POLYESTER PROTECTIVE FILM FOR MANUFACTURING POLARIZER AND POLARIZER USING SAME

Hereinafter the present invention refers to one super acid catalyst such as hexafluoro more rapidly and to reduce a memory space were as follows..

Respective film elements described in the present invention, film, panel, each, such as a layer or film, film, panel, or, such as a layer of "on (on)" or "(under) the" is formed when described as the, "on (on)" and "(under) the" the "direct (directly)" or "(indirectly) via a another component" includes both of the invention is that the. In addition to/of each component based on the criteria described the accompanying drawing. At each drawing for instructing a the size of the components can be dressed, the size which is applied actually mean all is not.

The present invention refers to polarizing plate protective film in the production of polyester film stretch conditions in certain ranges, a biaxially stretched 2 as to those produced variously so that it, phase difference within a field of view is formed at both sides of the inside phase difference and thickness-direction manufacturing method of polyester excellent physical properties and is characterized in that protective film.

The present invention refers to polyester containing the resin and the, plane phase difference (Ro) is 300 nm hereinafter and, phase difference thickness direction (Rth) is an optically variable security as 3000 nm hereinafter, the metal thin film may be used.

If, in-plane phase difference of 300 nm and problems are greater than, greater than 3000 nm thickness direction problems are phase difference.

A preferred according to an exemplary embodiment of the present invention, said polyester resins aromatic polyester resin may be used.

Such polyester the protective film provides the polarizer of the present invention at least either side by a, is used as attached both surfaces can be.

said protective film provides the, for example a film type polyester resin said extruding melted charge, casting drum cooled a a film is formed is dramatically lowered when material is obtained by method.

In the present invention, by imparting a crystalline polyester film said from the perspective that the communication performance, oriented polyester film, biaxially oriented polyester film 2 of successive approximation can be using. Addition number 1 the liquid cell as a protective film is separated from an aromatic polyester when using a, aromatic polyester film or resin other than etc. additive is may.

'Aromatic polyester mainly in that' show proper adhesiveness, be, film pre-relative to the weight aromatic polyester 50 weight % or more, preferably 60 weight % or more, more preferably 70 weight % or more, preferably 80 weight % or more is..

Said protection films are on the whole polyester resin may be formed as. Said polyester resin said protective film to about 90 wt % or more content. and may be included at. More particularly, said polyester resin said protective film to about 95 wt % or more content. and may be included at. More particularly, said polyester resin said protective film to about 99 wt % or more content. and may be included at.

said protective film provides the stretched film may be, can be formed is stretched axis 2. For example, said protection film should be chosen for, aspect sequential 2 biaxially stretched method, such as biaxially stretched aspect simultaneous 2 which may employ. As means stretched, roll apparatus having spiral grooves on mandrel segments, tenter stretch or pantograph or linear motor 2 of any suitable such as apparatus having spiral grooves on mandrel segments axis an orientated can be produced by.

Said polyester resin non-ethylene glycol diol component and a dicarboxylic acid component. More particularly, generally polyester resin said non-ethylene glycol diol component and said dicarboxylic acid components can be said. More particularly, said polyester resin said about 95 molar % non-ethylene glycol diol component and said dicarboxylic acids may include or more.

Said polyester resin said non-ethylene glycol diol component and said dicarboxylic acid component the esters after exchange reaction, polymerized can be formed.

Said polyester as, for example, terephthalic acid, isophthalic acid, ortho phthalic, 2, 5-naphthalene dicarboxylic acid, 2, 6-naphthalene dicarboxylic acid, 1, 4-naphthalene dicarboxylic acid, 1, 5-naphthalene dicarboxylic acid, [...] , [...] , [...] , anthracene of alkanedicarboxylic, [...] cycle 1, 3-, 1, 3-cyclohexanedicarboxylic acid cycle, cycle 1, 4-cyclohexanedicarboxylic acid, hexahydro terephthalic acid, hexahydro isophthalic acid, malonic acid, dimethyl malonate, succinic acid, 3, 3- d ethyl three new it buys , glutaric, 2, 2-dimethyl glutaric, adipic acid, 2-methyl oh deep it buys the tree methyl Oh deep it buys , the blood it will carry on shoulder and it buys , oh gel line it buys , dimers of more than 98.5% % acid, three basses it buys , suberic acid, such as use of Saccharomyces cerevisiae [...][...] dicarboxylic, propylene glycol, hexamethylene glycol, Neo [...] , 1, 8 880000391888-cyclohexanedimethanol, 1, 4-cyclohexanedimethanol which is applicable to optical applications, [...] , 1, 3-propanediol, 1, 4-butanediol, 1, 5-pentanediol, 1, 6-hexamethylene diol, 2, 2-bis (4-hydroxyphenyl) propane, bis (4-hydroxyphenyl) sulfone such as diol, each 1 species the minute particles are produced by polycondensation with a polymer, or dicarboxylic acid 1 2, a diol at least one the minute particles are produced by polycondensation at least one dicarboxylic acid or copolymers made of at least one at least one diol 1 and 2 the minute particles are produced by polycondensation copolymer and a their a homo-or co-polymer blend resin by blending polypropylene-based 2 a at least one of polyester resin with. The engine thereby for reducing fuel consumption, exhibiting polyester crystallizes into account the, aromatic polyester are preferably present in the salt, polyethylene terephthalate (PET), or polyethylene naphtha rate (PEN) is in particular can be used preferably.

Furthermore, said protective film provides the polarizing layer for the protection in side cookie layer of benzotriazole ultraviolet absorber when subjected to, pen trillion lung rice field orgin ultraviolet absorbents and acrylonitrile ultraviolet absorber such as layer comprises a hole transport layer may further include any.

Furthermore, said protective film provides the 2 layer may have or more features. For example, said protective film provides the substrate film and including of a polyester resin said layer comprises a hole transport layer including may include coating layer.

Furthermore, the protective film, polarizing layer to the same time, can realize good, the adhesion between the material surface corona treatment, coating treatment or flame treatment can be in is performed.

Furthermore, said polarizing layer to improved adhesion with, protective film on at least one side of said, polyester resin, polyurethane resin or polyacrylamide resin at least 1 kind this adhesion layer which contains, as the main component can be formed.

Wherein, 'main component' configured this adhesion layer rotation 50 mass % or more solid components. component out of.

A coating liquid a for use in forming a this adhesion layer said, soluble or water-dispersible copolymerized polyester resin, acrylic resin and polyurethane into a resin to thereby obtain, including at least 1 species to which the coating liquid is preferably aqueous. Said aqueous a coating liquid soluble or water-dispersible copolymerized polyester resin solution, acrylic resin solution, polyurethane resin, use can be made of, solution, or the like, that.

A preferred according to an exemplary embodiment of the present invention, said protective film plane phase difference (Ro) can be about 250 nm hereinafter. More particularly, said protective film plane phase difference can be about 200 nm hereinafter.

A preferred according to an exemplary embodiment of the present invention, in-plane phase difference of 150 nm hereinafter a PVA polarizer protection film can be. More particularly, said protective film plane phase difference can be about 90 nm hereinafter. More particularly, said protective film plane phase difference can be about 80 nm hereinafter. Said protective film plane can be 0 nm about minimum phase difference.

A preferred of the present invention according to an exemplary embodiment, phase difference (Rth) thickness direction of said polyester protective film can be about 2700 nm hereinafter. More particularly, (Rth) phase difference thickness direction of said protective film can be about 2600 nm hereinafter. More particularly, (Rth) phase difference thickness direction of said protective film can be about 2500 nm hereinafter.

Said protective film thickness direction of 1 nm can be about minimum phase difference. More particularly, protective film thickness direction of said phase difference can be about 1 nm to about 2000 nm. More particularly, said protective film thickness direction of about 1 nm to about 1500 nm phase difference can be.

A preferred according to an exemplary embodiment of the present invention, has a thickness of 60 micro m hereinafter PVA polarizer protection film can be.

A more preferred according to an exemplary embodiment of the present invention, micro 40 m hereinafter PVA polarizer protection film has a thickness of. can be.

A more preferred according to an exemplary embodiment of the present invention, has a thickness of 30 micro m hereinafter PVA polarizer protection film can be.

A preferred of the present invention according to an exemplary embodiment, the lowermost segment in the protective film can be micro m and a thickness of from about 5.

A preferred according to an exemplary embodiment of the present invention, to the protective film provides the polyester said satisfies 1 of equations can be a polarizer protection film.

[Expressions 1]

15 ≤ Rth/Ro

Wherein, the Rth and phase thickness direction of said protective film, said protective film plane the Ro. phase difference.

More particularly, said expressions in 1 the Rth/Ro at least 17. More particularly, the Rth/Ro at least 20. Rth/Ro can be about the maximum value of 3000.

The present invention according to a preferred according to an exemplary embodiment, said protective film and the light transmittance of at least 80%. More particularly, said protective film and the light transmittance of at least 85%. More particularly, said protective film and the light transmittance of at least 88%. More particularly, said protective film and the light transmittance of at least 90%.

The present invention according to a preferred according to an exemplary embodiment, said about of cloud on the protective film can be 10% hereinafter. More particularly, said about of cloud on the protective film can be 5% hereinafter. More particularly, said about of cloud on the protective film can be 2% hereinafter.

the present invention according to said protective film provides the polyester resins, because it includes the, high percent transmission, high hydrolysis can take the heat resistance and high.

Furthermore, plane the protective film provides the of the present invention said phase difference is less both phase difference and thickness-direction. Therefore, as observed in side upper part the protective film provides the, rainbow such as spot unevenness and is not is observed. Therefore, the present invention according to said protective film provides the improved optical properties and are, thereby the optimized protective film for polarizing plate can be applied.

In particular, such as said protective film provides the plane phase difference and thickness-direction when phase difference, on which necessary for polarizing plate may have optimal optical properties.

Then the protective film provides the polyester the present invention according to said-deposited on a can be produced by.

The present invention refers to said polyester for making the film a super acid catalyst such as hexafluoro preferred,

Polyester resin made by extruding a undrawn for producing sheets of step;

Said undrawn sheet comprises stretching axis 2 ; and

Said 2 biaxially stretched polyester via sheet with heat fixing includes includes a rotary metal, said polyester film has in-plane phase difference of 300 nm hereinafter and, protection film thickness direction phase difference 3000 nm hereinafter includes manufacturing method.

First, said polyester resin is is produced. Said polyester resin a previous invention as described above wherein, said non-ethylene glycol diol component and said dicarboxylic [...] by and polymerization reaction can be formed.

According to the present invention, a melt extruded polyester resin said and cooled, is undrawn sheet is made. After, said undrawn sheet stretched in one direction in the lateral orientation direction and scene orientation is provided which reduces bowing phenomenon, said protective film is heat-set can be produced.

The extrusion melt said is effected at a temperatures Tm+60 °C to Tm+30 it is preferable that the. Melt extrusion process when less than Tm+30 °C is temperature of extruded in, smooth molten fuel flowing out by passing through the extrusion the viscosity of the sprayed by the same method as and productivity, when a Tm+60 °C vice versa, wherein the molecular weight of resin plus the depolymerization by pyrolysis vertically to the oligomers can generate a. Furthermore, said cooling is effected at a temperatures 30 °C hereinafter it is preferable that the, more preferably 15 to 30 °C can take place at.

Undrawn said biaxially sheet may be stretched by drawing.

A super acid catalyst such as hexafluoro according to the present invention, number 1 number 2 direction and said undrawn sheet an orientated similar direction may be stretch ratio. For example, said number 1 direction said undrawn sheet stretched back about 2.5 times to about 6, said number 2 6 100 2.5 direction may be stretched back. More particularly, said number 1 direction said undrawn sheet stretched back about 3.5 times to about 6, about 3.5 times to about 6 times number 2 direction may be stretched.

Said number 1 direction and said number 2 direction can be perpendicular to each other. Said number 1 and has a machine direction direction, said number 2. can be tenter direction. Is in contrast to a spatially-, said number 1 and direction tenter direction, said number 2 can be has a machine direction direction.

According to the present invention, said protective film provides the lateral orientation is provided which reduces bowing scene direction than in the lateral orientation direction can be stretched more. More particularly, said protective film provides the lateral orientation is provided which reduces bowing scene direction about 2.5 times to about 6 times stretched, in the lateral orientation direction 100 2.5 can be stretched back 6. More particularly, said protective film provides the lateral orientation is provided which reduces bowing scene direction stretched back about 3.5 times to about 6, about 3.5 times to about 6 in the lateral orientation direction can be stretched back.

A preferred according to an exemplary embodiment of the present invention, said polyester the protective film provides the undrawn sheet 2 of equations from a on the a stretch ratio can be produced.

[Expressions 2]

0.8≤TD MD≤ 1.4/

Wherein, the orientation is provided which reduces bowing phenomenon scene MD expense and stretch direction, in the lateral orientation said is non stretched to orient at the TD.

By the first deoxygenator a preferred embodiment more of the present invention, about TD/MD in said 2 expressions can be 0.9 to about 1.2. More particularly, about TD/MD can be 0.95 to about 1.1.

A preferred according to an exemplary embodiment of the present invention, scene orientation is provided which reduces bowing phenomenon said undrawn sheet stretched back 6 100 2.5 direction, in the lateral orientation direction is stretched back 6 100 2.5, said expressions 2 and 1 on the protective film can be produced.

A preferred according to an exemplary embodiment of the present invention, said orientation is provided which reduces bowing phenomenon scene direction stretch speed about 6m/min to 10 m/min, more preferably a protective film in 8.5m/min to 6.5m/min can be produced. 8 m/min to 6.5m and more precisely relates can be/min. More particularly, said new orientation is provided which reduces bowing phenomenon about speed stretch direction 7.8m/min to about 7m can be/min.

A preferred of the present invention according to an exemplary embodiment, about speed stretch direction in the lateral orientation said 6m/min to 10 m/min, more preferably a protective film in 8.5m/min to 6.5m/min can be produced. 8 m/min to 6.5m and more precisely relates can be/min. More particularly, about speed stretched direction in the lateral orientation said 7m/min to about 7.8m can be/min.

According to the present invention said orientation is provided which reduces bowing phenomenon scene direction and in the lateral orientation direction stretch, molybdenum, and zro2. 6m/min to 10m when/min, polyester film has low the direction of the thickness may have phase difference.

I.e., embodiment of the present invention, stretch direction in the lateral orientation said direction and scene orientation is provided which reduces bowing phenomenon said brush fixing supporter supports the end speed, desired in the present invention which can maintain the orientation, orientation is provided which reduces bowing phenomenon scene direction and in the lateral orientation direction stretch speed and according non-stretched, transparent suitable optical quality may be embodied in.

According to an exemplary embodiment of the present invention a preferred stretch temperature Tg+50 °C to Tg+5 is connected to the range of, or the forth step, 0.02 lower Tg, fracture may occur.. In particular, in order to improve brittleness of the medium varies the degree of stretch Tg+40 °C to Tg+10 preferably.

According to the present invention heat-setting after stretched film, after initiating the scene in the lateral orientation and/or in the direction of the orientation is provided which reduces bowing phenomenon is relaxation direction.

A preferred according to an exemplary embodiment of the present invention, a heat-setting said heat-setting in the 260 °C to 180 °C temperature, more preferably 250 °C to 200 °C, most preferably on the 240 °C to 210 °C can be producing protective films. A heat-setting said heat-setting temperature in the 220 °C e.g. and more precisely relates to 230 °C can be. Heat-setting temperature when outside of the range of the, heat-setting for playester film thickness direction is phase difference, can be is rainbow.

Wherein said heat-setting process of about process time of about seconds to 5 can be ingredient 1. More particularly, said heat-setting process process time of about 10 seconds to about 45 can be ingredient.

According to the present invention, the polarization-adjusted said manufacturing method such as agent for making polyester producing protective films thickness and transmit power to the, plane phase difference film having phase difference and thickness-direction 14.5 weight percent, can be produced.

Furthermore, of the present invention said protective film provides the regular power failure plower line, antistatic agent, blocking agent and other inorganic composes a lubricant various kinds of additive the present embodiment the first deoxygenator within such a range that causes no damage to effect may include.

The present invention according to said protective film provides the to yield enhanced and mechanical properties can take the. Furthermore, on processes such as protective film provides the, which is defined by the portion of the sacrificial layer is patterned with low thermal shrinkage, said covers can be protected efficiently.

While, the present invention refers to polarizing layer; and

The upper and lower faces at least one of said polarizing character layer an evaporation material space into a plurality and one is, said protective film provides the polyester containing the resin and the, in-plane phase difference of 300 nm hereinafter and, polarization plate thickness direction phase difference includes 3000 nm hereinafter.

A preferred according to an exemplary embodiment of the present invention, to protect a polarizing said 30 micro m hereinafter a protective film of dielectric material to make the dielectric material, said expressions for mold press molding which has a 2 and expressions, and 1, scene orientation is provided which reduces bowing phenomenon stretched back 6 100 2.5 direction, in the lateral orientation direction is stretched back 6 100 2.5 produced. may alternatively be a polarizer is described that is used to.

A preferred according to an exemplary embodiment of the present invention,

Display panel; and said display panel receives first light for emitting at least and the lower side plate a polarization which is placed on a face

Includes, the polarizing plate

Polarizing layer; and said polarizing character layer the upper and lower faces applied on at least one polyester adjacent to protective film

Includes, said protective film provides the polyester containing the resin and the, in-plane phase difference of 300 nm hereinafter and, thickness direction phase difference is 3000 nm hereinafter includes including display device.

Hereinafter the present invention for the illustrated super acid catalyst such as hexafluoro described, along with the accompanying drawing.

Figure 1 shows a also shown and a polarization plate according to one embodiment of the present invention whose cross section..

With a 1 also, the present invention according to polarizing plate (11) the polarizing layer (220) and a pair of protective film (310 . 320) to including structure can be produced.

Said polarizing layer (220) performs polarization function. Said polarizing layer (220) the material, such as iodine, dyed to may it will be a vinyl alcohol layer. The, polyvinyl alcohols included in vinyl alcohol layer poly said molecules can be are aligned in one direction and. Said protective film (310, 320) the polyester resin. E.g., said protective film are a polyester resin. I.e., both said protective film may comprise an polyester resin. Which, unlike is, said protective film at, one polyester containing the resin and the, at least one other of which said acrylic resin or diacetyl cellulose resin may comprise an.

As such, the present invention according to said protective film provides the to yield enhanced has and mechanical properties, with low thermal shrinkage having the protective film on application of said covers can be protected efficiently.

Thus the present invention according to polarizing plate improved optical properties, mechanical properties and thermal properties can take the.

Said polarizing plate liquid crystal display device or organic light emitting display device such as display can be applied to the device.

The present invention according to applied polarizing plate protective film liquid crystal display device (liquid crystal display; LCD) can be used for the production of.

The present invention according to Figure 2 shows a liquid crystal display device also outlines one super acid catalyst such as hexafluoro. whose cross section shown.

2 also refers to surface, , according to some exemplary embodiments of the present invention liquid crystal display device LCD and backlight unit (20) includes.

Said backlight unit (20) emits a ray of light the supplies the light to the LCD panel. said liquid crystal panel has said backlight unit (20) by using the light emitted from the, . to display an Image. More particularly, said liquid crystal panel has said backlight unit (20) by using the light emitted from the, intensity of light light to be emitted to the pixel-by-pixel manner a new line value.

Said liquid crystal panel the upper polarizing plate (11), color filter substrate (13), liquid crystal layer (14), TFT substrate (15), and lower polarizing plate (12) includes.

Said TFT substrate (15) and said color filter substrate (13) opposed each other. Said TFT substrate (15) the corresponding to each pixel are plurality of electrodes, said thin film transistors which is connected to pixel electrodes, said thin film transistor, respectively a plurality applies a drive signal to the gate wires and said thin film through the transistors, pixel electrodes applied data signal to said a plurality data may include lines.

Said color filter substrate (13) each corresponding to the pixels plurality of color filter including. The color filters are overlapped with the filters out the light transmitted, red, green and blue can be, each implementing. Furthermore, said color filter substrate (13) against the the pixel electrode may include a common electrode.

Said liquid crystal layer (14) the TFT substrate (15) and said color filter substrate (13) is interposed between the. Said liquid crystal layer (14) the TFT substrate (15) can be driven by. More particularly, said liquid crystal layer (14) the pixel electrodes and said common that is formed between the electrodes. capable of being driven by electric field. Said liquid crystal layer (14) the lower polarizing plate (12) and caused to pass through the light can be information in an orthogonal polarizing direction. I.e., said TFT substrate (15) the pixel-by-pixel manner, said pixel electrodes and said common electrode supplies the. type can be control the potential difference. These, said liquid crystal layer (14) the pixel-by-pixel manner with different optical properties and can be actuated so having..

Said upper polarizing plate (11) and said lower polarizing plate (12) at least one polarization plate manufacturing method described a previous substantially the same construction can take the.

Said lower polarizing plate (12) the TFT substrate (15) is according to driving of the first liquid. Said lower polarizing plate (12) the TFT substrate (15) can be adhesive lower surface of.

Said upper polarizing plate (11) the color filter substrate (13) is placed on top of. Said upper polarizing plate (11) the color filter substrate (13) can be surface of.

Said upper polarizing plate (11) and said lower polarizing plate (12) polarization direction of the same or, may perpendicular each other.

Prior invention as described above wherein, said upper polarizing plate (11) and/or said lower polarizing plate (12) that of a combination of improved includes protection film. These, liquid crystal display device, according to some exemplary embodiments of the present invention an improved luminance, can take the quality and durability.

Furthermore, the present invention according to a super acid catalyst such as hexafluoro using protective film of the present invention to an organic light emitting display device (organic electroluminescence display) can be produced.

Also Figure 3 shows a an organic EL display device, according to some exemplary embodiments of the present invention it is shown a. whose cross section.

Also 3 with a, an organic EL display device, according to some exemplary embodiments of the present invention a front polarizing plate (16) and organic EL panel includes.

Said front polarizing plate (16) is formed on the entire surface of the organic EL panel can be arranged. More particularly, said front polarizing plate (16) the organic EL panel, at which a video is displayed is can be bonded to the surface on which the. Said front polarizing plate (16) provide the described polarization plate manufacturing method substantially the same construction can take the.

Said organic EL panel by a self light-emitting of a pixel-by-pixel basis, . to display an Image. Said organic EL panel organic EL substrate (31) and driving substrate (32) includes.

Said organic EL substrate (31) correspond respectively to pixels the a plurality of organic electroluminescent unit including. Said organic electroluminescent units are each cathode, electron transport layer, light emitting layer, . including anode of and hole transport layer.

Said cathode and said anode is in opposed each other. Said cathode and said anode are spaced from each other. At least one of said cathode and said anode. transparent. More particularly, said cathode and said anode at least one a transparent conductive oxide may include a.

Said light emitting layer, electron transport layer and said said hole transport layer is interposed between said cathode and said. Said cathode adjacent to and said electron transport layer, a hole transport layer adjacent to the anode said said. Said electron transport layer and said said luminescent layer is interposed between the hole transport layer. I.e., said organic electroluminescent units are said cathode, said electron transport layer, said light emitting layer, said hole transport layer and said anode can be arranged in order.

said anode is in can be transparent. The anode said treated with a water-entangling the material used for the as to the aromatic hydrocarbon indium tin oxide (ITO). Furthermore, said cathode a low workfunction metal such as aluminium or the like may include a. Said anode exiting surface light is guided via total internal reflection, can be timing at which a video is displayed.

Said cathode from said electron transport layer the electron transport the light emitting layer. Said an electron transport layer the material used for the treated with a water-entangling tris (8-hydroxy [...]) aluminum) (tris (8-hydroxyquinolinato) aluminium; Alq3) as to the aromatic hydrocarbon.

Said anode from said hole transport layer for transporting the luminescence layer. Said hole transport layer N treated with a water-entangling the material used for the, N '-diphenyl-N, N' -bis (1-naphthyl)-1, 1 '-biphenyl -4, 4' -diamine) ((N, N '-diphenyl-N, N' -bis (1-naphthyl)-1, 1 '-biphenyl-4, 4' -diamine); NPB) as to the aromatic hydrocarbon.

Said luminescent layer said electron transport layer from the electronic and couple in a region which faces said hole transport layer, generate light. Said said host and emitting layer may include [...] be doped host. Treated with a water-entangling the material used for the host said cover polybenzoxazole or anthracene-based organic substance or the like can be mentionned. Furthermore, treated with a water-entangling the material used for the dopant said blue, green or red luminescent materials as to the aromatic hydrocarbon.

Said driving substrate (32) the organic EL substrate (31) is coupled drivingly to. I.e., said transistor said organic EL substrate (31) such as a drive current to the light-can be applies a drive signal to can be joined to. More particularly, said driving substrate (32) the organic electroluminescent units each current is applied, said organic EL substrate (31) for or off.

Said driving substrate (32) of the plurality of gate lines, plurality of data lines and plurality of thin film transistors may include a.

Said front polarizing plate (16) improved optical properties, mechanical properties and thermal properties portion of the sacrificial layer is patterned, the present embodiment: an organic EL display device an improved luminance, can take the quality and durability.

Hereinafter, and/or at least two different embodiment of the present invention a described more specifically. However a a is exemplified embodiment is the present invention relate, aspect of the present invention embodiment a content is not limited.

In the embodiment 1-5

Protection film material polyethylene terephthalate resin (SKC product) been is used, about 285 °C of a temperature of a PET resin extruded through extruder, the cast in casting roll with the about 30 °C, undrawn been sheet is made. The undrawn sheet after preheating, 125 °C in temperature of a stretch ratio such as 1 of tables, via, is sequentially stretch each was stretched to orient at in the lateral orientation direction and scene orientation is provided which reduces bowing phenomenon. After, a sheet stretched said table 1 at a temperature of, about 30 seconds and were produced in a protective film polyester is render the.

Compared example 1-2

Equal to said in the embodiment 1 is producing protective films, the same examples of the embodiment PET resin, undrawn sheet is produced, a stretch ratio such as 1 table a heat-setting the stretched then was producing protective films.

Experiment e.g.

Said in the embodiment 1-5 compared e.g. to 1-2 evaluates the physical properties, the result is a list showed to 2.

Wherein, each for detecting amount was enforcing as follows.

(1) plane phase difference (Ro)

Plane phase column , orthogonal on the film of refractive index from that of the of the axle (Δ Nxy= | Nx-Ny|)and anisotropic product of d (nm) film thickness (Δ Nxy×d) value as defined by an parameter, optically isotropic, exhibiting an isotropy measure.. Anisotropic of refractive index from that of the of the axle the (Δ Nxy), was next method are determined by averaging the. 2 using polarizing plates, and acquires the result as the axial orientation of film, to orthogonally intersecting a groove axial oriented the cut rectangular 4 cm × 2 cm, light with the sample for measuring. For from the sample, is a biaxially orthogonal (Nx, Ny) refractive index of, and thickness-direction (Nz) for Abbe refractive index orgin refractive index of (oh it burns and it buys manufacturing, NAR-4T, a measured wavelength 589 nm) by despreading block and, said refractive index of the axle angle (| Nx-Ny|)over the refractive index is anisotropic (Δ Nxy). D (nm) thickness of a film is-operates with an electric micrometers (calpaines [...] manufacturing, 1245D Digitron millimeter) and measured using, was, in terms of a product having nm units. Anisotropic of refractive index from that of the (Δ Nxy) and a film thickness of from product of d (nm) (Δ Nxy×d), retardation (Re) was is obtained.

(2) phase difference thickness direction (Rth)

Phase difference (retardation) email widow, a web page or thickness direction, as viewed in cross-section film thickness direction of birefringence Δ Nxz 2 (= | Nx-Nz |), Δ Nyz film thickness d (= | Ny-Nz|)respectively multiplies the obtained a retarder is the parameter expressing the average phosphorous acid ester structure in the molecule. Nx in the same and the exhibition of retardation during film forming method, Ny, uses an averaging filter Nz and a film thickness d (nm), (Δ Nxz×d) and a (Δ Nyz×d) of carrier is calculated by calculating an average phase difference thickness direction (Rth) was obtained.

(3) rainbow color unevenness observed

Is compared with the iodine and a PVA one side polarizer method refers to the memory film contacting polarizer polyester film is vertical spindle orientation of ([...]) and sticking to, TAC film to opposite sides thereof (buffed film (main) yarn, thickness 80 micro m) for sticking a heat-was plate, and hence the angle of polarization. And a polarization plate obtained, blue LED, and yttrium, aluminum, garnet-based yellow phosphor for combined signal LED light emitting element to be a white noise signal (chemically [...] , NSPW500CS) of a liquid crystal display device, which becomes the front side to polyester film side travel provided. A liquid crystal display device, liquid crystal cell side incident light 2 of TAC film polarizer has a polarizing plate protective film. Polarization of front face of the liquid crystal display device, and tilt in the direction are observed to float, a magnet, and, respect to accident on of rainbow color unevenness, was determine as follows.

◎ : no generation of negative color unevenness rainbow them out of it from every direction.

○ : when observation under an in oblique direction, is multi-sided part is is observed rainbow color unevenness.

× : when observation under an in oblique direction, is clearly rainbow color unevenness is observed.