TW201042300A - Polarizing component protection film, polarizer and liquid crystal display component - Google Patents

Abstract

This invention is to provide a novel cellulose ester-made polarizing component protection film implementing the easily bonding shape of a polarizing component made of polyvinyl alcohol (PVA), a polarizer having the polarizing component and a liquid crystal display component. This invention is a polarizing component protection film characterized in that: it contains a transparent substrate layer made of cellulose ester and contains concave and convex shapes formed on the inner surface of the substrate layer, wherein the arithmetic surface roughness of the inner surface of the substrate layer (Ra) is between 1 micron and 10 microns, the ten-point mean surface roughness of the inner surface of the substrate layer (Rz) is preferably between 2 microns and 60 microns, and the roughness ratio (Rz/Ra) of the ten-point mean surface roughness (Rz) to the arithmetic surface roughness (Ra) of the inner surface of the substrate layer is preferably between 1 and 15.

Description

[Technical Field] The present invention relates to a polarizing element protective film, a polarizing element protective film having a polarizing element protective film, and a 9-crystal display element having a seesaw. [Prior Art] In recent years, since a liquid crystal display (LCD) is thin, lightweight, and consumes a small amount of power, it can be widely used in place of a cathode ray tube (CRT). The field of use of liquid crystal display devices has expanded from small products such as calculators and clocks to large-scale products such as automotive instruments, PC monitors, and televisions. - As shown in FIG. 5, a general liquid crystal display 7G member 21 disposed on a liquid crystal display device has a liquid crystal cell 25 which is formed by sandwiching a liquid crystal layer 27 between two transparent dielectric layers 26 (for example, glass). The polarizing plate 22 is formed by bonding the polarizing element protective film 23 to the both surfaces of the polarizing element 24 having polarizing energy via an adhesive; and having the polarizing plate 〇 from the upper and lower sides of the liquid crystal via the adhesive layer 28 The structure formed by the unit 25. As described above, the polarizing element 24 is protected by the polarizing element protective film 23 from the viewpoint of improving the strength and facilitating the operation. The material of the polarizing element is usually polyvinyl alcohol (polyvinyl alcoho PVA) as a hydrophilic resin, which is dyed by iodine or a dichroic dye after uniaxial stretching of the pVA film, or stretched after dyeing. Then, crosslinking with a boron compound forms a polarizing element. Further, the polarizing element-protective film is required to be optically transparent and has low birefringence and excellent adhesion to a polarizing element composed of PVA. Therefore, triethylene carbonate 201042300 cellulose (TAC) is usually used. A polarizing element composed of a polyethylene glycol as a hydrophilic resin, followed by a water-based adhesive, followed by a polarizing element composed of a polyethylene glycol as a hydrophilic resin. - - The ethyl phthalate film is usually produced by a solution casting method. The film method is a so-called doping (") solution in which triacetyl cellulose is dissolved in an i-based solvent or the like. , a method of forming a film by forming a film on a 2-turn hot end belt or a barrel as a support. After the casting, the solvent is partially dried on the support and peeled off from the support to be cured. The film is obtained by drying the remaining solvent to obtain a triacetonitrile cellulose film. The method of removing the solvent remaining in the formed film, or the time of evaporation of the solvent and the regeneration device, etc., causes the device and Since it is a waste product, since a halogen-based solvent is used, it is necessary to develop a substitute material and other manufacturing methods in terms of a ring-side and a d. m Η : Surface 'also proposed to be manufactured by a melt extrusion method. Fiber, etc.). In the cellulose ester film obtained by the above methods, there is a problem that a sufficient surface of the polarizing element composed of PVA cannot be obtained due to the smooth formation of the surface. Follow-up. 。 。 。 。 。 。 。 。 。 。 。 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 The purpose of the research is to provide a cellulose vinegar polarizing element protective film which has an easy-to-shape shape for a polarizing element composed of a medium 7 Ui 4 dilute alcohol, and a polarizing plate having such a polarizing element protective film. And liquid crystal display elements. Means for Solving the Problem The invention completed to solve the above problems is a polarizing element protective film having a cellulose S-made transparent substrate layer, which is characterized in that: eight layers are formed into fine layers on the inner surface of the substrate layer. In the uneven shape, the arithmetic surface roughness (Ra) of the inner surface of the base material layer is 1 # m or more and i / m or less. In the inner surface of the base material layer, the inner surface of the base material layer has a fine uneven shape such that the surface roughness (Ra) of the inner surface becomes i#m or more and 1 〇#m or less. Since the polarizing element protective film has a fine uneven shape of the above-described size on the entire inner surface of the base material layer as described above, the surface area of the inner surface of the base material layer is remarkably increased. Therefore, according to the polarizing element protective film, since the area in which the polarizing element or the adhesive layer contacts the inner surface of the substrate layer is remarkably increased, the adhesion is improved. Further, if the cellulose having a wide surface area on the inner surface is saponified as described above, the hydroxyl group ratio of the hydrophilic group generated on the inner surface is generally increased, thereby being composed of polyvinyl alcohol. The adhesion between the polarizing element and the adhesive layer formed is also effectively improved. The ten-point average roughness (Rz) of the inner surface of the base material layer is preferably 2 or less and 60 or less, and the ten-point average roughness () of the inner surface of the base material layer is rough with respect to the arithmetic mean roughness (Ra). The ratio (Rz/Ra) is preferably 1 or more and 15 or less. By setting the ten-point average roughness (Rz) of the inner surface of the base material layer within the above range, the surface area of the inner surface can be further enlarged, and the adhesion can be improved. In addition, the fine uneven shape of the inner surface of the base material layer has a roughness ratio (Rz/Ra ) within the above range, so that the entire surface has a fixed roughness and is formed substantially uniformly, thereby increasing the base. The surface area of the inner surface of the material layer can reduce the unevenness of the unevenness. Therefore, according to the protective element of the polarizing element, the subsequent uniformity with the polarizing element can be improved, and the bright spot on the film can be reduced, and the quality of the protective film as the polarizing element can be improved. The above cellulose ester is preferably acetic acid propionate fiber t. Since the dissolution of the cellulose acetate propionate is excellent in shape, the uneven shape of the inner surface of the substrate layer can be easily and economically formed. Further, cellulose acetate propionate is easily subjected to deuteration treatment. The hydrophilicity of the inner surface of the base material layer can be easily and sufficiently exhibited by the interest. The element protective film may have an antireflection layer laminated on the outer surface side of the substrate layer (for example, an antireflection layer including an anti-glare layer or an anti-reflection layer) or a hard-light element protective film. The liquid crystal ^ Yuanxin f field has a polarizing element of the anti-reflection layer and can be pinched and protected. In addition, the polarizing element further has a hard coating effect by the polarizing element. Strengthening the protection of polarizing elements

Preferably, the polarizing element protective film is formed such that __Veta is formed, and _ of the inverted shape of the inner surface is formed in a layered shape of the other substrate. By using the second embodiment of the extrusion sheet forming method, the shape or the specific shape of the inner surface of the substrate layer can be changed, and the surface of the substrate layer can be formed. In addition, the shape and shape of the inner surface of the base material layer are simultaneously formed by the 出 forming 201042300 I by using the surface roughening degree or the like, and the formed film is wound. Since the unevenness of the inner surface of the base material layer can reduce the adhesion between the films, it is possible to manufacture a film having a long roll. The polarizing element having polyvinyl alcohol and the two side faces of the polarizing element are laminated. In the polarizing plate for the polarizing element protective film, it is preferable to use the polarizing element protective film having a fine uneven shape on the inner surface of the base material layer as at least a sheet polarizing element protective film. In the polarizing plate, On the at least one surface side of the polarized light 70, the polarizing element protective film having the substrate layer which is easy to form the shape of the polyethylene sterol is used, and the adhesion between the polarizing element and the protective film of the polarizing element can be improved. , The durability and the operability of the polarizing plate are improved. In the liquid crystal display element having a liquid crystal cell and a pair of polarizing plates laminated on both side faces of the liquid crystal cell, it is preferable to use The polarizing plate of the polarizing element protective film having a fine uneven shape on the inner surface of the base material layer is used as at least one polarizing plate. In such a liquid crystal display element, the adhesion between the polarizing element and the polarizing element protective film and the subsequent durability are high. Since the polarizing plate has excellent strength workability, the specific performance of the liquid crystal display element is stably exhibited for a long period of time, and the reliability is improved. Further, in the present invention, the "inner surface" means between a pair of polarizing element protective films. In the polarizing plate in which the polarizing element is sandwiched, the center of the polarizing element side, the "outer side" refers to the side opposite to the polarizing element side of the center. Further, the "surface side" such as the "outer side" means not only The case where the layer is directly laminated on the one surface, and also includes the layering via other layers. In addition, "arithmetic mean roughness (Ra)" and " Point average roughness (Rz of) "according to JIS B〇6〇1 1994, λ c is the cut-off value of 2 5 7 201042300 ° almost" value when a length of 12.5 mm. Advantageous Effects of Invention As described above, the yoke element according to the present invention protects the chess surface from forming an easy-to-adjust shape for a polarizing element composed of polyvinyl alcohol, and m-concave (four) 'and thus having a polycondensation as a hydrophilic resin The adhesion of the polarizing element is drastically improved. Further, the film of the extruded sheet can be made long by the shape of the unevenness. In addition, the polarizing plate has the protective film of the polarizing element, and the polarizing plate is improved in strength and knowledge. Further, since the liquid crystal display element has the polarizing plate, the desired characteristics can be stably exhibited for a long period of time. [Embodiment] 1 Yes! The polarizing element protective film of the present invention and the polarizing element protective film of the present invention will be described in detail with reference to the drawings as appropriate. Precursor plate and liquid crystal display element having polarizing plate The polarizing element protection of Fig. 1 includes a transparent substrate layer 2. The base material layer 2 is made of cellulose vinegar. It is preferably ^ ^ , the grade § 1 tn ^ % f ^ θ temple is preferably the lower diterpene of the cellulose "atoms of fatty acids, for example, acetic acid fibrin," another cellulose, cellulose butyrate Or, particularly preferably, the cellulose acetate propionate is added with one or more kinds of additives to the cellulose-external base material layer 2 such as cellulose acetate propionate. The surface = (4) 2 is cellulose vinegar, so The surface is made into a transmissive group which is a hydrophilic group by means of a commercialization treatment, thereby easily adhering to a polarizing element composed of a polyethylene glycol as a hydrophilic resin. Particularly 201042300 is available according to cellulose acetate propionate. </ br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> It is also excellent in terms of the surface and the energy saving. The stewed base material layer 2 has a fine structure of the fine concavo-convex shape 3 formed on the inner surface. Surface roughness of the inner surface of the layer 2, Ra Γ瞀下限 ο 平均 平均 平均 的 的 的 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 较佳 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Since the polarizing element protective film i has the fine uneven shape 3 of the above-described size on the entire inner surface of the base material layer 2, the surface area of the inner surface of the base (4) 2 is remarkably increased. In the polarizing element protective film i, the area in which the polarizing element or the adhesive layer is in contact with the inner surface of the base material layer 2 is increased, and the adhesion to the polarizing element and the adhesive layer is improved. When the cellulose ester base material layer 2 having a substantially wide surface area on the inner surface is subjected to crystallization, a large amount of a warp group as a hydrophilic group is generated on the inner surface, thereby being treated by polyvinyl alcohol in this manner. When the surface roughness of the inner surface of the base material g 2 is less than the above range, the surface area of the inner surface of the base material g 2 is not sufficiently increased, so that the adhesion is improved, and the adhesiveness of the inner surface of the base material g 2 is less than the above range. Not obvious. In addition, if the surface of the inner surface of the substrate layer 2 is When the sugar content exceeds the above range, the uniformity of the surface of the transmitted light is lowered. Further, since the inner surface of the base material layer 2 has the uneven shape 3 described above, the base material layer 2 or the polarizing element protective film i is formed and used. When the roll is wound, the uneven shape 3 can be used to prevent intimate contact between the films. Therefore, according to the 9 201042300, adhesion after winding can be prevented and the film can be made into a long-length polarizing element protective film of 1 inch. The surface roughness is preferably ten points average roughness (10) ± 2 above 6 - below, preferably upper and lower by making the surface roughness of the inner surface of the substrate layer 2 within the above range, J-step The surface area of the inner surface is enlarged, and the adhesion to the polarizing element and the subsequent d layer is improved. When the ten-point average roughness (Rz) of the inner surface of the base material 2 exceeds the above-described circumference, the thickness of the base material layer 2 is extremely thin, and the strength of the base material layer 2 is lowered. When the ten point average roughness I (RZ) of the inner surface of the base material layer 2 is smaller than the above range, the surface area of the inner surface is not sufficiently increased, and the effect of improving the adhesion is not exhibited. Further, the ratio of the ten point average roughness (Rz) of the inner surface of the base material layer 2 to the rough roughness ratio (Rz/Ra) of the average roughness (Ra) of the opposite layer is preferably 15 or more and more preferably 15 Above 15 or less, the best is 2 or more to: Pass: The protective film of the polarizing element is preferably protected by a polarizing element with less bright spots, and the point of exemption in May is positive? W + P I J· 乂 Two polarizing plates were placed, and the polarizing plate/cellulose vinegar film was observed, and the point where the cellulose vine film was leaked from the surface of the polarizing plate was observed. The ten-point average coarse thousand degree (Rz) is a parameter indicating the size of the unevenness of the local portion, and the wire (four) ratio is large (the center of the core is large, and the large unevenness of the large one is 2). The local unevenness becomes the bright spot 111 on the film. In the fine concavo-convex shape 3 on the inner surface of the base material layer 2, the rough inspection is performed such that t (Rz/Ra) is in the above-described range, and the entire surface is substantially uniformly arranged to reduce the unevenness of the concavity r convexity on the inner surface, thereby reducing the bright spot and improving the work. 2. The quality of the protective film of the optical element. If the ratio of the thick chain of the inner surface of the base (4) 2 exceeds the above || circumference, the target is too small, because the light is in the polarizing element and the substrate layer 2. 10 201042300 The fine gap caused by the unevenness (4) 3 can be generated between the faces, and the density is reduced, and the adhesion is also decreased. Further, when the ratio (Rz/Ra) of the inner surface of the base material layer 2 exceeds the above range, the thickness of the base material layer 2 is extremely thin, and the strength of the base material layer 2 is lowered. The average thickness of the base material layer 2 is preferably 1 Å or more and 2 Å or less, more preferably 20 Å or less. The thickness of the base material layer 2 is 10 # m or more and a moderate degree can be obtained. The film can be produced in a stable and easy manner, and the thickness of the base material layer 2 can be increased, and the linear velocity, productivity, controllability, and the like at the time of production can be improved. The ester is made of cellulose as a raw material and is produced by deuteration of a hydroxyl group. In the cellulose used in the present invention, the degree of substitution of the cellulose group is not particularly limited, and the fat can be measured. The degree of substitution of the acid on the cellulose substrate is calculated by calculation. The substitution yield can be determined by the American Society for Testing and Materials (American s〇eiety ❹

The method specified in D_m_9i of TeStlngMaterial'ASTM) is performed. The cellulose acetate propionate used in the present invention preferably satisfies and (B). (A) (B) 2.0$ X+ Y Each 1.2^ 2.8 wherein X represents the substitution of the ethyl hydrazide with respect to the hydroxy group and the degree of substitution of the acetophenone basket with respect to the hydroxyl group of the cellulose. The "degree of substitution", the hydrogen atom of each of the 2, 3, and 6 positions of the cellulose: substitution::: The total of the examples °#2, 3, and 6 are all When the base is substituted, take 11 201042300 and the degree of generation is 3.

It is preferable that the AA (A,) and (B,) = 9 cellulose acetate propionate in the present invention satisfy the following formula to satisfy the following formulas (A") and (B"). (Α') (Β') (Α') (Α&quot;) (Β&quot;) 2-2g X+ 2 9 1 ·3 ^ 2.7 2·4^ Χ+ 2.8 1·4^Χ^2.6 ', the above formula of acetic acid propionate The bran is dipped like a tI fine, so that the hydrophobicity of the sulfhydryl group, the hydrophilicity of the sulfhydryl group is easily formed into a film shape. The acid cellulose can be synthesized by a known method. The cellulose ester used in the present invention preferably has a Mw/number average score of 2.0 to 50, and a special amount of cellulose ester of U~5·5, which is more desirable. 5~5.0, the best use of 3·〇~5.0, (4) The raw material of the cellulose vinegar used in this Maoming can be cotton lint, wood can be conifer or broadleaf can be wood In terms of the peeling property of the cockroach, the soil is a conifer. The cellulose vinegar prepared can be mixed properly, or alone:: from the original fiber ===_: derived from ... coniferous tree) t酉日. From wood pulp (broadleaf tree) 〇:0,90:mi5: 〇, 50.50.n ratio is _: 10 : 90 · η η ' 50 * 0 ' 20 : 80 : 〇, 15, : ° ' 〇: 〇: 100 ' «Ο: Ι0: 10. 85 、 40 ·· 30 : 30 to use. 12 201042300 In addition, cellulose having a small amount of cellulose used in the present invention is brewed. The reason for the bright spot is that -3 = bright unreacted cellulose at the time of film formation, which can be reduced by the cellulose contained in the cellulose by the cellulose:::: melt:: vitamins - removal is not reversed The thinner the thickness, the brighter the number of bright spots per cumber area ❹1 =: To: The less the film content of the film, the less the bright spots. The cellulose ester of s is preferably a bright spot, preferably 0.01 mm or more in diameter, preferably 200 pieces/cm 2 or less, 妁 s and s, and more preferably 100 pieces/cm 2 or less under X.

Below 50/cm, it is particularly good for 30/cm2 or less, below /cm2, and the helmet is arbitrarily-introduced, and it is particularly good for 10 or less. In addition, for the point of the side of the _ to _0.01 mm or less, it is preferably 2 “ "2 or less 100 pieces / cm 2 or less, particularly preferably 50 徊 / Λ 2 horse 50 / Cm or less, and particularly good. It is 30/cm2 or less, and particularly preferably 1 //cm2 to ^ ^. The following is the best. There is no bright spot at all. By removing the bright foreign matter by filtration, it is better than melting/solving the cellulose vinegar earlier than In the melt to be formed, it is preferable that the removal efficiency of the bright spot foreign matter is increased according to the composition in which the plasticizer is mixed. It is also possible to filter a composition in which the ultraviolet absorber and other additives are appropriately mixed. The viscosity of the melt containing the cellulose ester is preferably 1 〇〇〇〇p or less, more preferably 5,000 P or less, particularly preferably 1 〇〇〇p or less, and most preferably 5 〇〇p or less. The filter medium is preferably a conventionally known filter material such as a fluororesin such as glass fiber, cellulose fiber, filter paper or tetrafluoroethylene resin, and particularly preferably ceramic or metal. The absolute filtration accuracy is preferably 5 〇&quot; m or less. Filter material, more preferably 30 // m or less filter material, especially good for 丨〇# claw The filter media below is preferably a filter material of 5 or less. The filter media can also be used in combination. The filter material can be surface type or deep plastic (depth 13 201042300 type ) The filter medium is relatively flat and the chicken is clogged and can be preferably used. The cellulose ester of the raw material is preferably a cellulose ester obtained by drying a solvent after dissolving it in a solvent.

Further, it is at least one of a plasticizer, an ultraviolet absorber, and a matting agent. _ A L.

A cellulose ester. In addition, the optimum force W is a cellulose ester which is cooled to -2 (TC below) during the release process. By adding this fibrin ester, the uniform fraction of each additive which becomes a molten core and % is increased. , JJ is excellent in terms of knife-like properties and uniform in optical properties. In particular, the addition of such a fiber-loaded or quasi-ester ester to the total weight ratio of the total cellulose ester is more than (Wt%) 'Jiwei five $ '〇 / , Quan Jia is 5 wt% or more, more preferably 10 wt% or more 'extra good is 30 wt% or more, and more preferably 50 wt% or more, the best solvent It is preferable to dissolve all of the cellulose ester raw materials. The polarizing element protective film 1 + of the present invention is also preferably a pancreas-like southern molecular component in which a polymer component other than the cellulose S is appropriately mixed. The compatibility with the cellulose ester is excellent, and the transmittance of the knives is preferably 80% or more, particularly preferably 9% or more, and most preferably ignited or higher. The cellulose vinegar used in the present invention may contain more than one type of additive. The additive may be mixed with the cellulose in advance, and the α' may be mixed in the middle of the broadcaster in the melt extrusion method. For the &amp; 均 地 添加 添加 添加 , , , , , , , , , , , , , , , , , , , , , , , , , , 静 静 静 静 静Into the Zhuangli.- Find 'Kun η 4 set. Additives include: plasticizers, anti-emulsifiers, acid-trapping agents, light stabilizers, peroxide decomposers, radical scavengers, metal deactivators (added &amp; can, UV absorbers, matting agents, dyes) Etc.. Inch is 7b/, and it is also possible to use an additive not classified in the above-mentioned formula for the addition of the above-mentioned functions. The cellulose constituting the substrate layer 2 preferably contains a plasticizer to improve the machine. From the viewpoint of imparting flexibility, imparting water absorbability, and reducing water permeation through the film of 2010201042300, it is preferable to add a well-known compound as a plasticizer to the base material layer 2. In addition, a plasticizer is added. The invention has the following objectives: when the substrate 2 is formed by the melt extrusion method, the melting temperature of the film constituent material is increased by adding a plasticizer, and the glass transition temperature of the cellulose ester is used alone. Or, under the same addition & U heating / dish degree, the viscosity of the film-forming material containing the plasticizer can be lower than the viscosity of the fiber phase. Here, in the present invention, the so-called film forming material has a melting temperature. ' It refers to the temperature of the heating material in a state in which the material is heated to exhibit fluidity. When the cellulose is used alone, if it is lower than the glass transition temperature, the fluidity for film formation is not exhibited. From the temperature above the glass transition temperature, 'the modulus of elasticity or the viscosity decreases due to the absorption of heat, and the fluidity is exhibited. In order to satisfy the above purpose, the film constituent material is melted, preferably the added plasticizer has lower than the fiber. The melting point of the glass transition temperature or the glass transition temperature of the tempered glass. Examples of the plasticizer include: acid-breaking triphenyl styrene, tricotinic trimethylbenzene sulphate, toluene benzene benzene vinegar, acid octyl diphenyl hydrazine, phthalic acid diphenyl phthalate Phosphate-based plasticizers such as phenyl vinegar, trioctyl phosphate, tributyl sulphate, tri-n-butyl phosphate, tris(diphenyl) phthalate, di-diphenyl phosphate, etc.; diethyl phthalate, Phthalate such as dimethoxyethyl phthalate, dioctyl phthalate, dibutyl phthalate, di(2-ethylhexyl) phthalate Dicarboxylic acid vinegar plasticizer; glycerol triacetate vinegar, glycerin Tributyric acid vinegar, butyl phthalic acid glycolic acid butyl phthalate, ethyl phthalic acid glycolic acid ethyl phthalate, decyl phthalic acid glycolic acid, etc. Etc. Among them, the o-dicarboxylic acid I-based or glycolic acid-based plasticizer is preferred because it is difficult to cause hydrolysis of cellulose vinegar. Further, it is preferred to contain a plasticizer having a freezing point of 20 15 201042300 ° C or less. For example, the agent may be exemplified by: tridecyl sulphate yttrium phenyl phenyl phenylate, tributyl phosphate, diethyl phthalate, dinonyl phthalate, dioctyl phthalate, and stupid Dibutyl acetonate, bis(2-ethylhexyl) phthalate, ethyl ethyl o-glycolyl glycolate, etc. In addition, in plasticizers, it is particularly preferred to use non-volatile The term "non-volatile plasticizer" means a compound having a vapor pressure of 20 mmHg or less at 20 °C, and means a compound having a very low vapor pressure and having a low volatility. It is preferably 5 mmHg or less, more preferably 1 mmHg or less. Specific examples thereof include a nonvolatile phosphate ester, and for example, an arylene bis(di-based disc acid) is preferred. From the viewpoint of dimensional stability, the cellulose ester is preferably 0.1 wt% 〃 wt0 / 〇. The content of the above plasticizer is relatively less than 30 wt% ─ preferably 0.5 wt% ~ 乂土达., - 丁人丨土句 below, preferably 14. (: The following plasticizer. By solidifying... a low plasticizer, the flexibility of the cellulose S film can be improved to improve the processability of the film. Preferably, it contains an antioxidant, an antioxidant, a phosphorus-based antioxidant, a sister cough, etc. ((10) state n seavenger), etc. &quot;anti-emulsifier is preferably a phenolic antioxidant 4 The base is made of 4 anti-emulsifier. It can reduce the transparency by blending the resistance to sputum, etc., and it will not reduce the transparency..., 丨王寺, can prevent 丨 氺 氺 + w +

The output V is guided by heat or oxidative degradation of the molding %, and the special emulsifier can be used alone or in combination of two or more, and the amount of the anti-emulsifier can be named 16 201042300 The polymer ΗΚ) by weight is suitably selected within the range not detracting from the object of the present invention, and is preferably _4 2-4 4 parts by weight of the invention, more preferably 0.005 parts by weight to 1 part by weight. &amp;&amp;&gt; An acid scavenger may be added to the cellulose vinegar constituting the base material layer 2. The _ getter is preferably an acid sound absorbing agent containing an epoxy compound as an acid scavenger. Such epoxy compounds as acid scavengers are known in the art: diglycidyl ethers comprising various polyglycols, especially polyglycols condensed by the oxime of about 8 moles to 40 moles of epoxy a polycondensation of ethane or the like, a diglycidyl scale of an alcohol or glycerin, a metal epoxide (for example, a compound which has been conventionally used in a gas-ethylene polymer composition, and a polymerization of ethylene ethylene in the past). a compound which is used together with the composition), an epoxidized ether condensation product, bisphenol A (ie, 4,4,-dihydroxydiphenyl 2 dimethyl decane) hydrazine diglycidyl ether epoxidized unsaturated fatty acid: And a cellulose ester which comprises a epoxidized long-chain fatty acid triglyceride, etc. (the epoxidized vegetable oil represented by the composition of soybean oil, and other [=== oil] 〇 constituting the base material layer 2 preferably contains an ultraviolet absorber. From the viewpoint of preventing deterioration of ultraviolet rays by the polarizing element or the display device, an ultraviolet absorber having excellent absorption energy of ultraviolet rays having a wavelength of 370 rim or less is preferable, and from the viewpoint of liquid crystal display properties, the wavelength is preferably Ultraviolet absorber with less absorption of visible light above 400 nm. For example, the oxybenzophenone-based compound, the benzotriazole-based compound, the salicylate-based compound, the benzophenone-based compound, the cyanoacrylate-based compound, and the nickel complex-based compound are listed. Preferably, it is a benzophenone compound or a benzene trisalt compound which is less colored. 17 201042300 Specific examples of the benzodiazole-based compound include 2-(2,-hydroxy-5,-methylphenyl)benzotriazole, 2-(2|-hydroxy-3,5,_2 Tert-butylphenyl)benzotrisole 2-(2'-carbyl_3,_t-butyl-5,-methylphenyl)benzotriazole, 2_(2,_ Luogong soil 3,5 —Secondyl phenyl)·5—Chlorobenzotrifene, 2—(2,_Phase 3 (3,4 ,5 ,6 _tetracholine phthalimidomethyl) -5,··methylphenyl)benzotriazole, 2,2-methylenebis(4_(1,丨,3,3_tetradecylbutyl)_6_(211_benzotriazole-2- Phenyl), 2_(2,_hydroxy_3,_t-butyl-5,-methylphenyl)_5 gastric chlorobenzotriazole, 2_(2Η_benzotriazole_2•yl)_6_ (straight chain and branched dodecyl)-4-methylbenzene g, 3·[3_t-butyl_4•transcarbyl_5_(gas_2η.benzotris-_2-yl) Phenyl]octyl propionate and 3-[3-t-butyl-4-yl-hydroxy-5-(5-gas-2Η-benzotriazol-2-yl)phenyl]propanoic acid _2_ethylhexyl The mixture or the like is not limited to the compounds. In addition, commercially available products can also be used with TINUVIN 1〇9, TINUvin i7i, TINUVIN 360 (both &amp; Ciba Specialty.). Specific examples of the benzophenone-based compound include 2,4-dihydroxydibenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, and 2-hydroxyoxy-sulfoyl group. Diphenylmethyl hydrazine, bis (2 methoxy _ 4 • thiol _5 benzoyl phenyl fluorene, etc. 'but not limited to these compounds. UV absorbers relative to cellulose s Preferably, 〇. iwt %~2 〇..../.' is better for adding...^(eight)~(7)(10)'best is added ^./.~, wt%. These ultraviolet absorbers can also be used in combination of two or more. The method for producing the base material layer 2 is not particularly limited. For example, an additive such as a sheet raw material and a plasticizer for cellulose can be mixed by a known mixing method, and a thermoplastic resin composition is prepared in advance to produce a base material layer 2. The teaching plastic resin composition can be obtained, for example, by universal mixing, Ummmi, etc., and then obtained by extruding and kneading the obtained mixture, which is used for extrusion and kneading. Not specifically limited, for example

A kneading machine such as a single-axis extruder or a twin-screw extruder or an additive kneading machine. A method of forming a film of the base material layer 2, for example, a solution method liquid casting method, a melt extrusion method, a press method, and the like can be mentioned. "In the method: (endar), 1 shrink forming method, preferably solution casting method ❹ flow casting method) or smelting and extruding method, especially for smelting and extruding method. smelting extrusion, go: It is formed by using a solvent. Therefore, it is excellent in terms of environment and energy saving. In addition, it is used in the form of a cereal and is formed by the use of a cereal. Therefore, the residual organic matter contained in the cellulose film after film formation remains. The solvent amount is stable and less than Giwt%, and a cellulose film having a stable retardation (akisaki (10)) value can be formed by wearing the same. The solvent of the liquid coating method (solution casting method) can be exemplified by: , - 虱 methane and other gas solvents; toluene, xylene, benzene and 汾 * “ "" solvent; methanol, ethanol, isopropanol, n-butanol, 2-butanol and other alcohol-based solvents; methyl cellosolve , cellosolve, dimethylmethyl butyl tetrahydrofuran, propylamine, methyl amide '~ alkane, cyclohexene', ether, and the like. These solvents can be used only with ethyl ketone, methyl ethyl ketone, or a mixture of two or more. For solution casting, the liquid can be used as a cartridge. Casting machine, spin coater 2 clothes, example, pgi extrusion method, can be listed as a lining of the inner surface of the base material layer, and the melted cellulose ester is transferred to the masked sheet of the above shape by the following:: (four) mold and In other cases, it is preferable to extrude the 19 201042300 month forming method in order to form the r 2 and 2 in the inner surface, and to perform the film formation by the extrusion crucible method: The single-axis extruder has the following method: 竿 竿 说 说 说 说 或 或 或 或 说 说 说 说 说 说 说 说 说 说 说 说 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装士 m ^ 炫 融 融 悲 的 ' ' ' ' ' ' ' ' ' 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 通过 φ φ φ φ φ The formed film is wound in a shape of μ ^ ^ 4. The melting temperature in the sheet forming method is preferably from about 1.7 ° C to about 27 ° C, more preferably in the form of mi / m The temperature of the extruded smelting tree wax is 23 (TC ~ 260. 〇 &quot; ° week positive melting temperature. By making the melting temperature within the above range, the deterioration of the cellulose resin can be reduced and the main

The deterioration of the vapor color 4 (yel value). Further, 'the roll mold having the reverse shape of the inner surface of the base material layer 2 and other light surface temperatures is preferably 6 G ° C to 150 t: and more preferably 7 (rc 〜 14 〇 C ' is preferably 8 〇. C - ί4 O, y ± -c. ±a / &lt; j, i 35 C. The surface temperature of the two rolls is within the above range to improve the formability. According to the extrusion sheet forming method, Since the embossing process shapes the uneven shape 3 on the inner surface of the base material layer 2, it is possible to easily and accurately adjust the size or shape of the uneven shape 3 and the surface roughness of the inner surface of the base material layer 2. The film forming is performed simultaneously with the uneven shape 3 of the inner surface of the base material layer 2 by the extrusion sheet forming method, and when the formed film is wound, the inter-film shape is reduced due to the presence of the uneven shape 3 on the inner surface of the base material layer 2. Adhesion. Therefore, according to this method, adhesion after film winding can be prevented, and a film of extra long roll can be manufactured. In addition, when winding the formed film, the temperature of the winding roll is appropriately adjusted, 20 201042300 . Stretching is applied in the extrusion direction, whereby it can also be a uniaxial stretching step. By adding the film to the extrusion side The step of stretching in the vertical direction, 'can be added in the order of sequential biaxial stretching, simultaneous biaxial stretching, etc.. The material layer 2 can be an unstretched film or a stretched film. Stretching: early axial pulling The stretch film may also be a biaxially stretched film. When it is a biaxially stretched film, it is a film which is simultaneously biaxially stretched, and may be a film successively. Each y-she ±, V In the case of biaxial stretching, the mechanical strength is improved and the film properties are improved. The stretching temperature of the stretching step is preferably carried out in the vicinity of the glass transition temperature as the film raw material of the vitamin ester, specifically = temperature - We ~ (glass transition temperature ... under = = (breaking glass transfer temperature _2G) t ~ (glass transition temperature + 8 〇 more right stretching temperature is lower (glass transition temperature _3 〇: draw ratio, It is not good. If the stretching temperature is higher than (glass: 〇), it will cause the flow of the resin to be impossible; 2 stretching, so it is not good. It is better to set the ratio to the ratio of 1.3 times to 1 inch. If the pull = ', it will not increase with the stretching, so it is not good. If the two is more than 25 times, then It is impossible to confirm the effect of only increasing the stretching ratio, and the surface roughness of the concave-convex shape 3 on the inner surface is lowered. 4 The stretching speed (one-direction) is preferably about minutes~2_state range' is better for war/minute~ Chest Q%/min = clock, in order to obtain sufficient stretching ratio, flower = is not good because of high manufacturing cost. If it is faster than 2_〇%/min: two causes breakage of the stretched film, etc. In addition, in order to make the substrate; 7: 21 201042300 optically isotropic or mechanical treatment (annealing), etc., 敉, can also be used after the stretching process on the surface of the hot embossing roll roll (base-turn shape The smear of the concave-convex shape 3 on the inner surface of the enamel layer 2 of the enamel layer can be formed by, for example, spraying H, wet spraying, or forming. With this method, it is easier to open the sand: the consumption of the inverted shape of 3 . In the above, when the reverse shape mold is used, the coarseness ratio can be more uniformly formed (the roll mold of (10)/forming can be formed on the inner surface of the base material layer 2 as a stretched film:] The shape of the four-convex shape 3. In addition, the shape of the roll mold is appropriately adjusted according to the draw ratio in the base material layer size, and the monthly formation is preferably performed several times. Uniform roll mode. According to the polarizing element protective film 输 2: the formed mode can be stepped down. In addition, in the jet processing; the two-sided read ratio (RZ / Ra) and tA soil ^ The average particle size of the T &amp; sprayed microparticles is preferably ~^m in the case of an unstretched film, and preferably less than 10 m in the case of 'Dandu Dhanhan'. In addition to the above method, for example, the following method may be used: a fiber, in which a layer of acetic acid = 11 is laminated on a sheet mold having an inverted shape of the uneven shape 3 Forming the polarizing element protective film Μ (b) by stripping the sheet mold in an injection molding method having a concave-convex shape 3 cellulose acetate; Injecting and smelting (C) into the mold will re-heat the sheet-like cellulose acetate, and the method of transferring the shape between the mold and the metal opposite to the above-mentioned 22 201042300' can be pressed to transfer the shape. The surface of the base material layer 2 on the 'outer side (the side on which the fine uneven shape 3 is not formed) may be arbitrarily composed of various functional layers such as an anti-glare layer, an antireflection layer, an antiglare layer, and a low refractive index. An antireflection layer such as a layer, an antistatic layer, a hard coat layer (hardened resin layer), an optical compensation layer, or the like is coated, for example, an antiglare layer (antireflection layer) is further provided by a polarizing element protective film, and a polarizing element is provided. When the polarizing element protective film 1 is laminated on the outer side, in addition to the protective function of the polarizing element, the anti-glare function can be exhibited. Further, the protective film of the polarizing element further has a hard coat layer to enhance the protection function for the polarizing element. Such an anti-glare layer may be, for example, a technique in which an uneven shape is formed on the surface of the film by an embossing method, or a coating liquid in which particles are mixed in a binder matrix forming material is applied to the surface of the film. The particles are dispersed in the binder base; and thus the uneven shape is formed. Further, as the hard coat layer, for example, a hard coat layer formed of an active wire hardening resin can be used. Examples of such an active wire hardening resin include an amine amide group. An acid ester resin, a polyester acrylate resin, a quinone oxy acrylate resin, a polyol acrylate resin, an epoxy resin, etc. As described above, the polarizing element protective film 本 according to the present invention is used in order to It is easy to form a polarizing element containing polyvinyl alcohol, and the base material layer 2 having the fine uneven shape 3 on the inner surface side is provided, and the cellulose ester is effectively formed by a deuteration treatment using a base described later. The adhesion to the polyvinyl alcohol as a hydrophilic resin constituting the polarizing element is improved. The polarizing plate 4 of FIG. 2 has a structure in which the polarizing element protective film 丨 has a pattern on both side faces of the polarizing element 5 made of polyvinyl alcohol. Each of the polarized lights 23 201042300 is bonded between the element 5 and the polarizing element protective film i by the adhesive layer 6. The polarizing element 5 is a polarizing element obtained by dyeing a polyethylene glycol resin film with a dichroic substance (for example, iodine or a dichroic dye) and uniaxially stretching the film. The degree of polymerization of the polyethylene glycol constituting the polyvinyl alcohol resin film is preferably (10) or less, more preferably 14 Å or more and 4 Å or less. Polyvinyl alcohol resin = thickness of the polarizing element 5 by a known method (for example, a flow casting method in which a resin is dissolved in water or a solution in which the organic solution is dissolved, and a die casting method) The purpose or use of the LCD using the polarizing plate 4 is different, and the blood is 5 # m or more and 100 Å or less. Polarizers Enol II may contain any component other than polydicarb and dichroic substances, without hindering the polarizing function and optical transparency. The representative production method of the alcohol tree (I) is carried out by a series of steps of forming, stopping, stretching, washing and drying the polyethylene, the tree, the skin, the skin, and the spleen. , manufacturing steps. In the respective treatment steps except the drying step, the acetol resin film was immersed in the bath for the solution used in each step. Swelling, &gt; The order of each treatment, such as stretching, washing, drying, and drying, can be appropriately set according to the purpose and materials/components. For example, the stretching order can also be equivalent to the swelling treatment. The Japanese priest P is treated in the wood color treatment before and after it~t. Further, it is preferred to carry out the cross-linking treatment at the stretching point. The swelling step of the polarizing element 5 can be carried out by immersing the bismuth film in the treatment bath in a treatment bath filled with water. The place::: = plus glycerol or exhausted. Typically, the swelling step is 2 (the interval between rc and 0.1 minutes is about 1/2 minutes). The dyeing step can be performed by immersing the polyvinyl alcohol 24 201042300: lipid film in a solution containing a two-color treatment bath such as hydrazine. The medium &amp;#m] treatment is carried out in the cold. The solvent used in the drink is usually 100% by weight relative to the solvent. The one-color substance is used in an amount of 0.1 part by weight to the inside. Typically, the A 1.0 weight is 3: the wound proportion

Left and right, the immersion time is 】 eight pulls and 20 C ~ 70 C between 1 minute ~ 2 〇 minutes or so. The crosslinking step can be carried out by immersing the dye in a center containing a crosslinking agent, and a boron compound such as boric acid is immersed in the resin film, and the example of the solvent is usually water. The medium solution of the combined type treatment bath is 2〇t~7〇t: y* 士八 The temperature of the treatment bath of the parent-linked step is about 丨 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 Lajia is more than 5 times. Stretching: The stretching ratio of the vinyl alcohol resin hydrazine is preferably a compound in which the iodine butterfly or zinc is added to the mixture, the ban or the organic solvent in the wet stretching method. The m 4 water washing step can be carried out by immersing each of the crucibles in a water bath to carry out an unnecessary residue of the resin film of the resin film, and first de-vinyllate (potassium iodide, sodium bromide #彳) / ",,,, 4 water, can also be iodine for lot ~ 6 (TC. Blood test 4 main wash cold temperature is better called typical dipping time for leap seconds ~ wash times can be only - times, It can also be used several times. Drying (4) The water is naturally dry, the air is dry, and the force is „heat drying. The typical 1 can be used, and the drying time is old... the clock can be used to manufacture the polarizing element 5. 仃The above steps It is preferable to perform saponification on the inner surface side (25 201042300 in which the uneven shape 3 is formed) of at least the base # @ 9 μ + spoon material layer 2 after performing the bonding with the polarizing element. By using the saponification, the vinegar group of the cellulose vinegar is substituted with a hydroxyl group as a hydrophilic group, thereby improving the partiality. The chemical protective film 1 of the element protective film 1 and the polarizing element 5 formed of polyvinyl alcohol as a hydrophilic resin are raw and clearly adhered to each other. The aqueous alkali solution used for the saponification treatment can be, for example, sodium hydroxide. An aqueous solution of potassium hydroxide hydroxide or lithium hydroxide, etc. The concentration of the metal hydroxide is usually 5% by weight or more and 4% by weight or less. Further, the temperature of the chemical treatment is preferably 1 m or less. When the concentration of the oxide is 5 wt% or less or the temperature of the saponification treatment is below the order, the time required for the saponification treatment becomes long, and the saponification treatment is poor. The saponification treatment is performed by immersing the polarizing element protective film j in the above It is to be carried out in an aqueous solution bath for a suitable period of time. :: The base material layer 2 of the optical element protective film 与 is bonded to the polarizing element 5, for example, polyethylene glycol, polyethyl butyric acid The polyvinyl alcohol is a squeezing 丨#" picker J, or a butyl acrylate such as ethylene emulsion or standing stability, etc., and then considering that the coating is preferably (M wt% 〜 15 wt 〇 / 1 _ fat The solid content concentration in the solution is, for example, preferably lmPa.s to 5°0 m. The range of the viscosity mPa _S of the resin solution of the r' adhesive agent is the same as that of the polarizing plate manufacturing apparatus of the polarizing plate manufacturing apparatus of Fig. 3, which is shown in Fig. 3. "Coupling two == optical element 5 is attached to a polarizing element in which the polarizing element 5 is wound into a roll shape: the device 7 is provided with a film I is wound into a roll of $ I __ • Kun 8, and the polarizing element is protected "The large partial protection section 10 and the roller 用以 for pressing and bonding the polarizing b carrier to the hand 3 and the polarizing element can be used. 濩臈1 is manufactured by following 26 201042300 polarizing plate In the rupture 7, the limbs ... ± T, the film-shaped polarizing element 5 supplied from the nip roller 8 and the polarized-protected polarizing element protective film 1 supplied from the roller 9 are sent in the direction of the radiation;忐, &lt; ® supplies an appropriate amount of the adhesive so as to hold the film between the films, and then presses the polarizing element 5 and the polarizing element protective film 1 with the 仃 〗 匕缂p is obtained as a structure of a protective layer of a polarizing element laminated on a single surface of the polarizing element 5. Next, the same method is used for the surface of the unbiased polarizing element protective film 1 on the side of the polarizing film, and the polarizing element protective film 1 is laminated, thereby causing pain π &amp;soil&gt; Tian was paid a partial lead 4 . Thickness of polarizing plate 4

The degree is typically 10#m or more and i〇〇#m or less. As described above, the polarizing plate 4' having the polarizing element protective film of the present invention has a fine uneven shape on the inner surface of the polarizing element protective film i disposed on both side faces of the polarizing element made of polyvinyl alcohol. 3. Therefore, the adhesion and peeling durability of the polarizer #5 and the adhesive layer 6 composed of polyvinyl alcohol and the polarizing film 7 can be improved, whereby the strength and operability of the polarizing plate 4 can be changed. . The liquid crystal display element 12 of Fig. 4 is configured by sandwiching both surfaces of the liquid crystal cell η of the liquid crystal layer 15 with a transparent germanium dielectric layer 14 (for example, glass), and bonding the same via the adhesive layer 16. The polarizing plate 4 of FIG. 2 (constructed by the polarizing element protective film 丨, the polarizing element 5, and the adhesive layer 6). The material of the liquid crystal layer 15 and the transparent dielectric layer 14 of the liquid crystal cell 13 and the layer 16 is not particularly limited, and a known θ _ ιτ can be used. Further, in the liquid crystal display device, a polarizing plate 4 (the polarizing plate of the present invention) of _ Ζ may be used on one surface side of the liquid crystal cell, and other polarizing plates of the technology may be used on the y 1 solid surface side of the liquid crystal cell. According to the liquid crystal display element 12 having the polarizing element protection 臈i and the polarizing plate 4 27 201042300 in which the present invention is disposed, since the polarizing element protective film is formed into an easily-adapted shape in which the fine uneven shape 3 is provided, the polarizing element 5 and the subsequent The adhesive layer 6 and the polarizing element protective film 1 have high adhesion and durability against peeling, and the polarizing plate 4 is excellent in strength and workability. Therefore, the respective performances of the liquid crystal display element are continuously and smoothly exhibited for a long period of time, so that the reliability of the entire machine becomes high. In addition, the polarizing element protective film, the polarizing plate, and the liquid crystal display 7L of the present invention are not limited to the above embodiment, and for example, a polarizing element protective film laminated on one side of the polarizing plate may be used. The polarizing element protects the film. The existing polarizing element protective film is used on the surface side which does not require strong adhesion, thereby reducing the manufacturing cost. EXAMPLES Hereinafter, the present invention will be described in detail based on examples, but the present invention is not limited by the description of the examples. In addition, in the present embodiment, "arithmetic mean roughness (Ra), and "ten point average roughness (Rz), {) according to JIS B0601-1994' set cutoff value c is 2.5 mm, evaluation length is 12 5 mm, use A stylus type surface roughness measuring instrument manufactured by Tokyo Precision Co., Ltd., "s 47 like A" was measured. [Example 1] [Preparation of resin composition for base material layer] Using triethyl urethane phosphate (a CAP 482-20 manufactured by Eastman Co., Ltd.) was used as a cellulose ester, and triphenyl phosphate was used. (available from Daeba Chemical Industry Co., Ltd.) 1 part by weight and 2 parts by weight of ethyl phthalic acid glycolate (manufactured by Daiba Chemical Industry Co., Ltd.) as a plasticizer, 28 201042300 with IRGANOX-ioio (BASF Japan) Manufactured in parts by weight as an antioxidant, using Ding INUVIN1〇9 (manufactured by BASF Japan) 〇曰.5 parts by weight, TINUVIN 171 (made by BASF Japan &amp; 〇) 〇5 reset parts, and TINUVIN 360 (BASF japan Manufactured) 3 parts by weight of 〇 as a UV absorber, using a biaxial kneading extruder at 2 〇 (2 fused under rc) ((4) into a noodle-like shape, the noodle-like mixture was solidified and cut in water, by This obtains particles of the resin composition. [Formation of Protective Film of Polarizing Element] Ο

G "The above-mentioned pellets are supplied to the extruder and heated and smelted in the next generation. The smelted resin is flaky from the extruder, and the light mold having a fine uneven shape and other light The nip portion 'and the transfer fine: convex shape' is then conveyed by pure rotation and solidified by cooling, thereby obtaining the bismuth protective film of the second embodiment 1. In addition, the temperature of the grease extruded from the extruder In addition, the surface temperature of the light mold and the pot roller having the fine concavo-convex shape is adjusted to 10 吖. The obtained inner surface of the protective film of the polarizing element is assumed to be an average thickness of the rib... [Example 2 In the fifth embodiment, the comparative example 1 and the comparative example 2, the interval between the wheel mold having the fine uneven shape and the other rolls was changed, and the Ra of the inner surface was obtained in the same manner as in the example N of the example i. And Example 2 to Example 5 in which Rz was different, and the first tl protective film of fen., and the comparative example 1 and the comparative example 2. The average thickness of the polarizing plates of the polarizing elements was 80. Em. The obtained polarizing elements are dry-protected and the values of 1^ and Rz on the inner surface of the film are于衣1. [Characteristic evaluation] The characteristics of the adhesion and peeling durability of each of the polarizing element protective films of the above-mentioned sheets were measured by the following method. [Saponification of the polarizing element protective film] Each of the above polarizing element protective films was immersed in 6 (TC, 2 mol/L (about 8 wt%) of a gas-oxidized sodium aqueous solution for 3 minutes to carry out saponification. Then, X washed 4 knives 4' and then 3 〇 °C 〇·〇1 ln〇i/L is immersed in an aqueous solution of sulphuric acid for 4 minutes. This is neutralized, then washed with water for * minutes. After washing with water, it is dried at 90 C for 3 minutes, and then naturally dried. In the hour, the saponified polarizing element protective film was formed. [Formation of polarizing element] The polyvinyl alcohol film having a film thickness of 200 m was uniaxially stretched (temperature n 〇 C, stretching ratio 5 times) A film having a film thickness of 40 #m was obtained, and the film was immersed in an aqueous solution of 0.15 g of moth and 1 〇g of dynasty potassium 1 〇g for 6 sec, followed by impregnation with 12 g of potassium iodide. And a boric acid 7·5 g of an aqueous solution of 68〇c. The film is then washed with water and dried to obtain a polarizing element. Production] The saponified polarizing element protective film and the polarizing element were cut into a size of 18 cm x 5 cm, and the polarizing element protective film and the polarizing element were superposed by an adhesive of a polyvinyl alcohol aqueous solution having a solid concentration of 2 wt%. Using a hand roller, the excess adhesive or air bubbles were removed and bonded together. The laminate was processed by a laminator pressurized to 2 kg/cm 2 and then dried at 8 crc. Thus, a laminate of a polarizing film protective film and a polarizing element is obtained, and the inner surface of the saponified polarizing element protective film (the surface to which the fine uneven shape is applied) is bonded to the polarizing element. (1) Adhesiveness 30 201042300 The two layers of the laminate (the polarized stripping) were manually separated by the degree of occurrence of the material damage. The evaluation results are shown in Table i. Good (A): no film and polarizing material destruction occurred. Component protection The film and the polarized light were evaluated by peeling, element between the following three grade elements, but the occurrence of defects and slight deviation (B) caused a part of the material to break the peeling between the light elements.不良 Poor (C) · The film and the polarizing element are completely peeled off. (2) Peeling durability The laminate was allowed to stand under conditions of 75 ° Cd and 90% RH for 5 hours, and the width of peeling from the end portion was measured. The evaluation criteria are as follows: ◎ The evaluation results are shown in Table 1. Good (A): Less than 0.5 mm Slightly poor (B): 0.5 mm or more and less than i 5 mm Poor (C): 1.5 mm or more ϋ

Ra Rz Rz/Ra ~--- Next ten 4 peeling durability A Example 1 1.0 2.0 2.0 Circle ''^---- _Α_ Example 2 1.4 5.6 4.0 ______A A Example 3 1.2 3.8 3.2 &quot;&quot; ---, A 实施 Example 4 2.6 15.8 6.1 AJ\ 实施 Example 5 2.0 30.0 15.0 ''''--- A i\ Λ Comparative Example 1 0.4 0.8 1.9 B r\ B Comparative Example 2 12.0 64.0 5.3 CC - ---------- 31 201042300 According to the results of Table 1, it is understood that the polarizing plates of Examples 1 to 5 have good adhesion and are excellent in peeling durability under severe conditions. In addition, the polarizing element protective film of Comparative Example 1 is brought into close contact with a conveyance roller or the like at the time of film formation, at the time of alkali treatment, or at the time of production of a polarizing plate, and if knurling treatment or the like is not applied to both end portions of the film, It is difficult to work. As described above, the protective film for outer surface of the polarizing element of the present invention has a base material layer in which one surface has a specific fine uneven shape, thereby being compared with a film composed of a base material layer having such a shape. The adhesion and peeling of vinyl alcohol were significantly improved. Industrial Applicability The liquid crystal display of the polarizing plate having the polarizing element protective film of the present invention is used, and the polarizing element protective film and the polarizing element can be reliably adhered to each other. Therefore, the liquid crystal display element and the liquid crystal display are provided. The overall electrical power of the components increases the reliability of the machine. Therefore, such a liquid crystal display element can be used in various fields from small products such as a different device or a clock, to an automobile instrument, a pc display, and a television. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a protective film of a polarizing element according to a specific embodiment of the present invention. Fig. 2 is a diagram showing the drawing. A schematic cross-sectional view of a polarizing plate of a polarizing element protective film of 1 is a schematic view showing an apparatus for manufacturing a deflecting plate of Fig. 2 闯z. 4 is a schematic cross-sectional view of a liquid crystal display element having the dummy of FIG. 2, and the production of the liquid crystal display element. FIG. 5 is a schematic cross-sectional view showing the configuration of a general liquid crystal display element which is disadvantageous for the technique. . [Description of main component symbols] 1 polarizing element protective film 2 base material layer 3 uneven shape 4 polarizing plate 5 polarizing element 6 subsequent layer 7 polarizing plate manufacturing apparatus 8 roller 9 roller 10 subsequent agent supply means 11 roller 12 liquid crystal display device 13 Liquid crystal cell 14 transparent dielectric layer 15 liquid crystal layer 16 subsequent layer 21 liquid crystal display element 22 polarizing plate 23 polarizing element protective film 24 polarizing element 25 liquid crystal early element 33 201042300 26 transparent dielectric layer 27 liquid crystal layer adhesive layer 28

Claims (1)

201042300 VII. Patent application scope: A transparent substrate made of cellulose ester 1, a protective film layer of a polarizing element, characterized by having a fine uneven shape formed on the inner surface of the base material layer, and an arithmetic mean roughness of the inner surface of the base material layer The degree (Ra) is from m or less. G 2 is a polarizing element protective layer according to claim 1, wherein the ten-point average roughness (Rz) of the inner surface of the base material layer is 2/zm or less and 6 I or less. 3. A protective film for a polarizing element according to the second or second aspect of the patent application, wherein a roughness ratio of a ten point average thickness (four) (Rz) to an arithmetic mean roughness (Ra) of the inner surface of the base material layer (Rz/Ra) ) is 1 or more and 5 or less. 4. The protective film for a polarizing element according to claim 1, wherein the cellulose vinegar is cellulose acetate propionate. 5. The polarizing element protection crucible of claim No. </ RTI> which has an antireflection layer or a hard coat layer laminated on an outer surface side of the base material layer. 6. The polarizing element protective film according to claim 1, which is formed by an extrusion sheet forming method, that is, a cellulose ester in a molten state is passed through a roll having an inverted shape of the inner surface of the base material layer. The shape of the mold and the other portions of the roll are transferred. A polarizing plate comprising: a polarizing element having polyvinyl alcohol; and a pair of polarizing element protective films laminated on both sides of the polarizing element, wherein: the polarizing element protecting the crucible of claim 1 is used as At least one of the polarizing element protective films. 35 201042300 Liquid crystal panel VIII, 8, a liquid crystal display element comprising a liquid crystal cell and a pair of polarizing plates laminated on both sides of the cell, characterized in that: the polarizing plate of claim 7 is used as at least one partial polarizing plate Schema. (as in the next page) 36