TW201128240A - Optical sheet and backlight unit using the same - Google Patents

Abstract

The present invention aims to provide an optical sheet capable of preventing adhering to other optical sheets laminated on inner side, as well as preventing causing damage to surfaces of other optical sheets. The present invention discloses an optical sheet, which is equipped with a transparent substrate layer, an optical layer laminated on one side of the substrate layer, and an anti-adhesion layer laminated on the other side of the substrate layer, wherein the entire surface of the anti-adhesion layer has a fine uneven shape. The present invention is characterized in that the anti-adhesion layer is formed by coating and curing a curable composition including a first component, a second component and a third component which are phase separated, wherein the first component, the second component and the third component are respectively and independently selected from at least one type of a group composed of polymer, oligomer and monomer.

Description

201128240 VI. Description of the Invention: [Technical Field] The present invention relates to an optical sheet having a high anti-stick function and an anti-damage function and a backlight unit using the same. [Prior Art] The liquid helium display is widely used as a display device for a screen such as a television or a personal computer. The general type of the device is a direct-view type that directly displays the face and a projection type that displays the image projected on the screen. The direct-view type liquid crystal display device has a transflective type that transmits light through a backlight, a back-light type that uses reflected light such as natural light or an indoor light without a backlight, and a transflective type that becomes a reflective type in a bright place and a transmissive type in a dark place. . On the other hand, the projection type liquid crystal display device has a rear projection type (checking coffee) for displaying a screen projection image in the display (met) after the image is projected on the front screen. Today, transmissive liquid crystal display devices in direct-view and direct-view types are commonly used in the mainstream. In the transmissive liquid crystal display device, a backlight having a liquid crystal layer irradiated from the back surface is widely used, and a backlight unit such as an edge illumination type (side light type) or a direct type is provided on the lower surface side of the liquid crystal layer. The backlight unit 2 of the Yanhai edge illumination type is generally provided with a lamp 21 as a light source, a square plate-shaped light guide plate 22 disposed at an end portion along the lamp 21, and a laminated layer on the light guide plate. A plurality of optical sheets 23 on the surface side of 22. The light source lamp u uses a led (I-optical body) or a cold cathode tube. However, in view of miniaturization and energy saving, LED Q is now commonly used. The optical sheet 23 has diffusion, refraction, etc. for transmitted light. The optical function 'is used (1) a cymbal sheet 24 disposed on the surface side of the light guide plate 201128240 22 and having a function of refracting toward the normal direction side; and (2) disposed on the surface side of the prism sheet 24, and mainly having light A diffusing function light diffusing sheet 25 or the like. Further, although not shown, an optical sheet 23 such as a light diffusing sheet or a cymbal sheet is disposed in consideration of the light guiding characteristics of the light guiding plate 22 or the optical function of the optical sheet included in the optical sheet 23. Backlight unit. The function of the backlight unit 20 will be described. First, the light incident on the light guide plate 22 from the lamp 21 is reflected by the reflection point or the reflection sheet (not shown) on the inner surface of the light guide plate 22 and the respective side surfaces, and is emitted from the surface of the light guide plate 22. The light emitted from the light guide plate 22 is incident on the cymbal sheet 24, and is refracted toward the normal side by the crotch portion formed on the surface of the plurality of ridges, and is emitted from the surface. Thereafter, the light emitted from the surface of the cymbal sheet 24 is incident on the light-diffusing sheet 25, diffused, and emitted from the surface, thereby illuminating the entire surface of the liquid crystal layer (not shown) above. As shown in FIG. 2(b), the light diffusion sheet 25 which is disposed so as to overlap the surface of the cymbal sheet 24 includes a transparent base material layer of synthetic resin, an optical layer 27 laminated on the surface of the base material layer 26, and The layer 28 is layered in the base layer %. The optical f 27 is generally configured to have a structure in which the resin beads 3G are dispersed in the adhesive 29, and the light diffusion work is performed for the transmitted light. The anti-adhesion layer 28 has a small amount of dispersed in the adhesive 31. The structure of the pellet 32 and the lower portion of the bead 32 from the inner surface of the adhesive 3丨. The anti-adhesion layer 28 prevents the following problem: the inner surface of the light-diffusing sheet 25: the surface of the optical sheet or the like (the sheet 24) is adhered, that is, adhered, disturbed, or rolled into a roll shape in the manufacturing step. Adhesion (attachment) occurs during storage. Furthermore, since the apex of the crotch portion is not an acute angle, but the formation of 4 201128240 has a plurality of planes or curved surfaces, the surface side of the crotch panel 24 and the inner surface side of the light diffusion sheet 25 are in contact with each other in a strip-like manner. Adhesion occurs. The beads 32 dispersed in the anti-adhesion layer 28 of the light-diffusing sheet 25 are advantageously made of acrylic beads or the like. Because of the hard texture, the beads 32 protruding from the inner surface sometimes accumulate in the light diffusion. The surface (the apex portion of the crotch portion) of the cymbal sheet 24 or the like on the inner surface side of the sheet 25 is damaged. Further, the beads 32 dispersed in the anti-adhesion layer 28 come off due to contact with the apex of the crotch portion of the crotch panel 24, and the dropped portion of the bead 32 also causes the damage. Damage to the optical sheet causes uneven illumination of the liquid crystal display device. Therefore, in order to prevent damage to the enamel sheet or the like on the inner surface side or other optical sheets or light guide sheets, an optical sheet having a damage preventing layer on the inner surface thereof is developed (refer to Japanese Patent Laid-Open Publication No. 2004-85626, or the like). In the form of a liquid, it is applied and hardened to form a fine concavo-convex anti-adhesion on the surface. The composition is a green curable resin (see JP-A No. 1 825 19). In the optical sheet in which the damage preventing layer is provided as described above, there is also a fine bead which is used to prevent the other optical sheets from being damaged. Moreover, when the unevenness is formed on the surface by the composition of the anti-blocking-curable resin, there is a problem in that the surface is too fine and the anti-adhesive property is insufficient (if the optical sheet is improved) When the coating film of the anti-adhesive hardenable resin composition is thinned, the unevenness formed by the film becomes finer and finer, and the anti-sticking property is further insufficient. Patent Document 1: Japanese Patent Publication No. 2004-85620 No. 201128240 Patent Document 2: JP-A-2007-182519 [Summary of the Invention] This publication was developed in accordance with these problems. It is an object of the invention to provide an optical sheet which can prevent adhesion to other optical sheets or the like laminated on the inner surface side and prevent damage to surfaces such as other optical sheets, and the use of the optical sheets to prevent illuminance unevenness and interference fringes caused by damage. A high quality backlight unit. In order to solve the above problems, an optical sheet comprising an optical layer in which a vapor-permeable substrate is laminated on one side of a base material layer and an anti-adhesive layer laminated on a base material layer K are provided. The entire surface of the adhesive layer has a fine concavo-convex shape, and the anti-adhesive layer is cured by applying a curable composition containing the first component, the second forming blade, and the third component which are phase-separated. And formed, . The first component, the second component, and the third component, such as Hai, are independently selected from at least one of the group consisting of a polymer 'oligomer and a monomer. The HI optical sheet has an anti-adhesive layer, and the anti-adhesive layer is coated with the first component, the second component, and the third component, including the phase separation component, and the first component, the second component, and the third component are respectively It is formed independently from a hardening composition which is at least a group of a polymer, an oligomer, and a monomer, and hardens it. The unevenness of the surface of the dot-preventing layer is effectively formed by applying and hardening the curable composition containing the three components. Therefore, the optical sheet can be made to adhere to the door and can be preferably prevented from sticking to the side of the anti-adhesive layer. Further, the optical sheet can prevent damage caused by the unevenness of the surface of the release layer. Further, the optical sheet is formed by coating a hardened composition containing the three types of 201128240 and hardening it, and forming a release layer thinner even if the thickness of the coating of the curable composition is made thinner. In the case of the case, sufficient irregularities can be formed, and as a result, sufficient anti-sticking performance can be ensured. Thus, the optical sheet can make the thickness of the release layer thin, thereby preventing the decrease in brightness caused by the provision of the anti-adhesion layer. Further, by coating and hardening such a curable composition, an anti-adhesion layer having a desired preferable thickness and surface roughness can be formed. In the above curable composition, the first component is preferably a polymer, the second component is preferably a monomer or an oligomer, and the third component is preferably a soap or oligomer having a polar group. In the optical sheet, the above-mentioned components are used as the curable composition, and in particular, the polymer component and the monomer or the polymer component having a polar group are used in combination, whereby the unevenness of the surface of the anti-adhesive layer can be increased. As a result, the anti-stick property of the optical sheet can be improved. In the case where the third component is a monomer or oligomer having a polar group, the polar group is preferably selected from the group consisting of an amine group, a trimeric isocyanate group, a gland group, a carbonate group, and a guanamine group. At least one of a group consisting of an ester group, a carboxyl group, an acid anhydride group, an epoxy group, an imido group, and an amine group. By selecting these functional groups as the polar groups of the monomer or oligomer of the third component, the unevenness of the surface of the anti-adhesive layer can be made larger, and as a result, the anti-adhesive property of the optical sheet can be further improved. . In the curable composition, the first component, the second component, and the third component may each have a (meth) acrylonitrile group. When the second component, the second component, and the third component each have a (fluorenyl) acrylonitrile group, the respective resin phases formed by the respective components are firmly bonded to each other by a covalent bond formed by polymerization. Therefore, according to the optical sheet, the strength of the release layer is increased and the unevenness of the surface of the release layer is made larger, so that the anti-adhesive property of the optical sheet is further improved. Further, the optical sheet can be made of a resin having a release layer as a resin having a (fluorenyl)-acrylic resin to ensure high brightness. In the above curable composition, the third component is preferably (meth)acrylic acid acetal. According to the optical sheet, it is possible to further increase the unevenness of the surface of the anti-adhesive layer by using a monomer or oligomer having a polar group as the third component by using (mercapto) acrylamide The anti-adhesive properties of the optical sheet. The third component may be a matrix phase, and the quinone 2 component may be a domain phase in the dispersed matrix phase. The 帛1 component may be a granular phase dispersed in the domain phase. The phase is formed by each component of the curable composition. Therefore, it is particularly effective to form the unevenness of the surface of the anti-adhesive layer. Therefore, in the above-mentioned curable composition, the difference between the solubility parameter (SP value) of the second component, the second component and the component is preferably 〇·3 or more. Since the sp values of the respective components of the curable composition have a difference in a certain value T, the components are effectively phase-separated when the curable composition is applied and hardened, and the unevenness of the surface of the anti-adhesive layer is changed. Big. As a result, the S-Huang optical sheet can exhibit high anti-adhesive properties. In the above-mentioned curable composition, the mass of the second component based on the total amount of the first component, the second component, and the third component is preferably 〇丨% by mass or more and 1% by mass or less, and the second component is The mass is preferably 10% by mass or more and 50% by mass or less and the quality of the third component is preferably at least 5% by mass and not more than 8.9% by mass. In the above curable composition, the blending ratio of the three components of 8 201128240 is within the above-mentioned #± edge circumference, and when the curable composition is applied and hardened, it is more effective &amp; 2| + , /θ $ also causes phase separation, and the unevenness of the surface of the anti-adhesive layer becomes larger. As a result, the light-drying sheet can exhibit higher anti-stick properties. Therefore, in the backlight unit for the liquid crystal display device which is introduced to the surface side by the first-line knife which is emitted from the lamp, and the optical sheet is provided on the right side, since the optical sheet has a high degree of damage prevention, - Ρ ^ , Wan Wan Miscellaneous, can prevent the illuminance unevenness caused by other optical films and other damage; i generation of interference fringes can achieve the quality of the liquid crystal display surface t ' and manufacture, transport, preservation Isochronous operation becomes easy. The following concept is used: it means that (a) the diffused layer is specifically conformed to the transmitted light; (b) the layer having the specific optical function by the embossing process, the so-called "optical layer" line. a light-diffusing layer in which a light diffusing agent has a light diffusing agent and is formed substantially uniformly on a fine uneven surface of the surface; and (a) a layer having a triangular columnar shape in a strip shape, and the like The layer is specifically shaped. In addition, "Arithmetic Mean (4) (Ra)" and "10-point Average Thickness (Rz)" are based on the state, "average length of rough curve elements (RSm)" and "root mean square roughness (Rq)" It is based on JIS B0601-20 (H, and the cutoff value is c 2 2 coffee, the evaluation length value is 12.5 _. "Bump hardness", according to the test method 8.4 of JIS K5400, the scratch stroke value. As explained above, The optical sheet of the present invention has sufficient unevenness on the surface of the anti-adhesive layer, and even if the thickness of the anti-adhesive layer is made thinner, it is possible to ensure the formation of the unevenness of the filling, thereby ensuring a high anti-adhesive function for other sheets. It can prevent damage to the surface caused by other sheets, etc. 1. The 201128240 backlight unit of the present invention can prevent uneven illumination or interference fringes caused by damage of optical sheets, light guide plates, etc., and can be manufactured, handled, stored, etc. [Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The optical sheet 1 of Fig. 1 includes a base material layer 2 and a layer of the base material layer 2 - The optical layer 3 on the front side, and The anti-adhesive layer 4 is layered on the other side of the substrate layer 2. The substrate layer 2 must be transparent to light, and thus formed of transparent, especially colorless, transparent glass or synthetic resin. The resin is not particularly limited, and examples thereof include polyethylene terephthalate, polyethylene naphthalate, acrylic resin, polycarbonate, polystyrene, polyolefin, and cellulose acetate. Among them, polyethylene terephthalate, which is excellent in transparency and high in strength, is preferably a polyethylene terephthalate having improved properties. The thickness (average thickness) of the layer 2 is not particularly limited, and is, for example, 10 &quot;m or more and 500 (four) or less, preferably 35 or more and 25 m or less; particularly preferably 50 or more m) or more. If the thickness of the base material layer 2 is less than the above range, the valley is liable to be curled when the composition for forming the optical layer 3 is applied, and the operation becomes difficult, such as the thickness of the substrate layer 2 Beyond the above range, the brightness of the second through is reduced, and the thickness of the backlight unit is wide. The requirement for the thinning of the device is reversed. The degree of adhesion and the liquid crystal display layer 4 have a fine uneven shape 7 on the entire surface. Therefore, Right Moon et al. 10 201128240 The optical sheet 1 is superposed on other optical sheets such as a cymbal sheet. On the surface such as the light guide plate, the convex portion of the fine uneven shape 7 abuts on the surface of the other optical sheet, and the entire inner surface of the optical sheet 1 does not come into contact with other optical sheets or the like. The adhesion of the optical sheet or the like is suppressed, and the illuminance unevenness of the screen of the liquid crystal display device is suppressed. <The curable composition for forming an anti-adhesive layer> The anti-adhesive layer 4 is coated with a second component containing phase separation. The curable composition of the second component and the third component is formed by curing. According to such a hardenable composition, irregularities on the surface of the release layer are effectively formed. Further, by coating and hardening such a curable composition, an anti-adhesion layer having a desired thickness and surface roughness can be formed. The [component, the second component, and the third component included in the curable composition are phase-separated by application and hardening. Since the three kinds of components are separated, and the surface of the anti-adhesive layer is formed with sufficient irregularities, the optical sheet exhibits a viscous anti-adhesive property. Moreover, due to the occurrence of such phase separation, even when the thickness of the curable composition is (4) and the thickness of the anti-adhesion layer obtained is thin, sufficient irregularities are formed to ensure the anti-adhesive property. . Such a phase separation can be caused by a difference in the properties of each of the knives, such as a raw material when the curable composition is applied to the base material layer, and can also be distinguished from the physical properties of the formed resin at the time of hardening. Caused by. When the three components contained in the X-hardening composition of the vehicle are coated and hardened to be phase-separated, the domain is dispersed in the matrix phase, and the phase phase is dispersed in the phase. Double island structure. By forming such a double island structure, it is also possible to form the unevenness of the surface of the anti-adhesive layer, and the anti-adhesiveness of the optical sheet can be further improved. The curable composition contains at least a component of the group consisting of a component and a monomer, and a third component. The first component and the second component which are independently selected from the group consisting of a polymer and a polycondensation are, for example, a (mercapto)acrylic acid ethylene copolymer, a norbornene resin, and the above polymer are not particularly limited, and a polymer or a polyolefin is used. , polystyrene, phenyl polycarbonate, polyether resin, polyether hard, life A 笊 §, polyurethane, polyoxyalkylene, polydecane, polyamine, polyimine, = 枭 枭 nt nt &gt ; &amp; .w 1 amide resin or fluororesin. (Mercapto) acrylic polymer, which may be exemplified by (meth) and secret 千 丞 丞 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均 均A copolymer of a single bond of a double bond or the like. Examples of the polyolefin include polyethylene, a polypropylene ethylene-propylene copolymer, an ethylene-vinyl acetate copolymer, an ionic polymer, an ethylene-vinyl alcohol copolymer, and an ethylene-ethylene ethylene copolymer. Examples of the polyether resin include polyethylene glycol, polypropylene glycol, and polybutylene glycol. The polyester may, for example, be a polyethylene terephthalate, a polyethylene terephthalate T 2 S, an unsaturated (4), an alkyd resin or the like. The polymer may be a copolymer of structural units having two or more kinds of such polymers, or may be a copolymer composed of structural units of the polymers and monomeric monomers other than the above. Among them, in view of promoting the formation of unevenness, the optical sheet has high anti-adhesive property, excellent transparency, and improved brightness of the obtained optical sheet, and is preferably a (fluorenyl)acrylic polymer, and more preferably ( a copolymer of a methyl)acrylic monomer. One or a plurality of components may be used as the polymer. The lower limit of the weight average molecular weight of the above polymer is preferably 2, more preferably 5, 〇〇〇. On the other hand, the upper limit of the weight average molecular weight of the polymer 12 201128240 is preferably 1 Torr, 〇00, more preferably 50, _. If the weight average molecular weight of the polymer is less than the above lower limit, then the anti-adhesive layer is formed: and the anti-adhesive property is lowered. On the other hand, if the weight of the polymer is more than the above upper limit, the hardness of the unevenness of the release layer becomes high, causing damage to the surface of the optical sheet which is in contact with the release layer. The above oligomer may, for example, be a polymer having a low molecular weight or the like. Preferably, the polymer is a repeating unit having a number of repeating units of 3 to 1 Å and a weight average molecular weight of 8, and the oligo or less may be an octamer having two or more structural units of the oligomers, It may be a copolymer composed of the structural unit of the # oligomer and the other monomer 7G. An oxime or a plurality of components may be used as the oligomer. The above monomer can be used as long as it is a compound having a polymerizable functional group. The functional group of the T polymerization is exemplified by an unsaturated hydrazine, an epoxy group, etc., and a strong bond is formed in the knives or between the components, and the strength of the anti-adhesive layer is enhanced, and 5' is preferably an unsaturated double bond. "In the middle, it is enhanced by the "dry film" and 5, especially the (曱基) acrylonitrile base. Moreover, in terms of the surface of the anti-adhesive layer, the monomer is preferably polyfunctional. The polyfunctional monomer may, for example, be a (meth)acrylic acid such as a polyhydric alcohol, or the like, and specifically, hexamethylene bis(indenyl) acrylate, neopentyl Bifunctional (meth) acrylate such as alcohol di(meth) propylene hydride or ethylene glycol di(decyl) acrylate; trihydroxy propyl propane tris(fluorenyl) acrylate 'neopentitol III (fluorenyl) acrylic acid vinegar, tris(decyl)acrylic acid vinegar, etc. trifunctional (fluorenyl) propylene sulfonium S 曰, neopentyl alcohol tetrakis(mercapto) acrylate, di-trimethyl methacrylate a tetrafunctional (meth)acrylic acid such as a tetrafunctional (fluorenyl) acrylate such as tetrakis(fluorenyl) propylene S?, and a penta-acid (meth) acrylate such as dipentaerythritol 5 (A13 201128240) acrylic acid vinegar; Dipentaerythritol hexa(methyl) acrylate vinegar, sorbitol hexa(methyl) acrylate acid, hexafunctional (meth) acrylate vinegar, etc. The monomer may also be in the molecule a functional group other than a polymerizable functional group, such as an amine vine group, a trimeric isomeric acid group, an gland group, a carbonic acid group, an amidino group, a brewing group, a carboxyl group, a squara group, an imido group, an amine group Further, the monomer may have acicular substances such as gas and chlorine, and atoms such as sulphur, sulfur, and the like. The first component, the quinone 2 component, and the third component included in the curable composition are preferably. In order to have mutually reactive functional groups, each component has such a functional group, and the strength of the anti-adhesive layer is increased by the weight of the anti-adhesive layer, which can improve the durability of such a binding reaction. Examples of the combination of the group include &amp; m + a saturated group and an ethylenically unsaturated group, a functional group having an active gas (a base group, an amine group 'hydrosulfanyl group, a fluorenyl group, etc.) and an epoxy group, and an active gas. Functional group and heterologous acid vinegar group, functional group having active hydrogen and functional group having active hydrogen, sulphuric acid group and sylvestreol group, sinyl alcohol group and epoxy group, active methylene group and propylene group Base, slogan sputum base and rebel base, etc. Among them, the generated bond is firm and promotes the uneven shape of the surface of the anti-adhesive layer In terms of the aspect, the functional group which is preferably mutually reactive is a combination of an ethylenically unsaturated group and an ethylenic unsaturated group. The ethylenically unsaturated group is not particularly limited, and the brightness of the optical sheet further obtained is It is preferred that the (meth) propylene oxime component, the second component and the third component all have an ethylenically unsaturated group. Hunting this 'anti-adhesive layer of strong Yan pushes the cow step', and further promotes anti-adhesion Layer::: Concavity and convexity. Further, it is particularly preferable to be a component of the first component and a component of the third knife, and a (meth)acrylonitrile group. By the three kinds of the curable composition, 14 201128240, all of the functional A, the second and the fourth, and the soil are used to improve the strength and the formation of the anti-adhesive layer, and the obtained optical can be improved. The brightness of the film. In the composition of the composition, it is preferable that the component i is a polymer, the second component is a monomer or an oligomer, and the component of the ruthenium 3 is a monomer or an oligomer. In the case where the components of the composition (4) are such a combination, the matrix phase formed by the 成2 knives and the third constitutive phase, and the domain phase formed in the matrix phase are formed and dispersed by the first component. The granular phase in the domain phase. By using the above-mentioned components as the components of the curable composition, the unevenness of the surface of the anti-adhesive layer is more effectively caused, thereby further improving the anti-adhesive property of the obtained optical sheet. Although it is not clear that the use of these components in the curable composition causes the formation of irregularities on the surface of the anti-adhesive layer more effectively, the reason is considered to be that the polymer of the m component is formed into a granular phase in the following cases. The monomers and oligomers of the two components and the third component are each polymerized to cause shrinkage or the like, and they are acted upon in an additive manner to effectively cause unevenness formation. Further, in the curable composition, it is particularly preferred that the second component is a polymer, the second component is a monomer or an oligomer, and the third component is a monomer or a polymer having a polar group. When the components of the curable composition are such a combination, the second component is dispersed in the matrix phase by applying the curable composition and hardening the third component to the base component. In the domain phase, the first component becomes a granular phase dispersed in the domain phase. The monomer or oligomer of the third component has a polar group, whereby the phase separation at the time of coating or hardening of the curable composition is further promoted, so that the unevenness is made larger, and the anti-adhesive property of the obtained optical sheet is enhanced. The polar group is not particularly limited as long as it is an organic group having a higher electronegativity, such as ruthenium, osmium, sulphur, or halogen, and the like, and examples thereof include an amine Sa-based-isocyanate group and a urea-based carbonic acid group. Ester group, decylamino group, ester group carboxy 'acid needle group, ether group 'epoxy group, imino group or amine group, and the like. Among them, the phase separation of the curable composition during coating and hardening is particularly effective, and the obtained optical sheet "excellent anti-adhesive property" t is preferably an amine oxime group or a dimeric isocyanate group. Specific examples of the monomer or oligomer having a polar group in the third component include (mercapto)acrylic acid acetoacetate, epoxy (meth)acrylate, and polyester (fluorenyl) acrylate. Among them, the coating of the curable composition and the phase separation at the time of hardening are particularly effective, and the unevenness of the surface of the anti-adhesive layer becomes large, and the obtained anti-adhesive property of the optical sheet is particularly excellent. Mercaptoacetate. (Mercapto) acrylamide g is a monomer or oligomer having two functional groups of an amine g group (-N-C0-0-) and a (meth) acryl fluorenyl group in one molecule. . The (meth)acrylic acid amide can be obtained, for example, by reacting a polyfunctional isocyanate, a compound having an active hydrogen such as a (fluorenyl) propylene group and a hydroxyl group or an amine group, and optionally a polyol. Polyfunctional isocyanates can be enumerated:

Hexamethylene diisocyanate, Toluene diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate , isophorone diisocyanate, Lysine diisocyanate, Trimethyl hexamethylene diisocyanate, cyclohexylmethane diisocyanate, fluorenyl ring Hexane diisocyanate, isopropylidene bis(4-cyclohexyl isocyanide 201128240 acid ester) (iS〇pr〇PylidenebiS(4-CyCl〇hexylisocyanate), and hexamethylene diisocyanate S. Further, a modified product such as a polyfunctional isocyanate-derived monourea or a trimeric isocyanate-containing polyfunctional isocyanate trimer may be used. Examples of the compound having a (fluorenyl) acrylonitrile group and an active hydrogen include (mercapto) hydroxyalkyl (meth) acrylate such as 2-hydroxyethyl acrylate; and ethylene glycol mono(anthracene acrylate, propylene glycol mono(A) Polyacrylate, diethylene glycol mono(meth)acrylate, dipropylene glycol mono(meth)acrylate, polyethylene glycol mono(meth)acrylate, polypropylene glycol mono(decyl)acrylate, etc. Alkanediol mono(meth)acrylic acid vinegar; the internal S is intended to be modified (mercapto) acrylic acid by vinegar, etc. The various uses may be mentioned as follows: ethylene glycol, propylene glycol, W hexanediol, diethyl a polyalkylene glycol such as diol, triethylene glycol, ruthenium-butanediol, i, 8-octanediol decanediol, u〇癸I alcohol or 1,4-cyclohexanediol. Specific examples of the urethane amide include, for example, diphenylmethane disulphonic acid vinegar and ethylene glycol mono(meth)acrylic acid vinegar "reactant, isophorone diisoxamic acid brewing (mercapto) acrylic acid_ 2, the reaction of the reaction, the dimerization of diammonium hexamethacrylate, the reaction of the plastid with the polyethylene glycol mono(indenyl) acrylate, Isohexanoic acid hexamethylene sulfonate _ tripolyisocyanate §|modified plastids and polyhexanol (meth) acrylic acid by the reaction of the S, the isocyanuric acid Ethylene hydride modified A reaction product such as di(meth)acrylate or isophora-pentaerythritol pentaerythritol polyfunctional (meth)propene vinegar, etc., etc., which promotes the formation of irregularities on the surface of the anti-adhesive layer, The solubility parameter (SP value) of each of the 帛1 component, the second component, and the third component included in the curable t-form, the glass transition temperature of the polymer, and the surface tension or molecular weight of 17 201128240 are different. Wait.

The difference in solubility parameter (SP value) between the first component, the second component, and the third component contained in the curable composition is preferably 〇3 or more, and more preferably 〇_4 or more. The sp value of each of the three components has a certain value or more, thereby promoting phase separation, and the unevenness of the surface of the anti-adhesive layer is increased, and the anti-adhesive property of the obtained optical sheet can be improved. The S p value can be calculated, for example, by the method of Fedors. This method is disclosed in p〇lymeR ENGINEERING AND SCIENCE, FEBRUARY, 1974, vol.

Issue 2, p. 147-154 ° When the polymer component is contained in the three components of the curable composition, the glass transition temperature (Tg) is preferably 〇t or more. By the Tg of the polymer component being more than the above, the phase separation of the curable composition is effectively caused. Thus, the anti-adhesive property of the optical sheet obtained is improved. In the case where the polymer component of two or more components is contained in the three components of the curable composition, the difference between the glass transition temperatures (Tg) of the polymer components is preferably HTC or more. More preferably, it is more than 2〇t. The blending ratio of the second component, the second component, and the third component contained in the curable composition is preferably a second component based on the total amount of the first component, the second component, and the third component. The mass ratio is 〇丨% by mass or more and 1% by mass or less, and the mass ratio of the 帛2 component is 1% by mass or more and 5% by mass or less, and the mass ratio of the third component is 4% by mass or more and 89% by mass or less. . Further, the mass ratio of the second component is preferably 5% by mass or more and 5% by mass or less, and the mass ratio of the second component is 12% by mass. /. The above 5 〇 mass% or less, and the mass ratio of the third component is 49.9 mass% or more 87 9 mass% 18 201128240 or less. Further, it is preferable that the first amount "%" 12 &八; is the mass % \ The ratio of the amount of the knives is 20% by mass or more. 5 〇 〇 〇 〇 〇 ' ' ' ' 并 并 并 并 并 第 并 并 并 并 并.丄,,,,,,,,,,,,,,,,,,,,,,,,,,, The quality of the optical sheet 3 is higher than that of the vehicle. By, the concave and the surface of the anti-adhesive layer are less formed, thereby, and the viscous performance of the obtained crucible is improved. Further, as the second component and the third component, the second component and the third component are the monomers or oligomers in which the second component is a monomer or an oligomer, relative to 帛The mass of the third component of the mass of the two components is preferably 1 or more, more preferably #7 VM, particularly preferably 1.3 or more, and the second component of the curable composition is J &lt; brother 2 component and third The blending ratio of the components is such that the phase separation is caused, and the unevenness of the surface of the anti-adhesive layer is increased, so that the anti-adhesive property of the optical sheet is improved. From the viewpoint of easy coating, the curable composition is also in the same manner. Further, a solvent is contained. Examples of the solvent include aromatic fluorene such as toluene and hydrazine; ketones such as acetone, mercaptoethyl _, decyl isobutyl ketone, and cyclohexanone; , ethanol, propanol, isopropanol, butanol and other alcohols; diethyl ether, diisopropyl ether, tetrahydrofuran-decane, phenyl ether, phenyl ether, ethylene glycol dioxime ether, ethylene glycol Ether such as diethyl ether, monoethyl alcohol dioxime ether or propylene glycol monoterpene ether; ethyl acetate, acetonitrile, isopropyl isopropyl acetate, ethylene glycol diacetate, etc.; dimethylformamide-B Base 1 | amine, N• methyl (p- ketone and other guanamine; thiol ruthenium, ethyl (tetra) sulphate, butyl 赛路苏苏, etc.; m, gas imitation and other toothing. Among them, in terms of solubility, aromatic hydrocarbons, ketones, Sa, %, and ethers are preferred, and ketones are particularly preferred. These solvents may be used alone or in combination. 19 201128240 The curable composition is at least When one component has an unsaturated double bond, a polymerization initiator may be further included for hardening. Examples of such a polymerization initiator are: 2. Zhaoji·2-methyl-1-phenyl-propanone· 1-_, 1-trans-based-cyclohexyl-phenylindolemethyl 1-(4-indolylthiophenyl)-2·?-linyl-propyl-1-one, 2,2-methoxy I,2 Duc-ethane-1-one, 2-benzyl-2-dimethylamino-1_(4-morpholinylphenyl'-butyl a photopolymerization initiator such as a ketone; a thermal polymerization initiator such as an azo-based or benzoyl peroxide; and the curable composition may further comprise a hardener; Catalyst, photosensitizer, etc. The lower limit of the average thickness of the anti-adhesive layer 4 is preferably 0.5 &quot; m, particularly preferably 1 &quot; m, and further preferably 15". On the other hand, the average of the anti-adhesive layer 4 The upper limit of the thickness is more than that of Wei Yan/1 . . . ^ 隹 隹 4 4 &quot; m, particularly preferably 3.5 to (7), and further preferably 3 if the average thickness of the anti-adhesive layer 4 is less than the above lower limit, by coating When the following resin, monomer or oligomer is hardened to form the fine uneven shape 7, a sufficiently large and irregular shape is formed. On the other hand, if the anti-adhesive layer *'= drought exceeds the above upper limit, the light absorption amount of the anti-adhesion layer 4 increases, and thus the light transmittance decreases. The lower limit of the arithmetic mean roughness (Ra) of the surface of the release layer 4 is preferably 03 &quot; m, more preferably 0.05 &quot; m, particularly preferably 0.08 /zm. On the other hand, the upper limit of the arithmetic mean roughness (Ra) is preferably 0_3 "and more preferably 〇.25 &quot;m, especially preferably 〇·2 if the anti-adhesive layer 4; When the degree of sag (Ra) is less than the lower limit, the fine unevenness 7. is reduced. Therefore, the portion other than the convex portion is also in contact with the other optical sheet 1 and the like, and the anti-adhesive function is not exhibited. When the arithmetic mean roughness (Ra) of the surface exceeds the above upper limit, the uneven shape becomes 20 201128240, and the surface of the other optical sheets disposed on the inner surface is damaged. The average of the roughness curve elements on the surface of the anti-adhesive layer 4 The lower limit of the length (RSm) is preferably 40 // m, and further preferably 8 〇, particularly preferably 12 〇 &quot; ^ On the other hand, the average length (RSm) of the roughness curve element The upper limit is preferably &lt;m, and further preferably 280 /zm, particularly preferably 24(). The average length (RSm) of the thick chain curve elements on the surface of the anti-adhesive layer 4 is relatively high in the above range. Small value, the micro shape 7 is island-shaped and uniformly formed on the entire surface, so that even if f is flat If the average roughness (Ra) is a relatively small value of the above range, it is also possible to prevent interference fringes due to adhesion (adhesion) to the surface of the light guide plate, etc. ^ Especially to make the arithmetic mean roughness (Ra) When the size is smaller, the average length (RSm) of the coarse I-degree curve elements is set to the above range, and the fine uneven shape 7 is formed in an island shape and uniformly formed on the entire surface, thereby allowing even the anti-adhesion layer and the bracts. When the apex of the strip-shaped prism portion on the surface is in contact with each other, the portion that is abutted and the portion that is not abutted may be formed at ::::

The dry 1 ′ can effectively exert the anti-adhesive function on the surface of the bracts (the side of the crotch side). J If the average length (RSm) of the roughness surface element is smaller than the above: ', there will be other optical sheets that will abut because the size of each convex portion becomes smaller.

Si: The flaw of birth damage. Further, in the case where the surface of the cymbal sheet (the surface on the crotch side) is in contact with the ribs, the portion of the apex of the strip-shaped prism portion which is in contact with the anti-four (4) 4 does not abut against the portion which is not abutted. If the average length (RSm) of the rough sugar surface element exceeds the upper limit of 21 201128240, the fine uneven shape is not formed sufficiently, and the surface other than the convex portion is in contact with the surface of another optical sheet or the like. This creates a ripple of interference fringes. The lower limit of the ten-point average roughness (Rz) of the surface of the anti-adhesive layer 4 is 0.2 μm, more preferably 〇.3, and further preferably 〇4 to the claw. On the other hand, the upper limit of the ten-point average roughness (Rz) is preferably i 4 to the claw, particularly preferably 1 to m, and further preferably 〇 8 v ^ if the surface of the anti-adhesion layer 4 is 10 When the degree of sag (RZ) is less than the above-described lower limit, there is a possibility that the portion other than the convex portion abuts on the surface of the other optical sheet or the like in the fine uneven shape 7 on the surface of the release layer. On the other hand, if the ten-point average roughness (RZ) is larger than the upper limit, the uneven shape may become too large (4) to cause damage to the surface of the other optical sheets on the inner surface side. The lower limit of the ratio (Rz/Ra) of the ten-point average roughness (Rz) of the anti-adhesive layer 4 to the arithmetic mean roughness (Ra) is preferably 3, particularly preferably 4, and further preferably Jb 5. On the other hand, the upper limit of the ratio is preferably ι, particularly preferably 9, and further preferably 8. The ten point average degree of the anti-adhesive layer 4 (called the ratio of the arithmetic mean rough degree (Ra) (Rz/Ra) is set to a value smaller than the above range', whereby the optical #i can be hooked to have a height The optical sheet 1 can prevent the damage of other sheets due to the concentration of the force in the convex portion of the fine concavities and convexities (4) 7 of the anti-adhesive layer 4, and can be prevented from being damaged by the other sheets. It is difficult to damage the surface of other optical sheets caused by the protruding portion of the protrusion. If the ratio of the average roughness (Rz) of the (4) 4 to the arithmetic mean roughness (Ra) is less than the lower limit, it is difficult. When the ratio (Rz/Ra) exceeds the above upper limit, the height difference of the portion of the protrusion 22 of the fine concavo-convex shape 7 201128240 becomes significant, and the force concentrates on the m H ^ ± 乂Scythe, this will cause damage to the surface of the other nine months. 〇_〇..., the width of the square root (Rq) limit, preferably the aspect... 〇7...and preferably 0.1 〃 m. The upper limit of the _ &quot; sentence root roughness (Rq) is preferably 0.3 乂0.4 #m, anti-adhesion...1 phase is preferably 0.2 centimeter. According to the optical sheet value: the root mean square roughness (10) of the two surfaces has a smaller than the above range, and the fine concavo-convex shape is formed by the inclined layer. Optical Μ Preventing product (5) “If the root mean square roughness of the surface of the anti-adhesive layer 4; the lower limit, the anti-adhesive function is reduced due to the fine uneven shape 7 ^^^^^^^^^^ On the other hand, if the root mean square roughness (Rq) σ exceeds the above upper limit, there is a steep eight-station in the fine concavo-convex shape 7, and the slanting portion knife having a steep τ I玍 is formed near the slope of the steep mountain The surface damage caused by the light guide plate or the like: the lower limit of the average height (1) of each convex portion of the surface of the adhesive layer 4 is: preferably 0.7 (four)' and further preferably i, and the upper limit of the average height (1) is preferably 3 (four). Further, it is preferably U m ' and more preferably 2. According to the optical sheet, the average height (1) of each convex portion on the surface of the layer 4 becomes smaller as described above: the surface of other optical sheets or the like can be reduced. Damage, and the depth of the damage can be made shallower. If the average height of each convex part If the average height (1) exceeds the above upper limit, the surface of the other optical sheets may be damaged, and the occurrence of the mark becomes deeper. Further, the average is smaller than the lower limit &quot; Height (1) Series (4) Laser Microscope ^ Observed in a given area, calculated by observing the average height of the 16 convex portions of the 77 T-direction 23 201128240 and the upper portion of the convex portion of the anti-adhesive layer 4 The average protrusion is straight backward (the lower limit of the magic is preferably 2, particularly preferably 25 _, and particularly preferably 3) - the average protrusion diameter (the upper limit of r., preferably 5 &quot; claw, especially good 4·5 m, and more preferably 4 v. According to the optical sheet, the average protrusion diameter of each convex portion on the surface of the release layer 4 is made. As described above, it becomes smaller, and damage to the surface of other optical sheets and the like can be reduced and the scar width of the generated flaw can be made narrow. If the average protrusion diameter (η ) of each convex portion is less than the above lower limit, the anti-sticking function cannot be sufficiently exhibited. On the contrary, if the average. When the projection diameter u) exceeds the above upper limit, the surface of the other optical sheet is damaged, and the flaw of the resulting flaw is wide. Further, the average protrusion diameter (ri) is calculated by a laser microscope in a predetermined area (4) by the average protrusion diameter of the convex portions before the height of the plurality of convex portions t observed is high. In addition, the protrusion diameter ") means: convex. The diameter of the section cut at a height of 9〇% (〇9h) of the P-knife (h) is the average of the diameters of the protrusions. The diameter (Few r+mete〇) is different from the interval at which the image is projected by the parallel line of the fixed direction. The lower limit of the average diameter (r2) of each convex portion of the surface of the anti-adhesive layer 4 is preferably 40 _ , particularly preferably 6 () ^, and further, on the one hand, the upper limit of the average diameter (r2) is preferably 2 〇〇... particularly preferably 150 ′ and particularly preferably 12 〇 according to the optical sheet, by way of The average diameter (Q) of each convex portion on the surface of the anti-adhesive layer 4 is as large as described above, and the depth of the flaw when the surface of the other optical sheet is damaged can be made shallower. If the average of each convex portion is straight &; A 八; ^ k Γ 2 ) is less than the above lower limit, then "Filling knife:: anti-adhesive function. Conversely, if the average diameter "2" is deeper than the upper degree. Furthermore, the average 厶 and the flaw is deep. ^ ^ 'only (Γ2) is calculated by using a laser microscope to define the average diameter of a plurality of convex portions in a plurality of convex portions. The diameter of each section is the average of the diameters of the sections cut at the 5% height (〇.〇5h) of the convexity ... degree (1), according to the diameter of the Feiruite (in a certain direction) The lower limit of the height of the convex portion of the anti-adhesive layer 4 (h/r2) is preferably the surface, which is particularly good, and particularly preferably Η&quot;. , 1/120. Moreover, the height is higher than the upper limit of hh/r, 々L 1 (h/r2), preferably ι/ι〇1/30, and particularly preferably 1/60, and then paid佳 • t 住 1/ 1/ 〇 〇 〇 〇 t t t t t t t t 〇 〇 〇 〇 〇 t t t t 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 And; the size of the flaw itself is less suppressed when the damage occurs. If the high yield ratio is one, the anti-adhesive function cannot be fully exerted. If the ratio is (h/r2), the ι_, +. If the upper limit is exceeded, it is easy to cause damage on the surface of the slab, and the size of the flaw itself is enlarged, and he first has the same degree of uniformity (1) by the convex portion of the surface of the anti-adhesion layer 4 (1), Relatively small average protrusion diameter (M^large average diameter (Γ2) and smaller height ratio (h/r2), and the friction of the surface in contact with this layer. According to this type of anti-adhesion layer: 1, due to the anti-adhesive layer 4 and 蛊μ* private &gt; light and other optical sheets or prisms in contact with this layer

25 S 201128240 The friction between the sheets is enhanced to prevent slippage, and as a result, the fine offset generated between the sheets is suppressed, whereby the surface of the other optical sheets or prism sheets can be suppressed from being damaged. The lower limit of the density of the convex portion of the surface of the anti-adhesive layer 4 is preferably __2, particularly preferably __2, and particularly preferably 80 W. Further, the upper limit of the density of existence of the convex portion is preferably 500 / _2, especially Γ / solid / face 2, and particularly preferably a member / job, if the surface of the anti-adhesive layer 4 ^

If the Si storage degree is less than the above lower limit, the anti-adhesive work may not be sufficiently exhibited. On the contrary, if the convex portion has a density greater than that of the above; it causes damage to other optical sheets and the like. Furthermore, the presence of the convex portion: = within the field of view of the magnifying microscope in which the magnification is magnified and observed: The number of boring tools is calculated using the area of the field of view. Average it: the calculation of the above average height (h) 'average protrusion diameter (〇, the height of the surface: Vs and the convex portion in the presence of density) refers to the protrusion of the anti-adhesion layer 4 表·2 vm or more The lower limit of the pencil hardness of the surface of the anti-adhesive layer 4 is 2 盎 梏 眭 基材 基材 基材 基材 基材 基材 基材 % % % % % % % % % % % % % % % % % % % % % % % % % % % % % For the other side, the hardness of the pencil is 45 Η for the formic acid, especially for the sister. Also, when the base material layer 2 is polyparaphenylene... the lower two = fat, the hardness of the surface of the anti-adhesive layer 4 is wrong. The upper limit: =, especially good for ΗΒ. On the other hand, the error at this time is made by the anti-adhesive layer 4 / face main 'extra good 2 Η ° according to the surface of the optical sheet is the above shape and the pencil hardness is effective ^ H ^ is the above-mentioned circumference, and the hard surface of the surface of the adhesive layer 4 is hard to prevent damage to the other sheets of the laminate. If the hardness of the 钇 钇 pen is less than the above lower limit, there is a possibility that the front end becomes brittle due to the fineness of the bump 26 201128240. Breaking, the result is damage to the surface of the light guide plate, etc. Conversely, if the pencil hardness exceeds the above upper limit, there is The fine uneven shape of high hardness itself damages the surface of the light guide plate, etc. The optical layer 3 includes the adhesive 5 and the light diffusing agent 6 dispersed in the adhesive 5. Thus, the light diffusing agent 6 is dispersed in the optical layer 3. Thereby, the light of the optical layer 3 penetrating from the inner surface side to the surface side can be uniformly spread. Further, fine unevenness is formed uniformly on the surface of the optical layer 3 by the light diffusing agent 6 Each of the concave portions and the convex portions of the fine concavities and convexities is formed in a lens shape. The optical lens has an excellent light diffusion function by the lens action of the fine concavities and the light diffusion function, and has the following function: The refracting function of the light refracting toward the normal side and the concentrating function of concentrating the transmitted light in the normal direction. ' , &gt; ά One child, the soldiers are roughly classified into inorganic fillers and organic fillers Specifically, cerium oxide, cerium hydroxide, oxidized sulphate, zinc oxide, strontium sulfide, magnesium silicate: vertical mixture can be used. The specific material of the organic filler can be acrylic resin, dilute nitrile resin, polyamine vinegar, Gather Ethylene, polystyrene, polyamide, nitrile, etc. In the crucible, it is preferably an acrylic resin having a high transparency, particularly preferably a polymethyl methacrylate (PMMA). The polymer composition comprising the base polymer is formed by hardening (crosslinking, etc.), and the light diffusing agent 6 is disposed substantially fixed to the entire substrate layer 2 by the viscosity f: , rL ^ The surface is formed by the formation of the binder 5, and the composition of the composition of the composition of the binder 5 can be appropriately blended, for example, 27 201128240 various modified inorganic fillers, hardeners, plasticizers, dispersants , leveling agent, antistatic agent, ultraviolet absorber, antioxidant, amperage, lubricant, light stabilizer, etc. Next, a method of manufacturing the optical sheet will be described. The optical sheet manufacturing method generally comprises the steps of: (a) producing a coating liquid for an optical layer by mixing the light diffusing agent 6 in a polymer composition constituting the binder '(b) by using the optical layer Applying a coating liquid to the surface of the base material layer 2 to laminate the optical layer 3; (1) producing the curable composition for forming the release layer; and (4) applying the composition for forming the release layer to the base The anti-adhesive layer 4 is laminated on the inner surface of the material layer 2, and is hardened, whereby a fine uneven shape is formed on the surface. The optical sheet 1 has a fine concavo-convex shape having the above-described properties on the entire surface of the anti-adhesive layer. Therefore, it is possible to prevent the convex portion which is formed gently and uniformly from sticking to the light guide plate or the like which is disposed on the other surface side. It can prevent the light guide plate from damage to the surface. Further, even if the optical sheets are rubbed against each other due to curling or heavyness of the optical sheet 1, the mutual damage or adhesion is prevented. Therefore, the backlight unit 20 for a liquid crystal display device shown in FIG. 2(a) includes the lamp 21' light guide plate 22, the light diffusion sheet 25, and the prism sheet 24, and the light emitted from the lamp 21 is dispersed and introduced to the surface side. When the optical sheet 1 is used as the light-diffusing sheet 25, the surface of the ruthenium sheet 24 is reduced by the excellent damage resistance of the optical sheet, and as a result, the illuminance unevenness caused by the damage is reduced, and the quality is improved. . Further, the optical sheet of the present invention is not limited to the above embodiment, and may be, for example, a tantalum sheet (refractive optical sheet), a microlens sheet, or a polarizer sheet. 28 201128240 Reflective polarizer, reflection sheet, phase difference optical sheet The anti-adhesive layer on one side of the opposite side of the anti-adhesive layer, which is resistant to damage and stickiness. Other forms such as sheets and magnified glasses. The present invention will be described in detail by way of an embodiment in which the optical sheet can be optically applied to various forms. [Examples] Hereinafter, the present invention is not limited by the description of the examples. (Synthesis Example 1 [ Synthesis of Acrylic Acid Copolymer (A_l) Containing Unsaturated Double Bonds]) Add propylene glycol monomethyl amide to a 2 L reaction vessel equipped with a stirrer, a thermometer, a gas, and a dropping funnel. The ι 〇〇 mass parts were subjected to nitrogen substitution, and then heated to 110 t. Then, isopropylidene methacrylate _ 5 G mass parts, methacrylic acid 甲 mass parts, and methacrylic acid 3 were simultaneously added dropwise over 3 hours. Look at your secrets _ Λ, &amp; Α a mixture of heavy and complex, and the third butyl vinegar (2-ethylhexanoic acid) as a polymerization initiator ... - (10) ^ 2-ethylhexanoate 〇. 5 parts by mass and 2 parts by mass of propylene glycol monoterpene ether were added and the reaction was carried out for 1 hour after the completion of the dropwise addition. Thereafter, a mixture of a mass fraction of peroxidized (2-ethylhexanoic acid) tert-butyl ester oxime and 5 parts by mass of propylene glycol monomethyl hydrazine was further added dropwise, followed by a reaction at 11 ° C for 30 minutes. In the reaction mixture, a mixture of 0.5 parts by mass of tetrabutylammonium bromide, 3 parts by weight of benzodiazepine G.G and 2 parts by mass of propylene glycol monomethyl hydrazine was added, and the surface was foamed. A mixture of 7 parts by mass of butyl 4-hydroxybutyrate glycidyl ether and 2 parts by mass of propylene glycol monoterpene ether was added dropwise thereto over 1 hour, and further reacted for 5 hours. In this way, an acrylic copolymer (A-1) containing an unsaturated double bond was obtained. The acrylic copolymer (?-1) having an unsaturated double bond had a number average molecular weight of 6,000, a weight average molecular weight of 20,000, an SP value of 9-6, and a Tg of 95 〇C. (Synthesis Example 2 [Synthesis of Acrylic Copolymer (a-2)]) In a 2 L reaction vessel equipped with a stirrer, a thermometer, a nitrogen introduction tube, a cooler, and a dropping funnel, propylene glycol monoterpene ether was added in an amount of 1 part by mass. After nitrogen substitution, 'heated to 110 ° C. Next, a mixture of 50 parts by mass of isobornyl methacrylate, 1 part by mass of decyl methacrylate, and 3 parts by mass of methacrylic acid, and peroxidation as a polymerization initiator were simultaneously added dropwise over 3 hours. A mixture of 3 parts by mass of (2-ethylhexanoic acid) tert-butyl ester and propylene glycol monoterpene ether. After completion of the dropwise addition, the reaction was further carried out at 11 ° C for 30 minutes. The acrylic copolymer (A_2) was obtained in this manner. The acrylic acid copolymer (A-2) had a number average molecular weight of 3,000, a weight average molecular weight of 5,500, an SP value of lo.i, and a Tg of 117. (: Synthesis Example 3 [Synthesis of Acrylic Copolymer (a_3) Containing Unsaturated Double Bond]) ° Add propylene glycol to a 2L reaction vessel equipped with a stirrer, a thermometer 'nitrogen introduction tube, a cooler, and a dropping funnel 1 part by mass of methyl ether, after nitrogen substitution, 'heated to 1st order. Then, 25 parts by mass of isobornyl methacrylate, 1 part by mass of decyl acrylate, and ethyl acrylate were simultaneously added dropwise at U 3 hours. a mixture of 25 parts by mass of hexyl ester and 3 parts by mass of methacrylic acid, and 0.5 parts by mass of butyl acrylate (2-ethylhexanoic acid) as a polymerization initiator and propylene glycol monoterpene ether 2 〇 a mixture of parts 30 201128240. After the completion of the dropwise addition, the reaction was further carried out at 1 Torr for 1 hour. Thereafter, 0.1 part by mass of tributyl acrylate (2-ethylhexanoic acid) was further added dropwise. After the mixture of 5 parts by mass, the mixture is immersed in n 〇. The reaction is carried out for 3 minutes. In the reaction mixture, 0 _ 5 parts by mass of tetrabutylammonium bromide is added, and hydroquinone is added. 〇_〇 3 parts by mass and 2 parts by mass of propylene glycol monoterpene ether After the mixture was foamed, the mixture of 5 parts by mass of glycidyl methacrylate and 2 parts by mass of propylene glycol monomethyl ether was added dropwise over 1 hour, and further reacted for 5 hours. A saturated double bond acrylic copolymer (A-3). The unsaturated double bond-containing acrylic copolymer (A-3) has a number average molecular weight of 43 Å, a weight average molecular weight of 9000 'SP value of 10.1, and a Tg of 6 (: Synthesis Example 4 [Synthesis of Acrylic Copolymer Containing Unsaturated Double Bond (8_4)]) Add in a 2L reaction vessel equipped with a stirrer, a thermometer, a nitrogen introduction tube, a cooler, and a dropping funnel. 1 part by mass of propylene glycol monoterpene ether, after nitrogen replacement, 'heated to 11 (TC. 荖, w?, 吐八1 丧者' was added dropwise by isopropyl methacrylate 50 hrs for 3 hours詈 詈, 田仗二&amp; ^ Berry, 1 part by mass of methyl methacrylate and 3 parts by mass of methacrylic acid, ruthenium, ruthenium, and peroxidation as a polymerization initiator ( 2-ethylhexanoic acid) second butyl sputum &lt; a mixture with 20 parts by mass of propylene glycol monomethyl ether. After the drop, the gentleman hit, the ^, the end of the ring, and then the reaction under U (rc for 1 hour. After that, then drop as I, _a piece &quot; / the same After adding a mixture of 0.1 parts by mass of (2-ethylhexanoic acid) tert-butyl ester and propylene glycol monomethyl hydrazine and hydrazine octahydrate, a mixture of 5 parts, at 110 ° C The reaction was carried out for 30 minutes. 31 201128240 To the reaction mixture, a mixture of 5 parts by mass of tetrabutylammonium bromide, 0.03 parts by mass of hydroquinone, and 2 parts by mass of propylene glycol monomethyl ether was added to foam the air. Then, a mixture of 5 parts by mass of glycidyl methacrylate and 2 parts by mass of propylene glycol monomethyl ether was added dropwise thereto in an hour, and further reacted for 5 hours. In this way, an acrylic copolymer (A-4) having an unsaturated double bond was obtained. The acrylic copolymer (A_4) having an unsaturated double bond had a number average molecular weight of 1,700, a weight average molecular weight of 25 Å, an SP value of 10.4, and a Tg of 121 °C. (Synthesis Example 5 [Synthesis of Amino Acid (c-1)]] In a 2 L reaction vessel equipped with a stirrer, a thermometer, and a cooler, a trimer isocyanate modified with hexamethylene diisocyanate (Wuta Medicine) "Takenate D-170N" manufactured by Industrial Co., Ltd.: isocyanate g-based (-NCO) content: 20.9 mass%) 50 parts by mass, polyethylene glycol monoacrylate ("Blemmer" manufactured by Nippon Oil & Fats Co., Ltd. AE-1 50": Hydroxyl value: 264 mgKOH/g, repeating unit number in ethylene oxide: 3.4) 42 parts by mass, 0.02 parts by mass of dibutyltin laurate and 0.02 parts by mass of hydroquinone monoterpene ether, at 70 The reaction was carried out at ° C for 5 hours. In this way, an acrylate (C-1) is obtained. (Synthesis Example 6 [Synthesis of Amino Acid (C-2)]) In a 2 L reaction vessel equipped with a stirrer, a thermometer and a cooler, 50 parts by mass of toluene and trimerization of hexamethylene diisocyanate were added. Isocyanate modification type ("Takenate D-170N" manufactured by Takeda Pharmaceutical Co., Ltd.) 50 parts by mass, polycaprolactone modified acrylic acid by Espresso ("PLACCEL FA1" manufactured by Daicel Chemical Industry Co., Ltd.) 63 quality 32 201128240 parts, 0.02 parts by mass of dibutyltin laurate and 0.02 parts by mass of 'Phenylene diene" were reacted at 70 ° C for 5 hours. Thereafter, 63 parts by mass of toluene was added to obtain an acrylate (C-2) having a solid content of 50% by mass. The number of repetitions of the caprolactone unit of each of the acrylate monomer residues in the acrylate acrylate (C-2) was 1. (Synthesis Example 7 [Synthesis of Amino Acid (C-3)]) In a 2 L reaction vessel equipped with a stirrer, a thermometer, and a cooler, a toluene-based 50-part straight and stearyl alcohol (Nippon Oil & Fats Co., Ltd.) was added. "NAA-46" manufactured, hydroxyl value: 207) 4.2 parts by mass, heated up to 4 〇t, and completely dissolved stearyl alcohol. Next, 50 parts by mass of a modified form of trimeric isocyanuric acid hexamethylene diisocyanate ("Dingxin D_17〇N" of Takeda Pharmaceutical Co., Ltd.) was added, and the reaction was carried out at 7 (TC for 30 minutes). Further, 179 parts by mass of "ΡΙΑΓ'Γ'ΡΤ Τ7Λ£ FLACXEL FA5" manufactured by Daicel Chemical Industry Co., Ltd., and 2 parts by mass of dibutyltin ruthenium laurate, manufactured by Daicel Chemical Industry Co., Ltd., and Oblique! - Mouth. 忉 0.02 parts by weight of the original phenolic methyl ether, reacted at 7 ° C for 3 hours. After that, add 11 8 negative parts to obtain a solid content of 50 mass / 〇 , 赌日日公#,. 归 归 酉 (C-3). Each of the acrylate monomers in the acetaminophen from the purpose (c_3) [the number of enthalpy of the enthalpy of the example n... Is 3.

Adhesive resin intrusion containing polyester polyol A horse base polymer (Toyo Textile Co., Ltd., Ltd....PL1" oxidized sand (Fuso) "Coronate HX" of the chemical industry (shares ^^,ppon)5 Quality 33 201128240 parts and light stabilizer ("puvAi〇33" of Otsuka Chemical Co., Ltd.) 5 parts by mass of polymer composition 'mixed A coating liquid is prepared by using an "acrylic resin yarn ("M 5" in an average particle diameter of Η ρ" (product of the product), and the coating liquid is prepared by a coating method. 15 g/m2 (solid content conversion) is applied to the surface of the transparent polyester base material layer ("A_43〇〇" of Toyobo Co., Ltd.) having a thickness of ι〇〇&quot; Thus, an optical layer was formed. Further, 0.6 parts by mass of the unsaturated double bond-containing acrylic copolymer (A-1) of Synthesis Example 1 and a monomer having a polyfunctional unsaturated double bond, pentaerythritol triacrylate. Ester (B-1) 41.9 parts by mass of the solution, added dropwise to the inclusion 57.7 parts by mass of acrylamide (CM) of Example 5, 2-mercapto-1-(4-methylthiophenyl)-2-morpholinylpropanone acetonone as a photoinitiator (Ciba_Geigy Co., Ltd.) 7 parts by mass of "IRGACURE 907" manufactured and 3 parts by mass of a solution of hydroxy-cyclohexyl-phenyl ketone ("IRGACURE 184" manufactured by Ciba-Geigy Co., Ltd.), thereby producing methyl ethyl ketone (MEK) and In the mixed solvent of decyl isobutyl ketone (MIBK) (mixing ratio: MEK/MIBK = 1:1 mass ratio), the first, second, and third components are contained so that the nonvolatile content ratio is 50% by mass. The coating liquid was applied onto the inner surface of the base material layer by a roll coating method at 2 g/m (solid content), and was cured by UV irradiation to form an average thickness of 2.8. The anti-adhesive layer of μιη. Thus, the optical sheet of Example 1 was obtained. [Examples 2 to 8] The acrylic copolymer of the first component, the second component, and the first component were used in the respective amounts as described in Table 1 For the type of the monomer or oligomer of the three components, in addition to 34 201128240, the cloth liquid is prepared in the same manner as Dou Youru. In addition to this κ ώ &quot; θ / 丨 丨 此 , , 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学The amine ester (C-3) is entangled in u|_, wide (C'2), 匕3) u mixing ratio (c_2/c_3) = 3/ι (used as a third ratio) In addition, in Example 8, the acrylic acid &quot;CM was used as the third component. When a methyl group [Comparative Example 1] 八二ΓΓ&quot;中中 is used to prepare a coating liquid for forming an anti-adhesive layer, the glycerol acetoacetate (C-1) which is the first component is used. The optical sheet of Comparative Example 1 was obtained in the same manner as in Disc Example 1. [Comparative Example 2] The material rL was coated with a polyglycol as a binder polymer of a base polymer ("Vyi〇n" of Toyobo Co., Ltd.). , colloidal oxidizing knives with an average particle size of 20 nm, the ancient squad, q, Γ, and Fu Ronghua, the "PL-1" of the industry (shares limited), 50 parts by mass, Belize hardener (Nipp〇 n "P〇 〇 〇 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 A coating liquid having a mixed average particle diameter of $ ” 妇 妇 树脂 ( ( ( ( 5 5 5 5 5 5 5 5 5 制作 制作 制作 制作 制作 制作 制作 制作 制作 制作 制作 制作 亲 亲 亲 亲 亲 亲 亲 亲The coating liquid was applied to the inner surface of the base material layer in the form of 2 coffee 2 (solid content), and was cured to form an anti-adhesion layer. Otherwise, the anti-adhesive property was obtained in the same manner as in Example 丨. Optical sheet having an average thickness of the layer. Comparative Example 2 in which the thickness was 3·〇 35 201128240 (Evaluation of characteristics) Using the optical sheets of the above Examples 1 to 8 and Comparative Examples 1 and 2, the resin phase of the surface of the release layer was observed. Separate the structure, measure the arithmetic mean coarseness of the surface properties (Ra), and the average length of the roughness curve elements (RSm) , ten point average roughness (Rz), root mean square roughness () and pencil hardness, and evaluate the front brightness of the optical sheets when incorporated into the backlight unit, and the influence of the optical sheets on other optical sheets (The adhesion, the generation of the interference fringes, and the occurrence of the damage). The results are shown in the following Table 1. The resin phase separation structure on the surface of the anti-adhesion layer was observed with an electron microscope, and evaluated according to the following points. Shape of double island structure (matrix phase_domain phase_granular phase) B: Double island structure (matrix phase_domain phase-granular phase formation) was not confirmed.

Actually incorporated into the edge-lit backlight unit (as the front side of the optical sheet, the brightness and the light of the optical sheet, the sheet H505, and the laminated layer manufactured by Huihe Co., Ltd., which is laminated on the surface of the 36 201128240 light guide plate. In the optical sheet of the embodiment or the comparative example, the light-diffusing sheet was confirmed, and the front luminance, the adhesion to the cymbal sheet, and the interference fringe were confirmed. Regarding the adhesion to the cymbal, the temperature was evaluated based on the following viewpoints. 〇C, the humidity of 90% after being placed for 90 hours. ◎: It is not closed at all. · There is also a part that is dense. △: It is tightly sealed to some extent x: It is firmly sealed. The viewpoint is to visually evaluate the occurrence of interference fringes. ◎: There is no interference fringe at all: If you look at it, you can confirm some interference fringes △: Even if you don't look at it, you can confirm the interference fringe X: The interference fringes can be clearly confirmed. ... Qiao ~ anti-king, the magazine is observed with a microscope to make this layer and Huihe (Company) made of prism sheet H5Q5^ (4) mirror # side of the surface) friction (10): after the refusal of the mirror section = (Evaluation of the heart point of view. Easy to be based on the following ◎: no damage observed at all: a slight damage was observed Δ: damage was observed x: damage was clearly observed. 37 201128240 [I崦] Comparative Example CS (Note 1) 〇» -H PQ 〇vo CN ΓΛ CN ο PQ 1 3207 1 0 &lt;&lt;3 ^-H &lt; Ό d VO On m 〇\ 20000 ώ as inch &lt;N 1 1 1 1 OQ S oo &lt; N 〇X 1 3146 1 XX ◎ Example 〇〇 1 &lt; vo o VO OS OS 20000 ώ 00 inch 卜 N N ό Os 00 » &lt; Ν 〇 9 U&quot;&gt; o 00 o Π: 3202 ◎ ◎ ◎ 卜f*&quot;H 1 &lt; Ό d VO σί os 20000 ώ 〇〇T~H 寸卜&lt;N *—* 1 C-2/C-3 1 ν〇00 1 &lt; in r—Η Ο (NC \ vo o 宕o X 1 3187 1 ◎ ◎ ◎ νο rH 1 c vo ov〇σί Q\ 20000 ώ 00 inch Γ Η 〇Κ ν〇Κ m cs 1 &lt; ΓΛ Ο jn VO o 卜 o X 1 3190 1 ◎ ◎ ◎ iy^ &lt; \〇d 呀d (NI 2500 I 1 0Q 00 inch rs ύ ν〇CO CN t &lt; ο 00 to so 00 d X 1 3222 1 ◎ ◎ ◎ inch ro &lt; od Ό 9000 CQ 00寸 rs rH ό $ CO &lt;N 1 &lt; (Ν ^Η Ο so 00 o 1 3215 1 ◎ ◎ m (N &lt; inch dr·^ d 卜 | 5500 I rH ώ σ\ inch 卜 CN ύ 卜 CO CN 1 &lt; ο »-Η ο Os CN VO o ^T) r*H o X 1 3208 1 ◎ ◎ ◎ &lt;N &lt; inch ov〇a\ C\ 20000 CQ On inch CNCN ό ΓΛ (N 1 &lt; *~Η 1—Η Ο On dv〇d K 3205 ◎ ◎ ◎ » &lt; v〇dv〇 ON ^T) On 20000 ώ Ο) Bu (N ό 卜 yn CO &lt;n 1 &lt; m Ο V〇vo o 00 d K 1 3179 ◎ ◎ ◎ Component of polymer in the hardenable composition (quality Part) SP value oo Weight average molecular weight monomer or oligomer blending amount (parts by mass) SP value monomer or oligomer blending amount (parts by mass) SP value i Blending amount (parts by mass) Resin phase separation structure Arithmetic average thick chain degree: Ra ( ym) Average length of rough seam curve: RSm ( &quot;m) Ten points average rough degree: Rz (in m) Root mean square roughing degree ^ Rq ( /zm) Pencil hardness /&quot;Ν ΓΊ 1 ϋ v0 Adhesive interference fringe damage ^ Φ Particle ^¥铋091荽哒鹿审^铋》蘅^' Miscellaneous ^^蘅^哿,^^^-=-韬辁,者&lt; °嗨遝蘅 辟&lt;«&gt;^:1 find 201128240 as shown in Table 1 above, indicating The optical film of the embodiment 丨8 has a high front brightness when incorporated in the backlight unit, and suppresses the adhesion with other optical sheets or the generation of interference fringes, thereby reducing the damage of other optical sheets. . [Examples 9 to 16] In Example 1, the component of the coating liquid for an anti-adhesive layer, that is, an acrylic copolymer containing an unsaturated double bond (A_〇, pentaerythritol triacrylate vinegar (B4), and The blending amount of the urethane acrylate (C-1) is as shown in the following Table 2, and the non-volatile component ratio of the coating liquid for the release layer is 6% by mass, and the average of the formed release layer is obtained. An optical sheet of each of Examples 9 to 16 was obtained in the same manner as in Example i except that the thickness was 2 &quot; m. [Evaluation of Characteristics] For all the optical sheets of Examples 9 to 16 obtained above, The formation of the double island structure on the surface of the anti-adhesion layer was confirmed by the above-mentioned electron microscope observation. Further, the arithmetic mean roughness (the average length (ROm) of the RO and the roughness parameter elements was measured in the same manner as above. , ten-roughness roughness (RZ), root mean square roughness (Rq), and pencil hardness, and further evaluating the front brightness and the optical film caused by the optical sheet when the optical sheets are incorporated into the backlight unit according to the above evaluation criteria The influence of the film 1 The generation of interference fringes and the generation of damage In addition, the average height (1), the average protrusion diameter (ri), the average diameter U2, and the presence density of each convex portion of the anti-adhesive layer were measured. When the convex portion was rubbed, the burst microscope "VK-8500" (KEYENCE eight) was used. π, the result is shown in the following table (kappa (four) public (four) 造 将 结 结 39 201128240

ο 201128240 According to the results of Table 2 above, the ratio of the blending amount of the optical moon, ρ\ is not as follows: by changing the formation of the damage, and adjusting the anti-adhesive layer to maintain a high front brightness and prevent damage The optical sheet is designed such that the surface is shaped, and the adhesion is improved by blending the layers with the ^.产业Industrial Applicability] In particular, it is preferably used in a liquid crystal display device. As described above, the constituent elements of the optical sheet backlight unit of the present invention are useful as an overtype liquid crystal display device. BRIEF DESCRIPTION OF THE DRAWINGS Fig. L is a schematic cross-sectional view showing an optical sheet of the embodiment of the present invention. Fig. 2(a) λ%, - a mode of the element; Body diagram v. Unusual edge illumination type backlight single picture 2 ( b ) shows the mode of general light diffusion film [main component symbol description] 1 optical film 2 substrate layer 3 optical layer 4 anti-adhesive layer 5 adhesive 6 Light diffusing agent 7 fine uneven shape 20 backlight unit 21 lamp 22 light guide plate 41 201128240 23 optical sheet 24 prism sheet 25 light diffusing sheet 26 base material layer 27 optical layer 28 anti-adhesive layer 29 adhesive 30 resin beads 31 adhesive 3 2 Beads 42

Claims (1)

201128240 VII. Patent application scope··=species optics; W system (4) (4) The substrate layer, the optical layer on one side of the substrate, and the other layer laminated on the substrate layer, such as the layer on the entire surface of the anti-adhesion layer* (4) The anti-adhesive layer has a fine concavo-convex shape on the u surface, and the anti-adhesive layer is prepared from the first component, the second forming blade, and the third component of the af micro-disintegration and the third/third phase. The curable composition is characterized in that the first component, the quinone, the +V, the oligo: and the third component are each independently selected from at least one of the group consisting of a sputum sputum and a monomer. The optical sheet of the first aspect of the invention, wherein the first component is "the substance '帛2 component is a monomer or an oligomer, and the third component is a monomer or oligomer having a polar group. . 3. An optical sheet as claimed in the patent specification, wherein the polar group is selected from the group consisting of urethane grubup, trimeric isocyanate, gland, carbonated, amidino, @ I « At least one of a group consisting of a S group, a carboxyl group, an acid anhydride group, an epoxy group, an imido group, and an amine group. The optical sheet of claim 3, wherein the second component, the second component, and the third component each have a (meth)acrylonitrile group. 5. The optical sheet of claim 2, wherein the third component is urethane (meth) acrylate. 6. The optical sheet according to claim 2, wherein the third component is a matrix phase, and the second component is a domain phase dispersed in a matrix phase. The i-th component is dispersed. The granular phase in the domain phase. 7. The optical sheet of claim 1, wherein the difference between the solubility parameter (SP value) of the first component and the fourth component of the third component and the third component is 0.3 or more. 8. The optical sheet of the first aspect of the invention, wherein the mass ratio of the first component based on the total amount of the first component, the second component, and the third component is 0.1% by mass or more and 10% by mass or less. The mass ratio of the second component is 10% by mass or more and 50% by mass or less, and the mass ratio of the third component is 40% by mass or more and 89.9 % by mass or less. A backlight unit for a liquid crystal display device, which is characterized in that the light emitted from the lamp is dispersed and introduced to the surface side, and is characterized in that the optical sheet of the first application of the patent application is provided. Eight, schema. (such as the next page) 44