TW200902618A - Resin composition for optical film, and optical film comprising the same - Google Patents

Abstract

To provide a resin composition for an optical film having excellent selective transmittance of polarized light, and specifically to provide a resin composition which can be utilized in a polarized light scattering optical member applicable to a device utilizing optical characteristics or a light-utilizing mechanism member which is combined with the optical member. The resin composition for the optical film is characterized by comprising: 1 to 30 wt.% of at least one kind or more fibrous or columnar particles having an average shorter axis diameter of 1 to 70 nm and an average longer axis diameter of 600 nm to 5 [mu]m; and 70 to 99 wt.% of a transparent resin.

Description

200902618 IX. OBJECTS OF THE INVENTION: The present invention relates to an optical film resin composition excellent in selective penetration of polarized light, and more particularly to a polarizing scattering type which can be utilized for a machine utilizing optical characteristics. An optical member, and a resin composition that can be used for a light utilization mechanism component combined with the same member. [Prior Art] In the prior art, a technique for obtaining a specific polarized light is known, and a method of using Bronze as an optical component, by reflection and penetration, using the Brewster law of the polarization of the polarization component of light, using a calcite exhibiting birefringence By means of constant light refraction and abnormal refraction, Glan_F〇ucauit polarizer or Glan-Thomson polarizer which splits the polarization component, or a combination of 稜鏡 and birefringent elements, the two polarized components can be split and exited by Wol laston稜鏡Equal beam splitter. Further, a light absorbing polarizer which uses a dichroic material which absorbs only a polarizing component orthogonal to the specific polarizing component of the light component and is used for the liquid crystal display or the like is used. When the polarizer is used as a display having a large area for the display function, the conventional glass polarizer or the like is difficult to be enlarged and thinned, and cannot be used. For this reason, a polarizing film which disperses and aligns an iodine-based compound or an organic dye in a resin film as a one-color material which exhibits absorption in a specific polarized state in a molecular alignment state is used. However, a polarizer using a dichroic material absorbs a polarized component parallel to the molecular chain direction of the dichroic molecule when light is incident, and only polarizes the polarized component of 7042-9447-PF; Ahddub 5 200902618 . That is, even if the surface inversion and scattering components of the light are ignored, 50% of the polarizing components are absorbed without being used, and energy is wasted. For example, in the use of a liquid crystal display or the like, a polarizer for a dichroic material is used, and about 5% of the light source energy is discarded without using it, in order to ensure a certain brightness and brightness. A light source with excessive brightness is required. Therefore, in the display using such a dichroic polarizer, it is expected that the energy-saving technology capable of reducing the loss of the mussels can be reduced. In order to effectively light the light source, a polarization control with a small absorption loss is required, and a refractive control type or a scattering control type may be used. In the scattering type polarizer, since the polarization component orthogonal to the polarization of the light-transmitting side is internally scattered, the scattered polarization is restored to non-polarized light by the light scatterer or the diffuser inside or behind the polarizer. The light can be reused to improve utilization efficiency. The principle of the polarization control technique using the anisotropic light scattering is very old, and it has been reported to be used for acicular crystal particles (see, for example, Non-Patent Document 1). In addition, there is a plate-like material in which a nanocrystalline single crystal is crystallized on a mica, and the glass plate on the side of the plate-like plate is ground and the polarizer is held in a predetermined space (see, for example, Non-Patent Document 2). . And report-type polarization control method, which uses the polarizer of Non-Patent Document 2 to have optical anisotropy, and the refractive index of the glass plate and the internal "plate rate" of the plate are penetrated, and the glass penetrates. The refractive index of the plate and the abnormal refractive index of the inner plate are not reflected, and the light will be internally reflected and scattered without the light penetrating. 7042-9447-PF; Ahddub 6 200902618 Polarization control technology using light scattering, A report of a method of extending a film member comprising a birefringent rod-like vermiculite-based calcium carbonate and a birefringent resin (see, for example, Patent Document 1). The method of Patent Document 1 is controlled by The direction in which the refractive index of the particle and the refractive index of the resin appear to match the direction of the mismatch, only the polarization component of the matching axis direction is penetrated, and the polarization component of the mismatched axial direction is reflected. The method of scattering back to the source side is reported. However, the shape characteristic of the particles in the specification is not a rod shape, and a specific example of the development performance and a countermeasure for matching the refractive index of the particles with the resin are not described. There is a report on a method of controlling the surface type of the resin-mixed material to control the scattering-type polarizing (see, for example, Non-Patent Documents 3 and 4). Non-patent documents 3 and 4 also report the resin and constituent components of the matrix. The matching and mismatching of the refractive index of the tree is intended to show the function. In addition, there is a method of controlling the matching and mismatching of the refractive index of the resin substrate with the case where the mixed substance is a core-shell type rubber particle. For example, the non-patent: In addition, there is a report of a method of arranging a fibrous substance in a resin substrate to exhibit a refractive index of a ruthenium material [with a mismatch method (see, for example, Patent Gexian 2). A particle having a length of from 1 Gnm to a wavelength of light used as a light-receiving inorganic material having a birefringence of 1 to Μ by weight of a resin substrate (see, for example, J Document 3). In Patent Document 3, the resin composition of the object # 匕 凋 particles is used as a medium for the first hook, so that its birefringence can be regarded as a double fold 7042-9447-PF; Ahddub η 200902618 ( The sum of the birefringence of the particles and the birefringence of the resin 'the size of the birefringent crystal needs to be + than the wavelength of the light, and the particles of the examples use particles of less than 5 GG nm, and are not described. The behavior when the particles are larger than this and the behavior of the resin composition of the tuned particles is a medium that is not uniform for light. Furthermore, it is not described that the optical wavelength of a specific optical element is not described in the examples. In the evaluation of the light wave &, it is impossible to confirm the knowledge of the particles of 500 nm or more. In addition, there is a report of a resin material which exhibits non-birefringence by blending particles of lithium carbonate having a birefringence which is not negative (see For example, in the case of the transparency of the optical resin material, the particles of 卩500 nm or less are preferable, and the method for producing particles of m or less and the optical characteristics of the resin used as the resin are shown. The decoupling effect of the alignment birefringence, but it is not described that the size larger than this is 'having a problem in transparency. Non-patent documents 1 to 5 and Patent Documents 1 to 2 cited here are reports on scattering-type polarization control in which light is transmitted or scattered between a substrate substance and a substance f disposed therein, but a non-patent document In Non-Patent Document 2, at the time, the matching and mismatch of the birefringence of the resin were not controlled by the particle size and the refractive index of the particles, and it has not yet been put into practical use. 1 to 2', although the anisotropy of the penetration and scattering of the refractive index difference of the operative substance is proposed, the non-patent documents 3 to 5 and the patent document are used as the substrate material and the optical anisotropy matching inside. It is obvious that the light penetration according to the polarized component is in the scattering. The control of the sheet a 叩 成为 成为 成为 成为 成为 成为 成为 成为 成为 成为 , , , 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 Patent Document 3 and Patent Document 4 describe a method for maintaining transparency and eliminating birefringence by blending and refracting particles of a characteristic size, and it is necessary to make the particle size 500 nm or less or a light wavelength smaller / Patent Japanese Unexamined Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. 2004-008. Patent Document 1. EH Land, J. Opt. Soc. Am., vol_ 41, No. 21, 957-963 (1951) Non-Patent Document 2: T. Yamaguti, J. Opt. Soc. Am., Vol. 45 , No. l〇, p89 892 (1955) Non-Patent Document 3. H. Jagt, C. Bastiaansen etal, Adv.

Mater., Vol. 10, No. 12, 934-937 (1998)

Non-Patent Document 4: T. Koyano, I. Akiba, SEN, I GAKKAISHI, Vol. 60, No. 6, 179-182 (2004) Non-Patent Document 5: Y. Dirix etal, J. Appl. Phys., Vol. 83, No. 6, 2927-2933 (1998) [Problem to be Solved by the Invention] The object of the present invention has been made in view of the above-described facts, and an object thereof is to provide: specific particles A resin composition for an optical film comprising a fibrous or columnar particle having a size and a resin having transparency, and a film comprising the film of 7042-9447-PF; Ahddub 9 200902618, wherein the optical member light is incident on the film Infiltrating or scattering the polarized component [Means for Solving the Problem] The inventors of the present invention have studied the fiber-like or columnar particles of a specific particle size and have transparency. The sapphire composition composed of a resin can solve the above problems. That is, the constitution of the present invention is as follows. (1) A resin composition for an optical film, which comprises: a weight of /3. The particles are at least one or more kinds of fibrous or columnar particles, and the average size of the short axis diameter of the particles is 4, 7_, and the average size of the major axis diameter is _, 5"; and 7 〇 to 99% by weight is transparent. (2) The resin composition for an optical film according to the above (1), wherein the fibrous or columnar particles 'including an average size of the minor axis diameter is 7_, and the average dimension of the major axis diameter is _nm. The above-mentioned particles (4); and the average size of the short-axis diameter are 7Qnm, and the average size of the major axis diameter is equal to or higher than the particles (b). (3) The optical film according to the above (1) or (2) The resin composition, wherein at least one of the fibrous or columnar particles is selected from the group consisting of titanium oxide, oxidized magnesium oxide, lithium carbonate, calcium carbonate, magnesium carbonate, cobalt carbonate, manganese carbonate, and sulphuric acid. A group of inorganic crystal particles of the optical film according to any one of the above (1) to (3), wherein the resin group of the optical film is: 'The resin with transparency is selected from polymethyl methacrylate polystyrene, styrene acrylonitrile Polymer, polyfumarate diester, 7042-9447-pp; Ahddub 10 200902618 Amine copolyol ester polycarbonate, polyarylate, polyether sulfone, cyclic polyolefin, maleic ruthenium polymer, poly pair The photosynthetic composition of any one of the above items (1) to (4), wherein the film has a haze value of 10, which is a composition of the above-mentioned (1) to (4). More than %. Membrane resin group

(8) The resin for optical film according to any one of the above-mentioned items (1) to (5) wherein the resin having transparency and the fibrous or columnar particles are dispersed at a shear rate of 500 to 50, OOOsec-1. mixing. (A) The optical film according to the above (7), wherein the optical film according to the above (7), wherein the optical film is stretched. (9) The optical film according to (8) above, wherein, when extending, the glass transition temperature (1^) of the resin having transparency is Tg+1 (rc ~ Tg + 4 (rc uniaxially extending and aligning). (10) The optical film according to (8) above, wherein, when extending, the glass transition temperature of the resin having a transparent CJ property is melt-molded at a Tg + 10t: ~Tg + 130 ° C which is an upper limit of 350. (11) An optical film obtained by laminating an optical film according to any one of the above (7) to (1), and a polarizing plate having a polarizing plate or a protective layer. (12) A brightness enhancement The film comprising the optical film according to the above (11). [Effect of the invention] The optical or columnar particle of a specific particle size and the optically transparent tree 7042-9447-PF; Ahddub 200902618臈 树脂 树脂 树脂 树脂 树脂 树脂 树脂 树脂 树脂 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟 纟The refractive index of the fiber in the state of the fiber is inconsistent with the refractive index of the wax having transparency, and the device is required to have a polarizing efficiency such as brightening, such as brightening, and the polarizing efficiency of the film. The invention will be described in detail. The fibrous or columnar particles used in the present invention have an average size of the short axis diameter of the Bu 70 dragon '40 to 6 〇ηπι, and the average length of the major axis is 600.5 # m. It is particularly preferable that 600nni to bm is preferable. When the average size of the short axis diameter of the particles is less than km, it is difficult to synthesize substantially particles, and the resin composition for optical film is made into an optical material beyond 7 〇 nm, and the polarizing is parallel to the short axis direction. The component is scattered. Further, the average size of the major axis diameter which is sufficient to scatter the polarizing component parallel to the major axis direction of the particle is 60 〇 nm or more. However, the average size of the major axis is less than 6 〇〇 nm. When the resin composition for an optical film is used as an optical film, it is difficult to have a light-transmitting selectivity, and the polarizing component cannot be sufficiently scattered. When the thickness exceeds 5/m, the film is easily broken by shearing or the like. Material formation It is possible to use one or more kinds of these fibrous or columnar particles. In particular, since the effect of selectively penetrating or scattering a polarizing component can be exhibited in a wider wavelength range, the polarization control of a liquid crystal display or the like needs to be spared. A device for lifting film and high polarizing efficiency, etc., can be used for performance 7042-9447-PF; Ahddub 12 200902618 ' Lifting, so fibrous or columnar particles, for people: one for 1~70mn, county for 3 from And the average size of the wheel diameter ^ The average size of the long axis diameter is · The particle size less than 8 ♦ ♦ A, for the 7Gnm 'average diameter of the long axis ^ (10) or more 5 " below the ffi particle ( : with particles (7) The blending ratio (weight ratio) 'to】 The wealth particle (4) is particularly good at 30: 70~70: 3〇. 5 is preferably a fibrous or columnar granule of the present invention. The mouth is to be ignorant for the purpose of the present invention, and the shape disk specified in the present invention, in the range of + sub-size, may be any, for example, titanium oxide, oxygen oxime, m, emulsified zinc, emulsified town, carbonated record , strontium carbonate *5 rabbit acid town, carbonated, #秘 & calcium citrate, alkaline calcium sulfate, hydrogen ^ oxygen ^ silk (four) stone, carbon cut and other inorganic crystalline particles, especially emulsified chin, emulsified zinc It is better to sell carbonic acid and obstruct the hair. However, it is not possible to use particles which are colored to absorb light absorption or the like in the region of interest of the present invention: ... outer region to visible light " Fibrous or columnar particles, regardless of whether or not the photoinduced anisotropy (birefringence) is caused by the crystallization state, as long as the effect of the object of the present invention is apparent, the particles of the (4) type are transferred to the transparent of the present invention. The resin may be any one as long as it does not impair the effect of the present invention, for example, polymethyl methacrylate, polystyrene, t-ethylene propylene glycol, polyfumaric acid diacetate, polycarbonate, Polyarylene, polyether hard, ring-shaped polystyrene, a maleic amine-based copolymer, poly-p-benzoic acid ethyl alcohol S曰, polyethylene naphthalate, etc. In particular, it is preferably polystyrene, polycarbonate, or aroma. Further, as the resin having transparency of the present invention, it can be used regardless of the presence or absence of birefringence, the positive and negative of birefringence, and its 7〇42-9447-PF; Ahddub 200902618: size. Further, the group of the fibrous or columnar particles and the resin having transparency may have birefringence, and may be used in combination without considering the combination of the respective combinations: birefringence, etc., for example, combinable. The birefringent oxidation is made with a polycarbonate exhibiting positive birefringence. Similarly, carbon having a negative birefringence and polystyrene or polymethacrylate exhibiting a negative diffractive property may be combined. In the resin composition for an optical film of the present invention, the blend ratio of at least one of fibrous or columnar particles and a resin having transparency is at least one type of fibrous or columnar particles (3 wt%) , = 7G ~ 99% by weight of resin, 5 Γ 30% by weight of fibrous or columnar particles 'The resin with transparency 72 〇 ~ 95 Cao Jin G / Helmet-like particles (four) 〇 heavy, and ancient is better, Fiber or column is good. When the optical resin 70 having a transparency is less than i% by weight of the particles of the specific fibrous or columnar shape, when the optical composition is used as an optical film, it is not sufficient for the optical film to be used for scattering and scattering. The molding processability of the eucalyptus eucalyptus composition is inferior to the composition of the optical film of the present invention. The restriction may be, for example, dispersion mixing using a plucking mixing device. The second mixing device may be, for example, a dish type stirring mixing device, a round (four) turbulent mixing device, a homogenizer, or the like. When using the mixing device, the fibrous or columnar particles are isolated from each of the isolated f' fats. The trees that are scattered/transparent are especially suitable for this purpose. The cutting speed is preferably 500~讥(4)咐-丨, step is 14 7042-9447-PF; Ahddub 200902618 1,000~25, OOOsec-1 is better. In the case of Knife/3⁄4 ,, since the surface of the fibrous or columnar particles is treated with a surface treatment agent or the like in advance, the surface-treated fibrous or columnar particles and the resin having transparency are used. It is preferred to show a mixture of affinity and mixing. The above solvent may be blended with the fibrous viscosity or the volatilization rate for the purpose of blending with the fibrous or columnar particles and the resin having a transparent 'I. Solvent 0 A surface treatment agent for fibrous or columnar particles, as long as it does not detract from the effects of the present month, any of them can be used, for example, a coupling agent, an acid coupling agent, an acidic surfactant, or a base. a surfactant, a salt-type surfactant, etc., a "sub-type surfactant" such as the molecular weight of the above-mentioned molecular weight. The acidic surfactant may, for example, be vinegar, fatty acid vinegar, vinegar, And the above-mentioned derivatives, etc., and the basic surfactant may, for example, be a mercaptoamine type derivative, etc. The salt type surfactant may, for example, be a salt type in which both the type and the test type are mixed. It is suitable for the neutralization of acid and the like. It is suitable according to the interface energy of the particles, the functional group and the specific surface area, etc., so that the surface treatment can be applied to the surface of the fiber without any effect of the object of the present invention. Shaped or columnar particles and The transparency tree is a solvent which exhibits affinity, and is not particularly limited, and may be exemplified by (4), chloroform, pyrene, tetrahydrofuran, acetone, N-decylpyrrolidone, ethyl acetate, f ethyl ketone, methyl Butanone, acrylonitrile, etc. θ From the above-mentioned fibrous or columnar particles and transparent 7042-9447-pp; Ahddub 15 200902618, the sentence is scattered in the solution to remove the solvent, so that it can be cured. A resin composition for an optical film in a state in which fibers or columnar particles are uniformly dispersed in a resin having a steepness in the moon. Further, by dispersing and mixing the fibers or columns in advance by the above method; The transparent resin is melt-mixed and further dispersed and mixed, and may be used for mold extrusion molding or the like. In this case, the melt-kneading device can be widely used, and examples thereof include a roller mixer, a uniaxial extruder, and a double. The resin composition for the optical film of the present month has a film haze value of 10% or more to effectively control the penetration and scattering of light. The resin composition for the photonic film of the moon is a polarized light. Choose the best In the case of making a fibrous or columnar particle alignment, the direction of the long axis of the fiber-like or columnar particle is based on the parallel and the yttrium λ U u , the incident polarization component. The intensity of the polarized light (Τ//) ^ is the relationship between the intensity of the polarized light when the polarized light is perpendicular to the long axis of the fibrous or columnar particles and the polarized light in the vertical direction is incident on the blade. (Τ丄)/(Τ")> ι.〇. The optical ray wax composition of the present invention is also used for improving the thermal stability of the oxidizing agent, etc. The oxidation preventing agent can be used by a conventional one. For example, it may be blocked (four) oxidation inhibitor, phosphorus-based oxidation inhibitor, and other oxidation inhibitors. These oxidation inhibitors may be used alone or in combination, and the oxidation prevention effect may be multiplied and used as a positive effect. It is preferable to use a phenolic oxidation inhibitor and a phosphorus oxidation inhibitor together. The resin composition for optical film of the present invention is for suppressing thermal coloration of the film and 7042-9447-PF; Ahddub 16 200902618 = can also be blended with light (4). The light stabilizer can be used to obtain a known amount of U00 or higher. In addition, the resin color of the optical film of the present invention may be adjusted to suppress the deterioration of the external line, and may be adjusted to ultraviolet rays, such as benzotrizole. UV stabilizer. A resin composition for an optical film such as S纟 formic acid, such as an optical film, is an optical 趟 傲 傲 - - 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 特别 纤维 纤维 纤维 纤维 纤维 纤维 纤维 纤维 纤维 纤维 纤维 纤维 纤维 纤维 纤维The formed solutions are all classified: , also;:: film-forming to remove the solvent to form an optical film. The sheet skin #4 #, the tree-known composition is pulverized, and the sheet is formed into a film using a heated smelting and extruding device. When the ruthenium is formed by the method of casting by the solution of the liquid, the transparent resin exhibits a resin which is soluble in the fibrous or columnar shape and which is high-speed sheared and transparent, and a tree (four). The solution (the following == obtained on the optical film by desolvation by heating or the like to obtain a film: a compound) is cast on a support substrate as long as the method of the waist. The method of casting the rubber, the method of filming can be a method of tempering, a knife-to-knife method, a bar coating method, a light coating method, for example, a die plate. Coating method, etc. The support base to be used, or the film surface to be smoothed, may be used for any film, for example, glass can be used, for example, "1" can be a plastic film such as ethylene glycol, etc. Polyphthalic acid 7〇42-9447-pp; Ahddub 200902618 An optical film composed of a resin composition for an optical film which can be formed into a columnar shape due to an optical film which is more excellent in penetrability of the first light. It is preferable that the particles are aligned toward the specific side TM π π, and the alignment method is not particularly limited, and examples thereof include an injection method, an anaerobic 〇, a / a squeezing method, a blow molding method, and a mechanics. Sexual extension processing> n. t, 呷 processing special shear stress field to make the alignment method, the application of electric field or magnetic field before the application of the Μ Μ 史 史 史 史 史 史 史 ' ' ' ' ' ' ' 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 Generally, it is better to use mechanical extension processing method and extrusion molding method. Mechanical extension processing method, 卯1 illusion such as early axis extension, biaxial extension, etc., 疋/, with τ mold extrusion forming The forming method is processed into a film while imparting alignment, Jd ππ The method of pre-forming the film to extend the uniaxially extending machine is preferred. The following describes an example of the extended processing method. The uniaxial stretching method of the film, for example, extending by a cloth machine, method, and wheel pressing The method of machine rolling extension, the method of extending between rollers, etc. - It is also possible to use a small extension device for uniaxial extension. The fiber is uniaxially stretched to make a fiber or column. The processing conditions of the particles when they are aligned in a specific direction, and the glass transition temperature of the resin having transparency (TgHliTC~Tg+4 (Tr κ he g 40c extended alignment is better) especially

Tg+3 (rc alignment is preferred. The extension ratio can be more than h1 times as long as it is larger than the original size. It can also be extended by 0. The extrusion molding method is not limited to 1 γ _ 々彳 , , , , , Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ Τ 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 704 The film is extruded in a film form such as a resin composition or a τ mold, and then cooled by a cooling roll or air. When the (4) τ mold is extruded, the method is as long as it has a moon. The temperature region above Tg can be melt-molded at a temperature of 40 °c (rc~Tg side).

It is better to be tempted. The molded article extruded from the T-grid & mountain L i mold can also be used to directly fix the orientation of the fibrous or columnar particles by using a cooling roller or the like, and further can be further processed by the above-mentioned extension processing. The alignment treatment of the fibrous or columnar particles is performed. The resin composition for an optical film of the present invention and the optical film thus constituted can be obtained by the method as described above, and the function can be evaluated by optical characteristics. A polarizer of the previous dichroic material is used to cause one of the polarized light to pass through the other side of the polarized light. However, according to the present invention, the fibrous or columnar particle alignment in the optical film composed of the resin composition for an optical film is based on the direction of the long axis corresponding to the fibrous or columnar particles. The intensity of the polarized light (T//) when the polarizing component is incident in the parallel and perpendicular directions and the polarized light intensity (τχ) when the polarizing component perpendicular to the long axis of the fibrous or columnar particle is incident. The relationship of the transmitted light intensity ratio is (Τ±)/(Τ//)>1. That is, by exhibiting the selective penetration characteristic of the polarized light, the non-penetrating polarized component is returned to the light source side by scattering, and can be recycled without being lost. This principle is illustrated in Figure 2. a) The optical film composed of the resin composition for an optical film is incident from the light of the light source. 7042-9447-PF; Ahddub 19 200902618 'b) An optical film composed of the optical resin composition, polarized light when the long axis of the fiber-like or columnar particles is orthogonal to the light transmission axis of the polarizing plate More ingredients are passed. C) An optical film comprising the resin composition for an optical film, wherein a polarizing component of a polarized component that is passed through when a long axis of the fibrous or columnar particle is orthogonal to a light transmission axis of the polarizing plate is scattered by the particle The amount of penetration is reduced, and the components returning to the light source side are more. d) The light on the light source side is returned to the optical film composed of the resin composition for an optical film. The optical film comprising the resin composition for an optical film of the present invention can be used by laminating a polarizing plate having a polarizing plate or a protective layer. Further, a member which is laminated with the light guide plate and the polarizing plate can be used. Further, an optical film in which a polarizing plate having a polarizing plate or a protective layer is laminated on the optical film of the present invention can be used as a brightness increasing film. In particular, since the brightness enhancement film is disposed between the polarizing plate and the light source, the brightness enhancement film converts the light of the light source into the polarized light and the scattered light, and the light penetrates directly through the polarizing plate. Therefore, the light absorption loss of the polarizing plate is reduced, and the light utilization efficiency of the light source can be improved by reflecting the scattered light returning to the light source side and reflecting it again as a system for emitting light. EXAMPLES Hereinafter, the invention will be described in more detail by way of examples, but the invention is not limited by the examples. Hereinafter, a method for evaluation and measurement of the examples will be described. - Measurement of glass transition temperature of resin with transparency ~ 7042-9447-PF; Ahddub 20 200902618 Differential scanning calorimeter (Seiko Electronics Industry Co., Ltd., product name: DSC200) 'At the heating rate i〇°c /inin measurement. - Haze measurement method - Haze meter (Sakamoto Electric Industrial Co., Ltd., according to JIS K71 36 (2000), using the company's product name NDH5000). - The method of measuring the total light transmittance is measured by using a haze meter (product name: NDH5000, manufactured by Nippon Denshoku Industries Co., Ltd.) in accordance with JIS K7361-1 (1999). Measured by the measurement of the light intensity ratio of the Τι, T" and the direction in which the long axis of the fibrous or columnar particles in the optical film composed of the resin composition for the optical film is aligned. The layers are arranged in an orthogonal manner so that light is incident from the side of the polarizing plate toward the optical film, and the intensity of the light emitted from the optical film is measured by a polarizing microscope. On the other hand, the absorption axis of the polarizing plate is placed in parallel with the direction in which the major axes of the fibrous or columnar particles in the optical crucible formed of the resin composition for the optical film are aligned, and the light is laterally directed by the polarizing plate. The optical film is incident, and the intensity of the light emitted from the optical film is measured by a polarizing microscope to obtain τ". From the obtained Τ, / and Τι, the light transmission intensity ratio (Τ丄) / (Τ / /) was calculated. At this time, the wavelength of light used for measurement was 400 70 Onm. Here, for the convenience of calculation, a value representative of the light wavelength of 55 Onm is used as a representative value at the time of measurement at one point. 3 When estimating the wavelength dependence of the transmitted light intensity ratio, the values of the transmitted light intensity ratios of 450 nm and 650 nm, respectively, which are wavelengths of 55 〇 nm, are used. However, the characteristic is that the range of 38〇~78〇ηη in the visible light region is 21 7042-9447-PF; Ahddub 200902618 is not different. Example 1 A zinc oxide particle containing particles as a fibrous or columnar material (manipulated with 10% by weight of methacrylic acid ethylene glycol phosphate having a particle weight of 1 and having a minor axis diameter of 50 nm and a long axis diameter) Average size 3/zm, refractive index) 〇 1 / one chloroformic polycondensate solution, using a 050 mm experimental cylinder rotor type sniffer mixing device at a shear rate of 10, 00 (Γ1 dispersion. After mixing for 5 minutes, as having Transparent resin blended polycarbonate (manufactured by Teijin Chemical Co., Ltd., trade name PANLITE 'glass transition temperature 14rc, average refractive index 155), the combination ratio of zinc oxide to polycarbonate in the mission liquid is 3〇% by weight: 7〇 %, and the non-volatile forming in the solution is very good. ^ Use the small size meter of 03G „m to dissolve 3 _ min per minute, and dissolve the solution for 6 〇 min. The polyethylene terephthalate resin film of the substrate is allowed to stand for one night and night, ~ set by the instrument to 1 60 (: dry to obtain a film-like 3

A resin composition for film formation. The obtained film T corpse / ί paid waist rg was 165C. Also, the film haze is 34%. Secondly, in order to evaluate the penetration light intensity ratio, the obtained stretching device (manufactured by Jingyuan Manufacturing Co., Ltd., type 16 Anw έ i biaxial ^ table jade type I6A1) is extended in a free width and uniaxial direction; i: two is extended to 2 times 'to obtain an optical film . The appearance of the obtained optical film / optical film was good. f The penetration strength ratio is -=, because the optical light transmission intensity ratio of the obtained optical film baba composition is (Td/dh·! n , excellent penetration). Selection of polarized light 7042-9447-PF; Ahddub 22 200902618 Example 2 The optical film was obtained by changing the stretching conditions of the film of Example 1 to 18 (r3 〇 times the same operation as in Example 1) The total light transmittance is 87%. The 'transmission light intensity ratio (τ〇/(τ") is U. The appearance of the optical film is good. Therefore, the optical film composed of the resin composition for the optical film is required.

The penetration light intensity ratio is (L)/(T//)>1. Therefore, it is excellent in the selection of polarized light. Example 3 卞, 矸, 祖, 上玉... AU 篁% of methacrylate ethylene glycol ester treated, ^ short axis 仨 thousand-average size 60nm, the average diameter of the shaft diameter 70〇nm), # And the ratio of the rolled zinc to the polycarbonate in the ridge solution is 1% by weight from the sheet η: 99% by weight, the external sound is 4D ^ M, and the external application is the same as in the first embodiment. A resin composition for a film-filled optical film and an optical film. The obtained film g was 157C. Further, the haze of the film was 22%. The total light penetration of the optical film. VrT, lc drought is 91%, and the penetration light intensity ratio is 〇/(T") is 1.15. The appearance of the optical film is good. Therefore, 'the light transmittance ratio of the obtained optical film is (7)) / (the optical transmittance of the τ plate and the five objects is excellent. Μ > 1.0, so the selection of the polarized light is selected. In the solution of Example 1, ίο ί · 90 Φ - 0 , the combination of gasification and polycarbonate is more than 90% by weight, the same operation as in Example | | Phosphate-based resin for optical film Combination and optical film. The Tg of the obtained film was i 6 7042-9447-PF; Ahddub 200902618 ° C. Further, the haze of the film was 24%. The total light transmittance of the optical film, the transmitted light intensity ratio (τ丄) / (Τ ") is a good appearance of the 2.0 〇 optical film. Therefore, the optical light transmittance ratio of the optical film composed of the obtained resin composition for an optical film is (Τ±)/Γτ) VU") > 1.0, so it is excellent in the penetration of polarized light. Example 5 Substituting the zinc oxide of Example 1, using an oxidized sharp particle (for the treatment of propylene glycol acetoacetate, which is 1% by weight based on the weight of the particles, the average size I of the short axis diameter, the long axis diameter Average size 2 core average refractive index 2 6, refractive index in the long axis direction 2.7) 'The ratio of the combination of titanium oxide and polycarbonate in the solution is 5% by weight: 95% by weight, this 煸Zhe and ^ l Bu Only the same procedure as in Example 1 was carried out to obtain a film-like resin for a film for optical film. Income

The Tg is 165C. Further, the haze of the film was 39%. w The full light of the optical film is woven, and the penetration (four) degree ratio (τ 丄) / (Τ ") is 2.2 〇 optical film has a good appearance. Therefore, the light-intensity ratio of the obtained resin composition for an optical film is ^)/(τ > "Improve the penetration of the sputum. The selection method of the first embodiment is the film obtained in Example 1抑本 and _ _ 彳 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜 膜Machine (Dongshi fine machine product name should be mST〇MILL), extruding machine material ^ version, two two 猓 'from raw material 7042-9447-PF; Ahddub 24 200902618 supply mouth to mold and eve, 田 sore eight 0,, - The spent/dish knife was extruded at 180 〇 c, 2 〇〇〇 c, 24 〇〇 c, and 26 〇〇 c, and cooled by a water-cooled roller to obtain 臈. The obtained film was extended and aligned under the same conditions as in Example 1. The optical film has a total light transmittance of 88% and a transmitted light intensity ratio (τ丄)/(τ") of 2.7. The appearance of the optical film is good. The optical film composed of the composition, Selection of polarized light Therefore, the transmittance of the obtained optical film resin is excellent in (Τ〇/(Τ//)>1〇 penetration. Example 7 Substituting Example 1 is an ancient, non-nt, polycarbonate that is transparent to the resin of the horse. It is made of poly-aluminum IKIKA, trade name is let, glass turns = degree me) 'Zinc oxide and polyfang in solution In the same manner as in Example 1, except that the weight ratio was 90% by weight, a film-like resin composition for an optical film was obtained in the same manner as in Example 1. The Tg of the film transported by the γ-amine product was 177. Further, the haze of the film was 35%. The optical film was obtained in the same manner as in Example 1 except that the obtained film was stretched at 1951 to capture the film. The total light of the optical film was allowed to pass through rT vrT 9 0 to drought. 〇%, the transmittance light intensity ratio (Τι)/(Τ//) is 2·8. The appearance of the optical film is good. Therefore, the optical light transmittance ratio of the optical film composed of the obtained resin composition for an optical film is (Ti ) / (7,,)) 1 η ^ , .〇, so it is excellent in the selective penetration of polarized light. Example 8 Substituting the zinc oxide of Example 1 to make the anti-11 particles Treated with 10% by weight of phosphatidyl methacrylate, the short axis diameter of 7042-9447-PF/Ahddub 25 200902618 1R7 inch 6〇nm, the average size of the long axis diameter _ With the average refractive index right, the refractive index in the direction of the long axis is substituted for the polycarbonate used as the resin of the formula. Polystyrene (t〇s〇, rod quasi-polystyrene' glass transition temperature 1G (rc) A resin composition for an optical film obtained by the operation of Example 1 was carried out in the same manner as in Example 1 except that the solution ratio of the solution (iv) of the carbonic acid pin and the polyphenylene group was 20% by weight: 8% by weight. The Tg of the obtained film was 118 °C. Further, the haze of the film was 32%. An optical film was obtained in the same manner as in Example i except that the obtained film was stretched for 14 generations. The optical film has a full first-line transmittance of 90% and a transmitted light intensity ratio of C丄)/(T") of 2. 0 〇 optical film. Therefore, the optical film composed of the obtained optical resin composition has a light-transmitting light intensity ratio (T〇/(T teaching, so it is excellent in the selective penetration of polarized light). Example 9 is substituted. For example, zinc oxide is used as a zinc oxide granule (the average size of a short diameter of 5 〇 nm 'the average length of the major axis diameter' is treated with 10% by weight of methacrylic acid methacrylate. The resin composition of the film-formed film was obtained in the same manner as in the above, except that the ratio of the carbonized stone in the solution to the polycarbonate was 9% by weight: 90% by weight. Optical film. The Tg of the obtained film was (10) c. Further, the haze of the film was 40%. The total light transmittance of the optical film was

The distal end of the tooth is 88%, and the penetration light intensity ratio (T χ) / (Τ / /) is 2.3 «The appearance of the optical film is good. Therefore, the optical film 7042-9447-PF composed of the obtained resin composition for an optical film; Ahddub 26 200902618 has a light transmission intensity ratio which is excellent in p penetration.丄)(T//)>1.〇, therefore, the choice of polarized light Example 1 重量 Weight: two-shaped: sub-use, respectively, using a weight of 1 for the particle weight. (4) (% of the short axis diameter is equal to the acid oxide galvanic acid treated zinc oxide particles 5 〇 nm, the average diameter of the long axis diameter is 600 ηπι, fly '5) and the Wei zinc particles (8) (the average size of the short axis diameter is 50 nm, „ ^ inch l#m, refractive index 1.95) of two types of zinc oxide particles, 1 = zinc oxide particles (a), oxidized particles (five) and polycarbonate y% by weight: 5% by weight: 9% by weight, The same procedure as in Example 1 was carried out to obtain a film-like resin composition for an optical film and an optical film. The Tg of the film was 16 (rc. Further, the haze of the film was 鸠. " Full light penetration of the optical film The rate is 90%, the penetration at a wavelength of 55 〇, the intensity ratio (T丄)/(T") is 20, and the ratio of the transmitted light intensity at a wavelength of 45 为 is 2. 2' at a wavelength of 650 nm. The penetration light intensity ratio (Ί\ )/(Τ") is 2.0. The optical 臈 has a good appearance. Therefore, the optical light transmittance ratio of the optical film composed of the obtained resin composition for an optical film is (1))/ _·〇' In addition, according to the wavelength first penetration intensity ratio of 450 to 650 is 2.2 to 2.0 and stable, the selective penetration of polarized light is excellent in a wide wavelength range of light. For the fibrous or columnar particles, the zinc oxide particles are treated with 10% by weight of methacrylic acid ethylene glycol vinegar. The average diameter of the minor axis is 50 nm, and the average diameter of the major axis is 6 μμ. Refractive index 7042-9447-PF; Ahddub 27 200902618 U5) and oxidized granules (b) (for the weight of the particles in iq% by weight of methacrylic acid urethane), the short average size, long axis control 2 kinds of zinc oxide particles and titanium oxide particles having an average size of 2 (four) and an average refractive index of 2. 7), and the combination ratio of zinc oxide particles (4), titanium oxide particles (8) and polycarbonate in the solution was adjusted to 3 wt%: 7 In the same manner as in Example 1, a film-like resin composition for an optical film and an optical film were obtained in the same manner as in Example 1. The obtained film was 16 (TC. Further, the haze of the film was 30%. The total light transmittance of the film is 90%, and the penetration at a wavelength of 550 nra//the light intensity ratio (Tx)/(T//) is 2.3. The penetration light intensity ratio at a wavelength of 45 Gmn (T丄)/(T&quot ;) is 2.4, the light intensity ratio (τ丄) / (τ is 2.3 at a wavelength of 65 Gmn. The appearance of the optical film is good. Therefore, The optical film composed of the resin composition for an optical film obtained has a light transmission intensity ratio of η π π π, iv»/CT//)>i·ο, and a light transmission intensity ratio according to the wavelength is 450. ~650πιτι 9 a 〇〇nm is 2. 4~2. 3, and the selective penetration of polarized light is excellent in a wide wavelength range of light. Example 12 Whole light transmittance as a polarizer monomer The optical film obtained in Example 1 and 37% of the polarizer were laminated in the direction in which the optical film was extended as the direction in which the long axis of the particle was aligned, in accordance with the absorption axis of the polarizer. On the back side of the film laminate, a light guide plate for a light source and a light reflection plate were disposed on the back surface thereof, and the light transmittance was measured by the light source passing through the film laminate to be 49%. Further, the penetration light intensity ratio at this time is (T_l) / (T / /) is 990. 7042-9447-PF; Ahddub 28 200902618 & The optical film formed by the object & is a selective film for polarized light, and the transmitted light intensity ratio is favorably used for brightness enhancement, therefore, the resulting optical resin group is worn. The light transmission intensity ratio is excellent in penetration. Further, the layer of the obtained optical film and the polarizer was large ((Ί\)/(Τ//) was 990), so that the laminated film could be lifted. Comparative Example 1 A film-like resin composition was obtained in the same manner as in Example i except that the zinc oxide was used in Example 1 except that the elongation temperature was changed. The Tg of the obtained film was employed. Also, the haze of the film is 〇. The total light transmittance of the obtained film to the film of Example 1 was 90%. The light intensity ratio (1^)/(丄丄) is 丨.0. The same conditions extend the alignment to obtain a film. The appearance of the optical film is good. However, the penetration does not use fibrous or columnar particles, and the transmitted light intensity ratio is '·, ' ( / ) / (Τι) 1· 0, so the selective penetration of polarized light is poor. In Comparative Example 2, in Example 1, the zinc oxide particles containing the fibrous or columnar particles, and the average of the axis t of the methacrylic acid glycolate treated with 1% by weight of hydrazine were added. Dimensions 3〇nm, average diameter of long axis diameter (3)(10), rate of 1.95) 10% by weight of methylene chloride slurry solution, so that Xiao (four) is 7 experimental cylinder rotor type (four) mixed with h shear speed class _1 The resin composition was applied to the film in the same manner as in the Example except that the stretching degree was 135. The resulting film was 149. . . Due to the large particle mass of the film Circumference knife &, the surface I was concave & and the appearance was not 7042-9447-PF; Ahddub 29 200902618 \ 良 0 The obtained film was stretched to obtain a film under the same conditions as in Example 1. . The total light transmittance of the film was 86%. The transmitted light intensity ratio (T//)/(Tl)g10. Therefore, the average size of the long axis diameter of the particles used is small by 1 2 ,, so the surface appearance is poor, and the transmitted light intensity ratio is (TV,) / (Ti ) = 1. 〇, so for the polarized light Poor penetration. Comparative Example 3 In the same manner as in Example J, except that the combination ratio of zinc oxide to polycarbonate in the solution was changed to 4% by weight: 60% by weight, a film-like resin composition was produced, but Since the amount of oxidation (particles) is much more important, it is very brittle, and it causes cracks, wrinkles, and cracks which are noticeable on the film during the film stretching. Therefore, the amount of the particles in the form of fibers or columns is large, and the formability is poor. Comparative Example 4 In the first embodiment, the zinc oxide particles (the average particle size of the short axis diameter of 200 nm, the average diameter of the long axis diameter of the zinc oxide methacrylate treated with 1% by weight of the weight of the particles) were carried out and implemented. Example: A film-like resin composition was obtained in the same manner, and the film was 16 Å. The film haze value was 40%. The obtained film was stretched to obtain a film under the same conditions as in Example 1. The film had a good appearance. The total light transmittance is 81%. However, the penetration strength ratio (Τχ)/(T") is 1. 〇. Therefore, the average size of the short axis diameter of the particles used is (10) (10) and 7042-9447-PF; Ahddub 30 200902618 and the selection of polarized light is large, so the transmitted light intensity ratio is (Τ々) / (Τλ) = 1. The permeability is poor. Comparative Example 5 In place of zinc oxide in Example 1, cesium carbonate is used. The weight of the particles is treated by weight percent of ethylene glycol methacrylate. The average diameter of the minor axis is 5 〇 nm, the average diameter of the major axis is 25 〇//m, the average refractive index is 16, and the refractive index in the long axis direction. The same operation as in Example 丨 was carried out except for 1.52) to obtain a film-like resin combination. The film had a Tg of i 65 〇c, and the film haze value was 14%. Further, the obtained film was stretched to obtain a film under the same conditions as in Example i. The film had a good appearance. The penetration rate is 9〇%. However, the penetration light intensity ratio (Ί\ )/(T") is 1. 〇. Therefore, the average length of the long axis diameter of the particles used is 25 〇 nm and small. The light transmission intensity ratio was (τ ") / (τ 丄) = 1 〇, and the selective penetration of the polarized light was poor. 'Comparative Example 6, spheroidal colloidal cerium oxide was replaced with zinc oxide in Example 1. The resin composition was treated in the same manner as in Example i except that the weight of the particles was 1% by weight of methacrylic acid methacrylate treated with an average particle diameter of 8 〇 nm and an average refractive index of 1.46. The film had a Tg of 1 Ml and a film haze value of 8%. The film was stretched to obtain a film under the same conditions as in Example 1. The film had a good appearance. The film had a total light transmittance of 9 %. However, the transmitted light intensity ratio (T丄)/(1/) is 1〇. 31 7042-9447-PF; Ahddub 200902618 Therefore, as the particles used, it is not fibrous Or spherical particles are used in the columnar shape, so the transmitted light intensity ratio is (T//)/(Ti)=l 〇, and the selective transmittance for polarized light is poor. Comparative Example 7 Substituting the zinc oxide in Example 1 Barium carbonate (methicillin weight of methacrylic acid M _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ A film-like resin composition was obtained in the same manner as in Example except that the refractive index in the long axis direction was obtained. Further, the film haze value was 0.6%. The obtained film was stretched and aligned to obtain a film under the same conditions as in Example 1. The appearance of the film is good. The total light transmittance of the film is 9 intensity ratio 〇Γ〇 / (Τ ") is ... Therefore, the average length of the long axis diameter of the particles used is ^ and small, so the transmitted light intensity ratio is (T / /)/(h) = 1 Poor permeability. The choice of the first light is compared with the case of Example 8. The substitution of zinc oxide in the application of Example 1 is carried out using carbonic acid (particles by weight of methacrylic acid ethylene glycol _, - where the average diameter of the minor axis is A J-film-like resin composition was obtained in the same manner as in Example i except that the average size of the ruler axis diameter was 10 (10), and the average refractive index was 丨6, #=, and the rate W). τ, 45% of the film. § is 16〇C. Further, the film haze value was obtained by aligning the film. The obtained film was extended under the same conditions as in Example 1 7 042 - 944 7-PF; Ahddub 200902618 The film had a good appearance. The film has a full hollow light transmission rate of 90%. However, the penetration intensity ratio (T 丄) / (T ") 4 1 (). Therefore, the average size of the short axis hollow is large and the average dimension i of the long axis is 500 nm, so the transmitted light intensity ratio is (Τ")/(Τλ ) 1, ( ) 'The choice of polarized light is poorly penetrating. The invention will be described in detail with reference to the specific embodiments, but the arsenic and the range of the last month may not be changed or modified in various ways without departing from the invention, as long as the employer should be able to Clear. The present invention is the main #丨, j α 士 by Zhang Japanese Patent Application No. (Special Wish 2〇07 G45281), wherein the date is February 2, GG7 February 26, and the Japanese special shot number (Special Wish 2__G_98), The filing date is π η in January 2008, and * p is the priority and the entire contents are hereby incorporated by reference. [Industrial Applicability] According to the present invention, an optical film resin comprising a fibrous or columnar particle having a specific particle size and a resin having transparency is provided. An optical member in which a film composed of a composition selectively penetrates or scatters a polarizing component when light is incident on the film. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the light penetration behavior of a dichroic polarizer. It is a graph showing the light penetration and reflection, scattering and light recycling behavior of the optical film of the present invention. 7042-9447-PF; Ahddub 33 200902618 [Description of main component symbols] A ~ polarizer using a dichroic material, B ~ an optical film composed of the resin composition for an optical film of the present invention; 8~ incident light; b~ Penetrating light; c ~ reflection · scattered light; d ~ recycling light. 7 042-94 4 7-PF; Ahddub 34

Claims (1)

200902618 ' X. Patent application: 重 重 至 至 至 至 至 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 重 至 至 至 至 至 至 至 至 至 至 至 至% by weight of a resin having transparency. 2. For example, the application of the patented coffee ^, the resin film for the optical film described in Item 1, wherein the fibrous or columnar skin, such as the work-human bait force combination, 7 〇 nm, ... contains: the average of the short axis diameter The average size of the long axis diameter of nm is ββηη is 0 (10) or more and the particles U) are less than 800, and the particles of the package axis diameter are random (four) particles having a smaller average diameter than the upper axis diameter (匕). The resin for forming an optical film according to the first or second aspect, wherein the fibrous or columnar particles are selected from the group consisting of oxygen', magnesium telluride, and barium carbonate, A group of inorganic crystal particles composed of calcium carbonate, magnesium carbonate, carbonic acid, carbonic acid clock, ascorbic acid disease, N-man's test sulfuric acid conversion, hydrogen peroxide oxidation, silk-like Sayang stone, and tantalum carbide. 4. For example, the application of the resin composition from the third to the third fiscal year, in which the right, class 0, a + ', T eight transparent resin, selected from polymethyl methacrylate, poly Phenylethylene, stupid ethylene propylene, copolypolymer, polyfumaric acid, brewing, polycarbonate, poly-aromatic, poly-shock, cyclic polyolefin, maleic amine-based copolymer, poly-p-benzene A group consisting of ethylene glycol diacetate and polyethylene naphthalate. '5·If you apply for a patent range! The resin composition for an optical film according to any one of the invention, wherein the film haze value is 1% by mass or more. 6. The optical film 7042-9447-PF according to any one of claims 1 to 5; Ahddub 200902618, a resin composition in which a resin having transparency and fibrous or columnar particles are used The shear rate was 5,50,000 sec' for dispersion mixing. The 胄A pre-film </ RTI> is characterized in that it comprises the optical film (four) fat composition as described in any of the above-mentioned claims. 8. The optical film of claim 7, wherein the optical film of claim 8 is extended as follows: wherein the glass transition temperature of the resin having transparency is extended (eg, by generation) ~Tg+40°C uniaxially extending and aligning. 10. The optical film according to claim 8 wherein, when extending, the glass transition temperature of the transparent resin is 35 (rc is the upper limit of Tg+1) </ RTI> </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The plate is laminated. 12. A π degree lifting film, comprising: the optical film described in claim 11 of the patent scope. 7042-9447-PF; Ahddub 36