CN108885290A - Polarizing film with optical compensating layer and the organic EL panel for having used the polarizing film - Google Patents
Polarizing film with optical compensating layer and the organic EL panel for having used the polarizing film Download PDFInfo
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- CN108885290A CN108885290A CN201780016125.5A CN201780016125A CN108885290A CN 108885290 A CN108885290 A CN 108885290A CN 201780016125 A CN201780016125 A CN 201780016125A CN 108885290 A CN108885290 A CN 108885290A
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- optical compensating
- compensating layer
- film
- layer
- polarizing film
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- 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
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The tone that the present invention provides inclined direction is the neutral polarizing film with optical compensating layer.Polarizing film with optical compensating layer of the invention is used for organic EL panel.The polarizing film with optical compensating layer has the polarizer and optical compensating layer.Optical compensating layer shows the refractive index characteristic of nx > nz > ny, and meets the relationship of Re (450) < Re (550).One embodiment is that the Re (550) of optical compensating layer is 100nm~180nm and Nz coefficient is 0.3~0.7.One embodiment is the absorption axiss of the polarizer and the slow axis angulation of optical compensating layer is 35 °~55 °.
Description
Technical field
The present invention relates to the polarizing film with optical compensating layer and the organic EL panel of the polarizing film is used.
Background technique
In recent years, as (organic EL is shown the display that is universal and proposing carrying organic EL panel of thin display
Device).Organic EL panel has reflexive high metal layer, thus is easy to produce external light reflection, the problems such as background mirrors.Cause
This, it is known that these problems are prevented by the way that circular polarizing disk is set to visual confirmation side.As conventional circular polarizing disk, it is known to
By phase-contrast film (being typically the plate of λ/4) by its slow axis relative to the polarizer absorption axiss at about 45 ° of angle in a manner of
The circular polarizing disk being laminated.In addition to this, in order to further improve antireflective properties, having carried out stacking has various optics special
The trial of the phase-contrast film (optical compensating layer) of property.However, existing circular polarizing disk is not with the presence of the tone of inclined direction
Desired coloring such problems.
Existing technical literature
Patent document
Patent document 1：No. 3325560 bulletins of Japanese Patent No.
Summary of the invention
Problems to be solved by the invention
The present invention is to complete in order to solve the above-mentioned existing problems, and main purpose is：The color of inclined direction is provided
It is adjusted to the neutral polarizing film with optical compensating layer.
The means used to solve the problem
Polarizing film with optical compensating layer of the invention is used for organic EL panel.The polarizing film tool with optical compensating layer
The standby polarizer and optical compensating layer.The optical compensating layer shows the refractive index characteristic of nx > nz > ny, and meets Re (450)
The relationship of < Re (550).Herein, the light that it is 450nm and 550nm with wavelength at 23 DEG C that Re (450) and Re (550), which is illustrated respectively in,
Phase difference in the face measured.
For an embodiment, the Re (550) of above-mentioned optical compensating layer is 100nm~180nm, and Nz coefficient is
0.3~0.7.
For an embodiment, the slow axis angulation of the absorption axiss of the above-mentioned polarizer and above-mentioned optical compensating layer
It is 35 °~55 °.
According to another aspect of the present invention, organic EL panel is provided.The organic EL panel has above-mentioned band optical compensation
The polarizing film of layer.
Invention effect
According to the present invention, by special using the refractive index for showing nx > nz > ny in the polarizing film with optical compensating layer
Property and show reverse wavelength dispersion characteristic (reverse wavelength dispersion characteristics)
Optical compensating layer, the tone that can obtain inclined direction is the neutral polarizing film with optical compensating layer.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the polarizing film with optical compensating layer of an embodiment of the invention.
Specific embodiment
Hereinafter, being illustrated to the preferred embodiment of the present invention, but the present invention is not limited to these embodiments.
(definition of term and symbol)
Term and symbol in this specification are defined as follows described.
(1) refractive index (nx, ny, nz)
" nx " be face in the maximum direction of refractive index (that is, slow-axis direction) refractive index, " ny " be face in and slow axis just
The refractive index in the direction (that is, fast axis direction) of friendship, " nz " are the refractive index of thickness direction.
(2) phase difference (Re) in face
" Re (λ) " is phase difference in the face obtained at 23 DEG C with the flash ranging that wavelength is λ nm.It is set when by the thickness of layer (film)
When being set to d (nm), Re (λ) is found out by formula Re=(nx-ny) × d.For example, it with wavelength is 550nm that " Re (550) ", which are at 23 DEG C,
The face that obtains of flash ranging in phase difference.
(3) phase difference (Rth) of thickness direction
" Rth (λ) " is the phase difference of the thickness direction obtained at 23 DEG C with the flash ranging that wavelength is λ nm.When by layer (film)
Thickness when being set as d (nm), Rth (λ) is found out by formula Rth=(nx-nz) × d.For example, " Rth (550) " be at 23 DEG C with
Wavelength is the phase difference for the thickness direction that the flash ranging of 550nm obtains.
(4) Nz coefficient
Nz coefficient is found out by Nz=Rth/Re.
(5) substantially orthogonal or parallel
It is 90 ° ± 10 ° that " substantially orthogonal " and " substantially orthogonal " such statement, which includes both direction angulation,
Situation, preferably 90 ° ± 7 °, more preferably 90 ° ± 5 °." substantial parallel " and " substantially parallel " such statement includes two
The case where direction angulation is 0 ° ± 10 °, preferably 0 ° ± 7 °, more preferably 0 ° ± 5 °.In turn, in this specification, when
It may include substantially orthogonal or substantial parallel state when being only called " orthogonal " or " parallel ".
A. the overall structure of the polarizing film with optical compensating layer
Fig. 1 is the schematic cross-sectional view of the polarizing film with optical compensating layer of an embodiment of the invention.This embodiment party
The polarizing film 100 with optical compensating layer of formula has the polarizer 10 and optical compensating layer 30.Consider from practicability, it can example as shown
Protective layer 20 is arranged with 30 opposite side of optical compensating layer in the polarizer 10 like that in son.In addition, the polarizing film with optical compensating layer
Can also have other protective layers (also referred to as inside protective layer) between the polarizer 10 and optical compensating layer 30.With regard to illustrative example
For, inside protective layer is omitted.In this case, optical compensating layer 30 also can be used as inside protective layer and work.When for this
When kind is constituted, the further slimming of the polarizing film with optical compensating layer can be realized.It in turn, as needed can also be in optics
Compensation layer 30 set gradually conductive layer with 10 opposite side of the polarizer (that is, outside of optical compensating layer 30) and substrate (is not schemed
Show).Substrate and the closely sealed stacking of conductive layer.In this specification, " closely sealed stacking " refers to that two layers (such as are not bonded across adhesive layer
Oxidant layer, adhesive phase) and directly and be closely laminated.Conductive layer and substrate typically can be with the stackings of substrate and conductive layer
The polarizing film 100 of the form lead-in zone optical compensating layer of body.By the way that conductive layer and substrate is further arranged, with optical compensating layer
Polarizing film 100 can be suitable for internal touching control panel input and display device.
Optical compensating layer 30 is the relationship that refractive index characteristic shows nx > nz > ny, and has slow axis.Optical compensating layer
30 slow axis and the absorption axiss angulation of the polarizer 10 are preferably 35 °~55 °, more preferably 38 °~52 °, further excellent
It is selected as 42 °~48 °, particularly preferably about 45 °.When above-mentioned angle is such range, it is special to can be realized excellent antireflection
Property.In turn, optical compensating layer 30 meets the relationship of Re (450) < Re (550).That is, optical compensating layer 30 shows phase difference value
The reverse wavelength dispersion characteristic that can become larger with the wavelength of measurement light.Nx > nz > ny is shown by using refractive index characteristic
Relationship and show the optical compensating layer of reverse wavelength dispersion characteristic, can be realized in inclined direction is neutrality (that is, not having
Not desired coloring) tone.Phase difference Re (550) is preferably 100nm~180nm in the face of optical compensating layer 30.Light
The Nz coefficient for learning compensation layer 30 is preferably 0.3~0.7.
Hereinafter, each layer and optical thin film that constitute the polarizing film with optical compensating layer are described in detail.
A-1. the polarizer
As the polarizer 10, any suitable polarizer can be used.For example, the resin film for forming the polarizer can be single
The resin film of layer, or two layers or more of laminated body.
As the specific example for the polarizer being made of the resin film of single layer, can enumerate：To polyvinyl alcohol (PVA)
It is that film, part formalizing PVA system film, vinyl-vinyl acetate copolymer pastern divide the hydrophily of saponified film etc
Macromolecule membrane implements the dyeing processing carried out by the dichroic substance of iodine, dichroic dye etc and stretch processing obtains
The polarizer；The polyene system oriented film etc. of the dehydration treatment of PVA, the dehydrochlorinated products of polyvinyl chloride etc.From optics
, it is preferable to use being dyed as iodine to PVA system film and being risen obtained from being uniaxially stretched from the aspect of excellent
Inclined device.
It is, for example, by being carried out in iodine aqueous solution by PVA system is thin film dipped above by dyeing that iodine carries out.It is above-mentioned
The stretching ratio being uniaxially stretched is preferably 3~7 times.Stretch can dyeing processing after carry out, can also with an Edge Coloring on one side into
Row.Further, it is also possible to be dyed after the stretch.As needed, swelling treatment, crosslinking Treatment, washing are implemented to PVA system film
Processing, drying process etc..For example, can not only be washed by being washed in water by PVA system is thin film dipped before dyeing
Dirt, the antiblocking agent of PVA system film surface, but also PVA system films swell can be made unequal to prevent from dyeing.
As the specific example for using the polarizer obtained from laminated body, can enumerate using resin base material be laminated in
The laminated body or resin base material of the PVA resin (PVA based resin film) of the resin base material and coating are formed in the resin
The polarizer obtained from the laminated body of the PVA resin of substrate.The resin base material is formed in using resin base material and coating
The polarizer obtained from the laminated body of PVA resin can for example make as follows：PVA system resin solution is coated with
In resin base material, it is allowed to dry and forms PVA resin on resin base material, thus obtain resin base material and PVA system resin
The laminated body of layer；The laminated body is stretched and dyed and the polarizer is made in PVA resin.Present embodiment is representative
Ground is to stretch to be stretched including being impregnated in laminated body in boric acid aqueous solution.In turn, stretching can further wrap as needed
Laminated body is stretched in the air with high temperature (such as 95 DEG C or more) before including the stretching in boric acid aqueous solution.Obtained tree
Aliphatic radical material/polarizer laminated body can directly use (i.e., it is possible to using resin base material as the protective layer of the polarizer), can also be with
Resin base material is removed from resin base material/polarizer laminated body, which is laminated corresponding with purpose any suitable
Protective layer come using.The details of the manufacturing method of such polarizer is for example recorded in Japanese Unexamined Patent Publication 2012-73580 public affairs
Report.The whole contents of the bulletin are quoted as reference to this specification.
The thickness of the polarizer is preferably 25 μm hereinafter, more preferably 1 μm~12 μm, further preferably 3 μm~12 μm, special
It You Xuanwei not be 3 μm~8 μm.When the polarizer is with a thickness of such range, curling when heating can be inhibited well, and
Obtain appearance durability when good heating.
The polarizer preferably shows to absorb dichroism in the case where wavelength is any wavelength of 380nm~780nm.The list of the polarizer
Body transmissivity (single layer transmittance) is as described above 43.0%~46.0%, preferably 44.5%~
46.0%.The degree of polarization of the polarizer is preferably 97.0% or more, more preferably 99.0% or more, further preferably 99.9% with
On.
A-2. optical compensating layer
As described above, optical compensating layer 30 is the relationship that refractive index characteristic shows nx > nz > ny.Optical compensating layer
Phase difference Re (550) is preferably 100nm~180nm in face, and more preferably 110nm~170nm, further preferably 120nm~
160nm, particularly preferably 130nm~150nm.When in the face of optical compensating layer phase difference be such range when, by so that
The slow-axis direction of optical compensating layer forms 35 °~55 ° (particularly from about 45 °) relative to the absorption axis direction of the polarizer as described above
The mode of angle set, can be realized excellent antireflective properties.
As described above, optical compensating layer shows reverse wavelength dispersion characteristic.Specifically, phase difference meets Re in face
(450) relationship of < Re (550).In turn, phase difference preferably satisfies the pass of Re (550) < Re (650) in the face of optical compensating layer
System.As described above, by making organic EL panel show the relationship of nx > nz > ny simultaneously using refractive index characteristic with circular polarizing disk
And the optical compensating layer of reverse wavelength dispersion characteristic is shown, can be realized in inclined direction is neutral tone.Re(450)/
Re (550) is preferably 0.8 more than and less than 1, and more preferably 0.8~0.95.Re (550)/Re (650) be preferably 0.8 or more and
Less than 1, more preferably 0.8~0.95.By meeting such relationship, excellent reflection tone can be realized.
The Nz coefficient of optical compensating layer is preferably 0.3~0.7, more preferably 0.4~0.6, further preferably 0.45~
0.55, particularly preferably about 0.5.When Nz coefficient is such range, superior reflection tone can be realized.
Optical compensating layer is that the absolute value of its photoelastic coefficient is preferably 2 × 10-12(m2/ N) more than, more preferably 10 ×
10-12(m2/ N)~100 × 10-12(m2/ N), further preferably 20 × 10-12(m2/ N)~40 × 10-12(m2/N).When photoelastic
When the absolute value of property coefficient is such range, even if small thickness can also ensure that sufficient phase difference, and it has been able to maintain that
The bendability of machine EL panel, and then phase difference caused by stress when can further suppress as being bent changes (the result is that organic
The color change of EL panel).
Optical compensating layer be its water absorption rate be preferably 3% hereinafter, more preferably 2.5% hereinafter, further preferably 2% with
Under.By meeting such water absorption rate, it is able to suppress the ongoing change of display characteristic.In addition, water absorption rate can be according to JIS K
7209 find out.
Optical compensating layer preferably has the barrier property to moisture and gas (such as oxygen).Optical compensating layer is in 40 DEG C, 90%
Moisture-vapor transmission (moisture permeability) under the conditions of RH is preferably less than 1.0 × 10-1g/m2/ 24 hours.It is examined from the viewpoint of barrier property
Consider, the lower the lower limit of moisture permeability the better.Barrier properties for gases of optical compensating layer under the conditions of 60 DEG C, 90%RH be preferably 1.0 ×
10-7g/m2/ 24 hours~0.5g/m2/ 24 hours, more preferably 1.0 × 10-7g/m2/ 24 hours~0.1g/m2/ 24 hours.When
When moisture permeability and barrier properties for gases are such range, in the feelings for being bonded the polarizing film with optical compensating layer with organic EL panel
Under condition, can protect well the organic EL panel from air moisture and oxygen influence.In addition, moisture permeability and gas barrier
Property can be measured according to JIS K 7126-1.
Optical compensating layer is that its glass transition temperature (Tg) is preferably 120 DEG C or more.The lower limit of glass transition temperature
More preferably 125 DEG C or more, further preferably 130 DEG C or more, particularly preferably 135 DEG C or more.On the other hand, vitrifying turns
The upper limit of temperature is preferably 180 DEG C hereinafter, more preferably 165 DEG C or less.Heat resistance has the tendency that variation, it is possible in film
Change in size occurs after molding, also reduces sometimes the picture quality of obtained organic EL panel.In glass transition temperature
In the case where spending height, the case where variation there are forming stability when film forming, there is also the feelings of damage thin-film transparent
Condition.In addition, glass transition temperature is found out according to JIS K 7121 (1987).
Optical compensating layer is typically that the phase difference that is formed by any suitable resin that can be realized above-mentioned characteristic is thin
Film.As the resin of the formation phase-contrast film, such as can enumerate：Polyarylate, polyimides, polyamide, polyester, poly- second
Enol, poly- fumarate, norbornene resin, polycarbonate resin, celluosic resin and polyurethane.These resins can be independent
It uses, can also be applied in combination.Preferably polycarbonate resin or celluosic resin.
Optical compensating layer can for example be formed in the following way：Coating dissolves above-mentioned resin on shrink film
Or coating fluid made of any suitable solvent is scattered in form film, shrink the film.Typically, the contraction of film
It is to be heated to the laminated body of shrink film and film shrink shrink film, shrink film's in this way
It shrinks shrink film.The shrinking percentage of film is preferably 0.50~0.99, and more preferably 0.60~0.98, further preferably
0.70~0.95.Heating temperature is preferably 130 DEG C~170 DEG C, more preferably 150 DEG C~160 DEG C.One embodiment is can also
To be stretched in the direction orthogonal with the shrinkage direction to laminated body when shrinking film.In this case, laminated body
Stretching ratio is preferably 1.01 times~3.0 times, more preferably 1.05 times~2.0 times, further preferably 1.10 times~1.50 times.
As the specific example for the material for constituting shrink film, can enumerate：Polyolefin, polyester, acrylic resin, polyamide,
Polycarbonate, polystyrene, polyvinyl chloride, Vingon, celluosic resin, polyether sulfone, polysulfones, gathers norbornene resin
Acid imide, polyacrylic acid (polyacryl), acetate resins (acetate resin), polyarylate, polyvinyl alcohol, polymerizable mesogenic
Object.These may be used alone, can also be used in combination.Shrink film is preferably the oriented film formed by these materials.
Alternatively, optical compensating layer can be formed in the following way：Using such as acrylic adhesive make shrink film with by
The one or two sides fitting for the film that above-mentioned resin is formed, then heats laminated body shrink the laminated body.
The thickness of optical compensating layer is preferably 10 μm~150 μm.One embodiment is that thickness is more preferably 10 μm~50 μ
M, further preferably 10 μm~30 μm.Another embodiment is that thickness is more preferably 20 μm~70 μm, further preferably 30 μ
M~60 μm.When for such thickness, phase difference and Nz coefficient in above-mentioned desired face can be obtained.
A-3. protective layer
Protective layer 20 is formed by any suitable film that can be used as the protective layer of the polarizer.As the master for becoming the film
The specific example of the material of ingredient is wanted, can be enumerated：The cellulose-based resin of triacetyl cellulose (TAC) etc, Polyester,
Polyethenol series, polycarbonate-based, polyamide-based, polyimides system, polyether sulfone system, polysulfones system, polystyrene, poly- norborneol
The transparent resin etc. of alkene system, polyolefin, (methyl) acrylic acid series, acetic acid esters system etc.Alternatively, it is also possible to enumerate：(first
Base) acrylic acid series, urethanes system, (methyl) urethane acrylate system, epoxy, organic silicon-type etc heat
Gel-type resin or ultraviolet curing resin etc..In addition to this, such as the glass such as siloxane-based polymers can also be enumerated
Matter based polymer.In addition it is also possible to use polymer thin described in Japanese Unexamined Patent Publication 2001-343529 bulletin (WO01/37007)
Film.As the material of the film, the thermoplastic resin that there is substituted or unsubstituted imide containing side chain can be used for example
Rouge and side chain have the resin combination of the thermoplastic resin of substituted or unsubstituted phenyl and itrile group, such as can enumerate
Out：Resin with the alternate copolymer and acrylonitritrile-styrene resin formed by isobutene and N- methylmaleimido
Composition.The thin polymer film for example can be the extrusion molding object of above-mentioned resin combination.
Also it can according to need and hard coating, anti-reflex treated, resistance to bond processing, non-glare treated etc. implemented to protective layer 20
Surface treatment.In turn/alternatively, can also implement to improve visually true across polarized sunglasses progress as needed to protective layer 20
The processing (be typically imparting (ellipse) circularly polarized light function, assign superelevation phase difference) of visual confirmation when recognizing.Pass through reality
Such processing is applied, even if in the case where having carried out visual confirmation to display picture across spreadlight lenses such as polarized sunglasses
It can be realized excellent visual confirmation.Therefore, be equally applicable to can be in outdoor application for the polarizing film with optical compensating layer
Image display device.
The thickness of protective layer 20 is typically 5mm hereinafter, preferably 1mm is hereinafter, more preferably 1 μm~500 μm, into one
Preferably 5 μm~150 μm of step.In addition, in the case where being implemented with surface treatment, protective layer with a thickness of including surface-treated layer
Thickness including thickness.
In the case where being provided with inside protective layer between the polarizer 10 and optical compensating layer 30, the inside protective layer is preferred
For optical isotropy.In this specification, " optical isotropy " refers to that phase difference Re (550) is 0nm~10nm, thickness in face
The phase difference Rth (550) in direction is -10nm~+10nm.As long as inside protective layer optical isotropy can be by arbitrarily fitting
When material constitute.The material can for example be properly selected from above-mentioned material relevant to protective layer 20.
The thickness of inside protective layer is preferably 5 μm~200 μm, more preferably 10 μm~100 μm, further preferably 15 μm
~95 μm.
A-4. conductive layer or the conductive layer with substrate
Conductive layer can by any suitable film build method (such as vacuum vapour deposition, sputtering method, CVD method, ion plating method,
Spray-on process etc.) object film film forming is oxidized metal on any suitable substrate to be formed.It, as needed can also be into after film forming
Row heat treatment (such as 100 DEG C~200 DEG C).By being heated, amorphous film can be made to crystallize.As metal oxygen
Compound, such as can enumerate：Indium oxide, tin oxide, zinc oxide, indium-tin composite oxides, tin-antimony composite oxides, zinc-
Aluminium composite oxide, indium-zinc composite oxide etc..In indium oxide can also doped with bivalent metal ion or tetravalent metal from
Son.Preferably indium system complex oxide, more preferably indium-tin composite oxides (ITO).Indium system complex oxide have it is following this
The feature of sample：There is high-transmission rate (such as 80% or more) at visible light region (380nm~780nm), and per unit area
Sheet resistance value it is low.
In the case where conductive layer includes metal oxide, the thickness of the conductive layer is preferably 50nm hereinafter, more preferably
35nm or less.The lower limit of the thickness of conductive layer is preferably 10nm.
The sheet resistance value of conductive layer is preferably 300 Ω/sq hereinafter, more preferably 150 Ω/sq is hereinafter, further preferably
For 100 Ω/sq or less.
Conductive layer can be transferred to optical compensating layer and separately made with optical compensating layer by conductive layer from above-mentioned substrate
The composition layer of polarizing film can also be used as and the laminated body of substrate (conductive layer with substrate) and optical compensation layer stackup.It represents
Property, as described above, conductive layer and substrate can be with the polarizing films of the form lead-in zone optical compensating layer of the conductive layer of substrate.
As the material for constituting substrate, any suitable resin can be enumerated.Preferably transparent excellent resin.Make
For specific example, can enumerate：Annular ethylene series resin, polycarbonate-based resin, cellulose-based resin, polyester based resin,
Acrylic resin.
It is preferred that above-mentioned substrate is optical isotropy, therefore conductive layer can be with the form of the conductive layer of isotropism substrate
For the polarizing film with optical compensating layer.As the material for constituting optically isotropic substrate (isotropism substrate), such as
Can enumerate using the resin without conjugated system of norbornene resin, olefin-based resin etc as the material of main framing,
With the material of cyclic structure etc. of lactonic ring, glutarimide ring etc in the main chain of acrylic resin.Using this
In the case where the material of sample, it can will show phase difference with the orientation of strand when forming isotropism substrate and inhibit
It is smaller.
The thickness of substrate is preferably 10 μm~200 μm, more preferably 20 μm~60 μm.
A-5. other
When each layer for constituting the polarizing film of the invention with optical compensating layer is laminated, can be used any suitable
Adhesive phase or adhesive layer.Adhesive phase is typically formed by acrylic adhesive.Adhesive layer is typically by gathering
Ethenol system bonding agent is formed.
Although not shown, but 30 side of optical compensating layer of the polarizing film 100 with optical compensating layer can also be provided with bonding
Oxidant layer.By presetting adhesive phase, can be easily bonded with other optical components (such as organic EL units).In addition,
It is preferred that the surface until for use in the adhesive phase is fitted with stripping film.
B. organic EL panel
Organic EL panel of the invention has organic EL units and is set to the visual confirmation side of the organic EL units
The polarizing film with optical compensating layer described in A above-mentioned.Polarizing film with optical compensating layer becomes organic EL with optical compensating layer
Mode (in such a way that the polarizer becomes visual confirmation side) stacking of cell side.
Embodiment
Hereinafter, the present invention is specifically described by embodiment, but the present invention is not limited to the examples.This
Outside, the measuring method of each characteristic is as follows.
(1) thickness
Come using amesdial (PEACOCK company manufactures, ProductName " DG-205 ", dial holder (ProductName " pds-2 "))
It is measured.
(2) phase difference
The sample of 50mm × 50mm is cut into as measurement sample from each optical compensating layer, uses Axometrics company
The Axoscan of manufacture is measured.Measuring wavelength is 450nm, 550nm, and measuring temperature is 23 DEG C.
In addition, mean refractive index is measured using the Abbe refractometer that Ai Tuo company manufactures, by obtained phase difference value
Calculate refractive index nx, ny, nz.
(3) reflection characteristic of inclined direction
It is simulated using the characteristic of the polarizing film with optical compensating layer obtained by embodiment and comparative example.To front
Direction (polar angle is 0 °) and inclined direction (polar angle is 60 °) are evaluated." the LCD that simulation is manufactured using Shintech company
MASTER Ver.6.084".The simulation of reflection characteristic is carried out using the extension function of LCD Master.In more detail, into
The evaluation of row head-on reflection intensity, head-on reflection tone, oblique reflected intensity and oblique tone.Oblique reflected intensity is to polar angle
60 °, azimuth be 45 °, 135 °, 225 ° and 315 ° this 4 points average values evaluated.Head-on reflection tone is to away from neutral point
Δ u'v'(it is neutral) evaluated, gamut Δ u'v' when oblique tone is 60 ° to polar angle, azimuth is 0 °~360 ° is carried out
Evaluation.
[embodiment 1]
(i) production of optical compensating layer
Has stirring wing and control into the batch polymerization of the vertical reactor of 100 DEG C of reflux condenser using comprising two
Device is polymerize.By 9,9- [4- (2- hydroxyl-oxethyl) phenyl] fluorenes (BHEPF), Soquad (ISB), diethylene glycol
(DEG), diphenyl carbonate (DPC) and magnesium acetate 4 hydrate are calculated as BHEPF/ISB/DEG/DPC/ acetic acid according to molar ratio
Magnesium=0.348/0.490/0.162/1.005/1.00 × 10-5Mode put into.Nitrogen is sufficiently carried out in reactor replaces it
(oxygen concentration is 0.0005~0.001 volume %) afterwards, is heated by thermophore, is started at the time of temperature becomes 100 DEG C inside
Stirring.Start that interior temperature is made to reach 220 DEG C after forty minutes in heating, is controlled in a manner of keeping the temperature, start simultaneously at and subtract
Pressure, 90 minutes since reaching 220 DEG C are set as 13.3kPa.By 100 DEG C of the phenol vapor of the by-product importing with polymerization reaction
Reflux condenser, if making the monomer component of dry measure contained in phenol vapor back to reactor, will and uncooled benzene
Phenol steam imports 45 DEG C of condenser to be recycled.
Be allowed to temporarily to restore to after atmospheric pressure importing nitrogen to first reactor, by first reactor through oligomeric
The reaction solution of materialization is transferred to second reactor.Then, start the heating and decompression in second reactor, and set with 50 minutes
It is 240 DEG C, pressure 0.2kPa at interior temperature.Later, the polymerization is continued until becoming defined stirring power.Reaching regulation power
At the time of imported to reactor and nitrogen and restore pressure, the extraction liquid in the form of strands (strand), by rotatably cutting
Machine carries out pelletizing batch, obtains the polycarbonate resin of the copolymerization composition of BHEPF/ISB/DEG=34.8/49.0/16.2 [mol%]
Rouge.The reduced viscosity of the polycarbonate resin is 0.430dL/g, and glass transition temperature is 128 DEG C.
Obtained polycarbonate resin (10kg) is set to be dissolved in methylene chloride (73kg) to prepare coating fluid.Then, will
The coating fluid is coated directly onto shrink film and (is longitudinally uniaxially stretched polypropylene film, Tokyo Printing Ink Mfg Co., Ltd.'s manufacture, product
Name " NOBLEN ") on, the film is 5 minutes dry for 30 DEG C with drying temperature, it is 5 minutes dry with 80 DEG C, it is thin to form shrinkage
Film/birefringent layers laminated body.For obtained laminated body, using simultaneously biaxial drawing machine in the case where draft temperature is 155 DEG C
It is stretched with being 0.80 in the direction MD contraction multiplying power, being 1.3 times in the direction TD, thus forms phase difference on shrink film
Film.Then, which is removed from shrink film.Phase-contrast film with a thickness of 60.0 μm, and Re (550)
=140nm, Nz=0.5, Re (450)/Re (550)=0.89.Using the phase-contrast film as optical compensating layer.
(ii) production of the polarizer
For polyvinyl alcohol (PVA) based resin film (Kuraray manufacture, ProductName " PE3000 ") with a thickness of 30 μm
Long paper, on one side roller stretching machine by make length direction become 5.9 times in a manner of be uniaxially stretched along its length while
Implement swelling, dyeing, crosslinking, carrying out washing treatment simultaneously, finally implements to be dried, thus make the polarizer with a thickness of 12 μm.
Specifically, swelling treatment is that 2.2 times are stretched to while the pure water for passing through 20 DEG C is handled.Then, it contaminates
Color processing is to be adjusted to make the iodine and potassium iodide of the monomer transmissivity 45.0% of the obtained polarizer in iodine concentration on one side
Weight ratio be 1：It is handled in 7 30 DEG C of aqueous solution and is stretched to 1.4 times on one side.In turn, crosslinking Treatment uses two stages
Crosslinking Treatment, the crosslinking Treatment of first stage is on one side in 40 DEG C of aqueous solutions dissolved with boric acid and potassium iodide
Reason is stretched to 1.2 times on one side.The boric acid content of the aqueous solution of the crosslinking Treatment of first stage is set as 5.0 weight %, potassium iodide
Content is set as 3.0 weight %.The crosslinking Treatment of second stage is water-soluble dissolved with boric acid and potassium iodide at 65 DEG C on one side
It is handled in liquid and is stretched to 1.6 times on one side.The boric acid content of the aqueous solution of the crosslinking Treatment of second stage is set as 4.3 weights
% is measured, iodate potassium content is set as 5.0 weight %.In addition, carrying out washing treatment is located by 20 DEG C of potassium iodide aqueous solution
Reason.The iodate potassium content of the aqueous solution of carrying out washing treatment is set as 2.6 weight %.Finally, being dried is allowed to 70 DEG C dry 5
Minute obtains the polarizer.
(iii) production of polarizing film
Across polyethenol series bonding agent, by it is roll-to-roll make to have in the single side of TAC film formed by hard coating
The hard HC-TAC film (thickness for applying (HC) layer：It is 32 μm, corresponding with protective layer) it is bonded with the unilateral side of the above-mentioned polarizer, had
The polarizing film of the strip of matcoveredn/polarizer composition.
(iv) production of the polarizing film with optical compensating layer
Above-mentioned obtained polarizing film and optical compensating layer are cut into predetermined size, make polarizer face and the light of polarizing film
It learns compensation layer to be bonded across acrylic adhesive, obtains that there is the protective layer/polarizer/optical compensating layer composition band optics
The polarizing film of compensation layer.In addition, cutting out for optical compensating layer carries out in the following way：Make polarizing film and optical compensating layer
When fitting, the absorption axiss of the polarizer and the slow axis angulation of optical compensating layer are 45 °.
(v) production of organic EL panel
It is formed and is bonded with acrylic adhesive in the optical compensating layer side of the obtained polarizing film with optical compensating layer
Oxidant layer.
The smart phone (Galaxy-S5) that Samsung wireless company manufactures is decoupled and takes out organic EL panel.It peels off and is somebody's turn to do
The polarization film of organic EL panel fitting, the above-mentioned polarization with optical compensating layer for being formed with adhesive phase is bonded as substitution
Thus piece obtains organic EL panel.
Using the characteristic of the obtained polarizing film with optical compensating layer, the simulation of the reflection characteristic of above-mentioned (3) is carried out.It will
As a result shown in table 1.
[embodiment 2]
In addition to used the phase-contrast film of the acetyl cellulose resins obtained by such as under type as optical compensating layer with
Outside, obtain that there is the protective layer/polarizer/optical compensating layer composition band optical compensating layer in the same manner as example 1
Polarizing film.In turn, it other than having used the polarizing film with optical compensating layer, makes in the same manner as example 1
Organic EL panel.By the obtained polarizing film with optical compensating layer and organic EL panel for evaluation same as Example 1.
Show the result in table 1.
Make shrink film's (biaxially oriented film of PP, with a thickness of 60 μm) of same size using acrylic adhesive
It is bonded with the two sides of acetyl cellulose resins film (220 × 120mm, with a thickness of 50 μm) to obtain laminated body.Later, using point
Batch simultaneously biaxial drawing machine, makes above-mentioned laminated body be contracted to 0.7 times at 120 DEG C, thus makes above-mentioned acetyl cellulose resins
Film shrunk at the same time draws above-mentioned laminated body to the direction orthogonal with the shrinkage direction of above-mentioned acetyl cellulose resins film
2.0 times are extended to, birefringent layers (phase-contrast film) is consequently formed.Then, by above-mentioned phase-contrast film from above-mentioned shrink film
Removing.Above-mentioned phase-contrast film with a thickness of 50 μm, and Re (550)=140nm, Nz=0.5, Re (450)/Re (550)=
0.93.Using the phase-contrast film as optical compensating layer.
[comparative example 1]
Shrink process is implemented to commercially available cyclic olefine film (manufacture of JSR company, ProductName " ARTON "), is showed
The refractive index characteristic of nx > nz > ny and Re (450)/Re (550)=1.00 and Re (550)=140nm phase difference are thin out
Film.In addition to used the phase-contrast film as optical compensating layer other than, obtain in the same manner as example 1 have protection
The polarizing film with optical compensating layer of the layer/polarizer/optical compensating layer composition.In turn, in addition to having used the band optical compensation
Other than the polarizing film of layer, organic EL panel is made in the same manner as example 1.By obtained with the inclined of optical compensating layer
Vibration piece and organic EL panel are for evaluation same as Example 1.Show the result in table 1.
[comparative example 2]
In addition to having used commercially available polycarbonate-based resin film (manufacture of Di Ren company, ProductName " PURE-ACE WR ")
Other than optical compensating layer, obtain that there is the protective layer/polarizer/optical compensating layer structure in the same manner as example 1
At the polarizing film with optical compensating layer.In addition, the film shows the refractive index characteristic of nx > ny=nz, and Re (450)/
Re (550)=0.90 and Re (550)=140nm.In turn, other than having used the polarizing film with optical compensating layer, with
Mode same as Example 1 makes organic EL panel.By obtained polarizing film and organic EL panel with optical compensating layer
For evaluation same as Example 1.Show the result in table 1.
[evaluation]
As shown in Table 1：The polarizing film with optical compensating layer of the embodiment of the present invention can be realized the excellent of inclined direction
Antireflective properties and keep the tone of inclined direction neutral.
INDUSTRIAL APPLICABILITY
Polarizing film with optical compensating layer of the invention is suitably used to organic EL panel.
Symbol description
10 polarizers
20 protective layers
30 optical compensating layers
100 polarizing films with optical compensating layer
Claims (4)
1. a kind of polarizing film with optical compensating layer, is used for organic EL panel,
It has the polarizer and optical compensating layer,
The optical compensating layer shows the refractive index characteristic of nx > nz > ny, and meets the relationship of Re (450) < Re (550),
Wherein, Re (450) and Re (550) is illustrated respectively at 23 DEG C phase in the face that the flash ranging with wavelength for 450nm and 550nm obtains
Potential difference.
2. the polarizing film according to claim 1 with optical compensating layer, wherein the Re (550) of the optical compensating layer is
100nm~180nm, and Nz coefficient is 0.3~0.7.
3. the polarizing film according to claim 1 or 2 with optical compensating layer, wherein the absorption axiss of the polarizer and institute
The slow axis angulation for stating optical compensating layer is 35 °~55 °.
4. a kind of organic EL panel has the polarizing film according to any one of claims 1 to 3 with optical compensating layer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-045832 | 2016-03-09 | ||
| JP2016045832A JP2017161719A (en) | 2016-03-09 | 2016-03-09 | Polarizing plate with optical compensation layer and organic EL panel using the same |
| PCT/JP2017/004533 WO2017154447A1 (en) | 2016-03-09 | 2017-02-08 | Polarizing plate with optical compensation layer, and organic el panel using said polarizing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108885290A true CN108885290A (en) | 2018-11-23 |
Family
ID=59790262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780016125.5A Pending CN108885290A (en) | 2016-03-09 | 2017-02-08 | Polarizing film with optical compensating layer and the organic EL panel for having used the polarizing film |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2017161719A (en) |
| KR (1) | KR20180119588A (en) |
| CN (1) | CN108885290A (en) |
| TW (1) | TW201734518A (en) |
| WO (1) | WO2017154447A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7500531B2 (en) * | 2017-12-19 | 2024-06-17 | 日東電工株式会社 | Phase difference film, polarizing plate with optical compensation layer, image display device, and image display device with touch panel |
| JP7139161B2 (en) * | 2018-06-13 | 2022-09-20 | 日東電工株式会社 | Liquid crystal panel and liquid crystal display device |
| JP6890161B2 (en) * | 2018-10-15 | 2021-06-18 | 日東電工株式会社 | Polarizing plate with retardation layer and image display device using it |
| KR102536728B1 (en) * | 2018-10-15 | 2023-05-26 | 닛토덴코 가부시키가이샤 | Polarizing plate with phase difference layer, and image display device using this |
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| JP2000137116A (en) * | 1998-10-30 | 2000-05-16 | Teijin Ltd | Phase difference plate and liquid crystal display device using the same |
| JP2007219478A (en) * | 2006-01-18 | 2007-08-30 | Nitto Denko Corp | Manufacturing method of optical film, optical film, liquid crystal panel and liquid crystal display device |
| CN100579993C (en) * | 2004-07-16 | 2010-01-13 | 日东电工株式会社 | Phase difference film, use thereof and novel modified polymer |
| CN101930092A (en) * | 2009-06-19 | 2010-12-29 | 日东电工株式会社 | The manufacture method of optical thin film, optical thin film and image display device |
| EP2426526A1 (en) * | 2010-09-03 | 2012-03-07 | Nitto Denko Corporation | Method and apparatus for sequentially laminating optical film including polarizing film, to rectangular-shaped panel |
| JP2015111257A (en) * | 2013-10-28 | 2015-06-18 | 日本ゼオン株式会社 | RESIN FILM, λ/4 PLATE, CIRCULARLY POLARIZING PLATE, ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE, AND MANUFACTURING METHOD |
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| JP2004086328A (en) * | 2002-08-23 | 2004-03-18 | Fuji Photo Film Co Ltd | Touch panel, its manufacturing method, and display device with touch panel |
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| JP3815790B1 (en) * | 2004-07-16 | 2006-08-30 | 日東電工株式会社 | Retardation film, optical film, liquid crystal panel, liquid crystal display device, and image display device |
| CN101473253B (en) * | 2006-06-28 | 2012-05-23 | 夏普株式会社 | Complex birefringent medium, polarizing plate, and liquid crystal device |
| EP2725049A1 (en) * | 2009-11-17 | 2014-04-30 | Mitsubishi Chemical Corporation | Polycarbonate resin and transparent film formed therefrom |
| JP5789963B2 (en) * | 2009-11-30 | 2015-10-07 | 大日本印刷株式会社 | Optical film and touch panel |
| JP4691205B1 (en) * | 2010-09-03 | 2011-06-01 | 日東電工株式会社 | Method for producing optical film laminate including thin high-performance polarizing film |
| JP6651851B2 (en) * | 2013-10-28 | 2020-02-19 | 日本ゼオン株式会社 | Method for producing multilayer film |
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2016
- 2016-03-09 JP JP2016045832A patent/JP2017161719A/en active Pending
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2017
- 2017-02-08 KR KR1020187025337A patent/KR20180119588A/en unknown
- 2017-02-08 WO PCT/JP2017/004533 patent/WO2017154447A1/en active Application Filing
- 2017-02-08 CN CN201780016125.5A patent/CN108885290A/en active Pending
- 2017-03-08 TW TW106107503A patent/TW201734518A/en unknown
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| JP2000137116A (en) * | 1998-10-30 | 2000-05-16 | Teijin Ltd | Phase difference plate and liquid crystal display device using the same |
| CN100579993C (en) * | 2004-07-16 | 2010-01-13 | 日东电工株式会社 | Phase difference film, use thereof and novel modified polymer |
| JP2007219478A (en) * | 2006-01-18 | 2007-08-30 | Nitto Denko Corp | Manufacturing method of optical film, optical film, liquid crystal panel and liquid crystal display device |
| CN101930092A (en) * | 2009-06-19 | 2010-12-29 | 日东电工株式会社 | The manufacture method of optical thin film, optical thin film and image display device |
| EP2426526A1 (en) * | 2010-09-03 | 2012-03-07 | Nitto Denko Corporation | Method and apparatus for sequentially laminating optical film including polarizing film, to rectangular-shaped panel |
| JP2015111257A (en) * | 2013-10-28 | 2015-06-18 | 日本ゼオン株式会社 | RESIN FILM, λ/4 PLATE, CIRCULARLY POLARIZING PLATE, ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE, AND MANUFACTURING METHOD |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20180119588A (en) | 2018-11-02 |
| JP2017161719A (en) | 2017-09-14 |
| TW201734518A (en) | 2017-10-01 |
| WO2017154447A1 (en) | 2017-09-14 |
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