CN102759761B - Optical thin film with high covering power and high luminance and display device comprising optical thin film - Google Patents
Optical thin film with high covering power and high luminance and display device comprising optical thin film Download PDFInfo
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- CN102759761B CN102759761B CN201210247941.6A CN201210247941A CN102759761B CN 102759761 B CN102759761 B CN 102759761B CN 201210247941 A CN201210247941 A CN 201210247941A CN 102759761 B CN102759761 B CN 102759761B
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Abstract
The invention discloses an optical thin film with high covering power and a high luminance and a display device comprising the optical thin film. The optical thin film comprises a transparent substrate, wherein two surfaces of the transparent substrate both are provided with diffusing coatings, the two diffusing coatings contain same ingredients, each diffusing coating comprises a diffusing glue layer embedded with diffusion particles, the diffusion particles comprise organic diffusion particles and inorganic diffusion particles, the organic diffusion particles consist of large organic diffusion particles and small organic diffusion particles, the range of particle sizes of the large organic diffusion particles is 10-50 microns, the range of particle sizes of the small organic diffusion particles is 1-10 microns, the range of particle sizes of the inorganic diffusion particles is 0.1-10 microns, and the thickness of the solidified diffusing coating is 1/5-4/5 of the particle size of the large organic diffusion particles. The optical thin film disclosed by the invention can be used for optimizing the utilization rate of a light source and strengthening the light condensation capability so as to not only have higher luminance and a balance atomizing effect, but also have excellent covering property.
Description
Technical field
The present invention relates to field of optical films, be specifically related to the optical thin film of the high briliancy of a kind of high covering and comprise the display device of this optical thin film.
Background technology
Display device is as an interfaces windows of man-machine interaction, seem more and more important, the use amount of the popular consumer goods such as notebook computer, mobile phone, televisor increases along with blowout formula is just occurring in scientific and technological progress, and the display device of a quality award from the ministry matter need to clearly Show Picture, also to accomplish that image is undistorted, in bright gay color, this just requires display device to be equipped with high-quality parts.Backlight module, as the key component of display device, seems particularly important.
Diffusion film, as the indispensable ingredient of backlight module, affects the final visual effect of display device.At present, on market application wider, the diffusion film that use amount is larger, as shown in Figure 1, normally apply diffusion layer 201 in the one side of transparency carrier 200, another side applies antiblocking layers 202, diffusion layer 201 contains diffusion particle 203, and antiblocking layers 202 contains the anti-stick particle 204 that connects.This diffusion film has good optical property, and briliancy is higher in use, but its covering is bad, can not cover the tiny flaw of light guide plate; And the diffusion film improving for covering is specially adjusted diffusion layer conventionally on the basis that does not change antiblocking layers, result makes its briliancy loss a lot.In addition,, in order to improve the method that hides performance and increase diffusion particle proportion on diffusion glue-line, can there is the defects such as bits.Therefore, develop on a kind of basis keeping physical property and both had good covering, also do not lose briliancy, at least not serious optical thin film product that affects briliancy, is the developing direction of this area.
Summary of the invention
In order to provide a kind of physical property that keeps unaffected, covering is good, and the optical thin film that briliancy is higher the invention provides the optical thin film of the high briliancy of a kind of high covering and comprises the display device of this optical thin film.Optical thin film provided by the invention can, in improving covering, reduce the loss of briliancy as far as possible, to reach the relative equilibrium of briliancy and covering, makes display device have more excellent display effect.
In order to achieve the above object, technical scheme provided by the invention is:
The invention provides the optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises transparency carrier, two surfaces of transparency carrier are provided with diffusion coating and two diffusion coatings are of identical composition, diffusion coating comprises the diffusion glue-line that is embedded with diffusion particle, diffusion particle comprises organic diffusion particle and inorganic diffusion particle, organic diffusion particle is made up of organic large diffusion particle and organic little diffusion particle, the particle size range of organic large diffusion particle is 10-50 μ m, the particle size range of organic little diffusion particle is 1-10 μ m, the particle size range of inorganic diffusion particle is 0.1-10 μ m, described organic large diffusion particle is 10-1.5:1 with the scope of the ratio of the particle diameter of organic little diffusion particle.
In order further to improve the covering power of above-mentioned optical thin film and to reduce the combination properties such as briliancy loss, the particle diameter ratio of organic large diffusion particle and organic little diffusion particle is 10-2:1,10-3:1,10-4:1,10-5:1, or 9-6:1.
Further, described diffusion particle is 1-15:10 with the weight ratio of diffusion glue-line, 1-12:10,1-10:10,5-8:10, or 9-12:10.
Further, the weight ratio of described organic diffusion particle and inorganic diffusion particle is 2-100:1,5-100:1,50-100:1,30-60:1,2-50:1, or 5-10:1.
Further, the weight ratio of described organic large diffusion particle and organic little diffusion particle is 0.5-50:1,1-20:1,8-20:1,10-20:1, or 30-40:1.
Further, the particle size range of above-mentioned organic large diffusion particle is 10-30 μ m, or 40-50 μ m.
Further, the particle size range of above-mentioned organic little diffusion particle is 3-5 μ m, or 6-10 μ m.
Further, the particle size range of above-mentioned inorganic diffusion particle is 0.1-0.5 μ m, 0.1-2 μ m, 1-5 μ m, or 6-10 μ m.
Further, the particle size range of described organic large diffusion particle is 15-50 μ m, and the particle size range of organic little diffusion particle is 2-10 μ m, and the particle size range of inorganic diffusion particle is 0.1-10 μ m.
Further, the particle size range of described organic large diffusion particle is 15-30 μ m, and the particle size range of organic little diffusion particle is 3-10 μ m, and the particle size range of inorganic diffusion particle is 0.1-5 μ m.
Further, the particle size range of described organic large diffusion particle is 20-50 μ m, the particle size range of described organic little diffusion particle is 2-10 μ m, and the particle size range of inorganic diffusion particle is 0.1-0.5 μ m, and the particle diameter ratio of organic little diffusion particle and inorganic diffusion particle is 20-100:1.
Further, the particle diameter ratio of described organic little diffusion particle and inorganic diffusion particle is 30-50:1,30-80:1, or 60-90:1.
Further, the particle size range of described organic large diffusion particle is 10-20 μ m, and the particle size range of described organic little diffusion particle is 2-5 μ m, and the particle size range of inorganic diffusion particle is 0.1-0.5 μ m.Described diffusion particle is 1:1 with the weight ratio of diffusion glue-line, and the weight ratio of described organic diffusion particle and inorganic diffusion particle is 9:1, and the weight ratio of described organic large diffusion particle and organic little diffusion particle is 8:1.
Further, the optically transparent material that described transparency carrier is 1.35-2.4 by refractive index is made, described optically transparent material is selected from glass, PMMA(polymethylmethacrylate), PET(polyethylene terephthalate), PETG(polyethylene terephthalate-1,4-CHDM ester), PC(polycarbonate), PA(polyamide), PS(polystyrene), PE(tygon), SAN(styrene-acrylonitrile copolymer) in one.
Further, the refractive index of described diffusion glue-line is 1.4-1.7, and this diffusion glue-line is selected from the potpourri of a kind of in epoxy resin, acryl resin, polyurethane, polyvinyl acetate (PVA) or Lauxite or at least two kinds.
Further, the refractive index of described diffusion particle is 1.4-2.4, organic diffusion particle is selected from the potpourri of a kind of in polymethylmethacrylate, poly-n-butyl methacrylate, polystyrene, silicone resin or at least two kinds, and inorganic diffusion particle is selected from the potpourri of a kind of in titania, calcium carbonate, barium sulphate, silicon dioxide or at least two kinds.
Further, the thickness after described diffusion curable adhesive layer is the 1/5-4/5 of the physical dimension of organic large diffusion particle.
The present invention also provides a kind of display device, and described display device comprises light source assembly, panel assembly and at least one optical thin film, and its feature is that described optical thin film is above-mentioned optical thin film provided by the invention.
Further, described light source assembly comprises reflector plate, light source and light guide plate, described reflector plate is the one in silver-plated metallic reflection sheet, silver-colored reflector plate or foaming PET reflector plate, described light source is the one in LED, cold-cathode fluorescence lamp, hot-cathode fluorescent lamp, light emitting diode or external electrode fluorescent lamp, this light source be arranged on a side of light guide plate or be arranged on light guide plate and reflector plate between.
Compared with prior art, the present invention has following advantage: (1) optical thin film provided by the invention is by the two-sided diffusion coating that arranges at transparency carrier, reducing under the prerequisite of briliancy loss, further promote the covering performance of this optical thin film, thereby can make to adopt the display device of this optical thin film can cover the tiny flaw of light guide plate, ensure the homogeneity of light source, finally make display device there is good display effect, (2) optical thin film provided by the invention, avoid prior art to improve covering performance by the proportion that increases organic diffusion particle or inorganic diffusion particle in single diffusion coating, and cause optical thin film to occur falling bits, briliancy is obviously descended the generation of degradation defect.Display device provided by the invention in the case of identical light source, stable performance, briliancy is higher, display effect is better.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of existing optical thin film;
Fig. 2 is the diagrammatic cross-section of optical thin film provided by the invention.
In Fig. 1,200 represent transparency carrier, and 201 represent diffusion glue-line, and 202 represent antiblocking layers, and 203 represent diffusion particle, and 204 represent the anti-stick particle that connects;
In Fig. 2,100 represent transparency carrier, and 101 represent diffusion glue-line, and 102 represent diffusion particle, comprise organic diffusion particle and inorganic diffusion particle.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described in detail:
As shown in Figure 2, the high briliancy optical thin film of high covering provided by the invention comprises transparency carrier 100, diffusion glue-line 101, diffusion particle 102.On two surfaces of transparency carrier 100, be provided with diffusion coating, diffusion coating comprises diffusion glue-line 101, in diffusion glue-line 101, be provided with diffusion particle 102, diffusion particle 102 comprises organic diffusion particle and inorganic diffusion particle, and organic diffusion particle comprises organic large diffusion particle and organic little diffusion particle.As can be seen from Figure, the height of organic large diffusion particle is higher than diffusion glue-line, and fill owing to having compared with the organic little diffusion particle of small particle diameter and inorganic diffusion particle the space forming between organic large diffusion particle, sized particles is formed to be spaced, thereby improved optic homogeneity and the covering of film, due to described diffusion glue-line, the refractive index of diffusion particle is more approaching again, the light transmission of this optical thin film is better, further makes this optical thin film have excellent combination property.
Before preparing optical thin film, first by proportioning, diffusion particle is dispersed in diffusion glue line material, can suitably add solvent and be mixed with coating fluid, the amount of adding solvent is beneficial to be coated with and is as the criterion.Adopt prior art to prepare transparency carrier, the transparency carrier preparing is unreeled, with coating machine, the coating fluid preparing is applied to two surfaces of transparency carrier, dry afterwards, rolling, obtains the high high briliancy optical thin film that hides of the present invention.
Embodiment 1
An optical thin film for the high briliancy of high covering, this optical thin film comprises PET transparency carrier, on two surfaces of transparency carrier, is provided with diffusion coating, and wherein spreading glue-line is polyurethane, and organic diffusion particle is PMMA, and inorganic diffusion particle is titania.The mean grain size of organic large diffusion particle is 10 μ m, and the mean grain size of organic little diffusion particle is 1 μ m, and the particle size range of inorganic diffusion particle is 0.1-0.3 μ m, and described large diffusion particle is 10:1 with the ratio of the particle diameter of little diffusion particle,
Described diffusion coating parts by weight are as follows:
Diffusion glue-line: 90 parts
Organic large diffusion particle: 2 parts
Organic little diffusion particle: 4 parts
Inorganic diffusion particle: 3 parts
Described diffusion particle is 1:10 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 2:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 0.5:1.
Embodiment 2
An optical thin film for the high briliancy of high covering, this optical thin film comprises PMMA transparency carrier, on two surfaces of transparency carrier, is provided with diffusion coating, and wherein spreading glue-line is polyurethane, and organic diffusion particle is PMMA, and inorganic diffusion particle is titania.The mean grain size 10 μ m of organic large diffusion particle, the mean grain size of organic little diffusion particle is 3 μ m, and the particle size range of inorganic diffusion particle is 0.2-0.3 μ m, and described large diffusion particle is 10:3 with the ratio of the particle diameter of little diffusion particle.
Described diffusion coating parts by weight are as follows:
Diffusion glue-line: 100 weight portions
Organic large diffusion particle: 80 parts
Organic little diffusion particle: 10 parts
Inorganic diffusion particle: 3 parts
Described diffusion particle is 93:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 30:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 8:1.
Embodiment 3
An optical thin film for the high briliancy of high covering, this optical thin film comprises PC transparency carrier, on two surfaces of transparency carrier, is provided with diffusion coating, and wherein spreading glue-line is acryl resin, and organic diffusion particle is PS, and inorganic diffusion particle is titania.The mean grain size of organic large diffusion particle is 20 μ m, and the mean grain size of organic little diffusion particle is 5 μ m, and the particle size range of inorganic diffusion particle is 0.2-0.3 μ m, and described large diffusion particle is 4:1 with the ratio of the particle diameter of little diffusion particle.
Described diffusion coating parts by weight are as follows:
Diffusion glue-line: 100 weight portions
Organic large diffusion particle: 30 parts
Organic little diffusion particle: 30 parts
Inorganic diffusion particle: 2.5 parts
Described diffusion particle is 62.5:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 24:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 1:1.
Embodiment 4
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PET transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is epoxy resin, organic diffusion particle is PMMA, and inorganic diffusion particle is silicon dioxide, and the mean grain size of organic large diffusion particle is 50 μ m, the mean grain size of organic little diffusion particle is 10 μ m, and the mean grain size of inorganic diffusion particle is 10 μ m; Described organic large diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 100 parts,
Organic little diffusion particle: 2 parts,
Inorganic diffusion particle: 1.02 parts;
Described diffusion particle is 103.02:100 with the weight ratio of diffusion glue-line, is about 1:1,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 100:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 50:1.
Embodiment 5
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PET transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is epoxy resin, organic diffusion particle is PMMA, and inorganic diffusion particle is silicon dioxide, and the mean grain size of organic large diffusion particle is 10 μ m, the mean grain size of organic little diffusion particle is 5 μ m, and the particle size range of inorganic diffusion particle is 0.3-0.5 μ m; Described organic large diffusion particle is 2:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 76 parts,
Organic little diffusion particle: 4 parts,
Inorganic diffusion particle: 2 parts;
Described diffusion particle is 82:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 40:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 19:1.
Embodiment 6
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PET transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is epoxy resin, organic diffusion particle is PMMA, and inorganic diffusion particle is silicon dioxide, and the mean grain size of organic large diffusion particle is 12 μ m, the mean grain size of organic little diffusion particle is 2 μ m, and the mean grain size of inorganic diffusion particle is 0.5-1 μ m; Described organic large diffusion particle is 6:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 100 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 11 parts;
Described diffusion particle is about 121:100 with the weight ratio of diffusion glue-line, is about 12:10,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 10:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 10:1.
Embodiment 7
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PET transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is epoxy resin, organic diffusion particle is PMMA, and inorganic diffusion particle is titania, and the mean grain size of organic large diffusion particle is 30 μ m, the mean grain size of organic little diffusion particle is 8 μ m, and the particle size range of inorganic diffusion particle is 0.3-0.5 μ m; Described organic large diffusion particle is 15:4 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 84 parts,
Organic little diffusion particle: 6 parts,
Inorganic diffusion particle: 18 parts;
Described diffusion particle is 108:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 5:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 14:1.
Embodiment 8
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PET transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is epoxy resin, organic diffusion particle is PMMA, and inorganic diffusion particle is silicon dioxide, and the mean grain size of organic large diffusion particle is 15 μ m, the mean grain size of organic little diffusion particle is 10 μ m, and the particle size range of inorganic diffusion particle is 2 μ m; Described organic large diffusion particle is 1.5:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 60 parts,
Organic little diffusion particle: 3 parts,
Inorganic diffusion particle: 7 parts;
Described diffusion particle is 7:10 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 9:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 20:1.
Embodiment 9
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PETG transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is polyurethane, organic diffusion particle is PC, and inorganic diffusion particle is calcium carbonate, and the mean grain size of organic large diffusion particle is 15 μ m, the mean grain size of organic little diffusion particle is 5 μ m, and the particle size range of inorganic diffusion particle is 0.3-0.5 μ m; Described organic large diffusion particle is 3:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 67 parts,
Organic little diffusion particle: 33 parts,
Inorganic diffusion particle: 2 parts.
Described diffusion particle is 102:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 50:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is about 2:1.
Embodiment 10
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PETG transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is polyurethane, organic diffusion particle is PC, and inorganic diffusion particle is calcium carbonate, and the mean grain size of organic large diffusion particle is 10 μ m, the mean grain size of organic little diffusion particle is 2 μ m, and the mean grain size of inorganic diffusion particle is 0.1-0.5 μ m; Described organic large diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 100 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts.
Described diffusion particle is 12:10 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 11:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 10:1.
Embodiment 11
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PETG transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is polyurethane, organic diffusion particle is PC, and inorganic diffusion particle is calcium carbonate, and the mean grain size of organic large diffusion particle is 50 μ m, the mean grain size of organic little diffusion particle is 10 μ m, and the mean grain size of inorganic diffusion particle is 5 μ m; Described organic large diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 90 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 8 parts.
Described diffusion particle is 108:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 25:2,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 9:1.
Embodiment 12
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises SAN transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is Lauxite, organic diffusion particle is silicone resin, and inorganic diffusion particle is barium sulphate, and the mean grain size of organic large diffusion particle is 20 μ m, the mean grain size of organic little diffusion particle is 6 μ m, and the mean grain size of inorganic diffusion particle is 2 μ m; Described organic large diffusion particle is 10:3 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 60 parts,
Organic little diffusion particle: 80 parts,
Inorganic diffusion particle: 5 parts;
Described diffusion particle is 145:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 28:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 0.75:1.
Embodiment 13
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises SAN transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is Lauxite, organic diffusion particle is silicone resin, and inorganic diffusion particle is barium sulphate, and the mean grain size of organic large diffusion particle is 30 μ m, the mean grain size of organic little diffusion particle is 8 μ m, and the mean grain size of inorganic diffusion particle is 3 μ m; Described organic large diffusion particle is 15:4 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 80 parts,
Organic little diffusion particle: 8 parts,
Inorganic diffusion particle: 11 parts;
Described diffusion particle is 99:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 8:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 10:1.
Embodiment 14
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises SAN transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is Lauxite, organic diffusion particle is silicone resin, and inorganic diffusion particle is barium sulphate, and the mean grain size of organic large diffusion particle is 20 μ m, the mean grain size of organic little diffusion particle is 2 μ m, and the mean grain size of inorganic diffusion particle is 0.1 μ m; Described organic large diffusion particle is 10:1 with the ratio of the particle diameter of organic little diffusion particle; Described organic little diffusion particle is 20:1 with the ratio of the particle diameter of inorganic diffusion particle.
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 80 parts,
Organic little diffusion particle: 5 parts,
Inorganic diffusion particle: 5 parts;
Described diffusion particle is 90:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 17:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 16:1.
Embodiment 15
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises SAN transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is Lauxite, organic diffusion particle is silicone resin, and inorganic diffusion particle is barium sulphate, and the mean grain size of organic large diffusion particle is 50 μ m, the mean grain size of organic little diffusion particle is 10 μ m, and the mean grain size of inorganic diffusion particle is 0.1 μ m; Described organic large diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle; Described organic little diffusion particle is 100:1 with the ratio of the particle diameter of inorganic diffusion particle.
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 60 parts,
Organic little diffusion particle: 80 parts,
Inorganic diffusion particle: 5 parts;
Described diffusion particle is 145:100 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 28:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 0.75:1.
Embodiment 16
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises SAN transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is Lauxite, organic diffusion particle is silicone resin, and inorganic diffusion particle is titania, and the mean grain size of organic large diffusion particle is 10 μ m, the mean grain size of organic little diffusion particle is 2 μ m, and the particle size range of inorganic diffusion particle is 0.1-0.3 μ m; Described organic large diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 80 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts;
Described diffusion particle is 1:1 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 9:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 8:1.
Embodiment 17
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises SAN transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is Lauxite, organic diffusion particle is silicone resin, and inorganic diffusion particle is barium sulphate, and the mean grain size of organic large diffusion particle is 20 μ m, the mean grain size of organic little diffusion particle is 5 μ m, and the particle size range of inorganic diffusion particle is 0.3-0.5 μ m; Described organic large diffusion particle is 4:1 with the ratio of the particle diameter of organic little diffusion particle;
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 80 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts;
Described diffusion particle is 1:1 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 9:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 8:1.
Embodiment 18
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises PC transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is epoxy resin, organic diffusion particle is PS resin, and inorganic diffusion particle is silicon dioxide, and the mean grain size of organic large diffusion particle is 20 μ m, the mean grain size of organic little diffusion particle is 5 μ m, and the mean grain size of inorganic diffusion particle is 0.1 μ m; Described organic large diffusion particle is 4:1 with the ratio of the particle diameter of organic little diffusion particle; Described organic little diffusion particle is 50:1 with the ratio of the particle diameter of inorganic diffusion particle.
Described diffusion coating contains (described umber is parts by weight):
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 80 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts;
Described diffusion particle is 1:1 with the weight ratio of diffusion glue-line,
The weight ratio of described organic diffusion particle and inorganic diffusion particle is 9:1,
The weight ratio of described organic large diffusion particle and organic little diffusion particle is 8:1.
The optical thin film that table 1 embodiment of the present invention 1-18 provides and existing ordinary optical film, the existing high the performance test results that hides optical thin film
Comparative example 1
Transparency carrier is PET, and diffusion glue-line is polyurethane, and its parts by weight are 100 weight portions; Organic diffusion particle is PMMA, and its mean grain size is 5 μ m, and parts by weight are 50 parts; Inorganic diffusion particle is titania, and its particle size range is 0.1-0.3 μ m, and parts by weight are 50 parts.Dispersed with stirring, one side coating after suitably adding solvent and being uniformly dispersed.
In this example, organic filler particle diameter is single, and the weight ratio of organic diffusion particle and inorganic diffusion particle is 1:1, the covering better performances of this film, but transmittance is low, and briliancy is poor.
Comparative example 2
Transparency carrier is PET, and diffusion glue-line is polyurethane, and its parts by weight are 100 weight portions; Organic diffusion particle is PMMA, and wherein the mean grain size of organic large diffusion particle is 15 μ m, and parts by weight are 70 parts, and organic little diffusion particle mean grain size is 5 μ m, and parts by weight are 35 parts.Dispersed with stirring, one side coating after suitably adding solvent and being uniformly dispersed.
In this example, only have organic large diffusion particle and organic little diffusion particle, there is no inorganic diffusion particle, the transmittance of this film is high, and briliancy is better, but hides poor-performing.
Comparative example 3
Transparency carrier is PET, and diffusion glue-line is polyurethane, and its parts by weight are 100 weight portions; Organic diffusion particle is PMMA, and wherein the mean grain size of organic large diffusion particle is 10 μ m, and parts by weight are 120 parts, and organic little diffusion particle mean grain size is 5 μ m, and parts by weight are 120 parts.Inorganic diffusion particle mean grain size is 12 μ m, and parts by weight are 10 parts, dispersed with stirring, double spread after suitably adding solvent and being uniformly dispersed.
In this example, diffusion particle is excessive with the weight ratio of diffusion glue-line, and the particle diameter of inorganic diffusion particle is excessive, the covering better performances of this film, but briliancy is poor, and diffusion particle easily comes off.
Comparative example 4
Transparency carrier is PET, and diffusion glue-line is polyurethane, and its parts by weight are 100 weight portions; Organic diffusion particle is PMMA, and wherein the mean grain size of organic large diffusion particle is 60 μ m, and parts by weight are 70 parts; The mean grain size of organic little diffusion particle is 5 μ m, and parts by weight are 35 parts; The mean grain size of inorganic diffusion particle is 0.5 μ m, and parts by weight are 3.5 parts.Dispersed with stirring, double spread after suitably adding solvent and being uniformly dispersed.
In this example, the particle diameter of organic large diffusion particle is excessive, and briliancy and covering performance are all poor.
The performance test results of the optical thin film of table 2 comparative example 1 to 4 preparation
| Kind | Briliancy | Transmittance | Mist degree |
| Comparative example 1 | 974 | 48.78 | 94.67 |
| Comparative example 2 | 1859 | 85.62 | 90.55 |
| Comparative example 3 | 937 | 70.57 | 94.68 |
| Comparative example 4 | 1088 | 80.53 | 89.70 |
Comparative example 3: detect the adhesion of this Optical Coatings Surface diffusion particle by hundred lattice tests, bits appear falling in sample segment, and impact is used.
The performance test results by table 1 and table 2 can draw, under the prerequisite that optical thin film provided by the invention loses in minimizing briliancy, has further promoted the covering performance of this optical thin film.Wherein, especially there is good covering performance and briliancy with embodiment 2,5 to 8,10,11,13,14,16,17 and 18 optical thin films that provide, and the optical thin film that embodiment 16,17 and 18 provides have better covering performance and briliancy.Thereby display unit provided by the invention has good display effect.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.Every equalization that content is done according to the present invention changes and modifies, and is all encompassed in the scope of the claims of the present invention.
Claims (4)
1. the optical thin film of the high briliancy of high covering, this optical thin film comprises transparency carrier, two surfaces of transparency carrier are provided with diffusion coating and two diffusion coatings are of identical composition, diffusion coating comprises the diffusion glue-line that is embedded with diffusion particle, diffusion particle comprises organic diffusion particle and inorganic diffusion particle, and organic diffusion particle is made up of organic large diffusion particle and organic little diffusion particle;
This optical thin film comprises PC transparency carrier, on two surfaces of transparency carrier, be provided with diffusion coating, wherein spreading glue-line is epoxy resin, organic diffusion particle is PS resin, inorganic diffusion particle is silicon dioxide, the mean grain size of organic large diffusion particle is 20 μ m, and the mean grain size of organic little diffusion particle is 5 μ m, and the mean grain size of inorganic diffusion particle is 0.1 μ m;
Described diffusion coating contains:
Diffusion glue-line: 100 parts,
Organic large diffusion particle: 80 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts;
Described umber is parts by weight.
2. the high optical thin film that hides high briliancy according to claim 1, is characterized in that, the thickness after described diffusion curable adhesive layer is the 1/5-4/5 of the physical dimension of organic large diffusion particle.
3. a display device, described display device comprises light source assembly, panel assembly and at least one optical thin film, it is characterized in that, described optical thin film is the optical thin film described in claim 1 or 2.
4. display device according to claim 3, it is characterized in that, described light source assembly comprises reflector plate, light source and light guide plate, described reflector plate is the one in silver-plated metallic reflection sheet, silver-colored reflector plate or foaming PET reflector plate, described light source is the one in LED, cold-cathode fluorescence lamp, hot-cathode fluorescent lamp or external electrode fluorescent lamp, this light source be arranged on a side of light guide plate or be arranged on light guide plate and reflector plate between.
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| CN104503010B (en) * | 2014-12-23 | 2016-09-21 | 浙江大学宁波理工学院 | A kind of scratch resistance type optical diffusion and preparation method thereof |
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| CN107340553B (en) * | 2017-08-10 | 2020-02-28 | 宁波激智科技股份有限公司 | High-covering-capacity and high-brightness atomization film and preparation method thereof |
| CN108387957A (en) * | 2018-02-27 | 2018-08-10 | 宁波激智科技股份有限公司 | A kind of high quantum dot diffusion barrier and its preparation method and application for covering high briliancy |
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