CN112965151A - Optical diffusion film, preparation method thereof and backlight module - Google Patents
Optical diffusion film, preparation method thereof and backlight module Download PDFInfo
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- CN112965151A CN112965151A CN202110173751.3A CN202110173751A CN112965151A CN 112965151 A CN112965151 A CN 112965151A CN 202110173751 A CN202110173751 A CN 202110173751A CN 112965151 A CN112965151 A CN 112965151A
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 187
- 230000003287 optical effect Effects 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 139
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims description 34
- 238000000576 coating method Methods 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 22
- 239000002994 raw material Substances 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 239000003085 diluting agent Substances 0.000 claims description 11
- 239000003431 cross linking reagent Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 9
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 8
- 238000003483 aging Methods 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000002834 transmittance Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 79
- 238000000889 atomisation Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- -1 drying process Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical group O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses an optical diffusion film, a preparation method thereof and a backlight module, wherein the optical diffusion film sequentially comprises the following components from top to bottom: the substrate comprises a first diffusion layer, a substrate layer and a second diffusion layer; diffusion-assisting particles and diffusion particles are arranged in the second diffusion layer and the first diffusion layer, the content of the diffusion-assisting particles and the diffusion particles in the second diffusion layer is larger than that of the diffusion-assisting particles and the diffusion particles in the first diffusion layer, and the particle size of the diffusion-assisting particles and the particle size of the diffusion particles in the second diffusion layer are smaller than that of the diffusion-assisting particles and the diffusion particles in the first diffusion layer; the optical diffusion film has high light transmittance and good diffusion effect, can increase the irradiation area of light, reduce the thickness of the backlight module, and ensure that the backlight module emits light uniformly.
Description
Technical Field
The invention relates to the technical field of optics, in particular to an optical diffusion film, a preparation method thereof and a backlight module.
Background
Liquid crystal display devices have been rapidly expanded in application fields as display units of IT-related devices such as computers, televisions, automobiles, and communication devices. The liquid crystal panel does not emit light, so a backlight module is required to be added, and a general backlight film group comprises a light source, a light guide plate, a light diffusion film and a brightness enhancement film, wherein the diffusion film is positioned above the light guide plate and can convert a point or line light source penetrating through the light guide plate into a uniform surface light source to ensure that the light distribution is more uniform so as to achieve the atomization effect.
Disclosure of Invention
In view of this, the present application provides an optical diffusion film, a method for manufacturing the same, and a backlight module.
For solving above technical problem, the technical scheme that this application provided is an optical diffusion barrier, includes from top to bottom in proper order: the substrate comprises a first diffusion layer, a substrate layer and a second diffusion layer; and the second diffusion layer and the first diffusion layer are internally provided with diffusion-assisting particles and diffusion particles, the content of the diffusion-assisting particles and the diffusion particles in the second diffusion layer is greater than that of the diffusion-assisting particles and the diffusion particles in the first diffusion layer, and the particle diameters of the diffusion-assisting particles and the diffusion particles in the second diffusion layer are smaller than those of the diffusion-assisting particles and the diffusion particles in the first diffusion layer.
Preferably, the diffusion particles are silica particles and polymethyl methacrylate particles, and the diffusion-assisting particles are titanium oxide particles.
Preferably, the content of the silica particles and the polymethyl methacrylate particles is 1: 1.
Preferably, the particle diameters of the diffusion-assisting particles and the diffusion particles in the first diffusion layer are 120-150 nm.
Preferably, the particle diameters of the diffusion-assisting particles and the diffusion particles in the second diffusion layer are 60 to 100 nm.
Preferably, the thickness of the first diffusion layer and the second diffusion layer is 40-60 μm.
Preferably, the substrate layer is a PET substrate and has a thickness of 100 to 200 μm.
The invention also provides a preparation method of the optical diffusion film, which comprises the following steps:
coating liquid raw materials of first diffusion layer of coating on the substrate layer, drying process, coating liquid raw materials of second diffusion layer of substrate layer downside coating, drying process, ageing treatment forms first diffusion layer and second diffusion layer: and the second diffusion layer and the first diffusion layer are internally provided with diffusion-assisting particles and diffusion particles, and the content of the diffusion-assisting particles and the diffusion particles in the second diffusion layer is greater than that of the diffusion-assisting particles and the diffusion particles in the first diffusion layer.
Preferably, the preparation method further comprises:
mixing 50 parts of diluent, 10 parts of diffusion particles, 2 parts of diffusion-aid particles, 30 parts of adhesive and 2 parts of cross-linking agent in parts by weight to prepare a coating liquid raw material of the first diffusion layer;
the coating liquid raw material for the second diffusion layer was prepared by mixing 50 parts by weight of a diluent, 16 parts by weight of diffusion particles, 3 parts by weight of diffusion-assisting particles, 30 parts by weight of a binder, and 2 parts by weight of a crosslinking agent.
Preferably, the preparation method further comprises:
adding 50 parts by weight of diluent, 10 parts by weight of diffusion particles and 2 parts by weight of diffusion-aid particles into a dispersion machine, dispersing for 20-30 min at the rotating speed of 1000r/min, then adding 30 parts by weight of adhesive, dispersing for 10-15 min at the rotating speed of 700r/min, then adding 2 parts by weight of cross-linking agent, and dispersing for 15-20 min at the rotating speed of 500r/min to prepare a coating liquid raw material of the first diffusion layer;
adding 50 parts by weight of diluent, 16 parts by weight of diffusion particles and 3 parts by weight of diffusion-aid particles into a dispersion machine, dispersing for 20-30 min at the rotating speed of 1000r/min, then adding 30 parts by weight of adhesive, dispersing for 10-15 min at the rotating speed of 700r/min, then adding 2 parts by weight of cross-linking agent, and dispersing for 15-20 min at the rotating speed of 500r/min to prepare a coating liquid raw material of the second diffusion layer.
Preferably, the preparation method specifically comprises the following steps:
coating liquid raw materials of coating first diffusion layer on the substrate layer, 100 ℃ drying process 30s, coating liquid raw materials of coating second diffusion layer of substrate layer downside, 100 ℃ drying process 30s, ageing treatment 60min under 55 ℃ ageing temperature, formation first diffusion layer and second diffusion layer: and the second diffusion layer and the first diffusion layer are internally provided with diffusion-assisting particles and diffusion particles, and the content of the diffusion-assisting particles and the diffusion particles in the second diffusion layer is greater than that of the diffusion-assisting particles and the diffusion particles in the first diffusion layer.
A backlight module comprises the optical diffusion film.
Compared with the prior art, the detailed description of the application is as follows:
the optical diffusion film of the invention comprises the following components in sequence from top to bottom: the substrate comprises a first diffusion layer, a substrate layer and a second diffusion layer; the diffusion particles and the diffusion-assisting particles arranged in the first diffusion layer and the second diffusion layer can generate a 'Tyndall effect' in the optical diffusion layer to scatter light, and the light is refracted by the diffusion particles with different particle sizes, so that the transmittance of the optical diffusion film is improved. Diffusion particles play a role in diffusion, the transmittance of the optical diffusion film is improved, the content of diffusion-assisting particles and diffusion particles in the second diffusion layer is larger than that of diffusion-assisting particles and diffusion particles in the first diffusion layer, the first diffusion layer is close to a light source, light rays are diffused through the first diffusion layer and then diffused through the second diffusion layer, the light scattering effect is gradually enhanced, the light transmittance of the optical diffusion film is improved, the irradiation area of the light rays is increased, and the light emitting of the backlight module is uniform. The particle diameters of diffusion-assisting particles and diffusion particles in the second diffusion layer are smaller than those of the diffusion-assisting particles and the diffusion particles in the first diffusion layer, and the larger the particle diameter is, the smaller the deflection angle of the light wave is, and the smaller the diffusivity is; the smaller the particle size is, the larger the light wave deflection angle is, the higher the diffusivity is, the arrangement of two diffusion layers gradually reduces the particle size and improves the diffusivity, and the situation that the atomization rate of the body is improved due to a single layer of larger or smaller diffusion particles, so that the body is blurred when watching objects and the watching effect of the body is influenced is avoided. The diffusion particles are silicon dioxide particles and polymethyl methacrylate particles, the diffusivity of the two diffusion particles is different, the two diffusion particles and the diffusion-assisting particles act together, the transmittance and the atomization effect are improved, and the thickness of the backlight module is improved
The preparation method comprises the steps of coating the coating liquid raw material of the first diffusion layer on the substrate layer, drying, coating the coating liquid raw material of the second diffusion layer on the lower side of the substrate layer, drying, aging and forming the first diffusion layer and the second diffusion layer.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to specific embodiments.
Example 1
An optical diffusion film, comprising in order from top to bottom:
the thickness of the first diffusion layer is 50 microns, and diffusion-assisting particles and diffusion particles are arranged in the first diffusion layer and have the particle size of 120-150 nm;
a substrate layer with a thickness of 150 μm
A second diffusion layer; the thickness of the second diffusion layer is 50 micrometers, and diffusion-assisting particles and diffusion particles are arranged in the second diffusion layer, and the particle sizes of the diffusion-assisting particles and the diffusion particles are 60-100 nm;
wherein,
the diffusion particles are silica particles and polymethyl methacrylate particles, and the content of the silica particles and the polymethyl methacrylate particles is 1: 1; the diffusion-assisting particles are titanium oxide particles;
the substrate layer is a PET substrate.
The preparation method of the optical diffusion film comprises the following steps:
adding 50 parts by weight of diluent, 5 parts by weight of silicon dioxide particles, 5 parts by weight of polymethyl methacrylate particles and 2 parts by weight of titanium oxide particles into a dispersion machine, dispersing for 20-30 min at the rotating speed of 1000r/min, then adding 30 parts by weight of adhesive, dispersing for 10-15 min at the rotating speed of 700r/min, then adding 2 parts by weight of cross-linking agent, and dispersing for 15-20 min at the rotating speed of 500r/min to prepare a coating liquid raw material of a first diffusion layer;
adding 50 parts by weight of diluent, 8 parts by weight of silicon dioxide particles, 8 parts by weight of polymethyl methacrylate particles and 3 parts by weight of titanium oxide particles into a dispersion machine, dispersing for 20-30 min at the rotating speed of 1000r/min, then adding 30 parts by weight of adhesive, dispersing for 10-15 min at the rotating speed of 700r/min, then adding 2 parts by weight of cross-linking agent, and dispersing for 15-20 min at the rotating speed of 500r/min to prepare a coating liquid raw material of a second diffusion layer;
coating a coating liquid raw material of a first diffusion layer on a substrate layer, drying at 100 ℃ for 30s, coating a coating liquid raw material of a second diffusion layer on the lower side of the substrate layer, drying at 100 ℃ for 30s, and aging at 55 ℃ for 60min to form a first diffusion layer and a second diffusion layer;
wherein,
the diluent is toluene (commercially available);
the adhesive is an acrylic adhesive (commercially available);
the crosslinker is 1, 6-hexamethylene diisocyanate (commercially available).
A backlight module comprises the optical diffusion film.
Example 2
This example differs from example 1 only in that:
a substrate layer with a thickness of 100 μm;
the thickness of the first diffusion layer is 40 μm;
the thickness of the second diffusion layer is 40 μm.
Example 3
This example differs from example 1 only in that:
a substrate layer with a thickness of 200 μm;
the thickness of the first diffusion layer is 60 mu m;
the thickness of the second diffusion layer is 60 μm.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. An optical diffusion film, comprising from top to bottom in sequence: the substrate comprises a first diffusion layer, a substrate layer and a second diffusion layer; and the second diffusion layer and the first diffusion layer are internally provided with diffusion-assisting particles and diffusion particles, the content of the diffusion-assisting particles and the diffusion particles in the second diffusion layer is greater than that of the diffusion-assisting particles and the diffusion particles in the first diffusion layer, and the particle diameters of the diffusion-assisting particles and the diffusion particles in the second diffusion layer are smaller than those of the diffusion-assisting particles and the diffusion particles in the first diffusion layer.
2. The optical diffusion film according to claim 1, wherein the diffusion particles are silica particles and polymethyl methacrylate particles, and the diffusion-assisting particles are titanium oxide particles.
3. The optical diffuser film of claim 2, wherein the silica particles and polymethylmethacrylate particles are present in a ratio of 1: 1.
4. The optical diffusion film according to claim 1, wherein the particle diameters of the diffusion-assisting particles and the diffusion particles in the first diffusion layer are 120 to 150nm, and the particle diameters of the diffusion-assisting particles and the diffusion particles in the second diffusion layer are 60 to 100 nm.
5. The optical diffusion film according to claim 1, wherein the first diffusion layer and the second diffusion layer have a thickness of 40 to 60 μm.
6. A method for producing an optical diffusion film according to any one of claims 1 to 5, comprising:
coating liquid raw materials of first diffusion layer of coating on the substrate layer, drying process, coating liquid raw materials of second diffusion layer of substrate layer downside coating, drying process, ageing treatment forms first diffusion layer and second diffusion layer: and the second diffusion layer and the first diffusion layer are internally provided with diffusion-assisting particles and diffusion particles, and the content of the diffusion-assisting particles and the diffusion particles in the second diffusion layer is greater than that of the diffusion-assisting particles and the diffusion particles in the first diffusion layer.
7. The method of manufacturing according to claim 6, further comprising:
mixing 50 parts of diluent, 10 parts of diffusion particles, 2 parts of diffusion-aid particles, 30 parts of adhesive and 2 parts of cross-linking agent in parts by weight to prepare a coating liquid raw material of the first diffusion layer;
the coating liquid raw material for the second diffusion layer was prepared by mixing 50 parts by weight of a diluent, 16 parts by weight of diffusion particles, 3 parts by weight of diffusion-assisting particles, 30 parts by weight of a binder, and 2 parts by weight of a crosslinking agent.
8. The method of manufacturing according to claim 6, further comprising:
adding 50 parts by weight of diluent, 10 parts by weight of diffusion particles and 2 parts by weight of diffusion-aid particles into a dispersion machine, dispersing for 20-30 min at the rotating speed of 1000r/min, then adding 30 parts by weight of adhesive, dispersing for 10-15 min at the rotating speed of 700r/min, then adding 2 parts by weight of cross-linking agent, and dispersing for 15-20 min at the rotating speed of 500r/min to prepare a coating liquid raw material of the first diffusion layer;
adding 50 parts by weight of diluent, 16 parts by weight of diffusion particles and 3 parts by weight of diffusion-aid particles into a dispersion machine, dispersing for 20-30 min at the rotating speed of 1000r/min, then adding 30 parts by weight of adhesive, dispersing for 10-15 min at the rotating speed of 700r/min, then adding 2 parts by weight of cross-linking agent, and dispersing for 15-20 min at the rotating speed of 500r/min to prepare a coating liquid raw material of the second diffusion layer.
9. The preparation method according to claim 6, wherein the preparation method specifically comprises:
coating liquid raw materials of coating first diffusion layer on the substrate layer, 100 ℃ drying process 30s, coating liquid raw materials of coating second diffusion layer of substrate layer downside, 100 ℃ drying process 30s, ageing treatment 60min under 55 ℃ ageing temperature, formation first diffusion layer and second diffusion layer: and the second diffusion layer and the first diffusion layer are internally provided with diffusion-assisting particles and diffusion particles, and the content of the diffusion-assisting particles and the diffusion particles in the second diffusion layer is greater than that of the diffusion-assisting particles and the diffusion particles in the first diffusion layer.
10. A backlight module comprising the optical diffusion film according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173751.3A CN112965151A (en) | 2021-02-06 | 2021-02-06 | Optical diffusion film, preparation method thereof and backlight module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173751.3A CN112965151A (en) | 2021-02-06 | 2021-02-06 | Optical diffusion film, preparation method thereof and backlight module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200900744A (en) * | 2007-06-27 | 2009-01-01 | Ken Winston | Double-layer light-reflecting film |
| CN102928900A (en) * | 2012-10-19 | 2013-02-13 | 宁波激智新材料科技有限公司 | Warping-resistant optical thin film, preparation method thereof and display device using optical thin film |
| CN202904046U (en) * | 2012-10-10 | 2013-04-24 | 江阴通利光电科技有限公司 | Optical diffusion barrier |
| CN103412356A (en) * | 2013-08-30 | 2013-11-27 | 浙江元泰特种膜有限公司 | Optical diffusion film and preparation method of optical diffusion film |
| CN107942421A (en) * | 2017-11-30 | 2018-04-20 | 宁波激智科技股份有限公司 | A kind of optical diffusion and preparation method thereof |
| CN110007382A (en) * | 2019-02-21 | 2019-07-12 | 合肥翰博星辰高新材料有限公司 | A kind of scratch resistance diffusion barrier and its processing technology |
-
2021
- 2021-02-06 CN CN202110173751.3A patent/CN112965151A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200900744A (en) * | 2007-06-27 | 2009-01-01 | Ken Winston | Double-layer light-reflecting film |
| CN202904046U (en) * | 2012-10-10 | 2013-04-24 | 江阴通利光电科技有限公司 | Optical diffusion barrier |
| CN102928900A (en) * | 2012-10-19 | 2013-02-13 | 宁波激智新材料科技有限公司 | Warping-resistant optical thin film, preparation method thereof and display device using optical thin film |
| CN103412356A (en) * | 2013-08-30 | 2013-11-27 | 浙江元泰特种膜有限公司 | Optical diffusion film and preparation method of optical diffusion film |
| CN107942421A (en) * | 2017-11-30 | 2018-04-20 | 宁波激智科技股份有限公司 | A kind of optical diffusion and preparation method thereof |
| CN110007382A (en) * | 2019-02-21 | 2019-07-12 | 合肥翰博星辰高新材料有限公司 | A kind of scratch resistance diffusion barrier and its processing technology |
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