CN109828701A - A kind of capacitive touch screen transparent conductive film and preparation method thereof - Google Patents
A kind of capacitive touch screen transparent conductive film and preparation method thereof Download PDFInfo
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- CN109828701A CN109828701A CN201910200403.3A CN201910200403A CN109828701A CN 109828701 A CN109828701 A CN 109828701A CN 201910200403 A CN201910200403 A CN 201910200403A CN 109828701 A CN109828701 A CN 109828701A
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Abstract
Present invention relates particularly to a kind of capacitive touch screen transparent conductive films and preparation method thereof, the capacitive touch screen is to be prepared via a method which to obtain with transparent conductive film: (1) in the coating fluid of an at least side surface for transparent substrate coating layer of conductive material, after drying, transparent substrate surface forms to obtain conductive coating；(2) circuit pattern and conductive electrode are prepared on the conductive coating of step (1)；(3) in the surface even spread transparent ink of the conductive coating of step (2), after solidification, conductive coating surface forms transparent ink layer, and transparent conductive film is made.The transparent conductive film has the characteristics that transparency height, inoxidizability, water resistance, UV resistant, can be very good to be applied to capacitive touch screen.
Description
Technical field
The present invention relates to the preparation field of conductive adhesive film, in particular to a kind of capacitive touch screen transparent conductive film and its
Preparation method.
Background technique
Transparent conductive film has good electric conductivity, has high transparency light rate in visible light wave wave band, is widely used in putting down
The field of photoelectric devices such as plate shows, thin-film solar cells, sensor, touch screen, liquid crystal display and extending electronics.But
That there are light transmission rates is low for current capacitive touch screen transparent conductive film, mist degree is high, poor water resistance, ultra-violet resistance are poor, easy oxygen
The problem of change.
Summary of the invention
Based on the above issues, it is an object of the present invention to provide a kind of capacitive touch screen transparent conductive films, should
Transparent conductive film has the characteristics that low transparency height, mist degree, water resistance, ultra-violet resistance and oxidative resistance.
To achieve the goals above, technical scheme is as follows:
A kind of capacitive touch screen transparent conductive film is applied including transparent substrate and the conduction for being layered in transparent substrate surface
Layer, circuit pattern and conductive electrode are prepared on the conductive coating, which is characterized in that further include being layered in the conductive coating
The transparent ink layer on surface.
The transparent ink layer is formed after being solidified by transparent ink.
Preferably, the transparent ink preferably has UV resistant, resistance to oxidation, water-fast macromolecule transparent ink；More
Preferably, it is 100,000-100 ten thousand to have UV resistant, resistance to oxidation, a water-fast high score that the transparent ink, which is more preferably molecular weight,
Sub- transparent ink.
Preferably, the transparent ink is to be formed after optical resin solidifies with the modified carboxylic acids curing agent of Long carbon chain
Transparent ink.
Preferably, the transparent substrate is glass, polyethylene terephthalate (PET), polymethyl methacrylate
(PMMA), polytetrafluoroethylene (PTFE) (PTFE), polyvinyl alcohol (PVA), polyimides (PI), polypropylene (PP), polyethylene (PE), poly- carbon
Acid esters (PC), polyurethane (PU), polyethylene naphthalate (PEN), polyether sulfone (PES), polystyrene (PS) or polyethers ether
The copolymer or mixture or laminate of one of ketone (PEEK) or multiple material；It is furthermore preferred that the transparent substrate is
Glass and polyethylene terephthalate (PET).
The second object of the present invention is to provide the preparation method of above-mentioned capacitive touch screen transparent conductive film, including it is as follows
Step:
(1) in the coating fluid of the surface even spread layer of conductive material of transparent substrate, after drying, transparent substrate surface shape
At conductive coating；
(2) circuit pattern and conductive electrode are prepared on the conductive coating of step (1)；
(3) in the surface even spread transparent ink of the conductive coating of step (2), after solidification, conductive coating surface is formed
Transparent ink layer, obtained capacitive touch screen transparent conductive film.
Preferably, step (1) specifically comprises the following steps: the coating in the surface even spread conductive material of transparent substrate
Liquid, then 10-30min is heat-treated at a temperature of transparent substrate is placed in 100-200 DEG C, transparent substrate surface forms conductive coating.
Preferably, the mode of coating described in step (1) is dip-coating, spraying, spin coating or blade coating.
Preferably, the coating thickness of the coating fluid of step (1) described conductive material is 1-100nm, more preferably 5-
10nm。
Preferably, the coating fluid of step (1) described conductive material is prepared by the following method: dispersing conductive material in point
In dispersion liquid, the dispersion liquid is any one or more in the monohydric alcohol of water, C1-C6；The coating fluid of the conductive material
Concentration is 0.5-5mg/mL.
Preferably, conductive material described in step (1) is tin indium oxide, nano metal particles, nano metal line or nanometer
Any one in metal grill.
Preferably, the nano metal particles be nano Au particle, nano silver particles, nanometer copper particle, nano-iron particle,
Nanometer nickel particles, nanometer cobalt particle or alloy nano metallic and its mixing material.
Preferably, the nano metal line be gold nanowire, nano-silver thread, NANO CRYSTAL COPPER WIRE, nanometer iron wire, nanometer nickel wire,
Nanometer cobalt line or alloy nano metal wire and its mixing material.
Preferably, the nano metal grid material is gold, silver, copper, iron, nickel, cobalt or its arbitrary proportion alloy.
Preferably, step (3) specifically comprises the following steps: the surface even spread transparent ink in conductive coating, then will
Conductive coating is heat-treated 10-30min at a temperature of being placed in 100-200 DEG C, conductive coating surface forms transparent ink layer, and capacitor is made
Formula touch screen transparent conductive film.
Preferably, the coating thickness of step (3) described transparent ink is 1-10um, preferably 3-5um.
Preferably, the mode of coating described in step (3) is dip-coating, spraying, spin coating or blade coating.
Advantageous effects of the invention:
Transparent conductive film provided by the invention use three-layer composite structure, have transparency height, resistance to oxidation, UV resistant,
Water-fast excellent properties can be advantageously applied in capacitive touch screen, long service life and not vulnerable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of transparent conductive film of the invention, in which: 1- transparent substrate；2- conductive coating；3- is transparent
Ink layer.
Specific embodiment
Detailed description of the preferred embodiments with reference to the accompanying drawing.
As shown in Figure 1, a kind of capacitive touch screen transparent conductive film, including transparent substrate 1 and it is layered in transparent substrate 1
The conductive coating 2 on surface is prepared with circuit pattern and conductive electrode on the conductive coating 2, which is characterized in that further includes stacking
Transparent ink layer 3 on 2 surface of conductive coating.
The transparent ink layer 3 is formed after being solidified by transparent ink, it is preferred that the transparent ink is resistance to ultraviolet to have
Line, resistance to oxidation, water-fast macromolecule transparent ink.It is furthermore preferred that the transparent ink is the tool that molecular weight is 100,000-100 ten thousand
Standby UV resistant, resistance to oxidation, water-fast macromolecule transparent ink.The transparent ink can pass through the normal of those skilled in the art
Regulation Preparation Method is prepared, or passes through commercially available acquisition, it is preferred that the transparent ink is by optical resin and long carbon
It is formed after chain modified carboxylic acids curing agent solidification, but not limited to this.Its middle-molecular-weihydroxyethyl refers to institute used for 100,000-100 ten thousand
There is the transparent ink of type all to need to meet the requirement.
There is no particular restriction for the transparent substrate 1, and can be any routine can be applied to base as transparent conductive film
Material, it is preferred that the transparent substrate 1 is polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), poly- four
Vinyl fluoride (PTFE), polyimides (PI), polypropylene (PP), polyethylene (PE), polycarbonate (PC), is gathered polyvinyl alcohol (PVA)
The tool such as urethane (PU), polyethylene naphthalate (PEN), polyether sulfone (PES), polystyrene (PS) or polyether-ether-ketone (PEEK)
The copolymer or mixture or laminate of one of plastics or glass of flexible feature or multiple material, but be not limited only to
This.It is furthermore preferred that the transparent substrate 1 is glass or polyethylene terephthalate (PET).
The preparation method of above-mentioned capacitive touch screen transparent conductive film, includes the following steps:
(1) in the coating fluid of the surface even spread conductive material of transparent substrate 1, after drying, transparent substrate surface is formed
Conductive coating 2；
(2) to preparing circuit pattern and conductive electrode on conductive coating 2 described in step (1)；
(3) to 2 surface even spread transparent ink of conductive coating described in step (2), after solidification, conductive coating surface shape
At transparent ink layer 3, obtained capacitive touch screen transparent conductive film.
Preferably, step (1) specifically comprises the following steps: the painting in the surface even spread conductive material of transparent substrate 1
Cloth liquid, then 10-30min is heat-treated at a temperature of transparent substrate 1 is placed in 100-200 DEG C, 1 surface of transparent substrate forms conductive coating
3。
Preferably, the mode of coating described in step (1) is dip-coating, spraying, spin coating or blade coating；The mode of the coating is
When spin coating, the rate of spin coating is preferably 50-200rpm/s；When the mode of the coating is blade coating, knifing stick is preferably 1-
100nm；When the mode of the coating is spraying, spray rate is preferably 0.5-20mL/min, the preferably circular tip-like of nozzle,
Internal diameter is preferably 1-3mm, and outer diameter is preferably 2-5mm, and the distance between nozzle and transparent substrate are preferably 10-30mm, spraying pressure
The preferred 20-50kv of power.
Preferably, the coating thickness of the coating fluid of step (1) described conductive material is 1-100nm, preferably 5-10nm.
The coating fluid of conductive material described in step (1) does not have special provision, and can be any routine can be applied to conduct
The coating fluid of the conductive material of transparent conductive film can be prepared by the customary preparation methods of those skilled in the art
Arrive, for example, disperse commercially available conductive material in dispersion liquid, dispersion liquid can be for water, C1-C6 monohydric alcohol in it is any
One or more, the concentration of the coating fluid of the conductive material is 0.5-5mg/mL, but not limited to this, it can also be obtained by commercially available
?.
Preferably, conductive material described in step (1) is tin indium oxide, nano metal particles, nano metal line or nanometer
Any one in metal grill.
Preferably, the nano metal particles be nano Au particle, nano silver particles, nanometer copper particle, nano-iron particle,
Nanometer nickel particles, nanometer cobalt particle or alloy nano metallic and its mixing material.
Preferably, the nano metal line be gold nanowire, nano-silver thread, NANO CRYSTAL COPPER WIRE, nanometer iron wire, nanometer nickel wire,
Nanometer cobalt line or alloy nano metal wire and its mixing material.
Preferably, the nano metal grid material is gold, silver, copper, iron, nickel, cobalt or its arbitrary proportion alloy.
Transparent substrate 1 described in step (1) can be without surface treatment, can also be using the normal of those skilled in the art
Rule method carries out surface clean, and then improves the surface state of transparent substrate, and coating fluid is in transparent substrate in raising subsequent step
The spreadability on surface is conducive to the surface that coating fluid is uniformly coated on transparent substrate.
There is no particular restriction for transparent substrate 1 described in step (1), and can be any routine can be applied to as electrically conducting transparent
The substrate of film, it is preferred that the transparent substrate 1 is polyethylene terephthalate (PET), polymethyl methacrylate
(PMMA), polytetrafluoroethylene (PTFE) (PTFE), polyvinyl alcohol (PVA), polyimides (PI), polypropylene (PP), polyethylene (PE), poly- carbon
Acid esters (PC), polyurethane (PU), polyethylene naphthalate (PEN), polyether sulfone (PES), polystyrene (PS) or polyethers ether
Ketone (PEEK) etc. has the copolymer or mixture or lamination of one of plastics or glass of flexible characteristic or multiple material
Object, but it is not limited only to this.It is furthermore preferred that the transparent substrate 1 is glass or polyethylene terephthalate (PET).
Preferably, step (3) specifically comprises the following steps: the outer surface even spread transparent ink in conductive coating 2, then
10-30min is heat-treated at a temperature of conductive coating 2 is placed in 100-200 DEG C, 2 surface of conductive coating forms transparent ink layer 3, system
Obtain capacitive touch screen transparent conductive film.
Preferably, the coating thickness of step (3) described transparent ink is 1-10um, preferably 3-5um.
Preferably, the mode of coating described in step (3) is dip-coating, spraying, spin coating or blade coating；The mode of the coating is
When spin coating, the rate of spin coating is preferably 50-200rpm/s；When the mode of the coating is blade coating, knifing stick is preferably 1-10 μm；
When the mode of the coating is spraying, spray rate is preferably 0.5-20mL/min, the preferably circular tip-like of nozzle, and internal diameter is excellent
It is selected as 1-3mm, outer diameter is preferably 2-5mm, and the distance between nozzle and conductive coating are preferably 10-30mm, and spray pressure is preferred
20-50kv。
Transparent ink layer 3 described in step (3) is formed after being solidified by transparent ink, and the transparent ink preferably has resistance to
Ultraviolet light, resistance to oxidation, water-fast macromolecule transparent ink.The transparent ink is more preferably the tool that molecular weight is 100,000-100 ten thousand
Standby UV resistant, resistance to oxidation, water-fast macromolecule transparent ink.The transparent ink can pass through the normal of those skilled in the art
Regulation Preparation Method is prepared, or passes through commercially available acquisition, the preferably modified carboxylic acids of optical resin and Long carbon chain
The transparent ink that curing agent is formed after solidifying, but not limited to this.Its middle-molecular-weihydroxyethyl refers to used all kinds for 100,000-100 ten thousand
The transparent ink of class all needs to meet the requirement.
Above-mentioned transparent conductive film is high with transparency, mist degree is low, water-fast, resistance to oxidation, ultra-violet resistance, can answer well
For in capacitive touch screen.
A specific embodiment of the invention is further described below with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described range.
Embodiment 1:
A kind of transparent conductive film, including PET film are layered in the conductive coating on the surface of PET film, the conductive coating
On be prepared with circuit pattern and conductive electrode, and be layered in the transparent ink layer on conductive coating surface, make by the following method
It is standby:
(1) ethanol solution for taking 1mL1mol/L nano silver is existed the ethanol solution blade coating of nano silver with the knifing stick of 10nm
The surface of PET film, coating layer thickness 10nm, then transparent substrate is placed at a temperature of 100 DEG C and is heat-treated 10min, in transparent base
Material surface forms conductive coating；(2) circuit pattern and conductive electrode are prepared on conductive coating；(3) 1mL macromolecule clean oil is taken
Ink is scratched macromolecule transparent ink on the surface of conductive coating with 5 μm of knifing sticks, and coating layer thickness is 5 μm, then conduction is applied
10min is heat-treated at a temperature of being placed on 100 DEG C, conductive coating surface forms transparent ink layer after solidification, and transparent conductive film is made.
The macromolecule transparent ink is the carboxylic that the optical resin that molecular weight is 100,000-100 ten thousand and Long carbon chain are modified
The transparent ink that acids curing agent is formed after solidifying.
Embodiment 2:
A kind of transparent conductive film, including PVC film are layered in the conductive coating on the surface of PVC film, the conductive coating
On be prepared with circuit pattern and conductive electrode, and the macromolecule transparent ink layer on the surface of conductive layer is layered in, by following
Method preparation:
(1) ethanol solution of nano-silver thread is spin-coated on PVC film by the ethanol solution for taking 1mL1mol/L nano-silver thread
Surface, revolving speed 100rpm/s, coating layer thickness 10nm, then transparent substrate is placed at a temperature of 100 DEG C and is heat-treated 10min,
Transparent substrate surface forms conductive coating；(2) circuit pattern and conductive electrode are prepared on conductive coating；(3) 1mL macromolecule is taken
Macromolecule transparent ink is spin-coated on the surface of PVC film, revolving speed 100rpm/s by transparent ink, and coating layer thickness is 5 μm, then
Conductive coating is placed at a temperature of 100 DEG C and is heat-treated 10min, conductive coating surface forms transparent ink layer after solidification, is made saturating
Bright conductive film.
The macromolecule transparent ink is the transparent of the model HP-1316F of Taiyuan Hai Bo new material Co., Ltd production
Ink.
Embodiment 3:
A kind of transparent conductive film, including PVC film are layered in the conductive coating on the surface of PVC film, the conductive coating
On be prepared with circuit pattern and conductive electrode, and the macromolecule transparent ink layer on the surface of conductive layer is layered in, by following
Method preparation:
(1) ethanol solution of nano silver is sprayed on the table of PVC film by the ethanol solution for taking 1mL 1mol/L nano-silver thread
Face, spray rate 10mL/min, nozzle are round tip-like, internal diameter 2mm, outer diameter 5mm, between nozzle and transparent substrate
Distance be 20mm, spray pressure 30kv, coating layer thickness 10nm, then transparent substrate is placed at a temperature of 100 DEG C and is heat-treated
10min forms conductive coating in transparent substrate surface；(2) circuit pattern and conductive electrode are prepared on conductive coating；(3) it takes
Macromolecule transparent ink is sprayed on the surface of conductive coating, spray rate 10mL/min, spray by 1mL macromolecule transparent ink
Mouth is round tip-like, and internal diameter 2mm, outer diameter 5mm, the distance between nozzle and conductive coating are 20mm, and spray pressure is
30kv, coating layer thickness is 5 μm, then conductive coating is placed at a temperature of 100 DEG C and is heat-treated 10min, conductive coating surface after solidification
Transparent ink layer is formed, transparent conductive film is made.
The macromolecule transparent ink is the transparent of the model HP-1316F of Taiyuan Hai Bo new material Co., Ltd production
Ink.
Embodiment 4:
A kind of transparent conductive film, including glass are layered in the conductive coating on the surface of glass, prepare on the conductive coating
There are circuit pattern and conductive electrode, and be layered in the macromolecule transparent ink layer on the surface of conductive layer, makes by the following method
It is standby:
(1) ethanol solution for taking 1mL 1mol/L gold nanowire, with the knifing stick of 10nm by the ethanol solution of gold nanowire
Blade coating is in the surface of glass, coating layer thickness 10nm, then transparent substrate is placed at a temperature of 100 DEG C and is heat-treated 10min, transparent
Substrate surface forms conductive coating；(2) circuit pattern and conductive electrode are prepared on conductive coating；(3) take 1mL macromolecule transparent
Ink is scratched macromolecule transparent ink on the surface of conductive coating with 5 μm of knifing sticks, and coating layer thickness is 5 μm, then will be conductive
Painting is heat-treated 10min at a temperature of being placed on 100 DEG C, conductive coating surface forms transparent ink layer after solidification, and electrically conducting transparent is made
Film.
The macromolecule transparent ink is the transparent of the model HP-1316F of Taiyuan Hai Bo new material Co., Ltd production
Ink.
Embodiment 5:
A kind of transparent conductive film, including glass are layered in the conductive coating of glass surface, are prepared on the conductive coating
Circuit pattern and conductive electrode, and it is layered in the macromolecule transparent ink layer of conductive layer surface, it is prepared by the following method:
(1) ethanol solution for taking 1mL 1mol/L nanogold is scratched the ethanol solution of nanogold with the knifing stick of 10nm
On the surface of glass, coating layer thickness 10nm, then transparent substrate is placed at a temperature of 100 DEG C and is heat-treated 10min, in transparent substrate
Surface forms conductive coating；(2) circuit pattern and conductive electrode are prepared on conductive coating；(3) 1mL macromolecule clean oil is taken
Ink is scratched macromolecule transparent ink on the surface of conductive coating with 5 μm of knifing sticks, and coating layer thickness is 5 μm, then conduction is applied
10min is heat-treated at a temperature of being placed on 100 DEG C, conductive coating surface forms transparent ink layer after solidification, and transparent conductive film is made.
The macromolecule transparent ink is the transparent of the model HP-1316F of Taiyuan Hai Bo new material Co., Ltd production
Ink.
Comparative example 1
A kind of transparent conductive film, the conductive coating including PET film and the surface for being layered in PET film, by following
Method preparation: taking the ethanol solution of 1mL1mol/L nano-silver thread, is scratched the ethanol solution of nano-silver thread with the knifing stick of 10nm
On the surface of PET film, coating layer thickness 10nm, then transparent substrate is placed at a temperature of 100 DEG C and is heat-treated 10min, after solidification
Transparent substrate surface forms conductive coating, and transparent conductive film is made.
Comparative example 2
A kind of transparent conductive film, the conductive coating including PET film and the surface for being layered in PET film, by following
Method preparation: taking the ethanol solution of 1mL 1mol/L nano silver, and the ethanol solution blade coating of nano silver is existed with the knifing stick of 10nm
The surface of glass, coating layer thickness 10nm, then transparent substrate is placed at a temperature of 100 DEG C and is heat-treated 10min, transparent base after solidification
Material surface forms conductive coating, and transparent conductive film is made.
Embodiment 6
By the electrically conducting transparent film properties test of embodiment 1-5 and comparative example 1-2, test data is as shown in table 1.
1, light transmittance and mist degree test: according to " GB2410-80 transparent plastic light transmittance and haze test method ", using saturating
Light rate/mist degree tester (trade name: WGT-S is produced by Chinese Shanghai precision instrument factory) measures the light transmittance (%) of sample
And haze value (%).
2, according to standard " GB/T 1733-1993 paint film water resistance test method ", 10 water resistance test: are placed in 100 DEG C of water
It, observation transparent conductive film variation.
3, oxidative resistance is tested: by transparent conductive film dry 30 minutes in 100 DEG C of baking ovens, then after being placed at room temperature for 2 hours,
It is placed in the climatic chamber that 50 DEG C are 90% with humidity, it is currently anti-oxidant etc. for not occurring oxidation spots in specified time
Grade.1: less than 8h of grade；2: less than 16h of grade；Grade 3: less than for 24 hours；Class 4: less than 32h；Class 5: less than 40h；Grade
6: less than 48h；7: less than 56h of grade；8: less than 64h of grade；9: less than 72h of grade.
4, UV resistant is tested: according to " GB/T22771-2008 printed matter and printing ink light aging resisting are tested and commented
Valence ".
Table 1: performance test data
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 | |
| Light transmittance | 93 | 96 | 95 | 98 | 94 | 91 | 90 |
| Mist degree | 1.8 | 1.2 | 1.3 | 1 | 1.6 | 2 | 2.5 |
| Anti-oxidant grade | 9 | 9 | 9 | 9 | 9 | 6 | 5 |
| Water resistance | It is unchanged | It is unchanged | It is unchanged | It is unchanged | It is unchanged | Blistering | Blistering |
| Rating for light fastness | Greater than 7 grades | Greater than 7 grades | Greater than 7 grades | Greater than 7 grades | Greater than 7 grades | 5 grades | 4 grades |
Transparent conductive film of the invention has the excellent spy such as low transparency height, mist degree, resistance to oxidation, UV resistant, water-fast
Property, it can be advantageously applied in capacitive touch screen.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of capacitive touch screen transparent conductive film is applied including transparent substrate and the conduction for being layered in transparent substrate surface
Layer, circuit pattern and conductive electrode are prepared on the conductive coating, which is characterized in that further include being layered in the conductive coating
The transparent ink layer on surface.
2. capacitive touch screen transparent conductive film according to claim 1, which is characterized in that the transparent ink layer by
It is formed after transparent ink solidification, the transparent ink is to have UV resistant, resistance to oxidation, water-fast macromolecule transparent ink.
3. capacitive touch screen transparent conductive film according to claim 2, which is characterized in that the transparent ink is light
It is formed after learning the epoxy resin carboxylic acids curing agent solidification modified with Long carbon chain.
4. capacitive touch screen transparent conductive film according to claim 1, which is characterized in that the transparent substrate is glass
Glass, polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polytetrafluoroethylene (PTFE) (PTFE), polyvinyl alcohol
(PVA), polyimides (PI), polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyurethane (PU), poly- naphthalenedicarboxylic acid second
The copolymerization of one of diol ester (PEN), polyether sulfone (PES), polystyrene (PS) or polyether-ether-ketone (PEEK) or multiple material
Object or mixture or laminate.
5. the preparation method of capacitive touch screen transparent conductive film according to any one of claims 1-4, feature
Be, include the following steps: (1) in the coating fluid of the surface even spread layer of conductive material of transparent substrate, it is transparent after drying
Substrate surface forms conductive coating；(2) circuit pattern and conductive electrode are prepared on the conductive coating of step (1)；(3)
In the surface even spread transparent ink of the conductive coating of step (2), after solidification, conductive coating surface forms transparent ink layer,
Obtained capacitive touch screen transparent conductive film.
6. preparation method according to claim 5, which is characterized in that drying temperature described in step (1) is 100-200
DEG C, drying time 10-30min；Solidification temperature described in step (2) is 100-200 DEG C, curing time 10-30min.
7. preparation method according to claim 5, which is characterized in that the mode of coating described in step (1) is dip-coating, spray
Apply, spin coating or blade coating in any one；The mode of coating described in step (2) is appointing in dip-coating, spraying, spin coating or blade coating
It anticipates one kind.
8. preparation method according to claim 5, which is characterized in that the painting of the coating fluid of step (1) described conductive material
Cloth is with a thickness of 1-100nm；The coating thickness of step (3) described transparent ink is 1-10um.
9. preparation method according to claim 5, which is characterized in that conductive material described in step (1) be tin indium oxide,
Any one in nano metal particles, nano metal line or nano metal grid.
10. preparation method according to claim 9, which is characterized in that the nano metal particles are nano Au particle, receive
Rice silver particles, nanometer copper particle, nano-iron particle, nanometer nickel particles, nanometer cobalt particle or alloy nano metallic and its mixed
Condensation material；The nano metal line is gold nanowire, nano-silver thread, NANO CRYSTAL COPPER WIRE, nanometer iron wire, nanometer nickel wire, nanometer cobalt line
Or alloy nano metal wire and its mixing material；The nano metal grid material is gold, silver, copper, iron, nickel, cobalt or it is any
Ratio alloy.
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| CN110544554A (en) * | 2019-08-15 | 2019-12-06 | 深圳市华科创智技术有限公司 | Disordered co-stacked transparent conductive film and preparation method thereof |
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