CN102759761A - 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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- CN102759761A CN102759761A CN2012102479416A CN201210247941A CN102759761A CN 102759761 A CN102759761 A CN 102759761A CN 2012102479416 A CN2012102479416 A CN 2012102479416A CN 201210247941 A CN201210247941 A CN 201210247941A CN 102759761 A CN102759761 A CN 102759761A
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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; It is more and more important to have seemed; The use amount of popular consumer goods such as notebook computer, mobile phone, televisor is along with the growth of blowout formula is just taking place in the progress of science and technology, and the display device of a quality award from the ministry matter need clearly Show Picture, and will accomplish that also image is undistorted; In bright gay color, this just requires display device to be equipped with the high-quality parts.Module backlight seems particularly important as the key component of display device.
Diffusion film affects the final visual effect of display device as the indispensable ingredient of module backlight.At present, use on the market wider, the diffusion film that use amount is bigger; As shown in Figure 1, normally the one side at transparency carrier 200 applies diffusion layer 201, and another side applies antiblocking layers 202; Diffusion layer 201 contains diffusion particle 203, and antiblocking layers 202 contains antiblock particle 204.This diffusion film has the good optical performance, and briliancy is higher in use, but its covering property is bad, can not cover the tiny flaw of LGP; And the special diffusion film that improves to covering property is adjusted diffusion layer on the basis that does not change antiblocking layers usually, and the result makes its briliancy loss a lot.In addition, in order to improve the method that hides performance and on the diffusion glue-line, increase diffusion particle proportion, can there be to fall defectives such as bits.Therefore, develop and a kind ofly also do not lose briliancy keeping both having had good covering property on the basis of physical property, the not serious at least optical thin film product that influences briliancy is the developing direction of this area.
Summary of the invention
In order to provide a kind of maintenance physical property unaffected, covering property is good, the optical thin film that briliancy is higher, and the present invention provides the optical thin film and the display device that comprises this optical thin film of the high briliancy of a kind of high covering.Optical thin film provided by the invention can reduce the loss of briliancy as far as possible when improving covering property, to reach the relative equilibrium of briliancy and covering property, make display device have more excellent display effect.
In order to achieve the above object, technical scheme provided by the invention is:
The present 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, and diffusion coating comprises the diffusion glue-line that is embedded with diffusion particle, and diffusion particle comprises organic diffusion particle and inorganic diffusion particle; Organic diffusion particle is made up of organic big diffusion particle and organic little diffusion particle; The particle size range of organic big diffusion particle is 10-50um, and the particle size range of organic little diffusion particle is 1-10um, and the particle size range of inorganic diffusion particle is 0.1-10um; Said organic big diffusion particle is 10-1.5:1 with the scope of the ratio of the particle diameter of organic little diffusion particle.
For the covering power that further improves above-mentioned optical thin film with reduce combination property such as briliancy loss, the particle diameter ratio of organic big 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, said 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 said 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 said organic big 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 big diffusion particle is 10-30um, or 40-50um.
Further, the particle size range of above-mentioned organic little diffusion particle is 3-5um, or 6-10um.
Further, the particle size range of above-mentioned inorganic diffusion particle is 0.1-0.5um, 0.1-2um, 1-5um, or 6-10um.
Further, the particle size range of said organic big diffusion particle is 15-50um, and the particle size range of organic little diffusion particle is 2-10um, and the particle size range of inorganic diffusion particle is 0.1-10um.
Further, the particle size range of said organic big diffusion particle is 15-30um, and the particle size range of organic little diffusion particle is 3-10um, and the particle size range of inorganic diffusion particle is 0.1-5um.
Further; The particle size range of said organic big diffusion particle is 20-50um; The particle size range of said organic little diffusion particle is 2-10um, and the particle size range of inorganic diffusion particle is 0.1-0.5um, and the particle diameter ratio of organic little diffusion particle and inorganic diffusion particle is 20-100:1.
Further, the particle diameter ratio of said 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 said organic big diffusion particle is 10-20um, and the particle size range of said organic little diffusion particle is 2-5um, and the particle size range of inorganic diffusion particle is 0.1-0.5um.Said diffusion particle is 1:1 with the weight ratio of diffusion glue-line, and the weight ratio of said organic diffusion particle and inorganic diffusion particle is 9:1, and the weight ratio of said organic big diffusion particle and organic little diffusion particle is 8:1.
Further; Described transparency carrier is that the optically transparent material of 1.35-2.4 is processed by refractive index; Described optically transparent material is selected from a kind of among glass, PMMA (polymethylmethacrylate), PET (polyethylene terephthalate), PETG (polyethylene terephthalate-1,4 cyclohexane dimethanol ester), PC (polycarbonate), PA (polyamide), PS (polystyrene), PE (tygon), the SAN (styrene-acrylonitrile copolymer).
Further, the refractive index of said 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 the 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, the silicone resin or at least two kinds, and inorganic diffusion particle is selected from the potpourri of a kind of in titania, lime carbonate, barium sulphate, the silicon dioxide or at least two kinds.
Further, the thickness behind the said diffusion curable adhesive layer is the 1/5-4/5 of the physical dimension of organic big diffusion particle.
The present invention also provides a kind of display device, and said display device comprises light source assembly, panel assembly and at least one optical thin film, and its feature is that said optical thin film is an above-mentioned optical thin film provided by the invention.
Further; Said light source assembly comprises reflector plate, light source and LGP; Described reflector plate is a kind of in silver-plated metallic reflection sheet, silver-colored reflector plate or the foaming PET reflector plate; Described light source is a kind of in LED, cold-cathode fluorescence lamp, hot-cathode fluorescent lamp, light emitting diode or the external electrode fluorescent lamp, this light source be arranged on a side of LGP or be arranged on LGP and reflector plate between.
Compared with prior art; The present invention has following advantage: (1) optical thin film provided by the invention is through the two-sided diffusion coating that is provided with at transparency carrier; Under the prerequisite that reduces the briliancy loss, further promote the covering performance of this optical thin film, thereby can make the display device that adopts this optical thin film can cover the tiny flaw of LGP; Guarantee the homogeneity of light source; Finally make display device have good display effect, (2) optical thin film provided by the invention has avoided prior art to improve the covering performance through the proportion that in single diffusion coating, increases organic diffusion particle or inorganic diffusion particle; And causing optical thin film bits to occur falling, briliancy is obviously descended the degradation generation of defects.Display device provided by the invention under the situation of identical light source, stable performance, briliancy is higher, display effect is better.
Description of 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.
Among Fig. 1,200 expression transparency carriers, 201 expression diffusion glue-lines, 202 expression antiblocking layers, 203 expression diffusion particles, 204 expression antiblock particles;
Among Fig. 2,100 expression transparency carriers, 101 expression diffusion glue-lines, 102 expression diffusion particles comprise organic diffusion particle and inorganic diffusion particle.
Embodiment
To combine accompanying drawing that the present invention is further described in detail below:
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.Be provided with diffusion coating on two surfaces of transparency carrier 100; Diffusion coating comprises diffusion glue-line 101; Be provided with diffusion particle 102 in the diffusion glue-line 101; Diffusion particle 102 comprises organic diffusion particle and inorganic diffusion particle, and organic diffusion particle comprises organic big diffusion particle and organic little diffusion particle.In scheming, can find out that the height of organic big diffusion particle is higher than the diffusion glue-line, and fill the space that forms between organic big diffusion particle owing to having than the organic little diffusion particle and the inorganic diffusion particle of small particle diameter; Sized particles is formed to be spaced; Thereby improved the optic homogeneity and covering property of film, owing to said 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 the excellent comprehensive performance.
Before the preparation optical thin film, by proportioning diffusion particle is dispersed in the diffusion glue-line material earlier, 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 the prior art for preparing transparency carrier, the transparency carrier for preparing is unreeled, with coating machine the coating fluid for preparing is applied to two surfaces of transparency carrier, dry afterwards, rolling promptly get the high briliancy optical thin film of high covering of the present invention.
Embodiment 1
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises the PET transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating, and wherein spreading glue-line is polyurethane, and organic diffusion particle is PMMA, inorganic diffusion particle is a titania.The mean grain size of organic big diffusion particle is 10um, and the mean grain size of organic little diffusion particle is 1um, and the particle size range of inorganic diffusion particle is 0.1-0.3um, and said big diffusion particle is 10:1 with the ratio of the particle diameter of little diffusion particle,
Described diffusion coating parts by weight are following:
Diffusion glue-line: 90 parts
Organic big diffusion particle: 2 parts
Organic little diffusion particle: 4 parts
Inorganic diffusion particle: 3 parts
Said diffusion particle is 1: 10 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 2:1,
The weight ratio of said organic big diffusion particle and organic little diffusion particle is 0.5:1.
Embodiment 2
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises the PMMA transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating, and wherein spreading glue-line is polyurethane, and organic diffusion particle is PMMA, inorganic diffusion particle is a titania.The mean grain size 10um of organic big diffusion particle, the mean grain size of organic little diffusion particle is 3um, and the particle size range of inorganic diffusion particle is 0.2-0.3um, and described big diffusion particle is 10:3 with the ratio of the particle diameter of little diffusion particle.
Described diffusion coating parts by weight are following:
Diffusion glue-line: 100 weight portions
Organic big diffusion particle: 80 parts
Organic little diffusion particle: 10 parts
Inorganic diffusion particle: 3 parts
Said diffusion particle is 93:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 30:1,
The weight ratio of said organic big diffusion particle and organic little diffusion particle is 8:1.
Embodiment 3
The optical thin film of the high briliancy of a kind of high covering, this optical thin film comprises the PC transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating, and wherein spreading glue-line is acryl resin, and organic diffusion particle is PS, inorganic diffusion particle is a titania.The mean grain size of organic big diffusion particle is 20um, and the mean grain size of organic little diffusion particle is 5um, and the particle size range of inorganic diffusion particle is 0.2-0.3um, and described big diffusion particle is 4:1 with the ratio of the particle diameter of little diffusion particle.
Described diffusion coating parts by weight are following:
Diffusion glue-line: 100 weight portions
Organic big diffusion particle: 30 parts
Organic little diffusion particle: 30 parts
Inorganic diffusion particle: 2.5 parts
Said diffusion particle is 62.5:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 24:1,
The weight ratio of said organic big 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 the PET transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is epoxy resin; Organic diffusion particle is PMMA, and inorganic diffusion particle is a silicon dioxide, and the mean grain size of organic big diffusion particle is 50um; The mean grain size of organic little diffusion particle is 10um, and the mean grain size of inorganic diffusion particle is 10um; Said organic big diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 100 parts,
Organic little diffusion particle: 2 parts,
Inorganic diffusion particle: 1.02 parts;
Said diffusion particle is 103.02:100 with the weight ratio of diffusion glue-line, is about 1: 1,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 100:1,
The weight ratio of said organic big 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 the PET transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is epoxy resin; Organic diffusion particle is PMMA, and inorganic diffusion particle is a silicon dioxide, and the mean grain size of organic big diffusion particle is 10um; The mean grain size of organic little diffusion particle is 5um, and the particle size range of inorganic diffusion particle is 0.3-0.5um; Said organic big diffusion particle is 2:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 76 parts,
Organic little diffusion particle: 4 parts,
Inorganic diffusion particle: 2 parts;
Said diffusion particle is 82:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 40:1,
The weight ratio of said organic big 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 the PET transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is epoxy resin; Organic diffusion particle is PMMA, and inorganic diffusion particle is a silicon dioxide, and the mean grain size of organic big diffusion particle is 12um; The mean grain size of organic little diffusion particle is 2um, and the mean grain size of inorganic diffusion particle is 0.5-1um; Said organic big diffusion particle is 6:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 100 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 11 parts;
Said diffusion particle is about 121: 100 with the weight ratio of diffusion glue-line, is about 12:10,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 10:1,
The weight ratio of said organic big 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 the PET transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is epoxy resin; Organic diffusion particle is PMMA, and inorganic diffusion particle is a titania, and the mean grain size of organic big diffusion particle is 30um; The mean grain size of organic little diffusion particle is 8um, and the particle size range of inorganic diffusion particle is 0.3-0.5um; Said organic big diffusion particle is 15:4 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 84 parts,
Organic little diffusion particle: 6 parts,
Inorganic diffusion particle: 18 parts;
Said diffusion particle is 108:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 5:1,
The weight ratio of said organic big 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 the PET transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is epoxy resin; Organic diffusion particle is PMMA, and inorganic diffusion particle is a silicon dioxide, and the mean grain size of organic big diffusion particle is 15um; The mean grain size of organic little diffusion particle is 10um, and the particle size range of inorganic diffusion particle is 2um; Said organic big diffusion particle is 1.5:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 60 parts,
Organic little diffusion particle: 3 parts,
Inorganic diffusion particle: 7 parts;
Said diffusion particle is 7:10 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 9:1,
The weight ratio of said organic big 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 the PETG transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is polyurethane; Organic diffusion particle is PC, and inorganic diffusion particle is a lime carbonate, and the mean grain size of organic big diffusion particle is 15um; The mean grain size of organic little diffusion particle is 5um, and the particle size range of inorganic diffusion particle is 0.3-0.5um; Said organic big diffusion particle is 3:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 67 parts,
Organic little diffusion particle: 33 parts,
Inorganic diffusion particle: 2 parts.
Said diffusion particle is 102:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 50:1,
The weight ratio of said organic big 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 the PETG transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is polyurethane; Organic diffusion particle is PC, and inorganic diffusion particle is a lime carbonate, and the mean grain size of organic big diffusion particle is 10um; The mean grain size of organic little diffusion particle is 2um, and the mean grain size of inorganic diffusion particle is 0.1-0.5um; Said organic big diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 100 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts.
Said diffusion particle is 12:10 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 11:1,
The weight ratio of said organic big 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 the PETG transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is polyurethane; Organic diffusion particle is PC, and inorganic diffusion particle is a lime carbonate, and the mean grain size of organic big diffusion particle is 50um; The mean grain size of organic little diffusion particle is 10um, and the mean grain size of inorganic diffusion particle is 5um; Said organic big diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 90 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 8 parts.
Said diffusion particle is 108:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 25:2,
The weight ratio of said organic big 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 the SAN transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is Lauxite; Organic diffusion particle is a silicone resin, and inorganic diffusion particle is a barium sulphate, and the mean grain size of organic big diffusion particle is 20um; The mean grain size of organic little diffusion particle is 6um, and the mean grain size of inorganic diffusion particle is 2um; Said organic big diffusion particle is 10:3 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 60 parts,
Organic little diffusion particle: 80 parts,
Inorganic diffusion particle: 5 parts;
Said diffusion particle is 145:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 28:1,
The weight ratio of said organic big 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 the SAN transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is Lauxite; Organic diffusion particle is a silicone resin, and inorganic diffusion particle is a barium sulphate, and the mean grain size of organic big diffusion particle is 30um; The mean grain size of organic little diffusion particle is 8um, and the mean grain size of inorganic diffusion particle is 3um; Said organic big diffusion particle is 15:4 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 80 parts,
Organic little diffusion particle: 8 parts,
Inorganic diffusion particle: 11 parts;
Said diffusion particle is 99:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 8:1,
The weight ratio of said organic big 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 the SAN transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is Lauxite; Organic diffusion particle is a silicone resin, and inorganic diffusion particle is a barium sulphate, and the mean grain size of organic big diffusion particle is 20um; The mean grain size of organic little diffusion particle is 2um, and the mean grain size of inorganic diffusion particle is 0.1um; Said organic big diffusion particle is 10:1 with the ratio of the particle diameter of organic little diffusion particle; Said organic little diffusion particle is 20:1 with the ratio of the particle diameter of inorganic diffusion particle.
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 80 parts,
Organic little diffusion particle: 5 parts,
Inorganic diffusion particle: 5 parts;
Said diffusion particle is 90:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 17:1,
The weight ratio of said organic big 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 the SAN transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is Lauxite; Organic diffusion particle is a silicone resin, and inorganic diffusion particle is a barium sulphate, and the mean grain size of organic big diffusion particle is 50um; The mean grain size of organic little diffusion particle is 10um, and the mean grain size of inorganic diffusion particle is 0.1um; Said organic big diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle; Said organic little diffusion particle is 100:1 with the ratio of the particle diameter of inorganic diffusion particle.
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 60 parts,
Organic little diffusion particle: 80 parts,
Inorganic diffusion particle: 5 parts;
Said diffusion particle is 145:100 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 28:1,
The weight ratio of said organic big 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 the SAN transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is Lauxite; Organic diffusion particle is a silicone resin, and inorganic diffusion particle is a titania, and the mean grain size of organic big diffusion particle is 10um; The mean grain size of organic little diffusion particle is 2um, and the particle size range of inorganic diffusion particle is 0.1-0.3um; Said organic big diffusion particle is 5:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 80 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts;
Said diffusion particle is 1: 1 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is about 9:1,
The weight ratio of said organic big 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 the SAN transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is Lauxite; Organic diffusion particle is a silicone resin, and inorganic diffusion particle is a barium sulphate, and the mean grain size of organic big diffusion particle is 20um; The mean grain size of organic little diffusion particle is 5um, and the particle size range of inorganic diffusion particle is 0.3-0.5um; Said organic big diffusion particle is 4:1 with the ratio of the particle diameter of organic little diffusion particle;
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 80 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts;
Said diffusion particle is 1: 1 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is about 9:1,
The weight ratio of said organic big 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 the PC transparency carrier, and two surfaces of transparency carrier are provided with diffusion coating; Wherein spreading glue-line is epoxy resin; Organic diffusion particle is the PS resin, and inorganic diffusion particle is a silicon dioxide, and the mean grain size of organic big diffusion particle is 20um; The mean grain size of organic little diffusion particle is 5um, and the mean grain size of inorganic diffusion particle is 0.1um; Said organic big diffusion particle is 4:1 with the ratio of the particle diameter of organic little diffusion particle; Said organic little diffusion particle is 50:1 with the ratio of the particle diameter of inorganic diffusion particle.
Said diffusion coating contains (said umber is parts by weight):
The diffusion glue-line: 100 parts,
Organic big diffusion particle: 80 parts,
Organic little diffusion particle: 10 parts,
Inorganic diffusion particle: 10 parts;
Said diffusion particle is 1: 1 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 9:1,
The weight ratio of said organic big diffusion particle and organic little diffusion particle is 8:1.
Optical thin film that table 1 embodiment of the invention 1-18 provides and existing ordinary optical film, the existing high The performance test results that hides optical thin film
Comparative Examples 1
Transparency carrier is PET, and the diffusion glue-line is a polyurethane, and its parts by weight are 100 weight portions; Organic diffusion particle is PMMA, and its mean grain size is 5um, and parts by weight are 50 parts; Inorganic diffusion particle is a titania, and its particle size range is 0.1-0.3um, and parts by weight are 50 parts.Dispersed with stirring is suitably added the solvent back single face coating that is uniformly dispersed.
In this example, the 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 relatively poor.
Comparative Examples 2
Transparency carrier is PET, and the diffusion glue-line is a polyurethane, and its parts by weight are 100 weight portions; Organic diffusion particle is PMMA, and wherein the mean grain size of organic big diffusion particle is 15um, and parts by weight are 70 parts, and organic little diffusion particle mean grain size is 5um, and parts by weight are 35 parts.Dispersed with stirring is suitably added the solvent back single face coating that is uniformly dispersed.
In this example, have only organic big diffusion particle and organic little diffusion particle, do not have inorganic diffusion particle, the transmittance of this film is high, and briliancy is better, but hides poor-performing.
Comparative Examples 3
Transparency carrier is PET, and the diffusion glue-line is a polyurethane, and its parts by weight are 100 weight portions; Organic diffusion particle is PMMA, and wherein the mean grain size of organic big diffusion particle is 10um, and parts by weight are 120 parts, and organic little diffusion particle mean grain size is 5um, and parts by weight are 120 parts.Inorganic diffusion particle mean grain size is 12um, and parts by weight are 10 parts, dispersed with stirring, suitably add solvent be uniformly dispersed the back double spread.
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 relatively poor, and diffusion particle is prone to come off.
Comparative Examples 4
Transparency carrier is PET, and the diffusion glue-line is a polyurethane, and its parts by weight are 100 weight portions; Organic diffusion particle is PMMA, and wherein the mean grain size of organic big diffusion particle is 60um, and parts by weight are 70 parts; The mean grain size of organic little diffusion particle is 5um, and parts by weight are 35 parts; The mean grain size of inorganic diffusion particle is 0.5um, and parts by weight are 3.5 parts.Dispersed with stirring, suitably add solvent be uniformly dispersed the back double spread.
In this example, the particle diameter of organic big diffusion particle is excessive, and briliancy is all relatively poor with the covering performance.
The The performance test results of the optical thin film of table 2 Comparative Examples 1 to 4 preparation
| Kind | Briliancy | Transmittance | Mist degree |
| Comparative Examples 1 | 974 | 48.78 | 94.67 |
| Comparative Examples 2 | 1859 | 85.62 | 90.55 |
| Comparative Examples 3 | 937 | 70.57 | 94.68 |
| Comparative Examples 4 | 1088 | 80.53 | 89.70 |
Comparative Examples 3: through the adhesion of this optical thin film surface diffusion particle of hundred lattice test detection, bits appear falling in sample segment, and influence is used.
The performance test results through table 1 and table 2 can draw, and optical thin film provided by the invention has further promoted the covering performance of this optical thin film under the prerequisite that reduces the briliancy loss.Wherein, the optical thin film that especially provides with embodiment 2,5 to 8,10,11,13,14,16,17 and 18 has and hides performance and briliancy preferably, and the optical thin film that embodiment 16,17 and 18 provides has better covering performance and briliancy.Thereby display unit provided by the invention has good display.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.Every equalization that content is done according to the present invention changes and modifies, and all is encompassed in the claim of the present invention.
Claims (10)
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, and diffusion coating comprises the diffusion glue-line that is embedded with diffusion particle, and diffusion particle comprises organic diffusion particle and inorganic diffusion particle; Organic diffusion particle is made up of organic big diffusion particle and organic little diffusion particle; The particle size range of organic big diffusion particle is 10-50um, and the particle size range of organic little diffusion particle is 1-10um, and the particle size range of inorganic diffusion particle is 0.1-10um; Said organic big diffusion particle is 10-1.5:1 with the scope of the ratio of the particle diameter of organic little diffusion particle;
Said diffusion particle is 1-15:10 with the weight ratio of diffusion glue-line,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 2-100:1,
The weight ratio of said organic big diffusion particle and organic little diffusion particle is 0.5-50:1.
2. the high optical thin film that hides high briliancy according to claim 1 is characterized in that,
The weight ratio of said organic diffusion particle and inorganic diffusion particle is 2-50:1,
The weight ratio of said organic big diffusion particle and organic little diffusion particle is 8-20:1.
3. the high optical thin film that hides high briliancy according to claim 1 is characterized in that the particle size range of said organic big diffusion particle is 40-50um, and the particle size range of organic little diffusion particle is 6-10um, and the particle size range of inorganic diffusion particle is 1-5um.
4. the high optical thin film that hides high briliancy according to claim 1 is characterized in that the particle size range of said organic big diffusion particle is 10-30um, and the particle size range of organic little diffusion particle is 3-5um, and the particle size range of inorganic diffusion particle is 0.1-2um.
5. the high optical thin film that hides high briliancy according to claim 1; It is characterized in that; Described transparency carrier is that the optically transparent material of 1.35-2.4 is processed by refractive index, and described optically transparent material is selected from a kind of among glass, PMMA, PET, PETG, PC, PA, PS, PE, the SAN.
6. the high optical thin film that hides high briliancy according to claim 1; It is characterized in that; The refractive index of said 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 the Lauxite or at least two kinds.
7. the high optical thin film that hides high briliancy according to claim 1; It is characterized in that; 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, the silicone resin or at least two kinds, and inorganic diffusion particle is selected from the potpourri of a kind of in titania, lime carbonate, barium sulphate, the silicon dioxide or at least two kinds.
8. the high optical thin film that hides high briliancy according to claim 1 is characterized in that the thickness behind the said diffusion curable adhesive layer is the 1/5-4/5 of the physical dimension of organic big diffusion particle.
9. display device, said display device comprises light source assembly, panel assembly and at least one optical thin film, it is characterized in that, said optical thin film is the described optical thin film of one of claim 1-8.
10. display device according to claim 9; It is characterized in that; Said light source assembly comprises reflector plate, light source and LGP; Described reflector plate is a kind of in silver-plated metallic reflection sheet, silver-colored reflector plate or the foaming PET reflector plate, and described light source is a kind of in LED, cold-cathode fluorescence lamp, hot-cathode fluorescent lamp, light emitting diode or the external electrode fluorescent lamp, this light source be arranged on a side of LGP or be arranged on LGP and reflector plate between.
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