CN106707378B - A kind of anti scuffing diffusion barrier and backlight module - Google Patents
A kind of anti scuffing diffusion barrier and backlight module Download PDFInfo
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- CN106707378B CN106707378B CN201611209415.5A CN201611209415A CN106707378B CN 106707378 B CN106707378 B CN 106707378B CN 201611209415 A CN201611209415 A CN 201611209415A CN 106707378 B CN106707378 B CN 106707378B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
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- 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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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Abstract
A kind of anti scuffing diffusion barrier, including transparent substrate, the main diffusion layer on surface over the transparent substrate is set and the anti scuffing backing layer of transparent substrate lower surface is set, the coating fluid component and weight percent of the main diffusion layer are as follows: water-soluble resin lotion 30%~80%, light diffusion particle 10%~65%, function additive 1%~5%, contain water soluble acrylic resin in the water-soluble resin lotion, the percentage that water soluble acrylic resin's weight accounts for the water-soluble resin lotion weight is 40%~70%, the smooth diffusion particle is made of the big particle of different-grain diameter size and granule sub-portfolio.The present invention is nonflammable non-explosive, without security against fire hidden danger, big particle solves the problems, such as that existing optical diffusion is easy prism film to scratch when being applied to backlight module using elastic anti scuffing particle in light diffusion particle, to improve the quality of product, production cost is reduced.
Description
Technical field
The present invention relates to a kind of anti scuffing diffusion barrier and backlight modules.
Background technique
In recent years, various liquid crystal flat-panel display technologies and product rapidly develop, and flat-panel monitor liquid crystal display is to answer at present
With most extensively, each field has been widely applied in the most flat panel display technology of product, product, such as LCD, LED class LCD technology
Applied to TV, mobile phone, laptop, desktop computer monitor, work station, industry monitoring device, global positioning satellite system
System (GPS), personal data processing, game machine, videophone, portable V CD, DVD and some other portable unit.Liquid crystal display
Device mainly includes liquid crystal display panel, backlight module etc..Backlight module is one of the key part and component of liquid crystal display device, and function exists
In well-off brightness and the light source being evenly distributed, it is made normally to show image.Backlight module mainly includes light source, reflection
Piece, light guide plate, lower diffusion barrier, prismatic lens and upper diffusion barrier.Diffusion barrier is used in backlight module (BLU), function is by linear light
Source or point light source are scattered in area source, to provide flat-panel monitor one uniform area source.
While usage amount of the diffusion barrier in display screen gradually increases, the solvent type glue yield for diffusion barrier is also therewith
Increase, the effect of the solvent type glue is to increase the diffusing reflection of light, reduces the influence to the intensity of light, thus bring negative effect
It is that the organic solvent generated in process of production is also being gradually increased, and not yet obtains effective processing and control.Specifically,
Since the coating of diffusion barrier is carried out in a dustless workshop, place is relatively closed, and solvent is not easy to be discharged, and produces to glue
Raw solvent volatilization is excluded by air feed system completely, but existing method is also difficult for solvent to be all discharged, this body to shop worker
Body health care belt carrys out very big influence；Even if all discharges, also cause great harm surrounding enviroment.In addition, relatively closed at one
Space in generate a large amount of organic solvent, also bring very big pressure to the prevention of fire.In order to reduce the discharge of organic solvent,
Part company puts into a huge sum of money and builds recovery system, and construction cost and operating cost are very high, exacerbate the burden of enterprise significantly.
In summary, the discharge of organic solvent how is reduced, the safety that reduces influence to environment, improve operating staff is protected
Shield, becomes the art a great problem urgently to be solved.Existing optical diffusion is all to select solvent type resin simultaneously
Hard diffusion particle is added as film forming matter, what is formed after film forming is hard coat, processes in use after being easy bending and generates folding
Trace and scrap.Meanwhile existing optical diffusion is easy prism film to scratch when being applied to backlight module, and cause product
Quality decline, therefore existing optical diffusion also needs to be further improved.
Summary of the invention
The purpose of the present invention is for during preparing diffusion barrier, reduce because volatile solvent uses cause fire,
A possibility that firing, and harm of the pernicious gas to personnel's body is reduced, while overcoming existing for existing solvent type resin system
The defect of scratch resistance difference, and a kind of anti scuffing diffusion barrier of aqueous, environmental protective is provided.
Technical program of the present invention lies in:
A kind of anti scuffing diffusion barrier, including transparent substrate, setting, the main diffusion layer on surface and setting exist over the transparent substrate
The anti scuffing backing layer of transparent substrate lower surface, the coating fluid component and weight percent of the main diffusion layer are as follows:
Water-soluble resin lotion 30%~80%
Light diffusion particle 10%~65%
Function additive 1%~5%
Contain water soluble acrylic resin in the water-soluble resin lotion, water soluble acrylic resin's weight accounts for institute
State water-soluble resin lotion weight percentage be 40%~70%, the smooth diffusion particle by different-grain diameter size big particle
It is constituted with granule sub-portfolio, the big particle is polybutyl methacrylate (PBMA), polyisobutyl methacrylate (PIBMA)
One or both of, big particle diameter is 30 μm~50 μm, and big particle weight accounts for light diffusion particle total weight percent
10%~40%.
Above-mentioned anti scuffing diffusion barrier, in the anti scuffing diffusion barrier main diffusion layer coating fluid, small particles are poly- methyl-prop
One or more of e pioic acid methyl ester (PMMA), polystyrene (PS), organic silicon particle, the particle diameter distribution of the small particles exists
0.5 μm~30 μm, small particles weight accounts for the 60%~90% of light diffusion particle total weight percent, and the main diffusion layer applies thickness
Degree is the 1/2~3/4 of maximum particle diameter.
Above-mentioned anti scuffing diffusion barrier, in the anti scuffing diffusion barrier main diffusion layer coating fluid, small particles are with one layer or two
Layer is uniformly distributed in main diffusion layer at random, and big particle is alternatively arranged in small particles.
Above-mentioned anti scuffing diffusion barrier, in the anti scuffing diffusion barrier main diffusion layer coating fluid, function additive includes crosslinking
Agent, wetting dispersing agent.
Above-mentioned anti scuffing diffusion barrier, in the anti scuffing diffusion barrier main diffusion layer coating fluid, crosslinking agent is hydrophily fat
Race's isocyanates or polyfunctionality aziridine resin.
Wetting dispersing agent is added in the anti scuffing diffusion barrier main diffusion layer coating fluid in above-mentioned anti scuffing diffusion barrier,
Dosage is the 0.5%~2% of total coating fluid quality.
Above-mentioned anti scuffing diffusion barrier, the substrate layer of the water-based system scratch resistance diffusion barrier are transparent material, by poly- pair
One of ethylene terephthalate (PET), polymethyl methacrylate, polycarbonate, polyamide, polyimides are made,
It is preferred that ethylene glycol terephthalate (PET) film.
A kind of backlight module, including for luminous light source, reflector plate, light guide plate and frame, optical diffusion and prism
Piece, the optical diffusion are above-mentioned anti scuffing diffusion barrier.
The present invention replaces the biggish solvent of harm using almost nil water is endangered.
The beneficial effects of the present invention are:
(1) water-soluble resin lotion of the invention, using water as decentralized medium, no pollution to the environment has apparent green
Environment protection significance；It is nonflammable non-explosive, no security against fire hidden danger.(2) facilitate construction, substantially reduce harm to the human body, be not necessarily to mouth
The safeguard procedures such as cover, breathing mask, without exhaust blower equal solvent processing unit.(3) big particle uses bullet in light diffusion particle
Property anti scuffing particle, solve the problems, such as existing optical diffusion when being applied to backlight module be easy prism film is scratched,
To improve the quality of product, production cost is reduced.
Specific embodiment
Transparent substrate in the present invention is simultaneously not particularly limited its thickness, has good surface smoothness, mechanical strength, resistance to
Warm nature and fast light, weatherability material can be used as the substrate of optical diffusion, general to choose 20 μm~300 μ m thicks,
Its too thin resistance to thermal dimensional stability decline is obvious, too thick, will affect the transmitance of light.To improve substrate surface and coating fluid
Adherence, transparent substrate surface can also can be used by corona or plasma treatment in the pre- priming operation of transparent substrate surface,
To improve the adhesive performance of diffusion coating layer and transparent substrate.
In the present invention, light diffusion particle used in main diffusion coating by different-grain diameter size big particle and granule subgroup
Close constitute, the big particle be one of polybutyl methacrylate (PBMA), polyisobutyl methacrylate (PIBMA) or
Two kinds, particle diameter is 30 μm~50 μm, and big particle weight accounts for the 10%~40% of light diffusion particle total weight percent；Granule
Son be one or more of polymethyl methacrylate (PMMA), polystyrene (PS), organic silicon particle, the small particles
For particle diameter distribution at 0.5 μm~30 μm, small particles weight accounts for the 60%~90% of light diffusion particle total weight percent.
Average particle partial size used in big particle is 30 μm~50 μm, and main diffusion layer coating layer thickness is maximum particle diameter
1/2~3/4.Big average particle size is too low, and light stroke is too short, and light is penetrated without diffusion, and diffusion effect reduces；Greatly
Average particle size is excessively high or particle insertion is very few, is easy to cause very little with binding resin bonded area in coating, and generation falls off
The defects of.Big particle selects one of polybutyl methacrylate (PBMA), polyisobutyl methacrylate (PIBMA) simultaneously
Or the combination of two kinds of particles, big particle are soft particle, provide a soft contact surface for optical diffusion, so as to
It enough effectively prevent scratching prism film.Simultaneously because the condenser performance of big particle can guarantee the condenser performance of coating again.
Average grain diameter used in small particles generally chooses 0.5 μm~30 μm, and small particles of the invention are polymethyl
One or more of sour methyl esters (PMMA), polystyrene (PS), organic silicon particle.Small particles are dispersed in water-soluble resin
Uniformity and covering when improving light in film forming matter through film so that optical diffusion have it is excellent comprehensive
Energy.
In order to reach the higher requirement for being satisfied with mist degree, the small particles of main diffusion coating of the invention are with one or two layers
It closely is arranged in main diffusion layer surface, big particle is alternatively arranged in small particles, with high transmission needed for meeting optical diffusion
Rate and the good harmony of haze.
Small particles weight of the invention accounts for the 60%~90% of light diffusion particle total weight percent.In this formula rate
Under, aqueous anti scuffing optical diffusion is apparently not in dim spot, and effectively prevent the particle reunited during coating fluid supply
The filtration core on liquid feeding pipeline is blocked, reduction feed flow is unsmooth, often replaces filter core or feed flow is uneven, influence coating speed and quality
Defect.
It is 30%~80% water-soluble resin lotion, 10%~65% that main diffusion coating, which includes weight percent, in the present invention
The coating of coating fluid made of light diffusion particle, 1%~10% function additive anchors at one surface of optics basement membrane and forms.It is water-soluble
Main group of resin emulsion becomes water soluble acrylic resin；The water soluble acrylic resin is solid in water-soluble resin lotion
Content accounting is 40%~70%.Function additive includes crosslinking agent, wetting dispersing agent.Crosslinking agent is hydrophilic aliphatic isocyanic acid
Ester or polyfunctionality aziridine crosslinker.0.5%~2% that wetting dispersing agent dosage is total coating fluid quality is added.
For the winding resist blocking and that and antistatic property consideration to anti scuffing diffusion barrier, the present invention is in transparent substrate another side
Equipped with back coating.
The coating method of anti scuffing diffusion barrier of the invention is such as intaglio plate coating, micro- using conventional accurate coating method
Recessed coating, item stitch the modes such as coating, dropping curtain coating to form coating.Various coating methods have its advantage and disadvantage, apply according to specific
Cloth requirement, such as coating fluid viscosity, rolling speed, the suitable coating method of coating layer thickness selection, preferably dimple are coated with.
The present invention is further illustrated combined with specific embodiments below.
Embodiment 1
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
The compositing formula of main diffusion layer prepares masking liquid raw material in accordance with the above-mentioned embodiment 1: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；It is thin that finely dispersed main diffusion layer coating fluid is applied to polyethylene terephthalate
Then the upper surface of transparent substrate layer made of film carries out drying and processing, finally carry out aging process, aging 12 hours to 24 small
When formed diffusion barrier main diffusion layer；The 1/2~3/4 of the partial size with a thickness of maximum PBMA particle of main diffusion layer.
Prepare masking liquid raw material according to the compositing formula of 1 backing layer of embodiment: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the lower surface of transparent substrate layer made of pet film, so
After carry out drying and processing, finally carry out aging process, 12 hours to 24 hours formation backing layers of aging；Backing layer with a thickness of maximum
The 1/2~3/4 of the partial size of PBMA particle；Complete the preparation of anti scuffing diffusion barrier.Manufactured anti scuffing diffusion barrier and luminous light
Source, reflector plate, light guide plate and frame and prismatic lens form a kind of backlight module.
Embodiment 2
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of 2 main diffusion layer of above-described embodiment: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to polymethyl methacrylate film system
At transparent substrate layer upper surface, then carry out drying and processing, finally carry out aging process, 12 hours to 24 hours shapes of aging
At the main diffusion layer of diffusion barrier；The 1/2~3/4 of the partial size with a thickness of maximum PBMA particle of main diffusion layer.
Prepare masking liquid raw material according to the compositing formula of 2 backing layer of embodiment: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the lower surface of transparent substrate layer made of polymethyl methacrylate film, then into
Row drying and processing finally carries out aging process, 12 hours to 24 hours formation backing layers of aging；Backing layer with a thickness of PBMA maximum
The 1/2~3/4 of the partial size of son；Complete the preparation of anti scuffing diffusion barrier.Manufactured anti scuffing diffusion barrier and luminous light source, reflection
Piece, light guide plate and frame and prismatic lens form a kind of backlight module.
Embodiment 3
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of 3 main diffusion layer of above-described embodiment: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to transparent made of polycarbonate film
Then the upper surface of substrate layer carries out drying and processing, finally carry out aging process, 12 hours to 24 hours formation diffusion barriers of aging
Main diffusion layer；The 1/2~3/4 of the partial size with a thickness of maximum PBMA particle of main diffusion layer.
Prepare masking liquid raw material according to the compositing formula of 3 backing layer of embodiment: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the lower surface of transparent substrate layer made of polycarbonate film, is then carried out at drying
Reason, finally carries out aging process, 12 hours to 24 hours formation backing layers of aging；The partial size with a thickness of maximum PBMA particle of backing layer
1/2~3/4；Complete the preparation of anti scuffing diffusion barrier.Manufactured anti scuffing diffusion barrier and luminous light source, reflector plate, leaded light
Plate and frame and prismatic lens form a kind of backlight module.
Embodiment 4
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of 4 main diffusion layer of above-described embodiment: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to transparent base made of polyamide film
Then the upper surface of material layer carries out drying and processing, finally carry out aging process, forms diffusion barrier within aging 12 hours to 24 hours
Main diffusion layer；The 1/2~3/4 of the partial size with a thickness of maximum PBMA particle of main diffusion layer.
Prepare masking liquid raw material according to the compositing formula of 4 backing layer of embodiment: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the lower surface of transparent substrate layer made of polyamide film, is then carried out at drying
Reason, finally carries out aging process, 12 hours to 24 hours formation backing layers of aging；The partial size with a thickness of maximum PBMA particle of backing layer
1/2~3/4；Complete the preparation of anti scuffing diffusion barrier.Manufactured anti scuffing diffusion barrier and luminous light source, reflector plate, leaded light
Plate and frame and prismatic lens form a kind of backlight module.
Embodiment 5
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of 5 main diffusion layer of above-described embodiment: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to polyethylene terephthalate tree
Then the upper surface of transparent substrate layer made of membrane of lipoprotein carries out drying and processing, finally carry out aging process, and aging 12 hours is extremely
Form within 24 hours the main diffusion layer of diffusion barrier；The 1/2~3/4 of the partial size with a thickness of maximum PBMA particle of main diffusion layer.
Prepare masking liquid raw material according to the compositing formula of 5 backing layer of embodiment: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the following table of transparent substrate layer made of pet resin film
Then face carries out drying and processing, finally carry out aging process, 12 hours to 24 hours formation backing layers of aging；Backing layer with a thickness of
The 1/2~3/4 of the partial size of maximum PBMA particle；Complete the preparation of anti scuffing diffusion barrier.Manufactured anti scuffing diffusion barrier and shine
Light source, reflector plate, light guide plate and frame and prismatic lens form a kind of backlight module.
Embodiment 6
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of 6 main diffusion layer of above-described embodiment: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to polyethylene terephthalate tree
Then the upper surface of transparent substrate layer made of membrane of lipoprotein carries out drying and processing, finally carry out aging process, and aging 12 hours is extremely
Form within 24 hours the main diffusion layer of diffusion barrier；The 1/2~3/4 of the partial size with a thickness of maximum PBMA particle of main diffusion layer.
Prepare masking liquid raw material according to the compositing formula of 6 backing layer of embodiment: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the following table of transparent substrate layer made of pet resin film
Then face carries out drying and processing, finally carry out aging process, 12 hours to 24 hours formation backing layers of aging；Backing layer with a thickness of
The 1/2~3/4 of the partial size of maximum PBMA particle；Complete the preparation of anti scuffing diffusion barrier.Manufactured anti scuffing diffusion barrier and shine
Light source, reflector plate, light guide plate and frame and prismatic lens form a kind of backlight module.
Embodiment 7
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of 7 main diffusion layer of above-described embodiment: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to polyethylene terephthalate tree
Then the upper surface of transparent substrate layer made of membrane of lipoprotein carries out drying and processing, finally carry out aging process, and aging 12 hours is extremely
Form within 24 hours the main diffusion layer of diffusion barrier；The 1/2~3/4 of the partial size with a thickness of maximum PBMA particle of main diffusion layer.
Prepare masking liquid raw material according to the compositing formula of 7 backing layer of embodiment: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the following table of transparent substrate layer made of pet resin film
Then face carries out drying and processing, finally carry out aging process, 12 hours to 24 hours formation backing layers of aging；Backing layer with a thickness of
The 1/2~3/4 of the partial size of maximum PBMA particle；Complete the preparation of anti scuffing diffusion barrier.Manufactured anti scuffing diffusion barrier and shine
Light source, reflector plate, light guide plate and frame and prismatic lens form a kind of backlight module.
Embodiment 8
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of 8 main diffusion layer of above-described embodiment: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to transparent made of Kapton
Then the upper surface of substrate layer carries out drying and processing, finally carry out aging process, 12 hours to 24 hours formation diffusion barriers of aging
Main diffusion layer；The 1/2~3/4 of the partial size with a thickness of maximum PBMA particle of main diffusion layer.
Prepare masking liquid raw material according to the compositing formula of 8 backing layer of embodiment: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the lower surface of transparent substrate layer made of Kapton, is then carried out at drying
Reason, finally carries out aging process, 12 hours to 24 hours formation backing layers of aging；The partial size with a thickness of maximum PBMA particle of backing layer
1/2~3/4；Complete the preparation of anti scuffing diffusion barrier.Manufactured anti scuffing diffusion barrier and luminous light source, reflector plate, leaded light
Plate and frame and prismatic lens form a kind of backlight module.
Comparative example 1
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of above-mentioned 1 main diffusion layer of comparative example: by the water-soluble resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to polyethylene terephthalate tree
Then the upper surface of transparent substrate layer made of membrane of lipoprotein carries out drying and processing, finally carry out aging process, and aging 12 hours is extremely
Form within 24 hours the main diffusion layer of diffusion barrier.
Prepare masking liquid raw material according to the compositing formula of 1 backing layer of comparative example: water-soluble resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the following table of transparent substrate layer made of pet resin film
Then face carries out drying and processing, finally carry out aging process, 12 hours to 24 hours formation backing layers of aging；Complete diffusion barrier
Preparation.Manufactured diffusion barrier and luminous light source, reflector plate, light guide plate and frame and prismatic lens form a kind of backlight module.
Comparative example 2
The preparation of main diffusion layer coating fluid:
Backing layer coating fluid is prepared:
Prepare masking liquid raw material according to the compositing formula of above-mentioned 2 main diffusion layer of comparative example: by the solvent type resin cream in formula
Liquid, diffusion particle are added to dispersion 30min to 40min in dispersion machine, and resin cross-linking agent, dispersing agent 10min then is added extremely
Main diffusion layer coating fluid is made in 15min；Finely dispersed main diffusion layer coating fluid is applied to polyethylene terephthalate tree
Then the upper surface of transparent substrate layer made of membrane of lipoprotein carries out drying and processing, finally carry out aging process, and aging 12 hours is extremely
Form within 24 hours the main diffusion layer of diffusion barrier.
Prepare masking liquid raw material according to the compositing formula of 2 backing layer of comparative example: solvent type resin lotion, diffusion particle are added to point
It dissipates and disperses 30min to 40min in machine, resin cross-linking agent, dispersing agent 10min to 15min is then added, backing layer coating fluid is made；
Finely dispersed backing layer coating fluid is applied to the following table of transparent substrate layer made of pet resin film
Then face carries out drying and processing, finally carry out aging process, 12 hours to 24 hours formation backing layers of aging；Complete diffusion barrier
Preparation.Manufactured diffusion barrier and luminous light source, reflector plate, light guide plate and frame and prismatic lens form a kind of backlight module.
Test result see the table below:
Test method is as follows
Mist degree, light transmittance: with NDH~5000 (Japan's electricity color) light transmittance mist degree instrument, optical diffusion in embodiment is measured
Full light light transmittance and mist degree, light is from adherent layer to diffusion layer when test.
Coating adhesion test: 100 section lines are cut into cutter in diffusion barrier layer face, and the size of each section line is
The type professional test adhesive tape of 3M~610 is adhered to the power of 2Kg and is drawn on lattice coating by 1mmX1mm, with 180 ° of angles by 3M glue after 3min
Band is quickly removed from coating surface, and coating adhesion is commented according to the number for staying in the lattice of the section on substrate in coat side is counted
Estimate, is denoted as " N/% ".
Wear-resisting property test: diffusion barrier layer face carries out reciprocating friction with #000 steel wool, bears a heavy burden for 100g/cm2, rubs
Wiping distance is 5cm, and observation is assessed by the scuffing situation of rubbed coat side, to there is not the highest carefully scratched friction time
Number is assessed.
Claims (6)
1. a kind of anti scuffing diffusion barrier including transparent substrate, is arranged the main diffusion layer on surface over the transparent substrate and is arranged saturating
The anti scuffing backing layer of bright substrate lower surface, which is characterized in that the coating fluid component and weight percent of the main diffusion layer are as follows:
Water-soluble resin lotion 30%~80%
Light diffusion particle 10%~65%
Function additive 1%~10%；
Contain water soluble acrylic resin in the water-soluble resin lotion, water soluble acrylic resin's weight accounts for the water
The percentage of soluble resin lotion weight be 40%~70%, the smooth diffusion particle by different-grain diameter size big particle and granule
Sub-portfolio is constituted, and the big particle is one or both of polybutyl methacrylate, polyisobutyl methacrylate, big grain
Seed diameter is 30 μm~50 μm, and big particle weight accounts for the 10%~40% of light diffusion particle total weight percent；
The small particles are one or more of polymethyl methacrylate, polystyrene, organic silicon particle, the small particles
Particle diameter distribution at 0.5 μm~30 μm, small particles weight accounts for the 60%~90% of light diffusion particle total weight percent, the main expansion
Dissipate 1/2~3/4 that layer coating layer thickness is maximum particle diameter；
The small particles of the main diffusion coating are closely arranged in main diffusion layer surface with one or two layers, big particle be alternatively arranged in
In small particles.
2. anti scuffing diffusion barrier according to claim 1, which is characterized in that the function additive includes crosslinking agent, wetting
Dispersing agent.
3. anti scuffing diffusion barrier according to claim 2, which is characterized in that the crosslinking agent is hydrophilic aliphatic isocyanide
Acid esters or polyfunctionality aziridine resin.
4. anti scuffing diffusion barrier according to claim 3, which is characterized in that profit is added in the coating fluid of the main diffusion layer
Hygroscopic water powder, wetting dispersing agent dosage are the 0.5%~2% of total coating fluid quality.
5. anti scuffing diffusion barrier according to claim 4, which is characterized in that the transparent substrate, by poly terephthalic acid
One of glycol ester, polymethyl methacrylate, polycarbonate, polyamide, polyimides are made.
6. a kind of backlight module, including for luminous light source, reflector plate, light guide plate and frame, optical diffusion and prismatic lens,
It is characterized in that, the optical diffusion is the described in any item anti scuffing diffusion barriers of Claims 1 to 5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107272261A (en) * | 2017-07-28 | 2017-10-20 | 张家港康得新光电材料有限公司 | A kind of diffusion barrier and preparation method thereof |
| CN108319060A (en) * | 2017-12-26 | 2018-07-24 | 江西省平波电子有限公司 | A kind of highlighted liquid crystal display die set |
| CN108427153A (en) * | 2017-12-27 | 2018-08-21 | 深圳市长松科技有限公司 | A kind of optical diffusion film |
| CN108424691B (en) * | 2018-02-28 | 2020-05-05 | 合肥乐凯科技产业有限公司 | Water-based diffusion film coating |
| CN108508516A (en) | 2018-04-19 | 2018-09-07 | 京东方科技集团股份有限公司 | A kind of diffusion sheet and preparation method thereof, backlight module, display device |
| CN110416373B (en) * | 2019-07-10 | 2021-09-24 | 瑞识科技（深圳）有限公司 | LED light-emitting device emitting light from front side and manufacturing method thereof |
| CN113204064B (en) * | 2021-05-08 | 2023-11-07 | 广东湾区智能终端工业设计研究院有限公司 | Backlight film group, preparation method thereof and liquid crystal display device |
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