 30~90 DEG C.If being lower than 30 DEG C, adaptation is easy insufficient.In addition if drying temperature is higher than 90 DEG C,
It is possible that deteriorating the polarization property of polarizing film 10 because of heat.
After drying process, also it can be set in room temperature or the temperature more slightly higher than room temperature, for example at 20~45 DEG C or so
Temperature cures 12~600 hours or so curing steps.Curing temperature is generally set to lower than drying temperature.
So-called active energy ray-curable adhesive refers to the work because of ultraviolet light, visible light, electron beam, X-ray etc
The irradiation of property energy-ray and cured adhesive.In this case, gluing oxidant layer is active energy ray-curable adhesive
Solidified material layer.Active energy ray-curable adhesive is preferably photo-curable adhesive, more preferably ultra-violet solidified glue
Stick.
As photo-curable adhesive, for example, the gluing containing polymerizable compound and Photoepolymerizationinitiater initiater
Agent, the adhesive containing light reactive resin, adhesive containing binder resin and photoreactivity crosslinking agent etc..As polymerization
Property compound, can enumerate photo-curable epoxy monomer, light-curable acrylic system monomer, photo-curable carbamate system
The photopolymerization monomer of monomer etc or oligomer from photopolymerization monomer.As Photoepolymerizationinitiater initiater, can enumerate
Contain the work that Neutral radical, radical anion, radical cation etc are generated because of the irradiation of the light of ultraviolet light etc
The initiator of the substance of property kind.As the photo-curable adhesive containing polymerizable compound and Photoepolymerizationinitiater initiater, Ke Yiyou
Choosing uses the adhesive containing photo-curable epoxy monomer and light cationic polymerization initiator.
Using active energy ray-curable adhesive, after the fitting stated on the implementation, as needed into
Row drying process (the case where active energy ray-curable adhesive contains solvent etc.), then carry out by irradiation ultraviolet light it
The active energy beam of class and make the cured curing process of active energy ray-curable adhesive.The active-energy irradiated is penetrated
Line is not particularly limited, however preferably has the ultraviolet light for the distribution that shines below wavelength 400nm, specifically, as light
It is preferable to use Cooper-Hewitt lamp, middle medium pressure mercury lamp, high-pressure mercury-vapor lamp, extra-high-pressure mercury vapour lamp, chemical lamp, black light lamp, microwaves to swash in source
Send out mercury vapor lamp, metal halide lamp etc..
In the fitting of film, for the film binding face of at least one party, in order to improve adhesivity, can carry out at plasma
Reason, sided corona treatment, ultraviolet treatment with irradiation, flame (flame) processing, saponification process etc. are surface-treated (easy gluing processing),
In, preferably carry out corona treatment, sided corona treatment or saponification process.Such as include cyclic polyolefin in the film for the side being bonded
In the case where hydrocarbon system resin, corona treatment or sided corona treatment can be carried out.In addition, in the feelings comprising cellulose esters system resin
Under condition, saponification process can be carried out.As saponification process, the buck for being impregnated in sodium hydroxide, potassium hydroxide etc can be enumerated
Method in solution.
< image display device >
Image display device of the invention be by above-mentioned optical laminate of the invention so that the optical laminate it is inclined
Vibration piece is the device for the observation side that the mode of image-displaying member side configured in image-displaying member.Image-displaying member can be
The element of the non-spontaneous light type of liquid crystal cells etc, is also possible to the element of the emissive type of organic EL display element etc.Liquid
Brilliant unit be clamped between 2 transparent substrates liquid crystal layer, the state of orientation for controlling using voltage application the liquid crystal layer, so as to
The element enough shown, can be using well-known liquid crystal cells in the field of liquid crystal display.Organic EL display element is
With the element of the 1 pair of illuminator of electrode clamping containing luminous organic material, still can be had using well-known in the field
Machine EL display element.
An example that the liquid crystal display device of liquid crystal cells 70 has been used in image-displaying member is shown in Fig. 7.It should
Optical laminate 2 shown in Fig. 2 is applied in example, however it's not limited to that, as long as image display device includes the present invention
Optical laminate.As shown in fig. 7, optical laminate can be attached at image-displaying member using adhesive phase etc.
On.In liquid crystal display device, polarization plates 80 are configured in 90 side of backlight of liquid crystal cells 70, alternatively, it is also possible to by the polarization
Plate 80 is attached on image-displaying member using adhesive phase 85 etc..It, can as the polarization plates 80 and backlight 90 of backlight side
To use the component of known composition.
In image display device of the invention, by optical laminate so that its optical film 20 is configured at the observation of polarizing film 10
The mode (mode for making 10 image-displaying member side of polarizing film) of side is configured on image-displaying member.For having the present invention
Optical laminate image display device, cross polarization sunglasses from various directions (azimuth and polar angle) watch picture when
Brightness is good, and tone variations are small, and observation property is excellent.
Embodiment
More specific description is carried out to the present invention hereinafter, providing Examples and Comparative Examples, however the present invention is not by these
Example limits.
1 > of < embodiment
(1) production of polarizing film
Thick 75 μm of polyvinyl alcohol film (99.9 moles of average degree of polymerization about 2400, saponification degree % or more) is drawn using dry type
Stretch that be uniaxially stretched be about 5 times, then after keeping tense situation unchangeably to impregnate 1 minute in 60 DEG C of pure water, iodine/potassium iodide/
It is impregnated 60 seconds in 28 DEG C of the aqueous solution that the weight ratio of water is 0.05/5/100.Thereafter, in potassium iodide/boric acid/water weight ratio
To be impregnated 300 seconds in 72 DEG C of 8.5/8.5/100 of aqueous solutions.Next clean 20 seconds with 26 DEG C of pure water after, 65 DEG C into
Row drying, obtaining the gas absorption quantity on polyvinyl alcohol film has 28 μm of thickness of polarizing film of iodine.
(2) production of polarization plates
Relative to 100 parts by weight of water, the carboxy-modified polyvinyl alcohol (trade name " KL- bought from (strain) Kuraray is dissolved
318 ") 3 parts by weight add the daiamid epoxy system additive as water-soluble epoxy resin into the aqueous solution (from Tian Ganghua
The aqueous solution of trade name " Sumirez Resin 650 (30) ", 30 weight % of solid component concentration that industrial (strain) is bought)
1.5 parts by weight prepare water system adhesive.The adhesive is coated on to a face of polarizing film obtained in above-mentioned (1), at this
Be bonded on coated face thick 40 μm as triacetyl cellulose (TAC) film (quotient of Konica Minolta Opto (strain) corporation
The name of an article " KC4UY ") protective film after, keep gluing oxidant layer dry, obtain there is TAC film/gluing oxidant layer/polarizing film layer to constitute
Polarization plates.
(3) production of optical laminate
The TAC film face of the polarization plates obtained in above-mentioned (2) is pressed from both sides across thick 25 μm of sheet adhesive (Lintec (strain)
The trade name " #7 " of system), (Supreme Being people is melted into the polycarbonate membrane of (strain) system, trade name " PURE-ACE RM ", thickness to fitting optical film A
53 μm), obtain optical laminate.The slow axis of optical film A and the absorption axiss angulation θ of polarizing film are set as 45 °.
< embodiment 2~3,1~6 > of comparative example
Other than replacing optical film A and having used following optical films, optics stacking is produced same as Example 1ly
Body.
Embodiment 2: optical film B (TAC film, 43 μm of thickness)
Embodiment 3: (Supreme Being people is melted into the polycarbonate membrane of (strain) system, trade name " PURE-ACE WR ", thickness 53 to optical film C
μm〕
Comparative example 1: optical film D (the cyclic polyolefin film of Japanese Zeon (strain) system, trade name " Zeonor Film
28 μm of ZF35-Film#140 ", thickness)
Comparative example 2: optical film E (the cyclic polyolefin film of Japanese Zeon (strain) system, trade name " Zeonor Film
28 μm of ZF35-Film#110 ", thickness)
Comparative example 3: optical film F (cyclic polyolefin film, 20 μm of thickness)
Comparative example 4: optical film G (the cyclic polyolefin film of Japanese Zeon (strain) system, trade name " Zeonor Film
ZD12 ", 33 μm of thickness)
Comparative example 5: optical film H (polycarbonate membrane of (strain) Kaneka, trade name " RB-Film#130 ", 25 μm of thickness)
Comparative example 6: optical film I (polyester film of Toray (strain) system, trade name " Lumirror4ZY004 ", 5 μm of thickness).
(phase difference characteristics of optical film and the measurement of wavelength dispersion characteristics)
In the environment of 23 DEG C of temperature, relative humidity 55%, the automatic birefringence of machine (strain) system is measured using prince
Instrument (KOBRA-WPR) measures the R of optical film A~I used in Examples and Comparative Examplese(590)、Rth(590)、Re(450)、
Re(550)、Re(630), and R is calculatedth(590)/Re(590)、Re(450)/Re(550)、Re(630)/Re(550).By result
It is shown in table 1.
(evaluations of tone variations)
Referring to Fig. 8 (a) and Fig. 8 (b) of the measurement system for schematically showing tone variations, firstly, will by polarization plates and
The polarization for the optical laminate that optical film is constituted is unilateral, and across thick 25 μm of sheet adhesive, (Lintec (strain) is made with glass plate folder
Trade name " #7 ") fitting, obtain sample for evaluation.Then, which is placed in viewing angle characteristic and measures and evaluates dress
It sets in (trade name " EZContrast " of ELDIM corporation).At this point, according to light source (cold cathode ray), glass plate, polarization
The sample for evaluation that is arranged in order of plate, optical film, acceptance part (camera).In addition, in the optical film and light of optical laminate
Between portion, be configured be envisioned for polarization sunglasses polarization plates so that the absorption axiss of the polarization plates of optical laminate be envisioned for
The absorption axiss for polarizing the polarization plates of sunglasses form Nicol crossed.In any Examples and Comparative Examples, it is contemplated that be inclined
The polarization plates of vibration sunglasses have used the polarization plates made in embodiment 1 (identical as polarization plates contained in optical laminate
Polarization plates).
Device is measured and evaluated using above-mentioned viewing angle characteristic, (x, y) value as CIE-XYZ color specification system determines polar angle
0,10,20,30,40,50,60,70,80 ° when 0,45,90,135,180,225,270,315 ° of azimuth coloration (total 9
× 8=72 point).Hereafter, the maxima and minima of poor Δ x, y of the maxima and minima of the x for this 72 points are found out
Poor Δ y, according to following evaluation criteria, had rated across polarization sunglasses from various according to their aggregate value Δ x+ Δ y
Tone variations when picture are watched in direction (azimuth and polar angle).It the results are shown in Table 1.In addition, each embodiment will be directed to
And the xy chromatic diagram that comparative example obtains is shown in Fig. 9~17.
A: Δ x+ Δ y is less than 0.065
B: Δ x+ Δ y is 0.065 more than and less than 0.100
C: Δ x+ Δ y is 0.100 or more.
[table 1]
The explanation of symbol
1,2,3,4 optical laminate,
10 polarizing films,
The absorption axiss of 10a polarizing film,
20 optical films,
The slow axis of 20a optical film,
25 first adhesive phases or gluing oxidant layer,
30 second adhesive phases,
40 first thermoplastic resin films,
45 the 4th adhesive phases or gluing oxidant layer,
50 third adhesive phases,
60 second thermoplastic resin films,
65 gluing oxidant layer,
70 liquid crystal cells,
80 polarization plates,
85 adhesive phases,
90 backlights
Claims (10)
1. a kind of optical laminate, it includes polarizing film and the optical film being laminated in one face,
The optical film projects after rectilinearly polarized light is transformed to elliptically polarized light, and meets following formula:
(1)100nm≤Re(590)≤180nm、
(2) 0.5 < Rth(590)/Re(590)≤0.8、
(3)0.85≤Re(450)/Re(550) < 1.00 and
(4) 1.00 < Re(630)/Re(550)≤1.1
In formula, Re(590)、Re(450)、Re(550)、Re(630) measurement wavelength 590nm, 450nm, 550nm, 630nm are respectively indicated
When face in phase difference value, Rth(590) thickness direction phase difference value when measurement wavelength 590nm is indicated.
2. optical laminate according to claim 1, wherein
The absorption axiss angulation of the slow axis of the optical film and the polarizing film is 45 ± 20 ° or 135 ± 20 °.
3. optical laminate according to claim 1, wherein
The optical film contain cyclic polyolefin hydrocarbon system resin, polycarbonate-based resin, cellulose-based resin, polyester based resin or
(methyl) acrylic resin.
4. optical laminate according to claim 1, wherein
The optical film is pressed from both sides to be laminated on the polarizing film layer by layer across first adhesive phase or adhesive.
5. optical laminate according to any one of claims 1 to 4, wherein
The also second adhesive phase comprising being laminated on the face with the optical film opposite side of the polarizing film.
6. optical laminate according to any one of claims 1 to 4, wherein
The also thermoplastic resin film comprising being laminated on the face with the optical film opposite side of the polarizing film.
7. optical laminate according to claim 6, wherein
The thermoplastic resin film is phase difference film.
8. optical laminate according to claim 6, wherein
The also third adhesive phase comprising being laminated on the face with the polarizing film opposite side of the thermoplastic resin film.
9. optical laminate according to claim 7, wherein
The also third adhesive phase comprising being laminated on the face with the polarizing film opposite side of the thermoplastic resin film.
10. a kind of image display device has image-displaying member and optical layer according to any one of claims 1 to 9
Stack,
It is image-displaying member side that the optical laminate, which is configured as the polarizing film,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614464.4A CN110346861B (en) | 2014-05-23 | 2015-05-08 | Optical laminate and image display device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-107231 | 2014-05-23 | ||
| JP2014107231 | 2014-05-23 | ||
| PCT/JP2015/063294 WO2015178224A1 (en) | 2014-05-23 | 2015-05-08 | Optical laminate and image display device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910614464.4A Division CN110346861B (en) | 2014-05-23 | 2015-05-08 | Optical laminate and image display device |
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| CN106415339A CN106415339A (en) | 2017-02-15 |
| CN106415339B true CN106415339B (en) | 2019-08-02 |
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| CN201580027106.3A Active CN106415339B (en) | 2014-05-23 | 2015-05-08 | Optical laminate and image display device |
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| JP (1) | JPWO2015178224A1 (en) |
| KR (1) | KR20170012322A (en) |
| CN (2) | CN110346861B (en) |
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| KR102565008B1 (en) * | 2015-11-30 | 2023-08-09 | 닛토덴코 가부시키가이샤 | Liquid crystal display |
| JP6758148B2 (en) * | 2015-11-30 | 2020-09-23 | 日東電工株式会社 | Liquid crystal display device |
| JP2018036585A (en) * | 2016-09-02 | 2018-03-08 | 日東電工株式会社 | Optical member |
| CN110088652B (en) * | 2016-12-16 | 2021-09-17 | 日东电工株式会社 | Optical laminate, image display device, and method for producing optical laminate |
| JP6935229B2 (en) * | 2017-05-16 | 2021-09-15 | 日東電工株式会社 | Circularly polarizing film, circularly polarizing film with adhesive layer and image display device |
| TWI843713B (en) * | 2018-02-09 | 2024-06-01 | 日商住友化學股份有限公司 | Circularly polarizing plate and optical display device |
| JP7358739B2 (en) * | 2018-03-02 | 2023-10-11 | 住友化学株式会社 | Polarizing plate and polarizing plate manufacturing method |
| JP2020019277A (en) * | 2018-07-24 | 2020-02-06 | 住友化学株式会社 | Laminate and method for manufacturing the same |
| JP7300906B2 (en) * | 2018-11-16 | 2023-06-30 | 住友化学株式会社 | Optical layered body and image display device provided with the same |
| US20220155514A1 (en) * | 2019-03-26 | 2022-05-19 | Toray Industries, Inc. | Laminated body and manufacturing method thereof, light guide plate unit, light source unit, display device, projection image display member, projection image display device, and display screen filter |
| CN113631971A (en) * | 2019-04-02 | 2021-11-09 | 住友化学株式会社 | Optical laminate |
| JP7451922B2 (en) * | 2019-10-02 | 2024-03-19 | 住友化学株式会社 | Self-luminous image display device |
| CN112748601B (en) * | 2019-10-31 | 2024-04-26 | 住友化学株式会社 | Image display device |
| CN115210616B (en) * | 2020-03-05 | 2023-10-13 | 富士胶片株式会社 | Viewing angle control system and image display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2940031B2 (en) | 1989-12-04 | 1999-08-25 | セイコーエプソン株式会社 | Liquid crystal display device |
| JP3459779B2 (en) * | 1998-10-30 | 2003-10-27 | 帝人株式会社 | Phase difference plate |
| US6839103B2 (en) * | 2002-02-28 | 2005-01-04 | Kent State University | Elliptically polarizing plate and liquid crystal display |
| JP2009103900A (en) * | 2007-10-23 | 2009-05-14 | Nitto Denko Corp | Laminated optical film, liquid crystal panel, and liquid crystal display |
| JP4791434B2 (en) * | 2007-11-15 | 2011-10-12 | 日東電工株式会社 | Liquid crystal display |
| JP5131983B2 (en) | 2008-10-06 | 2013-01-30 | 日東電工株式会社 | Optical laminate and image display device |
| JP4888853B2 (en) | 2009-11-12 | 2012-02-29 | 学校法人慶應義塾 | Method for improving visibility of liquid crystal display device, and liquid crystal display device using the same |
| JP2011113018A (en) | 2009-11-30 | 2011-06-09 | Sumitomo Chemical Co Ltd | Polarizing plate and method of manufacturing the same |
| US9243168B2 (en) * | 2009-12-14 | 2016-01-26 | Cheil Industries, Inc. | Adhesive composition and optical member using the same |
| JP5666989B2 (en) * | 2010-06-03 | 2015-02-12 | 株式会社日本触媒 | Optical film and image display device |
| CN102939550B (en) * | 2010-06-03 | 2016-11-23 | 株式会社日本触媒 | Phase retardation film and the image display device possessing this phase retardation film |
| KR101751975B1 (en) * | 2011-04-11 | 2017-06-28 | 동우 화인켐 주식회사 | Composite retardation plate, composite polarizing plate comprising the same and preparation methods for those |
| JP5396439B2 (en) | 2011-07-22 | 2014-01-22 | 学校法人慶應義塾 | Method for improving visibility of liquid crystal display device, and liquid crystal display device using the same |
| JP2013182162A (en) | 2012-03-02 | 2013-09-12 | Sumitomo Chemical Co Ltd | Manufacturing method of polarizing plate |
| JP2013200445A (en) | 2012-03-26 | 2013-10-03 | Sumitomo Chemical Co Ltd | Circularly polarizing plate |
| JP6119109B2 (en) | 2012-04-27 | 2017-04-26 | 住友化学株式会社 | Polarizing plate and liquid crystal display device |
| JP5789564B2 (en) | 2012-06-11 | 2015-10-07 | 学校法人慶應義塾 | Method for improving visibility of liquid crystal display device, and liquid crystal display device using the same |
-
2015
- 2015-05-08 CN CN201910614464.4A patent/CN110346861B/en active Active
- 2015-05-08 KR KR1020167035055A patent/KR20170012322A/en not_active IP Right Cessation
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- 2015-05-08 JP JP2016521034A patent/JPWO2015178224A1/en active Pending
- 2015-05-08 WO PCT/JP2015/063294 patent/WO2015178224A1/en active Application Filing
- 2015-05-15 TW TW104115520A patent/TWI647492B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110346861B (en) | 2021-12-28 |
| CN110346861A (en) | 2019-10-18 |
| TW201546507A (en) | 2015-12-16 |
| JPWO2015178224A1 (en) | 2017-04-20 |
| CN106415339A (en) | 2017-02-15 |
| WO2015178224A1 (en) | 2015-11-26 |
| KR20170012322A (en) | 2017-02-02 |
| TWI647492B (en) | 2019-01-11 |
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