CN103309537A - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN103309537A CN103309537A CN2013102403303A CN201310240330A CN103309537A CN 103309537 A CN103309537 A CN 103309537A CN 2013102403303 A CN2013102403303 A CN 2013102403303A CN 201310240330 A CN201310240330 A CN 201310240330A CN 103309537 A CN103309537 A CN 103309537A
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- fpc
- insulating coating
- touch screen
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- panel base
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Abstract
The invention relates to a capacitive touch screen which comprises a panel substrate provided with a conductive coating, wherein the panel substrate is communicated with a mainboard of a whole machine through a circuit board, such as an FPC (flexible printed circuit) board; the periphery of the panel substrate is covered with an insulating coating, and holes are reserved in the insulating coating; the insulating coating is covered with a wire which has the same color with the insulating coating and is bridged by a conducting material; and the wire bridged by the conducting material is communicated with the conductive coating on the panel substrate through the holes in the insulating coating. Compared with the prior art, the wire is bridged on a touch panel, so that the FPC structure can be reduced to the greatest extent when the FPC is designed, pins during connection of an FPC and the touch panel are reduced, the manufacturing requirement of the FPC is reduced, and the binding process of the FPC and the touch screen is simplified, so that the FPC is simpler in structure, more convenient in processing and wider in usage.
Description
Technical field
The present invention relates to a kind of touch-screen, specifically a kind of capacitive touch screen.
Background technology
Touch-screen, man-machine conversation is carried out in available finger touch operation, generally is used in touch-screen mobile phone, touch-screen PDA, panel computer is in automatic navigator and other industrial control equipments.The user can save operation push-button directly to operate by touch-screen, has strengthened man-machine interactive.
Capacitive touch screen has appearred in the development along with science and technology, and this kind touch-screen has become the new touch apparatus of electronic equipment such as mobile phone, notebook.Because capacitive touch screen is compared with traditional touch-screen, has multipoint-touch-technology, its location is more precisely reliable.
And in present capacitance touch screen technology, the bridge formation circuit of contact panel generally all is achieved at FPC.Like this, need FPC to have very large design space, restricted greatly the structure of terminal complete machine, and FPC is too many with the pin of contact panel when being connected, greatly affect the be connected technique of contact panel with FPC, thereby affected production efficiency and the yield of touch-screen.In addition, such connected mode is relatively high to the making requirement of FPC, has restricted production efficiency and the yield of FPC.
Summary of the invention
The present invention designed a kind of capacitive touch screen in order to overcome the deficiencies in the prior art, makes it simplify the technique that is connected between FPC and the contact panel, and discharged the design space of FPC.
To achieve these goals, the invention provides a kind of capacitive touch screen, comprise: with the panel base material of conductive coating, described panel base material is communicated with the complete machine mainboard by circuit board, cover insulating coating around the described panel base material, and box out at described insulating coating;
Be coated with the circuit of building bridge with the homochromy employing conductive material of described insulating coating on the described insulating coating, and the hole that the described employing conductive material link tester of building bridge is crossed on the described insulating coating is communicated with conductive coating on the described panel base material;
One end of described circuit board is connected with the circuit that described employing conductive material is built bridge, and the other end is connected with described complete machine mainboard.
Embodiments of the present invention are compared with prior art, and when user's finger point touched panel, the positional information of contact can be exported by being arranged on the circuit that adopts conductive material to build bridge on the contact panel, and sends in the complete machine mainboard through circuit board.Since with circuit bridging on the panel base material at bezel locations place, so when design FPC, can dwindle the structure of FPC as far as possible, pin when minimizing FPC is connected with contact panel, reduce the making requirement of FPC, simplify the binding technique of FPC and touch-screen, more simplify thereby FPC is reached on structure, more convenient on the processing procedure, purpose widely on the purposes.And owing to boxing out at insulating coating, the circuit of building bridge is to adopt the conductive material homochromy with insulating coating, be connected with conductive coating on the panel base material by the hole on the insulating coating, so adopt the color of the circuit of conductive material bridge formation to combine together with the color of insulating coating, avoid producing aberration, affect the attractive in appearance of touch-screen.
Preferably, described conductive coating is tin indium oxide ITO conductive coating.Because the ITO conductive coating self has very strong electric conductivity, when user's contact panel, the electric capacity of certain point of the ITO conductive coating on the panel base material can change, and the electric capacity that this point changes is uploaded in the complete machine mainboard by the circuit that adopts conductive material to build bridge.
In order to adapt to the demand in market, conductive material can adopt silver slurry or carbon slurry.The user can according to the color of insulating coating reality, select corresponding conductive material.And according to the material of conductive material reality, select silver slurry or the wiring of charcoal slurry typography.
Preferably, also add on the described circuit board and post control chip.Control chip can scan the Touch Zone, calculates the coordinate position of Touch Zone upper contact according to the capacitance variations before and after the scanning, and this position is being shown screen display, thereby improves the bearing accuracy of contact panel.
Preferably, described circuit board is flexible PCB FPC.Because capacitive touch screen uses FPC as the lead-in wire that connects contact panel and complete machine mainboard, because FPC has stronger flexibility, institute is so that be installed in touch-screen on the complete machine mainboard.
Preferably, described panel base material can adopt panel base material or the GLASS material of PC material, PET material.So that the present invention has widely application scenarios, need with satisfying the market.
Description of drawings
Fig. 1 is the structural representation of existing capacitive touch screen;
Fig. 2 is the structural representation of first embodiment of the invention;
Fig. 3 is the side view of Fig. 2.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing the embodiments of the present invention are explained in detail.Yet, persons of ordinary skill in the art may appreciate that in each embodiment of the present invention, in order to make the reader understand the application better many ins and outs have been proposed.But, even without these ins and outs with based on many variations and the modification of following each embodiment, also can realize each claim of the application technical scheme required for protection.
As shown in Figure 1, existing capacitive touch screen comprises bridge formation circuit 1, FPC2.Wherein, the bridge formation circuit 1 of contact panel is realized at FPC2.Like this, require FPC need to have very large design space, restricted greatly the structure of complete machine, and FPC is too many with the pin of contact panel when being connected, greatly affect the be connected technique of contact panel with FPC, thereby affected production efficiency and the yield of touch-screen.In addition, such connected mode is relatively high to the making requirement of FPC, has restricted production efficiency and the yield of FPC.
The first embodiment of the present invention relates to a kind of capacitive touch screen, as shown in Figures 2 and 3, comprise: contact panel, contact panel comprise one with the panel base material 4 of conductive coating 3, and panel base material 4 is communicated with the complete machine mainboard by circuit board (not indicating among the figure).
In addition, contact panel also comprises: be coated in panel base material 4 dielectric ink 5 all around, dielectric ink 5 can select black or white as the frame of contact panel 3, and what be not insulated that printing ink 5 covers forms the Touch Zone of contact panel with the central area of conductive coating 3.
In the present embodiment, also leave hole 6 on the insulating coating 5, the shape in hole 6 can be circular, square, kidney-shaped etc., and the user can make according to the actual requirements.
And, on insulating coating 5, also be coated with the circuit 7 of building bridge with the homochromy employing conductive material of insulating coating 5, and adopt circuit 7 that conductive material builds bridge to be communicated with conductive coating 3 on the panel base material 4 by the hole 6 on the insulating coating 3.One end of circuit board is connected with the circuit 7 that adopts conductive material to build bridge, and the other end is used for connecting the complete machine mainboard.
When user's finger point touched the Touch Zone of panel, the positional information of contact can be exported by the circuit 7 that adopts conductive material to build bridge, and sends in the complete machine mainboard through circuit board.Since with circuit bridging on contact panel, so when design FPC, can dwindle the structure of FPC as far as possible, pin when minimizing FPC is connected with contact panel, reduce the making requirement of FPC, simplify the binding technique of FPC and touch-screen, more simplify thereby FPC has been reached on structure, more convenient on the processing procedure, purpose widely on the purposes.And owing to leaving hole 6 at insulating coating 5, the circuit of building bridge is to adopt the conductive material homochromy with insulating coating, be connected with conductive coating 3 on the panel base material by the hole 6 on the insulating coating 5, so adopt the color of the circuit of conductive material bridge formation to combine together with the color of insulating coating, avoid producing aberration, can not produce any impact to the outward appearance of touch-screen.
In addition, it is worth mentioning that, capacitive touch screen in the present embodiment is that OGS(is with a panel base material of transparent conducting coating) structure, frame pattern outside the panel base material is coated with the touch screen window that dielectric ink forms, and be printed with the sensor circuit for detection of touch location at transparent conducting coating (such as the ITO film).Also comprise on the panel base material: cover simultaneously the electrically conductive ink of described dielectric ink and described transparent conducting coating, by this electrically conductive ink described transparent conducting coating is extended to the described dielectric ink back side, be used for doing the outer processing of circuit of form.
In addition, in order to adapt to the demand in market, conductive material can adopt silver slurry or carbon slurry.The user can according to the color of insulating coating reality, select corresponding conductive material.And according to the material of conductive material reality, select silver slurry or the wiring of charcoal slurry typography.
And the panel base material of contact panel can adopt PC material, PET material or GLASS material.So that the present invention has widely application scenarios, need with satisfying the market.
The second embodiment of the present invention relates to a kind of capacitive touch screen, and the second embodiment is to have done further improvement on the basis of the first embodiment.Main improvements are: also can stick on control chip on circuit board.Control chip can scan the contact on the contact panel Touch Zone, calculates the coordinate position of Touch Zone upper contact according to the capacitance variations before and after the scanning, and this position is being shown screen display, thereby improves the bearing accuracy of contact panel.
And the circuit board 6 in the present embodiment is flexible PCB FPC.Because capacitive touch screen uses FPC as connecting the lead-in wire of contact panel with the complete machine mainboard, because FPC has stronger flexibility, so that touch-screen be installed on the complete machine mainboard.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above are to realize specific embodiments of the invention, and in actual applications, can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (6)
1. capacitive touch screen, comprise: with the panel base material of conductive coating, described panel base material is communicated with the complete machine mainboard by circuit board, it is characterized in that:
Cover insulating coating around the described panel base material, and box out at described insulating coating;
Be coated with the circuit of building bridge with the homochromy employing conductive material of described insulating coating on the described insulating coating, and the hole that the described employing conductive material link tester of building bridge is crossed on the described insulating coating is communicated with conductive coating on the described panel base material;
One end of described circuit board is connected with the circuit that described employing conductive material is built bridge, and the other end is connected with described complete machine mainboard.
2. capacitive touch screen according to claim 1, it is characterized in that: described conductive coating is tin indium oxide ITO conductive coating.
3. capacitive touch screen according to claim 1 is characterized in that: described conductive material can adopt silver slurry or carbon slurry.
4. capacitive touch screen according to claim 1, it is characterized in that: described circuit board is flexible PCB FPC.
5. capacitive touch screen according to claim 1 is characterized in that: also add on the described circuit board and post control chip.
6. the described capacitive touch screen of any one in 5 according to claim 1 is characterized in that: described panel base material is for based on the panel base material of polycarbonate material, based on the panel base material of polyethylene terephtalate material or based on the panel base material of glass GLASS material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102403303A CN103309537A (en) | 2013-06-18 | 2013-06-18 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102403303A CN103309537A (en) | 2013-06-18 | 2013-06-18 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103309537A true CN103309537A (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102403303A Pending CN103309537A (en) | 2013-06-18 | 2013-06-18 | Capacitive touch screen |
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| CN (1) | CN103309537A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699287A (en) * | 2014-01-02 | 2014-04-02 | 无锡力合光电传感技术有限公司 | Single-chip capacitance touch screen and preparation method thereof |
| CN103744566A (en) * | 2014-01-09 | 2014-04-23 | 苏州胜利精密制造科技股份有限公司 | Capacitive touch screen |
| CN103777834A (en) * | 2014-01-27 | 2014-05-07 | 无锡力合光电传感技术有限公司 | Single-chip capacitor touch screen based on organic glass pane and preparation method of single-chip capacitor touch screen |
| CN104714697A (en) * | 2015-03-31 | 2015-06-17 | 信利光电股份有限公司 | Display equipment, OGS touch screen and cover plate glass thereof |
| CN104793785A (en) * | 2015-03-24 | 2015-07-22 | 晟光科技股份有限公司 | Method for achieving high-definition screen allocation in small winding displacement space |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110094670A1 (en) * | 2008-05-16 | 2011-04-28 | Grunthaner Martin Paul | Flex circuit with single sided routing and double sided attach |
| CN102141865A (en) * | 2010-02-02 | 2011-08-03 | 展触光电科技股份有限公司 | Single-layer projected capacitive touch panel and manufacturing method thereof |
| CN103034387A (en) * | 2013-01-12 | 2013-04-10 | 深圳市中显微电子有限公司 | Single substrate type capacitive touch screen and manufacture method thereof |
-
2013
- 2013-06-18 CN CN2013102403303A patent/CN103309537A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110094670A1 (en) * | 2008-05-16 | 2011-04-28 | Grunthaner Martin Paul | Flex circuit with single sided routing and double sided attach |
| CN102141865A (en) * | 2010-02-02 | 2011-08-03 | 展触光电科技股份有限公司 | Single-layer projected capacitive touch panel and manufacturing method thereof |
| CN103034387A (en) * | 2013-01-12 | 2013-04-10 | 深圳市中显微电子有限公司 | Single substrate type capacitive touch screen and manufacture method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699287A (en) * | 2014-01-02 | 2014-04-02 | 无锡力合光电传感技术有限公司 | Single-chip capacitance touch screen and preparation method thereof |
| CN103744566A (en) * | 2014-01-09 | 2014-04-23 | 苏州胜利精密制造科技股份有限公司 | Capacitive touch screen |
| CN103777834A (en) * | 2014-01-27 | 2014-05-07 | 无锡力合光电传感技术有限公司 | Single-chip capacitor touch screen based on organic glass pane and preparation method of single-chip capacitor touch screen |
| CN104793785A (en) * | 2015-03-24 | 2015-07-22 | 晟光科技股份有限公司 | Method for achieving high-definition screen allocation in small winding displacement space |
| CN104714697A (en) * | 2015-03-31 | 2015-06-17 | 信利光电股份有限公司 | Display equipment, OGS touch screen and cover plate glass thereof |
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Application publication date: 20130918 |