CN109240545A - A kind of foldable touch module, touch screen and terminal device - Google Patents
A kind of foldable touch module, touch screen and terminal device Download PDFInfo
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- CN109240545A CN109240545A CN201811199402.3A CN201811199402A CN109240545A CN 109240545 A CN109240545 A CN 109240545A CN 201811199402 A CN201811199402 A CN 201811199402A CN 109240545 A CN109240545 A CN 109240545A
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Classifications
-
- 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
-
- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- 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
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
-
- 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
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Manufacture Of Switches (AREA)
- Structure Of Printed Boards (AREA)
Abstract
The present invention relates to touch screen technology field more particularly to a kind of foldable touch modules, touch screen and terminal device.Existing touch module is repeatedly bent, easily occur being broken or break-off, it is difficult to be applied in the equipment such as foldable mobile phone, therefore a kind of foldable touch module is provided, including the patterned transparent conductive film of upper layer and lower layer, and intermediate transparent bent optical cement；Conductive film be nano-silver thread is coated on Kapton made of, pattern is obtained by laser-induced thermal etching；Bending region is equipped on conductive film, the pattern bent in region is drawn from the lower edges cabling of transparent conductive film.Silver nanowires with satisfactory electrical conductivity and bendable folding endurance is coated on transparent conductive film is made in high rigidity and splendid flexible Kapton, without printing conductive silver paste cabling at left and right sides of bending region, it can be effectively prevent phenomena such as broken wires occur in bending process or falling off, so that the touch module has excellent bent performance.
Description
Technical field
The present invention relates to touch screen technology field more particularly to a kind of foldable touch modules, touch screen and terminal device.
Background technique
Currently, capacitance touch screen is the major way of human-computer interaction, the global shipment amount of last year has been above 3,000,000,000.Oxygen
Change the main material that indium tin (ITO) is capacitance touch screen.But, the magnetron sputtering technique for preparing ito thin film needs high temperature, height
The utilization rate of vacuum, raw material is low, and time consumption and energy consumption；Along with its core material-indium is rare element, so that the valence of ito thin film
Lattice constantly increase.In addition, ITO has the brittleness of ceramics, when strain is 3%, ITO will be cracked and is crushed, electric conductivity meeting
Sharply decline even disconnects, thus the development for being unable to satisfy wearable device, flexible electronic device, foldable smart phone etc. needs
It asks.
In recent years, silver nanowires is due to good electric conductivity and bendable folding endurance, it is considered to be most potential substitution
ITO becomes the core material of next-generation touch technology.In the prior art, multi-pass cross by nano-silver thread be coated on transparent PET or
Transparent conductive film is formed on the substrates such as glass.Common PET base material, be dimethyl terephthalate (DMT) exchanged with glycol ester or
Bishydroxyethyl terephthalate is first synthesized with terephthalic acid (TPA) and ethylene glycol esterification, polycondensation reaction is then carried out again and is made, belong to
Crystal type saturated polyester is milky or light yellow, highly crystalline polymer.After repeatedly bending, it is easy to appear fracture, nothing
Method meets the requirement for needing to fold touch-control.
From cabling angle, existing touch sensing needs etching after surrounding brush silver paste or copper facing to realize frame cabling, but
This cabling mode is easy to appear fracture or falls off after repeatedly bending repeatedly, it is difficult to be applied to the following foldable mobile phone
Etc. in equipment.The patent of Publication No. CN102999217A discloses a kind of Rimless touch screen, by touch screen it is original longitudinal and
Laterally staggered emission electrode line and receiving electrode line is changed to oblique interlaced arrangement, will be originally from the effective detection zone of touch screen
The right and left lead-out wire is changed to not need left in the effective detection zone of touch screen from both sides lead-out wire above and below the effective detection zone of touch screen
Right both sides occupied space cabling realizes touch screen the right and left Rimless.But only simultaneously by design of the right and left without cabling
Bending effect needed for not being able to satisfy foldable touch screen.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of foldable touch module and applies the foldable touch module
Touch screen and terminal device, foldable touch screen repeatedly curved material and cabling mode can be achieved in open one kind.
The invention adopts the following technical scheme:
A kind of foldable touch module, including bilevel first transparent conductive film and the second transparent conductive film, and
Intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film be silver nanowires is coated on it is transparent
Kapton on made of, the first pattern, the second electrically conducting transparent are obtained by laser-induced thermal etching in the first transparent conductive film
The second pattern is obtained by laser-induced thermal etching on film；It is provided on the corresponding position of first transparent conductive film and the second transparent conductive film
Region is bent, bends the first pattern and the second pattern in region respectively from the first transparent conductive film and the second transparent conductive film
Lower edges cabling is drawn.
Further, the first pattern in the first transparent conductive film is drawn from the lower edges of the first transparent conductive film；The
The second pattern in two transparent conductive films is drawn from the lower edges of the second transparent conductive film.
Further, first pattern and the second pattern diagonal cross is arranged.
Further, the angle of the first pattern and the lower edges of the first transparent conductive film is 5-85 °；Second pattern and
The angle of the lower edges of two transparent conductive films is 5-85 °.
Further, the angle of the first pattern and the lower edges of the first transparent conductive film is 18-72 °；Second pattern with
The angle of the lower edges of second transparent conductive film is 18-72 °.
Further, the diagonal for being oriented parallel to the first transparent conductive film of the first pattern；The side of second pattern
To the diagonal for being parallel to the second transparent conductive film.
Further, it is used respectively from the lead-out wire that the lower edges of the first transparent conductive film and the second transparent conductive film are drawn
FPC link is connected with touch chip.
Further, the Kapton in the first transparent conductive film with a thickness of 30-80 μm；Second transparent conductive film
In Kapton with a thickness of 10-30 μm；First transparent conductive film and the silver nanowires in the second transparent conductive film
With a thickness of 50-200nm；Optical cement with a thickness of 30-100 μm.
The present invention also provides a kind of touch screen, the touch screen include above-mentioned foldable touch module and with the foldable touch-control
The display panel that mould group is stacked.
The present invention also provides a kind of terminal device, which includes above-mentioned touch screen.
Foldable touch module of the invention, the silver nanowires with satisfactory electrical conductivity and bendable folding endurance, which is coated on, to be had
Transparent conductive film is made on high rigidity and splendid flexible Kapton, and pattern is obtained by laser-induced thermal etching；Up and down
Two layers of the first transparent conductive film and the second transparent conductive film pass through bent optics glue bond；It is located at bending region simultaneously
First pattern and the second pattern is respectively from the lower edges lead-out wire of the first transparent conductive film and the second transparent conductive film, so that curved
Without printing conductive silver paste cabling at left and right sides of the domain of folding area, it can effectively prevent broken wires occur in bending process or fall off
Phenomenon, so that the touch module is with excellent bent performance, it can be achieved that 200,000 times or more bendings, meet foldable intelligence
The demand of mobile phone and flexible electronic device etc..
Detailed description of the invention
Illustrate the embodiment of the present invention or technical solution in the prior art in order to clearer, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it is clear that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of foldable touch module of the invention；
Fig. 2 is the top view of the first embodiment of foldable touch module of the invention；
Fig. 3 is the top view of second of embodiment of foldable touch module of the invention；
Fig. 4 is the top view of the third embodiment of foldable touch module of the invention；
In figure, the first transparent conductive film of 1-, the second transparent conductive film of 2-, 3- optical cement, 4- silver nanowires, 5- polyimides
Film, 6- bend region.
Specific embodiment
Below in conjunction with the attached drawing in the present invention, technical solution in the embodiment of the present invention carry out it is clear, completely retouch
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, those skilled in the art's all other reality obtained without making creative work
Example is applied, protection scope of the present invention is belonged to.
A kind of foldable touch module, as shown in Figure 1 and Figure 2, including bilevel first transparent conductive film 1 and second
Transparent conductive film 2, and intermediate transparent bent optical cement 3；First transparent conductive film 1 and the second transparent conductive film 2 are
Made of silver nanowires 4 being coated on transparent Kapton 5, obtained in the first transparent conductive film 1 by laser-induced thermal etching
To the first pattern, second pattern is obtained by laser-induced thermal etching in the second transparent conductive film 2；First transparent conductive film 1 and second is saturating
It is provided with bending region 6 on the corresponding position of bright conductive film 2, bends the first pattern and the second pattern in region 6 respectively from the
The lower edges cabling of one transparent conductive film 1 and the second transparent conductive film 2 is drawn.
Polyimides is one of optimal high-molecular organic material of comprehensive performance, and high temperature resistant can be -200 DEG C in temperature range
~300 DEG C of long-time services, no sharp melting point have high insulating property.Electricity is reduced by reducing intramolecular and intermolecular force
The formation of lotus transfer Complexes, or dissymmetrical structure is introduced, it can prepare transparent polyimide (CPI), CPI has height
Hardness and splendid flexibility.
Silver nanowires has good electric conductivity and bendable folding endurance, and silver nanowires film is that resistance is low, translucency is good, flexing
Good, the bent transparent conductive film of property, bending is more preferably compared with tin indium oxide.Therefore, there will be satisfactory electrical conductivity and can
The silver nanowires of bending is coated on in high rigidity and splendid flexible polyimide base material, so that the touch module obtains
Obtain excellent bent performance.
Preferably, in electrically conducting transparent film preparation, Kapton surface is coated in silver nanowires and forms conductive layer
On the basis of, it also is coated with a protective layer in conductive layer surface, plays a protective role to transparent conductive film, makes its electric conductivity more
Add stabilization.
Existing touch module is mostly the touch-driven electrode and touch-control sensing electrode of horizontal and vertical interlaced arrangement respectively,
There is lead-out wire at left and right sides of conductive film, etching is after needing brush silver paste or copper facing to realize frame cabling.This cabling
Mode is being easy to appear fracture or is being fallen off after bending repeatedly.In the embodiment of the present invention, there will be satisfactory electrical conductivity and can
The silver nanowires of bending is coated on transparent conductive film is made in high rigidity and splendid flexible Kapton, and
Pattern is obtained by laser-induced thermal etching；First pattern and the second pattern positioned at bending region is respectively from the first transparent conductive film and the
The lower edges lead-out wire of two transparent conductive films, so that without printing conductive silver paste cabling at left and right sides of bending region, it can be effective
Phenomena such as occurring broken wires in bending process or falling off is prevented, so that the touch module has excellent bent performance.
More specifically, the parallel lines structure that Fig. 2 is shown into Fig. 4 is the first pattern and second observed on macroscopic perspective
Pattern；In microcosmic angle, first pattern and the second pattern be silver nanowires on conductive film random distribution and be laser etched beat
The nutty structure being broken into is not turned on to form open circuit between granular silver nanowires, by generating signal after touch-control come really
Determine contact position, and then realizes the detection to each position on entire touch screen.
For foldable touch module, the influential region of its folding property is concentrated mainly in bending region, bending
Region 6 without conductive silver paste, directly from the lower edges cabling of conductive film can make bent area domain edge and vertical direction without
Any other cabling can prevent occurring broken wires or obscission in the process of bending, be conducive to improve the curved of touch module
Folding ability.
More specifically, as shown in figure 3, the first pattern in the first transparent conductive film 1 is above and below the first transparent conductive film 1
It draws at edge；The second pattern in second transparent conductive film 2 is drawn from the lower edges of the second transparent conductive film 2.Bending
Realize that the pattern in entire conductive diaphragm area draws from lower edges cabling on the basis of conductive film lower edges cabling in region
Out, it further improves the bending performance of touch module entirety and reduces the area occupied of touch screen frame, be conducive to realize
Screen structure comprehensively.
Specifically, first pattern and the second pattern diagonal cross is arranged.Conventional touch screen is by longitudinal transmitting electricity
Pole emits signal, lateral receiving electrode receives signal, and transmitting and receiving channel arrange that this is allowed for along horizontal and vertical direction
Setting conductive silver paste is both needed in conductive film edge, and each channel is connected to flexible circuit board.The conductive silver of the left and right sides
Slurry especially bends the conductive silver paste of region two sides, can seriously affect the folding effect of touch module.It, will in the embodiment of the present invention
The setting of first pattern and the second pattern diagonal cross saves convenient for directly drawing from lower edges and applies silver paste in conductive film two sides
Carry out the link of conductive communication, so that the left and right edges and vertical direction of transparent conductive film without other cablings, can effectively prevent bending
Phenomena such as occurring broken wires in the process or falling off.
Specifically, the angle of the first pattern and the lower edges of the first transparent conductive film is 5-85 °；Second pattern and second
The angle of the lower edges of transparent conductive film is 5-85 °.Preferably, the angle of pattern and the lower edges of transparent conductive film is
18-72 °, can be 18 °, 30 °, 40 °, 45 °, 50 °, 60 °, 72 °.
More specifically, the diagonal for being oriented parallel to the first transparent conductive film of the first pattern；The side of second pattern
To the diagonal for being parallel to the second transparent conductive film.
It is worth noting that, above-mentioned angle and in parallel be between the pattern and conductive film seen from macroscopic perspective
Relationship, each pattern is irregular structure on microcosmic angle.
Specifically, being used respectively from the lead-out wire that the lower edges of the first transparent conductive film and the second transparent conductive film are drawn
FPC link is connected with touch chip.
Specifically, Kapton in the first transparent conductive film with a thickness of 30-80 μm；In second transparent conductive film
Kapton with a thickness of 10-30 μm；The thickness of first transparent conductive film and the silver nanowires in the second transparent conductive film
Degree is 50-200nm；Optical cement with a thickness of 30-100 μm.
The present invention also provides a kind of touch screen, the touch screen include above-mentioned foldable touch module and with the foldable touch-control
The display panel that mould group is stacked.
The present invention also provides a kind of terminal device, which includes above-mentioned touch screen.Specifically, the terminal device is
Mobile phone, computer, TV etc..
Foldable touch module and its bending resistance to facilitate the understanding of the present invention, combined with specific embodiments below
And the invention will be further described for comparative example.
Embodiment 1
A kind of foldable touch module, as shown in Fig. 2, including that bilevel first transparent conductive film and second transparent are led
Electrolemma, and intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film are by silver nanowires
And made of protective layer is coated on transparent Kapton, first is obtained by laser-induced thermal etching in the first transparent conductive film
Pattern obtains the second pattern by laser-induced thermal etching in the second transparent conductive film；The setting of first pattern and the second pattern diagonal cross,
The angle of first pattern and the lower edges of the first transparent conductive film is 45 °, the second pattern and the second transparent conductive film up and down
The angle at edge is 45 °；Bending region, bending are provided on the corresponding position of first transparent conductive film and the second transparent conductive film
First pattern and the second pattern in region is respectively from the lower edges cabling of the first transparent conductive film and the second transparent conductive film
It draws, the first pattern and the second pattern in non-bending region is by the conductive silver paste that is coated in transparent conductive film two sides come lead
To lower edges；Lead-out wire is linked with FPC respectively to be connected with touch chip.
Embodiment 2
A kind of foldable touch module, as shown in figure 3, including that bilevel first transparent conductive film and second transparent are led
Electrolemma, and intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film are by silver nanowires
And made of protective layer is coated on transparent Kapton, first is obtained by laser-induced thermal etching in the first transparent conductive film
Pattern obtains the second pattern by laser-induced thermal etching in the second transparent conductive film；The setting of first pattern and the second pattern diagonal cross,
The diagonal for being oriented parallel to the first transparent conductive film of first pattern, the second pattern are oriented parallel to second transparent lead
The diagonal of electrolemma；First pattern and the second pattern respectively from the first transparent conductive film and the second transparent conductive film up and down
Edge cabling is drawn；Lead-out wire is linked with FPC respectively to be connected with touch chip.
Embodiment 3
A kind of foldable touch module, as shown in figure 4, including that bilevel first transparent conductive film and second transparent are led
Electrolemma, and intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film are by silver nanowires
And made of protective layer is coated on transparent Kapton, first is obtained by laser-induced thermal etching in the first transparent conductive film
Pattern obtains the second pattern by laser-induced thermal etching in the second transparent conductive film；The setting of first pattern and the second pattern diagonal cross,
The angle of first pattern and the lower edges of the first transparent conductive film is 18 °, the second pattern and the second transparent conductive film up and down
The angle at edge is 18 °；First pattern and the second pattern respectively from the first transparent conductive film and the second transparent conductive film up and down
Edge cabling is drawn；Lead-out wire is linked with FPC respectively to be connected with touch chip.
Embodiment 4
A kind of foldable touch module, including bilevel first transparent conductive film and the second transparent conductive film, and
Intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to apply silver nanowires and protective layer
Cloth on transparent Kapton made of, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, second
The second pattern is obtained by laser-induced thermal etching in transparent conductive film；The setting of first pattern and the second pattern diagonal cross, the first pattern
Angle with the lower edges of the first transparent conductive film is 72 °, the folder of the lower edges of the second pattern and the second transparent conductive film
Angle is 72 °；First pattern and the second pattern is respectively from the lower edges cabling of the first transparent conductive film and the second transparent conductive film
It draws；Lead-out wire is linked with FPC respectively to be connected with touch chip.
Embodiment 5
A kind of foldable touch module, including bilevel first transparent conductive film and the second transparent conductive film, and
Intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to apply silver nanowires and protective layer
Cloth on transparent Kapton made of, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, second
The second pattern is obtained by laser-induced thermal etching in transparent conductive film；The setting of first pattern and the second pattern diagonal cross, the first pattern
Angle with the lower edges of the first transparent conductive film is 5 °, the angle of the lower edges of the second pattern and the second transparent conductive film
It is 5 °；First pattern and the second pattern is drawn from the lower edges cabling of the first transparent conductive film and the second transparent conductive film respectively
Out；Lead-out wire is linked with FPC respectively to be connected with touch chip.
Embodiment 6
A kind of foldable touch module, including bilevel first transparent conductive film and the second transparent conductive film, and
Intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to apply silver nanowires and protective layer
Cloth on transparent Kapton made of, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, second
The second pattern is obtained by laser-induced thermal etching in transparent conductive film；The setting of first pattern and the second pattern diagonal cross, the first pattern
Angle with the lower edges of the first transparent conductive film is 85 °, the folder of the lower edges of the second pattern and the second transparent conductive film
Angle is 85 °；First pattern and the second pattern is respectively from the lower edges cabling of the first transparent conductive film and the second transparent conductive film
It draws；Lead-out wire is linked with FPC respectively to be connected with touch chip.
Embodiment 7
A kind of foldable touch module, including bilevel first transparent conductive film and the second transparent conductive film, and
Intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to apply silver nanowires and protective layer
Cloth on transparent Kapton made of, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, second
The second pattern is obtained by laser-induced thermal etching in transparent conductive film；The setting of first pattern and the second pattern diagonal cross, the first pattern
Angle with the lower edges of the first transparent conductive film is 26.6 °, the lower edges of the second pattern and the second transparent conductive film
Angle is 26.6 °；First pattern and the second pattern is respectively from the lower edges of the first transparent conductive film and the second transparent conductive film
Cabling is drawn；Lead-out wire is linked with FPC respectively to be connected with touch chip.
Comparative example 1
A kind of touch module, including bilevel first transparent conductive film and the second transparent conductive film, and intermediate
Transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to be coated on tin indium oxide and protective layer
Made of in bright PET film, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, in the second transparent conductive film
The second pattern is obtained by laser-induced thermal etching；The horizontal and vertical interlaced arrangement of first pattern and the second pattern, transparent conductive film surrounding
Edge-coating conductive silver paste lead, lead-out wire is linked with FPC respectively to be connected with touch chip.
Comparative example 2
A kind of touch module, including bilevel first transparent conductive film and the second transparent conductive film, and intermediate
Transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to be coated on tin indium oxide and protective layer
Made of on bright Kapton, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, second transparent leads
The second pattern is obtained by laser-induced thermal etching on electrolemma；The horizontal and vertical interlaced arrangement of first pattern and the second pattern, electrically conducting transparent
Film edge coating conductive silver paste lead, lead-out wire is linked with FPC respectively to be connected with touch chip.
Comparative example 3
A kind of touch module, including bilevel first transparent conductive film and the second transparent conductive film, and intermediate
Transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to be coated on tin indium oxide and protective layer
Made of in bright PET film, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, in the second transparent conductive film
The second pattern is obtained by laser-induced thermal etching；The setting of first pattern and the second pattern diagonal cross, the first pattern transparent are led with first
The angle of the lower edges of electrolemma is 26.6 °, and the angle of the lower edges of the second pattern and the second transparent conductive film is 26.6 °；
First pattern and the second pattern is drawn from the lower edges cabling of the first transparent conductive film and the second transparent conductive film respectively；It draws
Line is linked with FPC respectively to be connected with touch chip.
Comparative example 4
A kind of touch module, including bilevel first transparent conductive film and the second transparent conductive film, and intermediate
Transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to be coated on tin indium oxide and protective layer
Made of on bright Kapton, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, second transparent leads
The second pattern is obtained by laser-induced thermal etching on electrolemma；The setting of first pattern and the second pattern diagonal cross, the first pattern and first
The angle of the lower edges of transparent conductive film is 26.6 °, and the angle of the second pattern and the lower edges of the second transparent conductive film is
26.6°；First pattern and the second pattern is drawn from the lower edges cabling of the first transparent conductive film and the second transparent conductive film respectively
Out；Lead-out wire is linked with FPC respectively to be connected with touch chip.
Comparative example 5
A kind of touch module, including bilevel first transparent conductive film and the second transparent conductive film, and intermediate
Transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to be coated on silver nanowires and protective layer
Made of in bright PET film, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, in the second transparent conductive film
The second pattern is obtained by laser-induced thermal etching；The horizontal and vertical interlaced arrangement of first pattern and the second pattern, transparent conductive film surrounding
Edge-coating conductive silver paste lead, lead-out wire is linked with FPC respectively to be connected with touch chip.
Comparative example 6
A kind of touch module, including bilevel first transparent conductive film and the second transparent conductive film, and intermediate
Transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to be coated on silver nanowires and protective layer
Made of on bright Kapton, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, second transparent leads
The second pattern is obtained by laser-induced thermal etching on electrolemma；The horizontal and vertical interlaced arrangement of first pattern and the second pattern, electrically conducting transparent
Film edge coating conductive silver paste lead, lead-out wire is linked with FPC respectively to be connected with touch chip.
Comparative example 7
A kind of touch module, including bilevel first transparent conductive film and the second transparent conductive film, and intermediate
Transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to be coated on silver nanowires and protective layer
Made of in bright PET film, the first pattern is obtained by laser-induced thermal etching in the first transparent conductive film, in the second transparent conductive film
The second pattern is obtained by laser-induced thermal etching；The setting of first pattern and the second pattern diagonal cross, the first pattern transparent are led with first
The angle of the lower edges of electrolemma is 26.6 °, and the angle of the lower edges of the second pattern and the second transparent conductive film is 26.6 °；
First pattern and the second pattern is drawn from the lower edges cabling of the first transparent conductive film and the second transparent conductive film respectively；It draws
Line is linked with FPC respectively to be connected with touch chip.
Touch module obtained in embodiment 1-7 and comparative example 1-7 is subjected to bending performance test, to verify different cablings
The influence of mode and different materials to mould group bending performance, specific test process are as follows:
Using the bar folder pair repeatedly of the model XHS-ZW-03A of the gloomy experimental instruments and equipment limited production of the prosperous perseverance in Shenzhen
Touch module made from each embodiment and comparative example is tested, experimental condition are as follows: presss from both sides mould group one end to be tested with clamping plate
Firmly, clamping plate one end is half fillet that radius is 1mm, and the other end is clipped on crank axle, and under motor drive, mould group carries out repeatedly curved
Folding, inflection frequency is once per second.Record the bending number and resistance change rate of different mould groups.The results are shown in Table 1.
The bending contrast test result of the different touch modules of table 1
As shown in Table 1, with the increase of flexing number, polyamides Asia is coated on silver nanowires in 1-7 of the embodiment of the present invention
Realize that touch module made from the mode from conductive film lower edges cabling is constantly being folded on amine film and in bending region
Resistance change rate in journey is minimum, and resistance change rate, can with excellent within 15% after being subjected to nearly 200,000 bendings
Bending, foldability energy.In comparative example it is single use touch module made from polyimide base material or silver nanowires electrode wires with
And single change cabling mode realizes that the ability resistant to bending for the touch module that arranged crosswise obtains is relatively poor.Therefore, this hair
Foldable touch module made from bright embodiment can be widely used in foldable touch screen, flexible electronic device, wearable set
It is standby to wait fields.
The present invention is further described by specific embodiment above, it should be understood that, here specifically
Description, should not be construed as the restriction for the essence of the present invention with range, and one of ordinary skilled in the art is reading this explanation
The various modifications made after book to above-described embodiment belong to the range that the present invention is protected.
Claims (10)
1. a kind of foldable touch module, which is characterized in that lead including bilevel first transparent conductive film and second are transparent
Electrolemma, and intermediate transparent bent optical cement；First transparent conductive film and the second transparent conductive film are to receive silver
Rice noodles obtain first by laser-induced thermal etching in first transparent conductive film made of being coated on transparent Kapton
Pattern obtains the second pattern by laser-induced thermal etching in second transparent conductive film；
Bending region, the bending region are provided on the corresponding position of first transparent conductive film and the second transparent conductive film
Interior first pattern and the second pattern is respectively from the lower edges cabling of first transparent conductive film and the second transparent conductive film
It draws.
2. foldable touch module according to claim 1, which is characterized in that first in first transparent conductive film
Pattern is drawn from the lower edges of first transparent conductive film；The second pattern in second transparent conductive film is from described
The lower edges of two transparent conductive films are drawn.
3. foldable touch module according to claim 1 or 2, which is characterized in that the first pattern and the second pattern
Diagonal cross setting.
4. foldable touch module according to claim 3, which is characterized in that first pattern and described first transparent
The angle of the lower edges of conductive film is 5-85 °；The folder of second pattern and the lower edges of second transparent conductive film
Angle is 5-85 °.
5. foldable touch module according to claim 4, which is characterized in that first pattern and described first transparent
The angle of the lower edges of conductive film is 18-72 °；The folder of second pattern and the lower edges of second transparent conductive film
Angle is 18-72 °.
6. foldable touch module according to claim 3, which is characterized in that first pattern is oriented parallel to institute
State the diagonal of the first transparent conductive film；Second pattern is oriented parallel to the diagonal of second transparent conductive film
Line direction.
7. foldable touch module according to claim 1, which is characterized in that from first transparent conductive film and second
The lead-out wire that the lower edges of transparent conductive film are drawn is linked with FPC respectively to be connected with touch chip.
8. foldable touch module described in any one of -7 according to claim 1, which is characterized in that first electrically conducting transparent
Kapton in film with a thickness of 30-80 μm；Kapton in second transparent conductive film with a thickness of
10-30μm；First transparent conductive film and the silver nanowires in the second transparent conductive film with a thickness of 50-200nm；The light
Learn glue with a thickness of 30-100 μm.
9. a kind of touch screen, which is characterized in that including foldable touch module such as of any of claims 1-8 and with
The display panel that the foldable touch module is stacked.
10. a kind of terminal device, which is characterized in that including touch screen as claimed in claim 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2018111232744 | 2018-09-26 | ||
| CN201811123274 | 2018-09-26 |
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| CN201811199402.3A Pending CN109240545A (en) | 2018-09-26 | 2018-10-16 | A kind of foldable touch module, touch screen and terminal device |
| CN201821669193.XU Active CN209281362U (en) | 2018-09-26 | 2018-10-16 | A kind of foldable touch module, touch screen and terminal device |
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| WO2020150928A1 (en) * | 2019-01-23 | 2020-07-30 | 深圳市柔宇科技有限公司 | Touch screen, flexible display panel, and flexible display device |
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| WO2020062157A1 (en) * | 2018-09-26 | 2020-04-02 | 深圳市华科创智技术有限公司 | Foldable touch module, touch screen and terminal device |
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| WO2020062157A1 (en) | 2020-04-02 |
| CN209281362U (en) | 2019-08-20 |
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