CN110045876A - A kind of composite double layer ultrathin flexible touch screen sensor and preparation method thereof - Google Patents
A kind of composite double layer ultrathin flexible touch screen sensor and preparation method thereof Download PDFInfo
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- CN110045876A CN110045876A CN201910385760.1A CN201910385760A CN110045876A CN 110045876 A CN110045876 A CN 110045876A CN 201910385760 A CN201910385760 A CN 201910385760A CN 110045876 A CN110045876 A CN 110045876A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Abstract
The present invention relates to Flexible Displays sensor field, a kind of composite double layer ultrathin flexible touch screen sensor and preparation method thereof is provided, for solving the problems, such as that the bent number of flexible display screen is few.A kind of composite double layer ultrathin flexible touch screen sensor provided by the invention, the ultra-thin touch screen sensor of composite double layer includes first sensor and second sensor, and the preparation method includes: to be coated with photocuring macromolecule on the first sensor that same substrate connects and remove solvent to obtain thick macromolecule layer；By second sensor with photocuring is carried out after the fitting of thick macromolecule layer, the solid-state polymer layer with the connection of the first and second sensors is obtained；First sensor is separated with substrate, obtains composite double layer ultrathin flexible touch screen sensor.Photocuring macromolecule can accomplish it is very thin, realize touch-control conduction picture and text, conductive network build-in among photocuring macromolecule, it is integrated with flexible parent metal, to improve screen body bending resistance, realize super soft mechanical performance.
Description
Technical field
The present invention relates to Flexible Displays sensor fields, and in particular to a kind of composite double layer ultrathin flexible touch screen sensor
And preparation method thereof.
Background technique
With the market expectations such as wearable device and Flexible Displays and demand, flexible transparent conducting film and based on it
Flexible touch technology the development of blowout will occur.But touch-control screen material used is mainly based on ITO currently on the market
Transparent conductive film, more crisp since it is ceramic material, shortcoming is flexible, so it is impossible to meet wearable devices etc. to flexibility
The requirement of touch-control.Main development is currently on the market with carbon nanotube, and graphene, silver nanowires, metal grill etc. is conductive material
Transparent conductive film.Wherein there are high conductivity, good light transmittance and low preparation cost, market prospects with silver nanowires again
It is the most good.Popular is mainly by silver wire in a manner of silver nanowires electrically conducting transparent film preparation flexibility touch screen currently on the market
Formula is coated on flexible parent metal, such as PET, PEN, PC, prepares flexible transparent conducting film, then in these flexible membrane materials
Function element is prepared by laser ablation or yellow light process processing.
Common silver paste conductive network is prepared as laser etching process, and the technique is due to laser facula and aligning accuracy
Limitation, the touch sensing border width for being finally prepared to type are wider, it is difficult to realize current mobile electronic device, such as smart phone
Etc. narrow frames application requirement.And yellow light is used to etch silver paste technique, then touch sensing border width can be largely reduced,
Preferably adapt to the technical application requirement of the marketization.
Common Double-layer flexible touch sensing structure is generally PFF structure, i.e., respectively in two flexible conductive films
Touch-control picture and text are formed, then two films are bonded with optical cement, are finally fitted on flexible cover plate.This mode need into
Row optics glue laminating, structure is complicated, and thickness is thicker, and cost is also relatively high, is in addition bonded using optical cement, machine
Tool performance and flexible conductive film substrate mismatch, and cause the deformation such as folding line bad in the process of bending.
Summary of the invention
Present invention solves the technical problem that the problem few for the bent number of flexible display screen, it is super to provide a kind of composite double layer
Thin flexibility touch screen sensor and preparation method thereof.
In order to solve the above technical problem, the present invention provides technical solution are as follows:
A kind of preparation method of composite double layer ultrathin flexible touch screen sensor, the ultra-thin touch screen sensor packet of composite double layer
First sensor and second sensor are included, the preparation method includes: the Tu Buguang on the first sensor that same substrate connects
Solidify macromolecule and remove solvent and obtains thick macromolecule layer；It is carried out after second sensor is bonded with thick macromolecule layer
Photocuring obtains the solid-state polymer layer with the connection of the first and second sensors；First sensor is separated with substrate, is answered
Close the double-deck ultrathin flexible touch screen sensor.
First sensor and second sensor are integrated on photocuring macromolecule using photocuring macromolecule, it is solid with the time
Change macromolecule and second sensor flexible forms one, is prepared into ultrathin flexible touch screen.
Photocuring macromolecule can be accomplished very thin；Two sensor build-ins of realization are soft among photocuring macromolecule simultaneously
Property substrate be integrated in one, to improve screen body bending resistance, realize super soft mechanical performance.
Preferably, the first sensor the preparation method comprises the following steps: pre-processed to substrate, adjust surface tension；It is passing through
Pretreated substrate coating conductive nano dispersion liquid is crossed, the dispersing agent removed in dispersion liquid obtains conductive nano network, to described
Conductive nano network is etched；Contain the nano structural conductive material of mass percent 0.1 ~ 1% in the dispersion liquid；It is passing through
Silver paste figure line is printed on overetched conductive nano network, forms first after removing the solvent in silver paste figure line, development, heat treatment
Silver paste electric network obtains the first sensor of same substrate connection.First sensor, modified substrate are prepared on the substrate of rigidity
It is also used as the substrate of composite double layer ultrathin flexible touch screen sensor.
Preferably, the second sensor the preparation method comprises the following steps: be heat-treated to flexible silver nanowires film, adjust thin
Membrane stress；Silver paste figure line is printed after being etched to the conductive network on flexible silver nanowires film, is removed in silver paste figure line
The second silver paste electric network is formed after solvent, development, heat treatment, obtains second sensor.Flexible silver nanowires film has excellent
Electric conductivity, excellent translucency, flexible resistance.
Preferably, the photocuring macromolecule is grouped as by each group of following mass percent: photoinitiator 0.2 ~ 5% changes
Property urethane acrylate 25 ~ 35%, the multi-functional acrylate 10 ~ 30% containing triazine ring and dipentaerythritol polyfunctionality third
Olefin(e) acid ester 15 ~ 45%.Photocuring macromolecule layer is the necessary component for connecting two sensors, using modified urethane acrylate
And the acrylate of different functional groups can effectively improve the stability of two sensors connection.
Preferably, the photocuring high-molecular optical solidifies macromolecule and is grouped as by each group of following mass percent: light draws
Send out agent 0.2 ~ 5%, modified urethane acrylate 25 ~ 35%, inorganic nano-filler 1 ~ 10%, coupling agent 0.5 ~ 2%, containing triazine ring
Multi-functional acrylate 10 ~ 30% and dipentaerythritol polyfunctional acrylic ester 15 ~ 45%.Nanometer is added in curing agent to fill out
The stability that two sensors connect can be improved with coupling agent in material.
Preferably, the flexible silver nanowires film is the optical substrate equipped with conductive network, and the optical substrate is
The one of which of PET, PI, COP, light transmittance >=90% of the optical substrate.It is main for being arranged in optical substrate with silver nanowires
The conductive network of ingredient, can be improved flexibility.
Preferably, the temperature used that is heat-treated is 120 ~ 200 DEG C.Heat treatment is carried out between 120 ~ 200 DEG C can be with
The effective stress for adjusting film.
Preferably, yellow light processing is carried out before the development, the yellow light processing is to carry out in the environment of yellow light to silver paste
The processing of ultraviolet light pattern exposure, the development are unexposed solid to carry out cleaning removal to silver paste using 3 ~ 7% sodium bicarbonate solutions
The silver paste of change, the heat treatment are hot-air oven or 120 ~ 140 DEG C of IR continuous tunnel furnace of baking.Handling using yellow light can be with larger journey
The width of the reduction frame of degree.
Preferably, the sheet resistance of the silver nanowires film is 50-100 Ω/sq, and the conductive network sheet resistance is 50-100
Ω/sq.The resistance of control conductive nano network and silver nanowires film can guarantee the performance of sensor.
A kind of composite double layer ultrathin flexible touch screen sensor, the composite double layer prepared according to above-mentioned preparation method are ultra-thin soft
Property touch screen sensor.
Compared with prior art, the device have the advantages that are as follows: photocuring macromolecule can accomplish it is very thin, realize touching
Conduct electrograph text, conductive network build-in are integrated with flexible parent metal among photocuring macromolecule, to improve screen body bending resistance
Folding endurance energy realizes super soft mechanical performance；Manufactured sensor is bent 100,000 times or more.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of composite double layer ultrathin flexible touch screen transducer production method.
Fig. 2 is a kind of another flow diagram of composite double layer ultrathin flexible touch screen transducer production method.
Fig. 3 is a kind of schematic diagram of composite double layer ultrathin flexible touch screen sensor.
Fig. 4 is the schematic diagram of first sensor.
Fig. 5 is the schematic diagram of second sensor.
Specific embodiment
Following implementation column is to further explanation of the invention, is not limitation of the present invention.
Embodiment 1
A kind of preparation method of composite double layer ultrathin flexible touch screen sensor, as shown in Figure 1, the ultra-thin touch-control of the composite double layer
Screen sensor includes first sensor and second sensor, and the preparation method includes: the first sensing connected in same substrate
It is coated with photocuring macromolecule on device and removes solvent and obtains thick macromolecule layer；By second sensor with thick macromolecule layer
Photocuring is carried out after fitting, obtains the solid-state polymer layer with the connection of the first and second sensors；By the same substrate of first sensor
Separation, obtains composite double layer ultrathin flexible touch screen sensor.
First sensor and second sensor are integrated on photocuring macromolecule using photocuring macromolecule, it is solid with the time
Change macromolecule and second sensor flexible forms one, is prepared into ultrathin flexible touch screen.
Photocuring macromolecule can be accomplished very thin；Two sensor build-ins of realization are soft among photocuring macromolecule simultaneously
Property substrate it is integrated, to improve screen body bending resistance, realize super soft mechanical performance.
Embodiment 2
A kind of preparation method of composite double layer ultrathin flexible touch screen sensor, as shown in Fig. 2, the ultra-thin touch-control of the composite double layer
Screen sensor includes first sensor and second sensor, and the preparation method includes: the first sensing connected in same substrate
It is coated with photocuring macromolecule on device and removes solvent and obtains thick macromolecule layer；By second sensor with thick macromolecule layer
Photocuring is carried out after fitting, obtains the solid-state polymer layer with the connection of the first and second sensors；By the same substrate of first sensor
Separation, obtains composite double layer ultrathin flexible touch screen sensor.The first sensor the preparation method comprises the following steps: being carried out to substrate pre-
Processing adjusts surface tension；It is being coated with conductive nano dispersion liquid by pretreated substrate, the dispersing agent removed in dispersion liquid obtains
To conductive nano network, the conductive nano network is etched；Containing mass percent 0.1 ~ 1% in the dispersion liquid
Nano structural conductive material；Through on overetched conductive nano network print silver paste figure line, remove silver paste figure line in solvent,
The first silver paste electric network is formed after development, heat treatment, obtains the first sensor of same substrate connection.The system of the second sensor
Preparation Method are as follows: flexible silver nanowires film is heat-treated, membrane stress is adjusted；To the conduction on flexible silver nanowires film
Network prints silver paste figure line after being etched, and forms the second silver paste power grid after removing the solvent in silver paste figure line, development, heat treatment
Network obtains second sensor.The photocuring macromolecule is grouped as by each group of following mass percent: photoinitiator 0.2 ~
5%, modified urethane acrylate 25 ~ 35%, the multi-functional acrylate 10 ~ 30% containing triazine ring and the more officials of dipentaerythritol
Energy degree acrylate 15 ~ 45%.The flexibility silver nanowires film is the optical substrate equipped with conductive network, the optical substrate
For the one of which of PET, PI, COP, light transmittance >=90% of the optical substrate.It is described be heat-treated the temperature that uses for 120 ~
200℃.Yellow light processing is carried out before the development, the yellow light processing is to carry out ultraviolet light pattern to silver paste in the environment of yellow light
The processing of exposure, the development remove unexposed cured silver paste to carry out cleaning to silver paste using 3 ~ 7% sodium bicarbonate solutions,
The heat treatment is hot-air oven or 120 ~ 140 DEG C of IR continuous tunnel furnace of baking.The sheet resistance of the silver nanowires film is 50-
100 Ω/sq, the conductive network sheet resistance are 50-100 Ω/sq.
First sensor and second sensor are integrated on photocuring macromolecule using photocuring macromolecule, it is solid with the time
Change macromolecule and second sensor flexible forms one, is prepared into ultrathin flexible touch screen.
Photocuring macromolecule can be accomplished very thin；Two sensor build-ins of realization are soft among photocuring macromolecule simultaneously
Property substrate it is integrated, to improve screen body bending resistance, realize super soft mechanical performance.The is prepared on the substrate of rigidity
One sensor, modified substrate are also used as the substrate of composite double layer ultrathin flexible touch screen sensor.Flexible silver nanowires
Film has excellent electric conductivity, excellent translucency, flexible resistance.Nanofiller and coupling agent are added in curing agent can be with
Improve the stability of two sensors connection.It is arranged in optical substrate with silver nanowires conductive network as main component, it can be with
Improve flexibility.Heat treatment is carried out between 120 ~ 200 DEG C can effectively adjust the stress of film.Handling using yellow light can be with
Largely reduce the width of frame.The resistance of control conductive nano network and silver nanowires film can guarantee sensor
Performance.
Embodiment 3
Embodiment 3 with embodiment 1 the difference is that, the photocuring macromolecule by following mass percent each group be grouped
At: photoinitiator 0.2 ~ 5%, modified urethane acrylate 25 ~ 35%, 10 ~ 30% He of multi-functional acrylate containing triazine ring
Dipentaerythritol polyfunctional acrylic ester 15 ~ 45%.
Photocuring macromolecule layer is the necessary component for connecting two sensors, using modified urethane acrylate and difference
The acrylate of functional group can effectively improve the stability of two sensors connection.
Embodiment 4
A kind of composite double layer ultrathin flexible touch screen sensor, as shown in Fig. 3 ~ 5, according to the Composite Double of above-mentioned preparation method preparation
Layer ultrathin flexible touch screen sensor.Including first sensor 1 and second sensor 2, the first sensor 1 is led including nanometer
Electric network 11, the first silver paste conductive network 12, the conductive nano network 11 are connected with substrate, and the second sensor includes soft
Property silver nanowires film 21, conductive network 22, the second silver paste conductive network 23.The first sensor 1 and second sensor 2 are logical
The connection of solid-state polymer layer 3 is crossed, the solid-state polymer layer 3 is formed after photocuring by thick macromolecule layer 31.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and above embodiments are not to limit this
The scope of the patents of invention, all equivalence enforcements or change without departing from carried out by the present invention, is intended to be limited solely by the scope of the patents of this case.
Claims (10)
1. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor, which is characterized in that the composite double layer is ultra-thin
Touch screen sensor includes first sensor and second sensor, and the preparation method includes: first connected in same substrate
It is coated with photocuring macromolecule on sensor and removes solvent and obtains thick macromolecule layer；By second sensor with thick high score
Photocuring is carried out after sublayer fitting, obtains the solid-state polymer layer with the connection of the first and second sensors；First sensor is same
Substrate separation, obtains composite double layer ultrathin flexible touch screen sensor.
2. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor according to claim 1, feature exist
In, the first sensor the preparation method comprises the following steps: pre-process to substrate, surface tension is adjusted；Passing through pretreated base
Material is coated with conductive nano dispersion liquid, and the dispersing agent removed in dispersion liquid obtains conductive nano network, to the conductive nano network
It is etched；Contain the nano structural conductive material of mass percent 0.1 ~ 1% in the dispersion liquid；Through overetched nanometer
Silver paste figure line is printed on conductive network, forms the first silver paste electric network after removing the solvent in silver paste figure line, development, heat treatment,
Obtain the first sensor of same substrate connection.
3. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor according to claim 1, feature exist
In, the second sensor the preparation method comprises the following steps: be heat-treated to flexible silver nanowires film, membrane stress is adjusted；To soft
Property silver nanowires film on conductive network be etched after print silver paste figure line, remove silver paste figure line in solvent, development, heat
The second silver paste electric network is formed after processing, obtains second sensor.
4. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor according to claim 1, feature exist
In the photocuring macromolecule is grouped as by each group of following mass percent: photoinitiator 0.2 ~ 5%, modified polyurethane propylene
Acid esters 25 ~ 35%, the multi-functional acrylate 10 ~ 30% containing triazine ring and dipentaerythritol polyfunctional acrylic ester 15 ~
45%。
5. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor according to claim 1, feature exist
In the photocuring high-molecular optical solidifies macromolecule and is grouped as by each group of following mass percent: photoinitiator 0.2 ~ 5% changes
Property urethane acrylate 25 ~ 35%, inorganic nano-filler 1 ~ 10%, coupling agent 0.5 ~ 2%, the polyfunctional group propylene containing triazine ring
Acid esters 10 ~ 30% and dipentaerythritol polyfunctional acrylic ester 15 ~ 45%.
6. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor according to claim 3, feature exist
In the flexibility silver nanowires film is the optical substrate equipped with conductive network, and the optical substrate is its of PET, PI, COP
Middle one kind, light transmittance >=90% of the optical substrate.
7. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor according to claim 1, feature exist
In the temperature used that is heat-treated is 120 ~ 200 DEG C.
8. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor according to claim 2 or 3, feature
It is, yellow light processing is carried out before the development, and the yellow light processing is to carry out ultraviolet light pattern to silver paste in the environment of yellow light
The processing of exposure, the development remove unexposed cured silver paste to carry out cleaning to silver paste using 3 ~ 7% sodium bicarbonate solutions,
The heat treatment is hot-air oven or 120 ~ 140 DEG C of IR continuous tunnel furnace of baking.
9. a kind of preparation method of composite double layer ultrathin flexible touch screen sensor according to claim 1, feature exist
In the sheet resistance of the silver nanowires film is 50-100 Ω/sq, and the conductive network sheet resistance is 50-100 Ω/sq.
10. a kind of composite double layer ultrathin flexible touch screen sensor, which is characterized in that any one preparation according to claim 1 ~ 9
The composite double layer ultrathin flexible touch screen sensor of method preparation.
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Application publication date: 20190723 |
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