CN108614315A - A kind of optical diffusion film - Google Patents
A kind of optical diffusion film Download PDFInfo
- Publication number
- CN108614315A CN108614315A CN201810739460.4A CN201810739460A CN108614315A CN 108614315 A CN108614315 A CN 108614315A CN 201810739460 A CN201810739460 A CN 201810739460A CN 108614315 A CN108614315 A CN 108614315A
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- China
- Prior art keywords
- diffusion
- particle
- big
- optical
- diffusion particle
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 82
- 230000003287 optical effect Effects 0.000 title claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 239000010408 film Substances 0.000 claims description 21
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims 1
- 239000012788 optical film Substances 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 102100026735 Coagulation factor VIII Human genes 0.000 description 1
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 241001597008 Nomeidae Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000000007 visual effect Effects 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
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The present invention relates to a kind of optical diffusion films, the optical diffusion film includes substrate layer and diffusion layer, the big diffusion particle of diffusion layer is arranged in a matrix on base material, it is very close to each other between adjacent big diffusion particle, junction between big diffusion particle forms the continuous shape of convex-concave, several small diffusion particles are distributed in its recess, the small diffusion particle distribution is no more than the height for the peak value line for being arranged in the two neighboring big diffusion particle on substrate layer.Optical diffusion film of the present invention effectively expands the regional perspective of light diffusion, keeps light diffusion more uniform, soft, full, effectively improves the scattering uniformity of diffusion barrier.
Description
Technical field
The present invention relates to optical projection Material Field, especially a kind of optical diffusion film.
Background technology
Optical diffusion film is widely used in the device that liquid crystal display, advertising lamp box, illuminator etc. need light source, especially
It is in liquid crystal display device and LED applications.LED and liquid crystal display device are primarily present that light is uneven, dazzles in optics level
The problems such as mesh, influence it in illumination and the application of display field, especially the fast development of liquid crystal display device in recent years and its
Extensive use in mobile communication display screen, computer monitor, large-size liquid crystal television makes people expand light in display device
The performance requirement for dissipating film improves increasingly.The main function of optical diffusion film is promotion light luminance, and by the soft dispersion of light, for display
Device and lamps and lanterns provide a uniform area source, play the role of widening visual angle.LED and liquid crystal display device are in optics level master
There are light it is uneven, dazzling the problems such as, influence it in illumination and the application of display field.
Invention content
The present invention for overcome the deficiencies in the prior art, provides a kind of optical diffusion film, and specific technical solution is as follows：The diffusion
The structure of film makes light be passed through in the different diffusion particle of particle size and refractive index, and refraction, reflection and scattering occurs
Phenomenon can be such that light radiation area increases, and the light for disseminating out is soft uniformly, and chroma stability forms uniform area light source, reaches
The effect of optics diffusion.
The technical solution adopted by the present invention is a kind of optical diffusion film, which includes transparent substrate layer and diffusion layer,
Substrate layer be PU, PP, PMMA, PET, PC, vinyl-based one or more mixtures, diffusion layer be several spherical shapes, spheroid shape,
The big diffusion particle of hemispherical, semielliptical shape or triangle is arranged in a matrix on base material, and the grain size of big diffusion particle is big
Small is 20um-40um, and ranges of indices of refraction is very close to each other between adjacent particles between 1.4-2.2, wherein spherical and spheroid shape
Big diffusion particle only has at most 1/2 to expose in substrate surface, and section forms a convex-concave sequential like, all divides in entire plane recess
It is furnished with the small diffusion particle that several particle sizes are 1um-7um, ranges of indices of refraction is between 1.4-1.65, the particle distribution model
It encloses no more than the height for arranging two neighboring big diffusion particle peak value line on base material.
The present invention relates to a kind of optical diffusion film, which effectively expands the regional perspective of light diffusion, makes light diffusion more
Add uniform, soft, full, obscures site, clear, bright, lively feeling that overall effect gives effectively improves diffusion barrier
Scatter the uniformity.
Description of the drawings
Fig. 1 is the schematic cross-section of optical diffusion film in the specific embodiment of the invention.
Fig. 2 is the schematic cross-section of optical diffusion film in another specific embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, a kind of optical diffusion film 10 is used for optical projection material, transparent substrate layer 20 and diffusion layer 30, expands
The big diffusion particle 40 for dissipating layer 30 is arranged in a matrix on base material, very close to each other, section shape between adjacent big diffusion
At the continuous shape of convex-concave, several small diffusion particles 50 are all distributed in entire plane recess, the small diffusion particle distribution
No more than the height for arranging two neighboring big diffusion particle peak value line 60 on base material.
Transparent substrate layer is that transparent material is constituted, by PU, PP, PMMA, PET, PC, vinyl-based one or more
Mixture is made, and its light transmission rate is more than 70%, such as PMMA, PC, PVC, PS, PET, PETG, transparent ABS, transparent PP, transparent
PA, SAN (also known as AS), (also known as K resins), MS, MBS, PES, J.D system, CR-39, TPX, HEMA, F4, F3, EFP, PVF,
The modification derivant of PVDF, EP, PF, UP, cellulose acetate, nitrocellulose and EVA etc. and above-mentioned material, by above-mentioned one kind
Or a variety of mixing are constituted.
As shown in Figs. 1-2, diffusion layer be several spherical shapes, spheroid shape, hemispherical, triangle or semielliptical shape big diffusion grain
Son is arranged in a matrix on base material, spherical or triangle therein is only enumerated in the embodiment of the present invention, but be not limited to
This.
Big diffusion particle is arranged in a matrix on base material, and the particle size of big diffusion particle is 20um-40um, folding
Rate range is penetrated between 1.4-2.2, it is very close to each other between adjacent big diffusion particle, wherein spherical and spheroid shape section big diffusion
Particle only has at most 1/2 to expose in base material layer surface, and section forms a convex-concave sequential like, is all distributed in entire plane recess
It is the small diffusion particle of 1um-7um to have several particle sizes, and ranges of indices of refraction is between 1.4-1.65, small diffusion particle distribution
Range is no more than the height for the peak value line for being arranged in the two neighboring big diffusion particle on substrate layer.
Section is exposed substantially for the big diffusion particle of triangle to be formed continuously between base material layer surface, triangle
Convex-concave profile, recess fill the small diffusion particle that several particle sizes are 1um-7um, and small diffusion particle distribution is no more than row
It is listed in the height of the peak value line of the two neighboring big diffusion particle on substrate layer.
The diffusion layer of above structure and the process of substrate layer bonding be vacuum film formation technique, colloidal sol-gel film at
One or more being made of membrane process or/or self-organizing forming thin film technique.Substrate layer and diffusion layer, by hot pressing, gluing etc.
Final products are made in combination process.Class method that but it is not limited to this.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of optical diffusion film, which is characterized in that the optical diffusion film includes substrate layer and diffusion layer, the big diffusion grain of diffusion layer
Son is arranged in a matrix on base material, very close to each other between adjacent big diffusion particle, the junction between big diffusion particle
The continuous shape of convex-concave is formed, several small diffusion particles are distributed in its recess, the small diffusion particle distribution is no more than
It is arranged in the height of the peak value line of the two neighboring big diffusion particle on substrate layer.
2. optical diffusion film according to claim 1, which is characterized in that transparent substrate layer be PU, PP, PMMA, PET, PC,
Vinyl-based one or more mixtures.
3. optical diffusion film according to claim 1, which is characterized in that the section of the big diffusion particle of the diffusion layer is ball
The shape of one kind in shape, spheroid shape, hemispherical, half elliptic or triangle, small diffusion particle is round, oval, taper
Or one kind in irregular shape.
4. optical film according to claim 3, which is characterized in that when big diffusion particle is spherical and spheroid shape, only extremely
More 1/2 expose in base material layer surface, and section forms a convex-concave sequential like.
5. optical diffusion film according to claim 1, which is characterized in that the particle size of the big diffusion particle is 20um-
40um, ranges of indices of refraction is between 1.4-2.2.
6. optical diffusion film according to claim 1, which is characterized in that the particle size of the small diffusion particle is 1um-
7um, ranges of indices of refraction 1.4-1.65.
7. optical diffusion film according to claim 1, which is characterized in that the refractive index of affiliated big diffusion particle is more than or less than
The refractive index of small diffusion particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739460.4A CN108614315A (en) | 2018-07-06 | 2018-07-06 | A kind of optical diffusion film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739460.4A CN108614315A (en) | 2018-07-06 | 2018-07-06 | A kind of optical diffusion film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108614315A true CN108614315A (en) | 2018-10-02 |
Family
ID=63666262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810739460.4A Pending CN108614315A (en) | 2018-07-06 | 2018-07-06 | A kind of optical diffusion film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108614315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111443403A (en) * | 2020-04-06 | 2020-07-24 | 杭州和顺科技股份有限公司 | Diffusion type dual-waveband absorption light filter film |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070012941A (en) * | 2005-07-25 | 2007-01-30 | 주식회사 코오롱 | Light-diffusion film |
| KR20080087436A (en) * | 2007-03-27 | 2008-10-01 | 주식회사 코오롱 | Prism sheet |
| CN102508326A (en) * | 2011-11-24 | 2012-06-20 | 合肥乐凯科技产业有限公司 | Optical diffusion barrier with high haze and high brightness and liquid crystal display backlight source using optical diffusion barrier |
| CN106154367A (en) * | 2016-08-23 | 2016-11-23 | 苏州大学 | A kind of light diffusing sheet and preparation method |
| CN211206829U (en) * | 2018-07-06 | 2020-08-07 | 深圳市光科全息技术有限公司 | Light diffusion film |
-
2018
- 2018-07-06 CN CN201810739460.4A patent/CN108614315A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070012941A (en) * | 2005-07-25 | 2007-01-30 | 주식회사 코오롱 | Light-diffusion film |
| KR20080087436A (en) * | 2007-03-27 | 2008-10-01 | 주식회사 코오롱 | Prism sheet |
| CN102508326A (en) * | 2011-11-24 | 2012-06-20 | 合肥乐凯科技产业有限公司 | Optical diffusion barrier with high haze and high brightness and liquid crystal display backlight source using optical diffusion barrier |
| CN106154367A (en) * | 2016-08-23 | 2016-11-23 | 苏州大学 | A kind of light diffusing sheet and preparation method |
| CN211206829U (en) * | 2018-07-06 | 2020-08-07 | 深圳市光科全息技术有限公司 | Light diffusion film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111443403A (en) * | 2020-04-06 | 2020-07-24 | 杭州和顺科技股份有限公司 | Diffusion type dual-waveband absorption light filter film |
| CN111443403B (en) * | 2020-04-06 | 2023-10-10 | 杭州和顺科技股份有限公司 | Diffusion type dual-band absorption filter film |
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