CN108761591A - A kind of application type reflectance coating for side entrance back module - Google Patents
A kind of application type reflectance coating for side entrance back module Download PDFInfo
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- CN108761591A CN108761591A CN201810495964.6A CN201810495964A CN108761591A CN 108761591 A CN108761591 A CN 108761591A CN 201810495964 A CN201810495964 A CN 201810495964A CN 108761591 A CN108761591 A CN 108761591A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
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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
- G02F1/133605—Direct backlight including specially adapted reflectors
Abstract
The invention belongs to polyester film technical fields, more particularly to a kind of application type reflectance coating for side entrance back module, coating layer including reflection membrane body and coated in reflection membrane body side, coating layer includes resin glue and coated particle, the coated particle using inorganic particulate as core, using polystyrene resin as clad；The coated particle includes big grain size coated particle and small particle coated particle, and the grain size of the big grain size coated particle is 15~20 μm, and the grain size of the small particle coated particle is 3~8 μm；The thickness of the clad is 3~5 μm；Coated particle provided by the invention includes the structure that stiff differential equations are core, polystyrene resin is clad, the stiff differential equations of internal layer provide effective the problem of supporting and preventing crimp, to effectively prevent scratch problem of traditional application type reflectance coating to light guide plate；The polystyrene resin is as clad, and the material is soft, can effectively avoid the scratch to light guide plate.
Description
Technical field
The invention belongs to polyester film technical fields, and in particular to a kind of application type for side entrance back module reflects
Film.
Background technology
Reflectance coating is one of most important optical film, main function in the backlight module for be widely used in liquid crystal display
It is to emit the light that light source is sent out to the light direction of backlight module, improves light utilization, reduce light loss, carried with reaching
High backlight module brightness, reduces the purpose of power consumption.Backlight module is divided into side entrance back according to the arrangement of light source
Module and down straight aphototropism mode set；It needs to be applied to light guide plate in side entrance back module, point light source is converted into area source,
At the beginning of design, uncoated conventional reflector film can be adsorbed on light guide plate, generate the bad phenomenons such as shadow.For this purpose, research people
Member starts the problem of the surface of reflectance coating coating layer of substance avoids the occurrence of absorption, and still, the use of coated particle is said very much
Study carefully, if if coated particle is really up to the mark, in the assembling process of backlight module, light guide plate can be scraped off so that the backlight lighted
There is dotted, linear bright spot phenomenon in module, this is never to allow to occur for backlight module；Also, it is this bad
Phenomenon can also become tight with the carrying of backlight module finished product during being transported from maquila to display complete machine assembly plant
Weight；And coated particle is excessively soft, buckle fixed position active force is excessive under the gravity of light guide plate and in assembling process,
There is local hickie phenomenon after leading to backlight lightening, i.e., " the pushing up white defect " known in backlight industry.In this way, application type reflects
There are anti scuffing, a variety of demands of anti-absorption and anti-top in vain for application of the film in side entrance back module, and ensure application type
Reflectance coating is in the holding or raising using rear brightness, and the sedimentation because of particle in coating process is avoided to cause film surface exception etc.
Factor is all application type reflectance coating factor needed to be considered in process of production.
Currently, major optical film manufacturing enterprise is all in the exploitation for being coated type optical film of racking one's brains；Such as patent application
Number disclose a kind of anti scuffing optical reflectance coating and preparation method thereof, core for the Chinese patent of " CN201310002940.X "
Technology while is adjusted flexible particle and using big grain size by the reflection flexible particle of film surface coating and non-flexible particle, non-
Flexible particle meets the white purpose in the anti-top of anti scuffing simultaneously by the way of small particle, still, this to use painting of different nature
Cloth particle, the dispersion performance in coating fluid is different from non-flexible particle for such as flexible particle, the phenomenon that be easy to causeing layering, is being coated with
It is easy to cause the situation of film surface exception in the process, it is more demanding to coating operations, virtually so that processing cost rises.
Invention content
For the problems of the prior art, the purpose of the present invention is to provide a kind of coatings for side entrance back module
Type reflectance coating, it is ensured that while reflectance coating anti-absorption, have the effect of that the anti-top of excellent anti scuffing is white, and with preferable production
Exploitativeness.
To achieve the goals above, the present invention is achieved by the following scheme：
A kind of application type reflectance coating for side entrance back module, including reflect membrane body and be coated in reflection membrane body
The coating layer of side, coating layer include resin glue and coated particle, the coated particle using inorganic particulate as core, with polyphenyl
Vinyl is as clad；
The coated particle includes big grain size coated particle and small particle coated particle, the grain of the big grain size coated particle
Diameter is 15~20 μm, and the grain size of the small particle coated particle is 3~8 μm；
The thickness of the clad is 3~5 μm.
In the present invention, by coating the resin glue containing coated particle, the coated particle on reflection membrane body
Be by rigid, hard inorganic particulate be core, using polystyrene resin as clad；This is provided with the reflectance coating energy of coating layer
The enough absorption effectively prevented between reflectance coating and light guide plate, to prevent the absorption of reflectance coating from generating the bad phenomenon of shadow；
In addition, the polystyrene resin of the coated particle outer cladding can preferably avoid scratching light guide plate, avoid in backlight mould
Phenomena such as rubbing wound, scratch of light guide plate is caused in the assembling process of group；Importantly, rigidity possessed by the coated particle is hard
The core of matter inorganic particulate, in the extruding reflectance coating of light guide plate, excessive deformation can't occur for the coated particle of coating layer,
Effectively prevent the generation for pushing up white phenomenon.
According to the present invention, the usage amount of heretofore described coated particle can select in a wider scope, still, apply
Cloth particle additive amount is excessive, and directly unfavorable is exactly the raising for causing production cost, and excessive coated particle is deposited in reflection
On membrane body, reflection light is blinded by cause the reduction of reflectivity；And coated particle additive amount is very few, causes to dash forward on coating
The reduction for going out number of particles easy tos produce local absorption when light guide plate is expressed to reflectance coating and causes showing for hickie
As；In the present invention, the coated particle accounts for the 3~15% of coating layer weight, wherein the big grain size coated particle and small particle
The mass ratio of coated particle is 1：(3.8~5.5).The height that hierarchy is generated by the collocation of large and small grain size coated particle is prominent
Go out configuration, i.e., large-sized coated particle height outstanding is more, and the coated particle of small particle height outstanding is few, to compared with
Anti- absorption, the white purpose in anti-top can be realized in few coated particle sum.
Further, in the present invention, the coated particle accounts for the 5~10% of coating layer weight, wherein the big grain size applies
The mass ratio of cloth particle and small particle coated particle is 1：(4.5~5).
In the present invention, the inorganic particulate is Al2O3Particle, SiO2Particle, TiO2Particle, BaSO4Particle, CaCO3Particle
In one kind or at least two combination；
The grain size of the inorganic particulate is 1~15 μm.
Polystyrene resin is coated on to the surface of inorganic particles, it is stiff differential equations to be formed internal, and outside is
The nucleocapsid of polystyrene resin.
The preparation method of the coated particle is：
(1) inorganic particulate is distributed in the deionized water of 4~5 times of its weight, is subsequently added into hexamethylene, n-butanol and hard
Glycerol stirs to get reverse micro emulsion；In the reverse micro emulsion, hexamethylene, n-butanol, tristerin
Additive amount is that the hexamethylene of 200~250mL, 100mL n-butanols and 10~12g are added in the dispersion liquid per 100g inorganic particulates
Tristerin；
(2) styrene monomer and initiator are added in the reverse micro emulsion obtained in step (1), then 60~100
1~4h of back flow reaction at a temperature of DEG C is filtered after cooling and sediment is washed with deionized 2~3 times, then existed
Drying can be obtained the inorganic particulate of polystyrene cladding under vacuum condition.
The initiator is potassium peroxydisulfate or ammonium persulfate；
In step (2), the vacuum condition is that vacuum degree is 0.35~0.45Mpa, and drying temperature is 40~45 DEG C.
In the present invention, the resin glue is one kind or combinations thereof in acrylic resin glue, polyurethane resin glue.
In the preparation process of the application type reflectance coating, by coated particle, resin glue and organic solvent with liquid
It is mixed in cylinder, the speed of dispersion impeller is 800~1000r/min, and mixing time is 15~30min, then leads to coating fluid
The surface that anilox roll is coated on reflectance coating is crossed, and by 100~120 DEG C of baking oven drying reflection film surface so that coating solution is hard
Change forms coating layer, obtains the application type reflectance coating.
Further, in the present invention, the thickness of the coating layer is 10~20 μm；Herein it is noted that, the coating
The thickness of layer refers to the thickness of coating layer dry film, also, the thickness of the coating layer refers to that resin glue solidification is formed
Film thickness.The thickness of coating is excessively thin, then is easy to cause the exposure of a large amount of coated particles, and be easy to cause that particle falls off asks
Topic；And the thickness of coating is blocked up, the not only loss of light easy to increase, can also cause the rising of production cost.
Compared with prior art, the present invention has the following technical effects：
Application type reflectance coating provided by the invention, by the way that different-grain diameter but kin coating grain are arranged in coating fluid
Son, avoids existing flexible particle and non-flexible particle disperses the situation of film surface exception caused by unevenness in coating fluid；
Coated particle provided by the invention includes the knot that stiff differential equations are core, polystyrene resin is clad
The stiff differential equations of structure, internal layer provide effective the problem of supporting and preventing crimp, are passed to effectively prevent
Scratch problem of the application type reflectance coating of system to light guide plate；The polystyrene resin is as clad, and the material is soft, energy
Enough scratches effectively avoided to light guide plate.
Application type reflectance coating provided by the invention, for the light guide plate material of various material existing in the prior art, such as
The harder PMMA materials light guide plate of material all has extraordinary adaptability to the MS light guide plates that the material is soft.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is furture elucidated.
In order in the existing side entrance back module of effective solution, anti-absorption, anti scuffing between light guide plate and reflectance coating
And the anti-white technology requirement in top, the present invention provides a kind of application type reflectance coatings for side entrance back module, including reflect
Membrane body and coating layer coated in reflection membrane body side, coating layer includes resin glue and coated particle, the coating
Particle using inorganic particulate as core, using polystyrene resin as clad；
The coated particle includes big grain size coated particle and small particle coated particle, the grain of the big grain size coated particle
Diameter is 15~20 μm, and the grain size of the small particle coated particle is 3~8 μm；
The thickness of the clad is 3~5 μm.
The preparation method of the coated particle is：
(1) inorganic particulate is distributed in the deionized water of 4~5 times of its weight, is subsequently added into hexamethylene, n-butanol and hard
Glycerol stirs to get reverse micro emulsion；In the reverse micro emulsion, hexamethylene, n-butanol, tristerin
Additive amount is to be added in the dispersion liquid per 100g inorganic particulates
The hexamethylene of 200~250mL, 100mL n-butanols and 10~12g tristerins；
(2) styrene monomer and initiator are added in the reverse micro emulsion obtained in step (1), then 60~100
1~4h of back flow reaction at a temperature of DEG C is filtered after cooling and sediment is washed with deionized 2~3 times, then existed
Drying can be obtained the inorganic particulate of polystyrene cladding under vacuum condition.
The initiator is potassium peroxydisulfate or ammonium persulfate；
In step (2), the vacuum condition is that vacuum degree is 0.35~0.45Mpa, and drying temperature is 40~45 DEG C.
The advantages of application type reflectance coating provided by the invention, is made further instructions below by way of specific embodiment.
Application type reflectance coating provided by the invention detects properties using following methods.
1, coating layer thickness
Made S-4700 type electric field reflection-type scanning electron microscope is made using Hitachi, Japan, with 500 times of multiplying power
The section for observing film finds out the coating layer thickness of reflectance coating to measure 5 points of average value.
2, backlight module brightness (also referred to as briliancy)
Application type reflectance coating will be prepared in embodiment to be placed in 15.6 cun of backlight modules, by shining for backlight unit
Face is divided into 9 regions of 3*3, and the front face brightness using Fu Shida BM-7A luminance meters for lighting 5min or more is tested, and measures
Angle is 1 °, and luminance meter is 50cm with backlight module light-emitting surface at a distance from, with 9 regions in the face area of backlight module light-emitting surface
Brightness of the arithmetic mean of instantaneous value of brightness as backlight module, the brightness value that measures is higher to illustrate brighter display.
In the test of the present invention, using the brightness value of uncoated reflectance coating as 100%.
3, anti-scratch aptitude tests
Multi-ply paper or hard object simulation backlight module bottom backboard are pasted on marble countertop, and reflectance coating is placed on table top,
The light guide plate of ink printing is covered on reflectance coating.It is placed on above light guide plate with the weight of load 3kg, fixes weight with adhesive tape and lead
Tabula rasa keeps reflectance coating motionless, pulls weight back and forth in transverse direction 10 times.The ink site of light guide plate is observed, is pressed
The scratch situation of light guide plate is evaluated according to following standards.Zero, △ has practical performance.
○：The ink site of light guide plate is almost without being scraped
△：The ink site of light guide plate has to be scraped on a small quantity
×：The ink site of light guide plate is almost scraped
In above-mentioned experiment, tested respectively with widely used PMMA materials light guide plate and MS material light guide plates.
4, anti-adsorption capacity test
Each reflectance coating obtained in embodiment is positioned in backlight module, watches whether overall picture has because of leaded light after lighting
The bad appearance phenomenon for the shadow that plate is generated with reflectance coating absorption.It is evaluated according to following standards confrontation adsorption capacity.
Lev.0：Indicate that appearance is good, unshadowed phenomenon；
Lev.1：A small amount of shadow is indicated, at not more than 3；
Lev.2：Indicate that shadow is more, at extra 3.
5, the anti-white aptitude tests in top
The reflectance coating being prepared in embodiment is put into backlight module, observation is at the reinforcing rib of backboard pair after lighting
Whether there is hickie phenomenon on the backlight luminescence face answered, the observation is without placing diffusion barrier and brightness enhancement film, it is only necessary to place light guide plate i.e.
Observable.White ability is pushed up according to the confrontation of following standard to be evaluated.Wherein Lev.0, Lev.1 have practicability
Lev.0：Observation is without hickie phenomenon above light guide plate；
Lev.1：Observation above catheter plate has slight dotted hickie phenomenon；
Lev.2：Observation has a more serious hickie phenomenon above light guide plate, and the extending direction of hickie and the reinforcing rib of backboard prolong
It is consistent to stretch direction.
The DJX series that the ningbo of china Chang Yang Science and Technology Co., Ltd. that membrane body uses provides is reflected in following embodiment
Reflectance coating, the specific trade mark is DJX-188 (thickness is 188 μm), (thickness is by DJX-225 (thickness is 225 μm), DJX-300
300μm)。
Embodiment 1
A kind of application type reflectance coating for side entrance back module, preparation method are：
S1：It is 5 μm of SiO to take grain size2Powder (being purchased from Shandong Li Hua new materials Co., Ltd trade mark XR-101), grain size are
15 μm of SiO2Powder (being purchased from Li Yuan new materials Science and Technology Ltd. of Zaozhuang City trade mark L-201) is distributed in deionized water, is connect
Addition hexamethylene, n-butanol and tristerin, reverse micro emulsion is stirred to get；
Hexamethylene, n-butanol, tristerin additive amount be to be added in the dispersion liquid per 100g inorganic particulates
The hexamethylene of 200mL, 100mL n-butanols and 10g tristerins；
S2：Styrene monomer and initiator potassium persulfate are added in the reverse micro emulsion obtained in step sl, then exists
Back flow reaction 3h at a temperature of 80 DEG C is filtered after cooling and sediment is washed with deionized 2 times, then in vacuum
Degree is 0.40Mpa, and the inorganic particulate that can be obtained polystyrene cladding is dried under the vacuum condition that drying temperature is 45 DEG C；
S3：The coated particle being prepared in step S2, resin glue and organic solvent are mixed in fluid cylinder,
The speed of dispersion impeller is 9000r/min, then coating fluid is coated on reflectance coating by mixing time 30min by anilox roll
Surface, and by 110 DEG C of baking oven drying reflection film surface so that coating solution hardens to form coating layer, obtains the painting
Cloth type reflectance coating；
Wherein, it is 8% that coated particle, which accounts for coating layer weight,；The matter of big the grain size coated particle and small particle coated particle
Amount is than being 1：4.5；0.5g levelling agents BYK-354,0.05g DISPERBYK-2025 dispersants are additionally added in per 10L coating fluids,
3g antifoaming agent BYK-072；
The resin glue is that acrylic resin glue and polyurethane glue press 2：1 weight ratio compatibility forms；
The reflectance coating uses the DJX-188 reflectance coatings purchased from Ningbo length sun science and technology production；
In coating process, control coating layer thickness is 15 μm.
Embodiment 2
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, it is 5% that coated particle, which accounts for coating layer weight,；The big grain size coated particle and small particle coated particle
Mass ratio is 1：4.5；Remaining is constant, and the application type reflectance coating is prepared.
Embodiment 3
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, it is 10% that coated particle, which accounts for coating layer weight,；The big grain size coated particle and small particle coated particle
Mass ratio be 1：4.5；Remaining is constant, and the application type reflectance coating is prepared.
Embodiment 4
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, it is 3% that coated particle, which accounts for coating layer weight,；The big grain size coated particle and small particle coated particle
Mass ratio is 1：4.5；Remaining is constant, and the application type reflectance coating is prepared.
Embodiment 5
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, it is 15% that coated particle, which accounts for coating layer weight,；The big grain size coated particle and small particle coated particle
Mass ratio be 1：4.5；Remaining is constant, and the application type reflectance coating is prepared.
Embodiment 6
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, the mass ratio of the big grain size coated particle and small particle coated particle is 1：5；Remaining is constant, prepares
Obtain the application type reflectance coating.
Embodiment 7
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, the mass ratio of the big grain size coated particle and small particle coated particle is 1：3.8；Remaining is constant, system
It is standby to obtain the application type reflectance coating.
Embodiment 8
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, the mass ratio of the big grain size coated particle and small particle coated particle is 1：5.5；Remaining is constant, system
It is standby to obtain the application type reflectance coating.
Embodiment 9
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process, control coating layer thickness is 10 μm.
Embodiment 10
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process, control coating layer thickness is 20 μm.
Embodiment 11
The present embodiment is by 5 μm in embodiment 1 of SiO2Powder is changed to 5 μm of Al2O3Micro mist, by 15 μm of SiO2Powder
End is changed to 15 μm of Al2O3Micro mist, remaining is constant, and the application type reflectance coating is prepared.
Comparative example 1
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, it is 1% that coated particle, which accounts for coating layer weight,；The big grain size coated particle and small particle coated particle
Mass ratio is 1：4.5；Remaining is constant, and the application type reflectance coating is prepared.
Comparative example 2
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, it is 20% that coated particle, which accounts for coating layer weight,；The big grain size coated particle and small particle coated particle
Mass ratio be 1：4.5；Remaining is constant, and the application type reflectance coating is prepared.
Comparative example 3
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, the mass ratio of the big grain size coated particle and small particle coated particle is 1：2；Remaining is constant, prepares
Obtain the application type reflectance coating.
Comparative example 4
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process for preparation of liquid, the mass ratio of the big grain size coated particle and small particle coated particle is 1：6；Remaining is constant, prepares
Obtain the application type reflectance coating.
Comparative example 5
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process, control coating layer thickness is 8 μm.
Comparative example 6
The preparation method of the present embodiment and application type reflectance coating described in embodiment 1 is essentially identical, unlike, it is being coated with
In the process, control coating layer thickness is 30 μm.
The correlated performance for the application type reflectance coating that test the various embodiments described above are prepared, and table is recorded in test result
In 1.
Table 1：
It can be illustrated by the testing result of table 1, application type reflectance coating provided by the invention can effectively avoid being applied to
Absorption problem in side entrance back module, and can avoid scratch light guide plate, and leads to the problem of push up it is white.Particularly, originally
The briliancy for reflecting membrane body can also be had the promotion of about 2 points by inventing the application type reflectance coating provided.
The basic principles and main features and the features of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (6)
1. a kind of application type reflectance coating for side entrance back module, including reflect membrane body and be coated in reflection membrane body one
The coating layer of side, it is characterised in that：Coating layer includes resin glue and coated particle, and the coated particle is with inorganic particulate
Core, using polystyrene resin as clad；
The coated particle includes big grain size coated particle and small particle coated particle, and the grain size of the big grain size coated particle is
15~20 μm, the grain size of the small particle coated particle is 3~8 μm；
The thickness of the clad is 3~5 μm.
2. the application type reflectance coating according to claim 1 for side entrance back module, which is characterized in that the coating
Particle accounts for the 3~15% of coating layer weight, wherein the mass ratio of the big grain size coated particle and small particle coated particle is 1：
(3.8~5.5).
3. the application type reflectance coating according to claim 1 for side entrance back module, which is characterized in that the coating
Particle accounts for the 5~10% of coating layer weight, wherein the mass ratio of the big grain size coated particle and small particle coated particle is 1：
(4.5~5).
4. the application type reflectance coating according to claim 1 for side entrance back module, which is characterized in that described inorganic
Particle is Al2O3Particle, SiO2Particle, TiO2Particle, BaSO4Particle, CaCO3One kind in particle or at least two combination；
The grain size of the inorganic particulate is 1~15 μm.
5. the application type reflectance coating according to claim 1 for side entrance back module, which is characterized in that the resin
Glue is one kind or combinations thereof in acrylic resin glue, polyurethane resin glue.
6. the application type reflectance coating according to claim 1 for side entrance back module, which is characterized in that the coating
The thickness of layer is 10~20 μm.
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| CN201810495964.6A CN108761591B (en) | 2018-05-22 | 2018-05-22 | Coating type reflecting film for side-entry backlight module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810495964.6A CN108761591B (en) | 2018-05-22 | 2018-05-22 | Coating type reflecting film for side-entry backlight module |
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| CN108761591B CN108761591B (en) | 2021-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112297569A (en) * | 2019-08-02 | 2021-02-02 | 仪化东丽聚酯薄膜有限公司 | Optical-grade polyester film with good roll appearance |
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| CN108761591B (en) | 2021-08-24 |
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