CN106646700B - A kind of reflectance coating and a kind of small size backlight module of small size backlight - Google Patents
A kind of reflectance coating and a kind of small size backlight module of small size backlight Download PDFInfo
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- CN106646700B CN106646700B CN201510719035.5A CN201510719035A CN106646700B CN 106646700 B CN106646700 B CN 106646700B CN 201510719035 A CN201510719035 A CN 201510719035A CN 106646700 B CN106646700 B CN 106646700B
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
- G02B5/0825—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only
- G02B5/0841—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only comprising organic materials, e.g. polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
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Abstract
The present invention relates to reflectance coating, in particular to the reflectance coating and a kind of small size backlight module of a kind of small size backlight.In order to realize the lightening target of small size backlight, the present invention provides a kind of reflectance coatings of small size backlight.The reflectance coating includes reflection film base material and white ink coating, and the white ink coating is coated in the one side of substrate.The hardness of the reflectance coating is high, stiffening property is good, reflectivity is high.
Description
Technical field
The present invention relates to reflectance coating, in particular to the reflectance coating and a kind of small size backlight mould of a kind of small size backlight
Group.
Background technique
Small size backlight module is mainly used in smart phone, Pad, car-mounted display etc., and size includes from 1.2 inches
To 10 inches etc., what these displays used is all LED LCD backlight.In recent years, with the development of mobile display, for small ruler
The lightening requirement of very little backlight is more and more obvious.And the lightening Main Trends of The Development for also becoming small size LED backlight.
Currently, small size backlight is lightening in the market mainly depends on LED and the thickness of LGP is more and more thinner.But LED it is frivolous for
Encapsulation technology it is more demanding, the cost is relatively high.And the thickness thinning of LGP near limit.Also occur in the market some
Way as directly given up small size back light module backboard, but in this way, reflectance coating directly exposes, for its stiffening property, anti scuffing
Requirement it is also higher, exposed reflectance coating may be scratched or because stiffening property deficiency directly influences the display of backlight.
Summary of the invention
In order to realize the lightening target of small size backlight, the present invention provides a kind of reflectance coating of small size backlight and
A kind of small size backlight module.The hardness of the reflectance coating is high, stiffening property is good, can improve because of reflectance coating out-of-flatness caused by picture it is bright
Spend non-uniform phenomenon.After the reflectance coating carries on the back coating white ink coating, the light for penetrating reflection film base material can be further reflected, is improved
The reflectivity of reflectance coating.
The invention further relates to a kind of small size backlight module for being applicable in such reflectance coating, the backlight module is without using traditional
The backboard of backlight module, have the advantages that it is lightening, and save backlight module processing procedure cost, simple process.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical solutions:
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
Above-mentioned reflectance coating has the one side of ink coating for the back side of reflectance coating, and the one side without ink coating is reflection
Face.
Further, the ink coating with a thickness of 5-25 μm.Ink coating thickness is preferably 15-25 μm.
The purpose of coating ink coating is to improve the hardness and stiffness of reflectance coating.When the reflectance coating is used in small size backlight mould
When in group (referred to as backlight), the backboard in backlight module can be saved, reduces the cost of backlight module, and reduces backlight
The thickness of mould group.
Small size backlight module refers to that catercorner length is less than or equal to 12.5 inches of backlight module.
Further, the substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The main layer includes 52-78% heat
Plastic resin, 12-20% incompatible with thermoplastic resin resin (abbreviation incompatible resin), 10-30% inorganic particulate；It is described
Auxiliary layer includes 90-95%PET, 1-2%SiO2Particle and 4-8% antistatic agent, the percentage are weight percentage.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=6-13:100.Further, A layers and B layers in the three-layer co-extruded structure of the ABA
Thickness ratio are as follows: A:B=6-10:100.
Further, the thickness range of the main layer is 50-400 μm.Further, the thickness range of the main layer is
100-200μm。
Further, the antistatic agent in the auxiliary layer is ethoxylated alkylamine.
Further, the thermoplastic resin is polyethylene terephthalate (PET), with thermoplastic resin not phase
The resin of appearance is polyolefin resin, and inorganic particulate is TiO 2 particles, and the average grain diameter of the TiO 2 particles is
0.1-1μm。
Further, the raw material of the reflection film base material main layer includes 52-78%PET, 12-20% polypropylene and 10-
30% TiO 2 particles；The raw material of the auxiliary layer includes 90-95%PET, 1-2%SiO2, 4-8% ethoxylated alkylamine.
After being mixed into incompatible resin and inorganic particulate in the thermoplastic resin, after biaxial tension, with incompatible tree
Rouge and inorganic particulate are karyomorphism into microvesicle.
Further, SiO in the auxiliary layer2The average grain diameter of particle is 0.2-0.4 μm.
Further, the main layer includes 70-78% thermoplastic resin, the 12-15% tree incompatible with thermoplastic resin
Rouge, 10-15% inorganic particulate；The auxiliary layer includes 93-94%PET, 2%SiO2Particle, 4-5% antistatic agent；The ink
Coating layer thickness is 15-25 μm.
Further, in the three-layer co-extruded structure of the ABA, A layers with B layers of thickness ratio are as follows: A:B=10:100.The master
The thickness range of layer is 100-200 μm.
Further, the raw material of the ink coating is ink, and the ink includes 30-50 parts of oligomer, monomer 40-60
Part, 5-8 parts of photoinitiator, 15-20 parts of pigment；The number is parts by weight.
Further, the ink includes 40-45 parts of oligomer, 45-50 parts of monomer, 6-7 parts of photoinitiator, pigment 16-
18 parts.
Further, the oligomer is selected from epoxy acrylic resin, polyester acrylate resin, urethane acrylate
One of or at least two composition.
Further, the monomer is selected from ethoxylation zinn glutaric alcohol double methacrylate, ethoxylated trimethylolpropane
Triacrylate, two contracting trimethylolpropane trimethacrylates, polyether tetra-acrylate, carbamate mono acrylic ester, phenol
One of ethoxy acrylate, glycerol propoxylate triacrylate or at least two composition.
Further, the photoinitiator is selected from the composition of one or both of benzophenone, benzil.
Further, the pigment is titanium dioxide.
The present invention also provides a kind of small size backlight module, the backlight module does not include backboard, the backlight module packet
Include reflectance coating of the present invention.
The present invention also provides the preparation method of the reflectance coating of the small size backlight described in one kind, the preparation method includes
Following steps:
(1) main layer of the substrate of reflectance coating and auxiliary layer raw materials are weighed by formula, are divided after drying, mixing device
Not Jing Guo double screw extruder melting mixing, main layer and auxiliary layer squeeze out jointly at the die head is cast to cooling slab on big cold drum,
Cold bulging temperature is 25-28 DEG C, after sheet is fully warmed-up, by longitudinal stretching, cross directional stretch, the thermal finalization at 220-240 DEG C,
Reflection film base material is formed at 60-70 DEG C after cooling；
(2) 5-25 μm of coating is formed in any one side after mixing ink composition by formula coated in substrate,
Winding obtains reflectance coating after UV solidifies.
Further, in above-mentioned steps (1), longitudinal stretching ratio is 3.5-4.0, and cross directional stretch ratio is 3.2-3.5.
It is had the following beneficial effects: by the reflectance coating of small size backlight obtained by the above method
1, in 5-25 μm of backside coating of white ink coating of the substrate of reflectance coating, the surface for effectively improving reflectance coating is hard
It spends, the backboard in alternative small size backlight module realizes the lightening of small size backlight.
2, after reflectance coating backside coating white ink coating, it can further reflect from reflection film base material and be perforated through
Light further increases the reflectivity of reflection film base material, obtains the reflectance coating of more high reflectance.
3, after reflectance coating backside coating ink coating, the stiffening property of reflectance coating is improved, and is avoided because of reflectance coating stiffening property
Deficiency, there is a phenomenon where diaphragm flexes to cause to show that picture is bad when in use.
Compared with prior art, after reflectance coating provided by the present invention coating white ink coating pencil hardness reach 2H,
3H or more, meanwhile, after coating white ink layer, stiffening property is improved, and alleviates reflectance coating suitable for backlight because of out-of-flatness
Caused brightness irregularities phenomenon.After the reflectance coating coats white ink layer coating, reflectivity is further improved.The present invention
Also provide this reflectance coating applicable small size backlight module, which eliminates back board structure, save backlight module
Cost, while realizing lightening target.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the reflectance coating of small size backlight provided by the invention.
Wherein, 1 for the substrate of reflectance coating main layer, 11 be the inorganic particulate in main layer, and 12 be the microvesicle in main layer, and 2 are
The auxiliary layer of the substrate of reflectance coating, 3 be the white ink coating at the back side.
Specific embodiment
It, hereafter will be of the invention preferable for the functional character and advantage that is more readily understood structure of the invention and can reach
Embodiment, and schema is cooperated to be described below in detail:
As shown in Figure 1, the reflectance coating of small size backlight provided by the invention includes the main layer 1 for reflecting film base material, main layer
In inorganic particulate 11, the microvesicle 12 in main layer reflects the auxiliary layer 2 of film base material, reflects the white ink coating 3 of back of the membrane.
The material and facility that the present invention uses is existing material and facility.
The reflectance coating of small size backlight provided by the invention detects properties using following methods.
1, the thickness of coating
Made S-4700 type electric field reflection-type scanning electron microscope is made using Hitachi, Japan, is seen with 500 times of multiplying power
The section of film is examined, finds out the thickness of coating to measure 5 points of average value.
2, light transmittance
According to the standard of GB/T 2410-2008, the UltraScan PRO superelevation produced using Hunterlab company, the U.S.
Precision profession spectrophotometric color measurement instrument passes through its transmitance of d/8 ° of structured testing of integrating sphere under D65 light conditions.Light transmittance is lower
Better.
3, reflectivity
According to the standard of GB/T 3979-2008, the UltraScan PRO superelevation produced using Hunterlab company, the U.S.
Precision profession spectrophotometric color measurement instrument passes through its reflectivity of d/8 ° of structured testing of integrating sphere, reflectivity data under D65 light conditions
It is 350nm-1050nm every the weighted average of the reflectivity of the light wave of 5nm wavelength, weight corresponds to the Energy distribution of D65 light source
Curve.
4, the coating surface hardness of reflectance coating
According to the standard of GB/T 6,739 1996, using the KXQ-17 of Chinese Dongguan City Ke Xing Instrument Ltd. production
The coating surface hardness of pencil hardness tester test reflectance coating.
5, the test of the stiffening property of reflectance coating
By membrane cutting at the print of 30cm × 5cm, diaphragm is placed on marble countertop by the mark position at 20cm,
20cm is stretched out, tests the top of diaphragm extension to marmorean horizontal distance.With enduring for this horizontal distance characterization reflectance coating
Property, horizontal distance is longer, shows that stiffening property is better.
Embodiment 1
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
The white ink coating with a thickness of 5 μm.
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The raw material of the main layer includes 75%PET, and 15%
Polypropylene and 10% TiO 2 particles.The raw material of the auxiliary layer includes 94%PET, 2%SiO2, 4% ethoxylated alkyl
Amine.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=10:100.The thickness of the main layer is 50 μm.
The average grain diameter of the TiO 2 particles is 0.2 μm.
SiO in the auxiliary layer2The average grain diameter of particle is 0.2 μm.
The raw material of the ink coating be ink, the ink include 40 parts of oligomer, 50 parts of monomer, 7 parts of photoinitiator,
18 parts of pigment；The number is parts by weight.
The oligomer is urethane acrylate.
The monomer is polyether tetra-acrylate.
The photoinitiator is benzophenone.
The pigment is titanium dioxide.
Embodiment 2
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
The white ink coating with a thickness of 15 μm.
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The raw material of the main layer includes 78%PET, and 12%
Polypropylene and 10% TiO 2 particles.The raw material of the auxiliary layer includes 93%PET, 2%SiO2, 5% ethoxylated alkyl
Amine.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=10:100.The thickness of the main layer is 150 μm.
The average grain diameter of the TiO 2 particles is 0.5 μm.
SiO in the auxiliary layer2The average grain diameter of particle is 0.2 μm.
The raw material of the ink coating be ink, the ink include 45 parts of oligomer, 45 parts of monomer, 6 parts of photoinitiator,
16 parts of pigment；The number is parts by weight.
The oligomer is urethane acrylate.
The monomer is polyether tetra-acrylate.
The photoinitiator is benzophenone.
The pigment is titanium dioxide.
Embodiment 3
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
The white ink coating with a thickness of 20 μm.
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The raw material of the main layer includes 75%PET, and 13%
Polypropylene and 12% TiO 2 particles.The raw material of the auxiliary layer includes 94%PET, 2%SiO2, 4% ethoxylated alkyl
Amine.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=10:100.The thickness of the main layer is 100 μm.
The average grain diameter of the TiO 2 particles is 0.5 μm.
SiO in the auxiliary layer2The average grain diameter of particle is 0.2 μm.
The raw material of the ink coating be ink, the ink include 43 parts of oligomer, 48 parts of monomer, 7 parts of photoinitiator,
17 parts of pigment；The number is parts by weight.
The oligomer is urethane acrylate.
The monomer is polyether tetra-acrylate.
The photoinitiator is benzophenone.
The pigment is titanium dioxide.
Embodiment 4
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
The white ink coating with a thickness of 25 μm.
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The raw material of the main layer includes 70%PET, and 15%
Polypropylene and 15% TiO 2 particles.The raw material of the auxiliary layer includes 93%PET, 2%SiO2, 5% ethoxylated alkyl
Amine.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=10:100.The thickness of the main layer is 200 μm.
The average grain diameter of the TiO 2 particles is 0.2 μm.
SiO in the auxiliary layer2The average grain diameter of particle is 0.2 μm.
The raw material of the ink coating be ink, the ink include 40 parts of oligomer, 50 parts of monomer, 7 parts of photoinitiator,
18 parts of pigment；The number is parts by weight.
The oligomer is urethane acrylate.
The monomer is polyether tetra-acrylate.
The photoinitiator is benzophenone.
The pigment is titanium dioxide.
The correlated performance of reflectance coating is evaluated, evaluation result is summarized in table 1.
Embodiment 5
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
The white ink coating with a thickness of 5 μm.
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The raw material of the main layer includes 52%PET, and 18%
Polypropylene and 30% TiO 2 particles.The raw material of the auxiliary layer includes 90%PET, 2%SiO2, 8% ethoxylated alkyl
Amine.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=6:100.The thickness of the main layer is 100 μm.
The average grain diameter of the TiO 2 particles is 0.1 μm.
SiO in the auxiliary layer2The average grain diameter of particle is 0.2 μm.
The raw material of the ink coating be ink, the ink include 30 parts of oligomer, 40 parts of monomer, 5 parts of photoinitiator,
15 parts of pigment；The number is parts by weight.
The oligomer is epoxy acrylic resin.
The monomer is two contracting trimethylolpropane trimethacrylates.
The photoinitiator is benzophenone.
The pigment is titanium dioxide.
Embodiment 6
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
The white ink coating with a thickness of 25 μm.
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The raw material of the main layer includes 78%PET, and 12%
Polypropylene and 10% TiO 2 particles.The raw material of the auxiliary layer includes 95%PET, 1%SiO2, 4% ethoxylated alkyl
Amine.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=13:100.The thickness of the main layer is 250 μm.
The average grain diameter of the TiO 2 particles is 1 μm.
SiO in the auxiliary layer2The average grain diameter of particle is 0.4 μm.
The raw material of the ink coating be ink, the ink include 50 parts of oligomer, 60 parts of monomer, 8 parts of photoinitiator,
20 parts of pigment；The number is parts by weight.
The oligomer is polyester acrylate resin.
The monomer is ethoxylation zinn glutaric alcohol double methacrylate.
The photoinitiator is benzil.
The pigment is titanium dioxide.
Embodiment 7
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
The white ink coating with a thickness of 15 μm.
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The raw material of the main layer includes 65%PET, and 15%
Polypropylene and 20% TiO 2 particles.The raw material of the auxiliary layer includes 92%PET, 1.5%SiO2, 5.5% ethoxylation alkane
Base amine.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=10:100.The thickness of the main layer is 150 μm.
The average grain diameter of the TiO 2 particles is 0.5 μm.
SiO in the auxiliary layer2The average grain diameter of particle is 0.3 μm.
The raw material of the ink coating be ink, the ink include 40 parts of oligomer, 50 parts of monomer, 7 parts of photoinitiator,
18 parts of pigment；The number is parts by weight.
The oligomer is urethane acrylate.
The monomer is polyether tetra-acrylate.
The photoinitiator is benzophenone.
The pigment is titanium dioxide.
Embodiment 8
The present invention provides a kind of reflectance coating of small size backlight, and the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate.
The white ink coating with a thickness of 20 μm.
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The raw material of the main layer includes 70%PET, and 20%
Polypropylene and 10% TiO 2 particles.The raw material of the auxiliary layer includes 93%PET, 2%SiO2, 5% ethoxylated alkyl
Amine.
The substrate is the three-layer co-extruded structure of ABA, and the main layer is B layers, and the auxiliary layer is A layers.The ABA is three-layer co-extruded
In structure A layers with B layers of thickness ratio are as follows: A:B=9:100.The thickness of the main layer is 180 μm.
The average grain diameter of the TiO 2 particles is 0.2 μm.
SiO in the auxiliary layer2The average grain diameter of particle is 0.2 μm.
The raw material of the ink coating be ink, the ink include 30 parts of oligomer, 60 parts of monomer, 6 parts of photoinitiator,
16 parts of pigment；The number is parts by weight.
The oligomer is the composition of epoxy acrylic resin and polyester acrylate resin, and the weight ratio of the two is 1:
1。
The monomer is the group of ethoxylation zinn glutaric alcohol double methacrylate and two contracting trimethylolpropane trimethacrylates
Object is closed, the weight ratio of the two is 1:1.
The photoinitiator is the composition of benzophenone and benzil, and the weight ratio of the two is 1:1.
The pigment is titanium dioxide.
Comparative example 1
In reflection film base material as described in Example 1, it is not coated with ink layer, using this reflection plate substrate as final small ruler
Reflectance coating of the very little backlight without module backboard.
The correlated performance of reflectance coating is evaluated, evaluation result is summarized in table 1.
The performance detection data for the reflectance coating that 1 embodiment and comparative example of table provides
According to data in table 1, it can be concluded that, the reflectance coating of small size backlight provided by the invention has excellent reflection
Rate, surface hardness is preferable, can substitute the backboard of small size backlight module, realizes the lightening target of small size backlight.Instead
Piece is penetrated after coating white ink layer, stiffening property has significantly improved.Particularly, the reflectance coating that embodiment 2-4 is provided
Reflectivity is higher (being greater than or equal to 98.6%), and light transmittance is lower (being less than or equal to 0.5), and stiffening property is good (being greater than or equal to 8.9),
Hardness is higher (reaching 3H), and comprehensive performance is preferable.The reflectivity highest for the reflectance coating that embodiment 4 provides, light transmittance is extremely low, stiffening property
Good, hardness is higher, and comprehensive performance is best.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
The equivalent changes and modifications that content is done according to the present invention are encompassed by the scope of the patents of the invention.
Claims (9)
1. a kind of reflectance coating of small size backlight, which is characterized in that the reflectance coating includes reflection film base material and white ink
Coating, the white ink coating are coated in the one side of substrate；
The substrate includes main layer and the auxiliary layer that main layer two sides are arranged in；The main layer include 52-78% thermoplastic resin,
The inorganic particulate of the resin and 10-30% incompatible with thermoplastic resin of 12-20%；The auxiliary layer includes 90-95%PET,
1-2%SiO2Particle and 4-8% antistatic agent, the percentage are weight percentage；
The reflectance coating has the one side of ink coating for the back side of reflectance coating, and the one side without ink coating is reflecting surface.
2. reflectance coating as described in claim 1, which is characterized in that the thermoplastic resin is polyethylene terephthalate
Ester, the resin incompatible with thermoplastic resin are polyolefin resin, and inorganic particulate is TiO 2 particles, the titanium dioxide
The average grain diameter of particle is 0.1-1 μm.
3. reflectance coating as described in claim 1, which is characterized in that the raw material of the reflection film base material main layer includes 52-78%
PET, 12-20% polypropylene and 10-30% TiO 2 particles；The raw material of the auxiliary layer includes 90-95%PET, 1-2%
SiO2And 4-8% ethoxylated alkylamine.
4. reflectance coating as described in claim 1, which is characterized in that the main layer includes the thermoplastic resin of 70-78%, 12-
15% resin incompatible with thermoplastic resin and 10-15% inorganic particulate；The auxiliary layer includes 93-94%PET, 2%SiO2
Particle and 4-5% antistatic agent；The ink coating is with a thickness of 15-25 μm.
5. reflectance coating as described in claim 1, which is characterized in that the raw material of the ink coating is ink, the ink packet
Include 30-50 parts of oligomer, 40-60 parts of monomer, 5-8 parts of photoinitiator and 15-20 parts of pigment；The number is parts by weight.
6. reflectance coating as claimed in claim 5, which is characterized in that the ink includes 40-45 parts of oligomer, monomer 45-50
Part, 6-7 parts of photoinitiator and 16-18 parts of pigment.
7. reflectance coating as claimed in claim 6, which is characterized in that the monomer is selected from the double acrylic acid of ethoxylation zinn glutaric alcohol
Ester, ethoxylated trimethylolpropane triacrylate, two contracting trimethylolpropane trimethacrylates, polyether tetra-acrylate,
One of carbamate mono acrylic ester, phenol ethoxy acrylate, glycerol propoxylate triacrylate or at least two
Composition.
8. a kind of small size backlight module, which is characterized in that the backlight module does not include backboard, and the backlight module includes power
Benefit require 1 described in reflectance coating.
9. a kind of preparation method of the reflectance coating of small size backlight according to claim 1, which is characterized in that the system
Preparation Method includes the following steps:
(1) main layer of the substrate of reflectance coating and auxiliary layer raw materials are weighed by formula, are passed through respectively after drying, mixing device
Double screw extruder melting mixing is crossed, main layer and auxiliary layer squeeze out jointly at die head is cast to cooling slab, cold drum on big cold drum
Temperature is 25-28 DEG C, after sheet is fully warmed-up, by longitudinal stretching, cross directional stretch, the thermal finalization at 220-240 DEG C, 60-
Reflection film base material is formed at 70 DEG C after cooling；
(2) ink composition is passed through by the coating for forming 5-25 μm in any one side of substrate is coated in after formula mixing
Winding obtains reflectance coating after UV solidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719035.5A CN106646700B (en) | 2015-10-29 | 2015-10-29 | A kind of reflectance coating and a kind of small size backlight module of small size backlight |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719035.5A CN106646700B (en) | 2015-10-29 | 2015-10-29 | A kind of reflectance coating and a kind of small size backlight module of small size backlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106646700A CN106646700A (en) | 2017-05-10 |
| CN106646700B true CN106646700B (en) | 2019-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510719035.5A Active CN106646700B (en) | 2015-10-29 | 2015-10-29 | A kind of reflectance coating and a kind of small size backlight module of small size backlight |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814187B (en) * | 2019-03-22 | 2020-11-10 | 宁波东旭成新材料科技有限公司 | Optical reflection film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409161A (en) * | 2001-09-19 | 2003-04-09 | 惠和株式会社 | Reflective thin sheet and back light assembly using said sheet |
| CN1755401A (en) * | 2004-10-01 | 2006-04-05 | 三星电子株式会社 | Blooming, have the backlight assembly of this film and have the display device of this film |
| CN102118916A (en) * | 2009-12-30 | 2011-07-06 | 昆山雅森电子材料科技有限公司 | Heat-conducting covering film |
| CN102418853A (en) * | 2010-09-28 | 2012-04-18 | 展晶科技(深圳)有限公司 | Light-emitting device and manufacturing method thereof |
-
2015
- 2015-10-29 CN CN201510719035.5A patent/CN106646700B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409161A (en) * | 2001-09-19 | 2003-04-09 | 惠和株式会社 | Reflective thin sheet and back light assembly using said sheet |
| CN1755401A (en) * | 2004-10-01 | 2006-04-05 | 三星电子株式会社 | Blooming, have the backlight assembly of this film and have the display device of this film |
| CN102118916A (en) * | 2009-12-30 | 2011-07-06 | 昆山雅森电子材料科技有限公司 | Heat-conducting covering film |
| CN102418853A (en) * | 2010-09-28 | 2012-04-18 | 展晶科技(深圳)有限公司 | Light-emitting device and manufacturing method thereof |
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| Publication number | Publication date |
|---|---|
| CN106646700A (en) | 2017-05-10 |
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Application publication date: 20170510 Assignee: Ningbo Changlong New Material Co.,Ltd. Assignor: NINGBO SOLARTRON TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000199 Denomination of invention: The utility model relates to a reflective film for small-size backlight and a small-size backlight module Granted publication date: 20190226 License type: Common License Record date: 20210831 |