TW200946570A - Method for producing laminated optical thin film, laminated optical thin film, polarizer and liquid crystal display device - Google Patents

Abstract

The issue of the invention is to provide a laminated optical thin film and its production method and a polarizer using the laminated optical thin film and a liquid crystal display (LCD) device, which can realize a high contrast ratio or low color shift while obliquely watching the screen of the LCD device, thereby forming more uniform display properties and simultaneously providing excellent durability and less reflection of ambient light. The method for producing laminated optical thin film of the invention comprises the following steps: a step of obtaining a raw thin film laminated by the cyclic olefin resin layer and the vinyl aromatic resin layer by drawing cyclic olefin resin and vinyl aromatic resin into a film lamination via the co-extrusion manner, and a step of performing uniaxial tensioning for the produced raw thin film by taking the length direction of the thin film as the perpendicular direction for the tensioning.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated optical film which realizes excellent viewing angle characteristics of a liquid crystal display device, a method for producing the same, and a polarizing plate and a liquid crystal display device using the same. [Prior Art] The phase difference film is generally used as a viewing angle compensation of a liquid crystal display device to prevent light leakage in an oblique viewing angle and prevent contrast reduction. Examples of the optical film used as the retardation film include a polycarbonate film, a polyester film, a cellulose acetate film, and a cyclic olefin film. Among them, the cyclic olefin film is excellent in transparency, heat resistance, dimensional stability, low photoelasticity, and the like, and has been attracting attention as a material for various optical parts such as a retardation film. In recent years, in addition to the conventional TN mode, the high viewing angle liquid crystal mode of the VA mode and the IPS mode has been put into practical use, and liquid crystal display devices (LCD TVs) have been widely used in television applications requiring high image quality. For example, a retardation film for a liquid crystal display device of the VA mode, for example, a compensation method of combining the A plate and the C plate or a compensation method of combining one or two biaxial films is particularly known for the improvement of the viewing angle. However, even with these compensation methods, for the change in color when viewing the screen obliquely (hereinafter referred to as color shift), for example, in the black display state, it should be black, but purple coloring or the like can be seen, and the viewing angle compensation is insufficient. In order to improve this problem, it is necessary to have a characteristic in which the wavelength is shorter in the visible light region, and the phase difference is smaller, the longer the wavelength is, the larger the phase difference is, that is, the retardation film having a reverse wavelength dispersion property. For example, Patent Document 1 proposes a method of realizing reverse wavelength dispersion by reforming a resin used for a retardation film. However, it is difficult to establish the resin production conditions by the modification of the resin, or to impair the strength, transparency, stability, and the like of the film, and it has not reached widespread practical use. In addition to the modification of the resin, for example, a layer having a specific phase difference is laminated, and the total phase difference is controlled so as to have a reverse wavelength dispersion. For example, Patent Document 2 proposes a method of realizing reverse wavelength dispersion by laminating a phase difference layer composed of a polymerizable liquid crystal and a resin film. However, the retardation layer composed of the polymerizable liquid crystal must be controlled within a thickness deviation of several micrometers, etc., and is difficult to manufacture. Further, when the method of lamination is observed from the front direction, the predetermined phase difference 値 and the reverse wavelength dispersion property can be obtained. However, when the oblique direction is observed, the optical axis deviation is affected, and the predetermined phase difference cannot be obtained. Can not compensate for the problem of the oblique view. Other methods of laminating the retardation layer, for example, Patent Document 3 proposes a film formation by a co-extrusion method or a retardation film. However, the adhesion of each layer is poor, and it is necessary to sandwich the adhesive layer between the layers, and the layer configuration and the manufacturing apparatus become complicated. As described above, the method of increasing the contrast of the oblique direction and reducing the color shift is still not fully established, and improvement is required. Further, in addition to the above-described excellent viewing angle characteristics, a liquid crystal display device for a portable device or a portable game machine such as a mobile phone or a portable game machine requires durability which can be used for a long period of time in a severe environment. [Patent Document 1] Japanese Laid-Open Patent Publication No. JP-A-2006-268033 (PATENT DOCUMENT 2) JP-A-2006-268033 (PATENT DOCUMENT 3) JP-A-2004- 1 3 3 3 1 3 (Invention) DISCLOSURE OF THE INVENTION [Problem to be Solved by the Invention] The present invention provides a liquid crystal display device in which a contrast is high when viewing a picture obliquely, or a color shift amount when viewing a picture obliquely is small. It is possible to form a more uniform screen display, and to provide a laminated optical film which is excellent in durability and excellent in external light, a method for producing the same, a polarizing plate and a liquid crystal display device using the same. [Means for Solving the Problem] In view of the above-mentioned situation, the inventors have found that the phase difference and the reverse wavelength dispersion in the oblique direction when the problem is solved in Patent Document 2 can be ensured, and the patent can be secured. The adhesion of each layer of the laminated film which is a problem in Document 3 has been completed. The method for producing a laminated optical film according to the present invention is characterized in that: a cyclic olefin-based resin and a vinyl aromatic resin are laminated by a co-extrusion method to form a cyclic olefin-based resin layer ( Hereinafter, the step (A) layer) is a step of laminating a raw film with a vinyl aromatic resin layer (hereinafter referred to as a (B) layer), and the original film obtained is obtained for the film length. The direction is the orthogonal direction, the step of uniaxial stretching is performed, and a -6 - 200946570 laminated optical film satisfying all the characteristics represented by the following formulas (i) to (iii) is obtained. R450 SR55 0 SR65 0 ...(i ) 1 .0 ^ R65 0/R5 5 0 ^ 1.2 ... ( ϋ ) 7 Onm ^ R5 5 0 ^ 1 5 Onm ... ( iii) [The above formula (i) ~ (iii) Medium, R4 50, R550, and R650 sequentially show the in-plane retardation of the laminated optical film at wavelengths of 450 nm, 550 nm, and 650 nm]. In the method for producing a laminated optical film of the present invention, the cyclic olefin resin is preferably composed of a copolymer having a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2). By. 【化1】

P is an integer formula of 0 or more: -CH2CH2 represents [in the formula (1), 111 is an integer of 1 or more, and 'X is independently a base or a base represented by the formula: -CH = CH-, and (e) is represented by Or the tables R to R4 each independently represent the following (a) to (f) or (g). 200946570 (a) a hydrogen atom, (b) a halogen atom, (c) a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms having a linking group having an oxygen atom, a sulfur atom, a nitrogen atom or a ruthenium atom, (d) a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms, (e) a polar group, (f) an alkylene group in which R1 and R2 are bonded to each other, and R3 and R4 are bonded to each other, and R1 to R4 which are not involved in the aforementioned bonding Respectively independent of each other, it is selected from the above (a) to (e), and (g) represents a single or polycyclic ring in which R1 and R_2, R3 and R4, or R2 and R3 are bonded to each other to form a fragrant ring or a non-aromatic ring. The hydrocarbon ring or the heterocyclic ring, and the Ri~r4 groups which are not involved in the aforementioned bonding are mutually independent and are selected from the above (a) to (e). [Chemical 2]

R7 R6 [In the formula (2), the γ system is represented by the formula: -ch = CH- or a group represented by the formula: -CH2CH2-, and R5 to R8 each independently represent the following (a) to (e). Or indicate (f) or (g). (a) a hydrogen atom, (b) a halogen atom, 8-200946570 (C) a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms having an oxygen atom, a sulfur atom, a nitrogen atom or a ruthenium linking group, (d) a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms, (e) a polar group, (f) a group in which R5 and R6, or R7 and R8 are bonded to each other, and R5 to R8 which are not involved in the aforementioned bonding. Independently from each other, means selected from (a) to (e), and (g) represents a monocyclic or polycyclic hydrocarbon ring of an aromatic ring or a non-aromatic ring formed by R5 and R6, R7 and R8, or R6 and R7. Or a heterocyclic ring which participates in the above-mentioned bonding, R5 to R8 are mutually independent and are selected from the above (a (e).) The method for producing a laminated optical film of the present invention, wherein the vinyl group-based resin is preferably styrene-( The methyl methacrylate copolymer or the aryl-based resin is preferably a styrene-maleic anhydride copolymer. The method for producing a laminated optical film of the present invention, wherein the cyclic olefinic W resin layer and the vinyl aromatic group The resin layer is preferably in direct contact. The method for producing a laminated optical film of the present invention, wherein the cyclic olefin resin and the vinyl aromatic The resin preferably satisfies the following formula (iv): TgA ( °c ) - TgB ( °c ) I ^ 20 ( °c ) ( iv) [wherein, TgA represents a cyclic olefin system Glass conversion of resin, TgB means glass transition temperature of vinyl aromatic resin]. Method for producing laminated optical film of the present invention, wherein glass transition temperature (TgA) of cyclic olefin resin and vinyl aromatic resin The above-mentioned bonding of the sub-alkane, the non-aromatic vinyl hydrocarbon-based closed-temperature hydrocarbon system glass 200946570 glass transition temperature (TgB) is preferably 1 or more (TC or more. The laminated optical film of the present invention, its characteristics are The cyclic olefin-based resin layer is in direct contact with the vinyl aromatic resin layer, and is laminated, and satisfies all the characteristics of the following formulas (i) to (iii). R450 ^ R550 ^ R650 ... ( i ) 1.0 ^ R650/R550 ^ 1.2 ... ( ϋ ) 70nm^R5 5 0 ^ 150nm ( iii ) [In the above formula (〇~(iii), R450, R550, R650 are expressed at the wavelength of 450nm, The in-plane retardation of the laminated optical film of 550 nm and 650 nm]. The laminated optical film of the present invention preferably satisfies the following formula (v) 0 1 .0 ^NZ ^ 3.0 ( v ) [In the above formula (v), NZ is a coefficient expressed by NZ = ( nx - nz ) / ( nx - ny ), and is at a wavelength of 550 nm. Wherein nx represents the maximum refractive index in the plane of the laminated optical film, ny represents the refractive index in the direction perpendicular to nx in the plane of the laminated optical film, and nz represents the lamination orthogonal to nx and ny. The refractive index in the thickness direction of the optical film. However, when the average refractive index of the laminated optical film is Nave, it is represented by Nave = (nx + ny + nz) / 3, and Nave is in the laminated optical film, the cyclic olefin resin layer and the vinyl aromatic resin layer. The respective average refractive indices are weighted and averaged by the thickness ratio]. In the laminated optical film of the present invention, the glass transition temperature of the cyclic olefin resin and the glass transition temperature of the vinyl aromatic resin are preferably -10-200946570 1 10 °c or more. The laminated optical film of the present invention is characterized by the method for producing the above laminated optical film. The polarizing plate of the present invention is characterized in that the laminated optical film of the present invention is laminated on at least one side of a polarizer via an adhesive or an adhesive. The polarizing plate of the present invention preferably contains at least one layer selected from the group consisting of an antireflection layer and an antiglare layer. The liquid crystal display device of the present invention is characterized in that it has the polarizing plate of any of the above-described inventions. [Effects of the Invention] With the laminated optical film of the present invention, it is possible to obtain a contrast of a liquid crystal display device when viewing a picture obliquely, or a color shift amount when viewing a picture obliquely, A liquid crystal display device capable of forming a more uniform picture display. [Best Mode for Carrying Out the Invention] Hereinafter, the present invention will be specifically described. [Manufacturing Method of Laminated Optical Film] The method for producing a laminated optical film of the present invention comprises: laminating a cyclic olefin resin and a vinyl aromatic resin by a co-extrusion method to obtain a film The step of laminating the original film of the cyclic olefin-based resin layer and the vinyl aromatic resin layer with the original film -11 - 200946570 obtained by uniaxial stretching in the direction orthogonal to the longitudinal direction of the film step. Cyclic olefin resin The cyclic olefin resin used in the present invention is not particularly limited, and examples thereof include a ring-opening (co)polymer of a cyclic olefin monomer having a norbornene skeleton and hydrogenation of a ring-opening (co)polymer. A copolymer of a compound, an addition (co)polymer or a cyclic olefin monomer and another monomer having copolymerizability, a hydrogenated product thereof, or the like preferably has a structural unit (1) represented by the above formula (1) and A copolymer of the structural unit (2) represented by the above formula (2). Other structural units may be optionally included as necessary. The copolymer is a monomer represented by the following formula (3) (hereinafter also referred to as "monomer") and a monomer represented by the following formula (4): Also known as "monomer (2)") is obtained by ring-opening copolymerization. [化3]

(3)

(The definitions of m, p, Ri, R2, r3 and R4 in the formula (3) are the same as defined in the formula 1 (1)). 【化4】

-12- 200946570 (in the formula (4), the definitions of R, R, R7 and r8 are the same as defined in the formula (2). In the formulae (1) to (4), Ri to y represent a hydrogen atom; an atom; a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms which may have a linking group containing oxygen, nitrogen, sulfur or hydrazine; Polar base. The foregoing atoms and groups are explained below. The halogen atom has, for example, a fluorine atom, a gas atom, and a desert atom. The hydrocarbon group having 1 to 30 carbon atoms is, for example, an alkyl group such as a methyl group, an ethyl group or a propyl group; a cycloalkyl group such as a cyclopentyl group or a cyclohexyl group; an alkenyl group such as a vinyl group, a pseudopropyl group or a propenyl group; Further, the above substituted or unsubstituted hydrocarbon group may be directly bonded to the ring structure ' or may be bonded to a linkage. The linking group is, for example, a divalent hydrocarbon group having 1 to 10 carbon atoms (for example, -(CH2)m- (wherein, m is an integer of 10 to 10) represents an alkyl group): oxygen, nitrogen, sulfur or hydrazine Linker (for example, carbonyl (-CO-), carbonyloxy (-〇(&lt;:〇)_), sulfo (_s〇2_), ether bond (-〇-) 'thioether bond (-S- ), an imido group (-NH-), a guanamine bond (-NHCO-, -CONH-), a decane bond (-Si(R2) 〇-(in the formula 'R-methyl, ethyl, etc. The base may be a linker containing a plurality of such groups. The polar group is, for example, a hydroxyl group, an alkoxy group having 1 to 10 carbon atoms, an alkoxycarbonyl group, an aryloxycarbonyl group, a cyano group, a decylamino group, or the like. a quinone ring, a triorganomenyloxy group, a triorganosylalkyl group, an amine group, a decyl group, an alkoxycarbenyl group, a sulfonyl group-containing group, a carboxyl group, etc. More specifically, the above alkoxy group The base is, for example, a methoxy group, an ethoxy group or the like; the alkylcarbonyloxy group is, for example, a methoxycarbonyl-13-200946570 group 'ethoxycarbonyl group or the like; and an aryloxycarbonyl group such as a phenoxycarbonyl group 'naphthyloxyss' carbonyl group , alkoxycarbonyl, biphenyloxycarbonyl, etc.; a methyl decyloxy group, a triethyl decyloxy group, or the like; a triorganomethane group having, for example, a trimethylcarbinyl group, a triethyl ethinyl group, or the like; an amine group having, for example, a first-order amine group, and an alkoxy group The mercaptoalkyl group has, for example, a trimethoxycarbylalkyl group, a triethoxycarbylalkyl group, etc. In the present invention, a more specific example of the cyclic olefin-based resin is as shown in the following &lt;1&gt; to &lt;3 &gt; The copolymer represented by &lt;3&gt; is particularly excellent in optical properties because of its excellent thermal stability. <1> Open ring of monomer (1) and monomer (2) Copolymer. &lt;2&gt; A ring-opening copolymer of monomer (1) and monomer (2) and other copolymerizable monomers. &lt;3&gt;&lt;1&gt; and &lt;2&gt; Hydride. &lt;Monomer (1 ) &gt; The structural unit (1) is usually derived from the monomer (1). Specific examples of the monomer (1) are given below, but the present invention is not limited by these specific examples. 1) It can be used in combination of two or more kinds. Tetracycline [4.4 · 0.1 2,5 . 1 7,1 0 ] - 3 - 12 suspected, five-ring [6.5.1 ·13,6.15-pentene, five-ring [7.4·0·12, 5.19'12.〇8'&quot ;]_3_pentadecene, tricyclo[4.4.0.12'5]-3-undecene, 8·methoxycarbonyltetracyclo[4.4.0.12'5.17,1()]-3-dodecene , 8~ethoxycarbonyltetracyclo[4.4.0.12,5.l7'1Q]-3-dodecene, 200946570 8-n-propoxycarbonyltetracyclo[4.4.0.12'5.l7'1Q]-3 -dodecene, 8-isopropoxycarbonyltetracyclo[4·4.0.12'5.17'1()]-3-dodecene, 8-n-butoxycarbonyltetracyclo[4·4.0.12' 5.17'1()]-3-dodecene, 8-phenoxycarbonyltetracyclo[4·4·0.12'5.Γ'1()]-3-12, 8-methyl-8- Methoxycarbonyltetracyclo[4·4.0.12'5.Γ,1()]-3-dodecene 8-methyl-8-ethoxycarbonyltetracyclo[4.4.0.12'5.17'1() ]-3-dodecene © 8 -methyl-8-n-propoxycarbonyltetracyclo[4.4.0.12'5.17'1()]-3-dodecene, 8-methyl-8-isopropyloxy Cyclocarbonyl tetracyclo[4.4.0.12'5.17'1()]-3-dodecene, 8-methyl-8-n-butoxycarbonyltetracyclo[4.4.0.12'5.17'1()]-3- Decadiene, 8-methyl-8-phenoxycarbonyltetracyclo[4.4.0.12'5.17'1()]-3-dodecene, five rings [8·4.0.12'5_19'12·08 ,13]·3-hexadecene, seven-ring [SJ.O.l3,6.;!10'17.;!12,15』2'7』11 '16;^-Eicosene, seven-ring [Β.δ.Ο.Ι4’7·;!11,18”13,16. 3,8·. 12,17]"-di-carbene, 8-ethylenetetracyclo[4.4.0.12'5.17'1()]-3-dodecene, 8-phenyltetracyclo[4.4.0.12, 5.17, 1()]-3-dodecene, 8-methyl-8-phenyltetracyclo[4.4.0.12'5.17'1()]-3-dodecene, 8-fluorotetracyclo[4.4.0.12' 5.17'1()]-3-dodecene, -15- 200946570 8-fluoromethyltetracyclo[4.4.0.12'5.r'1Q]-3-dodecene, 8-difluoromethyltetracyclic [4.4.0.12, 5.17, 1()]-3-dodecene, 8-trifluoromethyltetracyclo[4.4.0.12'5.l7,1G]-3-dodecene, 8-pentafluoroethyl Tetracycline [4·4·0·12'5.Γ'1()]-3-dodecene, 8.8-difluorotetracyclo[4_4.0.12'5.l7,1G]-3-dodecene, 8.9-Difluorotetracyclo[4·4·0.12'5·17'1()]-3-dodecene, 8.8-bis(trifluoromethyl)tetracyclo[4.4.0.12, 5.17'1()] 3-dodecene, 8.9-bis(trifluoromethyl)tetracyclo[4.4.0.12'5.17'1()]-3-dodecene, 8-methyl-8-trifluoromethyltetracyclo[ 4·4.0.12'5·Γ'1()]-3-dodecene, 8.8.9-trifluorotetracyclo[4·4·0.12'5_Γ,1()]-3-dodecene, 8.8 .9-Tris(trifluoromethyl)tetracyclo[4.4.0.12,5.17,1()]-3-dodecene, 8.8.9.9-tetrafluorotetracyclo[4.4.0.12'5.17'1()]- 3 -dodecene, 8,8,9,9-tetrakis(trifluoromethyl)tetracyclo[4 · 4 · 0.1 2 '5 · 17,1 0 ] - 3 -dodecene, 8.8-difluoro-9 , 9-bis(trifluoromethyl)tetracyclo[4·4_0·12, 5.17'10]-3 - twelve dilute, 8.9-difluoro-8,9-bis(trifluoromethyl)tetracyclo[4.4 .0.12,5.17'10]-3-dodecene, 8.8.9-trifluoro-9-trifluoromethyltetracyclo[4·4·0·12,5·17'1()]-3-ten Diene, 8.8.9-trifluoro-9-trifluoromethoxytetracyclo[4.4.0.12'5.17,1()]-3-dodecene, 8.8.9-trifluoro-9-pentafluoropropoxy Base four ring [4.4_0.12,5.l7'1G]-3-ten-16- 200946570 diene, 8-fluoro-8-pentafluoroethyl-9,9-bis(trifluoromethyl)tetracyclic [4·4.0·l2'5·l7'1¢)]-3-dodecene, 8.9-difluoro-8-heptafluoroisopropyl-9-trifluoromethyltetracyclo[4.4.0.12'5.17' 1()]-3-dodecene, 8-chloro-8,9,9-trifluorotetracyclo[4.4.0.12, 5.17,1()]-3-dodecene, 8.9-dichloro-8, 9-bis(trifluoromethyl)tetracyclo[4.4.0.12'5.17'10]-3-dodecene, 8-(2,2,2-trifluoroethoxycarbonyl)tetracyclo[4.4.0i2' 5_l7'1&lt;)]-3-dodecene, 8-methyl-8-(2,2,2-trifluoroethoxycarbonyl)tetracyclo[^Ο.ΐυ.ΐΆ-Β-dodecene Wait. Among these, it is preferred to use a monomer (1) having at least one polar group in the molecule. In other words, in the above formula (3), R1 and R3 are a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms, R2 and R4 are a hydrogen atom or a monovalent organic group, and at least one of R2 and R4 is a hydrogen atom and a hydrocarbon group. The polar group is preferred because it improves adhesion and adhesion to other materials. The content of the polar group in the copolymer is determined by the desired function and the like, and is not particularly limited, and in order to improve adhesion to other materials, in the case of adhesion, a structural unit having a polar group in the entire structural unit (1) (1) It is usually contained in an amount of 50 mol% or more, preferably 70 mol% or more, more preferably 8 mol% or more. The full structural unit (1) may be any one having a polar base. The presence of a polar group enhances the adhesion to the vinyl aromatic resin layer during co-extrusion film formation. -17- 200946570 At least one of R2 and R4 is a formula (5): -(CH2)nCOOR9 (5) [wherein 'n is usually an integer of 0 to 5, preferably an integer of 〇~2, more preferably 0. . R9 is a monovalent organic group]. The monomer (1) representing a polar group is preferred in terms of easy control of the glass transition temperature and water absorbability of the resulting copolymer. In the formula (5), R9 represents a monovalent organic group 'e.g., an alkyl group such as a methyl group, an ethyl group, a propyl group or the like; an aryl group such as a phenyl group, a naphthyl group, an anthracenyl group or a biphenyl group; An aromatic ring such as a phenyl fluorene or a tetrahydroanthracene, or a monovalent group of a heterocyclic ring such as an anthracene ring or a quinone ring. Further, in the formula (5), η is usually an integer of 0 to 5 as described above, and the smaller the η is, the higher the glass transition temperature of the copolymer obtained is, and therefore, particularly, a monomer having η of 0 is preferable. (1) It is preferred in terms of ease of synthesis. In the above formula (3), when the carbon atom bonded to the polar group represented by the formula (5) is bonded to the alkyl group, the balance between the heat resistance and the water absorbing property of the obtained copolymer can be obtained, which is preferable. The carbon number of the alkyl group is preferably from 1 to 5, more preferably from 1 to 2, particularly preferably 1. Further, in the formula (3), the monomer (1) wherein m is 1, and ρ is ruthenium is preferable because a copolymer having a high glass transition temperature is obtained. In the specific example of the above monomer (1), in particular, 8-methyl-8-methoxycarbonyltetracyclo[4.4.0.12, 5.17'1()]-3-dodecene can increase the copolymer obtained. The glass transition temperature is hardly affected by the deformation caused by water absorption, and the water absorbing property can be maintained. The adhesion to other materials is good and the adhesion is good -18-200946570, which is preferable. &lt;Monomer (2) &gt; The structural unit (2) is a specific example of the monomer. However, the present invention is not limited to 2) and two or more types may be used in combination. Bicyclo[2.2.1]hept-2-ene (norbornium 5-methylbicyclo[2.2.1]hept-2-ene, 5-ethylbicyclo[2.2.1]hept-2-ene, 5-methoxy Carbonylbicyclo[2.2.1]hept-2-5-methyl-5-methoxycarbonyl-bicyclo[:5-phenoxycarbonylbicyclo[2.2.1]hept-2-5-methyl-5-phenoxy Carbonylbicyclo[2 5-cyanobicyclo[2.2.1]hept-2-ene, 5-ethylenebicyclo[2.2.1]hept-2-ene-5-phenylbicyclo[2.2.1]hept-2 -ene, 5-(2-naphthyl)bicyclo[2.2.1]heptanyl] 5-fluorobicyclo[2.2.1]hept-2-ene, 5-fluoromethylbicyclo[2.2.1]hept-2- Alkene 5-trifluoromethylbicyclo[2.2.1]hept-2-5-pentafluoroethylbicyclo[2.2.1]hept-2-5.5-difluorobicyclo[2.2.1]hept-2-ene 5.6- Difluorobicyclo[2.2.1]hept-2-ene (2). The following are listed monomers (2 these specific examples. Also, monomer (alkenyl), alkene, 2.2.1] hept-2-ene, alkene, .2.1] hept-2-ene, _2-ene (α, β two Allylene, ene, -19- 200946570 5.5-bis(trifluoromethyl)bicyclo[2.2.1]hept-2-ene, 5.6-bis(trifluoromethyl)bicyclo[2 _2_1]heptan-2- Alkene, 5-methyl-5-trifluoromethylbicyclo[2.2.1]hept-2-ene] 5.5.6-trifluorobicyclo[2.2.1]hept-2-ene, 5,5,6-three (fluoromethyl)bicyclo[2.2.1]hept-2-ene, 5.5.6.6-tetrafluorobicyclo[2.2.1]hept-2-ene, 5.5.6.6-tetrakis(trifluoromethyl)bicyclo[2.2. 1]hept-2-ene,

5.5-Difluoro-6,6-bis(trifluoromethyl)bicyclo[2.2.1]hept-2-ene, 5.6-difluoro-5,6-bis(trifluoromethyl)bicyclo[2.2.1] Hept-2-ene, 5.5.6-trifluoro-5-trifluoromethylbicyclo[2.2.1]hept-2-ene, 5-fluoro-5-pentafluoroethyl-6,6-bis(trifluoro Methyl)bicyclo[2.2.1]hept-2-ene, 5.6-difluoro-5-heptafluoro-isopropyl-6-trifluoromethylbicyclo[2.2.1]hept-2-ene, 5-chloro -5,6,6-trifluorobicyclo[2.2.1]hept-2-ene,

5.6-Dichloro-5,6-bis(trifluoromethyl)bicyclo[2.2.1]hept-2-ene, 5.5.6-trifluoro-6-trifluoromethoxybicyclo[2.2.1]heptane- 2-ene, 5.5.6-trifluoro-6-heptafluoropropoxybicyclo[2.2.1]hept-2-ene, 5-(4-phenylphenyl)bicyclo[2.2.1]hept-2- Alkene, 4-(bicyclo[2.2.1]hept-5-en-2-yl)phenylsulfonylbenzene, tricyclo[5.2.1 ·02,6]-8-nonene, tricyclo[4.3. 0.12'5] indole-3,7-diene (dicyclopentadiene) and the like. Among these, R5 to R8 in the formula (4) are all hydrogen atoms or one of them is a hydrocarbon group having 1 to 30 carbon atoms, and the other monomer is a hydrogen atom. (2) Optically produced by the improvement of -20-200946570 It is preferable that the effect of the toughness of the film is large, and in particular, R5 to R8 are each a hydrogen atom, or one of them is a methyl group, an ethyl group or a phenyl group, and the other monomer is a hydrogen atom, from the viewpoint of heat resistance. Preferably. From the viewpoint of ease of synthesis, improvement of resin toughness, adjustment of glass transition temperature, good co-extrusion, and securing formability, bicyclo [2.2.1] hept-2-ene (norbornene) is preferred. 5-phenylbicyclo[2.2.1]hept-2-ene, tricyclo[4.3.0.12'5]-indole-3,7-diene (dicyclopentadiene). In the present invention, the ratio of the use of the monomer (1) to the monomer (2) is usually in the weight ratio of the monomer (1): monomer (2) = 95: 5 to 5: 95, preferably 95: 5 ~ 60:40, more preferably 95:5 to 70:30, more preferably 95:5 to 75:25. When the ratio of the monomer (1) is more than the above range, the effect of improving the inertness may not be expected. Conversely, when the ratio of the monomer (1) is less than the above range, the glass transition temperature is lowered, and heat resistance may occur. problem. Further, in order to improve adhesion to other materials and adhesion, in the total amount of the structural unit (1) and the structural unit (2), the structural unit having a polar group usually contains 50 to 95% by mole, preferably 70 to 95 mol%, more preferably 80 to 95 mol% or more. When the film is formed by co-extrusion due to the presence of a polar group, the adhesion to the vinyl aromatic resin layer can be improved. &lt;Other copolymerizable monomers&gt; Other copolymerizable monomers copolymerizable with the monomer (1) and the monomer (2), for example, cyclobutene, cyclopentene, cycloheptene, cyclooctene, and tri Ring [5.2.1.02 = 61-3-decene and other cyclic olefins. The carbon number of the cycloolefin is preferably from 4 to 20, more preferably from 5 to 12. Further, these copolymerizable monomers can be used for improving phase difference expression, -21 - 200946570 T g adjustment, moldability improvement, and the like, and resin modification. Further, in the main chain of polybutadiene, polyisoprene, styrene-butadiene copolymer, ethylene-nonconjugated diene copolymer, norbornene derivative, etc., an olefin unsaturated bond may be contained. The monomer (1) and the monomer (2) are polymerized in the presence of an unsaturated hydrocarbon polymer or the like. In this case, the obtained copolymer can be used as a raw material of a resin having high impact resistance. The ratio of the use of the monomer (1) and the monomer (2) to the copolymerizable cyclic monomer or the compound containing an unsaturated double bond is [monomeric (1) + monomer (2 ) ] : [ © copolymerization ring The monomer or the compound containing an unsaturated double bond is preferably 100:0 to 50:50', more preferably 100:0 to 60:40, and particularly preferably 100:0 to 7 0:3 0. &lt; Ring-opening polymerization catalyst&gt; The ring-opening polymerization reaction of a specific monomer is carried out in the presence of a metathesis catalyst. The metathesis catalyst is selected from at least one metal compound of a tungsten compound, a molybdenum compound, and a cerium compound (hereinafter referred to as "(a 〇) component)")" and a lanthanide element selected from the periodic table (for example, Li, Na, K, etc.) ), lanthanum elements (such as Mg, Ca, etc.), group IIB elements (such as Zn, Cd, Hg, etc.), lanthanum elements (such as b, A1, etc.), group IVB elements (such as Ti, Zr, etc.) or IVA Element (eg Si,

a compound of Sn, Pb, or the like] and selected from the group consisting of at least one of the bond of the element and the bond of the element and hydrogen (hereinafter referred to as "(b) component") 'In order to increase the activity of the catalyst, an additive (hereinafter referred to as "(c) component") may be further contained. -22-200946570 A specific example of the preferred metal compound constituting the above-mentioned component (a) is a metal compound described in JP-A No. 1-20405-17, which is a composition of the above-mentioned Japanese Patent Publication No. Hei. Specific examples of the compound constituting the above component (b) include N_C4H9Li, (C2H5)3A1'(C2H5)i5AICl1.5' (C2H5)i5AICI1.5' (C2H5)A1C12, methylaluminoxane, LiH, etc. The compound described in JP-A-240517. ❹ For the above component (c), for example, an alcohol, an aldehyde, a ketone, an amine or the like can be used, and a compound represented by JP-A-1-240517 can also be used. Further, as the metathesis catalyst other than the above components (a), (b) and (c), a known nail compound which is a catalyst of G r a v e s 's can be used. &lt;Hydrogenation&gt; The hydrogenation ratio of the hydrogenated (co)polymer represented by the above &lt;3 &gt; is usually 50% or more, preferably 70% or more, more preferably 90% or more, still more preferably 97% or more. , especially good for more than 99%. The cyclic olefin resin used in the present invention has an intrinsic viscosity [ηίη1] measured in chloroform at 30 ° C of preferably 0.2 to 5.0 dl / g. Further, the average molecular weight of the cyclic olefin resin is preferably 8,000 to 100,000 in terms of polystyrene conversion by gel permeation chromatography (GPC), and the weight average molecular weight (Mw) is preferred. It is a range of 20,000 to 3 00,000. The glass transition temperature (TgA) of the cyclic olefin-based resin is preferably from 100 to 250 ° C, more preferably from 10 10 to 180 ° C, in order to ensure heat stability and co-extrudability. 120~170 °C. The cyclic olefin resin film used in the present invention is formed of a resin composition containing the above cyclic olefin resin. In the resin composition, in addition to the cyclic olefin resin, an antioxidant, a heat stabilizer, a light stabilizer, a phase difference adjuster, an ultraviolet absorber, and an antistatic agent may be added as needed within a range that does not impair the effects of the invention. Agent, dispersant, processability enhancer, chlorine scavenger, flame retardant, crystallization nucleating agent, anti-adhesion agent, anti-fogging agent, mold release agent, pigment, organic or inorganic © 塡 filling material, neutralizer A known additive such as a slip agent, a decomposing agent, a metal inert agent, a contamination preventing material, an antibacterial agent or other resin, a thermoplastic elastomer or the like. Vinyl aromatic resin The vinyl aromatic resin used in the present invention preferably has a structural unit (6) represented by the following formula (6). 【化5】

In the formula (6), R1G represents a hydrogen atom or a methyl group. R11 to R13 each independently represent a hydrogen atom; a halogen atom; and a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms; a polar group] containing a linking group of oxygen, nitrogen, sulfur or hydrazine. -24- 200946570 Specific examples of the monomer of the derivatized structural unit (6) are styrene, α-methylstyrene, ρ-methylstyrene, fluorene-methylstyrene, ρ-trifluoromethylstyrene, Ρ-methoxystyrene, hydrazine-hydroxystyrene, fluorene-chlorostyrene, fluorene-nitrostyrene, fluorene-aminostyrene, fluorene-carboxystyrene, fluorene-phenylstyrene, p-tert Butoxy styrene, 2,4,6-trimethylstyrene, and the like. These monomers may be used singly or in combination of two or more. Among these monomers, styrene, ?-methylstyrene, and p-hydroxystyrene are preferably used singly or in combination. The vinyl aromatic resin is preferably a structural unit (7) represented by the following formula (7) and/or a structural unit (8) represented by the following formula (8). 【化6】

[In the formula (7), an X-based oxygen atom or a nitrogen atom having a substituent. In the formula (8), R1 5 is a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms. The hydrocarbon group having 1 to 30 carbon atoms is, for example, an alkyl group such as a methyl group, an ethyl group or a propyl group; a cycloalkyl group such as a cyclopentyl group or a cyclohexyl group; an alkenyl group such as a vinyl group, an allyl group or a propylene group. R14 represents a hydrogen atom or a methyl group]. The vinyl aromatic resin may have a structure including both the structural unit (7) and the structural unit (8), or may have a structure including one of the structural unit (7) and the structural unit (8). Further, the acid anhydride structure of the structural unit (7) or the quinone imine structure can be hydrolyzed to form a dicarboxylic acid structure or a proline structure. The specific example of the monomer of the structural unit (7) is maleic anhydride-25- 200946570, N-substituted maleimide, maleic acid and its derivatives, fumaric acid and the like, maleimide, anthracene phenyl maleimide, etc. Its derivatives and so on. These monomers may be used singly or in combination of two or more types. Among these monomers, maleic anhydride and N-phenyl maleimide are preferably used from the viewpoint of heat resistance and adhesion to the cyclic olefin resin layer. Specific examples of the monomer of the derivatized structural unit (8) include alkyl (meth)acrylate such as (meth)acrylic acid and methyl (meth)acrylate, and decylamine (meth)acrylate. These monomers may be used singly or in combination of two or more types. Among these monomers, (meth)acrylic acid or methyl (meth)acrylate is preferably used from the viewpoint of heat resistance and adhesion to the cyclic olefin-based resin layer. In the present invention, the ratio of the structural unit (6) to the structural unit (7) and/or the structural unit (8) in the vinyl aromatic resin is usually expressed by a weight ratio, and the structural unit (6): [structure Unit (7) + structural unit (8)] = 1 〇〇: 〇 ~ 50: 50, preferably 98: 2 to 60: 40, more preferably 95: 5 to 70: 30. When the use ratio is in the above range, the glass transition temperature can be adjusted, the phase difference expression property can be adjusted, the co-extrusion moldability can be ensured, and the adhesion to the cyclic olefin-based resin layer can be ensured. In addition to the structural unit (7) and the structural unit (8), if necessary, ethylene, propylene, butene, butadiene, isoprene, (meth)acrylonitrile, α-chloroacrylonitrile, vinyl acetate may be contained. Other monomers such as chlorinated ethylene are also used as a copolymerization component. The logarithmic viscosity (η) measured by the vinyl aromatic resin used in the present invention in a chlorobenzene-26-200946570 solution (concentration 〇 5 g/dL) at 30 ° C is preferably 0.1 to 3.0 dL/g. Further, the weight average molecular weight Mw in terms of polystyrene measured by a gel permeation chromatography (GPC) is usually 30,000 to 1,000,000, preferably 40,000 to 800,000 &gt; more preferably 50,000 to 500,000 °. In some cases, the strength of the molded article such as the obtained film is lowered. When the molecular weight is too large, the viscosity of the solution is too high, and the productivity and workability of the resin composition of the present invention are sometimes deteriorated. The molecular weight distribution (Mw/Mn) of the vinyl aromatic resin is usually 1.0 to 10, preferably 1.2 to 5.0, more preferably 1.2 to 4.0. The vinyl aromatic resin used in the present invention preferably has a polymerization reaction in the presence of a suitable polymerization initiator in the presence of the above-mentioned monomer of the derivatized structural units (6), (7) and (8). To manufacture. As the polymerization initiator, for example, a radical polymerization initiator, an anionic polymerization catalyst, a coordination polymerization catalyst, a cationic polymerization catalyst or the like is used, and a radical polymerization initiator is particularly preferably used. ® The radical initiator used in the polymerization may be a known organic peroxide or an azo radical polymerization initiator which generates a radical. A polyfunctional initiator or an initiator which easily causes a dehydrogenation reaction may lower the linearity of the obtained styrene copolymer, which is not preferable. The organic peroxides are, for example, diethyl hydrazine peroxide, diphenyl hydrazine peroxide, diisobutyl hydrazine peroxide, bis(2,4-dichlorophenylhydrazine) peroxide, and two (3, 5, 5-trimethylhexyl) peroxide, dioctyl peroxide, dilaurin peroxide, distearyl peroxide, bis(4-(m-toluene)phenylhydrazine) peroxide Dialkyl decyl peroxides; -27- 200946570 ketones such as methyl ethyl ketone peroxide, cyclohexanone peroxide, methyl cyclohexanone peroxide, acetamidine acetone peroxide Peroxides; hydrogen peroxide, t-butyl hydroperoxide, CX-cumene hydroperoxide, P-decane hydrogen peroxide, diisopropylbenzene hydroperoxide, 1,1,3,3 - hydrogen peroxide such as tetramethylbutyl hydroperoxide or t-hexyl hydroperoxide; di-t-butyl peroxide, dicumyl peroxide, dilauryl peroxide, α , α'-bis(t-butylperoxy)diisopropylbenzene, 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane, t-butyl cumene Base peroxide, 1,2,5-dimethyl-2,5-bis(t-butylperoxy)hexan-3, etc. Base peroxides; t-butyl peroxyacetate, t-butyl peroxytrimethyl acetate, t-hexane trimethyl acetate, 1,1,3,3- Tetramethylbutylperoxide 2-ethylhexanoate, 2,5-dimethyl-2,5-bis(2-ethylhexyl peroxy) hexane, 1-cyclohexyl-1-methyl Ethyl peroxy 2-ethylhexanoate, t-hexylperoxide 2-ethylhexanoate, t-butyl peroxy 2-ethylhexanoate, t-butyl peroxyisobutyrate, T-butyl peroxy maleate, t-butyl hydrazine, 3,5,5-trimethylhexanoate, t-butylperoxylaurate, 2,5-dimethyl -2,5-bis (m-toluene peroxidation) hexane, α,α'-bis(new ruthenium peroxy)diisopropylbenzene, cumyl peroxy neodecanoate, 1,1 , 3,3-tetramethylbutyl peroxy neodecanoate, 1-cyclohexyl-1-methylethyl peroxy neodecanoate, t-hexyl peroxy neodecanoate, t-butyl Oxidized neodecanoate, t-butyl peroxybenzoate, t-hexylperoxybenzoate, bis(t-butylperoxy)isophthalate, 2,5-dimethyl -2,5-bis(benzoquinone peroxide) Hexane, t-butylperoxide m-tolylsulfonylbenzene-28- 200946570 formate, 3,3',4,4'-tetrakis (t-butylperoxycarbonyl)benzophenone Oxidized esters; 1,1-bis(p-hexylperoxy)3,3,5-trimethylcyclohexane, 1,1-bis(t-hexylperoxy)cyclohexane, 1,1-double ( T-butyl peroxy) 3,3,5-trimethylcyclohexane, 1,1 bis (dibutyl peroxy) cyclohexane, 1,1 bis (t-butyl peroxy) ring twelve Alkane, 2,2-bis(t-butylperoxy)butane, η-butyl 4,4-bis(t-butylperoxy)trimethylacetate, 2,2-® double (4 Peroxy ketal such as 4-di-t-butylperoxycyclohexyl)propane, t-hexylperoxyisopropyl monocarbonate, t-butylperoxyisopropyl monocarbonate, t-butyl a peroxymonocarbonate such as 2-ethylhexyl monocarbonate or t-butyl peroxyallyl monocarbonate; di-sec-butyl peroxydicarbonate, di-n-propyl Base peroxydicarbonate, diisopropyl peroxydicarbonate, bis(4-t-butylcyclohexyl)peroxydicarbonate, di-2-ethoxyethyl peroxydicarbonate, 2-ethylhexylperoxydicarbonate, di-2-methoxybutylperoxydicarbonate, bis(3-methyl-3-methoxybutyl)peroxydicarbonate Oxidized dicarbonate; other examples thereof include t-butyltrimethylformamidine peroxide, and the like, but the organic peroxide which can be used in the present invention is not limited to the compounds exemplified by the above-mentioned azo-based radical polymerization. The initiators are, for example, azobisisobutyronitrile, azobisisovaleronitrile, 2,2'-azobis(4-methoxy-2,4.dimethyl pentanenitrile), 2,2'-even Nitrogen bis(2,4-dimethylvaleronitrile), 2,2'-azobis(2-methylbuty-29-200946570 nitrile), 1,1'-azobis(cyclohexane-1- Nitrile), 2-(aminomethionine azo)isobutyronitrile, 2,2'-azobis[2-methyl-&gt;^-{1,1-bis(hydroxymethyl)-2-hydroxyl Ethyl}propanamine], 2,2'-azobis[2-methyl-N-{2-(1-hydroxybutyl)}propanamide], 2,2'-azobis[2 -methyl-N-(2-hydroxyethyl)propanamide], 2,2'-azobis[N-(2-propyl)-2-methylpropanamide], 2,2'- Azobis(N-butyl-2-methylpropanamide), 2,2'-azo double N-cyclohexyl-2-methylpropanamide), 2,2'-azobis[2-(5-methyl-2-imidazolin-2-yl)propane]dihydrochloride, 2,2 '-Azobis[2_Q(2-imidazolin-2-yl)propane]dihydrochloride, 2,2'-azobis[2-(2-imidazolin-2-yl)propane]disulfate Salt·dihydrate, 2,2'-azobis[2-(3,4,5,6-tetrahydropyrimidin-2-yl)propane]dihydrochloride, 2,2'-azobis[ 2-{1-(2-hydroxyethyl)-2-imidazolin-2-yl}propane]dihydrochloride, 2,2'-azobis[2-(2-imidazolin-2-yl) Propane], 2,2'-azobis(2-methyldiethylmethanone) dihydrochloride, 2,2'-azobis[N-(2-carboxyethyl)-2-methyl Base-diethyl ketone oxime], 2,2'-azobis(2-methyldiethyl ketone oxime), dimethyl 2,2'-oxime azobisbutyrate, 4, 4,-azobis(4-cyano-n-pentanoic acid), 2,2'-azobis(2,4,4-trimethylpentane), etc., but the azo radical polymerization used in the present invention The initiator is not limited to the compounds exemplified herein. These radical initiators are used in an amount of 100 mol% based on the total amount of monomers derived from the vinyl aromatic resin, usually 0.01 to 5 mol%, preferably 0.03 to 3 mol%, more preferably For 〇.〇5~2 mol%. Further, in the copolymerization reaction of the monomer from which the vinyl aromatic resin is derived, a catalyst can be used. The catalyst is not particularly limited, and examples thereof include a conventional -30-200946570 anionic polymerization catalyst, a coordination anionic polymerization catalyst, a cationic polymerization catalyst, and the like. The copolymerization reaction of the monomer from which the vinyl aromatic resin is derived is carried out in the presence of the above polymerization initiator or catalyst by a bulk polymerization method, a solution polymerization method, a precipitation polymerization method, an emulsion polymerization method, or a suspension polymerization. Conventional methods such as a method or a bulk-suspension polymerization method are carried out by copolymerization. The solvent to be used in the solution polymerization is not particularly limited as long as it can dissolve the monomer and the polymer, and is preferably a hydrocarbon solvent such as cyclohexanone or an aromatic hydrocarbon solvent such as toluene or methyl b. A ketone solvent such as a ketone. The amount of the solvent to be used is preferably from 0 to 3 times by weight based on the total amount of the above monomers. The polymerization reaction time is usually from 1 to 30 hours, preferably from 3 to 20 hours. The polymerization temperature is not particularly limited depending on the type of the radical initiator to be used, and is usually from 40 to 180 ° C, preferably from 40 to 180 ° C. 50~120 °C. The glass transition temperature (TgB) of the vinyl aromatic resin is preferably from 10 to 200 ° C, more preferably from 120 to 170 ° C, in order to ensure thermal stability and co-extrusion moldability. The vinyl aromatic resin film used in the present invention can be formed of a resin composition containing a vinyl aromatic resin as described above. In the resin composition, in addition to the vinyl aromatic resin, an antioxidant, a heat stabilizer, a light stabilizer, a phase difference adjuster, an ultraviolet absorber, and an anti-antioxidant may be added as needed within a range that does not impair the effects of the invention. Electrostatic agent, dispersant' Processability enhancer, chlorine scavenger, flame retardant, crystallization nucleating agent, anti-adhesion agent, anti-fogging agent, mold release agent, pigment, organic or inorganic filler, neutralizer 'Slip agent, decomposer, metal inert agent, pollution prevention material-31 - 200946570 A well-known additive such as a material, an antibacterial agent or other resin, a thermoplastic elastomer or the like. Further, a commercially available resin such as Dilark D3 3 2, Dilark D232 manufactured by Nover Chemicals Co., Ltd., RYU REXA14 manufactured by Dainippon Ink Chemicals Co., Ltd., RYU REXA15, PN-177 manufactured by CHI MEI, or the like can also be used as the vinyl aromatic resin of the present invention. Step of obtaining the original film © A method of obtaining an original film in which a cyclic olefin-based resin layer (layer A) and a vinyl aromatic resin layer (layer B) are laminated is formed by co-extrusion lamination. Specifically, there are, for example, a co-extrusion T-die method, a co-extrusion blow molding method, a co-extrusion lamination method, and the like. The present invention preferably uses a laminated optical film composed of two layers of the A layer/B layer, and a layer of the A layer/B layer/A layer from the viewpoints of manufacturing efficiency, strength assurance, optical characteristics, and phase difference control. A laminated optical film comprising a laminated optical film and three layers of a B layer/A layer/B layer. The laminated optical film composed of the two layers is more excellent in optical characteristics (transparency and transparency) and phase difference control, and the laminated optical film composed of three layers is excellent in mechanical strength in preventing warpage of the film. The extrusion temperature of the co-extrusion method is appropriately selected by the melt viscosity of the resin suitable for extrusion film formation, wherein the A layer and the B layer are preferably 200 to 350. (:, more preferably 230 to 300 ° C, more preferably 240 to 280 ° C. The temperature difference between the extrusion temperature of the A layer and the extrusion temperature of the B layer is when the two resins are in the T mold or the feed block ( In the case of contact in the feed block), the case where the melt viscosity is not excessively changed due to temperature change, and the formability is deteriorated is preferably within 5 01, more preferably -32 to 200946570 within 30 ° C, more preferably 20 ° C. The difference in the melt viscosity of the resin constituting the layer A and the layer B is preferably within 5 times, more preferably within 3 times, more preferably within 2 times, in order to ensure formability, particularly the uniformity of the thickness of each layer. Since the cyclic olefin resin and the vinyl aromatic resin used in the present invention are excellent in adhesion to each other, it is not necessary to provide an adhesive layer or an adhesive layer between the film layers, or to perform corona treatment, plasma treatment, or primer. It is easy to handle the treatment, etc. By the hot-melting of the co-extrusion, sufficient adhesion strength can be obtained in the state of direct contact between the layer A and the layer B. Further, even after the stretching treatment, the layer A The adhesion to the layer B is also kept good. The original film obtained is preferably in the width direction, The thickness in the direction is uniform. The thickness deviation causes the phase difference of the obtained laminated optical film to be deviated, which affects the display uniformity when assembled in the liquid crystal display device. Therefore, the mold line is caused by the thickness variation (cause It is preferable that the length of the line caused by the injury of the T lip, the cross mark (the periodic thickness variation in the length direction of the length), and the like, and the point defects such as the measurement point or the light leakage. It is also preferable to display a poor gel, foreign matter, etc. These can be optimized by, for example, using an extruder having a polymer filter, the residence time of the molten resin, reducing the pulsation of the gear pump, and the T-die lip. The honing or surface treatment, the transfer roller, the smoothing of the peeling roller, the surface treatment, etc. are suppressed. The thickness distribution of each layer of the original film is preferably within ± 1 〇%, more preferably within ± 5%, particularly preferably ± Stretching step -33- 200946570 The laminated optical film of the present invention having the function of a retardation film is produced by subjecting the above-mentioned original film to a stretching treatment. The laminated optical film is stretched. The method can be preferably carried out by using a conventionally known method for uniaxial stretching in the direction orthogonal to the longitudinal direction of the film, that is, in the width direction. Specifically, a method of uniaxially stretching in the width direction by using a tenter is preferred. In the stretching step of the manufacturing method of the present invention, the stretching temperature is based on the Tg (TgA) of the cyclic olefin resin and the vinyl aromatic resin. Tg 0 (TgB) is determined, which is ideal for adjusting the phase difference. Specifically, at (the lower of TgA and TgB) -10 ( ° C ) ~ (the higher of TgA and TgB値) +3 0 ( ° C) range, preferably (値 of the lower of Tg A and TgB) -5 ( ° C ) ~ (the higher of TgA and TgB) +20 ( °C The scope of). Further, the relationship between TgA and TgB is preferably in the following formula (iv). TgA-TgB | ^ 20 ( °C ) ( iv ) The above formula (iv) is preferably I TgA-TgB| S15 (°C), ❹ more preferably I TgA-TgB| S12 (° C) 'Specially for I TgA-TgB| Sl〇(t:). By controlling the stretching temperature, TgA and TgB within the above range, the phase difference between the A layer and the B layer can be controlled by stretching, and the purpose of the purpose of laminating the optical film can be easily obtained (formula (i), formula (() ϋ ), the characteristics expressed by the formula (iH) and the formula (v), etc.). Thereby, it is possible to realize a liquid crystal display device in which the color shift is small when the picture is viewed obliquely. Further, a laminated optical film excellent in durability at a high temperature can be obtained. -34- 200946570

It is preferable that both TgA and TgB are 110 ° C or more, and more preferably 110 to 200 ° C, particularly preferably 120 to 170 ° C in order to ensure thermal stability and stretch workability. 制造 The manufacturing method of the present invention is a stretching ratio It is usually 1.1 to 10 times, preferably 1.2 to 7 times, more preferably 1.3 times to 5 times. In particular, the transverse uniaxial stretching of the uniaxial stretching is carried out in the direction in which the film length direction is orthogonal, and the drawing is preferably 1.3 to 5 times. By transverse uniaxial stretching, the optical axis of the laminated optical film of the present invention (the maximum refractive index direction in the plane) becomes orthogonal to the longitudinal direction of the film, so that the laminated optical film and the polarizer can be roll-to-roll Then, the productivity is improved. When the stretching ratio is in the above range, the optical axis, the phase difference 値, the NZ coefficient, or the distribution in the film plane of the retardation film can be appropriately controlled, and the contrast can be high, and the color shift when viewing the image obliquely is comparative. A liquid crystal display device that is small and can be displayed on a uniform screen. [Laminated optical film] ❹ W The laminated optical film of the present invention is obtained by directly contacting the layer A and the layer B. In the method of laminating the A layer and the B layer, in addition to the coextrusion method described above, a known method of forming a film layer such as dry lamination or a coating forming method of coating a resin solution on a base resin film can be used. The method is preferably a co-extrusion method from the viewpoint of manufacturing efficiency and the like. The length of the laminated optical film in the longitudinal direction is preferably 50 m or more, and more preferably 10 μm or more. Such long films are usually used in the form of a film cylinder. Further, the width of the film is preferably 1 000 mm or more, more preferably 1 500 mm or more, and particularly preferably 2000 mm or more. -35- 200946570 The laminated optical film of the present invention is not particularly limited, and the thickness of the film is usually from 10 to 400 μm, preferably from 20 to 30,000 μm, from the viewpoint of usability or adjustment of optical axis and phase difference ,, particularly preferably 20~200μιη. Further, when the variation in thickness is small, the variation in phase difference 値 is reduced, and uniformity in display quality can be obtained, which is preferable. The thickness deviation of the laminated optical film is within an average 値 ± 10%, preferably within an average 値 ± 5 %, and more preferably within an average 値 ± 2%. The laminated optical film of the present invention may be an unstretched film or a stretched film, and in order to satisfy the properties described in the formula (i) to (iii) and preferably satisfy the formula (ν), it is preferably Stretched film. The laminated optical film of the present invention is particularly preferably formed by the method for producing a laminated optical film of the present invention. Optical Properties of Laminated Optical Films The laminated optical film of the present invention is characterized in that the phase difference of the laminated optical film satisfies all the characteristics of the following formulas (i) to (iii). ❹ R450 ^ R550 ^ R650 ... ( i ) 1.0SR650/R550 S 1.2 ...(ii ) 7 0nm ^ R5 5 0 ^ 1 5 Onm ... ( iii) [In the above formula (i) to (iii), R450, R5 50, and R650 sequentially show the in-plane retardation of the laminated optical film at a wavelength of 450 nm and 550 nm '650 nm. The above (i) and (ii) show the wavelength dispersion of the phase difference, and the above (i) shows that the longer the in-plane phase difference, the larger the in-plane phase difference, that is, the -36-200946570 reverse wavelength dispersion property. This is to prevent the polarization state of light passing through the laminated optical film from varying depending on the wavelength, and to reduce the characteristics required for the color shift amount when viewing the image obliquely. The enthalpy of the above (ii) indicates the degree of reverse wavelength dispersion. In order to reduce the color shift amount 'for good viewing angle compensation, the larger the better, the better, preferably 1.01 to 1.18, more preferably 1.02 to 1.18. The above (iii) indicates the amount of phase difference in the in-plane of the film. The phase difference film for the VA mode liquid crystal display device can be compensated by combining the A plate and the C plate. In this case, the in-plane phase difference of the function of the A plate is in the range indicated by (in), preferably 75 nm. ~145nm, more preferably 75nm~140nm. A good contrast can be obtained by satisfying the above (iii), and satisfying the above (i) and (Π) can reduce the color shift, and the contrast in the oblique direction can be further improved. In order to obtain the uniformity of display quality, the deviation of the phase difference caused by the place in the width direction and the length direction of the film is preferably as small as possible. The range of the deviation of R6 5 0/R5 50 of the above (ii) is preferably ±〇, 〇4 or less, more preferably ±0.03 or less, and particularly preferably ±0.02 or less. The range of the deviation of R550 of the above (iii) is preferably within ±7 nm, more preferably within ±5 nm, and particularly preferably within 3 nm. Similarly, in order to obtain the uniformity of the display quality, the variation of the optical axis due to the place is preferably as small as possible, and when the film width direction orthogonal to the longitudinal direction of the film is the reference, it is preferably within ±2°, more preferably It is within ±Γ, more preferably within ±0.7°, and particularly preferably ±0.5. Within. The laminated optical film of the present invention preferably satisfies the following formula (ν) -37-200946570 1 .0 ^NZ ^ 3.0 (V) [In the above formula (v), NZ is NZ=( Nx-nz) /(nx-ny) represents the coefficient 'at a wavelength of 550 nm, where nx represents the maximum refractive index in the plane of the laminated optical film, and ny is expressed in the plane of the laminated optical film, and nx is positive The refractive index in the direction of intersection, nz represents the refractive index in the thickness direction of the laminated optical film orthogonal to nx and ny, but when the average refractive index of the laminated optical film is Nave, 'Nave=(nx + ny + nz) /3 indicates that Nave is in the laminated optical film, and the average refractive index of each of the A layer and the B layer is weighted and averaged by the thickness ratio]. The above (v) is called the number 値 of the NZ coefficient, and indicates the balance of the phase difference between the in-plane phase difference and the thickness direction of the laminated optical film. When calculating the NZ coefficient, the in-plane phase difference and the oblique phase difference of the laminated optical film (usually the 値 when incident at a polar angle of 40° in a state where the slow axis is inclined) are measured, and the total thickness of the film and the average refractive index of the film are used. The rate is calculated by the number 得到 to obtain nx, ny, nz, and then NZ = (nx - nz) / (nx - ny). However, in the case of the laminated optical film of the present invention, since the average refractive index of the A layer and the B layer is different, it is not possible to directly measure Nave. Therefore, in the present invention, the average refractive index Nave of the laminated optical film is optimized, and the average refractive index of each of the A layer and the B layer is weighted and averaged by the thickness ratio. In other words, when the average refractive index of the A layer is NaveA, the thickness is dA (μιη), the average refractive index of the Β layer is Nave Β, and the thickness is dB (μπι), Nave = ( dAxNaveA + dB > &lt;NaveB) / ( dA + dB), and the number of calculations for nx, ny, and nz is determined by NZ. The thickness dA, dB of each layer is the thickness of each layer after peeling off the layers. The thickness of each layer is measured by a contact micrometer or the cross section of the laminated optical film is observed by a microscope or by a known non-contact measurement method, for example, using an optical interference type. The film thickness measuring device measures. Among them, the optical interference film thickness measurement which is excellent in measurement accuracy, non-destructive, line, and non-line is preferable. When each of the A layer and/or the B layer is two or more layers, for example, when the three layers of the a layer/the B layer and the A layer are formed, the total thickness of the layer A of the two layers of the dA system is 値' dB is two or more layers B. The total thickness of the layers is 値. When the NZ coefficient is close to 1, it is close to the positive A plate, and the compensation method of the VA liquid crystal is the same as the compensation method of the A plate and the C plate, and the comparison is better, so it is preferable. It is preferably 1.0 to 2.5, more preferably 1.0 to 2·0. A film having a NZ coefficient of less than 1 does not have reverse wavelength dispersion. Optical properties of each layer (in-plane phase difference)

The A layer and the B layer of the laminated optical film of the present invention each have an ideal phase difference 相位 and a phase difference wavelength dispersion property. However, in the laminated state, the phase difference between the A layer and the B layer cannot be measured. Therefore, the A layer and the B layer are peeled off from the laminated optical film, and the phase difference is measured or the polymerization of the A layer and the B layer is formed. The phase difference wavelength dispersion of the respective materials and the phase difference wavelength dispersion of the laminated optical film, the phase difference A between the A layer and the B layer is calculated, or the film of only the A layer and the film of the B layer only are laminated. The optical film was stretched under the same conditions, and the phase difference was measured to confirm the characteristics of each layer. When the in-plane retardation of the A layer at wavelengths of 450 nm and 550 nm is R4 50A and R550A, and the in-plane retardation of the B layer at wavelengths of 450 nm and 550 nm is R4 50B or R550B, the layers are adjusted to satisfy the conditions of -39-200946570. (V i )~(X ). R450A/R5 5 0A ^ 1.04 ( vi ) 2 0 0nm ^ R5 5 0 A ^ 4 0 0nm ... ( vii ) 1,04&lt;R450B/R5 5 0B ... ( viii ) 1 OOnm ^ R5 5 0B ^ 3 00nm ... ( ix ) R5 50A &gt; R550B ( x ) When the A layer and the B layer satisfy the above formulas (vi) to (x), the laminated optical film satisfies the above formula (i) to (() Iii), the color shift when viewing the liquid crystal display device in an oblique direction can be reduced, and the contrast can be improved. The A layer and the B layer have different intrinsic birefringence, and therefore, when the layers A and B are laminated as the laminated optical film, the maximum refractive index directions of the A layer and the B layer are orthogonal to each other. Therefore, the in-plane phase difference is offset from each other, and the in-plane retardation R550 of the laminated optical film is represented by R550A-R550B. By the above formula (X), the optical axis of the laminated optical film can be aligned with the polarizer in a direction orthogonal to the longitudinal direction of the film to improve the productivity of the polarizing plate. According to the method for producing a laminated optical film of the present invention, the stretching is carried out in the film width direction at the stretching enthalpy temperature and the stretching ratio, and the respective layers are subjected to the first stretching treatment to satisfy the above formulas (vi) to (X). At the same time, the laminated optical film as a whole can satisfy the above formulas (i) to (iii). Therefore, the method for producing a laminated optical film of the present invention is excellent in productivity. The above formulas (vi) and (Wii) show the wavelength dispersion of the phase difference of each layer. The R450A/R5 5 0A of the A layer is smaller than the R450B/R550B of the B layer, and the wavelength dispersion of the A layer is at each wavelength, and the flat wavelength which does not change is dispersed or the wavelength difference becomes larger as the wavelength becomes larger. The big reverse wave -40,465,470 long dispersion. When the wavelength dispersion of the layer B is larger than that of the layer A, the phase difference becomes smaller as the wavelength becomes larger, that is, the so-called positive wavelength dispersion. The layer A and the layer B satisfy this characteristic, and thus the layered optical film satisfies the characteristics of the above formulas (i) and (ii) when the layer A and the layer B cancel each other out of phase. When each of the A layer and/or the B layer is two or more layers, for example, in the case of three layers of the A layer, the B layer, and the A layer, the total of the phase differences of the A layer of the R layer of the R450A and the R5 50A is two or more layers, R450B. , R5 5 0B is the total of the phase difference of the B layer of two or more layers. From the viewpoint of obtaining uniformity of display quality, it is preferable that the A layer and the B layer have less variation in phase difference due to the place. The range of the deviation of (vi) and (viii) is preferably within ±〇.〇3, more preferably within ±〇_〇2, and particularly preferably within ±0.01. The range of deviation between R550A and R550B indicated by (vii) and (ix) is preferably within ±7 nm, more preferably within ±5 nm, and particularly preferably within ±3 nm. In order to obtain uniformity of display quality, it is preferable to have less deviation of the optical axis of each layer due to the place. The optical axis of the A layer is preferably within ±2 degrees, more preferably within ±1 degree, more preferably within ±〇·7 degrees, and particularly preferably within ±0.5 degrees, based on the film width direction. The optical axis of the layer B is preferably within ±2 degrees, more preferably within ±1 degree, more preferably within ±0.7 degrees, and particularly preferably within ±5 degrees, based on the length direction of the film. In order to obtain uniformity of display quality, both the A layer and the B layer are preferably small in thickness variation due to the place. The deviation range of dA and dB is the same as the range of the total limb thickness deviation of the laminated optical film. The average value is within ±10%, preferably within ±5%, and more preferably within ±2% of 200946570. . The thickness ratio of the A layer and the B layer is not particularly limited as long as the optical properties of the entire layer and the laminated optical film as a whole are in a preferable range, and in particular, in order to control the phase difference, specifically, in order to perform the horizontal stretching treatment once Preferably, the thickness ratio of the layer A is from 20 to 90%, more preferably from 30 to 80%, more preferably from 40 to 80%, of the total thickness of the laminated optical film. (When each of the A layer and/or the B layer contains two or more layers, the total thickness of each layer is expressed by the thickness ratio of the entire laminated optical film of the entire A layer). © Similarly, in order to obtain uniformity of display quality, it is preferable that the deviation of NZ due to the location is small. The deviation range of NZ is within an average of 0.3±0.3, preferably within an average of 値±0.2, and more preferably within an average 値±0.1. When the NZ coefficient of the laminated optical film of the present invention satisfies the above formula (v), the layer A and the layer B constituting the laminated optical film have respective preferred ranges of NZ coefficients. However, in the laminated state, the individual NZ coefficients of the A layer and the B layer cannot be obtained. Therefore, the A layer and the B layer are peeled off from the laminated optical film, and the phase difference is measured to obtain the NZ coefficient, or © A method in which the film of the A layer and the film of only the B layer are stretched under the same conditions as the laminated optical film, and the NZ coefficient of each layer is obtained by measuring the phase difference. The NZ coefficient of the A layer is NZA, and when the NZ coefficient of the B layer is NZB, it is adjusted to satisfy the following formulas (xi) and (xii). 1.0 SNZAS 1 .7 ...(xi ) -lO^NZB^O ... ( χϋ) [In the above formula (xi), NZA is a coefficient expressed by NZA=(nxA-nzA) /( nxA-nyA), wavelength 550 under 550nm. Where ηχΑ -42- 200946570 is the maximum refractive index in the plane of layer A, nyA is in the plane of layer A, and the refractive index in the direction orthogonal to nxA, nzA is the layer A orthogonal to nxA and nyA The refractive index in the thickness direction, NaveA = ( η XA + ny A + η z A ) / 3. In the above formula (xii), NZB is a coefficient expressed by NZB = ( nxB - nzB ) / ( nxB - nyB ) and has a wavelength of 5 50 nm. In the formula, the maximum refractive index in the plane of the ηχΒ B layer, nyB is in the plane of the B layer, the refractive index in the direction orthogonal to nyB, and the thickness direction of the B layer orthogonal to ηB and nyB The refractive index, NaveB = ( nxB + nyB + nzB ) /3]. The above formula (xi) corresponds to a phase difference exhibited when the cyclic olefin-based resin layer is transversely stretched, and the nxA-based stretching direction, that is, the film width direction, and the nyA-based direction is orthogonal to the stretching direction, that is, the film length direction. . The refractive index elliptical system is generally referred to as a Positive A plate. The above formula (xii) corresponds to a phase difference exhibited when the vinyl aromatic resin layer is transversely stretched, and the ηχΒ is perpendicular to the stretching direction, that is, the film longitudinal direction, and the nyB stretching direction, that is, the film width. direction. The refractive index elliptical system is generally referred to as a negative ( ® negative ) A plate. The NZ of the laminated optical film cannot be simply calculated by NZA and NZB, and is related to the change in the polarization state of the A layer represented by Poincare Sphere and the change in the polarization state of the B layer. NZA and NZB have a preferred range, preferably (NZA + NZB) /2 = 0.1 to 0.8, more preferably (NZA + NZB) / 2 = 0.2 to 0. 8, more preferably (NZA + NZB) / 2 = 0.3 to 0.7. When NZA and NZB satisfy this range, the laminated optical film has reverse wavelength dispersion regardless of the direction from which it is viewed, and no matter which direction is viewed, it does not occur due to the deviation of the optical axes of the layers -43-200946570 The problem of phase difference increases panel characteristics due to reduced color shift. The smaller the NZA, the more the panel characteristics can be improved, preferably 1. 〇 to 1.6, more preferably 1.0 to 1.5. At the same time, the larger the NZB, the more the panel characteristics can be improved, preferably -0.6 to 0, more preferably -0.5 to 0. When the NZ coefficient of each layer is in the above range, the phase difference is also observed from the oblique direction, so that the color shift of the oblique viewing angle of the liquid crystal display device is reduced, and the contrast can be improved. In terms of the uniformity of the displayed quality, both NZ A and NZB are less likely to be biased by the field. The deviation range of NZA and NZB is preferably within ±0-2 from the average, and more preferably within ±0.1. [Polarizing Plate] The polarizing plate of the present invention is a laminated optical film of the present invention having a function of a retardation film on at least one side, and preferably at least one side of the polarizer (polarizing film) is laminated on the surface. The constituting member of the laminated optical film of the invention. The polarizer constituting the polarizing plate of the present invention, for example, a film made of a polymerized polymer such as polyvinyl alcohol (PVA) or a part of PVA, is subjected to iodine or a dichroic dye in an appropriate order or method. The film obtained by the dyeing treatment, the stretching treatment, the crosslinking treatment, and the like of the dichroic material formed by the method is a linear polarized light and is transmitted when the natural light is incident. It is particularly preferable to use light having a high transmittance and excellent polarization. The thickness of the polarizer constituting the polarizing plate is generally suitably 5 to 80 μm, but the present invention is not limited thereto. In addition to the PVA-based film described above, the polarizer may be used as long as it has the same characteristics. For example, a film composed of a cyclic olefin resin may be subjected to a dyeing treatment, a stretching treatment, a crosslinking treatment, or the like in an appropriate order or in a method of -44 - 200946570, or a solution of a dichroic substance may be applied. The aligner, or a wire grid type of photon. Usually, the polarizing plate is composed of a polarizer, a retardation film, and a protective film. However, in the form of a retardation film constituting the polarizing plate, the laminated optical film is interposed with an adhesive or an adhesive, and is bonded to polarized light. Use at least one side of the child. The laminated optical film may be bonded to the polarizer on the A layer side or to the polarizer on the B layer side. Such a polarizing plate is excellent in properties such as heat resistance, moisture resistance, and chemical resistance, and has a sufficient function as a protective film. Therefore, the polarizer is laminated to have a function as a retardation film. On the surface of the laminated optical film of the present invention, it is not necessary to additionally laminate the protective film. The polarizing plate of the present invention is a structure in which a laminated optical film of the present invention having a function as a retardation film is laminated on only one side of a polarizer, and the other side of the polarizer can be laminated, for example, a triethylene fluorene fiber. A known protective film such as a TAC, a cyclic olefin resin film, or an acrylic resin film®. The lamination of the laminated optical film of the present invention and the polarizer, and the bonding of the protective film and the polarizer are known layers or adhesions of the respective layers between the pressure-sensitive adhesive, the thermosetting adhesive, the photocurable adhesive, and the like. The agent is then manufactured. The adhesive and the adhesive are preferably excellent in transparency, and specifically, for example, natural rubber, synthetic rubber, vinyl acetate/vinyl chloride copolymer, polyvinyl ether, polyvinyl alcohol, acrylic resin, modified polyolefin resin. A curing adhesive which adds a curing agent such as a compound containing an isocyanate group to an adhesive such as an adhesive or a functional group having a hydroxyl group or an amine group; and a dry layer of a polyamine-45-200946570 ethyl urethane system Agent; synthetic rubber-based adhesive, epoxy-based adhesive, and the like. The polarizing plate of the present invention preferably contains at least one layer selected from the group consisting of an antireflection layer and an antiglare layer, and is preferably provided on the outer side of the protective film surface on the side opposite to the polarizer. These layers can be applied by a known coating method such as gravure coating, die coating, or slot coating by using a thermosetting resin composition or a photocurable resin composition, and if necessary, drying and hardening. Formed. These layers may be directly provided on the protective film, or a base film may be used, and the base film may be attached to the protective film. Further, the layer may be formed before the protective film or the base film is bonded to the polarizer, or may be formed by bonding the polarizer. The antireflection layer is usually composed of a low refractive index layer, and may have a laminated structure of a low refractive index layer and a high refractive index layer in order to further improve reflection prevention performance, and may have a hard coat layer in order to secure scratch resistance. The lamination sequence is laminated from the side close to the protective film, preferably in the order of the hard coat layer/high refractive index layer/❹ low refractive index layer. If necessary, there may be a medium refractive index layer between the low refractive index layer and the high refractive index layer, or between the hard coat layer and the high refractive index layer. These layers can be formed by sputtering, vapor deposition, or the like, and are preferably formed by coating the curable composition as described above. The composition for forming the low refractive index layer and the high refractive index layer is, for example, a known curable composition. Examples of the binder resin include an epoxy resin, a phenol resin, a melamine resin, an alkyd resin, a cyanate resin, an acrylic resin, a polyester resin, an urethane resin, and a decane tree. 46-200946570 contains one or more kinds of fats, and the composition for forming a low refractive index layer contains a fluorine-containing compound, and the composition for forming a high refractive index layer contains inorganic particles having a high refractive index, such as cerium oxide, aluminum oxide, or zirconium oxide. Metal oxide particles such as tin oxide, cerium oxide, neodymium oxide, and magnesium fluoride. A known range can be used for the refractive index and thickness of the low refractive index layer and the high refractive index layer. However, in order to improve the reflection preventing effect, the refractive index of the low refractive index layer (25t: average refractive index at a wavelength of 5 89 nm) is preferably 1.45, the thickness of the low refractive index layer is preferably 50 to 300 nm. Further, the refractive index of the high refractive index layer (25 ° C, average refractive index at a wavelength of 58 9 nm) is preferably greater than the refractive index of the low refractive index layer of 0.05 or more, and the thickness is preferably 50 to 10,000 nm. As the constituent material of the coating layer, a known material can be used. The material may be, for example, one or more of a phthalic acid resin, an acrylic resin, a melamine resin, and an epoxy resin, and may contain inorganic particles such as a metal oxide. The hard coat layer may have an effect as an antiglare layer described later. V Further, the thickness of the hard coat layer is not particularly limited, and is preferably 2 to ΙΟμιη. The anti-glare layer is a layer which has irregularities on the surface of the layer and exhibits an anti-glare property, and the center line average roughness of the surface is preferably 0.1 to Ι.Ομιη. The composition for forming the antiglare layer is preferably a curable composition containing organic particles and/or inorganic particles. As the binder resin for the curable composition, the above-mentioned binder resin for forming a curable composition for preventing the film formation can be used. The preferred anti-glare property is that the layer has a Haze of 5 to 65% and a total light transmittance of 80 to 98%. -47-200946570 [Liquid crystal display device] The liquid crystal display device of the present invention is preferably provided with the above-described polarizing plate of the present invention. The liquid crystal display device of the present invention is a comparative optical film when viewing a picture obliquely, and has a small color shift amount when viewing the picture obliquely, and has a laminated optical film or a polarizing plate with less optical unevenness. Uniform display and excellent durability for long-term use in harsh environments, no external light. [Embodiment] [Embodiment] Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited by these examples. In the following examples and comparative examples, "parts" and "%" mean "parts by weight" and "% by weight" unless otherwise stated. Room temperature means 2 5 °C. In the following examples and comparative examples, various measurements and evaluations were carried out in the following manner. 〇[Polymerization rate] The polymerization reaction solution after weighing is placed in an aluminum container, and heated to a constant temperature on a hot plate heated to 300 ° C to remove residual monomers and solvent, and then the residual polymer is measured. The weight is determined by the ratio of the theoretical amount of polymer produced. [Hydrogenation rate] -48-200946570 A nuclear magnetic resonance spectrometer (NMR) was measured by using AVANCE500 manufactured by Bruker Co., Ltd., and measuring 1H-NMR in a measurement solvent of d-chloroform. The hydrogenation ratio was calculated by calculating the composition of the monomer from the integral enthalpy of 5.1 to 5.8 ppm of vinylidene, 3.7 ppm of methoxy group, and 0.6 to 2.8 ppm of aliphatic proton. [Glass transition temperature (Tg)] ❹ Using a heat differential scanning analyzer (manufactured by Seiko Instruments Inc., trade name: DSC6200), the temperature is measured at a temperature increase rate of 2 (TC/min) in accordance with Japanese Industrial Standard K7121. Molecular weight (Mw) and molecular weight distribution (Mw/Mn)] Using a gel permeation chromatography (HLC-8220GPC manufactured by Tosoh Corporation), the column was sequentially connected: Hxl-H, TSK gel G7000HXL manufactured by Tosoh Corporation , TSKgel GMHXL2 only, TSK gel G2000HXL; Dissolving agent: tetrahydrofuran; flow rate: 1 mL/min; sample concentration: 0.7 to 0.8% by weight; injection amount: 70 μί; measurement temperature: 40 ° C; detector: RI (4 (TC): Standard material: TSK standard polystyrene manufactured by Tosoh Co., Ltd.' The weight average molecular weight (Mw) and molecular weight distribution (Mw/Mn) were measured. The above Μη is the number average molecular weight. [Logarithmic viscosity] Ubbelohde type was used. Viscosity meter in chloroform, sample concentration 〇·5 g/dL, measured logarithmic viscosity at 30 ° C. -49- 200946570 [Thickness] The cross section of the laminated optical film was measured by optical microscopy. When the profile is not suitable for microscopic observation, The section is partially embedded in epoxy In the case of the fat, a thin section was made using a microtome RV-240 made by a large-and-light machine. The profile was made clear and observed by an optical microscope. [Phase difference] © Using an automatic birefringence meter (Oji Scientific Instruments Co., Ltd., KOBRA) -21 ADH) The measured yttrium at wavelengths of 4 7 8.8 nm, 5 4 6 · Onm, 6 29.3 nm, and 74 7.3 nm was calculated by Cauchy's formula to obtain films at wavelengths of 450 nm, 550 nm, and 650 nm. In-plane retardation R45 0, R5 50, R6 50. In the in-plane phase difference of the film and the state in which the retardation axis is tilted, the NZ coefficient is obtained from the oblique phase difference of the polar angle of 40 degrees, the film thickness, and the average refractive index of the film. [Monomer transmittance and polarization degree] The monomer transmittance and the degree of polarization of the polarizing plate were measured using V-73 00 manufactured by JASCO Corporation. [Measurement of comparison of liquid crystal display devices, etc.] EZ using ELDIM (share) Contrast-XL88", the brightness, viewing angle, contrast and color shift of the liquid crystal panel were measured in a dark room with an illuminance of 1 lx or less. -50- 200946570 [Adhesion between laminated optical film layers] The laminated optical film was double-sided Tape attached to the glass, each The cutting blade 'peeling method confirmed adhesion, according to the following the evaluation A:. Between the cutting blade can not be inserted into the layer, nor peeling B:. Between the cutting blade insert layer, can be made peeling site, but not connected © off. C: The dicing blade is interposed between the layers, and the peeling is continuously peeled off. [Adhesion of the anti-reflection layer and the anti-glare layer] The method described in JIS-D0202 by "Ci-24", Niban Co., Ltd. is used. The checkerboard peeling test was carried out and evaluated according to the benchmark. A: The number of residual cells is 100 in 100 cells. WB: The number of residual cells is 90 or more in 100 squares. C: The number of residual cells is 100. Less than 90. [Environmental test (phase difference change)] Dry heat test for laminated optical film produced: hour at 95 °C, damp heat test: 853⁄4, relative humidity 85% at 500 hours, hit test·· The temperature was reversed at -40 ° C for 30 minutes and at 85 ° C for 30 minutes, and the amount of phase change (%) in the front and back phases was measured under three conditions of 200 cycles, and evaluated according to the following criteria. Continued stripping) The following 500 hot punches are 1 difference -51 - 200946570 A : The amount of change in phase difference is within ±2% under 3 conditions, and the appearance does not change. B: The amount of change in the phase difference is within ±3 % under the condition of 3, and there is no change in appearance. C: The amount of change in phase difference exceeds ±3% under each condition. Or visually confirm the change in appearance such as deformation, whitening, cracking or peeling between layers. [Environmental test (change of coating film)] © For the protective film provided with the antireflection layer and the antiglare layer, the appearance change or the peeling of the layer is checked before and after the test under the above three conditions, and the following criteria are used. Evaluation. Under the condition of A: 3, there is no change in appearance. B: whitening, yellowing, etc., the color changes slightly. C: Visually, deformation, cracking, or peeling between layers was observed, and there was a noticeable change in appearance. 〇 [Reflectance] The surface of the non-reflection preventing layer on which the protective film of the antireflection layer (before being bonded to the polarizer or peeled off from the polarizer) is applied by black spray coating, and the spectroscopic reflectance measuring device ( The spectrophotometer U-3410 of the large-scale sample integrating sphere attachment device 50-09090, manufactured by Hitachi, Ltd., was used to evaluate the reflectance in the range of 340 to 700 nm from the reflection preventing layer. Specifically, the reflectance of the -52-200946570 layer laminate (reflection film) in the range of 380 to 780 nm was measured based on the reflectance of the vapor deposited film of aluminum (100%). [Haze (haze) and total light transmittance] For a protective film in a state before being bonded to a polarizer or peeled off from a polarizing plate, a haze meter HZ-2 (manufactured by Suga Tester Co., Ltd.) is used, by JIS The method described in K7 105 measures Haze and total light transmittance. © [Synthesis Example 1] Synthesis of cyclic olefin resin (A1) 8-methyl-8-methoxycarbonyltetracyclo[4.4.O.l2'5"7'1 G]-3-dodecene 215 parts, 35 parts of bicyclo [2.2.1] hept-2-ene, 18 parts of 1-hexene (molecular weight modifier), and 750 parts of toluene (solvent for ring-opening polymerization) were placed in a reaction vessel substituted with nitrogen. This solution was heated to 60 °C. Next, a solution of a polymerization catalyst: 0.62 parts of a toluene solution of triethylaluminum (1.5 mol/1) and tungsten hexachloride (t-butanol modified with t-butanol and methanol) were added to the solution in the reaction vessel. Methanol: Tungsten = 0.35 Molar: 0.3 Molar: 1 More) Toluene Solution (concentration 〇·〇5 MoΠ) 3.7 parts 'This solution was heated and stirred at 80 ° C for 3 hours to produce ring-opening polymerization. The reaction gave a ring-opening polymer solution. The polymerization conversion ratio of this polymerization reaction was 97%'. The logarithmic viscosity of the obtained ring-opened polymer' in chloroform of 3 Torr was 〇75 dl/g. The ring-opening polymer solution 1 obtained as described above is injected into the autoclave, and 0.12 parts of RuHC1(C0)[p(c6H5)3]3 is added to the ring-opening polymer solution, and the pressure is 1 kg in hydrogen gas. /cm2, the reaction temperature was 165 ° C, and the mixture was heated and stirred for 3 hours to carry out a hydrogenation reaction. After the obtained reaction solution (hydrogenated polymer solution) was cooled, the hydrogen gas pressure was released. This reaction solution -53-200946570 was poured into a large amount of methanol, and the coagulum was separated and recovered, and dried to obtain a hydrogenated polymer (hereinafter referred to as a cyclic olefin resin (A1)). The resin A1 thus obtained had a hydrogenation rate of 99.9%, a glass transition temperature of 125 ° C, a number average molecular weight (?η) of 32,000, a weight average molecular weight (Mw) of 137,000, and a molecular weight distribution (Mw/Mn) of 4.29. The logarithmic viscosity system is 69.69 dl/g. [Synthesis Example 2] Synthesis of cyclic olefin resin (A2) © In addition to using tetracyclo[4.4.0.12'5.17, 1()]-3-dodecene 53 parts, 8-ethylenetetracyclo[4.4. Addition amount of 0.12'5.17,1()]-3-dodecene 46 parts, tricyclo[4.3.0.12'5]·癸-3,7-diene 66 parts, 1-hexene (molecular weight regulator) In the same manner as in Synthesis Example 1, a hydrogenated polymer (hereinafter referred to as a cyclic olefin resin (A2)) was obtained in the same manner as in Synthesis Example 1 except that the solvent for the ring-opening polymerization was replaced by cyclohexane. The obtained resin A2 has a hydrogenation rate of 99.9% and a glass transition temperature (

Tg) is 125 ° C, Μ η 30,000, Mw is 1 22,000, molecular weight fraction (Mw / Mn) is 4.07, and the logarithmic viscosity is 0.63 dl / g. [Synthesis Example 3] Synthesis of Vinyl Aromatic Resin (B1) In a glass flask equipped with a stirrer, a condenser, and a thermometer, 27.87 g (1.23 mol) of styrene 1 and 13.33 g (0.13 6 mol) of maleic anhydride were added. Solvent: 75 g of toluene and a radical initiator: 1, 1, azobis(cyclohexane-carbonitrile) 67.67 g (2.7 mmol), and heated to 90 ° C to cause a reaction for 15 hours. A part of this polymerization liquid was taken out, and the reaction rate was determined to be -54 to 200946570 to obtain 85%. Further, the molecular weight was measured to obtain Mw = 129,900 and M w / M n = 2.0 〇. The resulting polymerization solution was diluted with tetrahydrofuran to solidify in a large amount of methanol. The polymer was recovered and purified, and dried in a vacuum oven at 801 for 2 days. The molecular weight and logarithmic viscosity of the obtained polymer were respectively measured to obtain Mw = 1 3 1,9 1 0 (Mw/Mn = 1 · 88 ), logarithmic viscosity η = 0·44 dL/g, and the yield was 80%. The copolymer composition ratio analyzed by NMR is such as ruthenium. The obtained polymer was a copolymer of styrene-maleic anhydride at a glass transition temperature of 122 °C. The obtained vinyl aromatic copolymer (resin) was designated as B1. [Synthesis Example 4] Synthesis of Vinyl Aromatic Resin (B4) In a glass flask equipped with a stirrer, a condenser, and a thermometer, 145.6 g (1.40 m) of styrene, a solvent: 75 g of toluene, and a radical initiator were placed. :1,1'-azobis(cyclohexane-1-carbonitrile) 〇.67g (2.7mmol), heat was added to 90 ° C to cause a reaction for 15 hours. A part of this polymerization liquid was taken out, and the reaction rate was measured to obtain 93%. The obtained polymerization reaction solution was diluted with tetrahydrofuran to solidify in a large amount of methanol, and the polymer was recovered and purified, and dried in a vacuum oven of 8 Ot: for 2 days. The molecular weight and logarithmic viscosity of the obtained polymer were measured to obtain Mw = 168,300 (Mw/Mn = 1.68), logarithmic viscosity η = 0.42 dL/g, and yield of 87%. The obtained polymer was polystyrene, and the glass transition temperature was 10 °C. The obtained vinyl aromatic copolymer (resin) was designated as B 4 . -55- 200946570 [Preparation Example 1] Preparation of water-based adhesive 250 parts of distilled water was poured into a reaction vessel, and then 90 parts of butyl acrylate, methyl propylene acid 2 - ethyl ester 8 parts, and diethylbenzene benzene 2 were added. 0.1 part of potassium oleate and potassium oleate were added to the reaction container, and the mixture was stirred and stirred using TEFLON (registered trademark). After the inside of the reaction vessel was replaced with nitrogen, the system was heated to 50 ° C, and 2 parts of potassium persulfate was added to start polymerization. After 2 hours, 1 part of potassium persulfate was added, and the system was heated to 80 ° C, and the polymerization was continued for 1 hour to obtain a polymer dispersion. Next, the polymer dispersion was concentrated to a solid content concentration of 70% using an evaporator to obtain a water-based adhesive (adhesive having a polar group) composed of an aqueous dispersion of an acrylate-based polymer. The acrylate-based polymer constituting the water-based adhesive prepared above had a Μη of 69,000 as measured by a GPC method and a Mw of 135,000, and a logarithmic viscosity of 1.2 dL/g as measured in chloroform at 30 °C. [Preparation Example 2] Preparation of coating liquid for hard coat layer Methyl ethyl ketone/isopropanol of cerium oxide particles having an average particle diameter of 20 μm modified by an unsaturated group in a container for shielding ultraviolet rays 86 parts of dispersion (solids are divided into 30 parts), dipentaerythritol hexaacrylate 65 parts, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinylpropan-1·one 5 parts of ΜΙΒΚ 44 parts were stirred at 50 ° C for 2 hours to obtain a coating solution for a hard coat layer of a homogeneous solution. After weighing 2 g of this coating liquid on an aluminum dish, it was dried on a hot plate at 120 ° C for 1 hour to obtain a solid content of 50 to -56 to 200946570%. [Preparation Example 3] Preparation of a coating liquid for a low refractive index layer A stainless steel pressure cooker equipped with a magnetic stirrer having an internal volume of 2.0 L, which was sufficiently substituted with nitrogen, was prepared, and then 400 g of ethyl acetate and perfluoro(propyl vinyl ether) were charged. 53.2g, 36.1g of ethyl vinyl ether, 44.0g of hydroxyethyl vinyl ether, l.OOg of oxidized laurel, polydimethyl methoxy oxane containing azo (© VPS1001 (trade name), Wako Pure Chemical Industries, Ltd. (manufacturing))) 6.0 g and a nonionic reactive emulsifier (NE-30 (trade name), manufactured by Asahi Kasei Co., Ltd.) 20 g, and then cooled to -50 ° C with dry ice-methanol, again Nitrogen is removed from the system by nitrogen. Next, 120 g of hexafluoropropylene was introduced, and the temperature was raised. The pressure in the autoclave at a temperature of 60 ° C is 5.3 x 105 Pa. Thereafter, the reaction was continued by stirring at 70 ° C for 20 hours, and when the pressure was lowered to 1.7 x 105 Pa, the autoclave was water-cooled to stop the reaction. After reaching room temperature, the unreacted monomer was released, and the V autoclave was opened to obtain a polymer solution having a solid concentration of 26.4%. The obtained polymer solution was poured into methanol to precipitate a polymer, which was washed with methanol, and vacuum-dried at 50 ° C to obtain 220 g of a hydroxyl group-containing fluoropolymer. Next, a separable flask having a capacity of 1 L of an electromagnetic stirrer, a glass cooling tube, and a thermometer was charged with the hydroxyl group-containing fluoropolymer 5 〇g, polymerization inhibitor: 2,6-di-t-butylmethyl group. Phenol 〇 〇 及 and methyl butyl ketone (MIBK) 370g, at 20 ° C, the hydroxyl-containing fluoropolymer dissolved in MIBK, stirring until the solution becomes transparent, uniform -57- 200946570 Second, this Add 2-methylpropenyloxyethyl isocyanate 15.lg to the system, stir until the solution is homogeneous, then add dibutyltin dilaurate 〇.lg to start the reaction, the temperature of the system is kept 5S~65 °C, continue to stir After 5 hours, a MIBK solution of a fluorine-containing polymer containing an ethylenically unsaturated group was obtained. The solid content of this solution was obtained to be 15.0% by weight. 507 g (solid content: 76 g) of the above-mentioned fluorene-containing fluorinated polymer-containing fluorinated solution, methyl ethyl ketone dispersion of cerium oxide particles having an average particle diameter of 45 nm whose surface was modified with an unsaturated group 65.6 g (solid content: 21 g), photopolymerization initiator: 1-hydroxycyclohexyl phenyl ketone (irgacure 184, manufactured by Ciba Specialty Engineering) 3 g and MIBK 1424.4 g were injected into a glass separable flask with a stirrer The mixture was stirred at room temperature for 1 hour to obtain a uniform coating liquid for a low refractive index layer. The coating liquid was found to have a solid content concentration of 5.0% by weight. [Preparation Example 4] Preparation of anti-glare layer and coating liquid for hard coat layer Pentaerythritol triacrylate (manufactured by Toagosei Co., Ltd., trade name "Aronix M-305" (specific gravity 1.179)) 90.0 parts, average particle diameter 1.5 μm of cerium oxide particles (manufactured by Tosoh Silica Co., Ltd., trade name "Nio seal E-200" (specific gravity 2.150)) 10.0 parts by mass and photopolymerization initiator: 1-cyclohexyl phenyl ketone (Irgacurel 84, manufactured by Ciba· Speciality. Chemicals) 5.0 parts were added to propylene glycol monomethyl ether, and mixed to prepare a solid concentration of 30% by weight. Coating solution. [Production Example 1] Production of Polarizer - 58- 200946570 A film made of a polyvinyl alcohol (hereinafter also referred to as "PVA") having a film thickness of 120 μm was formed to have an iodine concentration of 0.03% by weight and a potassium iodide concentration of 0.5% by weight. In a dyeing bath of an aqueous solution of 30 ° C, uniaxial stretching (pre-stretching) in the longitudinal direction at a stretching ratio of 3 times continuously, and an aqueous solution having a boric acid concentration of 5% by weight and a potassium iodide concentration of 8% by weight is In a cross-linking bath of 5 ° C, uniaxial stretching (post-stretching) was carried out in the longitudinal direction at a draw ratio of 2 times, and then drying and rolling were carried out to obtain a roll-shaped polarizer.制造 [Production Example 2] Production of optical film (negative C plate) and polarizing plate The film roll (1 50 μm) of the cyclic olefin resin (A1) obtained in Synthesis Example 1 was pulled at a stretching temperature of 1 33 ° C. The draw ratio was 1.6 times and the longitudinal stretch was carried out, and then the tenter was transversely stretched at a stretching temperature of 135 ° C and a draw ratio of 2.4 times to obtain a stretched film having a thickness of 68 μm. The in-plane retardation of the obtained stretched film was R550 = 0 to Jnm, and the average Rth was 190 nm. (Rth is one of the indexes indicating the phase difference in the thickness direction, and is represented by { (nx + ny) / 2-nz} xd table ® . nx is the maximum refractive index in the plane of the measurement point of the optical film, and ny is expressed in the surface. In the inside, the refractive index in the direction orthogonal to nx, nz represents the refractive index in the thickness direction of the stretched film orthogonal to nx and ny, and d is the film thickness (nm) at the measurement point. This film was applied to one surface of the polarizer obtained in Production Example 1, and the roll-shaped film was adjusted, and the water-based adhesive prepared in Preparation Example 1 was continuously adhered to both, and on the other side of the polarizer, the concentration was used. A film made of a 5% PVA aqueous solution was adhered to a film of 80 μm thick cellulose triacetate (hereinafter also referred to as "TAC") after saponification treatment to obtain a polarizing plate (Ρ0). The resulting polarizing plate of -59-200946570 had a monomer transmittance of 42.1% and a degree of polarization of 99.9%. [Example 1] &lt;Production of laminated optical film (F1)&gt; A hot air dryer in which a ring of a cyclic olefin resin (A1) and a particle of a vinyl aromatic resin (B1) were each passed through a dry air was used. Dry at 100 ° C for 5 hours. These pellets were co-extruded by a melt extrusion molding machine having a series of 6 5 mm φ spirals and 50 mm φ spirals at a molten resin temperature of 260 ° C ® and a T lip opening width of 600 mm to obtain an A1 layer. An unstretched laminated optical film roll of (150 μm) / B1 layer (140 μm). This laminated optical film roll was transversely stretched by a tenter at a stretching temperature of 128 ° C and a stretching ratio of 2.0 times to obtain a laminated optical film (F1) having a thickness of 148 μm. The in-plane retardation of the resulting laminated optical film was R450 = 79 nm, R550 = 90 nm, R650 = 96 nm, and NZ = 1.65. When the adhesion of the laminated optical film was confirmed, it was found that the film was not peeled off, and the adhesion was good. Further, as a result of the environmental test ©, under the condition of 3, the amount of change in the phase difference was within ±2%, and no change in appearance was observed. &lt;Production of Polarizing Plate (P1) and Evaluation of Liquid Crystal Display Device&gt; The laminated optical film (F1) thus obtained was subjected to adjustment of a roll-shaped film on one side of a polarizer obtained in Production Example 1 (polarization was performed) The stretching direction of the absorption axis of the sub-particle is orthogonal to the stretching direction of the laminated optical film, and the vinyl aromatic resin layer faces the polarizer side, and the water-based adhesive prepared in Preparation Example 1 is continuously bonded to -60-200946570. On the other side of the polarizer, a saponified 80 μη thick cellulose triacetate (TAC) film as a protective film was pasted with an adhesive composed of a 5% aqueous solution of PVA to obtain a polarizing plate. (Ρ1). The monomer transmittance and the degree of polarization of the obtained polarizing plate were 42. 1% and 99.9%, respectively. In order to evaluate the characteristics of the polarizing plate, the polarizing plate and the retardation film which are adhered to the front and back sides of the liquid crystal panel of the LCD panel of the Samsung Electronics Co., Ltd. (model LN40R8 1BD) are peeled off. On the other hand, an acrylic transparent adhesive film was used, and a negative C plate polarizing plate (Ρ0) obtained in Production Example 2 was attached to the back surface, and a polarizing plate (Ρ1) was attached to the front surface, and each of them was bonded to the original polarizing plate. It is bonded to the same state through the axis. At this time, the retardation film (laminated optical film) of the back surface, the front surface, and the polarizing plate is bonded to each other in a state in which the liquid crystal is on the cell side. The contrast of the liquid crystal television having the polarizing plate was measured. In the range of omnidirectional and polar angles of 0 to 80 degrees, the maximum 値: 5260, the minimum 値: 110 is higher than the number 高, and no unevenness was visually observed. Further, in the black display state, when the azimuth angle is 45 degrees, the color shift of the polar angle 〇 60 degrees is measured as Δνι'ν' = 0.03. [Example 2] &lt;Production of laminated optical film (F2)&gt; In addition to the cyclic olefin resin (Α1) and the vinyl aromatic resin (Β2), Dilark D332 (styrene-butylene) manufactured by Nover Chemicals Co., Ltd. was used. Diacid anhydride copolymer (maleic anhydride content: 15%), Tg: 128 ° C) Externally, as in Example 1, an unstretched layer composed of an A1 layer (150 μm) / a B2 layer 200946570 (120 μηι) was obtained. Optical film roll. This laminated optical film roll was transversely stretched by a tenter at a stretching temperature of 130 ° C and a stretching ratio of 2.0 times to obtain a laminated optical film (F2) having a thickness of 136 μm. The in-plane retardation of the resulting laminated optical film was R450 = 82 nm, R5 5 0 = 92 nm, R650 = 98 nm, and NZ = 1.72. When the adhesion of the laminated optical film was confirmed, it was not peeled off, and the adhesion was good. As a result of the environmental test, under the condition of 3, the amount of change in the phase difference was within ±2%, and no change in appearance was observed. &lt;Production of Polarizing Plate (P2) and Evaluation of Liquid Crystal Display Device&gt; A polarizing plate (P 2 ) was obtained in the same manner as in Example 1 except that the laminated optical film (F2) was used instead of the laminated optical film (F1). The monomer transmittance and the degree of polarization of the polarizing plate were measured and found to be 42.0% and 99.9%, respectively. In addition to using a polarizing plate (P2) instead of the polarizing plate (P1), and the embodiment! Similarly, the comparison of the LCD TV is measured. In the range of omnidirectional and polar angles of 0 to 80 degrees, the maximum 値 is measured: 5 1 1 0, the minimum 値: the higher number of 〇〇, and no unevenness is visually observed. . Further, in the black display state, when the azimuth angle is 45 degrees, the color shift of the pupil angle 〇 60 degrees is measured as Au'v' = 0.04. &lt;Production of Polarizing Plate (P2') and Evaluation of Liquid Crystal Display Device&gt; When the polarizing film and the laminated optical film are bonded together with a water-based adhesive, the cyclic olefin-based resin layer faces the polarizer side, and the polarizing plate (P2) also obtained a polarizing plate (P2 '). The monomer transmittance and the degree of polarization of the polarizing plate were measured and found to be 42.0% and 99.9%, respectively. Except that the polarizing plate (P2,) was used instead of the polarizing plate (P1), the ratio of -62 to 200946570 of the liquid crystal television was measured in the same manner as in the first embodiment, and the range was measured in the range of omnidirectional and polar angles of 8080 degrees. Maximum 5 080, minimum 値: a higher number of 100, no unevenness is found visually. In the black display state, when the azimuth angle is 45 degrees, the polar angle 〇~6 测定 is measured as Au'v'=0.04 . [Example 3] &lt;Production of laminated optical film (F3)&gt; RYU REXA14 (styrene·acrylic acid) made of DIC (manufactured by DIC) was used except that the cyclic olefin resin (A1) and the vinyl aromatic resin (B3) were used. An unstretched laminated film roll having the same appearance as the first embodiment (150 μm) / B3 layer (ΙΙΟμηη) was obtained in the same manner as in Example 1 except that the copolymer and Tg: 1 2 9 °C. This laminated optical film roll was transversely stretched by a tenter at a stretching temperature of 130 ° C and an elongation of 2.0 times to obtain a laminated film (F3) having a thickness of 130 μm. The in-plane retardation of the resulting laminated optical film was R45 0 = , R550 = 91 nm, R650 = 96 nm &gt; NZ = 1.74. The adhesion of this laminate ® film was confirmed, and it was found that it was not peeled off and the adhesion was good. In addition, the environmental test results showed that the variation of the phase difference was within ±2% under the condition of 3, and the appearance did not change. &lt;Production of Polarizing Plate (P3) and Evaluation of Liquid Crystal Display Device&gt; A polarizing plate (P3) was obtained in the same manner as in Example 1 except that the laminated optical film (F3) was used instead of the laminated optical film. The transmittance and polarization of the polarized monomers were measured and found to be 42.0% and 99.9%, respectively. The same as Example 1 except that the polarizing plate (P3) was used instead of the polarizing plate (P1). Another degree of methyl;;l A1 optical stretching optical 8 1 nm optical inspection found (F1 board made the sample, -63- 200946570 determination of LCD TV comparison, in all directions, polar angle 0~80 degrees Within the range of 'measured maximum 値: 5 0 5 0, minimum 値: a higher number of 10000, no unevenness was found visually. Also, in the black display state, when the azimuth angle is 45 degrees, the polar angle is measured. The color shift of ~60 degrees is Au'v' = 0.04. [Example 4] &lt;Production of laminated optical film (F4)&gt; In addition to lamination, it is composed of A1 layer (75 μm) / B3 layer (ΙΙΟμιη) / An unstretched laminated optical film roll was obtained in the same manner as in Example 3 except that three layers of Α1 φ layer (75 μm) were formed. The laminated optical film roll was stretched at a stretching temperature of 130 ° C and a draw ratio of 2.0 times. The web was stretched transversely to obtain a laminated optical film (F4) having a thickness of 1 3 Ομηι. The in-plane retardation of the laminated optical film obtained was R450 = 84 nm, R5 5 0 = 93 nm ' R650 = 99 nm, NZ = 1.82 The adhesion of the laminated optical film was confirmed, and it was found that it was not peeled off, and the adhesion was good. The result of the environmental test, under the condition of 3 conditions, The amount of change in the difference was within ±2%, and no change in appearance was observed. © &lt;Production of Polarizing Plate (P4) and Evaluation of Liquid Crystal Display Device&gt; Using Laminated Optical Film (F4) Instead of Laminated Optical Film (F1) In the same manner as in the first embodiment, a polarizing plate (P4) was obtained in the same manner as in Example 1 except that the side of the polarizer was formed (the three layers were laminated). The ratio and the degree of polarization were measured by 41.9% &amp; 99.9%, respectively. Except that the polarizing plate (Ρ4) was used instead of the polarizing plate (Ρ1), the comparison of the liquid crystal television was measured in the omnidirectional and polar angles. 0 -64- 200946570 In the range of ~80 degrees, the maximum measured 値: 4890, the minimum 値: a higher number of 90, no unevenness was found visually. Also, in the black display state, when the azimuth angle is 45 degrees, the measurement is made. The color shift of the polar angle 〇 60 degrees is Au'v' = 0.05. [Example 5] &lt;Production of laminated optical film (F5)&gt; In addition to using cyclic olefin resin (A2) and vinyl aromatic The family ❹ resin (B2) is a Dilark D3 32 manufactured by Noverchemicals, and an A2 layer is obtained in the same manner as in the first embodiment (15). An unstretched laminated optical film roll composed of 0 μm η / B 2 layer (130 μηη). The laminated optical film roll was stretched transversely by a tenter at a stretching temperature of 1 3 (TC, draw ratio of 2.0 times to obtain a thickness 133 μηη laminated optical film (F5). The in-plane phase difference of the resulting laminated optical film was R450 = 82 nm ' R5 5 0 = 9 1 nm ' R65 0 = 96 nm &gt; NZ = 1.72 . When the adhesion of the laminated optical film was confirmed, it was found that a part of the interlayer was peeled off, but the material was broken during the peeling. As a result of the environmental test, under the condition 3, the change in the phase difference was within ±2%, and no change in appearance was observed. &lt;Production of Polarizing Plate (P5) and Evaluation of Liquid Crystal Display Device&gt; A polarizing plate (P5) was obtained in the same manner as in Example 1 except that the laminated optical film (F5) was used instead of the laminated optical film (F1). The monomer transmittance and the degree of polarization of the obtained polarizing plate were measured and found to be 42.0% and 99.9%, respectively. In the same manner as in the first embodiment, except that the polarizing plate (P5) was used instead of the polarizing plate (P1), the contrast of the liquid crystal television was measured, and the maximum 値 was measured in the range of omnidirectional and polar angles of 0 to 80 degrees: 4 9 7 0, the minimum 値: the higher number of 10 0, the target -65- 200946570 see no unevenness. Further, in the black display state, when the azimuth angle is 45 degrees, the color shift of the polar angle of 0 to 60 degrees is measured as Au'v' = 0.04. [Comparative Example 1] &lt;Production of Optical Film (F6)&gt; The cyclic olefin resin (A 1 ) was separately extruded to obtain a film roll (150 μm) of A1. The film roll of A1 was transversely stretched by a tenter at a stretching temperature of 1 40 ° C and a stretching ratio of 3.0 times to obtain an optical film (F6) having a thickness of ❹ 55 μm. The in-plane retardation of the optical film is R450=12 1nm, R550 = 1 20nm, R650 = 1 19 9nm, ΝΖ=1·33 〇 and the result of the environmental test. Under the condition of 3, the phase difference changes by ±2 %. Within, no change in appearance was observed. &lt;Production of Polarizing Plate (Ρ6) and Evaluation of Liquid Crystal Display Device&gt; A polarizing plate (Ρ6) was obtained in the same manner as in Example 1 except that the optical film (F6) was used instead of the laminated optical film (F1). The single-body transmittance and the degree of polarization of the obtained polarizing plate were measured and found to be 41.8% and 99.9%, respectively. In the same manner as in the first embodiment, except for using a polarizing plate (Ρ6) instead of the polarizing plate (Ρ1), the contrast of the liquid crystal television was measured, and the maximum 値: 5 160 was measured in the range of omnidirectional and polar angle 〇 80 degrees.値: The higher number of 85, no unevenness was found visually. Further, in the black display state, when the azimuth angle is 45 degrees, the color shift of the polar angle of 0 to 60 degrees is measured as ΔιΓν' = 0.11. Since the optical film F6 does not have reverse wavelength dispersion, Au'v' turns slightly larger, and the color shift is not improved. -66 - 200946570 [Comparative Example 2] &lt;Production of laminated optical film (F7)&gt; The same procedure as in Example 1 was carried out except that the cyclic olefin resin (A2) and the vinyl aromatic resin (B4) were used. An unstretched laminated optical film roll composed of an A2 layer (130 μm) / B4 layer (13 Ο μιη). The laminated optical film roll was stretched at a stretching temperature of 13 (TC, stretching ratio of 2.0 times to obtain a laminated optical film (F7) having a thickness of 133 μm. The obtained laminated optical film was in-plane. The phase difference R45 0 = 25 8 nm, R5 5 0 = 25 5 nm, R6 5 0 = 25 2 nm, NZ = 1.45. When the adhesion of the laminated optical film was confirmed, it was found that the layers were easily peeled off. In the dry heat test, the amount of change in phase difference exceeded 5%, and peeling occurred between layers during the damp heat test and the thermal shock test. <Manufacture of polarizing plate (P7) and evaluation of liquid crystal display device> © Using laminated optical film (F7) A polarizing plate (P7) was obtained in the same manner as in Example 1 except that the laminated optical film (F1) was used. The monomer transmittance and the degree of polarization of the obtained polarizing plate were measured and found to be 42.0% and 99.9%, respectively. Using a polarizing plate (P7) instead of the polarizing plate (P1), the same as in the first embodiment, the contrast of the liquid crystal television was measured, and the maximum 値 was measured in the range of omnidirectional and polar angles of 0 to 80 degrees: 5 3 2 0 , the minimum 値: 5. In the 'black display state, when the azimuth angle is 45 degrees, the polar angle 测定 is measured. The color shift of 60 degrees is Au'v' = 0.22. The vinyl aromatic resin (B4) used for the laminated optical film (F7) has a low glass transition temperature, and when stretched, the B4 layer does not have -67- 200946570 A certain phase difference, the laminated optical film does not have a better phase difference, so the front contrast is no problem, but the contrast in the oblique direction is poor, and the color shift is also more [Comparative Example 3] &lt;Laminated optical film (F8 Manufacture of the olefin-based resin (A1) was separately performed by extrusion molding to obtain a film roll (150 μm) of A1. The film of A1 was wound at a stretching temperature of 130 ° C and a draw ratio of 2.0 times. The tenter was stretched transversely to obtain an optical film having a thickness of 7 7 μm. The in-plane retardation of the optical film was R450 = 263 nm, R550 = 260 nm, R650 = 257 nm, NZ = 1 38 〇, then, the alignment film was used for the polymerization. The imine solution was coated on a PET film with a wire rod, dried at 80 ° C for 1 minute, and then dried at 100 ° C for 2 minutes, and then rubbed against the surface of the polyimide film. The polymerizable nematic liquid crystal solution is coated on the alignment film by a metal wire rod. After drying at 1 ° C for 2 minutes, UV was irradiated with 700 mJ/crn 2 using a high pressure mercury lamp to polymerize the polymerizable nematic liquid crystal compound. The liquid crystal cured film was peeled off from the PET film, and the phase difference was measured, R450 = 1 74 nm, R550 = 1 65 nm, R650 = 1 59 nm, NZ = 1.02 » Thickness 2 μιη. By using an acrylic transparent adhesive film, the obtained liquid crystal cured film is bonded to the optical film in a state in which the optical axis direction (the maximum refractive index direction in the plane) is orthogonal to each other, thereby obtaining a laminated optical film (F8). . The in-plane retardation of the laminated optical film produced was R45 0 = 89 nm, R5 50 = 9.5 nm - 68 - 200946570, R650 = 98 nm, ΝΖ = 3.80. As a result of the environmental test, under the condition of 3, the change amount of the phase difference was 2.3% at the maximum, and the appearance did not change. &lt;Production of Polarizing Plate (Ρ8) and Evaluation of Liquid Crystal Display Device&gt; The same procedure as in Example 1 was carried out except that the laminated optical film (F8) was used instead of the laminated optical film (F1), and the liquid crystal hardened layer was faced to the polarizer side. Polarizer (Ρ8). The monomer transmittance and the degree of polarization of the obtained polarizing plate were measured and measured by 41.9% and 99.9%. In the same manner as in the first embodiment, the comparison of the liquid crystal television was carried out except that the polarizing plate (Ρ8) was used instead of the polarizing plate (Ρ8), and the maximum 値: 4900 was measured in the range of omnidirectional and polar angle 〇 80 degrees.値: 1 5, no unevenness was found by visual inspection. Further, in the black display state, when the azimuth angle is 45 degrees, the color shift of the polar angle of 0 to 60 degrees is measured as Au'v' = 〇.15. The in-plane retardation R450, R5 50, and R65 0 of the F8 film laminated with the liquid crystal cured film are reverse wavelength dispersibility, and there is no problem. However, since the phase difference in the oblique direction is constant, the NZ coefficient is not in an ideal range. Therefore, the frontal contrast 〇 is no problem, but the diagonal contrast is poor and the color shift is also large. [Reference Example] The phase difference film previously attached to the liquid crystal television was peeled off from the polarizing plate, and as a reference, an environmental test was carried out by the above method, and as a result, the amount of change in the phase difference under the condition of 3 was 5%, and the test sample was produced. Quqiao. The results of the evaluation of the laminated optical film are shown in Table 1. The evaluation results of the polarizing plate and the liquid crystal display device and the reference panel characteristics before the peeling of the polarizing plate by the liquid crystal television are shown in Table 2. -69- 200946570 [Table i]

Layer composition () film thickness before stretching (μηι) No R450 (nm) R550 (nm) R650 (nm) R650/ R550 NZ coefficient adhesion environment test Xiangxiang difference) 1 Α1(150)/Β1(140) FI 79 90 96 1.07 1.65 AA Real 2 Al(150)/B2(120) F2 82 92 98 1.06 1.72 AA Application 3 Al(150)/B3(110) F3 81 91 96 1.06 1.74 AA Example 4 Α1(75)/ Β3(110)/Α1(75) F4 84 93 99 1.06 1.82 AA 5 Α2(150)/Β2(130) F5 82 91 96 1.06 1.72 BA Ratio 1 Α1(150) F6 121 120 119 0.99 1.33 — A Compared with 2 Α 2 (130)/Β4(130) F7 258 255 252 0.99 1.45 CC Example 3 Α1(150) + Liquid crystal cured film F8 89 95 98 1.03 3.80 — B Reference example (LCD TV) C

B1: styrene-maleic anhydride copolymer, Tg = 122 ° C B2 : styrene-maleic anhydride copolymer, Tg = 128 t B3 : styrene-methacrylic acid copolymer, Tg = 129 ° C B4: polystyrene, Tg=102°C

[Table 2] Polarizer contrast color shift No Lamination protection Transmittance polarization (omnidirectional, (azimuth 45 degrees, film film (%) (%) polar angle 〇 ~ 80 degrees) Polar angle 0 to 60 degrees) 1 P1 F1 TAC 42.1 99.9 5260~110 0.03 Example 2 P2 F2 TAC 42.0 99.9 5110~100 0.04 P2, F2 TAC 42.0 99.9 5080~100 0.04 3 P3 F3 TAC 42.0 99.9 5050~100 0.04 4 P4 F4 TAC 41.9 99.9 4890~90 0.05 5 P5 F5 TAC 42.0 99.9 4970~100 0.04 to 1 P6 F6 TAC 41.8 99.9 5160~85 0.11 2 P7 F7 TAC 42.0 99.9 5320 ~ 5 0.22 Example 3 P8 F8 TAC 41.9 99.9 4900~15 0.15 Reference example (before peeling) 4750 to 80 0.09 -70-200946570 [Example 6] &lt;Production of polarizing plate (P1-1) with reflection preventing layer and evaluation of liquid crystal display device&gt; The hard coat layer coating liquid prepared in Preparation Example 2 was The metal bar was applied to one surface of the TAC film which was the same as the protective film used in Example 1, and dried at 8 ° C for 2 minutes, and then irradiated with UV at 600 mJ/cm 2 using a high pressure mercury lamp to obtain a thickness of 4 μm. Hardened film. The coating liquid for the low refractive index layer of φ in Preparation Example 3 was applied to the surface on which the hard coat layer was formed by a metal bar, and dried at 80 ° C for 2 minutes, and then irradiated with UV at 600 mJ/cm 2 using a high pressure mercury lamp. The polymerization was carried out to prepare a cured film having a thickness of 100 nm to obtain a protective film with an antireflection layer. The reflectance of the obtained protective film was measured to be 2.4% or less at 380 to 78 Onm, and it was confirmed that the reflection preventing effect was obtained. Further, Haze is 0.5%, and the total light transmittance is 94.2%. The adhesion preventing layer was excellent in adhesion, and as a result of the environmental test, no change in appearance or peeling of the layer due to the antireflection layer was observed under the conditions of 3.偏 A polarizing plate (P1-1) was obtained in the same manner as in Example 1 except that the protective film of the antireflection layer was used as the protective film of Example 1. Using the obtained polarizing plate (P 1 -1 ), the comparison of the liquid crystal television was measured in the same manner as in the first embodiment, in the range of omnidirectional, polar angle 0 to 80 degrees, maximum 値: 5210, minimum 値: 156, visual No unevenness was found. Further, in the black display state, when the azimuth angle is 45 degrees, the color shift of the polar angle of 0 to 60 degrees is measured as Δ u'v' = 0.04. Moreover, the situation in which the external light is reflected in the black display is reduced. [Example 7] -71 - 200946570 &lt;Production of polarizing plate (P1-2) with reflection preventing layer and evaluation of liquid crystal display device&gt; Coating liquid for antiglare layer and hard coat layer prepared in Preparation Example 4 The metal wire rod was applied to one surface of the TAC film which was the same as the protective film used in Example 1, and dried at 80 ° C for 2 minutes, and then irradiated with UV at 600 mJ/cm 2 using a high pressure mercury lamp to obtain a thickness. A cured film of 4 μm was obtained to obtain a protective film with an antiglare layer. The protective film obtained has a Haze system of 25% and a total light transmittance of 93.0%, and the surface forming the anti-glare layer suppresses the flare of the external light (H-light). The anti-glare layer was excellent in adhesion, and as a result of the environmental test, no change in appearance or peeling of the layer due to the anti-glare layer was observed under the conditions of 3. A polarizing plate (P 1 -2 ) was obtained in the same manner as in Example 1 except that the protective film of the first embodiment was used as the protective film of the anti-glare layer. Using the obtained polarizing plate (P 1 -2 ), the comparison of the liquid crystal television was measured in the same manner as in the first embodiment. In the range of omnidirectional and polar angles of 0 to 80 degrees, the maximum 値: 5200, the minimum 値: 105, visually unexamined. Found uneven. Further, in the black display state, when the azimuth angle is 45 degrees, the color shift of the polar angle of 0 to 60 degrees is measured as Διι'ν' = 0.03. In addition, when the black display is displayed, the external light is reflected, and the situation of the flare is reduced. [Example 8] &lt;Production of polarizing plate (Ρ1-4) with anti-glare layer and evaluation of liquid crystal display device&gt; The laminated optical film (F1) obtained in Example 1 was obtained in Production Example 1. Adjusting the roll-shaped film on one side of the polarizer (the absorption direction of the polarizer -72-200946570 axis is perpendicular to the stretching direction of the laminated optical film), and the vinyl aromatic resin layer faces the polarized light. On the sub-side, the water-based adhesive prepared in Preparation Example 1 was continuously adhered to both, and on the other side of the polarizer, the film roll of the cyclic olefin-based resin (A1) obtained in Synthesis Example 1 (60 μϊη thickness) was used. Using the water-based adhesive obtained in Preparation Example 1, the both were continuously adhered to obtain a polarizing plate (Ρ1-3). The monomer transmittance and the degree of polarization of the obtained polarizing plate were measured and found to be 42.3% and 99.9%, respectively. φ The antiglare layer and the hard coat layer coating liquid prepared in Preparation Example 4 were applied to the surface of the cyclic olefin resin film of the polarizer protective film of the polarizing plate by a metal bar, and dried at 80 ° C for 2 minutes. Using a high-pressure mercury lamp, UV was irradiated at 600 mJ/cm2 to polymerize it, and a cured film having a thickness of 5 μm was produced to obtain a protective film (Ρ1-4) with an antiglare layer. The surface on which the anti-glare layer is formed suppresses the flare of the external light (fluorescent lamp). The protective film was peeled off from the polarizing plate, and the protective film of the antiglare layer and the hard coat layer was evaluated. As a result, Haze was 30%, and the total light transmittance was 93.3%. Further, as a result of the environmental test, no change in appearance or peeling of the layer due to the anti-glare layer was observed under the conditions of 3 ©, and the polarizing plate (P1) was used instead of the polarizing plate (P1), and the measurement was carried out in the same manner as in Example 1. The contrast of the LCD TV is in the range of omnidirectional and polar angle 〇~80 degrees, the maximum 値: 5 2 3 0, the minimum 値: 10 5, no unevenness is observed visually. Further, in the black display state, when the azimuth angle is 45 degrees, the color shift of the polar angle 〜 60 degrees is measured as Au'v' = 0.03. In addition, when the black is displayed, the outside light is reflected, and the situation of the flare is reduced. The antiglare layer previously adhered to the surface of the polarizing plate of the liquid crystal television was peeled off together with the protective film of the -73-200946570 substrate, and an environmental test was performed to confirm that the coating film was slightly yellowed. The evaluation results of Examples 6 to 8 and the evaluation results of the polarizing plates previously attached to the above liquid crystal television are shown in Table 3. [Table 3] Example polarizing plate laminated film protective film contrast (omnidirectional direction, polar angle 0 to 80 degrees) Color shift (azimuth 45 degrees, polar angle 0 to 60 degrees) Substrate film Haze (%) transmittance ( %) Adhesive environment test 6 P1-1 F1 TAC 0.5 94.2 AA 5210~105 0.04 7 P1-2 F1 TAC 25 93.0 AA 5200~105 0.03 8 P1-4 F1 A1 30 93.3 AA 5230~105 0.03 Reference example (LCD TV) AB 4750~80 0.09 *Environmental test: Evaluation by environmental test (change of coating film). [Industrial Applicability] The laminated optical film and polarizing plate of the present invention can be used for various optical parts. For example, there are various liquid crystal display devices such as a liquid crystal television, a liquid crystal monitor, a mobile phone, a car navigation, a portable game machine, a digital information terminal, a liquid crystal projector, an electroluminescence display element, or a transparent conductive film provided with ITO or the like. Control panel, etc. It can also be used as a wavelength plate for an optical system for recording and playback of optical discs, and a film for blocking near-infrared rays used in an optical system such as a camera. -74-

Claims (1)

200946570 X. Patent Application No. 1. A method for producing a laminated optical film, comprising: laminating a cyclic olefin resin and a vinyl aromatic resin by a co-extrusion method to obtain a ring shape a step of laminating the original film of the olefin-based resin layer and the vinyl aromatic resin layer, and uniaxially stretching the original film obtained in the direction orthogonal to the longitudinal direction of the film, and satisfying all A laminated optical film having the characteristics represented by the following formulas (i) to (iii), R450 ^ R550 ^ R650 ( i ) 1 .0 ^ R650/R550 ^ 1.2 (ii) 7 0 nm ^ R 5 5 0 ^ 1 5 0 nm ( iii) [In the above formulas (i) to (iii), R4 50, R550, and R65 0 sequentially represent laminated optical films at wavelengths of 450 nm, 550 nm, and 650 nm. In-plane phase difference]. The method for producing a laminated optical film according to the first aspect of the invention, wherein the cyclic olefin resin is a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2) Composition of copolymer, -75- 200946570 [Chemical 1] [In the formula (1), m is an integer of 1 or more, P is an integer of 〇 or more, and X is independently represented by the formula: -CH = CH- or a formula: -Ch2CH2-, and R1 to R4 are each The independent table is not represented by (a) to (e) or (f) or (g), (a) a hydrogen atom, (b) a halogen atom, or cesium (c) having an oxygen atom, a sulfur atom, a nitrogen atom or a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms in the linking group of a halogen atom, (d) a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms, (e) a polar group, and (f) representing R1 and R2 Or an alkylene group formed by bonding R3 and R4 to each other, and R1 to R4 which are not involved in the bonding are independent of each other and are selected from the above (a) to (e), and (g) represents R1 and R2, R3 and R4. Or R2 and R3 are bonded to each other -76-200946570 The monocyclic or polycyclic hydrocarbon ring formed by the aromatic ring or the non-fragrance ring or the R1 to R4 groups participating in the aforementioned bonding are independent of each other and are selected from the above (e)] (2) [In the formula (2), the Y system is represented by the formula: -CH = CH_ or the -CH2CH2 represents the base * R5 to R8 are each independently represented by the following (a) ~ ( e) indicates (f) or (g), (a) An atom, (b) a halogen atom, (c) a substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms having an oxygen atom, a sulfur atom, a nitrogen atom or a ruthenium linkage group, (d) a substituted or unsubstituted carbon atom a hydrocarbon group (e) having a number of 1 to 30, (f), R5 and R6, or R7 and R8 bonded to each other to form a group, and R5 to R8 which are not involved in the bonding are independent of each other, and (a) to (e) are selected. (g) indicates that R5 and R6, R7 and R8, or a monocyclic or polycyclic hydrocarbon ring or a heterocyclic ring of a heterocyclic ring or a non-aromatic ring formed by R6 and R7 are independent of each other. Indicated from the aforementioned ring, not The formula or the atom of the atomic alkane from the aforementioned mutual bond ring, not -77- 200946570 (e)]. 3. The method for producing a laminated optical film according to the first aspect of the invention, wherein the vinyl aromatic resin is a styrene-(meth)acrylic acid copolymer. 4. The method for producing a laminated optical film according to claim 1, wherein the vinyl aromatic resin is a styrene-maleic anhydride copolymer. 5. The method for producing a laminated optical film according to the first aspect of the invention, wherein the cyclic olefin-based resin layer is in direct contact with the vinyl aromatic resin layer. 6. The method for producing a laminated optical film according to the first aspect of the invention, wherein the cyclic olefin resin and the vinyl aromatic resin satisfy the relationship of the following formula (iv), | TgA ( °C ) - TgB ( ° C ) I ^20 ( ° C ) ( iv ) [wherein, TgA represents a glass transition temperature of a cyclic olefin resin, and TgB represents a glass transition temperature of a vinyl aromatic resin]. 7. The method for producing a laminated optical film according to claim 1, wherein the glass transition temperature (TgA) of the cyclic olefin resin and the glass transition temperature (TgB) of the vinyl aromatic resin are both 110 ° C. the above. 8. A laminated optical film characterized in that a cyclic olefin-based resin layer is in direct contact with a vinyl aromatic resin layer, and is laminated, and satisfies all the characteristics of the following formulas (i) to (iii). R45 0 ^ R5 5 0 ^ R65 0 ... ( i ) 1 .0^ R65 0/R5 5 0 ^ 1.2 ... ( ϋ ) 200946570 7 0nm ^ R5 5 0 ^ 1 5 Onm ... ( iii ) [In the above formulas (i) to (iii), the R4 50, R550, and R650 sequences indicate the phase difference in the laminated optical thin surface at wavelengths of 450 nm, 550 nm, and 650 nm]. 9. If the laminated optical film of claim 8 is the following formula (v), 10 SNZ S 3.0 ... ( v ) 〇 [in the above formula (V), NZ is NZ = (nx-nz) / (ηχ· represents a coefficient at a wavelength of 550 nm, where η χ represents the maximum refractive index in the plane of the optical film, and ny represents the direction orthogonal to η 在 in the laminated optical plane The refractive index, nz represents the refractive index in the thickness direction of the laminated optical film orthogonal to ηχ, but when the average refractive index of the laminated optical film is Nave, Nave=( nx + ny + nz) /3 , Nave In the laminated optical film, the average refractive index of each of the cyclic olefin-based resin layer and the ethyl aromatic resin layer is β-averaged by the thickness ratio. 10. Laminating optics according to claim 8 The film, the glass transition temperature of the olefin-based resin and the conversion temperature of the vinyl aromatic resin glass are all above 1 〇 ° C. 11. A laminated optical film characterized by the layer of claim 1 The method for producing a conjugated optical film. 12. A polarizing plate characterized by a patent application scope The laminated optical film according to any one of the items 8, wherein the film is formed on at least one side of the photoreceptor or the adhesive layer. The film is satisfied by the ny). The polarizing plate of the invention of claim 12, wherein the ruthenium contains at least one layer selected from the group consisting of an antireflection layer and an antiglare layer. 1 4. A liquid crystal display device characterized by having a polarizing plate of claim 12 of the patent application. A liquid crystal display device characterized by having a polarizing plate of claim 13 of the patent application. 200946570 : Refers to the pattern representation of the present generation /-N fixed one or two refers to Λν ΓΧ None • · Ming said Single No Jane • No. No. Figure No. 表 VIII. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: None