CN106589437A - Index matching film for capacitive touch screen and preparation method of index matching film - Google Patents
Index matching film for capacitive touch screen and preparation method of index matching film Download PDFInfo
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- CN106589437A CN106589437A CN201611154785.3A CN201611154785A CN106589437A CN 106589437 A CN106589437 A CN 106589437A CN 201611154785 A CN201611154785 A CN 201611154785A CN 106589437 A CN106589437 A CN 106589437A
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- refractive index
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- priming operation
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Abstract
The invention relates to an index matching film for a capacitive touch screen and a preparation method of the index matching film. The index matching film comprises a substrate, wherein a first precoating primer and a second precoating primer are arranged on two sides of the substrate respectively; an anti-adhesion hard coating is formed on the first precoating primer; an index matching layer is formed on the second precoating primer and is obtained through coating with a high-refractive-index coating; the high-refractive-index coating at least contains an ionizing radiation substance, metallic oxide particles and a photoinitiator, and the weight ratio of the metallic oxide particles to the ionizing radiation substance is 1:2-1:1; and the absolute value of the refractive index difference between the second precoating primer and the index matching layer is 0.03 or below. As the index matching layer is arranged, and the refractive index difference between the index matching layer and the precoating primers is controlled, so that when a transparent matrix formed by the index matching layer and the precoating primers is applied to the capacitive touch screen, etching pattern traces and rainbow stripes are avoided, and the index matching film has excellent transparency and scratch resistance.
Description
Technical field
The present invention relates to a kind of touch screen technology field, more particularly to a kind of capacitance plate refractive index matching film.
Background technology
The touch screen induction technology of main flow, including resistance-type in the market, condenser type, infrared-type, Supersonic waves etc.,
Due to the requirement that consumer electronics are compact, infrared-type is mainly used in the electronic equipments such as middle large scale with Supersonic waves, takes
Band property electronic product includes mobile phone and tablet PC etc., mainly based on resistance-type and condenser type.Before small-medium size is touched
Screen mainly based on resistance-type, main reasons is that the technology more ripe, low production cost of resistance-type, and the amount of being applied to more
Greatly, the consumption electronic products of low unit price, but after releasing with the mobile phone with projecting type capacitor formula touch-screen, whole situation has very
Big change, has arrived now, and capacitive touch screen occupation rate has significantly surmounted resistance-type, becomes small-medium size portable electronic
The main flow touching technique of product.
For in capacitive touch screen structure, it includes a sensing grid (sense array/sensing
Arrangement), this grid is clipped between two glassivations, and usual outermost layer is overcoat, and its positioning principle is
Determine the position of contact point using the change of the static electric field on sensing grid, when finger Touch screen, finger and
An electric capacity is formed between grid, controller calculates the coordinate position of contact point using the variable quantity of grid electric parameter.
Capacitive touch screen is different from resistive touch screen, coordinates the functions such as multi-point touch, its upper and lower indium tin oxide electricity
Polar curve road is to be covered with whole screen, in order to avoid indium tin oxide conductive film is scratched in process, affects the matter of display
Amount, indium tin oxide conductive film (basement membrane is mainly PET film) before plated film all can do stiffened process to membrane surface, due to
Indium tin oxide (ITO) refractive index height (about 2.0), its refractive index of the hard coat film of general stiffened low (about 1.5), then after etching
Because ITO layer refractive index has differences with hard conating refractive index, each bed boundary interference differs ITO circuits, causes the ITO after etching
Circuit easily manifests on screen, reduces the visuality of touch-screen.
In order to avoid this phenomenon, one layer of refractive index matching layers need to be done between indium tin oxide conductive layer and hard conating
(Index Matching Layer), after this layer of refractive index matching layers superposition so that ITO etching regions and non-etched areas
Aberration is close to, and reduces the vestige of circuit etching, the effect of the shadow that disappears is reached, in addition, in order to tackle process requirements, refractive index matching layers
Surface is very flat, lacks sliding, and surface adhesion phenomena is susceptible in actual production process, and long-time is placed and can produced
Face deforms, and must do one layer of antiseized hard conating in the another side of basement membrane, improves the winding performance of film.Traditional refractive index matching layers
After with the high low-index material of dry method magnetic control sputtering plating, then indium tin oxide conductive layer is plated, this kind of method needs high-vacuum apparatus,
Not only equipment investment is larger, and speed of production is slow, and efficiency is low, does not only have production scale, while production cost is also higher.Separately have
Using wet mode, prior to being coated with refractive index matching layers, then the low folding material of sputter on transparent plastic basement membrane (usually PET)
With indium tin oxide conductive layer, due to transparent plastic membrane surface and refractive index matching layers poor adhesive force, typically meeting is in transparent modeling
Material membrane surface is pre-coated with one layer of pre- priming operation (primer), to the attachment for promoting plastic-based film and high index of refraction coating
Power, but refractive index matching layers it is excessive with the refractive index difference of pre- priming operation when, it will usually cause coating surface rainbow line serious, sternly
Ghost image rings display image quality, it is necessary to which control was both full using the pre- priming operation of plastic-based film and the refringence of refractive index matching layers
Sufficient refractive index matching layers and the adhesive force of plastic-based film, while reducing the aberration of circuit after indium tin oxide etching, and improve tactile
Touch the display image quality of screen.
The content of the invention
The purpose of the present invention is to overcome the defect of prior art, provide a kind of capacitance plate refractive index matching film, the matching
Film is applied in capacitance plate without etch patterning vestige and rainbow line phenomenon, with good translucency and Marresistance.
It is a further object to provide the preparation method of this matching film.
The purpose of the present invention is achieved by the following technical solution:
A kind of capacitance plate refractive index matching film, the refractive index matching film includes base material, and in base material Liang Ce Fen Do the is provided with
One pre- priming operation and the second pre- priming operation, form the hard conating that prevents adhesion, the shape on the second pre- priming operation on the first pre- priming operation
Into refractive index matching layers, wherein, the second pre- priming operation is less than 0.03 with the absolute value of the refractive index difference of refractive index matching layers,
Refractive index matching layers are obtained after coating by high index of refraction coating, high index of refraction coating including at least ionizing radiation material,
Metal oxide particle and light trigger, metal oxide particle is 1 with ionizing radiation substance weight ratio:2~1:1.
Above-mentioned capacitance plate refractive index matching film, the refractive index of the refractive index matching layers is 1.65~1.75.
Above-mentioned capacitance plate refractive index matching film, the refractive index matching layers thickness is 0.5 μm~2.0 μm, preferably 0.7 μm
~1.5 μm.
Above-mentioned capacitance plate refractive index matching film, the metal oxide particle is with the weight ratio of the ionizing radiation material
1:1.7~1:1.2.
Above-mentioned capacitance plate refractive index matching film, the metal oxide particle particle diameter is 0.01 μm~0.15 μm, preferably
0.04 μm~0.08 μm.
Above-mentioned capacitance plate refractive index matching film, the metal oxide particle is zirconium oxide, zinc oxide, antimony oxide, five oxygen
Change one or more in two Niobium, titanium dioxide.
Above-mentioned capacitance plate refractive index matching film, the refractive index of the second pre- priming operation is 1.62~1.72.
The difference of the refractive index of above-mentioned capacitance plate refractive index matching film, the second pre- priming operation and refractive index matching layers≤
0.03。
Above-mentioned capacitance plate refractive index matching film, it is described to prevent adhesion hard coat layer thickness for 1.0 μm~2.0 μm.
Above-mentioned capacitance plate refractive index matching film, the hard conating that prevents adhesion contains silicon dioxide granule, described titanium dioxide
The particle diameter of silicon particle is 0.1~0.2 μm.
The preparation method of above-mentioned capacitance plate refractive index matching film is:
The method comprising the steps of:The first pre- priming operation and the second pre- priming operation are formed respectively in the both sides of base material;
The hard conating that prevents adhesion is formed on the first pre- priming operation;Refractive index matching layers are formed on the second pre- priming operation, wherein second is pre-
The absolute value of the difference of the refractive index of priming operation and refractive index matching layers is less than 0.03.
Compared with prior art, the present invention is by the pre- priming operation with specific refractive index, being superimposed one layer of refractive index
Matching layer, and the difference of both refractive indexes is controlled, under the conditions of optical property is not damaged, can ensure to reduce circuit etching figure
Under case, effectively solving rainbow line phenomenon, while with excellent optical property and Marresistance.
Description of the drawings
Fig. 1 is the present invention for capacitance plate refractive index matching film schematic diagram;
Fig. 2 is the Making programme of capacitance plate refractive index matching film of the present invention.
Each label is expressed as in figure:10th, base material, the 20, first pre- priming operation, the 30, second pre- priming operation, 40, prevent adhesion it is hard
Coating, 50, refractive index matching layers.
Specific embodiment
The capacitance plate refractive index matching film of the present invention include base material, the first pre- priming operation, the second pre- priming operation, prevent adhesion it is hard
Coating and refractive index matching layers, the metal oxide particle containing specified particle diameter in refractive index matching layers, so as to index matching
Layer reaches predetermined refractive index.To reach required refractive index, while taking into account refractive index matching layers light permeability, it is necessary to make
With the particle of specific size distribution, the present invention using the particle diameter of particle at 0.01 μm~0.15 μm, preferably 0.04 μm~0.08 μm,
When particle diameter is more than 0.15 μm, the transparency decline of refractive index matching layers, mist degree is also raised.
Refractive index matching layers with high index of refraction coating, weight and the ionizing radiation substance weight ratio of metal oxide particle
For 1:2~1:Between 1, preferably 1:1.7~1:1.2.Because the weight of the weight of metal oxide particle and ionizing radiation material
Than more than 1:When 1, optical transmission is reduced, and coating stability is deteriorated, when the weight and ionizing radiation of metal oxide particle
Substance weight ratio is less than 1:Refractive index and pH effect effect when 2, needed for not reaching.
Being adapted to the high index of refraction particle of the present invention can be selected from following material:Aluminum oxide, zirconium oxide, titanium dioxide, oxidation
Zinc, niobium pentaoxide, cerium oxide etc., above-mentioned high index of refraction particle does not limit one kind and uses, and can be the mixed of one or more
Compound, considers from hardness with optical performance, the present invention preferably zirconium dioxide.
To reduce the aberration of circuit etching, it is to avoid affect display image quality with visual, the folding of the second pre- priming operation
Penetrate rate the smaller the better with refractive index matching layers refringence, the present invention preferably less than 0.03.During higher than 0.03, index matching
Layer rainbow line becomes weight, and display image quality is also deteriorated.
Prevent adhesion in hard conating, the hard coat layer thickness that prevents adhesion is 1.0 μm~2.0 μm.When thickness is less than 1.0 μm, the later stage
Scuffing is easily produced in process, it is windability to be deteriorated more than 2.0 μm.
Prevents adhesion the silicon dioxide granule that also contain in hard conating, and the particle diameter of silicon dioxide granule is 0.1~0.2 μm, works as grain
When seed footpath is more than 0.2 μm, the transparency variation of the hard conating that prevents adhesion, mist degree is raised, and when particle diameter is less than 0.1 μm, is reached
Less than desired preventing adhesiving effect.
First pre- base coat, the second pre- base coat, refractive index matching layers and the hard conating solidified resin group that prevents adhesion
Ionizing radiation matrix in compound can be selected from polyurethane (methyl) acrylate, polyester (methyl) acrylate,
Epoxy (methyl) acrylate, pure acrylic resin etc..Wherein, polyurethane (methyl) acrylate can be selected from:Fat
Adoption urethane three (methyl) acrylate, aliphatic polyurethane four (methyl) acrylate, aliphatic polyurethane five (methyl) third
Olefin(e) acid ester, aliphatic polyurethane six (methyl) acrylate, aromatic series adoption urethane three (methyl) acrylate, aromatic series adoption
Urethane four (methyl) acrylate, aromatic series adoption urethane five (methyl) acrylate, (methyl) third of aromatic series adoption urethane six
Olefin(e) acid ester etc.;Epoxy (methyl) acrylate can be selected from:Epoxy acrylate, epoxy methacrylates, modified epoxy third
Olefin(e) acid ester, 2- hydroxyl -3- benzene oxygen propyl acrylates, fatty acid modified epoxy acrylate, modified bisphenol A epoxy acrylic acid
Ester, epoxy soybean oil acrylate, modified six sense based epoxy acrylates etc.;Polyester (methyl) acrylate can be selected from:
Polyester acrylate, modified polyester acrylate ester, tetrafunctional base polyester acrylate, fatty acid modified polyester hexaacrylate,
Polyester chloride acrylic acid, ester hyperbranched polyester acrylic ester etc., preferred aliphat urethane acrylate of the present invention.
In order that refractive index matching layers crosslink reaction with the resin prevented adhesion in hard conating curable resin composition
And refractive index matching layers are formed, light trigger is also added in curable resin composition.Light trigger used in the present invention does not have
There are special requirement, as long as various types of light triggers of curing of coatings can be realized.Light trigger has:Cracking type causes
Agent:Such as:1- hydroxy-cyclohexyl phenyl ketones (184), 2- hydroxy-methyls phenyl-propane -1- ketone (1173), 2- methyl isophthalic acids-(4- first sulphur
Base phenyl) -2- morpholinyls -1- acetone (907), benzoin dimethylether (651), 2,4,6 (trimethylbenzoyl) dipheny oxides
Change phosphine (TPO) etc.;Photoinitiator (hydrogen-abstraction):Such as benzophenone (BP), 2- isopropyl thioxanthones (ITX).It is preferred that:1-
Hydroxy-cyclohexyl phenyl ketone (184).These light triggers can be used alone, it is also possible to by 2 kinds or two or more is applied in combination.
As needed, solvent can also be added in refractive index matching layers and the hard conating curable resin composition that prevents adhesion,
The example of solvent includes:Ketone such as acetone, butanone, methyl ethyl ketone, methyl iso-butyl ketone (MIBK) and cyclohexanone;Ester such as methyl acetate,
Ethyl acetate, propyl acetate, and butyl acetate;Alcohols such as methyl alcohol, ethanol, normal propyl alcohol, isopropanol, n-butanol and isobutanol etc.,
Aliphatic hydrocarbon such as hexane, heptane and hexamethylene;Arene such as benzene, toluene and dimethylbenzene;Halogenated hydrocarbons such as dichloromethane, dichloro
Ethane and carbon tetrachloride.In these solvents, our preferred butanone and methylisobutylketone, solvent can be used alone or with two kinds
Or multiple combination is used.The concentration and viscosity of coating fluid can purpose of the invention suitably selected, with profit it is follow-up plus
Work.
It is flat with the hard conating that prevents adhesion in order to improve the first pre- base coat, the second pre- base coat, refractive index matching layers
Whole degree, to reduce volcanic crater, pin hole and defect etc., can also add leveling auxiliary agent in curable resin composition.The stream of the present invention
Flat auxiliary agent can be for fluorine system, organosiloxane or organic-silicon-modified acrylic acid leveling auxiliary agent such as:Big Japanese ink chemistry
(DainipponInk&Chemicals) MEGAFACE F440, F445, F470, F553, F554, F556, Bi Ke chemistry (BYK
Additive&Instruments BYK-333, BYK-377, BYK-378, BYK UV-3530, BYK UV-3535, BYKUV-)
3576, win Flow 300, Flow 370, Flow 425, Rad 2200N, Rad 2250, the Rad of wound Degussa (EVONIK)
2300, Levaslip 835, Levaslip 837, Levaslip 867, Levaslip 879 of the modest chemistry of moral etc..These levellings
Auxiliary agent can be used alone, it is also possible to use 2 kinds or its combination of the above.
The base material of the present invention is preferably plastic sheeting.The example of plastic sheeting includes:Such as PET
(PET), PEN (polyethylene naphthalate), polycarbonate film (PC), polymethyl methacrylate film
(PMMA), the laminated film of ABS and PET laminated films, PC and PMMA, polyether-ether-ketone (polyether ether ketone;
PEEK), cellulose diethylester (diacetylcellulose), cellulose iii ethyl ester (triacetylcellulose;TAC), third
Olefin(e) acid resin (acrylicresin), cyclic olefine copolymer (the metallocene catalyzed of aromatic metal class catalysis
Cyclo olefin copolymer) etc..Preferably PET (PET) of the invention, polycarbonate film (PC)
With cellulose iii ethyl ester (TAC), PET (PET) is more highly preferred to.The thickness of plastic sheeting is without special
Limit, generally, the thickness at 20 μm~300 μm, preferably in the range of 50 μm~250 μm.When the thickness is less than 20 μm,
Mechanical strength will be inadequate, and cured film deformation is too big in solidification;When thickness is more than 300 μm, increase difficulty of processing, therefore,
Thickness outside the above range is inadvisable.Base material in the present invention is preferably transparent plastic sheeting, and the light of transparent membrane is saturating
Cross rate in 400nm~700nm wave-length coverages total light transmittance preferably more than 85%, more preferably more than 90%.According to need
Will, one or two surface of base material can be processed or be surface-treated with bottom precoating, such as sandblasting or etching shape
Into rough surface, to strengthen the adhesive force of face coat and base material.Included by aoxidizing the example being surface-treated:Corona
Discharge process, using the process of flame, using the process of plasma, or using ultraviolet irradiation process in the presence of ozone.
The demand that surface treatment is processed according to the characteristic of stromal surface with back segment is suitably selected, generally, from operability and performance
Consider, preferentially select bottom precoating treatment.
The coating process of pre- priming operation and refractive index matching layers to forming the present invention has no particular limits, as long as can
Form the coating of the present invention, it is possible to use conventional method, such as stick coating method, scraper for coating method, Mayer stick coating methods, roller coat
Method, scraper plate rubbing method, bar stitches rubbing method and micro-gravure coating process to form coating.The present invention selects stick coating method and micro- intaglio plate coating
Method.
As the ultraviolet for the resin solidification in refractive index matching layers of the present invention can from high-pressure sodium lamp, fusion H lamps or
Xenon lamp is obtained.The light dosage for irradiating is commonly used in 200mj/cm2~1,000mj/cm2In the range of, preferred 200mj/cm2~
500mj/cm2。
The present invention is specifically described with reference to specific embodiment, but embodiments of the present invention are not limited to this.
Embodiment 1
Base material thickness of the present invention is 125 μm;First precoated shet is made up of polyurethane;Second precoated shet is by polyurethane, dioxy
Change titanium particle composition, refractive index is 1.62;Hard conating prevent adhesion by the silicon dioxide granule and light that polyurethane, particle diameter are 0.1 μm
Initiator is formed by ultraviolet light polymerization, and its thickness is 1.0 μm;Refractive index matching layers are by high index of refraction coating by right at 80 DEG C
The coating of formation is dried 2 minutes afterwards, with 400mJ/cm2Light quantity, by ultraviolet irradiation dry coating is solidified,
Into high index of refraction coating includes urethane acrylate, the TiO 2 particles that particle diameter is 0.01 μm, methyl iso-butyl ketone (MIBK) and light
Initiator, Zirconia particles are 1: 2 with the weight ratio of urethane acrylate, and its thickness is 0.5 μm, and refractive index is 1.65.
Embodiment 2
The present embodiment base material thickness is 125 μm;First precoated shet is made up of phenolic resin;Second precoated shet is by polyester
Acid resin, TiO 2 particles composition, refractive index is 1.65;The hard conating that prevents adhesion is 0.2 μm by aliphatic polyurethane, particle diameter
Silicon dioxide granule is formed with light trigger by ultraviolet light polymerization, and its thickness is 1.5 μm;Refractive index matching layers are by high index of refraction
Coating by 80 DEG C to formed coatings be dried 2 minutes afterwards, with 400mJ/cm2Light quantity, by ultraviolet irradiation to dry
Dry coating is solidify to form, high index of refraction coating comprising epoxy acrylic resin, the zinc oxide particles that particle diameter is 0.03 μm,
Methyl iso-butyl ketone (MIBK) and light trigger, Zirconia particles are 1: 1.7 with the weight ratio of epoxy acrylic resin, and its thickness is 0.8 μ
M, refractive index is 1.66.
Embodiment 3
The present embodiment base material thickness is 100 μm;First precoated shet is made up of phenolic resin;Second precoated shet is by polyester
Acid resin, TiO 2 particles composition, refractive index is 1.68;Hard conating prevent adhesion by aliphatic polyurethane pentamethyl acrylic acid
Ester, particle diameter are that 0.2 μm of silicon dioxide granule and light trigger are formed by ultraviolet light polymerization, and its thickness is 1.7 μm;Refractive index
Matching layer by high index of refraction coating by the way that 2 minutes are dried to the coating that formed at 80 DEG C afterwards, with 400mJ/cm2Light quantity, lead to
Cross ultraviolet irradiation to solidify to form dry coating, high index of refraction coating includes six official's aliphatic polyurethane acrylic acid
Ester, particle diameter are 0.07 μm of antimony oxide particle, ethyl acetate, propylene glycol monomethyl ether and light trigger, Zirconia particles and six official's fat
The weight ratio of fat adoption urethane acrylate is 1: 1.5, and its thickness is 1.0 μm, and refractive index is 1.68.
Embodiment 4
The present embodiment base material thickness is 50 μm;First precoated shet is made up of epoxy acrylate;Second precoated shet is by phenolic aldehyde
Resin, TiO 2 particles composition, refractive index is 1.70;Hard conating prevent adhesion by two that aliphatic polyurethane, particle diameter are 0.2 μm
Silicon oxide particle is formed with light trigger by ultraviolet light polymerization, and its thickness is 2.0 μm;Refractive index matching layers are applied by high index of refraction
Expect by being dried 2 minutes afterwards in 80 DEG C of coatings to being formed, with 400mJ/cm2Light quantity, by ultraviolet irradiate to drying
Coating solidify to form, high index of refraction coating include aliphatic urethane acrylate, five oxidations that particle diameter is 0.10 μm
Two niobium particles, propylene glycol monomethyl ether and light trigger, Zirconia particles are with the weight ratio of six official's aliphatic urethane acrylates
1:1.2, its thickness is 1.5 μm, and refractive index is 1.72.
Embodiment 5
The present embodiment base material thickness is 50 μm;First precoated shet is made up of polyester acrylate;Second precoated shet is by poly- ammonia
Ester, TiO 2 particles composition, refractive index is 1.72;The hard conating that prevents adhesion is by aliphatic urethane acrylate, particle diameter
0.15 μm of silicon dioxide granule is formed with light trigger by ultraviolet light polymerization, and its thickness is 2.0 μm;Refractive index matching layers by
High index of refraction coating by 80 DEG C to formed coatings be dried 2 minutes afterwards, with 400mJ/cm2Light quantity, by ultraviolet
Irradiation solidify to form to dry coating, and high index of refraction coating includes methacrylate, the oxidation that particle diameter is 0.15 μm
Zirconium particle, methyl iso-butyl ketone (MIBK) and light trigger, Zirconia particles are 1 with the weight ratio of methacrylate:1, its thickness 2.0
μm, refractive index is 1.75.
Comparative example 1
This example base material thickness is 125 μm;First precoated shet is made up of polyurethane;Second precoated shet is by polyurethane, titanium dioxide
Titanium particle is constituted, and refractive index is 1.62;Hard conating prevent adhesion by the silicon dioxide granule that aliphatic polyurethane, particle diameter are 0.1 μm
Formed by ultraviolet light polymerization with light trigger, its thickness is 1.0 μm;Refractive index matching layers are by cured coating by right at 80 DEG C
The coating of formation is dried 2 minutes afterwards, with 400mJ/cm2Light quantity, by ultraviolet irradiation dry coating is solidified
Formed, cured coating includes aliphatic urethane acrylate, methyl iso-butyl ketone (MIBK) and light trigger, unlike those described above to be,
Metal oxide particle is not added with, its thickness is 1.0 μm, and refractive index is 1.52.
Comparative example 2
This example base material thickness is 50 μm;First precoated shet is made up of aqueous polyurethane;Second precoated shet by aqueous polyurethane,
TiO 2 particles are constituted, and refractive index is 1.70;Hard conating prevent adhesion by the titanium dioxide that aliphatic polyurethane, particle diameter are 0.2 μm
Silicon particle is formed with light trigger by ultraviolet light polymerization, and its thickness is 1.5 μm;Refractive index matching layers are led to by high index of refraction coating
Cross and be dried 2 minutes afterwards in 80 DEG C of coatings to being formed, with 400mJ/cm2Light quantity, by ultraviolet irradiate to dry painting
Layer is solidify to form, and high index of refraction coating includes six official's aliphatic urethane acrylates, the zirconium oxide that particle diameter is 0.08 μm
The weight ratio of particle and light trigger, Zirconia particles and six official's aliphatic urethane acrylates is 1.5:1, its thickness is
1.5 μm, refractive index is 1.75.Unlike those described above is that metal oxide particle is more than 1 with the weight ratio of ionizing radiation material:1.
The assessment result of the refractive index matching film for being obtained is listed in Table 1 below together with comparative example 1,2 results.
The embodiment of table 1 and comparative example test result
In upper table:Each performance test methods is as follows:
1. pre- priming operation refractive index is measured
Using Filmetrics companies F20 film analysis instrument, using light interference mode pre- priming operation refractive index is determined.
2. mist degree, total light transmittance
Using Japanese electricity color NDH 2000N type mist degree analyzers, determined using light transmission.
3. pencil hardness
Using the pencil hardometers of Elcometer 3086, product pencil hardness is measured.Measurement gimmick:The use of hardness is 1H tri-
Water chestnut pencil, under 500g loadings, marks 5 lines, and then observation hardening membrane coat whether there is scuffing, and is sentenced according to standard once
It is fixed.
【Criterion】
Scratch 0~2 and judge " Pass "
Scratch 3~5 and judge " NG "
4. hardening coat tack
Hundred lattice are marked on hardening coat surface using cross-cut tester, 3M is reused, #600 adhesive tapes carry out viscous glutinous, observation coating table
Emaciated face falls situation.
5. resistance to steel wool scratch
Using the good instrument A20-339 testing machines of resistance to steel wool of Kunshan essence in 200gf/cm2Loading under, using #0000 steel
Velvet rubs back and forth 10 times on hard coating surface, and observation coating whether there is scuffing.
【Criterion】
Scratch<10 judge " Pass "
Hua Shang≤10 judge " NG "
6. refractive index matching layers refractive index
Instrument is coupled using the prisms of Metricon Model 2010, refractive index of the wavelength for 594.0nm is determined.
7. coating thickness determination
Using coating thickness detector ETA-SST thickness measurement equipments, using optical diffraction principle pre- priming operation and refractive index are measured
Coating layer thickness with layer.
8. rainbow line is evaluated
Using three wavelength fluorescent lamps, under black background, by human eye observation, 45 ° to 60 ° of visual angle, detecting distance
50cm~100cm, observes surface rainbow line, and evaluation method is as follows:A is without rainbow line phenomenon;B is have slight rainbow line phenomenon;C
For serious rainbow line phenomenon.
Claims (10)
1. a kind of capacitance plate refractive index matching film, it is characterised in that the capacitance plate refractive index matching film includes base material (10),
The side of the base material (10) two point Do is provided with the first pre- priming operation (20) and the second pre- priming operation (30);In the described first pre- priming operation
(20) hard conating (40) that prevents adhesion is formed on, on the described second pre- priming operation (30) refractive index matching layers (50) is formed;It is described
The absolute value of the refractive index difference of the second pre- priming operation (30) and the refractive index matching layers (50) is below 0.03;Wherein, institute
Stating refractive index matching layers is obtained after coating by high index of refraction coating, and the high index of refraction coating includes at least ionizing radiation
Material, metal oxide particle and light trigger, the metal oxide particle is 1 with the ionizing radiation substance weight ratio:2
~1:1.
2. the capacitance plate refractive index matching film according to claims 1, it is characterised in that the metal oxide particle with
The weight ratio of the ionizing radiation material is 1:1.7~1:1.2.
3. the capacitance plate refractive index matching film according to claims 2, it is characterised in that the metal oxide particle
Particle diameter is 0.01 μm~0.15 μm.
4. the capacitance plate refractive index matching film according to claims 3, it is characterised in that the metal oxide particle is
One or more in zirconium oxide, cerium oxide, five two Niobium of oxidation, titanium dioxide.
5. capacitance plate refractive index matching film according to claim 4, it is characterised in that the refractive index matching layers (50)
Refractive index is 1.65~1.75.
6. capacitance plate refractive index matching film according to claim 5, it is characterised in that the refractive index matching layers (50)
Thickness is 0.5 μm~2.0 μm.
7. capacitance plate refractive index matching film according to claim 6, it is characterised in that the second pre- priming operation (30)
Refractive index is 1.62~1.72.
8. capacitance plate refractive index matching film according to claim 7, it is characterised in that the hard coat layer thickness that prevents adhesion is
1.0 μm~2.0 μm.
9. capacitance plate refractive index matching film according to claim 8, it is characterised in that the described hard conating that prevents adhesion contains
Silicon dioxide granule, the particle diameter of described silicon dioxide granule is 0.1~0.2 μm.
10. a kind of method for preparing the capacitance plate refractive index matching film as described in any one of claim 1-9, it is characterised in that system
It is standby to carry out according to the following steps:
(1), the first pre- priming operation (20) and the second pre- priming operation (30) are formed respectively in the both sides of base material;
(2), the hard conating (40) that prevents adhesion is formed on the described first pre- priming operation (20);
(3), refractive index matching layers (50), the second pre- priming operation (30) and folding are formed on the described second pre- priming operation (30)
The absolute value of refractive index difference of rate matching layer (50) is penetrated below 0.03.
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CN113655907A (en) * | 2021-08-18 | 2021-11-16 | 业成科技(成都)有限公司 | Touch panel, preparation method thereof and electronic device |
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CN103755995A (en) * | 2014-02-10 | 2014-04-30 | 张家港康得新光电材料有限公司 | Anti-adhesion double-faced hardened membrane and preparation method thereof |
CN104004452A (en) * | 2014-06-13 | 2014-08-27 | 张家港康得新光电材料有限公司 | Paint composition and high-refractivity hardened layer |
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JP2013097562A (en) * | 2011-10-31 | 2013-05-20 | Teijin Dupont Films Japan Ltd | Laminate for capacitive touch panel electrode |
CN202887153U (en) * | 2012-11-01 | 2013-04-17 | 合肥乐凯科技产业有限公司 | Transparent hardening-coating film for capacitive touch screen |
CN103755995A (en) * | 2014-02-10 | 2014-04-30 | 张家港康得新光电材料有限公司 | Anti-adhesion double-faced hardened membrane and preparation method thereof |
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