CN109870753A - A kind of dirty silver-colored reflectance coating of the anti-finger of super bright high reliability - Google Patents
A kind of dirty silver-colored reflectance coating of the anti-finger of super bright high reliability Download PDFInfo
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- CN109870753A CN109870753A CN201811567640.5A CN201811567640A CN109870753A CN 109870753 A CN109870753 A CN 109870753A CN 201811567640 A CN201811567640 A CN 201811567640A CN 109870753 A CN109870753 A CN 109870753A
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Abstract
The present invention relates to the reflective film material technical fields of backlight LCD, and in particular to a kind of super bright dirty silver-colored reflectance coating of the anti-finger of reliability.In order to solve the problems, such as that warpage is serious after existing silver-colored reflectance coating reliability, the present invention provides a kind of dirty silver-colored reflectance coating of the anti-finger of super bright high reliability.The reflectance coating successively includes hardening coat, the first priming coat, the first protection against oxidation layer, Ag layers, transition zone, substrate layer, metal layer, the second protection against oxidation layer, the second priming coat and functional layer.Reflectance coating provided by the invention is prepared using individual substrate, and warpage is serious after solving the problems, such as finished product reliability.Silver-colored reflectance coating provided by the invention simultaneously has the reflectivity of superelevation.
Description
Technical field
The present invention relates to the reflective film material technical fields of backlight LCD, while being also covered by the neck for needing similar reflectance coating
Domain is specifically related to a kind of dirty silver-colored reflectance coating of the anti-finger of super bright reliability.
Background technique
LCD sheet needs to show image using backlight as non-luminescent property display technology device.The hair of backlight module
Exhibition has played the development of display vital.Future, liquid crystal display will be carried out towards the mode of ultrathin
Development, correspondingly, backlight module similarly towards light, thin, low-power consumption, high brightness, low cost on developed.
Backlight module is mainly assembled by LED light source, lampshade, reflectance coating, light guide plate, diffusion barrier, brightness enhancement film and outline border etc.
It forms.Wherein, the main function of reflectance coating is will to leak out the light high efficiency of light guide plate bottom and reflect without loss, to drop
Low optical loss damage, reduces electricity consumption, improves the light saturation degree of liquid crystal display.Therefore, the reflectivity of reflectance coating is improved, i.e. assembling brightness
Degree reduces the thickness of reflectance coating, the warpage after reducing reflectance coating reliability, and the assembling yield for improving reflectance coating becomes following important
Research topic.
Silver reflectance coating used at present, the ESR material compared to 3M, low 2% or so on reflectivity, in addition to this, silver is anti-
It penetrates film and belongs to and prepared using compound technique, the shrinking percentage difference of two layers of substrate layer will largely will affect silver
Warpage after reflectance coating reliability.Meanwhile as the following machine will be developed towards slimming, existing silver reflection on the market
Film thickness is in the majority with 80 or 75 μm, subsequent to will be unable to meet the needs of most of client.Therefore, it prepares a kind of super bright highly reliable
Property anti-finger dirty silver-colored reflectance coating there are its necessity.
Summary of the invention
In order to solve the problems, such as that warpage is serious after existing silver-colored reflectance coating reliability, the present invention provides a kind of super bright highly reliable
Property the dirty silver-colored reflectance coating of anti-finger.Reflectance coating provided by the invention is prepared using individual substrate, and warpage is tight after solving finished product reliability
The problem of weight.Silver-colored reflectance coating provided by the invention simultaneously has the reflectivity of superelevation, solves existing silver-colored reflectance coating reflectivity phase
To low, the problem of lacking competitive advantage；In addition, reflection film surface provided by the invention has high rigidity, excellent wearability, excellent
Different soil resistance solves existing high silver lustre reflectance coating and is easily scratched by light guide plate, causes silver layer to be oxidized, to cause backlight
Luminance reduces even completely black problem.
In order to solve the above technical problem, the present invention provides following technical solutions:
The present invention provides a kind of silver-colored reflectance coating, and the reflectance coating successively includes the first protection against oxidation layer, Ag layers, substrate
Layer, metal layer, the second protection against oxidation layer.
One of inventive point of the invention is to be provided with metal layer in the other side of substrate layer to utilize gold during the preparation process
Belong to layer and protect Ag layers of not oxidized, the reflectivity of Ag layers of holding, increases the process time of semi-finished product coating protection against oxidation layer.
Further, the reflectance coating successively includes the first protection against oxidation layer, Ag layers, transition zone, substrate layer, metal
Layer, the second protection against oxidation layer.
Further, the reflectance coating successively include the first hardening coat, the first protection against oxidation layer, Ag layers, transition zone,
Substrate layer, metal layer, the second protection against oxidation layer.
Further, the reflectance coating successively include the first hardening coat, the first protection against oxidation layer, Ag layers, transition zone,
Substrate layer, metal layer, the second protection against oxidation layer, functional layer.
The present invention provides a kind of reflectance coating, and the reflectance coating successively includes hardening coat, the first priming coat, first anti-oxidation
Protective layer, Ag layers, transition zone, substrate layer, metal layer, the second protection against oxidation layer, the second priming coat and functional layer.
The reflectance coating is also known as the dirty silver-colored reflectance coating of the anti-finger of super bright high reliability.
The reflectance coating by hardening coat, the first priming coat, the first protection against oxidation layer, Ag layers, transition zone, substrate layer,
Metal layer, the second protection against oxidation layer, the second priming coat and functional layer (also referred to as extra power ergosphere or the second functional layer) group
At.
First priming coat and the second priming coat are referred to as priming coat.
First protection against oxidation layer and the second protection against oxidation layer are referred to as protection against oxidation layer.
Reflectance coating provided by the invention increases metal layer in the other side of substrate layer, improves the reflectivity of reflectance coating.
The hardening coat is also known as the dirty hardening coat of anti-finger, the dirty hardened layer of anti-finger.It is reflected compared to other compound silvers
Film, reflectance coating provided by the invention belong to individual substrate silver reflectance coating.
Further, during the preparation process, the hardening coat is first configured to coating fluid.
The coating fluid is also known as hardening bath.
Further, the coating fluid of the hardening coat includes acrylic ester prepolymer, and acrylate monomer is light-initiated
Agent, fluorine element additive and organic solvent.
Fluorine element additive is also referred to as fluorine auxiliary agent.
Under UV lamp irradiation rapid polymerization occurs for the coating fluid of the anti-finger dirt hardening coat, so that fluoride (fluorine element
Additive) matrix resin surface is floated on, to provide the anti-smoothness and soil resistance for referring to dirty hardening coat surface, acrylate is pre-
Functional group content can have a major impact the hardness of coating surface in polymers and monomer, and then influence the resistance to of the dirty hardening coat of anti-finger
Grind characteristic.
Further, the material of the priming coat is selected from the group of one of acrylic resin or polyurethane or the two
It closes.
Further, the material of the priming coat in aqueous polyurethane, solvent borne polyurethane, acrylic system one
Kind or at least two combination.
Further, the material of the protection against oxidation layer is selected from acrylate polymer.
Further, the protection against oxidation layer choosing is from one of acrylic system.
Further, it is prepared by the way of physical vapour deposition (PVD) for described Ag layers.
Further, the transition zone, one in the acrylic resin or polyurethane relatively good with Ag binding force
Kind or combination of the two.
Further, the material of the substrate layer is selected from polyethylene terephthalate, polymethyl methacrylate, gathers
One of carbonic ester, polyamide, polyimides or polystyrene or at least two combination.Further, the substrate layer
The preferred polyethylene terephthalate of material (PET).
Further, the PET base material, using low-shrinkage transparent substrate.
Further, the standard electrode potential of Ag is+0.799V, and the metal layer mainly includes there is electricity with Ag material
The metal material of potential difference (standard electrode potential lower than Ag), and the metal material meets evaporation process requirement.
Further, metal layer material is selected from iron, copper, zinc, aluminium etc., as shown in the table.
| Serial number | Metal title | Metallochemistry symbol | Fusing point/DEG C | Standard electrode potential/V |
| 1 | Aluminium | Al | 660 | -1.663 |
| 2 | Silver | Ag | 961 | +0.799 |
| 3 | Gold | Au | 1062 | +1.692 |
| 4 | Zinc | Zn | 419 | -0.763 |
| 5 | Cadmium | Cd | 321 | -0.403 |
| 6 | Iron | Fe | 1200 | -0.440 |
| 7 | Copper | Cu | 1083 | +0.337 |
| 8 | Chromium | Cr | 1890 | -0.740 |
| 9 | Titanium | Ti | 1675 | -1.630 |
| 10 | Lead | Pb | 328 | -0.126 |
| 11 | Nickel | Ni | 1453 | -0.250 |
| 12 | Palladium | Pd | 1555 | +0.830 |
It is above to be suitable for the common metal of vacuum evaporation processing technology and its fusing point and its standard electrode potential in table.
Standard electrode potential is using standard hydrogen atom as reference electrode, i.e. the standard electrode potential value of hydrogen is set to 0, test condition 25
℃。
The presence of metal layer will have Ag layers of final reflectivity and influence, main reason is that metal layer with Ag layers
In wrapup procedure, it will directly contact, there is potential difference in itself between the two, to easily be formed in the environment of air and water former
Battery, the flatness for protecting Ag layer surface by corroding Al layers, it is ensured that do not decline in Ag layers of reflectivity certain time, certain
The process time of semi-finished product coating antioxidation coating can be increased in degree.Standard electrode potential and Ag the material standard electricity of metal layer
Electrode potential difference is bigger, i.e., △ E=E (Ag)-E (metal) value is bigger, easier to protect Ag layers not corroded by water oxygen, so that it is guaranteed that
Higher reflectivity.
Further, functional layer is selected from conductive anti-finger sump oil layer of ink, nonconducting anti-finger sump oil layer of ink or anti-finger dirt
Hardening coat etc..
Further, Ag layers with a thickness of 30-80nm, substrate layer with a thickness of 25-75 μm, 1-2 μm of transition zone, metal layer
10-60nm。
Hardening coat with a thickness of 0.5-2 μm, priming coat with a thickness of 0.1-0.5 μm, protection against oxidation layer with a thickness of
0.2-1 μm, extra power ergosphere with a thickness of 0.5-2 μm.
Further, the hardening coat with a thickness of 2 μm, priming coat with a thickness of 0.1 μm, the thickness of protection against oxidation layer
Degree be 0.2 μm, extra power ergosphere with a thickness of 2 μm.
Further, Ag layers with a thickness of 50-80nm, substrate layer with a thickness of 50-75 μm, transition zone with a thickness of 1.5 μ
M, metal layer with a thickness of 40nm.Preceding solution includes embodiment 13-16.
Further, Ag layers with a thickness of 50-60nm, substrate layer with a thickness of 50-75 μm, transition zone with a thickness of 1.5 μ
M, metal layer with a thickness of 40nm.Preceding solution includes embodiment 13-14 and embodiment 16.
By the dirty hardening coat of above-mentioned anti-finger, the first priming coat, the first protection against oxidation layer, Ag layers, transition zone, substrate layer,
Metal layer, the second protection against oxidation layer, the second priming coat and additional functionality thickness degree limit within the above range, to final
The yield of warpage, assembling after superelevation silver lustre reflectance coating reflectivity, reliability, which has, more preferably manages property.
Further, Ag layers of thickness is preferably 40-60nm.
Further, Ag layers of thickness is preferably 40-50nm.
Further, the thickness of PET base material layer is preferably 50-75 μm.
Further, the thickness of metal layer is preferably 30-50nm.
Further, the thickness of metal layer is preferably 40nm.
Further, the anti-coating fluid for referring to dirty hardening coat includes six official's polyurethane acrylic resins of 30 parts by weight
Prepolymer, 18 parts by weight, three official's polyurethane acrylic resin prepolymer, 12 parts by weight, three official's acrylate monomer, 3.6 parts by weight
Photoinitiator (photoinitiator 184), 0.3 parts by weight fluorine auxiliary agent and the mixing of 40 weight parts organic solvents.Wherein, organic solvent is second
Acetoacetic ester.
The present invention also provides a kind of methods for preparing reflectance coating, the described method comprises the following steps:
(1) it is first pre-processed using substrate, then in one layer of transition zone of the coated on one side of substrate；
(2) one layer of metal layer is deposited by way of opening corona in the another side of substrate；
(3) Ag layers are deposited on processed substrate transition zone, normal winding；
(4) protection against oxidation layer is successively coated in Ag layers and layer on surface of metal；
(5) one layer of priming coat is coated in protection against oxidation layer surface；
(6) it is coated with hardening bath on that face priming coat of Ag, obtains hardening coat after solidification；
(7) extra power ergosphere is coated on the priming coat of another side metal layer.
Further, it the described method comprises the following steps:
(1) it is first pre-processed using high transparency substrate, then in one layer of transition zone of the coated on one side of substrate, improves substrate
Flatness, enhance the subsequent binding force with Ag atom；
(2) one layer of metal layer is deposited by way of opening corona in the another side of substrate；
(3) Ag layers are deposited on processed substrate transition zone, normal winding；
(4) protection against oxidation layer is successively coated in Ag layers and layer on surface of metal；
(5) it is coated with one layer of priming coat in protection against oxidation layer surface, the coating for subsequent curing liquid or extra power ergosphere；
(6) it is coated with hardening bath on that face priming coat of Ag, obtains hardening coat after solidification；
(7) extra power ergosphere is coated on the priming coat of another side metal layer；
(8) slitting is carried out, shipment is packed.
Compared with existing high silver lustre reflectance coating, the surface of reflectance coating provided by the invention has high rigidity, excellent resistance to
Mill property, excellent soil resistance, simultaneously because this product is non-composite film, angularity≤3mm after material reliability, after reliability
Reflectivity is not less than the 99% of initial value.
Reflectance coating provided by the invention realizes following technical effect:
1, after silver layer face is coated with anti-fingers dirt hardened layer, the characteristics of high-wearing feature, high rigidity may be implemented, it can be avoided and lead
Scuffing, scratch of the tabula rasa to reflector plate surface, play the role of protecting silver-colored reflectance coating, while also not scratching, scratching light guide plate, have
There is high reliability；
2, the evaporated metal layer in PET base material layer is able to extend Ag layers of preparation and enters the painting of lower one of antioxidation coating after the completion
The processing service life before cloth process, while Ag layers of reflectivity can be effectively improved, to improve the overall package brightness of silver-colored reflectance coating
Degree；
3, the method for preparing reflectance coating using individual substrate reduces material and produces the warpage after offline and reliability, keeps away
Exempted from present on the market the difficult to govern control of composite material warpage the problem of, to further increase the yield of complete machine assembling.
Detailed description of the invention
Fig. 1 is existing common compound high silver lustre reflecting film structure schematic diagram；
Fig. 2 is a kind of anti-structural schematic diagram for referring to dirty silver-colored reflectance coating of super bright high reliability provided by the invention.
Specific embodiment
In order to make the personnel of correlative technology field better understand the invention patent, below in conjunction with the embodiment of the present invention and
Attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention can be combined with each other.
As shown in Figure 1, existing high silver lustre reflectance coating includes protection against oxidation layer 10, Ag layer 20, PET base material layer 30, heat is dry
Glue composite layer 40, PET base material layer 50.There are two substrate layers for existing high silver lustre reflectance coating tool.
As shown in Fig. 2, reflectance coating provided by the invention includes: the first hardening coat 60, the first priming coat 70, the first oxygen
Change protective layer 10, Ag layer 20, transition zone 80, PET base material layer 30, metal layer 90, the second protection against oxidation layer 10, the second priming coat
70, extra power ergosphere 100 wherein will will use hardening coat in extra power ergosphere embodiment below, so being also known as
Two hardening coats 100.First hardening coat and the second hardening coat are referred to as hardening coat, the also referred to as anti-dirty hardening coat of finger.
Reflectance coating provided by the invention is further illustrated below in conjunction with embodiment.
Reflectance coating provided by the invention is tested for the property in accordance with the following methods:
Silver-colored face reflectivity: according to the standard of NIST 2054, light is divided using Agilent Cary5000 UV, visible light near-infrared
Reflectivity of each silver-colored reflectance coating of degree measurement examination at 550nm.Silver face reflectivity refers to that surface layer is that anti-finger is dirty hard in reflectance coating
Change the reflectivity of layer (i.e. the first hardening coat) one side.
Adhesive force: according to the standard of GB 1720-1979 " paint film adhesion measuring method ", the adhesive force of testing coating, wherein
100/100 represents not demoulding, and 90/100 represents and falls off 10%.
Wearability: each hardened layer is tested according to HG/T 4303-2012 " Surface hardened layer polyester film wearability measuring method "
It is wear-resisting lossy, using 0000# steel wool, 1000gf/cm2 weight bearing passes through detection abrasion resistance of the membrane surface without scuffing
The limit, to judge the abrasion resistant effect of film.
Water contact angle: according to the standard of GB/T 30693-2014 " measurement of plastic film and water contact angle ", anti-finger is tested
The surface water contact angle of dirty hardened layer.Water contact angle is bigger, and the dirty ability of anti-finger is stronger.
Warpage is tested after reliability: in temperature being 70 DEG C by reflectance coating, the high temperature and humidity condition of humidity 95% places 500h
After tested, warpage test specification be 10cm × 10cm, depth of camber test tested using feeler gauge.
Silver layer corrosion condition judges after reliability: mainly observation silver layer material falls situation, goes to sentence using light-illuminating
It is disconnected whether light transmission, judgment criteria is that the general > difference > of the good > of outstanding > is very poor.Wherein, outstanding is 100% without light transmission, well
For there are a small amount of light transmission, for generally edge 2mm there are light transmission, it is saturating that difference is that edge 2mm or more has large area in edge 2mm
Light, very poor is substantially all light transmission.
Fold judges after reliability: carrying out assembling backlight after reflectance coating is cut corresponding size, backlight is 70 in temperature
DEG C, the high temperature and humidity condition of humidity 95% carries out lighting test after placing 500h, and specification is 5.5 cun.Judgment criteria is normal >
Slight > is serious.It is normally corrugationless phenomenon, slightly for edge, there are waves to stick up, and seriously runs through whole diaphragm for fold.
Assembling yield: it is accounted in total quantity according to the non-defective unit that the silver-colored reflectance coating that 1000 specifications are 5.5 cun is assembled into backlight
Ratio.
Pencil hardness: according to the standard of GB 1720-1979 " paint film adhesion measuring method ".
Warpage test: the specification of test is 10cm × 10cm, tests depth of camber using feeler gauge.
The coating fluid of hardening coat used in embodiment includes that six official's polyurethane acrylic resins of 30 parts by weight are pre-
Polymers, 18 parts by weight, three official's polyurethane acrylic resin prepolymer, 12 parts by weight, three official's acrylate monomer, 3.6 parts by weight light
Initiator (photoinitiator 184), 0.3 parts by weight fluorine auxiliary agent and the mixing of 40 weight parts organic solvents.Wherein, organic solvent is acetic acid
Ethyl ester.
The material of the priming coat is acrylic.
The material of the protection against oxidation layer is acrylic.
Embodiment 1
A kind of reflectance coating provided by the invention, the reflectance coating successively include the first hardening coat, the first priming coat, first
Protection against oxidation layer (abbreviation antioxidation coating), Ag layers, transition zone, substrate layer, metal layer, the second protection against oxidation layer, the second bottom
Coating and extra power ergosphere (the second hardening coat).
The first hardening coat of the present embodiment 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of (i.e. the first priming coat and the second primary coat
The thickness of layer is respectively) 0.1 μm, protection against oxidation layer (the i.e. thickness of the first protection against oxidation layer and the second protection against oxidation layer
Respectively) 10 with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1 μm, and PET base material layer 30 is with a thickness of 75 μ
M, metal layer 90 are aluminium with a thickness of 10nm, metal layer material, and extra power ergosphere (the second hardening coat) 100 is with a thickness of 2 μm.
Embodiment 2
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 10nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 3
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and for transition zone 80 with a thickness of 2 μm, PET base material layer 30 is thick
Degree is 75 μm, and metal layer 90 is aluminium with a thickness of 10nm, metal layer material, and extra power ergosphere (the second hardening coat) 100 is with a thickness of 2
μm。
Embodiment 4
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 20nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 5
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 30nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 6
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 40nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 7
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 50nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 8
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 60nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 9
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 40nm, metal layer material is zinc, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 10
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 40nm, metal layer material is iron, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 11
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 40nm, metal layer material is copper, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 12
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 40nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 40nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 13
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 50nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 40nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 14
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 60nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 40nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 15
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 80nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 75 μm, for metal layer 90 with a thickness of 40nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 16
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 50nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 50 μm, for metal layer 90 with a thickness of 40nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 17
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 50nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 38 μm, for metal layer 90 with a thickness of 40nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
Embodiment 18
Such as a kind of reflectance coating that embodiment 1 provides, the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 50nm, and transition zone 80 is with a thickness of 1.5 μm, PET base material layer 30
With a thickness of 25 μm, for metal layer 90 with a thickness of 40nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 thickness
It is 2 μm.
In order to compare individual silver-colored reflectance coating (reflectance coating provided by the invention) and (the comparative example 3-5 offer of composite silver reflectance coating
Reflectance coating) performance, the warpage situation especially after reliability, we select shrinking percentage to be relatively close to, and thickness is different
PET base material (MD≤- 0.20%, TD≤- 0.04%) and aluminum plated PET substrate.
Comparative example 1
A kind of reflectance coating, by the first hardening coat, the first priming coat, the first protection against oxidation layer, Ag layers, transition zone, and
PET base material layer composition.First hardening coat 60 is with a thickness of 2 μm, and the first priming coat 70 is with a thickness of 0.1 μm, the first protection against oxidation
Layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and transition zone 80 is with a thickness of 1.5 μm and PET base material layer 30 with a thickness of 75 μm.
Comparative example 2
The reflectance coating provided such as embodiment 1, wherein the first hardening coat 60 is with a thickness of 2 μm, and priming coat 70 is with a thickness of 0.1 μ
M, protection against oxidation layer 10 is with a thickness of 0.2 μm, and Ag layer 20 is with a thickness of 30nm, and for transition zone 80 with a thickness of 0 μm, PET base material layer 30 is thick
Degree is 75 μm, for metal layer 90 with a thickness of 10nm, metal layer material is aluminium, extra power ergosphere (the second hardening coat) 100 with a thickness of
2μm.The reflectance coating is without transition zone.
Comparative example 3
A kind of reflectance coating, by protection against oxidation layer, Ag layers, PET base material layer, hot dry glue composite layer and aluminum plated PET substrate
Layer composition, wherein protection against oxidation layer 10 with a thickness of 0.2 μm, Ag layer 20 with a thickness of 50nm, PET base material layer 30 with a thickness of 50 μm,
Hot dry glue composite layer 40 is with a thickness of 4 μm, and aluminum plated PET substrate layer 50 is with a thickness of 25 μm.
Comparative example 4
A kind of reflectance coating, by protection against oxidation layer, Ag layers, PET base material layer, hot dry glue composite layer and aluminum plated PET substrate
Layer composition, wherein protection against oxidation layer 10 with a thickness of 0.2 μm, Ag layer 20 with a thickness of 50nm, PET base material layer 30 with a thickness of 25 μm,
Hot dry glue composite layer 40 is with a thickness of 4 μm, and aluminum plated PET substrate layer 50 is with a thickness of 50 μm.
Comparative example 5
A kind of reflectance coating, by protection against oxidation layer, Ag layers, PET base material layer, hot dry glue composite layer and aluminum plated PET substrate
Layer composition, wherein protection against oxidation layer 10 with a thickness of 0.2 μm, Ag layer 20 with a thickness of 50nm, PET base material layer 30 with a thickness of 38 μm,
Hot dry glue composite layer 40 is with a thickness of 4 μm, and aluminum plated PET substrate layer 50 is with a thickness of 38 μm.
1 comparative example 2 of table, the reflecting properties testing result for the reflectance coating that embodiment 1-3 is provided
From the comparing result in table 1 it can be found that in the case where silver thickness is certain, the reflectivity of silver layer can be with mistake
It crosses the increase of layer material thickness and is promoted, but after the thickness of transition zone reaches certain value, reflectivity will not be after
It is continuous to rise.Its reason, which essentially consists in transition zone, can increase the flatness of substrate, to improve the reflection of silver layer to a certain extent
Rate；Secondly, the adhesive force of silver layer is related with transition zone, no transition zone, adhesive force is relatively poor, as the thickness of transition zone increases
Add, adhesive force is promoted more obvious.Embodiment 2 has reached an opposite optimum value.
The main performance testing result for the reflectance coating that 2 comparative example 1 of table, embodiment 2 and embodiment 4-11 are provided
In table 2, it is offline silver face reflectivity be according to preparation step provided in the present invention preparation complete silver-colored reflectance coating at
Product, the plating offline volume sample of the silverskin silver-colored face reflectivity (uncoated antioxidation coating) after 6H that keeps sample is being handled after metal layer has plated
Ag layers are deposited on the substrate transition zone crossed, keeping sample after normal winding puts the silver-colored face reflectance test carried out after 6H in air,
The Ag layers of direct contact metal layer of winding.From the comparing result in table 2 it can be found that comparative example 1 and embodiment 2,4-8 can be seen
Out, the presence of metal layer A l will have Ag layers of final reflectivity and influence, and Ag layers of reflectivity, will with the increase of Al thickness
It can gradually increase, after Al thickness degree reaches certain value, Ag layers of reflectivity will not be continued growing.Main reason is that Al
Layer is with Ag layers in wrapup procedure, it will directly contacts, there is potential difference in itself between the two, thus in the environment of air and water
Primary battery is easily formed, the flatness for protecting Ag layer surface by corroding Al layers, it is ensured that in Ag layers of reflectivity certain time not
Decline can increase the process time of semi-finished product coating antioxidation coating to a certain extent.It can from embodiment 6 and embodiment 9-11
To find out, the standard electrode potential of metal layer differs bigger with Ag material standard electrode potential, i.e. △ E=E (Ag)-E (metal)
Value is bigger, easier to protect Ag layers not corroded by water oxygen, so that it is guaranteed that higher reflectivity.
The main performance testing result for the reflectance coating that 3 embodiment 6 of table, embodiment 12-15 are provided
| Performance | Silver-colored face reflectivity |
| Embodiment 6 | 96.50% |
| Embodiment 12 | 97.12% |
| Embodiment 13 | 97.24% |
| Embodiment 14 | 97.27% |
| Embodiment 15 | 97.25% |
From the comparing result in table 3 it can be found that thickness of the silver-colored face reflectivity mainly with Ag layers is closely bound up, with Ag layers
The promotion of thickness, silver-colored face reflectivity are gradually promoted, and after Ag thickness degree reaches certain value, reflectivity will not be continued growing.It is real
For Ag layers in example 13,14 of thickness is applied from the angle of cost and performance, an optimum value is had reached.
The main performance testing result for the reflectance coating that 4 comparative example 3-5 of table, embodiment 13-18 are provided
Comparing result from table 4, embodiment 13,16-18 can be seen that being thinned with substrate layer, subsequent reliability
Backlight is relatively easy to fold occur afterwards, individual optimal substrate selection is with a thickness of 50 and 75 μm.Comparative example 3-5 and embodiment
13,16-18 can be seen that the preparation method provided through the invention, the reflectivity of silver-colored plane materiel material can be effectively improved, to make
Standby super bright silver-colored reflectance coating.In addition, antioxidation coating and hardening coat are increased by silver layer surface and layer on surface of metal, it can
The corrosion condition of Ag layer after material reliability is effectively reduced, while the assembling yield for improving material is up to 97%.Individual system
Standby scheme, is effectively reduced the warpage after individual reliability of material, is perplexed to solve current composite silver reflectance coating on the market
Individual reliability warpage issues.Embodiment 13-16 is the present invention preferably embodiment, and warpage is low after reliability, is reflected simultaneously
Rate is high, and silver layer corrosion condition is outstanding after reliability, and assembling yield is high.Wherein, the silver layer of embodiment 15 is thicker, higher cost, institute
With more preferred embodiment 13-14 and embodiment 16.
The above is only the preferred embodiments of the invention patent, are not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is done any repairs
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of silver reflectance coating, the reflectance coating successively includes the first protection against oxidation layer, Ag layers, substrate layer, metal layer, second
Protection against oxidation layer.
2. reflectance coating according to claim 1, which is characterized in that the reflectance coating successively includes the first hardening coat,
One priming coat, the first protection against oxidation layer, Ag layers, transition zone, substrate layer, metal layer, the second protection against oxidation layer, the second primary coat
Layer, functional layer.
3. reflectance coating according to claim 2, which is characterized in that during the preparation process, the hardening coat is first configured to
Coating fluid, the coating fluid of the hardening coat include acrylic ester prepolymer, acrylate monomer, photoinitiator, fluorine element addition
Agent and organic solvent.
4. reflectance coating according to claim 2, which is characterized in that first priming coat and the second priming coat are referred to as bottom
The material of coating, the priming coat is selected from one of acrylic resin or polyurethane or combination of the two.
5. reflectance coating according to claim 1, which is characterized in that the first protection against oxidation layer and the second anti-oxidation guarantor
Sheath is referred to as protection against oxidation layer, and the material of the protection against oxidation layer is selected from acrylate polymer.
6. reflectance coating according to claim 2, which is characterized in that the transition zone is selected from the propylene good with Ag binding force
One of acid resin or polyurethane or combination of the two.
7. reflectance coating according to claim 2, which is characterized in that the functional layer is selected from the dirty hardening coating of anti-finger
Layer, the anti-combination for referring to one of sump oil layer of ink or antistatic coating or at least the two.
8. reflectance coating according to claim 1, which is characterized in that the metal layer in iron, copper, zinc, aluminium one
Kind.
9. reflectance coating according to claim 2, which is characterized in that Ag layers with a thickness of 30-80nm, substrate layer with a thickness of
25-75 μm, transition zone with a thickness of 1-2 μm, metal layer with a thickness of 10-60nm.
10. a kind of method for preparing reflectance coating as claimed in claim 2, which is characterized in that the described method comprises the following steps:
(1) it is first pre-processed using substrate, then in one layer of transition zone of the coated on one side of substrate；
(2) one layer of metal layer is deposited by way of opening corona in the another side of substrate；
(3) Ag layers are deposited on processed substrate transition zone, normal winding；
(4) protection against oxidation layer is successively coated in Ag layers and layer on surface of metal；
(5) one layer of priming coat is coated in protection against oxidation layer surface；
(6) it is coated with hardening bath on that face priming coat of Ag, obtains hardening coat after solidification；
(7) extra power ergosphere is coated on the priming coat of another side metal layer.
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Cited By (1)
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