CN106023822A - Oled display device and production method thereof - Google Patents

Abstract

The invention relates to an OLED display device and a production method thereof. The OLED display device includes: an OLED panel (1), a [lambda]/4 phase difference membrane (3) which is bonded to the OLED panel, and a polarizing film (5) which is bonded to the [lambda]/4 phase difference membrane (3), wherein the reflectance measured from the side of hte polarizing film under a SCE (Specular Component Excluded) mode.

Description

OLED display and its manufacture method

Technical field

The present invention relates to eliminate the tone inhomogeneities caused due to scattering and carry out what uniform tone manifested OLED display and its manufacture method.

Background technology

Organic Light Emitting Diode (OLED:Organic Light-Emitting Diode) display device and CRT (cathode ray tube, cathode ray tube) or LCD(Liquid Crystal Display, liquid crystal display) compare, no Be only capable of lightweight and slimming, and there are multiple strong points such as wide angle of visibility, fast response speed, low-power consumption, as under Generation display device and gazed at.

This OLED display is in portable phone, TV, digital camera, camcorder (registered trade mark), calculating The various field such as machine, navigation system uses.

The oled panel constituting OLED display possesses the electrode of anode and negative electrode.Normally, when light externally to During oled panel incidence, reflect light by being in the electrode portion of the Organic Light Emitting Diode of the inside of oled panel.Watch attentively people In the case of OLED display, this reflection light becomes reason, and sensation is dazzled or color changes, and produces contrast ratio reduction etc. Problem.This is because, the slight of reflection light entered in the eyes of people increases, and observation property reduces.

Especially, in the case of whole illuminating OLED, owing to image definition film or the film forming of display image are positioned at image The reflecting electrode of the bottom of definition film, the reflectance of display device self uprises, and its problem becomes deep further.

Therefore, prevent to carry out the reflection of exterior light, it is proposed that the structure of change oled panel or import new layer etc. Diversified method.

In patent documentation 1, forming antireflection film on anode, it is saturating that the material employing of antireflection film has selectivity The glass of penetrating property or resin molding.

In patent documentation 2, it is proposed that oled panel and for seal import between the hermetic sealing substrate of this panel according to Each band selective ground absorbs the method for the material of exterior light.

In patent documentation 3, it is proposed that prominent multiple light scattering dividing plates are set in the inside of oled panel and scattering is covered Cap rock and make the exterior light scattering of reflection suppress the method for reflection of exterior light.Haze value can be used to represent due to material The ratio of the deterioration of the absorbance that diffusion causes, haze value is the biggest, and the ratio of diffused transmission light is the highest, becomes muddy material. In this publication, it is assumed that the haze value (Haze) of cover layer is 5 ~ 30%.

In patent documentation 4, disclose make by bending image definition film and reflect exterior light scattering suppress outside The method of the reflection of portion's light.

There is the situation of the reflection that can not fully suppress exterior light in these methods.Especially, outside utilizing scattering to suppress In the case of the reflection of portion's light, there is the phenomenon that " uneven " such tone is uneven due to above-mentioned scattering.Inhomogeneities It is generically and collectively referred to as the state that the characteristic of picture is uneven, especially, in the case of uneven color, is referred to as tone uneven.Tone is not Uniformly do not illustrate that uniform tone sees face according to each place for picture overall in the case of represent panel with black and white The phenomenon of the difference of color.Such as, it is meant that when being picture entirety by white displays picture entirety can not show identical in vain The phenomenon of color.Such tone non-uniform phenomenon is multiple due to the kind etc. of the problem in manufacturing process or the material constituting panel Various reason and occur.The analysis of this reason is the most difficult.

Utilizing in the method for scattering to suppress the reflection of exterior light, the spy of the reason that tone non-uniform phenomenon occurs Fixed and solution difficulty situation is more.On the other hand, the method for scattering is utilized to be occasionally used for improve OLED display Light efficiency and import the method for light scattering layer in the inside of panel or make the method that light-scattering material contains.

In patent documentation 5, disclose and by possessing in the transmitance substrate of transmission visible ray, visible ray is dissipated The light scattering portion penetrated and the substrate of the transmitance peristome of transmission visible ray are used as the light extraction base of organic electric-field light-emitting element The display device of plate.

In patent documentation 5, it is proposed that have and make the scattering pattern of the light scattering from organic luminous layer releasing and possess The OLED display of multiple dielectric films that the refractive index of adjacent dielectric film is different.

Prior art literature

Patent documentation

Patent documentation 1: KR published patent 2007-0003159 publication；

Patent documentation 2: KR published patent 2011-0011420 publication；

Patent documentation 3: No. 2010/0171106 publication of U.S. Patent Application Publication；

Patent documentation 4: Ebrean Registered Patent 10-0742374 publication；

Patent documentation 5: KR published patent 2005-0013918 publication；

Patent documentation 6: KR published patent 2013-0016937 publication.

The problem that invention is to be solved

But, in above-mentioned prior art, the method utilizing scattering used to improve light efficiency can become more Profoundly there is the main cause of the tone non-uniform phenomenon caused due to the reflection of exterior light.

Summary of the invention

The present invention completes in view of such problem, its object is to offer and can eliminate tone inhomogeneities OLED display and its manufacture method.

For solving the scheme of problem

The result that the present application person are studied in many aspects in order to solve above-mentioned problem is, it was found that anticipate below Think: be not the mode of change structure within oled panel but paste to remove reflection light on the surface of above-mentioned panel The method of light polarizing film and phase retardation film is preferred.The method is compared with the internal structure of change panel, it is possible to easily reduce Tone non-uniform phenomenon.Especially, in the oled panel being laminated with light polarizing film, selected closing with scattering for each structural element The specific parameter of connection, carries out quantizing being controlled by the parameter that this is selected objectively, thereby, it is possible to it is uneven to eliminate tone Even property.

The OLED display of first is characterised by possessing: oled panel；λ/4 phase retardation film, is pasted onto described OLED On panel；And light polarizing film, it is pasted onto on the phase retardation film of described λ/4, from light polarizing film side at SCE(Specular Component Excluded, gets rid of specular component) reflectance that measures under pattern is less than 1.2%.

The OLED display of second is characterised by possessing: the first adhesive, between described oled panel and described λ/ Between 4 phase retardation films；And second adhesive, between described λ/4 phase retardation film and described light polarizing film.

In the 3rd OLED display, it is characterised in that described first adhesive and described second adhesive all comprise Acrylic resin.

The OLED display of the 4th is characterised by, possesses: oled panel；λ/4 phase retardation film, is pasted onto described OLED On panel；And light polarizing film, it is pasted onto on the phase retardation film of described λ/4, from light polarizing film side at SCE(Specular Component Excluded, gets rid of specular component) the reflectance R that measures under pattern_SCEWith from light polarizing film side at SCI(Specular Component Included, comprises specular component) the reflectance R that measures under pattern_SCIRatio R_SCE/R_SCIBelow meeting Relational expression: 0% < R_SCE/R_SCI≤20%。

The OLED display of the 5th is a kind of OLED display, possesses: oled panel；λ/4 phase retardation film, is pasted onto On described oled panel；And light polarizing film, it being pasted onto on the phase retardation film of described λ/4, described OLED display is characterised by, Described λ/4 phase retardation film and described light polarizing film is removed, from the light exit side of described oled panel from described OLED display The reflectance r that surface measures under SCE pattern_SCEWith the reflectance r measured under SCI pattern from this face side_SCIRatio r_SCE/r_SCIMeet following relational expression: 0% < r_SCE/r_SCI≤70%。

The manufacture method of the OLED display of the 6th is, the manufacture method of a kind of OLED display, and described OLED shows Showing device possesses: oled panel；λ/4 phase retardation film, is pasted onto on described oled panel；And light polarizing film, it is pasted onto described λ/4 On phase retardation film, and, from light polarizing film side at SCE(Specular Component Excluded, get rid of specular component) pattern The reflectance of lower mensuration is less than 1.2%, and described manufacture method is characterised by possessing: paste λ/4 phase place on oled panel The operation of difference film；And on the phase retardation film of described λ/4, paste the operation of light polarizing film.

The manufacture method of the OLED display of the 7th is, the manufacture method of a kind of OLED display, and described OLED shows Showing device possesses: oled panel；λ/4 phase retardation film, is pasted onto on described oled panel；And light polarizing film, it is pasted onto described λ/4 On phase retardation film, and, from light polarizing film side at SCE(Specular Component Excluded, get rid of specular component) pattern The reflectance of lower mensuration is less than 1.2%, and described manufacture method is characterised by possessing: paste λ/4 phase contrast in light polarizing film Film makes the operation of circular polarizer；And on oled panel, paste the operation of described circular polarizer.

Invention effect

OLED display according to the present invention, it is possible to eliminate the tone inhomogeneities caused due to scattering and carry out uniform Manifesting of tone.

Accompanying drawing explanation

Fig. 1 is the profilograph of OLED display.

Fig. 2 is layer structure and the figure of its drive circuit of OLED.

Fig. 3 is the profilograph of the sample of the OLED display of checking.

Fig. 4 is the figure of the photo of first, sample ~ 5th.

Fig. 5 is the chart of the data illustrating first, sample ~ 5th.

Fig. 6 is the chart of the data illustrating the 6th ~ the 11st, sample.

Fig. 7 is the chart of the data illustrating the 12nd ~ the 15th, sample.

Detailed description of the invention

Hereinafter, the OLED(Organic Light-Emitting Diode to embodiment, Organic Light Emitting Diode) aobvious Showing device illustrates.Further, same key element is used same reference, and the repetitive description thereof will be omitted.

Fig. 1 is the profilograph of OLED display.

OLED display 10 possesses: oled panel 1, λ/4 phase being bonded on oled panel 1 via the first adhesive 11 Potential difference film 3 and the light polarizing film (polarizing film) 5 being bonded on λ/4 phase retardation film 3 via the second adhesive 12.

Oled panel 1 possesses: the supporting substrates 1a that is made up of glass etc., outer rim along the surface of supporting substrates 1a are arranged Framework dividing plate 1b and clamp the hermetic sealing substrate 1e of framework dividing plate 1b together with supporting substrates 1a, between their substrate airtight Space, in this space, configure multiple light-emitting component.

Supporting substrates 1a is provided with multiple thin film transistor (TFT) Q in a matrix form, via the bag of cladding thin film transistor (TFT) Q Coating 1c is configured with Organic Light Emitting Diode R, G, B according to each pixel.Organic Light Emitting Diode R, G, B are for possessing organic light emission The light emitting diode of layer, constructs according to layer, it is possible to carry out the luminescence of various wavelength.In this example, at organic light emission two Redness, green, blue light filter (color filter) F is possessed between pole pipe R, G, B and hermetic sealing substrate 1e, but, even if These light filters are not had may be used yet.

The space 1d enclosing gas is there is between clad 1c and hermetic sealing substrate 1e, but, by resin in the 1d of this space Also may be used Deng filling.

Applying on hermetic sealing substrate 1e or be laminated with the first adhesive 11, the first adhesive is by λ/4 phase retardation film 3 and sealing The surface of substrate 1e is bonding.Applying or be laminated with the second adhesive 12 on λ/4 phase retardation film 3, the second adhesive 12 is by polarisation Film 5 is bonding with the surface of λ/4 phase retardation film 3.

Light polarizing film 5 is by polarizer 5b, the first transparent protective film 5a of the both sides being arranged on polarizer 5b and the second transparent guarantor Cuticula 5c is constituted.Polarizer 5b is had the polyvinyl alcohol of dichromatic pigment (polyvinyl alcohol) resinoid by gas absorption quantity Constitute.About the first transparent protective film 5a, the second transparent protective film 5c, as long as being the material with defencive function, the most special Do not limit, such as, be made up of polyethylene terephthalate, triacetyl cellulose.

When Organic Light Emitting Diode R, G, B carry out luminescence, its light is successively via film F, hermetic sealing substrate 1e, the first adhesive 11, λ/4 phase retardation film the 3, second adhesive 12, light polarizing film 5 export to outside.

Additionally, from the various part reflection in OLED display of the outside light to external reflection.Especially Ground, about the electrode on the surface being positioned at Organic Light Emitting Diode R, G, B, reflectance is high, therefore, the impact of the reflection thereby resulted in Greatly.

Fig. 2 is layer structure and the figure of its drive circuit of Organic Light Emitting Diode.With above-mentioned Organic Light Emitting Diode R, One of G, B are representative, use reference 10 ' to illustrate.

OLED10 ' possesses: cathode electrode Ec, the electron supplying layer 10a being formed on cathode electrode Ec, luminescent layer 10b, sky Cave transfer layer 10c and anode electrode Ea.When make thin film transistor (TFT) Q for conducting time, to OLED10 ' apply power supply potential Vc with Forward bias voltage between ground connection.When applying forward bias voltage between cathode electrode Ec and anode electrode Ea, electric current Flowing wherein, electronics flows in luminescent layer 10b from cathode electrode Ec, and hole is flowed in luminescent layer 10b from anode electrode Ea Enter, in luminescent layer 10b, electronics and hole further in conjunction with and luminous.As hole transporting layer 10c, it is possible to use aromatic amination Compounds etc., as electron injection material 10a, it is possible to use metal complex species material (tricarboxylic aminomethane (8-hydroxyl quinoline Quinoline) aluminum, furodiazole material (PBD:2-(4-xenyl)-5-phenyl-4-t-butyl phenyl)-1,3,4-oxadiazoles), triazole type Material (TAZ).As luminescent layer 10b, it is possible to use pi-conjugated base polymer, containing pigment polymer etc..Further, conduct , there is various material in the structural material of OLED10 ', the present invention is not limited to these.

Above, as illustrate, OLED display 10 has light polarizing film 5 and is positioned at λ/4 phase place on oled panel 1 The difference film 3 structure between them.Oled panel 1 is not limited to panel disclosed herein, it is possible to application is from the most known Panel.Additionally, oled panel 1 is laminated with anode and negative electrode on substrate, between above-mentioned negative electrode and anode, there is utilization The structure of at least 1 organic thin film layer.About these construct, be the most usually known, therefore, omit about This detailed description.

Further, anode electrode Ea such as comprise ITO, IZO, IGZO, the oxide of stannum, the oxide of zinc, Zinc-aluminium, And the metal-oxide such as titanium nitride lives metal nitride；The metals such as gold, platinum, silver, copper, aluminum, nickel, cobalt, lead, molybdenum, tungsten, tantalum, niobium； The alloy of these metals or the alloy of the iodine compound of copper；Polyaniline, polypyrrole, poly-phenylethylene and poly-(3-methyl thiazolium Fen) etc. at least any one kind of conductive polymer material.Anode electrode also is able to only by any one kind of aforesaid composition Class is formed or is formed by the mixture of multiple materials.It is further possible to formed by identical form or different form many The multi-ply construction that individual layer is constituted.

Cathode electrode Ec can use the material known in the art, does not limit, it is possible to LiF is used as electronics Implanted layer, uses in the negative electrode of the low metal of the work functions such as Al, Ca, Mg, Ag, and preferably Al is preferred.

Organic thin film layer between anode electrode Ea and cathode electrode Ec is in order to realize redness, green, blue sending out Light and comprise luminescent layer 10b, but, in addition, also inject including at least 1 hole injection layer, hole transporting layer, electronics Layer, electron supplying layer.For instance, it is possible to have by anode electrode, hole injection layer, hole transporting layer, luminescent layer, electron transport The lit-par-lit structure that layer, electron injecting layer and cathode electrode are constituted.

About above-mentioned luminescent layer 10b, in addition to the main material as main material, additionally it is possible to use doping (dopant) material, as main material and dopant material, it is known that the material of various kinds, and the present invention is not limited to This.Additionally, about hole injection layer, hole transporting layer, electron supplying layer and electron injecting layer, also know various kind Layer, the present invention is not limited to this.

Additionally, as the type of drive of oled panel 1, there is passive (PM) type and active (AM) type, which can Application.

About anode electrode Ea and the material of cathode electrode Ec, it is possible to use the metals such as gold, silver, copper, aluminum.Such as, making In the case of employing aluminum for anode electrode Ea, anode electrode Ea also serves as the reflecting mirror reflected from outside light Play a role.Cathode electrode Ec is too.The back side of hermetic sealing substrate 1e in FIG (is formed with the phase in the face of adhesive layer 11 The face tossed about) metal film of AM aluminum metallization etc. is to form reflecting mirror, if investigating its optical characteristics, then it is assumed that: about exterior light Reflection, it is shown that the action roughly the same with the situation in OLED display.Therefore, the present application person make such testing Card OLED display and optical characteristics has been carried out wholwe-hearted discussion.

Fig. 3 is the profilograph of the sample of the OLED display of checking.

The OLED display of checking possesses the oled panel 1D of checking to replace oled panel 1.In FIG close The metal film of the back side (being formed with the face of the opposition side in the face of the adhesive layer 11) AM aluminum metallization etc. of envelope substrate 1e, is hypothetically located Reason is Ez for anode electrode Ea and cathode electrode Ec(in figure 3), in the oled panel 1D of checking, eliminate oled panel The remaining key element of 1.

Further, in explanation, there is the situation quoting following 3 (formula 1) ~ (formula 3).

(formula 1): R_SCE≤1.2%。

(formula 2): 0% < R_SCE/R_SCI≤20%。

(formula 3): 0% < r_SCE/r_SCI≤70%。

(formula 1) shows: possess: above-mentioned oled panel 1, λ/4 phase retardation film 3 being pasted onto on oled panel 1 and The light polarizing film 5 being pasted onto on λ/4 phase retardation film 3, from light polarizing film 5 side at SCE(Specular Component Excluded, row Except specular component) the reflectance R that measures under pattern_SCEIt is less than 1.2%.

(formula 2) is to possess: above-mentioned oled panel 1, λ/4 phase retardation film 3 being pasted onto on oled panel 1 and stickup Light polarizing film 5 on λ/4 phase retardation film 3, from light polarizing film 5 side at SCE(Specular Component Excluded, gets rid of mirror Face component) the reflectance R that measures under pattern_SCEWith from light polarizing film 5 side at SCI(Specular Component Included, bag Containing specular component) the reflectance R that measures under pattern_SCIRatio R_SCE/R_SCIThe relational expression met.

On the other hand, (formula 3) removes λ/4 phase retardation film 3 and light polarizing film 5 and from oled panel 1(1D from this state) The reflectance r that the surface (plane of incidence of exterior light) of light exit side measures under SCE pattern_SCEWith from this face side in SCI pattern The reflectance r of lower mensuration_SCIRatio r_SCE/r_SCIThe relational expression met.By meeting the relational expression of these (formulas 1) ~ (formula 3) Any 1 or 2 or whole, thus improve tone inhomogeneities (irregular colour phenomenon).Preferably meet these (formulas 1) ~ (formula 1) among the relational expression of (formula 3), more preferably meets (formula 1) and satisfied (formula 2), (formula 3) or (formula 2) and (formula 3) double Side.

In affecting the main cause of inhomogeneities of tone, there is (A) light polarizing film 5, (B) λ/4 phase retardation film 3, (C) One adhesive 11 and the second adhesive 12, (D) supporting substrates 1e, (E) are as the metal film of anode electrode Ea or metal sheet.

Hereinafter, together with each key element (A) ~ (E), above-mentioned (formula 1) ~ (formula 3) and the relation of tone inhomogeneities are said Bright.

(A) light polarizing film 5

(A-1) characteristic of light polarizing film

Light polarizing film 5 is undertaken and will be transformed to rectilinearly polarized light from the natural light (exterior light) of external incident and cut off from oled panel Reflection light suppress the effect of reflection of exterior light.Monomer transmission is there is with the parameter of the feature association of the optics of light polarizing film 5 Rate (Ty), parallel transmission (Tp), orthogonal transmission (Tc), degree of polarization, a*, b* etc..

Above-mentioned light polarizing film 5 is laminated on oled panel 1 together with above-mentioned effect, accordingly, it would be desirable in view of from The outgoing efficiency of the light of oled panel 1 considers monomer absorbance (Ty), and OLED display 10 needs consider and adjust b* value, To allow to manifest the blueness of distinctness.

(A-2) monomer absorbance (Ty)

Monomer absorbance (Ty) % of light polarizing film 5 is 50% in theoretical value, in order to meet above-mentioned (formula 2), preferably meet below Relational expression.

40%≤Ty≤44.95%。

Just in case, when the numerical range of this Ty is less than the lower limit of the scope of aforesaid relational expression, in order to obtain fixing water Accurate above brightness, needs to improve the output of oled panel 1, as a result of which it is, the luminescent lifetime of OLED display reduces.This Outward, in the case of the numerical range of Ty is bigger than the higher limit of the scope of aforesaid relational expression, it is impossible to exterior light is fully converted For rectilinearly polarized light, the reflectance that there is exterior light uprises such problem.

(A-3) b* value

About b* value, there is negative numerical value, blueness is shown, there is positive numerical value, yellow is shown.About The b* value of light polarizing film 5, is preferably used orthogonal b* value.Preferably, about the light polarizing film 5 of the present invention, in order to meet (formula 2), just B* value is handed over to the following is preferred for more than-15 0.That is, for following relational expression.

-15≤b*≤0。

In the case of the value that b* value is bigger than 0 (for example,+5), distinct blue realization is difficult, at ratio-15 In the case of little value, produce the problem that the reflectance of exterior light uprises, therefore, adjust in the way of meeting above-mentioned scope Joint.

In light polarizing film 5, there is preferred scope and the preferred scope of orthogonal b* value of monomer absorbance (Ty), but It is preferably to meet at least any one preferred scope, more preferably meet the preferred scope of both sides.

Light polarizing film 5 is generally made up of the transparent protective film of polarizer He its both sides.

(A-4) polarizer in light polarizing film

Material as the polarizer in light polarizing film, it is possible to use following material.

As described above, the polarizer constituting light polarizing film is to make dichromatic pigment gas absorption quantity in the polyethylene of uniaxial extension Polarizer after alcohol resin film.These polyvinyl alcohol resins can also be denatured, such as, it is also possible to uses and is become by aldehydes Polyvinyl formal after property, Pioloform, polyvinyl acetal, polyvinyl butyral resin etc..

Film after being filmed such polyvinyl alcohol resin is used as the coiled material film of light polarizing film.To polyvinyl alcohol Method that resin is filmed also is not specifically limited, it is possible to use known suitable method to carry out masking.By polyethylene The thickness of coiled material film that alcohol resinoid is constituted also is not specifically limited, but, about for example, 10 ~ 150 μm.Generally, with web-like Supply, thickness is in the range of 20 ~ 100 μm, in the range of preferably 30 ~ 80 μm, additionally, the width industrially used is In the range of 1500 ~ 6000mm.

Commercially available polyvinyl alcohol film (vinylon VF-PS#7500, KURARAY system/OPL film M-7500, Japan's synthesis System) coil thickness there is 75 μm etc., (vinylon VF-PS#6000, KURARAY system, vinylon VF-PE#6000, KURARAY System) coil thickness there are 60 μm etc..

Light polarizing film is generally via using dichromatic pigment that polyvinyl alcohol resin film is carried out dyeing to make dichromatic pigment The operation (dyeing treatment process) adsorbed, the polyvinyl alcohol resin film being adsorbed with dichromatic pigment by boric acid aqueous solution process The operation (science and engineering at washing washed of operation (boric acid treatment process) and carrying out after the process utilizing this boric acid aqueous solution Sequence) manufacture.

Additionally, when the manufacture of light polarizing film, generally, uniaxial extension polyvinyl alcohol resin film, but, this uniaxial extension is also Can dyeing treatment process before carry out, it is also possible to dyeing treatment process in carry out, it is also possible to dyeing treatment process it After carry out.In the case of carrying out uniaxial extension after dyeing treatment process, this uniaxial extension can also be in boric acid treatment process Carry out, it is also possible to carry out in boric acid treatment process before.Of course it is also possible to carry out uniaxial extension in these multiple stages.

Dyeing treatment process in polyvinyl alcohol resin film utilize the dyeing of dichromatic pigment such as by by poly-second Enol resin film is impregnated in the aqueous solution containing dichromatic pigment and carries out.As dichromatic pigment, such as, use iodine, Dichroic dye etc..In dichroic dye, such as, comprise by C.I. the reddest (C.I.DIRECT RED) 39 double couple gallium such as grade The dichroic dye that compound is constituted, the dichroic dye that is made up of compounds such as trisazo-, four azos (tetrakis azo).Again Have, about polyvinyl alcohol resin film, it is preferred that before dyeing processes, implement the impregnation process to water.

In the case of using iodine as dichromatic pigment, generally use polyvinyl alcohol resin film immersion to containing The method dyeed in the aqueous solution of iodine and potassium iodide.About the amount of the iodine in this aqueous solution, the most every water 100 weight portion And be 0.01 ~ 1 weight portion, about the amount of potassium iodide, generally every water 100 weight portion and be 0.5 ~ 20 weight portion.In conduct Dichromatic pigment and in the case of using iodine, the temperature for the aqueous solution of dyeing is usually 20 ~ 40 DEG C, to the leaching of this aqueous solution Usually 20 ~ 1800 seconds stain time (dyeing time).

On the other hand, in the case of using dichroic dye as dichromatic pigment, generally use polyvinyl alcohol Resin film is impregnated in the aqueous solution comprising dichroic dye the method dyeed.About the dichroic dye in this aqueous solution Amount, generally every water 100 weight portion and be 1 × 10^-4~ 10 weight portions, preferably 1 × 10^-3~ 1 weight portion, the most excellent Choosing is 1 × 10^-3~1×10^-2Weight portion.This aqueous solution can also be used as dyeing assistant containing inorganic salts such as sodium sulfate.? In the case of using dichroic dye as dichromatic pigment, the temperature for the aqueous dye solutions of dyeing is usually 20 ~ 80 DEG C, additionally, be usually 10 ~ 1800 seconds to the dip time (dyeing time) of this aqueous solution.

Boric acid treatment process by by by the polyvinyl alcohol resin film immersion after dichromatic pigment dyeing to containing boric acid Aqueous solution is carried out.About the amount containing the boric acid in boric acid aqueous solution, every water 100 weight portion and usually 2 ~ 15 weight Part, preferably 5 ~ 12 weight portions.The situation of iodine is being employed as the dichromatic pigment in above-mentioned dyeing treatment process Under, preferably comprise potassium iodide for this boric acid treatment process containing boric acid aqueous solution.In this case, about containing boric acid water The amount of the potassium iodide in solution, every water 100 weight portion and usually 0.11 ~ 15 weight portion, preferably 5 ~ 12 weight portions.Xiang Han The dip time having boric acid aqueous solution is usually 60 ~ 1200 seconds, preferably 150 ~ 600 seconds, and then preferably 200 ~ 400 Second.Temperature containing boric acid aqueous solution is usually more than 40 DEG C, preferably 50 ~ 85 DEG C, more preferably 55 ~ 75 DEG C.

In ensuing washing treatment process, by the polyvinyl alcohol resin film immersion after above-mentioned boric acid is processed Washing process is carried out in such as water.The temperature of the water in washing process is usually 4 ~ 40 DEG C, and dip time is usually 1 ~ 120 Second.Washing generally implements dried after processing, and obtains light polarizing film.About dried, for example, it is preferable to use hot air drying Machine, far infra-red heater etc. are carried out.The temperature of dried is usually 30 ~ 100 DEG C, preferably 50 ~ 80 DEG C.It is dried place The time of reason is usually 60 ~ 600 seconds, preferably 120 ~ 600 seconds.

Like this, to polyvinyl alcohol resin film implement uniaxial extension, utilize the dyeing of dichromatic pigment, boric acid process and Washing processes, and obtains light polarizing film.The thickness of this light polarizing film is usually in the range of 5 ~ 50 μm.

(A-5) transparent protective film in light polarizing film

About transparent protective film, owing to polarizer is the most weak, so using to protect it.Moisture permeability is owing to being formed thoroughly The kind of the resin of bright protecting film and different, it is possible to according to the transparency, mechanical strength, heat stability, moisture shielding and each Select to use to the same sex.As forming the material of above-mentioned transparent protective film, do not limited, if be in this field known in Material, then which can use.

The thickness of above-mentioned transparent protective film is also not limited, but, in the case of the thinnest, intensity and processability fall Low, when the thickest, there is the problem that transparency reduces.As long as the thickness of these transparent protective films is below 5 ~ 200 μm, preferably It is below 10 ~ 150 μm, below more preferably 20 ~ 100 μm.

Transparent protective film as above-mentioned polarizer, it is possible to use bonding agent or adhesive.As bonding agent, such as, Exist solvent type adhesive, emulsion-type adhesive, pressure adhesive, no-solvent type bonding agent, membranaceous bonding agent, heat molten type glue Connect agent etc..As one of preferred bonding agent, there is water class bonding agent (water-based adhesive) will bonding agent Material dissolution or be distributed in water.Water class bonding agent can engage polarizer and transparent protective film, optical absorbance fully Outstanding, as long as no the change to yellow coloring etc., its kind is had no particular limits.Such as, there is polyvinyl alcohol tree Fat or there is the polyurethane based resin of hydrophilic group.Water class bonding agent can be with the interpolation added in the raw material being mixed into bonding agent Agent mixes with water together modulates.The commercial polyethylene alcohol resinoid of water class bonding agent exists and is bought to resell by (company) KURARAY " KL-318 " (trading company) of the carboxylic acid modified polyvinyl alcohol sold etc..

Adhesive as transparent protective film, it is possible to use acrylic compounds, silicon class, rubber-like, urethanes, polyesters or ring The acrylic compounds adhesive of oxygen analog copolymer etc., preferably acrylic copolymer, and then preferably pressure-sensitive is preferred 's.

Transparent protective film can use, to the joint of polarizer, the method the most generally known, such as, exist By wire bar coating (wire bar coating) method, concave surface coating (gravure coating) method, metal mold coating (die Coating) method or nebulization etc. connect to composition surface adhesive-applying or the adhesive of polarizer, transparent protective film or both sides The method closing them.

Additionally, the adhesion strength of the polarizer in order to improve transparent protective film and engaged, it is possible to the table to transparent protective film Face suitably carries out the surfaces such as Cement Composite Treated by Plasma, sided corona treatment, ultraviolet treatment with irradiation, flame treatment, saponification process and processes.

(B) λ/4 phase retardation film 3

(B-1) function of λ/4 phase retardation film and performance

It is laminated in λ/4 phase retardation film 3 of oled panel 1 together with above-mentioned light polarizing film 5 to have and utilize the phase contrast will be from polarisation The rectilinearly polarized light of film 5 is transformed to circularly polarized light (right-hand circularly polarized light or left light) and will be reflected by oled panel 1 Circularly polarized light (left light or right-hand circularly polarized light) is transformed to rectilinearly polarized light (the vibration side of rectilinearly polarized light now again Consistent to the absorption axle with light polarizing film) function.

Further, the manufacture method of OLED display is λ/4 phase place possessing oled panel 1, being pasted onto on oled panel 1 Differ from film 3 and the light polarizing film 5 being pasted onto on λ/4 phase retardation film 3 and from light polarizing film 5 side at SCE(Specular Component Excluded, gets rid of specular component) OLED display that reflectance is less than 1.2% that measures under pattern Manufacture method, it is possible to possess and paste the operation of λ/4 phase retardation film 3 on oled panel 1 and paste on λ/4 phase retardation film 3 The operation of light polarizing film 5.

Additionally, the manufacture method of OLED display is λ/4 phase place possessing oled panel 1, being pasted onto on oled panel 1 Differ from film 3 and the light polarizing film 5 being pasted onto on λ/4 phase retardation film 3 and from light polarizing film 5 side at SCE(Specular Component Excluded, gets rid of specular component) OLED display that reflectance is less than 1.2% that measures under pattern Manufacture method, it is possible to possess and paste λ/4 phase retardation film 3 in light polarizing film 5 to make the operation of circular polarizer and in OLED face The operation of this circular polarizer is pasted on plate 1.

It is the value (Ro) of phase contrast in face with the parameter of the optical feature association of λ/4 phase retardation film 3, in order to OLED shows The reflection of device prevents, and needs the value (Ro) of phase contrast in consideration face.

The value (Ro) of the phase contrast of the mensuration of the 550nm of λ/4 phase retardation film 3 is in the range of 130nm ~ 155nm, preferably 135~150nm.In above-mentioned face the value (Ro) of phase contrast extraneous in the case of, the reflectance of OLED display becomes Height, reflection preventing effect reduces.

In the case of the incident light of wavelength X=550nm, in face, the departure of the phase contrast of generation preferably goes up The scope stated.That is, the phase difference value in the film thickness uniformity height and face of λ/4 phase retardation film 3 is as incident wavelength 550nm In the case of the vicinity of the 137nm of 1/4th, it is believed that do not produce reflection inequality and produce the increase of such reflectance.

(B-2) material of λ/4 phase retardation film

As λ/4 phase retardation film 3, λ/4 that can enumerate the λ/4 liquid crystal overlay utilizing liquid crystal to apply or the extension that utilizes film extend Phase retardation film.As forming the material utilizing λ/4 liquid crystal overlay that liquid crystal apply, for instance, it is possible to use has and can pass through The polymerizable liquid crystal of the polymerism base of heat or photo-crosslinking.The optical characteristics energy of the λ/4 liquid crystal overlay formed by polymerizable liquid crystal Enough state of orientation regulations by polymerizable liquid crystal.

As polymerizable liquid crystal, bar-shaped polymerizable liquid crystal and discoid polymerizable liquid crystal can be enumerated.

Bar-shaped polymerizable liquid crystal carry out relative to base material horizontal alignment or vertical orientated in the case of, this polymerism liquid Brilliant optical axis is consistent with the long axis direction of this polymerizable liquid crystal.

In the case of discoid polymerizable liquid crystal is orientated, the optical axis of this polymerizable liquid crystal is present in relative to this The direction that the disc face of polymerizable liquid crystal is orthogonal.

In order to make by making polymerizable liquid crystal be polymerized and the layer that formed manifests phase contrast in face, as long as making polymerizable liquid crystal edge Suitable direction is orientated.In the case of polymerizable liquid crystal is bar-shaped, make the optical axis of this polymerizable liquid crystal relative to base material Plane is along horizontal alignment, thus, manifests phase contrast in face, and in this case, optical axis direction is consistent with delayed phase direction of principal axis.? Polymerizable liquid crystal be discoid in the case of, by the optical axis of this polymerizable liquid crystal relative to substrate plane along horizontal alignment, thus, Manifesting phase contrast in face, in this case, optical axis is orthogonal with delayed phase axle.Alignment films and the group of polymerizable liquid crystal can be passed through Close the state of orientation adjusting polymerizable liquid crystal.

<polymerizable liquid crystal>

Polymerizable liquid crystal refers to have polymerism base and have the compound of liquid crystal liquid crystal property.Polymerism base means to participate in polyreaction Base, preferably optical polymerism base.Here, optical polymerism base refers to by producing from Photoepolymerizationinitiater initiater described later Active group or acid etc. participate in the base of polyreaction.As polymerism base, can enumerate: vinyl, ethyleneoxy, 1-chlorovinyl, Isopropenyl, 4-vinyl, acryloxy, methacryloxy, Oxyranyle, oxa-ring group etc..Wherein, preferably Acryloxy, methacryloxy, ethyleneoxy, Oxyranyle and oxa-ring group, more preferably acryloxy. The liquid crystal liquid crystal property having about polymerizable liquid crystal, can be thermotropic liquid crystal, it is also possible to be lyotropic liquid crystal, when with the degree of order to thermic When property liquid crystal is classified, can be nematic liquid crystal can also be smectic phase (smectic) liquid crystal.

As the concrete example of polymerizable liquid crystal, can enumerate at liquid crystal that just (liquid crystal just collects committee's meeting, ball kind (strain) Distribution in Heisei on October 30th, 12) " 3. 8. 6 ネ ッ ト ワ Network (complete frame type) ", " 6. 5. 1 liquid crystal material b. Repeatability ネ マ チ ッ Network liquid crystal material " described in compound among there is the compound of polymerism base, Japanese Unexamined Patent Publication 2002- No. 267838 publications, Japanese Unexamined Patent Publication 2005-208415 publication, Japanese Unexamined Patent Publication 2005-208416 publication, Japanese Unexamined Patent Publications 2005-208414 publication, Japanese Unexamined Patent Publication 2006-052001 publication, Japanese Unexamined Patent Publication 2010-270108 publication, Japan spy Open 2010-31223 publication, Japanese Unexamined Patent Publication 2011-6360 publication, Japanese Unexamined Patent Publication 2011-207765 publication, Japanese Unexamined Patent Application Publication 2010-522893 publication, Japanese Unexamined Patent Application Publication 2011-207765 publication, U.S. Patent No. 6,139, No. 771 description, the U.S. Patent the 6th, 203, No. 724 description, U.S. Patent No. 5,567, the polymerizable liquid crystal described in No. 349 publications.

<liquid crystal overlay formation constituent>

By make polymerizable liquid crystal be polymerized and the layer (liquid crystal overlay) that formed generally by by containing the polymerism liquid of more than 1 Brilliant constituent (below, is sometimes referred to as liquid crystal overlay formation constituent.) be coated on base material, alignment films or protective layer And make the polymerization of the polymerizable liquid crystal in obtained film be formed.

Liquid crystal overlay formation constituent generally comprises solvent, as solvent, more preferably can dissolve polymerizable liquid crystal And for the inert solvent of polyreaction of polymerizable liquid crystal.

About the amount of the solvent in liquid crystal overlay formation constituent, generally, relative to amount of solid 100 mass parts And preferably 10 mass parts ~ 10000 mass parts, more preferably 50 mass parts ~ 5000 mass parts.Amount of solid means to be coated with from liquid crystal Coating formation constituent eliminates the summation of the composition of solvent.

The coating of liquid crystal overlay formation constituent is generally by whirl coating, squeezing and pressing method, concave surface coating process, metal Type coating process, slit coating (slit coating) method, the rod print process such as coating process or aniline process such as coating process, application member method etc. Known method is carried out.After coating, generally, the bar that the polymerizable liquid crystal included in obtained coated film is not polymerized Remove solvent under part, thus, form dry coationg.As drying means, natural seasoning, aeration-drying method, heating can be enumerated It is dried and hypobaric drying method.

<base material>

The generally transparent base material of aforementioned substrates.Transparent base means to have the transparency being transmissive to light particularly visible ray Base material, the transparency refers to the characteristic that absorbance is more than 80% for the light throughout wavelength 380 ~ 780nm.As concrete Transparent base, can enumerate translucent resin base material.As constituting the resin of translucent resin base material, can enumerate: polyethylene, poly-third The polyolefin such as alkene；The cyclic olefin resinoids such as bornylene base polymer；Polyvinyl alcohol；Polyethylene terephthalate；Poly-first Base acrylate；Polyacrylate；The cellulose esters such as triacetyl cellulose, diacetyl cellulose, cellulose acetate propionate；Acid Second diester；Merlon；Polysulfones；Polyether sulfone；Polyether-ketone；Polyphenylene sulfide and polyphenylene oxide.From the easness started with or the transparency Viewpoint is set out, preferably polyethylene terephthalate, polymethacrylates, cellulose esters, cyclic olefin resinoid or poly- Carbonic ester.

<alignment films>

Alignment films in the present invention is to instigate polymerizable liquid crystal to be orientated taking of specified force along having of desired direction liquid crystal aligning To film.

As alignment films, preferably there is the coating etc. due to liquid crystal overlay formation constituent and undissolved solvent is resistance to Property has the alignment films of the thermostability in the heat treated of the removing of solvent or the orientation of polymerizable liquid crystal in addition.As so Alignment films, alignment films and the optical alignment film etc. comprising orientation polymer can be enumerated, it is possible to orientation polymer can be formed It is coated on base material with constituent or optical alignment film formation constituent.

As the method that orientation polymer formation constituent or optical alignment film formation constituent are coated on base material, Whirl coating, squeezing and pressing method, concave surface coating process, metal mold coating process, slit coating method, rod coating process, application member method can be enumerated Deng known methods such as the print processes such as coating process or aniline process.In the company by volume to volume described later (Roll to Roll) form In the case of continuous manufacture method manufactures this blooming, in this coating method, generally use the coating of concave surface coating process, metal mold The print process such as method or aniline process.

The thickness of alignment films is usually the scope of the scope of 10nm ~ 10000nm, preferably 10nm ~ 1000nm, more preferably Be below 500nm, and then the scope of preferably 10nm ~ 500nm.

Liquid crystal overlay formation constituent can also comprise reactive additive.

As reactive additive, preferably in its intramolecular, there is the anti-of carbon-to-carbon unsaturated bond and reactive with active hydrogen base Answering property additive.Further, " reactive with active hydrogen base " said here means carboxyl (-COOH), hydroxyl (-OH), amino The base of the active hydrogen such as (-NH2) has the base of reactivity, glycidyl, oxazoline group, carbodiimide-based, ethylene imide Base, imide group base, NCO, Hydrogen thiocyanate (thiocyanate) base, maleic acid anhydride group etc. are its typical example. Carbon-to-carbon unsaturated bond that reactive additive has and the number of reactive with active hydrogen base typically respectively 1 ~ 20, preferably It it is respectively 1 ~ 10.

About liquid crystal overlay formation constituent, preferably contain the levelling agent (leveling of more than a kind Agent).Levelling agent has to be made to carry out the formation of coated with liquid crystal overlay by the mobility adjusting liquid crystal overlay formation constituent The function that the coated film that obtains with constituent is more smooth, specifically, can enumerate surfactant.As levelling agent, preferably from By using polyacrylic acid ester compounds as the levelling agent of main constituent and using containing fluorine atom compound as the levelling agent of main constituent At least one selected in the group constituted.

In the case of liquid crystal overlay formation constituent contains levelling agent, its amount is relative to polymerizable liquid crystal 100 mass parts and more than preferably 0.05 mass parts below 5 mass parts, more than more preferably 0.05 mass parts below 3 mass parts. When the amount of levelling agent is in aforesaid scope, easily make polymerizable liquid crystal horizontal alignment, and, exist obtained λ/ 4 liquid crystal overlays become smoother trend.

Liquid crystal overlay formation constituent preferably comprises more than a kind polymerization initiator.Polymerization initiator is for starting The compound of the polyreaction of polymerizable liquid crystal, can start the aspect of polyreaction, preferably light poly-under conditions of more low temperature Close initiator.Specifically, can enumerate and can produce active group or the Photoepolymerizationinitiater initiater of acid by the effect of light, wherein, also The preferably effect by light produces the Photoepolymerizationinitiater initiater of base.

In the case of liquid crystal overlay formation constituent contains polymerization initiator, its amount can be according to this composition The kind of the polymerizable liquid crystal contained by thing and its amount suitably regulate, but, relative to polymerizable liquid crystal 100 mass parts, preferably 0.1 ~ 30 mass parts, more preferably 0.5 ~ 10 mass parts, and then preferably 0.5 ~ 8 mass parts.Containing of polymerizing initiator As long as in the range of the amount of having is for being somebody's turn to do, then can be polymerized in the case of the orientation not upsetting polymerizable liquid crystal.

In the case of liquid crystal overlay formation constituent contains Photoepolymerizationinitiater initiater, this constituent is possibly together with photosensitizer Also may be used.As photosensitizer, can enumerate: the xanthone compound such as xanthone, thiaxanthone (such as, 2,4-diethyl thioxanthones, ITX etc.)；Anthracene, containing anthracene compounds such as alkoxy anthracene (such as, dibutoxy anthracene etc.)；Phenothiazine and red glimmering Alkene.

In the case of liquid crystal overlay formation constituent contains Photoepolymerizationinitiater initiater and photosensitizer, it is possible to more promoting should The polyreaction of the polymerizable liquid crystal contained by constituent.The usage amount of photosensitizer can be according to Photoepolymerizationinitiater initiater and polymerism The kind of liquid crystal and its amount suitably regulate, but, relative to polymerizable liquid crystal 100 mass parts, preferably 0.1 ~ 30 mass parts, more excellent Choosing is 0.5 ~ 10 mass parts, and then preferably 0.5 ~ 8 mass parts.

In order to more stably make the polyreaction of polymerizable liquid crystal carry out, liquid crystal overlay formation constituent can also contain Have an appropriate polymerization inhibitor, thus, be easily controlled polymerizable liquid crystal polyreaction carry out degree.

As polymerization inhibitor, can enumerate: hydroquinone, containing alkoxyl hydroquinone, containing alkoxyl catechol (example Such as, p-tert-Butylcatechol etc.), 1,2,3,-thrihydroxy-benzene, 2,2,6,6-tetramethyl-1-piperidolate (piperidinyloxy) bases etc. Base supplement；Phenylmercaptan. class；Beta-naphthylamine class and betanaphthol class.

In the case of liquid crystal overlay formation constituent contains polymerization inhibitor, its amount can be according to polymerizable liquid crystal Kind and the suitably regulation such as usage amount of its amount and photosensitizer, but, relative to polymerizable liquid crystal 100 mass parts, preferably 0.1 ~ 30 mass parts, more preferably 0.5 ~ 10 mass parts, and then preferably 0.5 ~ 8 mass parts.The amount of polymerization inhibitor is only In the range of will be for being somebody's turn to do, then can be polymerized in the case of the orientation not upsetting polymerizable liquid crystal.

The polymerization of polymerizable liquid crystal can be carried out by making the known method with the compound polymerization of polymerism base. Specifically, thermal polymerization and photopolymerization can be enumerated, from the viewpoint of the easness of polymerization, preferably photopolymerization.Utilizing photopolymerization In the case of making polymerizable liquid crystal polymerization, coating containing the polymerizable liquid crystal constituent of Photoepolymerizationinitiater initiater, makes to be dried to obtain Polymerizable liquid crystal in dry coationg is liquid crystal phase, and afterwards, carrying out photopolymerization under conditions of keeping this mesomorphic state is Preferably.

The formation of phase retardation film 3 is extended, it is preferred to employ solution embrane method or extrusion moulding manufacture film also about λ/4 And make it extend.λ/4 extend phase retardation film 3 can be by the whole uniaxial extension extended along mechanical processes direction；Edge and mechanical flow The horizontal uniaxial extension that orthogonal direction, the direction of journey extends；Perform vertical and horizontal twin shaft extension etc. to manufacture, preferably simultaneously Application tilts the film extended and also may be used.

At this time point, the material used in extension method is also not limited, specifically, it is possible to use intrinsic birefringence value Manufacture for positive and negative or combinations thereof raw material.Above-mentioned " intrinsic birefringence value is positive material " means have at molecule The order having uniaxiality illustrates the material of positive uniaxiality optically in the case of being orientated.Such as, at positive material resin In the case of, it is meant that the refractive index of the light in the direction that the refractive index ratio of the differently-oriented directivity of molecule is orthogonal with above-mentioned differently-oriented directivity Greatly.

Above-mentioned " intrinsic birefringence value is negative material " means have, at molecule, the feelings that the order of uniaxiality is orientated The material of negative uniaxiality is shown under condition optically.

Such as, in the case of negative material resin, it is meant that the refractive index ratio of the differently-oriented directivity of molecule takes with above-mentioned The refractive index of the light in the direction orthogonal to direction is little.

Specifically, as the material used in extension method, can enumerate: the polyolefin such as polyethylene, polypropylene；Borneolum Syntheticum alkenes The cyclic olefin resinoids such as polymer；Polyvinyl alcohol；Polyethylene terephthalate；Polymethacrylates；Polyacrylic acid Ester；The cellulose esters such as triacetyl cellulose, diacetyl cellulose, cellulose acetate propionate；Acid second diester；Merlon；Poly- Sulfone；Polyether sulfone；Polyether-ketone；Polyphenylene sulfide and polyphenylene oxide.

About the thickness of λ/4 phase retardation film, in the case of the liquid crystal overlay of λ/4, usually below 10 μm, preferably Below 5 μm, more than more preferably 0.5 μm below 5 μm.In the case of λ/4 extend phase retardation film, usually below 100 μm, Below preferably 60 μm, more than more preferably 5 μm below 50 μm.

(C) the first adhesive 11 and the second adhesive 12.

λ/4 phase retardation film 3 and the light polarizing film 5 that are laminated in the oled panel 1 constituting OLED display 10 can be by glutinous Mixture is fitted.About the first adhesive 11 and the second adhesive 12, the transparency of optics is superior, it is shown that comprise suitable coagulation The adhering characteristic of property, cementability etc. is preferred, and especially, superior durability is preferred.As be used for being formed these first With the optimal adhesive of the second adhesive, acrylic compounds, silicon class, rubber-like, urethanes, polyesters or copolymer can be enumerated Deng, preferably acrylic copolymer, and then the acrylic compounds adhesive of preferably pressure-sensitive.It also is able to use bonding agent Replace the second adhesive.

In adhesive, in addition, it is also possible to mix various additive.As concrete additive, can lift Go out silane coupler or charged preventor.Silane coupler pair improves effectively with the cementability of glass, and charged preventor can be Reduce or the generation of suppression electrostatic and utilize.Even if the first and second adhesive layer are being laminated in the method for light polarizing film, only To be commonly used approach in this area, the most also be not particularly restricted.For instance, it is possible to the surface to light polarizing film 5 applies, Dry, stacking adhesive layer formation Liniment.Additionally, use coating same as described above on stripping film after being applied by silicon Method forms adhesive layer and manufactures bonding sheet material, afterwards, it is possible to use these compression bonding apparatus rolled up to carry out stacking.Above-mentioned One and second the thickness of adhesive can be adjusted according to adhesion, usually the situation below more than 3 μm 100 μm is more, It is more than more preferably 3 μm that 20 μm the following is preferred.

As the first adhesive, No. WO2012/173066 described adhesive of International Publication can be enumerated.Specifically, for Following adhesive: containing acrylic resin and spheroidal particle；Acrylic resin is in the refractivity of spheroidal particle The scope less than 0.09 more than 0.01；Acrylic resin is the macromolecule that weight average molecular weight is in the scope of 500,000 ~ 2,000,000 Amount acrylic resin and weight average molecular weight are in the mixture of the low molecular weight propylene acid resin of the scope of thousand ~ 150,000；Close In acrylic resin, the non-volatile amount total weight of this acrylic resin is contained as benchmark this low point of 5 ~ 33 weight % Son amount acrylic resin；The mean diameter of spheroidal particle is in the scope of 5 ~ 15 μm；Relative to aforesaid propylene acid resin not Volatile quantity 100 weight portion and containing 20 ~ 50 weight portions spheroidal particle.

Furthermore it is preferred that following aforementioned adhesion agent: be derived from aforementioned high-molecular-weight propylene acid resin have carbon number amount 1 ~ The amount of the structure unit of (methyl) alkyl acrylate of the alkyl of 14 is 70 ~ 99.8 weight %, and, it is derived from and there is energy The amount of the structure unit of (methyl) acrylic compounds of the polar functional group of enough crosslinkings is 0.2 ~ 10 weight %.

Furthermore it is preferred that following aforementioned adhesion agent: be derived from aforementioned low molecular weight propylene acid resin have carbon number amount 1 ~ The amount of the structure unit of (methyl) alkyl acrylate of the alkyl of 14 is 80 ~ 100 weight %, and, it is derived from that have can The amount of the structure unit of (methyl) acrylic compounds of the polar functional group of crosslinking is 0 ~ 10 weight %.And then, light expands Dissipate property adhesive and can contain isocyanates cross-linking agent.

(D) supporting substrates 1e

Supporting substrates 1e is made up of glass substrate, however, it is possible to think plastic base.The back side is become in order to be pasted by evaporation The metal film of the reflectance coating of side, preferably glass substrate.

(E) as metal film or the metal sheet of anode electrode Ea

About the inequality of reflectance, preferably it is formed uniformly the metal film as anode electrode Ea.About by evaporation shape The thickness of the metal film as anode electrode Ea become, preferably below 500nm.

By above-mentioned structure, in the OLED display being attached to light polarizing film, between light polarizing film 5 and oled panel 1 Containing λ/4 phase retardation film 3, scattering the tone inhomogeneities of the OLED display 10 caused is controlled.

Above, as illustrate, in the OLED display of present embodiment, there is reflector, but it is possible to Realize uniform tone.It is bonded in the OLED display on oled panel 1 at λ/4 phase retardation film 3 and light polarizing film 5, when outward When portion's light enters, it is scattering through and occurs on the surface of panel or the light of internal reflection.The tone of reflection light dissipates due to above-mentioned Penetrate and change.Additionally, the polarization state of reflection light changes and reflects light and do not have uniform tone, according to position, Tone inequality (chrominance non-uniformity, colourity is uneven or is referred to as inequality) shown in the difference of tone Occur.In the case of reflection prevents, it is possible to carry out suppression to a certain degree by the attachment of λ/4 phase retardation film, light polarizing film.

Being light splitting colour difference meter for measuring the device of tone, common light splitting colour difference meter makes the visible region of 380 ~ 780nm Tone in territory is according to CIE(Commission Internationale de l'Eclairage or International Commission on Illumination) Standard observation condition, it is possible to measure XYZ, Yxy, L*a*b*, L*C*h*, Δ E*_ab, the parameter such as reflectance of each wavelength.L* For lightness index, a*, b* are psychometric chroma (psychometric chroma) index.Among these parameters, as with by The numerical value that the tone inhomogeneities that causes in reflection is relevant, selects the visual sense reflectance for CIE1931 standard Observer (luminous reflectance) (or tristimulus values Y of object), application is for measuring the mensuration of above-mentioned visual sense reflectance Pattern establishes new relational expression.About the mensuration of visual sense reflectance, based on international standards such as CIE, ISO, ASTM, DIN and JIS Measure.

Specifically, measure under the observation condition represented by d/8:i and d/8:e.Additionally, d/8:i condition determination represents SCI (Specular Component Included, comprise specular component) pattern, d/8:e condition determination represents SCE(Specular Component Excluded, gets rid of specular component) pattern.About this SCI pattern and SCE pattern, it is possible to use according to positive and negative Penetrate light component (Specular Component, specular component) including without and different modes is measured.

In the case of the object that normal reflection composition is high, become clear in the extreme, therefore, make the eyes of employment can not identify object Tone.Scattered reflection composition is dark compared with normal reflection composition, therefore, uses eyes easily to identify the tone of object.This is, as Really the surface condition of object changes, then the tone of object appears as difference, but, the tone of object does not changes. Normal reflection amount and scattered reflection amount are affected by the surface condition of object, but, if having the object of uniform tone, Overall reflective amount does not changes.Therefore, under SCE pattern, remove normal reflection composition, only measure scattered reflection light, at SCI mould Under formula, measure normal reflection light and scattered reflection light.That is, SCE pattern sees that with observer the viewpoint of the tone of object evaluates tone. When utilizing SCI pattern, the impact that suppression causes due to the state on surface, it is possible to evaluate tone.

Hereinafter, in order to help the understanding of the present invention, point out preferred embodiment, but, embodiment exemplifies the present invention.

<experimental example>

(1) making of scattered reflection body

First, the reflecting mirror of the metal film being made up of at the back side of glass substrate evaporation is prepared aluminum.Further, also be able to replace aluminum and The metals such as evaporation silver make metal film.Glass substrate is the tetragon of thickness 3mm, a size of 295mm × 295mm.Implementing In example, the face with the opposition side, face being formed with metal film on the glass substrate applies with the thickness below 25 μm and comprises scattering The adhesive (light diffusing adhesive, Sumitomo Chemical society system) of particle, made scattered reflection body (reflector first, second Individual, the 3rd).Further, light diffusing adhesive scatters transmission light and is diffused.About this light diffusing adhesive, make The described light diffusing adhesive (constituent) of International Publication WO2012/173066 is reference, it is possible to uses and has each mist The adhesive of angle value.

As further embodiment, in order to use the reflector not scattered, as described above, prepare at glass substrate The reflecting mirror of upper AM aluminum metallization thin film, is not comprising scattering with the thickness coating below 25 μm on the face of evaporation opposition side, face The common adhesive (Sumitomo Chemical society system) of particle, made reflector (reflector the 4th, the 8th, the 9th, the tenth Individual, the 11st, the 14th, the 15th).

And then, the soda-lime glass (soda-lime after made a face the most roughening by blasting treatment It is deposited with, on the coarse face of substrate glass), the metal film being made up of aluminum, is applying on the face of metal film evaporation opposition side, face Do not comprise the common adhesive of scattering particles, made scattered reflection body (reflector the 5th, the 6th, the 7th, the tenth Two, the 13rd).

To at above-mentioned reflector first, second, the mist degree of light diffusing adhesive that uses in the making of the 3rd Value (Haze) is determined.In the mensuration of haze value, employ the haze meter (haze of color society in HM-150(village Meter)).Haze value (Haze)=Td/Tt is the ratio scattering transmission light (Td) among overall transmission light (Tt).Further, this expansion The haze value dissipating property adhesive is asked for according to JIS K 7136:2000 " acquiring method of the mist degree of plastics-transparent material ".Again Having, in whole experiments, temperature during mensuration is 25 DEG C, and humidity is 60%.

When summing up above structure as following.

(first)

The material of substrate: glass

The material of metallic film: aluminum

The kind of adhesive: light diffusing binding agent (* 1)

The haze value of adhesive: 27%

(second)

The material of substrate: glass

The material of metallic film: aluminum

The kind of adhesive: light diffusing binding agent (* 2)

The haze value of adhesive: 34%

(the 3rd)

The material of substrate: glass

The material of metallic film: aluminum

The kind of adhesive: light diffusing binding agent (* 3)

The haze value of adhesive: 52%

(the 4th), (the 8th), (the 9th), (the tenth), (the 11st), (the 14th), (the 15th)

The material of substrate: glass

The material of metallic film: aluminum

The kind of adhesive: common adhesive (* 4)

The haze value of adhesive: 0.1%

(the 5th), (the 6th), (the 7th), (the 12nd), (the 13rd)

The material of substrate: soda-lime glass

The material of metal sheet: aluminum

The kind of adhesive: common adhesive (* 5)

The haze value of adhesive: 0.1%.

(2) tone inhomogeneities is evaluated

λ/4 phase retardation film and light polarizing film are pasted onto on above-mentioned scattered reflection body according to this order.The number of sample and each The sample number of scattered reflection body is identical.That is, scattered reflection body possesses above-mentioned adhesive (being set to the first adhesive) on surface, Therefore, paste λ/4 phase retardation film thereon, on the phase retardation film of λ/4 so that coating adhesive (being set to the second adhesive), at this Light polarizing film is pasted on adhesive.Further, the component of the side of coating adhesive can also be the component contrary with these situations.As with Upper such, in this example, possess and on oled panel, paste the operation of λ/4 phase retardation film and paste partially on the phase retardation film of λ/4 The operation of light film, reflection light comes and goes in the phase retardation film of λ/4, thus, is shielded by light polarizing film, the outgoing of inhibitory reflex light.

Second adhesive is the common adhesive (Sumitomo Chemical society system) not comprising scattering particles, common with above-mentioned Adhesive (* 4) is identical.

Then, the visualization observation of tone inequality under fluorescent lamp in darkroom.In order to obtain tone Uniform photo, uses ccd video camera (Risa-Color(Hi-Land society) in darkroom under fluorescent lamp) have taken photograph Sheet.In fig. 4 it is shown that first ~ the 5th sample of use have taken the figure of the photo on surface.

In the case of first sample, the tone inhomogeneities with visualization is " good ".At second sample In the case of, the tone inhomogeneities with visualization is " good ".Color in the case of the 3rd sample, with visualization Adjusting inhomogeneities is " the poorest ".In the case of the 4th sample, the tone inhomogeneities with visualization is " the best ". In the case of the 5th sample, the tone inhomogeneities with visualization is " poor ".The summary of result figure 5 illustrates.

Further, the index of the tone inhomogeneities of visualization is following such benchmark.

" the best ": visually can't see inequality completely.

" good ": visually can't see inequality.

" the poorest ": visually to see a little inequality.

" poor " is visually usually to see inequality.

(3) relevant parameter of reflector is selected

To the reflectance r under the pattern of the SCE of the scattered reflection body installed before λ/4 phase retardation film and light polarizing film_SCE, SCI mould Reflectance r under formula_SCIIt is determined.About this visual sense reflectance, use spectrophotometer (spectrophotometer) (CM3700D:konicaminolta society system) measures under conditions of D65 standard light or twice observer.Each sample is shown SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI).Being summarised in shown in Fig. 5 ~ Fig. 7 of result.

(SCE/SCI measurement result)

In the case of first sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 33% ".

In the case of second sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 44% ".

In the case of the 3rd sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 61% ".

In the case of the 4th sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 0% ".

In the case of the 5th sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 88% ".

In the case of the 6th sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 56% ".

In the case of the 7th sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 52% ".

In the case of the 8th sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 0% ".

In the case of the 9th sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 0% ".

In the case of the tenth sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 0% ".

In the case of the 11st sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 0% ".

In the case of the 12nd sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is “67.87%”。

In the case of the 13rd sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 70% ".

In the case of the 14th sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 0% ".

In the case of the 15th sample, SCE mode reflection rate/SCI mode reflection rate (r_SCE/r_SCI) it is " 0% ".

Being summarised in shown in Fig. 5 ~ Fig. 7 of result.

(4) relevant parameter of OLED display is selected

To the reflectance under the pattern of the SCE of the scattered reflection body installed after λ/4 phase retardation film and light polarizing film, SCI pattern Under reflectance be determined.About this visual sense reflectance, use spectrophotometer (CM3700D:konicaminolta society System) measure under conditions of D65 standard light or twice observer.The SCE/SCI of each sample is shown.

(SCE/SCI measurement result)

Reflectance R in the case of first sample, under SCE pattern_SCEFor " 0.54% ", SCE mode reflection rate/SCI pattern Reflectance (R_SCE/R_SCI) it is " 9% ".

Reflectance R in the case of second sample, under SCE pattern_SCEFor " 0.66% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 11% ".

Reflectance R in the case of the 3rd sample, under SCE pattern_SCEFor " 0.90% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 15% ".

Reflectance R in the case of the 4th sample, under SCE pattern_SCEFor " 0.03% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 1% ".

Reflectance R in the case of the 5th sample, under SCE pattern_SCEFor " 1.34% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 22% ".

Reflectance R in the case of the 6th sample, under SCE pattern_SCEFor " 1.0% ", SCE mode reflection rate/SCI mould Formula reflectance (R_SCE/R_SCI) it is " 17% ".

Reflectance R in the case of the 7th sample, under SCE pattern_SCEFor " 0.89% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 15% ".

Reflectance R in the case of the 8th sample, under SCE pattern_SCEFor " 0.03% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 1% ".

Reflectance R in the case of the 9th sample, under SCE pattern_SCEFor " 0.03% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 1% ".

Reflectance R in the case of the tenth sample, under SCE pattern_SCEFor " 0.03% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 1% ".

Reflectance R in the case of the 11st sample, under SCE pattern_SCEFor " 0.03% ", SCE mode reflection rate/ SCI mode reflection rate (R_SCE/R_SCI) it is " 1% ".

Reflectance R in the case of the 12nd sample, under SCE pattern_SCEFor " 1.1% ", SCE mode reflection rate/SCI Mode reflection rate (R_SCE/R_SCI) it is " 18.32% ".

Reflectance R in the case of the 13rd sample, under SCE pattern_SCEFor " 1.16% ", SCE mode reflection rate/ SCI mode reflection rate (R_SCE/R_SCI) it is " 19.09% ".

Reflectance R in the case of the 14th sample, under SCE pattern_SCEFor " 0.03% ", SCE mode reflection rate/ SCI mode reflection rate (R_SCE/R_SCI) it is " 1% ".

Reflectance R in the case of the 15th sample, under SCE pattern_SCEFor " 0.03% ", SCE mode reflection rate/ SCI mode reflection rate (R_SCE/R_SCI) it is " 1% ".

That is, as tone inhomogeneities, obtain " good " or " the best " be first, sample, second, the 4th, Eight ~ the 11st, the 14th, the 15th, obtain " the poorest " be the 3rd, sample, the 6th, the 7th, the 12nd Individual, the 13rd.

The material of each key element used in above-mentioned experimental example (embodiment, comparative example) is illustrated.

Further, the detailed material constituting each key element of scattered reflection body is following.

(1) glass substrate

Glass substrate is by mixing and dissolves silica sand (SiO₂), boron oxide (B₂O₃), aluminium oxide (Al₂O₃) obtain.Here, make With commercially available glass substrate (refractive index: 1.50).

(2) metal film (aluminum)

The thickness of the metal film formed by evaporation is 500nm.The reflectance of the glass substrate being formed with metal film is 88.5%。

(3) light diffusing adhesive

Make according to International Publication WO2012/173066

(3-1) details of above-mentioned light diffusing adhesive (* 1):

About the material used in above-mentioned experimental example, specifically, relative to not waving of acrylic resin (refractive index: 1.42) Spheroidal particle (refractive index: 1.49, average diameter: 5 μm) sending out amount 100 weight portions and contain 23 weight portions.Diffusion bonding agent Thickness be 15 μm.

(3-2) details of above-mentioned light diffusing adhesive (* 2):

About the material used in above-mentioned experimental example, specifically, relative to not waving of acrylic resin (refractive index: 1.42) Spheroidal particle (refractive index: 1.49, average diameter: 5 μm) sending out amount 100 weight portions and contain 28 weight portions.Diffusion bonding agent Thickness be 15 μm.

(3-3) details of above-mentioned light diffusing adhesive (* 3):

About the material used in above-mentioned experimental example, specifically, relative to not waving of acrylic resin (refractive index: 1.42) Spheroidal particle (refractive index: 1.49, average diameter: 5 μm) sending out amount 100 weight portions and contain 41 weight portions.Diffusion bonding agent Thickness be 15 μm.

(4) details of common adhesive:

About the material of the common adhesive (* 4) used in above-mentioned experimental example, specifically, for binding from light diffusing Agent (* 1) removes the adhesive after spheroidal particle, and this material is identical with above-mentioned common adhesive (* 5).If further, phase Making spheroidal particle for non-volatile amount 100 weight portion of aforesaid propylene acid resin is below 3 weight portions, then it is assumed that have big Cause same effect.

(5) soda-lime glass

Soda-lime glass substrate is by mixing and dissolves silica sand (SiO₂), sodium carbonate (Na₂CO₃), calcium carbonate Ca₂CO₃) obtain.Tool Body ground, refractive index is 1.52, carries out blasting treatment in a face and in the case of being deposited with 500nm metal film, SCE reflectance is 70.07%。

(6) λ/4 phase retardation film

Further, use AXOSCAN(Axometrics) result that is measured above-mentioned λ/4 phase retardation film is, 550nm situation Under face in phase difference value (Ro) be 144nm.About λ/4 phase retardation film, its wavelength dispersion characteristics (Re(440nm)/Re (550nm) less than more than 0.8 1.0) is met.That is, in the case of light transmission λ/4 phase retardation film in the case of wavelength X=440nm Actual phase contrast relative to the actual phase in the case of light transmission λ/4 phase retardation film in the case of wavelength X=550nm Potential difference is in the scope of less than more than 0.8 1.0.

(7) light polarizing film

About the light polarizing film used in above-mentioned experimental example, employ the light polarizing film of thickness 100 μm, however, it is also possible to use More than 26 μm light polarizing film below 220 μm.V7100 UV-VIS spectrogrph (Jasco society system) is used to measure above-mentioned light polarizing film Result is, monomer absorbance (Ty) is 44.65%, and orthogonal b* is-9.19.About light polarizing film, it is preferred that monomer absorbance (Ty) being less than more than 40% 44.95, orthogonal b* is more than-15 less than 0.

(result and parsing)

First, OLED display possessing oled panel, λ/4 phase retardation film that is pasted onto on oled panel and being pasted onto By utilizing the polarized light mapping function of λ/4 phase retardation film and utilizing light polarizing film in the case of light polarizing film on the phase retardation film of λ/4 The cutting function of light in principle, reflectance is suppressed low.

Then, in OLED display, it is preferred that from light polarizing film side at SCE(Specular Component Excluded, gets rid of specular component) reflectance that measures under pattern is less than 1.2.Therefore, by above-mentioned experiment, anti-at this In the case of the rate of penetrating is less than 1.2%, in the way of using the data proof of first grade of laboratory sample, improve uneven the commenting of reflection Valency.Therefore, know: utilize above-mentioned (formula 1): R_SCE≤ 1.2% improves reflection inequality.

Specifically, reflectance R under the SCE pattern of first, sample_SCEFor " 0.54% ", under the SCE pattern of second, sample Reflectance R_SCEFor " 0.66% ", reflectance R under the SCE pattern that sample is the 3rd_SCEFor " 0.90% ", the SCE mould that sample is the 4th Reflectance R under formula_SCEFor " 0.03% ", reflectance R under the SCE pattern that sample is the 5th_SCEFor " 1.34% ", sample is sextus Reflectance R under SCE pattern_SCEFor " 1.0% ", reflectance R under the SCE pattern that sample is the 7th_SCEFor " 0.89% ", the 8th, sample SCE pattern under reflectance R_SCEFor " 0.03% ", reflectance R under the SCE pattern that sample is the 9th_SCEFor " 0.03% ", sample Reflectance R under the SCE pattern of ten_SCEFor " 0.03% ", reflectance R under the SCE pattern that sample is the 11st_SCEFor " 0.03% ", Reflectance R under sample dozenth SCE pattern_SCEFor " 1.1% ", reflectance R under the SCE pattern that sample is the 13rd_SCEFor " 1.16% ", reflectance R under the SCE pattern that sample is the 14th_SCEFor " 0.03% ", reflect under the SCE pattern that sample is the 15th Rate R_SCEFor " 0.03% ".

Therefore, laboratory sample first ~ 4th, laboratory sample the 6th ~ the 15th meet R_SCE≤1.2%.Additionally, The 14th R of laboratory sample_SCEIt is 1.16%, when second following to arithmetic point rounds up, for R_SCE=1.2%.Again Have, in an embodiment, R_SCELower limit be 0.03%.

Then, in (formula 2): 0% < R_SCE/R_SCIIn the case of≤20%, with use laboratory sample first ~ 4th, the 6th The mode that the individual ~ data of the 15th prove improves the evaluation that above-mentioned reflection is uneven.Further, laboratory sample the 13rd In, R_SCE/R_SCI=19.09%, therefore, when second following to arithmetic point rounds up, R_SCE/R_SCI≤ 19.1% is excellent Choosing.Therefore, know: in the case of (formula 2), improve reflection inequality.Preferred scope is such as sample the first ~ the 4th Individual, the 8th ~ the 11st, the 14th, be 0% < R as shown in the 15th_SCE/R_SCI<15%.Further, in experimental example, R_SCE/R_SCILower limit be 1%.

Similarly, in (formula 3): 0% < r_SCE/r_SCIIn the case of≤70%, with use laboratory sample first, second, Three, the 6th, the 7th, the 12nd, the mode that proves of the data of the 13rd improve the evaluation that above-mentioned reflection is uneven. Therefore, know: in the case of (formula 3), improve reflection inequality.Preferred scope be as laboratory sample first, second, It is 0% < r as shown in the of 6th, the 7th_SCE/r_SCI<60%.Further, in experimental example, r_SCE/r_SCILower limit be 33%.

Additionally, about oled panel 1, the reflectance measured under the SCE pattern of the surface measurements of panel is less than 61% (for example, it is preferable that the 6th, sample.In this case, the evaluation that above-mentioned reflection is uneven is improved.

Additionally, about light polarizing film, it is preferred that monomer absorbance (Ty) is 44% ~ 44.95%, and orthogonal b* value is 0 ~-15.

As above-mentioned, λ/4 phase retardation film 3 and light polarizing film 5 are layered in the OLED display on oled panel 1, with full The mode that reflectance is less than 1.2% that foot measures under SCE pattern from the surface of above-mentioned OLED display adjusts due to scattering The tone inhomogeneities of the OLED display caused.

The explanation of reference

1 ... oled panel, 3 ... λ/4 phase retardation film, 5 ... light polarizing film, 5a ... polarizer, 5b, 5c ... transparent protective film, 10 ... OLED display, 11,12 ... adhesive (layer).

Claims (7)

1. an OLED display, it is characterised in that possess:

Oled panel；

λ/4 phase retardation film, is pasted onto on described oled panel；And

Light polarizing film, is pasted onto on the phase retardation film of described λ/4,

From light polarizing film side at SCE(Specular Component Excluded, get rid of specular component) reflection that measures under pattern Rate is less than 1.2%.

OLED display the most according to claim 1, it is characterised in that possess:

First adhesive, between described oled panel and described λ/4 phase retardation film；And

Second adhesive, between described λ/4 phase retardation film and described light polarizing film.

OLED display the most according to claim 2, it is characterised in that described first adhesive and described second binds Agent all comprises acrylic resin.

4. an OLED display, it is characterised in that possess:

Oled panel；

λ/4 phase retardation film, is pasted onto on described oled panel；And

Light polarizing film, is pasted onto on the phase retardation film of described λ/4,

From light polarizing film side at SCE(Specular Component Excluded, get rid of specular component) reflection that measures under pattern Rate R_SCEWith from light polarizing film side at SCI(Specular Component Included, comprise specular component) measure under pattern Reflectance R_SCIRatio R_SCE/R_SCIMeet following relational expression:

0%<R_SCE/R_SCI≤20%。

5. an OLED display, possesses:

Oled panel；

λ/4 phase retardation film, is pasted onto on described oled panel；And

Light polarizing film, is pasted onto on the phase retardation film of described λ/4,

Described OLED display is characterised by,

Remove described λ/4 phase retardation film and described light polarizing film,

The reflectance r measured under SCE pattern from the surface of the light exit side of described oled panel_SCEWith from this face side at SCI The reflectance r measured under pattern_SCIRatio r_SCE/r_SCIMeet following relational expression:

0%<r_SCE/r_SCI≤70%。

6. a manufacture method for OLED display, described OLED display possesses:

Oled panel；

λ/4 phase retardation film, is pasted onto on described oled panel；And

Light polarizing film, is pasted onto on the phase retardation film of described λ/4, and,

From light polarizing film side at SCE(Specular Component Excluded, get rid of specular component) reflection that measures under pattern Rate is less than 1.2%,

Described manufacture method is characterised by possessing:

Oled panel is pasted the operation of λ/4 phase retardation film；And

Described λ/4 phase retardation film is pasted the operation of light polarizing film.

7. a manufacture method for OLED display, described OLED display possesses:

Oled panel；

λ/4 phase retardation film, is pasted onto on described oled panel；And

Light polarizing film, is pasted onto on the phase retardation film of described λ/4, and,

From light polarizing film side at SCE(Specular Component Excluded, get rid of specular component) reflection that measures under pattern Rate is less than 1.2%,

Described manufacture method is characterised by possessing:

Light polarizing film is pasted λ/4 phase retardation film and makes the operation of circular polarizer；And

Oled panel is pasted the operation of described circular polarizer.