CN100468087C - Anti scraping optical film containing enen size organic particles - Google Patents
Anti scraping optical film containing enen size organic particles Download PDFInfo
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- CN100468087C CN100468087C CNB2007101230123A CN200710123012A CN100468087C CN 100468087 C CN100468087 C CN 100468087C CN B2007101230123 A CNB2007101230123 A CN B2007101230123A CN 200710123012 A CN200710123012 A CN 200710123012A CN 100468087 C CN100468087 C CN 100468087C
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Abstract
The invention discloses an anti scalping blooming. It includes transparent basis material which has the first and second surfaces, diffused layer set on the first surface and formed by the first hard coat layer with many organic particles, and anti scalping layer set the second surface and formed by the second hard coat layer with smooth surface. The organic particle is polyacrylate resin with single and even grain diameter of which acr monomer can be used as polymerization unit and its weight accounts for 30wt%-70wt%. The blooming of the invention has good optical character and practicability, which can be used in back light module of the liquid crystal display and portable computer.
Description
Technical field
The invention belongs to anti-scratch blooming field, particularly a kind of anti-scratch blooming that contains the organic granular of high-homogenized particle diameter especially refers to a kind of protectiveness diffusion barrier that can be applicable in the LCD.
Background technology
Liquid crystal panel itself is not luminous, therefore becomes the significant components of LCD Presentation Function as the backlight module in brightness source, and extremely important to improving liquid crystal display brightness.At present, in backlight module, utilize blooming miscellaneous, provide a kind of can improve the LCD panel luminance so that light source can full blast application process, change method and need not change any component design or consume additional energy source, become most economical and easy solution.Fig. 1 is the rough schematic of the contained various bloomings of backlight module.As shown in Figure 1, the general contained blooming of backlight module comprises the reflectance coating 1 that is disposed at light guide plate (light guide) 2 belows; And being disposed at other bloomings of light guide plate 2 tops, it is from the bottom to top in regular turn: following diffusion barrier 3, condensing film 4 and 5, and protectiveness diffusion barrier 6.
The main function of condensing film is that refraction and the inner full-reflection that the collection light guide plate is sent arrives all directions light at random, and the light of collecting is concentrated to positive visual angle (On-axis) direction of degree approximately ± 35, with the briliancy of raising LCD.Condensing film mainly is to utilize rule or irregular prism decorative pattern microstructure to reach spotlight effect, but if prism structure contacts with panel, easily produces scratch, influences optical property.The method of industry solution at present mainly is to utilize protectiveness diffusion barrier (or being called diffusion barrier) to prevent that condensing film and panel from producing vibration and causing mutual damage when carrying.
In addition, the protectiveness diffusion barrier also has the light that makes by condensing film and forms diffusion, reaches effect of uniform light, and the function of eliminating pattern with the protection condensing film of condensing film.The operation principles of protectiveness diffusion barrier is to make light to pass in the medium of different refractivity and produces the phenomenon of refraction, reflection, scattering, to reach the effect of optics diffusion.General traditional protectiveness diffusion barrier is divided into two kinds on internal divergence type and surface diffusion type.The internal divergence type is by the polycarbonate (Polycarbonate that contains the organic or inorganic granule proliferation, PC) resin, polystyrene (polystyene) or polymethylmethacrylate (Polymethylmethacrylate, PMMA) resin is formed, utilize granule proliferation, light is passed in the different medium of two refractive indexes, produce refraction and scattering phenomenon, thereby the line source that light source is penetrated diffuses into uniform surface light source, promptly allow the light of below light source see through diffusion barrier generation diffusion, upwards evenly disperse the back to penetrate in the front.The surface diffusion type then makes the surface roughening of transparent resin plate, thus reflection and refracted ray, but the manufacturing process of this way is more time-consuming, and complicated, required cost is higher relatively.
According to above-mentioned technology as can be known; the protectiveness diffusion barrier of internal divergence type uses usually has the granule proliferation that wide particle diameter distributes, particle size is different; promptly when being the longitudinal axis with quantity, when particle size was the transverse axis mapping, employed granule proliferation size distribution was wide unimodal shape and distributes.For example, when the mean grain size of the particle that adopts when prior art was 15 microns, the size distribution of granule proliferation often was 1 to 30 micron.Perhaps adopt the potpourri that has the granule proliferation of different mean grain sizes more than two groups, that is, granule proliferation size distribution (with quantity is the longitudinal axis, and particle size is a transverse axis) is two (many) peaks shape and distributes.Though use the granule proliferation that wide particle diameter distributes or two (many) peaks shape distributes can give full play to the light diffusion effect, because the particle size of granule proliferation differs, can make scattering of light very at random, cause light source effectively to utilize.
When the granule proliferation in the diffusion barrier is assembled each other or sticked, not only can influence the uniformity coefficient of diffusion light, and make display surface produce dim spot easily.For addressing the above problem, US 7,218, and 450 B2 use one or more single organic or inorganic particle that distributes as granule proliferation, and require to stick ratio, aggregated particle particle diameter and when using two kinds of single distributed granules, the mean grain size value of these two kinds of single distributed granules.US 7,218, in the employed single distributed granule of 450 B2,95% particle grain size fall within its mean grain size ± 15% scope in.US 7,218, and 450 B2 disclose and used the narrower granule proliferation of particle size distribution range, but do not discuss at the degree of crosslinking of granule proliferation.In fact, when the degree of crosslinking of granule proliferation is not enough, will cause some unavoidable problem.For example, therefore easy and solvent action generation swelling (swelling) phenomenon of the particle that degree of crosslinking is low, is compared with the particle that degree of crosslinking is high, and the solvent resistance of the particle that degree of crosslinking is low is lower; And the particle that degree of crosslinking is low causes volume change because of lyosorption, the optical property instability that will cause particle, and the surface that makes particle produces and to increase glutinous phenomenon, easily make between particle and the particle and produce coacervation, and then the coating processability that influences diffusion barrier with and the light diffusion effect.
In sum, though the diffuser efficiency of protectiveness diffusion barrier of the prior art meets the requirements, its liquid crystal display is used but its briliancy performance is also not enough, i.e. the luminance shortage of LCD.Therefore, prior art needs further to improve the briliancy of protectiveness diffusion barrier, and then promotes the brightness of LCD integral body.
Summary of the invention
The invention provides a kind of anti-scratch blooming,, avoid blooming and panel when carrying, to produce vibration and cause mutual damage to protect other blooming.
The invention provides a kind of anti-scratch blooming, it comprises: (a) transparent base, and this base material has first surface and second surface; (b) be positioned at the diffusion layer of the first surface of this base material, this diffusion layer has concaveconvex structure and is made of the first hardcoat layer that comprises organic granular; And the anti-scratch layer that (c) is positioned at the second surface of this base material, this anti-scratch layer has a smooth surface and is made of the second hardcoat layer; Wherein the organic granular that comprised of this first hardcoat layer is polyacrylate resin, its acrylic ester monomer that comprises the acrylic ester monomer of at least a monofunctional and at least a multiple functional radical is as polymerized unit, and wherein the acrylic ester monomer of all multiple functional radicals accounts for total monomer weight portion about 30% to 70%; This organic granular has single mean grain size, and the size distribution of this organic granular drops in about ± 5% scope of this mean grain size, the acrylic ester monomer of described monofunctional is selected from by methyl methacrylate, butyl methacrylate, the 2-phenoxyethyl acrylate, ethoxyquin 2-phenoxyethyl acrylate, 2-(2-ethoxy ethoxy) ethyl propylene acid esters, ring trimethylolpropane dimethoxym ethane acrylate, β-propyloic acrylic ester, the lauric acid methacrylate, isooctyl acrylate, the stearic acid methacrylate, the isodecyl acrylate, the isobornyl methacrylate, the benzyl acrylate, 2-hydroxyethyl methacrylate phosphate, hydroxy-ethyl acrylate, the group that methacrylic acid-2-hydroxy methacrylate and composition thereof is formed, the acrylic ester monomer of described multiple functional radical is selected from by 3-hydroxyl-2,2-neopentanoic acid 3-hydroxyl-2,2-dimethyl propyl ester diacrylate, ethoxyquin 1, the 6-hexanediyl ester, propylene glycol diacrylate, tristane dimethanol diacrylate, the ethoxyquin propylene glycol diacrylate, neopentylglycol diacrylate, the third oxidation neopentylglycol diacrylate, the ethoxyquin bisphenol a dimethacrylate, the 2-methyl isophthalic acid, the ammediol diacrylate, ethoxyquin-2-methyl isophthalic acid, the ammediol diacrylate, 2-butyl-2-ethyl-1, the ammediol diacrylate, ethylene glycol dimethacrylate, the diethylene glycol dimethylacrylate, three (2-hydroxyethyl) isocyanuric acid triacrylate, pentaerythritol triacrylate, the ethoxyquin trimethylolpropane triacrylate, the third oxidation trimethylolpropane triacrylate, trimethylol-propane trimethacrylate, tetramethylol methane tetraacrylate, the ethoxyquin tetramethylol methane tetraacrylate, two-trimethylolpropane tetra-acrylate, the third oxidation tetramethylol methane tetraacrylate, tetramethylol methane tetraacrylate, dipentaerythritol acrylate, the tripropylene glycol dimethylacrylate, 1, the 4-butanediol dimethylacrylate, 1, the 6-hexanediol dimethacrylate, allylation dimethacrylate cyclohexyl, the dimethacrylate isocyanuric acid ester, the ethoxylated trimethylolpropane trimethyl acrylic ester, the propoxylated glycerol trimethyl acrylic ester, trimethylol-propane trimethacrylate, the group that three propylene oxygen ethyl isocyanuric acid esters and composition thereof are formed.
The beneficial effect of technical scheme provided by the invention is:
Anti-scratch blooming provided by the invention contains the uniform organic granular of particle diameter, has reduced the part light source waste that varies in size and cause because of grain diameter, thereby has promoted the briliancy of blooming.
Simultaneously, anti-scratch blooming provided by the invention comprises the organic granular of high-crosslinking-degree, improved the solvent resistance of organic granular, prevented that organic granular is because of producing the optical property instability that the swelling phenomenon makes film, and improved the hardness of organic granular by the degree of crosslinking that promotes organic granular, and then promoted the scratch resistance and the fastness to rubbing of organic granular.
Anti-scratch blooming provided by the invention has good optical characteristics and practicality, can be applicable in the backlight module of LCD and notebook computer, can spread light effectively, and has good briliancy.
Description of drawings
Fig. 1 is the rough schematic of the contained various bloomings of backlight module of the prior art;
The structural representation of the preferable anti-scratch blooming that Fig. 2 provides for the embodiment of the invention;
The anti-scratch blooming that Fig. 3 provides for the embodiment of the invention is in conjunction with the structural representation of condensing film;
The structural representation of diffusion barrier is descended in the anti-scratch blooming combination that Fig. 4 provides for the embodiment of the invention.
The primary clustering symbol description:
1 reflectance coating
2 light guide plate
3 times diffusion barriers
4 and 5 condensing films
6 protection diffusion barriers
11 anti-scratch layers
12 base materials
13 diffusion layers
14 organic granulars
15 first surfaces
16 second surfaces
300 condensing films
400 times diffusion barriers
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below anti-scratch blooming provided by the present invention is described in detail in conjunction with the accompanying drawings in detail with preferred embodiment.
A preferable enforcement state of the anti-scratch blooming that Fig. 2 provides for the embodiment of the invention.As shown in Figure 2, the anti-scratch blooming of the present invention comprises a base material 12 with first surface 15 and second surface 16, wherein the first surface 15 of base material 12 above be diffusion layer 13 with concaveconvex structure, this diffusion layer comprises organic granular 14, and the top of the second surface 16 of base material then is the anti-scratch layer 11 with smooth surface.
The employed base material 12 of the anti-scratch blooming that the embodiment of the invention provides can be the current material that any those of ordinary skill of the technical field of the invention can obtain, for example glass or plastics.Above-mentioned plastic basis material there is no particular restriction, such as but not limited to: vibrin (polyester resin), as polyethylene terephthalate (polyethylene terephthalate, PET) or Polyethylene Naphthalate (polyethylene naphthalate, PEN); Polymethacrylate resin (polymethacrylate resin), as polymethylmethacrylate (polymethyl methacrylate, PMMA); Polyimide resin (polyimide resin); Polystyrene resin (polystyrene resin); Poly-cyclic olefin resins (polycycloolefin resin); Polyolefin resin (polyolefin resin); Polycarbonate resin (polycarbonateresin); Polyurethane resin (polyurethane resin); Triafol T (triacetate cellulose, TAC); Or the potpourri of above-mentioned material.Its effect is good with polyethylene terephthalate, polymethylmethacrylate, poly-cyclic olefin resins, Triafol T or its potpourri, is more preferred from polyethylene terephthalate.The thickness of base material depends on the demand of the optical articles of wishing to get usually, and this thickness is better to the effect between about 250 μ m at about 16 μ m.
When using plastic basis material, form the hardcoat layer in the plastic basis material surface, can strengthen hardness and avoid the substrate surface scratch, to reach the scratch resistance effect.Simultaneously when avoiding solidifying, stress is inhomogeneous and produce warpage, and the present invention can be by handling first surface 15 and the second surface 16 formation first hardcoat layer and the second hardcoat layers at base material 12 with hardcoat liquid with heating and two (dual curing) modes of solidifying of ultraviolet ray.In order to form this first and the hardcoat liquid of this second hardcoat layer can be identical or inequality, it comprises antistatic agent, ultraviolet hardening resin and at least a many groups resin that is made of thermoset resin, thermoplastic resin and composition thereof that is selected from.Reasonable above-mentioned hardcoat liquid comprises electrostatic agent, ultraviolet hardening resin and thermoset resin.Utilize high strength that thermoset resin has and good toughness, can make prepared hardcoat layer have remarkable thermotolerance and minimum volumetric shrinkage.
The antistatic agent that uses in the hardcoat liquid of the embodiment of the invention does not have particular restriction, be antistatic agent well known to those skilled in the art, for example ethoxy fatty acid glyceride class, quaternary ammonium compound compound, fatty amine analog derivative, epoxy resin (as polyethylene oxide), siloxane (siloxane) or other alcohol derivatives are as poly-ethanol ester, polyglycol ether etc.
The ultraviolet hardening resin that uses in the hardcoat liquid of the embodiment of the invention comprises at least a acrylic monomer or acrylic ester monomer with one or more functional groups, is preferably acrylic ester monomer.The acrylic ester monomer that the embodiment of the invention can be used, such as but not limited to, methacrylate monomers, acrylate monomer, amido formate acrylate (urethaneacrylate) monomer, polyester acrylate (polyester acrylate) monomer or epoxy acrylate (epoxy acrylate) monomer etc. are preferably acrylate monomer.
For example: the acrylic ester monomer that is applicable to the ultraviolet hardening resin of the embodiment of the invention can be selected from and comprise methyl methacrylate, butyl methacrylate, 2-phenoxyethyl acrylate (2-phenoxy ethyl acrylate), ethoxyquin 2-phenoxyethyl acrylate (ethoxylated 2-phenoxy ethyl acrylate), 2-(2-ethoxy ethoxy) ethyl propylene acid esters (2-(2-ethoxyethoxy) ethyl acrylate), ring trimethylolpropane dimethoxym ethane acrylate (cyclictrimethylolpropane formal acrylate), β-propyloic acrylic ester (β-carboxyethyl acrylate), lauric acid methacrylate (lauryl methacrylate), isooctyl acrylate (isooctyl acrylate), stearic acid methacrylate (stearyl methacrylate), isodecyl acrylate (isodecyl acrylate), isobornyl methacrylate (isoborny methacrylate), benzyl acrylate (benzyl acrylate), 3-hydroxyl-2,2-neopentanoic acid 3-hydroxyl-2,2-dimethyl propyl ester diacrylate (hydroxypivalyl hydroxypivalate diacrylate), ethoxyquin 1, (ethoxylated 1 for the 6-hexanediyl ester, 6-hexanediol diacrylate), propylene glycol diacrylate (dipropylene glycol diacrylate), tristane dimethanol diacrylate (Tricyclodecanedimethanol diacrylate), ethoxyquin propylene glycol diacrylate (ethoxylated dipropylene glycoldiacrylate), neopentylglycol diacrylate (neopentyl glycol diacrylate), the third oxidation neopentylglycol diacrylate (propoxylated neopentyl glycol diacrylate), ethoxyquin bisphenol a dimethacrylate (ethoxylated bisphenol-A dimethacrylate), the 2-methyl isophthalic acid, ammediol diacrylate (2-methyl-1,3-propanediol diacrylate), ethoxyquin-2-methyl isophthalic acid, ammediol diacrylate (ethoxylated 2-methyl-1,3-propanediol diacrylate), 2-butyl-2-ethyl-1, ammediol diacrylate (2-butyl-2-ethyl-1,3-propanediol diacrylate), ethylene glycol dimethacrylate (ethyleneglycol dimethacrylate), diethylene glycol dimethylacrylate (diethylene glycol dimethacrylate), 2-hydroxyethyl methacrylate phosphate (2-hydroxyethyl metharcrylate phosphate), three (2-hydroxyethyl) isocyanuric acid triacrylate (Tris (2-hydroxy ethyl) isocyanurate triacrylate), pentaerythritol triacrylate (pentaerythritol triacrylate), ethoxyquin trimethylolpropane triacrylate (ethoxylatedtrimethylolpropane triacrylate), the third oxidation trimethylolpropane triacrylate (propoxylatedtrimethylolpropane triacrylate), trimethylol-propane trimethacrylate (trimethylolpropanetrimethacrylate), tetramethylol methane tetraacrylate (pentaerythritol tetraacrylate), ethoxyquin tetramethylol methane tetraacrylate (ethoxylated pentaerythritol tetraacrylate), two-trimethylolpropane tetra-acrylate (ditrimethylolpropane tetraacrylate), the third oxidation tetramethylol methane tetraacrylate (propoxylatedpentaerythritol tetraacrylate), tetramethylol methane tetraacrylate (pentaerythritol tetraacrylate), dipentaerythritol acrylate (dipentaerythritol hexaacrylate), methacrylic acid, hydroxy-ethyl acrylate (hydroxyethyl acrylate, HEA), methacrylic acid-2-hydroxy methacrylate (2-hydroxyethyl methacrylate, HEMA), tripropylene glycol dimethylacrylate (tripropylene glycol dimethacrylate), 1,4-butanediol dimethylacrylate (1,4-butanediol dimethacrylate), 1,6-hexanediol dimethacrylate (1,6-hexanediol dimethacrylate), allylation dimethacrylate cyclohexyl (allylated cyclohexyldimethacrylate), dimethacrylate isocyanuric acid ester (isocyanurate dimethacrylate), ethoxylated trimethylolpropane trimethyl acrylic ester (ethoxylated trimethylol propane trimethacrylate), propoxylated glycerol trimethyl acrylic ester (propoxylated glycerol trimethacrylate), trimethylol-propane trimethacrylate (trimethylol propane trimethacrylate), the group that three (propylene oxygen ethyl) isocyanuric acid ester (tris (acryloxyethyl) isocyanurate) and composition thereof is formed.This acrylic ester monomer comprises dipentaerythritol acrylate, trimethylolpropane triacrylate and pentaerythritol triacrylate preferably.
For increasing the film forming of hardcoat liquid, the employed ultraviolet hardening resin of the embodiment of the invention can comprise molecular weight as required at about 103 to about 104 oligomer, this type of oligomer is familiar with for those skilled in the art, acrylic ester oligomer for example, this acrylic ester oligomer includes but not limited to: the amido formate acrylate, as fatty amine carbamate acrylate (aliphatic urethane acrylate), fatty amine carbamate six acrylate (aliphatic urethanehexaacrylate), aromatic amine carbamate six acrylate (aromatic urethane hexaacrylate); Epoxy acrylate is as bisphenol-A epoxy diacrylate (bisphenol-A epoxy diacrylate), phenolic aldehyde epoxy acrylate (novolac epoxy acrylate); Polyester acrylate is as polyester diacrylate (polyester diacrylate); Or pure acrylic acid ester.
The mean molecular weight of the thermoset resin that uses in the hardcoat liquid of the embodiment of the invention is generally about 10
4To about 2 * 10
5Between, preferably about 2 * 10
4To about 3 * 10
5Between, better about 4 * 10
4To about 10
5Between.Thermoset resin of the present invention is optional from containing hydroxyl (OH) and/or the carboxyl (group that vibrin COOH), epoxy resin, polymethacrylate resin, polyamide resin, fluoroplast, polyimide resin, polyurethane resin, alkyd resin (alkyd resin) and composition thereof are formed, be preferably contain hydroxyl (OH) and/or carboxyl (polymethacrylate resin COOH) or polyacrylate resin are as the polymethylacrylic acid polyol resin.
The optional autopolyester resin of the thermoplastic resin that uses in the hardcoat liquid of the embodiment of the invention, polymethacrylate resin are as polymethylmethacrylate (PMMA); It perhaps is the potpourri that vibrin and polymethacrylate resin are formed.
The hardcoat liquid that is used to form the first hardcoat layer and the second hardcoat layer in the above embodiment of the present invention, also can comprise the adjuvant that those of ordinary skills know as required, for example, including but not limited to rigidizer (curing agent), light trigger (photo initiator), fluorescer, ultraviolet light absorber, leveling agent, wetting agent, spreading agent, stabilization agent or inorganic particles etc.
The employed rigidizer of the embodiment of the invention is a rigidizer of the prior art, it can make molecule and intermolecular generation chemical bond and form crosslinked (crosslinking), for example, this rigidizer includes but not limited to diisocyanate (diisocyanate) or polyisocyanate (polyi socyanate).
The employed light trigger of the embodiment of the invention is can produce free radical after rayed, and sees through the light trigger of the transmission initiated polymerization of free radical.The light trigger that is applicable to the embodiment of the invention there is no particular restriction, for example, but be not limited to benzophenone (benzophenone), diphenylhydroxyethanone (benzoin), 2-hydroxy-2-methyl-1-phenyl third-1-ketone (2-hydroxy-2-methyl-1-phenyl-propan-1-one), 2,2-dimethoxy-1,2-diphenyl second-1-ketone (2,2-dimethoxy-1,2-diphenylethan-1-one), 1-hydroxycyclohexylphenylketone (1-hydroxy cyclohexylphenyl ketone), 2,4,6-trimethylbenzene first anilide diphenyl phosphine oxide (2, the potpourri of one or more 4,6-trimethylbenzoyl diphenylphosphine oxide).Light trigger is benzophenone or 1-hydroxycyclohexylphenylketone preferably.
The fluorescer that is used for the embodiment of the invention there is no particular restriction, be that the persons of ordinary skill in the technical field of the present invention uses always, can be organism, such as but not limited to the two triazines (diphenylethylene bistriazines) of benzoxazoles class (benzoxazoles), benzimidazole (benzimidazoles) or talan; Can be inorganics perhaps, such as but not limited to zinc sulphide.
The ultraviolet light absorber that is used for the embodiment of the invention, be that the technical field of the invention technician uses always, for example, benzotriazole (benzotriazoles), phentriazine class (benzotriazines), Benzophenone class (benzophenones) or salicyclic acid derivatives (salicylic acid derivatives) etc.
In addition, when base material is plastic basis material, for avoiding the plastic basis material yellow, can in hardcoat liquid, add the inorganic particles that tool absorbs ultraviolet ability as required, such as but not limited to zinc paste, strontium titanates, zirconia, aluminium oxide, titania, calcium sulphate, barium sulphate, lime carbonate or its potpourri, be preferably titania, zirconia, aluminium oxide, zinc paste or its potpourri.The particle diameter of above-mentioned inorganic particles is generally about 1 nanometer, and (nanometer nm), is preferably about 20 nanometers to about 50 nanometers to about 100 nanometers.
For reaching the light diffusion effect, form the micro concavo-convex structure at the first surface 15 of base material 12 with the first hardcoat layer, as diffusion layer 13.This diffusion layer formation method there is no particular restriction, is that the technical staff in the technical field of the invention knows, such as but not limited to screen painting, coating, spraying or embossing processing etc.According to the present invention, the generation type of this diffusion layer 13 is by be coated with the first hardcoat layer that contains organic particle 14 has concaveconvex structure with formation diffusion layer 13 on the first surface 15 of base material 12.This diffusion layer must be able to allow light see through, and preferably selects water whitely, and its thickness is preferably between about 5 to about 10 microns between about 2 to about 20 microns.
According to the embodiment of the invention, the shape of a plurality of organic granulars 14 that this diffusion layer 13 is comprised there is no particular restriction, for example can be spheroidal, oval sphere or irregular shape etc., is preferably spheroidal.These organic granulars have single mean grain size, and mean grain size is between about 2 microns (μ m) are to about 20 microns, preferably between about 5 microns to about 10 microns.These organic granulars more preferably have about 5,8 and 10 microns mean grain size.These organic granulars have the light scatter effect.In order to improve the briliancy of anti-scratch blooming, the employed organic granular of the embodiment of the invention has high-homogenized particle diameter, wherein this high-homogenized particle diameter refers to that the size distribution of these organic granulars falls within the scope of its mean grain size about ± 5% preferable falling within pact ± 4% scope.For example, when to use mean grain size be 10 microns organic granular, the size distribution of a plurality of organic granulars that this diffusion layer comprised was about about 9.5 μ m the scope to the 10.5 μ m.With the mean grain size of using in the prior art is that 15 microns and size distribution are that the organic granular of 1 to 30 micrometer range is compared, organic granular of the present invention has single mean grain size value, and particle size distribution range is narrow, so the present invention can avoid having big difference because of the organic granular size, make the light scatter scope excessive and cause light source waste, so can improve the briliancy of anti-scratch blooming.
The distribution of the organic granular of the embodiment of the invention in diffusion layer there is no particular restriction, but preferably respectively as shown in Figure 2, organic granular is individual layer and evenly distributes.Individual layer evenly distributes except reducing the raw materials cost, can also reduce the light source waste, and then promotes the briliancy of anti-scratch blooming.These organic granulars are the organic granular of about 0.1 weight portion of per 100 weight portion hardcoat liquid solids to about 28 weight portions with respect to the amount of the hardcoat liquid solid that forms this first hardcoat layer.
The employed organic granular of the embodiment of the invention is a polyacrylate resin, its acrylic ester monomer that comprises the acrylic ester monomer of at least a monofunctional and at least a multiple functional radical is as polymerized unit, and wherein the acrylic ester monomer of all multiple functional radicals accounts for total monomer weight portion about 30% to 70%.The embodiment of the invention is used at least a monomer with multiple functional radical, makes and carries out cross-linking reaction between monomer, to increase the degree of crosslinking of prepared organic particle.And then can increase the hardness of organic granular, promote its its scratch resistance, fastness to rubbing and solvent resistance.
The acrylic ester monomer that is applicable to the monofunctional of the embodiment of the invention can be selected from but be not limited to, by methyl methacrylate (methyl methacrylate; MMA), butyl methacrylate, 2-phenoxyethyl acrylate (2-phenoxy ethylacrylate), ethoxyquin 2-phenoxyethyl acrylate (ethoxylated 2-phenoxy ethyl acrylate), 2-(2-ethoxy ethoxy) ethyl propylene acid esters (2-(2-ethoxyethoxy) ethyl acrylate), ring trimethylolpropane dimethoxym ethane acrylate (cyclic trimethylolpropane formal acrylate), β-propyloic acrylic ester (β-carboxyethyl acrylate), lauric acid methacrylate (lauryl methacrylate), isooctyl acrylate (isooctyl acrylate), stearic acid methacrylate (stearyl methacrylate), isodecyl acrylate (isodecyl acrylate), isobornyl methacrylate (isoborny methacrylate), benzyl acrylate (benzyl acrylate), 2-hydroxyethyl methacrylate phosphate (2-hydroxyethyl metharcrylatephosphate), hydroxy-ethyl acrylate (hydroxyethyl acrylate, HEA), methacrylic acid-2-hydroxy methacrylate (2-hydroxyethyl methacrylate, the group that HEMA) and composition thereof is formed.
The acrylic ester monomer that is applicable to the multiple functional radical of the embodiment of the invention can be selected from but be not limited to, by 3-hydroxyl-2,2-neopentanoic acid 3-hydroxyl-2,2-dimethyl propyl ester diacrylate (hydroxypivalyl hydroxypivalate diacrylate), ethoxyquin 1,6-hexanediyl ester (ethoxylated1,6-hexanediol diacrylate), propylene glycol diacrylate (dipropylene glycol diacrylate), tristane dimethanol diacrylate (Tricyclodecanedimethanol diacrylate), ethoxyquin propylene glycol diacrylate (ethoxylated dipropylene glycoldiacrylate), neopentylglycol diacrylate (neopentyl glycol diacrylate), the third oxidation neopentylglycol diacrylate (propoxylated neopentyl glycol diacrylate), ethoxyquin bisphenol a dimethacrylate (ethoxylated bisphenol-A dimethacrylate), the 2-methyl isophthalic acid, ammediol diacrylate (2-methyl-1,3-propanediol diacrylate), ethoxyquin-2-methyl isophthalic acid, ammediol diacrylate (ethoxylated 2-methyl-1,3-propanediol diacrylate), 2-butyl-2-ethyl-1, ammediol diacrylate (2-butyl-2-ethyl-1,3-propanediol diacrylate), ethylene glycol dimethacrylate (ethyleneglycol dimethacrylate; EGDMA), diethylene glycol dimethylacrylate (diethylene glycoldimethacrylate), three (2-hydroxyethyl) isocyanuric acid triacrylate (Tris (2-hydroxy ethyl) isocyanuratetriacrylate), pentaerythritol triacrylate (pentaerythritol triacrylate), ethoxyquin trimethylolpropane triacrylate (ethoxylated trimethylolpropane triacrylate), the third oxidation trimethylolpropane triacrylate (propoxylated trimethylolpropane triacrylate), trimethylol-propane trimethacrylate (trimethylolpropane trimethacrylate), tetramethylol methane tetraacrylate (pentaerythritoltetraacrylate), ethoxyquin tetramethylol methane tetraacrylate (ethoxylated pentaerythritoltetraacrylate), two-trimethylolpropane tetra-acrylate (ditrimethylolpropane tetraacrylate), the third oxidation tetramethylol methane tetraacrylate (propoxylated pentaerythritol tetraacrylate), tetramethylol methane tetraacrylate (pentaerythritol tetraacrylate), dipentaerythritol acrylate (dipentaerythritolhexaacrylate), tripropylene glycol dimethylacrylate (tripropylene glycol dimethacrylate), 1,4-butanediol dimethylacrylate (1,4-butanediol dimethacrylate), 1,6-hexanediol dimethacrylate (1,6-hexanediol dimethacrylate), allylation dimethacrylate cyclohexyl (allylated cyclohexyldimethacrylate), dimethacrylate isocyanuric acid ester (isocyanurate dimethacrylate), ethoxylated trimethylolpropane trimethyl acrylic ester (ethoxylated trimethylol propane trimethacrylate), propoxylated glycerol trimethyl acrylic ester (propoxylated glycerol trimethacrylate), trimethylol-propane trimethacrylate (trimethylol propane trimethacrylate), the group that three (propylene oxygen ethyl) isocyanuric acid ester (tris (acryloxyethyl) isocyanurate) and composition thereof is formed.
According to above-mentioned preferable enforcement state, the organic granular 14 that is comprised in the diffusion layer is preferably by comprising the polyacrylate resin particle that methyl methacrylate monomer and ethylene glycol dimethacrylate monomer are constituted, wherein the weight ratio of methyl methacrylate and ethylene glycol dimethacrylate can be 70:30,60:40,50:50,40:60 or 30:70 etc., consumption when the ethylene glycol dimethacrylate monomer, be at about 30% to about 70% o'clock of the total monomer consumption, its degree of crosslinking is preferable.
Another preferable enforcement state according to the embodiment of the invention, when the hardcoat liquid that is used to form the first hardcoat layer contains rigidizer, be the adherence between the rigidizer of the hardcoat liquid that increases the organic granular 14 and the first hardcoat layer, organic granular 14 can further contain carboxyl (COOH), hydroxyl (OH), amido (reactive functional group group NH2), for example use methacrylic acid-2-hydroxy methacrylate (2-hydroxyethyl methacrylate, HEMA) or monomer such as methacrylic acid prepare organic granular.
For preventing anti-scratch blooming of the present invention by other diaphragm scratch, the embodiment of the invention has the anti-scratch layer 11 of smooth surface at the second surface 16 coatings second hardcoat layer of base material 12 with formation.The thickness of this anti-scratch layer 11 is between about 1 micron to about 10 microns, preferably between about 3 microns to about 6 microns.
The diffusion layer of the anti-scratch blooming of the embodiment of the invention or anti-scratch layer can be familiar with the known any way manufacturing of technician of this technology according to this area, for example, and can be by comprising the method manufacturing of following steps:
(I) with ultraviolet hardening resin, at least a components such as resin, organic granular, solvent and antistatic agent that are selected from by group that thermoset resin, thermoplastic resin and composition thereof constitute, can mix with existing adjuvant as required, form a colloidal state hardcoat liquid;
(II) this hardcoat liquid is coated on substrate surface, forms a coating;
(III) send this to dryer through being coated in base material, evaporating solvent, be warming up to the solidification temperature that is higher than thermoset resin after, heated several minutes, carry out the heat curing polyreaction;
(IV) and then to this coating irradiation energy ray produce photopolymerization reaction to form the hardcoat layer, the intensity of energy-ray can be about 100 to about 1000 millijoules/square centimeter (mJ/cm
2), be preferably about 200 to about 800mJ/cm
2
If need, can repeat above steps, to obtain the hardcoat layer of multilayer.
The anti-scratch blooming of the embodiment of the invention has good light penetration degree, that is, measure according to JIS K7136 standard method, has the penetration between about 70% to about 95%.In addition, be the prism striped of atomizing condensing film, anti-scratch blooming of the present invention has the light diffusion of some degree, that is, measure according to JIS K7136 standard method, has about 8% to about 97% mist degree, is preferably about 30% to about 75%.The anti-scratch blooming of the embodiment of the invention in addition, wherein the surface resistivity of this first and second hardcoat layer is about 10
8To about 10
12Ohm-sq (also can be expressed as Ω/), and measure according to JIS K5400 standard method, have about 3H or above pencil hardness.
The anti-scratch blooming of the embodiment of the invention can be used in the backlight module with condensing film, is arranged on the exiting surface of condensing film.As shown in Figure 3, can be on condensing film 300 storehouse anti-scratch blooming as shown in Figure 2.The anti-scratch blooming of the present invention forms the hardcoat layer at substrate surface with the coating of novel hardcoat liquid, can improve hardness effectively, the protection contact member, and surfacing do not have warpage, therefore can avoid optical property to be affected.In addition; the anti-scratch blooming of the embodiment of the invention is because substrate surface is coated with the coating of tool micro concavo-convex structure; therefore also has diffusion; and because the organic granular of coating size evenly; reduce the waste of part light source; and then improve the briliancy of blooming, can be used in the backlight module of display as the protectiveness diffusion barrier.
In addition, in various blooming pieces, the condensing film price is higher relatively, therefore in the backlight modular structure of new development, in order to reduce cost, does to change to replace condensing film sometimes in other blooming piece and combination thereof.For example the design with two or three diffusion barriers replaces previous condensing film and its design of each a slice diffusion barrier up and down.
Because anti-scratch blooming of the present invention is with the diffusion effect of light of excellence, and good briliancy, therefore, as shown in Figure 4, also can be on following diffusion barrier 400 direct storehouse provided by the invention anti-scratch blooming as shown in Figure 2, replace the previous design of using condensing film to add other diffusion barrier.
Following example is used for that the invention will be further described, is not to be used for limiting the scope of the invention.Any simple modification that the technician carried out or conversion of being familiar with this technology includes in the protection domain of disclosed content of this instructions and claim.
Preparation example 1
Ultraviolet hardening resin prescription A modulation: get one 250 milliliters vial, 40 gram toluene solvants are added in the vial.Under high-speed stirred, add acrylic ester monomer in regular turn: 10 gram dipentaerythritol acrylates, 2 gram trimethylolpropane triacrylates, 14 gram pentaerythritol triacrylates, oligomer: 30 gram aliphatics ammonia esters, six acrylate [Etercure 6145-100, Eternal company], light trigger: 4 gram 1-hydroxycyclohexylphenylketones, last infusion become solid about 60% and the about 100 gram ultraviolet hardening resin prescription A of gross weight.
Preparation example 2
Ultraviolet hardening resin prescription B modulation: get one 250 milliliters vial, with solvent: 34 gram toluene and 6 gram butanone add in the vials.Under high-speed stirred, add acrylic ester monomer in regular turn: 16 gram dipentaerythritol acrylates, 2 gram trimethylolpropane triacrylates, 20 gram pentaerythritol triacrylates, oligomer: 18 gram aliphatics ammonia esters, six acrylate [Etercure6112-100, Eternal company], light trigger: 4 gram 1-hydroxycyclohexylphenylketones, last infusion become solid about 60% and the about 100 gram ultraviolet hardening resin prescription B of gross weight.
Preparation example 3
The first hardcoat layer (diffusion layer)
Get one 250 milliliters vial, with solvent: 24 gram toluene and 8 gram butanone add in the vials.The mean grain sizes that add 4 grams under high-speed stirred in regular turn are acryl particulate [SSX-108, Japanese Sekisui company] [the high-crosslinking-degree organic granular that is made of methyl methacrylate and the ethylene glycol dimethacrylate monomer of weight ratio 50:50 of 8 μ m; Particle size is 8 μ m ± 5%], 40 restrain example 1 ultraviolet hardening resin prescription A (solid about 60% fully, Eternal company), thermoset resin: 20 gram polymethylacrylic acid polyol resin [Eterac 7361-ts-50, Eternal company] (solid about 50%), [Desmodur 3390 to add 2 gram rigidizers again, Bayer company] (solid about 75%), 2 gram antistatic agent [GMB-36M-AS, Marubishioil Chem.Co., Ltd] (solid about 20%), last infusion becomes solid about 40% and the about 100 gram coating of gross weight.Paint daubs #6 with RDS (U.S. R.D.Specialties company) is coated on the PET (polyethylene terephthalate that thickness is 188 μ m with coating; Polyethylene terephthalate) on base material [U34, the Toray company] surface, through 110 ℃ of dryings after 1 minute, again with UV (ultraviolet ray; Ultraviolet) exposure bench (Fusion UV, F600V, 600W/inch, H type lamp source) power is set at 100%, speed 15m/min, and energy-ray 200mJ/cm2 makes the first hardcoat layer (diffusion layer) that coating thickness is about 8 μ m after the drying in addition.
Preparation example 4
The first hardcoat layer (diffusion layer)
Get one 250 milliliters vial, with solvent: 24 gram toluene and 8 gram butanone add in the vials.The mean grain sizes that add 6 grams under high-speed stirred in regular turn are acryl particulate [SSX-108, Japanese Sekisui company] [the high-crosslinking-degree organic granular that is made of methyl methacrylate and the ethylene glycol dimethacrylate monomer of weight ratio 50:50 of 8 μ m; Particle size is 8 μ m ± 5%], 40 restrain example 1 ultraviolet hardening resin prescription A (solid about 60% fully, Eternal company), thermoset resin: 20 gram polymethylacrylic acid polyol resin [Eterac 7361-ts-50, Eternal company] (solid about 50%), [Desmodur 3390 to add 2 gram rigidizers again, Bayer company] (solid about 75%), 2 gram antistatic agent [GMB-36M-AS, Marubishioil Chem.Co., Ltd] (solid about 20%), last infusion becomes solid about 40% and the about 102 gram coating of gross weight.With RDS paint daubs #6 coating is coated on the PET base material [U34 that thickness is 188 μ m, Toray company] on the surface, through 110 ℃ of dryings after 1 minute, again with UV exposure bench (Fusion UV, F600V, 600W/inch, H type lamp source) power is set at 100%, speed 15m/min, energy-ray 200mJ/cm
2, make the first hardcoat layer (diffusion layer) that coating thickness is about 8 μ m after the drying in addition.
Preparation example 5
The first hardcoat layer (diffusion layer)
Get one 250 milliliters vial, with solvent: 24 gram toluene and 8 gram butanone add in the vials.The mean grain sizes that add 10 grams under high-speed stirred in regular turn are acryl particulate [SSX-108, Japanese Sekisui company] [the high-crosslinking-degree organic granular that is made of methyl methacrylate and the ethylene glycol dimethacrylate monomer of weight ratio 50:50 of 10 μ m; Particle size is 10 μ m ± 5%], 40 restrain example 1 ultraviolet hardening resin prescription A (solid about 60% fully, Eternal company), thermoset resin: 20 gram polymethylacrylic acid polyol resin [Eterac 7361-ts-50, Eternal company] (solid about 50%), [Desmodur 3390 to add 2 gram rigidizers again, Bayer company] (solid about 75%), 2 gram antistatic agent [GMB-36M-AS, Marubishioil Chem.Co., Ltd] (solid about 20%), last infusion becomes solid about 40% and the about 106 gram coating of gross weight.With RDS paint daubs #6 coating is coated on the PET base material [U34 that thickness is 188 μ m, Toray company] on the surface, through 110 ℃ of dryings after 1 minute, again with UV exposure bench (Fusion UV, F600V, 600W/inch, H type lamp source) power is set at 100%, speed 15m/min, energy-ray 200mJ/cm
2, make the first hardcoat layer (diffusion layer) that coating thickness is about 8 μ m after the drying in addition.
The second hardcoat layer (anti-scratch layer)
Get one 250 milliliters vial, 26 gram butanone solvents are added in the vial.Add ultraviolet hardening resin under high-speed stirred in regular turn: 26 restrain example 2 ultraviolet hardening resins prescription B (solid about 60% fully, Eternal company), thermoset resin: 26 gram polymethylacrylic acid polyol resin [Eterac 7365-s-30, Eternal company] (solid about 30%), [Desmodur 3390 to add 2 gram rigidizers again, Bayer company] (solid about 75%), 2 gram antistatic agent [GMB-36M-AS, Marubishioil Chem.Co., Ltd] (solid about 20%), last infusion becomes solid about 30% and the about 80 gram coating of gross weight.With RDS paint daubs #6 coating is coated on respectively on the prepared PET base material opposite side surface that scribbles the first hardcoat layer of above-mentioned preparation example 3,4 and 5, through 110 ℃ of dryings after 1 minute, again with UV exposure bench (Fusion UV, F600V, 600W/inch, H type lamp source) power is set at 100%, speed 15m/min, energy-ray 200mJ/cm
2, make the second hardcoat layer (anti-scratch layer) that coating thickness is respectively about 6 μ m after the drying in addition.The above-mentioned anti-scratch blooming embodiment 1,2 and 3 that makes adds up to total film thickness to be respectively 202,202, and 202 μ m carry out every attribute testing, and test gained result as shown in the following Table 1.
Comparative example 1
Getting thickness is the commercially available protectiveness diffusion barrier [PBS632L, Keiwa company] of 200 μ m, comprises the organic granular of the size distribution with 1 to 10 μ m in the diffusion layer on its substrate surface.Should carry out every attribute testing by commercially available protectiveness diffusion barrier, test gained result as shown in the following Table 1.
Comparative example 2
Getting thickness is the commercially available protectiveness diffusion barrier [D117VGZ, Tsujiden company] of 200 μ m, comprises the poly methyl methacrylate particle of the size distribution with 1 to 20 μ m in the diffusion layer on its substrate surface.Should carry out every attribute testing by commercially available protectiveness diffusion barrier, test gained result as shown in the following Table 1.
Comparative example 3
Getting thickness is the commercially available protectiveness diffusion barrier [JS-153R, SKC company] of 205 μ m, comprises the poly methyl methacrylate particle of the size distribution with 1 to 20 μ m in the diffusion layer on its substrate surface.Should carry out every attribute testing by commercially available protectiveness diffusion barrier, test gained result as shown in the following Table 1.
Method of testing A:
The thickness test: utilize film thickness gauge [PIM-100, TESA company], press down the thickness that embodiment 1 to 3 and comparative example 1 to 3 diaphragm are measured in the way of contact with 1N, its result writes down as above.
Method of testing B:
The test of transparent material brightness: utilize NDH 5000W haze meter [Japanese electric look company],, measure the mist degree (Hz) and the total light transmittance (Tt) of testing sample, shown in the following tabulation 1 of test gained result according to JIS K7136 standard method.
Pencil hardness test: utilize pencil scratching tester [Elcometer 3086, SCRATCH BOY], (2H 3H) with the pencil hardness on JISK-5400 method test testing sample surface, tests shown in the following tabulation 1 of gained result with the Mitsubishi pencil.
Surface resistivity test: utilize teraohmmeter [East Asia TOADKK company, SM8220﹠amp; SME-8310,500V] measurement testing sample surface resistivity.Test environment is as follows: 23 ± 2 ℃, 55 ± 5%RH is shown in the following tabulation 1 of test gained result.
Abrasion Resistance test: (area length and width 20mm * 20mm) goes up and pastes glutinous 3M BEF-III-10T diaphragm (the length and width 20mm * 20mm) that puts in 600 g weight platform to utilize linear abrasion wear test machine [TABER 5750], directly test the weight scratch resistance ability of the anti-scratch layer of testing sample with its water chestnut mirror microstructure layer, with test trip 2inch, the speed of 10cycle/min is carried out 10cycles scratch resistance test, shown in the following tabulation 1 of scratch resistance test gained result.
Camber test: testing sample is cut into the smooth diaphragm of length and width 100mm * 100mm, places 120 ℃ of baking ovens after 10 minutes, take out and be statically placed in room temperature, rise again to room temperature up to diaphragm, with the warpage degree of four jiaos of clearance gauge measuring diaphragms (the record unit: millimetre (mm), recording mode: for example, 0; 0; 0; 0), is used for assessing the heat-resisting and anti-warpage performance of testing sample, shown in the following tabulation 1 of camber test gained result.
Table 1
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Mist degree Hz (%) | 36.30 | 50.35 | 71.30 | 34.20 | 45.71 | 61.44 |
| Total light transmittance Tt (%) | 90.50 | 91.56 | 92.40 | 89.85 | 91.18 | 93.00 |
| Pencil hardness (diffusion layer) | 3H | 3H | 3H | 2H | 2H | 2H |
| Pencil hardness (anti-scratch layer) | 3H | 3H | 3H | 2H | 3H | 2H |
| Surface resistivity ohm-sq (diffusion layer) | 6.5x10 11 | 3.8x10 11 | 4.7x10 11 | 7.4x10 12 | 2.3x10 11 | 6.3x10 16 |
| Surface resistivity ohm-sq (anti-scratch layer) | 7.3x10 10 | 6.5x10 10 | 4.7x10 10 | 1.3x10 12 | 1.8x10 12 | 2.6x10 13 |
| Anti-scratch layer Abrasion Resistance test | No scratch | No scratch | No scratch | Serious scratch | No scratch | Serious scratch |
| Camber test (mm) (120 ℃, 10min) | 0；0； 0；0 | 0；0； 0；0 | 0；0； 0；0 | 0.1；0.1； 0.1；0.1 | 0.1；0.1； 0.1；0.1 | 0.2；0.2； 0.2；0.2 |
According to table 1, by the result of example and comparative example as can be known, anti-scratch blooming of the present invention has good resistance static behaviour and high rigidity characteristic, and surfacing do not have warpage, thereby can avoid optical property to be affected.
Method of testing C:
The diaphragm of example 1 to 3 and comparative example 1 to 3 and diffusion sheet [DI-780A] and condensing film [PF-96S-188] the collocation backlight that Eternal company is produced are combined into various modules, carry out the briliancy analysis again.
" the side type backlight is a benchmark to former backlight: with 22; its unitized construction is to put light guide plate on a slice reflectance coating; reach the light guide plate dual-side and respectively place reflection lampshade and built-in 2 cathode fluorescent tubes of reflection lampshade (CCFL), put a slice diffusion sheet (DI-780A) and a slice rhombus lens (PF-96S-188) on the light guide plate.
Intensity measuring method: with brightness photometer [Topcon company, SC-777] directly over backlight (0 ° of angle) apart from 50 centimeters places of backlight, with the center briliancy (Brightness of 2 ° of angular measurement backlights of brightness photometer; Unit: cd/m
2) and 13 briliancy, wherein 13 briliancy all together degree (Uniformity) account form multiply by 100% (that is briliancy minimum value/briliancy maximal value x 100%) for the briliancy minimum value of gained in the test again divided by the briliancy maximal value.The result is as shown in table 2.
Table 2
| 22 " side type backlight | Center briliancy (Brightness; Cd/m 2) | 13 briliancy are all spent (Uniformity together; %) |
| Former backlight | 6,480 | 85.0 |
| Former backlight adds a slice example 1 diaphragm | 6,350 | 86.3 |
| Former backlight adds a slice example 2 diaphragms | 6,286 | 86.5 |
| Former backlight adds a slice example 3 diaphragms | 6,250 | 86.8 |
| Former backlight adds a slice comparative example 1 diaphragm | 6,220 | 85.8 |
| Former backlight adds a slice comparative example 2 diaphragms | 6,156 | 86.0 |
| Former backlight adds a slice comparative example 3 diaphragms | 5,962 | 86.2 |
As shown in Table 2, former 22 " the center brightness value of side type backlight is 6,480cd/m
2, add a slice example 1 to 3 diaphragm after its center briliancy then be respectively 6,350cd/m
2, 6,286cd/m
2And 6,250cd/m
2Its center briliancy then is respectively 6,220cd/m after adding a slice comparative example 1 to 3 diaphragm
2, 6,156cd/m
2And 5,962cd/m
2As seen example 1 to 3 gained diaphragm of the present invention has briliancy preferably compared to comparative example 1 to 3 diaphragm on former backlight is used.In addition, table 2 data also clearly illustrate, example 1 to 3 gained diaphragm of the present invention also has preferably all degree together of 13 briliancy.Therefore, blooming provided by the invention has good optical characteristics and practicality, can be applicable in the backlight module of LCD and notebook computer, compares with existing blooming, can spread light effectively, and has good briliancy.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (27)
1. anti-scratch blooming comprises:
(a) transparent base, this base material has first surface and second surface;
(b) be positioned at the diffusion layer of the first surface of this base material, this diffusion layer has concaveconvex structure and is made of the first hardcoat layer that comprises organic granular; And
(c) be positioned at the anti-scratch layer of the second surface of this base material, this anti-scratch layer has a smooth surface and is made of the second hardcoat layer;
It is characterized in that, the organic granular that the described first hardcoat layer is comprised is a polyacrylate resin, its acrylic ester monomer that comprises the acrylic ester monomer of at least a monofunctional and at least a multiple functional radical is as polymerized unit, and wherein the acrylic ester monomer of all multiple functional radicals accounts for 30% to 70% of total monomer weight; Described organic granular has single mean grain size, and the size distribution of described organic granular falls within described mean grain size ± 5% scope, the acrylic ester monomer of described monofunctional is selected from by methyl methacrylate, butyl methacrylate, the 2-phenoxyethyl acrylate, ethoxyquin 2-phenoxyethyl acrylate, 2-(2-ethoxy ethoxy) ethyl propylene acid esters, ring trimethylolpropane dimethoxym ethane acrylate, β-propyloic acrylic ester, the lauric acid methacrylate, isooctyl acrylate, the stearic acid methacrylate, the isodecyl acrylate, isobornyl methacrylate Benzyl base acrylate, 2-hydroxyethyl methacrylate phosphate, hydroxy-ethyl acrylate, the group that methacrylic acid-2-hydroxy methacrylate and composition thereof is formed, the acrylic ester monomer of described multiple functional radical is selected from by 3-hydroxyl-2,2-neopentanoic acid 3-hydroxyl-2,2-dimethyl propyl ester diacrylate, ethoxyquin 1, the 6-hexanediyl ester, propylene glycol diacrylate, tristane dimethanol diacrylate, the ethoxyquin propylene glycol diacrylate, neopentylglycol diacrylate, the third oxidation neopentylglycol diacrylate, the ethoxyquin bisphenol a dimethacrylate, the 2-methyl isophthalic acid, the ammediol diacrylate, ethoxyquin-2-methyl isophthalic acid, the ammediol diacrylate, 2-butyl-2-ethyl-1, the ammediol diacrylate, ethylene glycol dimethacrylate, the diethylene glycol dimethylacrylate, three (2-hydroxyethyl) isocyanuric acid triacrylate, pentaerythritol triacrylate, the ethoxyquin trimethylolpropane triacrylate, the third oxidation trimethylolpropane triacrylate, trimethylol-propane trimethacrylate, tetramethylol methane tetraacrylate, the ethoxyquin tetramethylol methane tetraacrylate, two-trimethylolpropane tetra-acrylate, the third oxidation tetramethylol methane tetraacrylate, tetramethylol methane tetraacrylate, dipentaerythritol acrylate, the tripropylene glycol dimethylacrylate, 1, the 4-butanediol dimethylacrylate, 1, the 6-hexanediol dimethacrylate, allylation dimethacrylate cyclohexyl, the dimethacrylate isocyanuric acid ester, the ethoxylated trimethylolpropane trimethyl acrylic ester, the propoxylated glycerol trimethyl acrylic ester, trimethylol-propane trimethacrylate, the group that three propylene oxygen ethyl isocyanuric acid esters and composition thereof are formed.
2. anti-scratch blooming as claimed in claim 1 is characterized in that, the described first hardcoat layer and the second hardcoat layer form by hardcoat liquid is handled with heating and the two curing modes of ultraviolet ray; And in order to the hardcoat liquid that forms the described first hardcoat layer and the second hardcoat layer is identical or inequality, and described hardcoat liquid comprises antistatic agent, ultraviolet hardening resin and at least a resin that is selected from by thermoset resin, thermoplastic resin and group that the two potpourri constitutes.
3. anti-scratch blooming as claimed in claim 1 is characterized in that, described organic granular is the organic granular of per 100 weight portion hardcoat liquid solids, 0.1 weight portion to 28 weight portion with respect to the amount of the hardcoat liquid solid that forms this first hardcoat layer.
4. anti-scratch blooming as claimed in claim 1 is characterized in that, the size distribution of described organic granular fall within mean grain size ± 4% scope in.
5. anti-scratch blooming as claimed in claim 1 is characterized in that, the average particle size range of described organic granular is between 2 microns to 20 microns.
6. anti-scratch blooming as claimed in claim 1 is characterized in that described polyacrylate resin is made of the monomer that comprises methyl methacrylate and ethylene glycol dimethacrylate.
7. anti-scratch blooming as claimed in claim 2 is characterized in that, described antistatic agent is selected from the group that is made up of ethoxy fatty acid glyceride class, quaternary ammonium compound compound, fatty amine analog derivative, polyethylene oxide, siloxane and alcohol derivatives.
8. anti-scratch blooming as claimed in claim 2 is characterized in that, described ultraviolet hardening resin comprises at least a acrylic ester monomer with one or more functional group.
9. anti-scratch blooming as claimed in claim 8 is characterized in that, described acrylic ester monomer is methacrylate, acrylate, amido formate acrylate, polyester acrylate or epoxy acrylate.
10. anti-scratch blooming as claimed in claim 8 is characterized in that described ultraviolet hardening resin further comprises the acrylate oligomer.
11. anti-scratch blooming as claimed in claim 2, it is characterized in that described thermoset resin is selected from the group that is made up of the vibrin that contains hydroxyl and/or carboxyl, epoxy resin, polymethacrylate resin, polyamide resin, fluoroplast, polyimide resin, polyurethane resin, alkyd resin and composition thereof.
12. anti-scratch blooming as claimed in claim 2 is characterized in that described thermoplastic resin is selected from the group that is made up of vibrin, polymethacrylate resin and composition thereof.
13. anti-scratch blooming as claimed in claim 2, it is characterized in that, further comprise the adjuvant that is selected from the group that forms by rigidizer, light trigger, fluorescer, ultraviolet light absorber, leveling agent, wetting agent, spreading agent, stabilization agent and inorganic particles separately in order to the hardcoat liquid that forms the described first hardcoat layer and the second hardcoat layer.
14. anti-scratch blooming as claimed in claim 13 is characterized in that, described rigidizer is diisocyanate or polyisocyanate.
15. anti-scratch blooming as claimed in claim 1 is characterized in that, the material of making of described transparent base is glass or plastics.
16. anti-scratch blooming as claimed in claim 15, it is characterized in that described plastic basis material is selected from the group that is made up of polymethacrylate resin, polycarbonate resin, polystyrene resin, poly-cyclic olefin resins, polyolefin resin, Triafol T, polyimide resin, polyethylene terephthalate resin, Polyethylene Naphthalate resin and composition thereof.
17. anti-scratch blooming as claimed in claim 16 is characterized in that, described plastic basis material is selected from the group that is made up of polyethylene terephthalate resin, polymethylmethacrylate, poly-cyclic olefin resins, Triafol T and composition thereof.
18. anti-scratch blooming as claimed in claim 1 is characterized in that, described anti-scratch layer has 1 micron to 10 microns thickness.
19. anti-scratch blooming as claimed in claim 18 is characterized in that, described anti-scratch layer has 3 microns to 6 microns thickness.
20. anti-scratch blooming as claimed in claim 1 is characterized in that described diffusion layer has 2 microns to 20 microns thickness.
21. anti-scratch blooming as claimed in claim 20 is characterized in that described diffusion layer has 5 microns to 10 microns thickness.
22. anti-scratch blooming as claimed in claim 1 is characterized in that, the surface resistivity of the described first hardcoat layer and the second hardcoat layer is 10
8Ohm-sq to 10
12Ohm-sq.
23. anti-scratch blooming as claimed in claim 1 is characterized in that, the described first hardcoat layer and the second hardcoat layer are measured according to JIS K5400 standard method, have 3H or greater than the pencil hardness of 3H.
24. anti-scratch blooming as claimed in claim 1 is characterized in that, described blooming has 8% to 97% mist degree according to JIS K7136 standard method measurement.
25. anti-scratch blooming as claimed in claim 1 is characterized in that, the organic granular that the described first hardcoat layer is comprised has the single mean grain size between 5 microns to 10 microns.
26. anti-scratch blooming as claimed in claim 1 is characterized in that described organic granular is evenly distributed in the described diffusion layer with individual layer.
27., it is characterized in that described blooming is used for display as the protectiveness diffusion barrier as the described anti-scratch blooming of each claim in the claim 1 to 26.
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| JP5150247B2 (en) * | 2007-12-29 | 2013-02-20 | 株式会社ニデック | Method for producing antiglare hard coat composition and antiglare hard coat composition |
| CN101975973B (en) * | 2010-09-16 | 2013-12-11 | 宁波激智科技股份有限公司 | Optical reflective film, preparation method thereof and liquid crystal display device using same |
| CN102043174B (en) * | 2010-11-05 | 2013-05-29 | 宁波激智新材料科技有限公司 | Microlens array film, preparation method thereof and LCD (Liquid Crystal Display) device |
| TWI459082B (en) * | 2012-05-30 | 2014-11-01 | Au Optronics Corp | Protective film |
| CN102736145A (en) * | 2012-06-29 | 2012-10-17 | 南京第壹有机光电有限公司 | Brightness enhancement film and preparation method thereof, and device using brightness enhancement film |
| CN102778712B (en) * | 2012-08-02 | 2014-12-31 | 昆山乐凯锦富光电科技有限公司 | Optical diffusion barrier |
| JP2017050276A (en) * | 2015-08-19 | 2017-03-09 | Jsr株式会社 | Composition for light guide plate, light guide plate, and edge light type surface light-emitting device |
| CN108690166B (en) * | 2017-04-05 | 2020-09-29 | 宁波激智科技股份有限公司 | High-refractive-index flexible diffusion particle, preparation method thereof and optical film |
| CN111487809A (en) * | 2019-01-25 | 2020-08-04 | 南京瀚宇彩欣科技有限责任公司 | Optical stack structure and display device |
| CN113504590B (en) * | 2021-07-08 | 2023-06-09 | 博讯光电科技(合肥)有限公司 | Preparation method of PET (polyethylene terephthalate) with light scattering porous micro-foaming structure and diffusion film |
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|---|---|
| CN101067665A (en) | 2007-11-07 |
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