CN212586859U - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN212586859U CN212586859U CN201922350335.7U CN201922350335U CN212586859U CN 212586859 U CN212586859 U CN 212586859U CN 201922350335 U CN201922350335 U CN 201922350335U CN 212586859 U CN212586859 U CN 212586859U
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- Prior art keywords
- electrode layer
- touch screen
- flexible substrate
- sensing electrode
- capacitive touch
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Abstract
The utility model discloses a capacitance touch screen. The capacitive touch screen comprises two flexible substrates, wherein patterned induction electrode layers are formed on the two flexible substrates respectively, one surfaces, provided with the induction electrode layers, of the flexible substrates are oppositely attached, and an insulating bonding layer is arranged between the induction electrode layers, so that a first induction electrode layer on the first flexible substrate and a second induction electrode layer on the second flexible substrate are insulated from each other. The capacitive touch screen enables the touch area to be coated and produced quickly and efficiently, the dense area can be achieved through the process of superfine line 3D printing, the production efficiency of the touch area is greatly improved due to the structure, the yield, the price and the efficiency of the dense area are greatly improved, the cost is greatly reduced, and the large-size touch screen is convenient to popularize and use.
Description
Technical Field
The utility model relates to a capacitance touch screen technical field especially relates to a capacitance touch screen.
Background
With the continuous development of the current social information interaction technology, more and more fields need self-service terminal equipment for human-computer interaction, and the touch screen is used as a main carrier of human-computer interaction touch and rapidly enters various fields of life. At present, the main capacitive touch screen on the market is designed and produced based on the screen size of a mobile phone or a Pad, and some touch requirements such as an infrared touch screen can be well adapted to a large screen and an oversized screen, but infrared touch has a series of problems of poor light interference resistance, poor touch precision and the like, and a large-size capacitive touch screen can well solve the defects of the infrared touch screen, but the large-size capacitive touch screen has the defects of low production yield, high cost, instability and the like, and currently, most manufacturers in the industry are still puzzled.
At present, several processes for manufacturing capacitive touch screens are available in the market, namely a process for manufacturing large-size capacitive screens by using ITO glass made of glass materials, namely G & G, a process for manufacturing capacitive screens by using a yellow light process, a laser etching process, an imprinting process, a transfer printing process and other technologies based on a nano silver process, a metal grid touch screen manufactured by using a yellow light or printing process, and a process for manufacturing the capacitive touch screens by printing superfine metal wires based on 3D at low cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a capacitance touch screen.
The utility model discloses a following technical scheme:
providing a first flexible substrate, and forming a patterned first sensing electrode layer on the first flexible substrate;
providing a second flexible substrate, and forming a patterned second sensing electrode layer on the second flexible substrate;
the first flexible substrate and the second flexible substrate are oppositely attached in a mode that the induction electrode layers face each other, and meanwhile, an insulating bonding layer is arranged between the first induction electrode layer and the second induction electrode layer, so that the first induction electrode layer on the first flexible substrate and the second induction electrode layer on the second flexible substrate are insulated from each other. The flexible touch screen or the touch membrane is manufactured in an opposite attaching mode, so that the flexible touch screen or the touch membrane is simpler, easier and more modularized to manufacture.
Preferably, the first flexible substrate of the patterned first sensing electrode layer is formed by the conductive coating liquid in a mode of interval coating; the second flexible substrate of the patterned second sensing electrode layer is formed by the conductive coating liquid in an interval coating mode; the first induction electrode layer on the first flexible substrate is attached and connected with the second induction electrode layer on the second flexible substrate in an opposite mode, and the first induction electrode layer and the second induction electrode layer are insulated from each other. The patterned induction electrode layer is formed by the way of coating the conductive coating liquid at intervals, and the patterned treatment can be carried out again without the mode of photoetching or laser etching and the like after coating, so that the manufacturing process is greatly simplified, and the manufacturing cost is reduced.
Optionally, the first sensing electrode layer on the first flexible substrate is a sensing layer TX, the second sensing electrode layer on the second flexible substrate is a sensing layer RX, and the sensing layer TX and the sensing layer RX are bonded together through a glue layer.
Optionally, the flexible substrate is a flexible transparent film made of polymers such as PET or PI.
Optionally, the first sensing electrode layer and the second sensing electrode layer are strip-shaped, and the first sensing electrode layer and the second sensing electrode layer are arranged oppositely in a crossing or orthogonal manner.
Optionally, the capacitive touch screen further includes a trace-dense area, the first sensing electrode layer or the second sensing electrode layer is connected with the trace-dense area through a connecting block, and the trace-dense area is a printed ultrafine enameled wire.
Optionally, the capacitive touch screen further includes a connection block, and the connection block is used for connecting the first sensing electrode layer or the second sensing electrode layer with the routing-dense area.
Optionally, the connecting block is made of a flexible conductive material.
Optionally, the connecting block comprises an upper connecting block and a lower connecting block, and the upper connecting block is electrically connected with the lower connecting block; the upper connecting block is electrically connected with the first sensing electrode layer or the second sensing electrode layer, and the material selected by the upper connecting block has better physical adhesion with the sensing electrode layer; the lower connecting block is electrically connected with the wiring dense area, and the material selected by the lower connecting block is a tin-plated layer or other metal layer which can be melted and wraps the conductor part of the superfine enameled wire. The flexible connection of the sensing electrode area and the wiring dense area can be better realized by the connecting block, so that several areas of the touch screen are more modularized, and the problem of touch failure caused by the compatibility problem among different conductive materials is avoided.
Optionally, the routing dense area is a conductive stripe printed by ultrafine enameled wires and used for connecting the controller and the touch area.
Optionally, the distance between the conductive stripes is between 0.01mm and 8 mm.
Optionally, the connecting block is an elongated strip and comprises a plurality of individual connecting blocks, and the connecting block may also be a single connecting block.
Optionally, an ACF conductive tape is adhered to the upper connection block, or a conductive adhesive is adhered to the upper connection block.
Optionally, the lower connecting block is provided with tin plating, and the superfine enameled wire and the lower connecting block can be welded by laser.
Furthermore, a side of the first flexible substrate, which is far away from the first sensing electrode layer, is further plated with a shadow eliminating layer, and the shadow eliminating layer is configured to eliminate color difference stripes generated by the interleaving of the first sensing electrode layer and the second sensing electrode layer.
Optionally, the conductive solution is a nano silver solution, a graphene solution, a carbon nanotube solution, a conductive polymer solution, or other conductive solutions suitable for coating various metal or non-metal products.
According to the technical scheme, the capacitive touch screen manufactured based on the conductive coating liquid at intervals is manufactured by ingeniously utilizing the interval coating technology and additionally arranging the flexible connecting block, so that several areas of the touch screen become modularized, the touch areas can be quickly and efficiently coated and produced, dense areas can be realized through an ultrafine line 3D printing process, the structure greatly improves the production efficiency of the touch areas, the yield, the price and the efficiency of the dense areas are greatly improved, the cost is greatly reduced, and the popularization and the use of large-size touch screens are facilitated.
Drawings
Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings, which are briefly described below as examples or figures of the prior art to be used in the description:
fig. 1 shows a capacitive touch panel made by coating conductive coating liquid at intervals
A schematic structural diagram of an RX sensing layer;
fig. 2 is a capacitive touch panel made by coating conductive coating liquid at intervals
A schematic structural diagram of a TX sensing layer;
fig. 3 is a schematic structural diagram of a TX channel connected to a dense area of a capacitive touch screen manufactured based on the spaced coating of a conductive coating liquid;
fig. 4 is a schematic structural diagram of an RX channel for dense connection of a capacitive touch screen according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a connecting block of a capacitive touch panel according to an embodiment of the present invention;
fig. 6 is a schematic view of an overall structure of a capacitive touch screen according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical solution of the present invention, the technical means and the technical effects achieved for realizing the purpose of the present invention are more clearly illustrated, and the following detailed description is made in conjunction with the accompanying drawings and the preferred embodiments of the present invention in conjunction with the specific embodiments, structures and features of the capacitive touch screen according to the present invention.
The embodiment of the utility model provides a capacitive touch screen,
as shown in fig. 1, the RX sensing layer 1 of the capacitive touch screen manufactured by coating the conductive coating liquid at intervals is schematically structured, the RX sensing layer 1 is based on a PET substrate, and is coated with spaced conductive stripes 3, the conductive stripes 3 are coated on the PET substrate by a nano silver aqueous solution and a spaced coating process, so that the formed spacing is uniform, and the width and distance of the stripes are determined according to the total size and the number of channels of the capacitive touch screen to be manufactured.
As shown in fig. 2, the schematic structure of the TX sensing layer (2) of the capacitive touch screen manufactured by alternately coating the conductive coating liquid is shown, the TX sensing layer 2 is also based on a PET substrate, and is coated with the spaced conductive stripes 3, and the structure of the TX sensing layer is the same as the principle of the RX sensing layer.
The conductive stripes 3 may also be coated with other conductive liquid suitable for coating at intervals, such as other nano-metal or coating liquid prepared from conductive materials such as carbon nanotubes, carbon fibers, etc., and the distance between the conductive stripes 3 is 0.01mm-8 mm.
It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other design drawings can be obtained on the basis of these drawings without inventive exercise.
The above is the core idea of the present application, and the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, under the premise that creative work is not done by ordinary skilled in the art, all other embodiments obtained all belong to the protection scope of the present invention.
In the following description, other specific details are set forth to provide a thorough understanding of the present invention, but the present invention may be implemented in other embodiments different from those described herein, and those skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 3 and 4, the TX and RX channels are connected to the dense area of the capacitive touch screen manufactured by applying the conductive coating liquid at intervals, and the TX dense area 4 and the RX dense area 5 are arranged into a required pattern by the ultrafine enameled wires 8 in a 3D printing manner. As shown in fig. 5, the schematic structural diagram of the connecting block of the capacitive touch screen manufactured based on the interval coating of the conductive coating liquid, wherein the connecting block consists of two parts, the part connected with the conductive stripe 3 is an upper connecting block 6, one part connected with the dense area is a lower connecting block 7, an upper connecting block 6 is communicated with the lower connecting block 7, and the upper connecting block 6 is provided with a conductive material which is adhered or fixedly connected with the conductive stripes 3, the conductive material is ACF conductive adhesive tape, or adhesive which is adhered with conductive material and is used for bonding, a tin plating layer or other metal layers which can be melted when being welded with the superfine enameled wire 8 and can wrap the conductor part of the superfine enameled wire 8 are arranged on the lower connecting block 7, and the connecting block can be a long strip, comprises a plurality of independent connecting blocks and can also be a single connecting block.
As shown in fig. 6, the RX sensing layer 1 and the TX sensing layer 2 are bonded together by an insulating adhesive, which may be OCA adhesive or other insulating adhesive material with stable properties and will not corrode or oxidize with the conductive stripes.
A layer of shadow eliminating material is further plated on the upper surface of the capacitive touch screen and on the surface close to the cover plate glass, and is used for eliminating chromatic aberration grains generated by criss-cross of the conductive stripes on the TX and RX induction layers.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should be regarded as the protection scope of the present invention.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A capacitive touch screen, comprising: a first flexible substrate on which a patterned first sensing electrode layer is formed;
a second flexible substrate on which a patterned second sensing electrode layer is formed;
and oppositely attaching the surfaces, provided with the sensing electrode layers, of the first flexible substrate and the second flexible substrate, and meanwhile, arranging an insulating bonding layer between the first sensing electrode layer and the second sensing electrode layer to enable the first sensing electrode layer on the first flexible substrate and the second sensing electrode layer on the second flexible substrate to be insulated from each other.
2. The capacitive touch screen of claim 1, wherein: the patterned induction electrode layer is formed by adopting a conductive coating liquid through interval coating.
3. The capacitive touch screen of claim 1, wherein: and forming a superfine enameled wire on the capacitive touch screen in a printing mode.
4. The capacitive touch screen of claim 3, wherein: the first induction electrode layer or the second induction electrode layer is electrically connected with the superfine enameled wire through the connecting blocks.
5. A capacitive touch screen, comprising: a first flexible substrate having a patterned first sensing electrode layer; a second flexible substrate having a patterned second sensing electrode layer;
the first induction electrode layer on the first flexible substrate is attached and connected with the second induction electrode layer on the second flexible substrate in an opposite mode, and the first induction electrode layer is insulated from the second induction electrode layer.
6. The capacitive touch screen of claim 5, further comprising:
an insulating bonding layer disposed between a first sensing electrode layer on the first flexible substrate and a second sensing electrode layer on the second flexible substrate.
7. The capacitive touch screen of claim 5, further comprising: and the routing dense area is formed by printing superfine enameled wires.
8. The capacitive touch screen of claim 7, further comprising: the connecting block is used for connecting the first sensing electrode layer or the second sensing electrode layer with the wiring dense area.
9. The capacitive touch screen of claim 8, wherein:
the connecting block comprises an upper connecting block and a lower connecting block, and the upper connecting block is electrically connected with the lower connecting block;
the upper connecting block is electrically connected with the first induction electrode layer or the second induction electrode layer, and the material selected by the upper connecting block has physical adhesion with the induction electrode layer;
the lower connecting block is electrically connected with the wiring dense area, and the material selected by the lower connecting block is provided with a tin coating which can be melted and wraps the conductor part of the superfine enameled wire.
10. The capacitive touch screen according to any one of claims 5 to 9, wherein:
the surface, far away from the first sensing electrode layer, of the first flexible substrate is further plated with a shadow eliminating layer which is configured to eliminate color difference stripes generated by the staggering of the first sensing electrode layer and the second sensing electrode layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922350335.7U CN212586859U (en) | 2019-12-24 | 2019-12-24 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922350335.7U CN212586859U (en) | 2019-12-24 | 2019-12-24 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212586859U true CN212586859U (en) | 2021-02-23 |
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ID=74656671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922350335.7U Expired - Fee Related CN212586859U (en) | 2019-12-24 | 2019-12-24 | Capacitive touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212586859U (en) |
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2019
- 2019-12-24 CN CN201922350335.7U patent/CN212586859U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221026 Address after: 223800 first and second floors of Building 5, smart grid standard plant, Sucheng District, Suqian City, Jiangsu Province Patentee after: Jiangsu minrou Photoelectric Technology Co.,Ltd. Address before: 215211 558 FENHU Road, Wujiang District, Suzhou, Jiangsu Patentee before: SUZHOU MINROU ELECTRONIC TECHNOLOGY CO.,LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210223 |