CN108196327A - A kind of scratch resistance optical diffusion and preparation method thereof - Google Patents
A kind of scratch resistance optical diffusion and preparation method thereof Download PDFInfo
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- CN108196327A CN108196327A CN201711260206.8A CN201711260206A CN108196327A CN 108196327 A CN108196327 A CN 108196327A CN 201711260206 A CN201711260206 A CN 201711260206A CN 108196327 A CN108196327 A CN 108196327A
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- antiblocking layers
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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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optical Elements Other Than Lenses (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to a kind of optical diffusion, especially a kind of scratch resistance optical diffusion and preparation method thereof.In order to which the antiblocking layers for solving the problems, such as existing optical diffusion easily scratch light guide plate, the present invention provides a kind of scratch resistance optical diffusion and preparation method thereof.The diffusion barrier includes substrate layer, light diffusion layer, antiblocking layers, and the light diffusion layer is located at the side of the substrate layer, and the antiblocking layers are located at the opposite side of the substrate layer；The antiblocking layers include bubble structure.The antiblocking layers of the optical diffusion are not easy to scratch light guide plate, and simple in structure, easy to make.
Description
Technical field
The present invention relates to a kind of optical diffusion, especially a kind of scratch resistance optical diffusion and preparation method thereof.
Background technology
Optical diffusion is widely used in the fields such as LCD backlight module displays device, advertisement background illumination, lamp box advertisement.Especially
In LCD backlight module displays device, diffusion barrier is crucial component for it.Diffusion barrier mainly uniformly changes linear light sources
For a uniform area source
Backlight module (BLU) is usually made of reflector plate, light guide plate, optical film (diffusion barrier, brightness enhancement film).Existing market is normal
Light guide plate is mainly polymethyl methacrylate (acrylic), polycarbonate (PC), and surface pencil hardness is high, very type
It is good, but its is expensive, flexibility is poor, not easy to be processed.In order to save the cost of backlight module, the material of light guide plate by
Gradually it is changed into polyacrylate organic-inorganic nanocomposite (MS), flexibility is good, production easy to process, but its table
Face pencil hardness declines, itself scratch resistant performance declines.
General optical diffusion includes base material, front light diffusion layer and back side antiblocking layers.Diffusion layer and antiblocking layers
In it is general all comprising resin film forming matter, light diffusion particle (PMMA, PBMA, PA, PU, PS etc.), auxiliary agent.
The antiblocking layers of optical diffusion contain anti-stick particle, during transport and vibration test meeting and contact lead
Tabula rasa generates friction, and light guide plate easily scratches, and liquid crystal display die set is caused to occur bad.
Invention content
In order to which the antiblocking layers for solving the problems, such as existing optical diffusion easily scratch light guide plate, the present invention provides a kind of anti-zoned
Hinder optical diffusion and preparation method thereof.The antiblocking layers of the optical diffusion include bubble structure, are not easy to scratch light guide plate, and
It is simple in structure, easy to make.
In order to solve the above-mentioned technical problem, the present invention use following technical solution for.
The present invention provides a kind of scratch resistance optical diffusion, and the diffusion barrier includes substrate layer, light diffusion layer, prevents adhesion
Layer, the light diffusion layer are located at the side of the substrate layer, and the antiblocking layers are located at the opposite side of the substrate layer；It is described anti-
Adhering layer includes bubble structure.
Further, the bubble is air bubble.
Further, in the anti scuffing optical diffusion, the antiblocking layers do not include resist blocking and that particle.
A kind of scratch resistance optical diffusion, including base material, light diffusion layer, antiblocking layers, light diffusion layer forms a film comprising resin
Object, light diffusion particle, auxiliary agent；Antiblocking layers include resin film forming matter, air bubble, auxiliary agent.
Further, the thickness of the substrate layer is 25-300 μm.The thickness of the smooth diffusion coating is 21-23 μm.Institute
The thickness for stating antiblocking layers is 7-10 μm.
Further, in the anti scuffing optical diffusion, the material of the substrate layer is selected from poly terephthalic acid
One kind in glycol ester, polymethyl methacrylate, makrolon, polyamide, polyimides or polystyrene or at least two
The combination of kind.
Further, in the anti scuffing optical diffusion, the light diffusion layer includes resin film forming matter, light diffusion
Particle.
Further, in the anti scuffing optical diffusion, it is total that the weight of the smooth diffusion particle accounts for light diffusion layer
The 51% of weight.
Further, the light diffusion layer includes resin film forming matter and diffusion particle, and the resin film forming matter is selected from propylene
A kind of in acid resin, polyurethane, propylene polyalcohol or epoxy resin or at least two combination.
Further, the light diffusion particle in the light diffusion layer can be selected polymethyl methacrylate (PMMA) particle,
Vinalac 5920 (PBMA) particle, polyethylene (PE) particle, polyamide (PA) particle, gathers polypropylene (PP) particle
A kind of in styrene (PS) particle, TiO 2 particles, silicon dioxide granule or organic silicon particle or at least two group
It closes.
Further, in the anti scuffing optical diffusion, the size of the bubble in the antiblocking layers is 2-9 μ
m。
Further, the producing method of the antiblocking layers hollow bubble of scratch resistance optical diffusion is in resin film forming matter
Add in foaming agent, foamable.
Further, in the anti scuffing optical diffusion, the thickness of the antiblocking layers is 7-10 μm.
Further, auxiliary agent is selected from photoinitiator, photopolymerization promoter, levelling agent, foaming agent, curing agent, slipping agent, resists
Electrostatic agent, antioxidant or one kind in nucleating agent (i.e. nucleating agent) or at least two combination.
Further, auxiliary agent is selected from photoinitiator, levelling agent, foaming agent, curing agent, slipping agent, antistatic agent, nucleating agent
In one kind or at least two combination.
Further, the foaming agent in the antiblocking layers of scratch resistance optical diffusion be selected from azo-compound foaming agent or
A kind of in nitroso compound foaming agent or at least two mixing.
Further, in preparation process, the material of antiblocking layers is first configured to coating fluid, and the coating fluid includes resin
Adhesive and foaming agent, the additive amount of the foaming agent are the 0.4%-0.6% of coating fluid of preventing adhesion, and the content is weight hundred
Divide content.
In preparation process, the material of the light diffusion layer is first configured to diffusion coating fluid, and the diffusion coating fluid includes
Following components：UV acrylic resins 16.2%, photoinitiator 2.9%, light diffusion particle 20.4%, solvent 60%, auxiliary agent
0.5%.
Further, the smooth diffusion particle includes polymethyl methacrylate (PMMA light diffusion particle) 14.9%, gathers
N-BMA (PBMA light diffusion particle) 5.5%.
Further, the solvent in the diffusion coating fluid includes butyl acetate 30%, butanone 30%.
Further, the auxiliary agent in the diffusion coating fluid includes levelling agent, antistatic agent.
Further, the auxiliary agent in the diffusion coating fluid includes levelling agent, antistatic agent and slipping agent.
In preparation process, the material of the antiblocking layers is first configured to anti-sticking coating fluid, and the anti-sticking coating fluid includes
Following components：Acrylic resin 16.2%, isocyanate curing agent 2.9%, foaming agent 0.4-0.6%, solvent 79.7-
79.9%, auxiliary agent 0.6%.
Further, the solvent in the anti-sticking coating fluid includes butyl acetate, butanone.
Further, the auxiliary agent in the anti-sticking coating fluid includes levelling agent, nucleating agent and antistatic agent.
Further, in coating fluid is spread, the solid constituent of UV acrylic resins：60%.Polymethyl methacrylate
(PMMA) 18 μm of the average grain diameter of light diffusion particle, the coefficient of dispersion：50%.Vinalac 5920 (PBMA) light spreads grain
18 μm of the average grain diameter of son, the coefficient of dispersion：40%.
Further, in anti-sticking coating fluid, the solid constituent of acrylic resin：100%.Isocyanate curing agent is consolidated
Body ingredient：50%.
Originally the preparation method that a kind of anti scuffing optical diffusion is provided is returned, the method includes following step：
(1) material of light diffusion layer is configured to diffusion coating fluid；
(2) will diffusion coating solution on a surface of substrate layer, be formed by curing light diffusion layer；
(3) material of antiblocking layers is configured to anti-sticking coating fluid；
(4) anti-sticking coating solution is formed by curing antiblocking layers on another surface of substrate layer.
Further, the light diffusion layer of diffusion barrier of the invention is that appropriate light diffusion grain is added in resin film forming matter
Son, auxiliary agent and appropriate solvent are deployed into coating fluid, using rod coating method, nick rubbing method, scraper for coating method, spray coating method etc.
Coating method is solidified to form by dry etc..
Further, the antiblocking layers of diffusion barrier of the invention are that appropriate foaming agent etc. is added in resin film forming matter
Auxiliary agent and appropriate solvent are deployed into coating fluid, using paintings such as rod coating method, nick rubbing method, scraper for coating method, spray coating methods
Mode for cloth is solidified to form by heating foaming, dry etc..
Compared with prior art, the antiblocking layers of scratch resistance optical diffusion of the invention are used without using anti-stick particle
Air bubble replaces anti-stick particle, increases the translucency and flexibility of antiblocking layers, not only increases the briliancy of optical diffusion
And the scuffing of the light guide plate itself generated between antiblocking layers and flexible light-conducting plate due to friction is overcome, while reduce light
Learn the processing cost of diffusion barrier.
Description of the drawings
Fig. 1 is the cross-sectional view of the anti scuffing optical diffusion of embodiment 1 of the present invention.
Specific embodiment
It is described in further detail to the present invention with reference to embodiments.
As shown in Figure 1, anti scuffing optical diffusion provided by the invention, including substrate layer 1, light diffusion layer 2, antiblocking layers
3rd, light diffusion particle 4, air bubble 5, resin film forming matter 6, auxiliary agent 7.
Embodiment 1
According to the material table of table 1, by stirring to get light diffusion layer coating fluid, by coating liquid 188 μm of PET's
Upper surface, ultraviolet lighting curing obtain the light diffusion layer that thickness is 21 μm；According to the material table of table 2, suitable azo is added in
Object foaming agent is closed, by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, heating hair
It steeps and synchronizes curing, obtain thickness as 7 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
1 light diffusion layer coating fluid component list of table
2 antiblocking layers coating fluid component list of table
Embodiment 2
According to the material table of table 3, by stirring to get light diffusion layer coating fluid, by coating liquid 188 μm of PET's
Upper surface, ultraviolet lighting curing obtain the light diffusion layer that thickness is 22 μm；According to the material table of table 4, suitable azo is added in
Object foaming agent is closed, by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, heating hair
It steeps and synchronizes curing, obtain thickness as 9 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
3 light diffusion layer coating fluid component list of table
4 antiblocking layers coating fluid component list of table
Embodiment 3
As described in Example 2, it is 25 μm the difference lies in PET base material thickness is used, test result is shown in Table in 23.
Embodiment 4
As described in Example 2, it is 300 μm the difference lies in PET base material thickness is used, test result is shown in Table in 23.
Embodiment 5
According to the material table of table 5, by stirring to get light diffusion layer coating fluid, by coating liquid 188 μm of PET's
Upper surface, ultraviolet lighting curing obtain the light diffusion layer that thickness is 23 μm；According to the material table of table 6, suitable azo is added in
Object foaming agent is closed, by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, heating hair
It steeps and synchronizes curing, obtain thickness as 10 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
5 light diffusion layer coating fluid component list of table
6 antiblocking layers coating fluid component list of table
Comparative example 1
A kind of diffusion barrier is provided, according to the material table of table 7, by stirring to get light diffusion layer coating fluid, coating fluid is applied
The upper surface of 188 μm of PET is overlayed on, is heating and curing, obtains the light diffusion layer that thickness is 22 μm；According to the material table of table 8, pass through
Antiblocking layers coating fluid is stirred to get, by coating liquid in the lower surface of 188 μm of PET, curing obtains thickness as 7 μm
Antiblocking layers.Reactive blowing agent in antiblocking layers, prevent adhesion particle.Test result be shown in Table in 24.
7 light diffusion layer coating fluid component list of table
8 antiblocking layers coating fluid component list of table
Comparative example 2
A kind of diffusion barrier is provided, according to the material table of table 9, by stirring to get light diffusion layer coating fluid, coating fluid is applied
The upper surface of 188 μm of PET is overlayed on, is heating and curing, obtains the light diffusion layer that thickness is 23 μm；According to the material table of table 10, lead to
It crosses and stirs to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, it is 6 μm anti-sticking to obtain thickness
Even layer.Reactive blowing agent in antiblocking layers, prevent adhesion particle.Test result be shown in Table in 24.
9 light diffusion layer coating fluid component list of table
10 antiblocking layers coating fluid component list of table
Comparative example 3
According to the material table of table 11, by stirring to get light diffusion layer coating fluid, by PET of the coating liquid at 188 μm
Upper surface, be heating and curing, it is 23 μm of light diffusion layer to obtain thickness；According to the material table of table 12, suitable azo is added in
Object foaming agent is closed, by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, heating hair
It steeps and synchronizes curing, obtain thickness as 7 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
11 light diffusion layer coating fluid component list of table
12 antiblocking layers coating fluid component list of table
Comparative example 4
According to the material table of table 13, by stirring to get light diffusion layer coating fluid, by PET of the coating liquid at 188 μm
Upper surface, be heating and curing, it is 22 μm of light diffusion layer to obtain thickness；According to the material table of table 14, suitable azo is added in
Object foaming agent is closed, by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, heating hair
It steeps and synchronizes curing, obtain thickness as 5 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
13 light diffusion layer coating fluid component list of table
14 antiblocking layers coating fluid component list of table
Comparative example 5
According to the material table of table 15, by stirring to get light diffusion layer coating fluid, by PET of the coating liquid at 188 μm
Upper surface, be heating and curing, it is 22 μm of light diffusion layer to obtain thickness；According to the material table of table 16, suitable azo is added in
Object foaming agent is closed, by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, heating hair
It steeps and synchronizes curing, obtain thickness as 8 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
15 light diffusion layer coating fluid component list of table
16 antiblocking layers coating fluid component list of table
Comparative example 6
According to the material table of table 17, by stirring to get light diffusion layer coating fluid, by PET of the coating liquid at 188 μm
Upper surface, be heating and curing, it is 25 μm of light diffusion layer to obtain thickness；According to the material table of table 18, suitable azo is added in
Object foaming agent is closed, by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, heating hair
It steeps and synchronizes curing, obtain thickness as 7 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
17 light diffusion layer coating fluid component list of table
18 antiblocking layers coating fluid component list of table
Comparative example 7：
According to the material table of table 19, by stirring to get light diffusion layer coating fluid, by PET of the coating liquid at 188 μm
Upper surface, ultraviolet lighting curing, it is 21 μm of light diffusion layer to obtain thickness；According to the material table of table 20, suitable idol is added in
Nitrogen compound foaming agent by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, adds
Heat foamable and synchronous curing, obtain thickness as 12 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
19 light diffusion layer coating fluid component list of table
20 antiblocking layers coating fluid component list of table
Comparative example 8：
According to the material table of table 21, by stirring to get light diffusion layer coating fluid, by PET of the coating liquid at 188 μm
Upper surface, ultraviolet lighting curing, it is 23 μm of light diffusion layer to obtain thickness；According to the material table of table 22, suitable idol is added in
Nitrogen compound foaming agent by stirring to get antiblocking layers coating fluid, by coating liquid in the lower surface of 188 μm of PET, adds
Heat foamable and synchronous curing, obtain thickness as 14 μm of antiblocking layers containing air bubble.Test result is shown in Table in 23.
21 light diffusion layer coating fluid component list of table
22 antiblocking layers coating fluid component list of table
Comparative example 9
As described in comparative example 8, the thickness the difference lies in antiblocking layers is 15 μm, and test result is shown in Table in 23.
The friction test for the optical diffusion that the present invention obtains：
Prepare each 10 of the sample of embodiment 1-5 and comparative example 1-9, first implemented with the micro- sem observations of laser co-focusing 3D
Example 1-5, the size of anti-sticking particle and how many in adherent layer bubble and comparative example 1-2 in comparative example 3-9.MS flexibility materials are selected afterwards
The light guide plate surface of matter is smooth and two kinds of band structure, tested under wear-resisting test machine diffusion barrier antiblocking layers and light guide plate it
Between friction effect.
The apparent inspection of light guide plate, is divided into 0 grade of (nothing according to the degree of wear of light guide plate after wearability detection is predominantly tested
Abrasion), 1 (mild wear, but do not influence to use), 2 grades (moderates wear, influence to use), 3 grades (being seriously worn, unusable).
The test result for the diffusion barrier that table 23 embodiment 1-5 and comparative example 3-9 are provided
The test result for the diffusion barrier that 24 comparative example 1-2 of table is provided
As can be seen from Table 23, after antiblocking layers are with inner foaming agents content increase, under identical condition of cure, bubble
It becomes larger, gradually becomes more.Air Bubble Size in antiblocking layers 2-9 μm of number between 51-72 to MS flexible light-conducting plates
The degree of wear it is more excellent.Comparative example 3-6 foaming agent additive amounts are few, and bubble is small in antiblocking layers and number is small, to MS flexibilities
The degree of wear of light guide plate is simultaneously bad；Comparative example 7-9 foaming agent additive amounts are more, and bubble is big in antiblocking layers and number is more, right
It is also bad to the degree of wear of MS flexible light-conducting plates.
As can be seen from Table 24, existing diffusion barrier antiblocking layers use prevents adhesion particle, in identical size and number feelings
It is far short of what is expected for more of the invention to the degree of wear of MS flexible light-conducting plates under condition.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is every
The equivalent changes and modifications done according to the content of present invention are encompassed by the scope of the claims of the present invention.
Claims (10)
1. a kind of scratch resistance optical diffusion, which is characterized in that the diffusion barrier includes substrate layer, light diffusion layer, antiblocking layers,
The light diffusion layer is located at the side of the substrate layer, and the antiblocking layers are located at the opposite side of the substrate layer；It is described anti-sticking
Even layer includes bubble structure.
2. anti scuffing optical diffusion according to claim 1, which is characterized in that the antiblocking layers do not include resist blocking and that
Particle.
3. anti scuffing optical diffusion according to claim 1, which is characterized in that the light diffusion layer forms a film including resin
Object and diffusion particle.
4. anti scuffing optical diffusion according to claim 1, which is characterized in that the material of the substrate layer is selected from poly- pair
One kind in ethylene terephthalate, polymethyl methacrylate, makrolon, polyamide, polyimides or polystyrene
Or at least two combination.
5. anti scuffing optical diffusion according to claim 1, which is characterized in that the light diffusion layer forms a film including resin
Object and light diffusion particle, the resin film forming matter is in acrylic resin, polyurethane, propylene polyalcohol or epoxy resin
It is a kind of or at least two combination.
6. anti scuffing optical diffusion according to claim 5, which is characterized in that the weight of the smooth diffusion particle accounts for light
The 51% of diffusion layer total weight.
7. anti scuffing optical diffusion according to claim 1, which is characterized in that the ruler of the bubble in the antiblocking layers
Very little is 2-9 μm.
8. anti scuffing optical diffusion according to claim 1, which is characterized in that the thickness of the antiblocking layers is 7-10
μm。
9. anti scuffing optical diffusion according to claim 1, which is characterized in that in preparation process, antiblocking layers
Material is first configured to coating fluid, and the coating fluid includes Resin adhesive and foaming agent, and the additive amount of the foaming agent is anti-sticking
The even 0.4%-0.6% of coating fluid, the content are weight percentage.
10. a kind of preparation method of anti scuffing optical diffusion according to any one of claim 1-9, feature exist
In the method includes following step：
(1) material of light diffusion layer is configured to diffusion coating fluid；
(2) will diffusion coating solution on a surface of substrate layer, be formed by curing light diffusion layer；
(3) material of antiblocking layers is configured to anti-sticking coating fluid；
(4) anti-sticking coating solution is formed by curing antiblocking layers on another surface of substrate layer.
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Inventor after: Li Bingjun Inventor after: Li Gang Inventor after: Liu Zhipeng Inventor after: Wen Yongfei Inventor after: Zhao Dongdong Inventor after: Tang Haijiang Inventor after: Zhang Yan Inventor before: Li Gang Inventor before: Liu Zhipeng Inventor before: Li Bingjun Inventor before: Wen Yongfei Inventor before: Zhao Dongdong Inventor before: Tang Haijiang Inventor before: Zhang Yan |
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Application publication date: 20180622 Assignee: NINGBO JIANGBEI EXCITON NEW MATERIAL TECHNOLOGY Co.,Ltd. Assignor: Ningbo Exciton Technology Co.,Ltd. Contract record no.: X2024330000049 Denomination of invention: A scratch resistant optical diffusion film and its preparation method Granted publication date: 20200721 License type: Common License Record date: 20240429 |