TWI290232B - Scratch-resistant optical film - Google Patents

Abstract

The subject invention relates to a scratch-resistant optical film, which comprises (a) a transparent substrate; (b) a diffusion layer on the upper side of the substrate, which has a convex or concave structure and is comprised of a first hard coat layer; (c) a scratch-resistant layer on the lower side of the substrate, which is comprised of a second hard coat layer; wherein the first and second hard coat layers have a surface resistivity in the range of 10<8> to 10<12>Omega/□ (square) and a hardness of 3H or more than 3H as measured according to JIS K5400 method. The optical film of the invention has a low volume shrinkage, is hard to warp, and possesses excellent anti-static properties and high hardness properties.

Description

1290232 IX. Description of the Invention: [Technical Field] The present invention relates to a scratch-resistant optical film having a hardened coating, and more particularly to a protective diffusion film which can be applied to a liquid crystal display. [Prior Art] Since the liquid crystal panel itself does not emit light, the backlight module as a brightness source is an important component of the LCD display function, and is very important for improving the brightness of the liquid crystal display. At present, the use of a variety of optical films in the backlight module provides an application that can increase the brightness of the LCD panel to make the light source the most efficient, without the need to change any component design or consume additional energy. Economical and simple solution. The figure is a simplified schematic diagram of various optical films contained in the backlight module. As shown in FIG. 1 , the light pre-film included in the general backlight module includes a reflective film (1) disposed under the light guide (2); and other optical films disposed above the light guide plate (2). From bottom to top, the diffusion film (3), the light-concentrating films (4) and (5), and the protective diffusion film (6) are sequentially arranged. Pre-industry solution

Revealed in the middle. In order to atomize the concentrating film, the main function of the protective diffusing concentrating film is to collect the scattered light from the light guide plate to all directions by refraction and internal total reflection, and concentrate it to a positive of about ±35 degrees. Angle of view (On-axis) to increase the brightness of the LCD. The concentrating film mainly uses a regular or irregular 稜鏡 pattern microstructure to achieve the concentrating effect, but if the 稜鏡 structure is in contact with the panel, it is easy to cause damage, and the optical properties are mutually damaged, for example, as disclosed in the large number. For the 109827.doc 1290232 film, a resin coating containing organic or inorganic beads is generally applied to the surface of the substrate. However, in the past, the resin coating selected in the past is not good, and it is easy to cause the phenomenon of falling off the beads and/or the warpage of the film, thereby affecting the optical properties, and reducing the light-concentrating film. In view of the above, the present invention provides a scratch-resistant optical film. Improve the above shortcomings. The invention selects a novel hard cover liquid to form a hard cover layer on the surface of the substrate, which can enhance the hardness of the optical film after curing, prevent the scratching or damage to the 稜鏡 structure of the concentrating film during operation, and has high transparency and no Wei Qu The object of the invention can be achieved. [Summary of the Invention]

The main purpose of the present invention is to provide a tortoise-free scratch-resistant optical film comprising a N (a) transparent substrate; 〇 &gt;) a diffusion layer over the substrate, the diffusion layer having a concave-convex structure and being first a hard coat layer; and (4) a scratch-resistant layer under the substrate, the scratch-resistant layer having a smooth surface and being composed of a second hard cover layer; wherein the first and second hard masks The surface resistivity of the layer ranges from ι 8 to (10) Ω/□ (sq·), and is measured according to the JIS K5 standard method, the pencil hardness above. </ RTI> </ RTI> <RTIgt; </ RTI> The substrate used in the scratch-resistant optical film of the present invention is known to those skilled in the art, and there is no particular limitation on the plastic substrate of the present invention. Limit: or plastic. Upstairs; polyester tree month 109827.doc 1290232

(polyester resin), such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN); polyacrylic acid (p〇lyacrylate resin), such as Polymethyl methacrylate (PMMA); polyimide resin; polycycloolefin resin; polycarbonate resin (p〇iycarb〇nate resin), polyamine hydrazine A resin (p〇lyUre|;hane resin); a triacetate cellulose (TAC); or a mixture thereof. Preferred is polyethylene terephthalate, polymethyl methacrylate, polycycloolefin resin, cellulose triacetate or a mixture thereof, more preferably polyethylene terephthalate. The thickness of the substrate will generally depend on the desired optical product, preferably between about 16 microns (μm) and about 250 microns. g When using a plastic substrate, a hard cover layer is formed on the surface of the plastic substrate to increase the hardness and avoid scratching the surface of the substrate to achieve a scratch-resistant effect. The hard coat layer used in the industry is composed of an ultraviolet curable resin, which can improve the surface hardness. However, due to the inconsistent shrinkage and uneven stress, the warp is likely to occur. In order to solve the problem of warpage, the present invention forms a hard mask layer and a hard mask layer above and below the substrate by treating the hard mask liquid by heating and ultraviolet double curing. According to the present invention, the hard cover liquid for forming the first and second hard cover layers may be the same or different, and the hard cover liquid is formed by an anti-static agent and an ultraviolet hardening tree. The thermal setting resin, the thermal plastic resin or a mixture thereof is preferably a thermosetting tree 109827.doc 1290232 grease. By virtue of the high strength and good toughness of the thermosetting resin, the resulting hard mask layer can have excellent heat resistance and extremely small volume shrinkage, thereby overcoming warpage problems. Meanwhile, the hard mask layer of the optical film of the present invention has good antistatic property and high hardness property, and its surface resistivity is from 1 〇 8 to Ω / square, and is measured according to the JIS 〇 4 〇〇 standard method. Pencil hardness can be up to 3 inches or more.

The scratch-resistant optical film of the present invention has good light transmittance, that is, has a tooth penetration of between about 85% and about 95% according to the JIS Κ7136 standard method, and further, is a concentrating film. The anti-scratch film of the present invention has a certain degree of light diffusing effect, that is, it has a haze of 20% to 9〇%, preferably 3〇% to 'measured according to the jis KM% standard method. More preferably 40% to 55%. In order to achieve a light-diffusing effect, the optical film of the present invention forms a fine uneven structure on the substrate (i.e., the 'light-emitting surface') as a diffusion layer. The method of forming the diffusion layer is not particularly limited and is well known to those skilled in the art, such as, but not limited to, screen printing, coating, spraying, or processing. The diffusion layer must allow light to pass through, preferably colorless and transparent. In one embodiment of the invention, the thickness of the diffusion layer is between 5 and 20 microns, preferably between 6 and 15 microns. The preferred embodiment of the present invention is formed by coating a substrate with a cover layer containing a machine to form the diffusion layer having a textured structure. There are no special restrictions on the types of cages, such as spheres, ovals, and diamonds. For example, τ is acrylate resin, amine-based resin, fluorenone resin or The mixed inlet 'preferably is acrylic acid g to the tree 109827.doc 1290232 grease. The above organic particles may have the same or different diameters, preferably between about 2 micro but not about 30 microns, more preferably between about 5 microns and about. Between microns. The amount of the above organic particles is from 1 〇 to 3 〇 by weight based on the total weight of the resin component in the hard coat layer. In order to prevent the optical film of the present invention from being scratched by other films, the optical of the present invention = coating a second hard cover layer under the substrate to form - as a layer

Smooth the surface. The scratch-resistant layer has a thickness of between 1 micrometer and 1 micrometer, preferably between 3 micrometers and 6 micrometers. 2 is a preferred embodiment of a scratch resistant optical film of the present invention. As shown in FIG. 2, the scratch-resistant optical film (20) of the present invention is disposed above the light-concentrating film (1), and above the soil material (12) is a diffusion layer (13) having a concave-convex structure, the diffusion layer comprising organic The particles (14), and under the substrate, are scratch resistant layers (11) having a smooth surface. The ultraviolet curable resin which can be used in the hard coat liquid of the present invention contains at least one acrylic monomer or acrylate monomer having one or more functional groups, preferably an acrylate monomer. Acrylate monomers useful in the present invention, such as, but not limited to, (meth) acrylate, urethane acrylate, polyester acrylate (p〇lyester acryiat or epoxy acrylate) Epoxy acrylate, etc., preferably (meth) acrylate 0 exemplified, the acrylates suitable for use in the present invention may be selected from the group consisting of methyl methacrylate, butyl acrylate, and phenoxyethyl 2_ phenoxy ethyl acrylate, ethoxyiated 2-Ph_xy ethyl acryIate, 2_(2 ethoxy ethoxy 109827.doc 1290232

2-(2»*ethoxyethoxy)ethyl acrylate, cyclic trimethylolpropane formal acrylate, β-carboxyethyl acrylate ), lauric acid (meth) acrylate, isooctyl acrylate, stearyl (meth) acrylate , isodecyl acrylate, isoborny (meth)acrylate, benzyl acrylate, 3-men-2 , 2-hydroxy-2,2-dimercaptopropyl diacrylate, ethoxylated 1,6-hexanediol diacrylate (ethoxylated l,6- Hexanediol diacrylate), dipropylene glycol diacrylate, ethoxylated dipropylene glycol diacrylate, neopentyl glycol diacrylate, propoxygenation Pentanediol diacrylate (propoxylated neopentyl glycol di acrylate), ethoxylated bisphenol-A di(meth)acrylate, 2-mercapto-1,3-propanediol dipropylene vinegar (2) -methyl -15 3-propanediol diacrylate), ethoxylated 2-methyl-1,3-propanediol diacrylate ^ 2-T 2-ethyl-1 , 3-propanediol diacrylate (2讣1^71-2&lt;71-1,3-propanediol diacrylate), ethylene glycol dimethacrylate, diethylene glycol dioxime Diethylene glycol dimethacrylate, 2-carbylethylmercaptopropene-10-109827.doc 1290232

2-hydroxyethyl metharcrylate phosphate, Tris(2-hydroxyethyl)isocyanurate triacrylate, pentaerythritol triacrylate Ethoxylated trimethyl o lp r op an e triacrylate, propoxylated trimethylolpropane triacrylate, ethoxylated trimethyl o lp r op an e triacrylate Trimethylolpropane trimethacrylate, pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate, bis-trimethyl methacrylate tetracene Ditrimethylolpropane tetraacrylate, propoxylated pentaerythritol tetraacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, bismuth thiophene acrylate Purpose, acrylic acid Hydroxyethyl acrylate (HEA), 2-hydroxyethyl methacrylate (HEMA), tripropylene glycol di(meth)acrylate, 1,4 -1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate (1,6-hexanediol di(meth) Acrylate), allylated cyclohexyl di(meth)acrylate, isocyanurate di(meth)acrylate Ethoxylated trimethylol propane 109827.doc 1290232 tri(meth) acrylate, propoxylated glycerol tris(methyl)propane acrylate (propoxylated glycerol tri(meth)acrylate), trimethylol propane tri(meth)acrylate, tris(propyloxyethyl)isocyanate Tris( aery loxy ethyl) isocyanurate) and a group of such mixtures. In order to increase the film forming property of the hard coat liquid, the ultraviolet curable resin of the present invention may optionally contain a polymer having a molecular weight of from 103 to 104, and such an oligomerization system is well known to those skilled in the art, such as an acrylate-based oligo. a polymer such as, but not limited to, a urethane acrylate such as an aliphatic urethane acrylate or an aliphatic urethane hexaacrylate , aromatic urethane hexaacrylate; epoxy acrylate, such as bisphenol-A epoxy diacrylate, novolac ep xy acrylate ); polyester acrylate, such as polyester diacrylate (po丨yester diacryiate); or pure acrylate. The thermosetting resin which can be used in the hard coat liquid of the present invention has an average molecular weight of usually from 10 to 2 x 10 6 ', preferably from 2 x 10 4 to 3 x 105, more preferably from 4 x l to 4 to 105. The thermosetting resin of the present invention may be selected from the group consisting of polystyrene resins, polyester resins, epoxy resins, polyacrylate resins, polycarbonates, and mixtures thereof, preferably a polyacrylate resin such as (methyl). )Methyl acrylate. In order to increase the crosslinkability, the thermosetting resin may optionally contain a hydroxyl group (—〇Η), a carboxyl group (—CQOH) or an amine group (—ΝΗ 2), preferably a hydroxyl group, such as hydroxyethyl acrylate, hydroxy acrylate. Propyl ester 109827.doc -12- 1290232 (hydroxypropyl acrylate, hydrazine), 2-hydroxyethyl methacrylate (HEMA), hydroxypropyl methacrylate (HPMA) or a mixture thereof. The thermoplastic resin usable in the hard coat liquid of the present invention may be selected from a polyolefin resin such as polyethylene (PE) or polypropylene (PP); a polyester resin such as polyterephthalic acid. Ethylene glycol (PET); polyacrylate resin, such as polymethyl methacrylate (PMMA); and mixtures thereof. During the processing or manufacturing of resin materials, static electricity is generated when the resin material rubs against itself or other materials, and free dust in the air is collected on the surface, causing damage to expensive electronic components, even igniting flammable gases or Powder causes fire, so it is necessary to add an antistatic agent. The hard cover liquid of the present invention is obtained by directly mixing an antistatic agent with a resin and then kneading it. The antistatic agent which can be used in the hard coat liquid of the present invention is not particularly limited and is well known to those skilled in the art, such as ethoxyglycerin fatty acid esters, quaternary amine compounds, fatty amine derivatives, and epoxy resins. Resin (such as polyethylene oxide), siloxane or other alcohol derivatives, such as polyethanol ester, polyethylene glycol test. According to an embodiment of the present invention, the first and second hard mask layers are formed by treating the hard mask liquid by heating and ultraviolet double curing; and forming the first and second hard mask layers. The cover liquid may be the same or different, "匕sk electrostatic agent, ultraviolet curing resin and at least one type of resin selected from the group consisting of thermosetting silicone resin and mixtures thereof. Preferably, the hard cover liquid contains static electricity. Agent, UV curable resin and thermoset tree 109827.doc -13 - 1290232 grease. According to the present invention, the hard cover liquid for forming the first hard mask layer and the second hard mask layer may optionally include those known to those skilled in the art. An additive such as, but not limited to, a curing agent, a photoinitiator (10) initiator, a leveling agent, a dispersing agent or a stabilizer, etc. The hardener used in the present invention is well known to those skilled in the art. It can form a chemical bond between a molecule and a molecule to form a cross-linking φ (Cr〇SSHnking), such as, but not limited to, a diisocyanate (diiS0Cyanate:) or a polyisocyanate. The photoinitiator to be used is a radical initiating by light irradiation and is initiated by radical transfer. The photoinitiator suitable for use in the present invention is not particularly limited, and is, for example, but not limited to, diphenyl. Benzene (benzophenone), benzophenone (benz〇in), 2_hydroxymethylphenylpropyl (2, hydr〇xy-2-methyl small phenyl-pr〇pan, methoxy 1,2 - a base of small _ (2,2_dimethoxy-i,2- • diphenylethan-b〇ne), hydroxycyclohexyl phenyl ketone, 2,4,6-trimethylbenzene Metyl diphenylphosphine oxide (254,6-trimethylbenz〇yi diphenyl p - • oxide), or a mixture thereof. Preferred photoinitiator is benzophenone or 1-hydroxycyclohexyl phenyl ketone. The diffusion layer or scratch-resistant layer of the optical film of the present invention can be produced by any means known to those skilled in the art, for example, by a method comprising the following steps: (1) ultraviolet curing resin, thermosetting resin, solvent and anti- Electrostatic agent, etc. 109827.doc -14- 1290232 component, if necessary mixed with conventional additives Forming a colloidal hard cover liquid; (II) applying the hard cover liquid to the surface of the substrate to form a coating; (III) feeding the coated substrate to a dryer, evaporating the solvent, After heating to a temperature higher than the curing temperature of the thermosetting resin, heating is carried out for several minutes to carry out thermal polymerization; (IV) then the energy beam of the coating is calcined to form a hard cover layer, and the intensity of the energy ray may be 100 to 1000 mJ/cm 2 (mJ/cm 2 ), preferably 200 to 8 〇〇 mJ/cm 2 . If necessary, T repeats the above steps to obtain a hard layer of a plurality of layers. The optical film of the present invention can be used in a backlight module having a concentrating film and disposed on a light-emitting surface of the concentrating film. The optical film of the present invention is coated with a novel hard cover liquid on the surface of the substrate to form a hard cover layer, which can effectively improve the hardness, protect the contact member, and have a smooth surface without warpage, thereby preventing the optical properties from being affected. Further, since the optical film of the present invention is coated with a coating having a fine uneven structure on the surface of the substrate, it has a diffusion effect and can be used as a protective diffusion film in a backlight module of a display. The following examples are intended to be illustrative of the invention and are not intended to limit the scope of the invention. Any modifications and variations that can be easily made by anyone skilled in the art are included in the scope of the disclosure of the present specification and the scope of the appended claims. Example 1 First Hard Cover Layer (Diffusion Layer) A 250 ml glass bottle was used, and a solvent of 2 g of toluene and 6 g of d g was added to 109827.doc • 15 * 1290232 into a glass bottle. Add 3 grams of acrylic particles with an average particle size of § μηΐ under high-speed stirring [MB30X_8, Japan Sekisui Chemicals Co., Ltd.], UV-curing resin: mercapto-acrylic acid-2-light-based ethyl ester, methacrylic acid A total of 12 g of a monomer mixture of ester, butyl acrylate and pentaerythritol triacrylate, thermosetting resin: 10 g of acrylate resin [Eterac 7363_ts_5〇, Eternal] (solid content about 50 〇 / 〇), then add ι·〇克Hardener [Desmodur 3390, Bayer Company] (about 75% solids), 2.0 g antistatic agent [GMB-36M-AS, Marubishi oil Chem Co., Ltd.] (solid content about 20%), photoinitiator A total of 0.6 g of a mixture of benzophenone and cyclohexyl phenyl ketone was finally foamed into a coating having a solid content of about 40% and a total weight of about 54.6 g. The coating was applied to the surface of a PET substrate [U34, Toray] having a thickness of 188 μm by RDS Coat Bar #8, dried at 100 ° C for 1 minute, and then exposed to a UV exposure machine (Fusion UV, F600V, 600). W/inch, Η-type lamp source) power set to 100%, speed 15 m / min, energy ray 200 mJ / cm2, dried to produce a first hard cover layer with a coating thickness of about 1 〇 μηχ (diffusion layer) ). The second hard cover layer (scratch resistant layer) was taken into a 25 ml glass bottle, and the solvent: 6 g of toluene and 3 g of methyl ethyl ketone were placed in a glass bottle. Ultraviolet curing resin is added sequentially under high-speed stirring: a total of 8 g of a monomer mixture of 2-hydroxyethyl methacrylate, methyl methacrylate, butyl acrylate and pentaerythritol triacrylate, thermosetting resin: 16 g of acrylate Resin [Eterac 7363-ts-50, Eternal] (solid wounds about 50%) 'Additional 1.6 g of hardener [Desmodur 3390, Bayer] (solids about 75%), 1.6 g of antistatic agent [GMB-36M -AS, 109827.doc -16- 1290232

Manabishi oil Chem· Co” Ltd] (solid content about 20%), photoinitiator: a mixture of ketone and 1-cyclohexyl phenyl ketone, 6 g, and finally foamed into a solid content of about 30 °/. and a total weight of about 57.6 g of paint. The coating was applied to the other side surface of the pET substrate coated with the first hard cover layer by RDS applicator #6, after 1 〇〇. : After drying for 1 minute, set the power of the UV exposure machine (Fusion UV, F600V, 600 W/inch, 灯 type light source) to

100%, speed 15 m/min, energy ray 200 mJ/cm2, and dried to obtain a second hard cover layer (scratch resistant layer) having a coating thickness of about 5 μm. The scratch-resistant optical film prepared above had a total film thickness of 202 μm, and various characteristics were tested. The results of the test are shown in Table 1 below. Comparative Example 1 A commercially available protective diffusion film [mi7vGz, having a thickness of 200 Å,

Tsujiden Company] performed various characteristic tests, and the results obtained by the test are shown in Table 1 below. Comparative Example 2 A commercially available protective diffusion film [pBs〇72, company] having a thickness of 200 μm was subjected to various characteristic tests, and the results of the test were as shown in the following table. 0 Comparative Example 3 Commercially available in a thickness of 205 Å. Protective diffusion film [I! Post, a. The company conducts various characteristic tests, and the results obtained from the test are as follows. Test method: Test of the brightness of transparent material: use the chest 5_ haze meter [Japan Electro-Color Co., Ltd.] 'Ken fine K7_ quasi-method, measure the haze of the product 109827.doc 17 1290232 (Hz) and full light transmission Rate (Tt), the results of the test are shown in the following table]. Pencil hardness test: The pencil hardness of the surface of the sample to be tested was tested by a Mitsubishi errone (2H, 3Hwjisk_54 〇〇 method using a pencil hardness tester [Elc〇meter 3〇86, SCRATCH B0Y], and the results of the test are shown in Table 1 below. Surface resistivity test: The surface resistivity of the sample to be tested was measured by a super insulation meter [East Asia T0ADKK, SM8220&amp;SME_831〇, 5〇〇v]. The test environment was as follows: 23 hunger '55±5% RH, the test results are as follows As shown in Table 1. Scratch resistance test: Stick the 3M BEF-H\10T diaphragm (length and width 2) on the 6 (8) metric metric flat (20 mm x 20 mm) using a linear grinder tester [TABER 575()] 〇_χ2〇_), directly test the heavy-duty and scratch-resistance of the anti-scratch layer of the sample to be tested with its prismatic microstructure layer, and perform 10 cycles scratch resistance test at a speed of test stroke 2 The results of the test are shown in the following Table 1. Warpage test: Cut the sample to be tested into a wide width (10) (five) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ After the dish reaches the temperature, the 卩 gap gauge measures the angle of the four corners of the diaphragm. Degree (recording early position · · mm (mm), ° recorded method · · for example, 〇; 〇; 〇; 〇), to evaluate the sound; ... heat and resistance to bending performance, the results of the warping test are as follows 109827.doc -18· 1290232 Table 1 Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Haze Hz (%) 48.47 45.71 61.71 61.44 Total light transmittance Tt (%) 91.40 91.18 93.27 93.00 Wrong pen hardness (Diffusion layer) 3H 2Η 2Η 2Η Pencil hardness (scratch resistant layer) 3H 3Η 2Η 2Η Surface resistivity Ω/□ (diffusion layer) 6·9χ1012 2.3χ10π 7.4χ1015 6.3χ1016 Surface resistivity Ω/□ (scratch resistant layer) 9.6 Χ1011 1.8χ1012 1·3χ1012 2.6χ1013 Scratch-resistant layer scratch-resistant test No scratches, no scratches, severe scratches, severe scratches, warp test (mm) 〇;〇; 0·1;0·1; 0·1;0· 1; 0·2; 0·2; (120 ° C, l〇min) 〇; 〇0·2; 0·2 From the results of the examples and comparative examples, the scratch-resistant optical film of the present invention has good antistatic properties. Sexual and high hardness characteristics, and the surface is flat without warping, thus avoiding the influence of optical properties. [Simplified illustration] Figure 1 shows the various optics contained in the backlight module. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 2 is a schematic view showing a preferred embodiment of the scratch resistant optical film of the present invention. [Main component symbol description] 1 2 3 4 and 5 6 10 11 12 Reflective film light guide diffuser film concentrating film protective diffusion film concentrating film scratch-resistant layer substrate 109827.doc -19- 1290232 13 diffusion layer 14 organic particles 20 Scratch resistant optical film

109827.doc -20

Claims (1)

Patent application No. I29%3^7482 , extravagant t Chinese patent pending replacement (August 95) X. Patent scope · 1 · A scratch-resistant optical film comprising (a) a transparent substrate; the diffusion layer has a concave-convex structure and the scratch-resistant layer a diffusion layer having a smooth surface (b) above the substrate is composed of a first hard mask layer; and (c) a scratch-resistant layer under the substrate and composed of a second hard mask layer; The surface resistivity of the first and second hard cap layers is from 1 〇 8 to Ω / square, and is measured according to JIS K54 〇〇 standard method, with a pen hardness of or above. 2. The anti-scratch optical film of claim 1, wherein the first and second hard cover layers are formed by treating the hard cover liquid by heating and ultraviolet double curing; and forming the first and second The hard cover liquid of the hard cover layer may be the same or different, and includes an antistatic agent, an ultraviolet curable resin, and at least one resin selected from the group consisting of thermosetting resins, thermoplastic resins, and mixtures thereof. 3. A scratch-resistant optical film as claimed. The transparent substrate is plastic or glass. 4. The anti-scratch optical film of claim 1 has a thickness of 5 micrometers to 20 micrometers. 5) The scratch-resistant optical film of claim 2, wherein the hard cover layer further comprises organic particles, and the organic θ 1 匕 两 two particles are disposed relative to the resin in the hard cover layer The total weight of the ingredients is from 1 〇 to 3 〇 by weight. 6. The anti-scratch optical film of claim 5, the complex medium, and the organic particles are selected from the group consisting of C. 109827-950804.doc ^ 4 1290232 olefinic resin, urethane s resin, and a mixture thereof. . 7. The scratch resistant optical film of claim 5, wherein the organic particles have a diameter of from 2 micrometers to 30 micrometers. 8. A scratch resistant optical film as claimed in claim 1, wherein the scratch resistant layer has a thickness of from 丨 micron to 1 微米 micron. 9. The scratch-resistant optical film of claim 2, wherein the antistatic agent is selected from the group consisting of ethoxyglycerin fatty acid esters, quaternary amine compounds, fatty amine derivatives, polyethylene oxide, decane or alcohol Derivatives. The anti-scratch optical film of claim 2, wherein the ultraviolet curable resin comprises at least one acrylic monomer or acrylate monomer having one or more functional groups. 11 · The anti-scratch optical film of the item 1 ,, wherein the acrylate monomer is (meth) acrylate, urethane acrylate, polyester acrylate or epoxy acrylate wine. 12. The scratch resistant optical film of claim 1, wherein the ultraviolet curable resin further comprises an yttrium acrylate oligomer. 13. The scratch resistant optical film of claim 2, wherein the thermosetting resin is selected from the group consisting of polystyrene resins, polyester resins, epoxy resins, polyacrylate resins, polycarbonates, and mixtures thereof. 14. The scratch resistant optical film of claim 2, wherein the hard cover liquid for forming the first hard mask layer and the second hard mask layer each further comprises an additive. 15. The scratch resistant optical film of claim 1, wherein the optical film has a haze of from 20% to 90% as measured according to the standard method of nS K7136. 109827-950804.doc 1290232 — Η 16. The scratch resistant optical film of claim 1, wherein the optical film has a light transmittance of from 85% to 95%. 17 - a warp-resistant scratch-resistant optical film comprising: (a) a transparent substrate; (b) a diffusion layer on one side of the substrate, the diffusion layer having a concave-convex structure and a hard cover layer; and (c) a scratch resistant layer on the other side of the substrate, the resist layer having a smooth surface and being composed of a second hard cover layer; wherein the first and second layers The hard cover layer has a surface resistivity of 1〇8 to 1012Q/[D(SqUare), and has a pencil hardness of 311 or more according to the JIS K5400 standard method; and the first and second hard cover layers are Forming the hard cover liquid by heat and ultraviolet double curing; and the hard cover liquid for forming the first and second hard cover layers may be the same or different, and comprises an antistatic agent, an ultraviolet curing resin and a thermosetting resin . 18. The scratch resistant optical film of claim 17, wherein the optical film has a haze of from 20% to 90% as measured according to the standard method of JIS K7136. 19. The scratch resistant optical film of claim 17, wherein the optical film has a light transmittance of from 85% to 95%. The scratch-resistant optical film according to any one of claims 1 to 19, which is used as a protective diffusion film in a backlight module of a display. 109827-950804.doc