CN201897781U - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
- Publication number
- CN201897781U CN201897781U CN2010202368316U CN201020236831U CN201897781U CN 201897781 U CN201897781 U CN 201897781U CN 2010202368316 U CN2010202368316 U CN 2010202368316U CN 201020236831 U CN201020236831 U CN 201020236831U CN 201897781 U CN201897781 U CN 201897781U
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- touch screen
- capacitive touch
- ground wire
- interference ground
- interference
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Abstract
The utility model provides a capacitive touch screen which comprises a plurality of touch keys, a plurality of touch key electrode wires and a first anti-interference ground wire, wherein the first anti-interference ground wire is arranged on the edge of the capacitive touch screen; and the plurality of touch key electrode wires are electrically connected with the plurality of touch keys respectively. The capacitive touch screen also comprises a plurality of second anti-interference ground wires which respectively surround the peripheries of the plurality of touch keys. The capacitive touch screen has good anti-interference effect and good operational stability of products.
Description
Technical field
The utility model relates to a kind of touch-screen, relates in particular to a kind of capacitive touch screen.
Background technology
Touch-screen is as a kind of interface tool of electronic installation being operated by display screen, allow the user directly to touch or hand-written mode input information by point on the display device surface that is provided with touch-screen, more friendly than input equipments such as mouse, keyboards, convenient, therefore be used in more and more widely on the various portable sets, as mobile phone, PDA etc.For example, the user can one just display image and with display device that touch-screen combines on input want the information imported.According to the type of use contactant and the difference of affirmation contact point mode, touch-screen mainly can be divided into resistance-type, condenser type, infrared-type and surface acoustic wave type etc.Along with the maturation of capacitive touch screen control IC technology and the decline of cost, and some distinctive advantages are arranged with respect to other several technology, good as durability, not fragile, can use for a long time, make capacitive touch screen application more and more widely.
In the concrete application of capacitive touch screen,, thereby produce the touch-control problem of unstable because the inherent characteristic of its capacitive sensing is subjected to the interference of external signal through regular meeting.Therefore, how to improve its jamproof performance, become the problem of important consideration in the capacitive touch screen design process.
At present, common way is to design the wall scroll ground wire around capacitive touch screen, with the interference of shielding external signal.Seeing also Fig. 1, is a kind of part wire structures synoptic diagram of the capacitive touch screen relevant with the utility model.This capacitive touch screen 1 comprises a plurality of touch controlled keys 11 and the anti-interference ground wire 13 of wall scroll, and the anti-interference ground wire 13 of this wall scroll is arranged on the fringe region of this capacitive touch screen 1.Though this anti-interference ground wire 13 can produce the partly shielding effect effect, but be subject to the reason of structure and material, it can not shield the interference of external signal to this touch controlled key 11 preferably, the anti-interference that is produced still can not be satisfactory, further has influence on the operational stability of this capacitive touch screen 1.
The utility model content
At the bad problem of prior art capacitive touch screen anti-interference, the utility model provides a kind of anti-interference capacitive touch screen preferably.
A kind of capacitive touch screen, comprise a plurality of touch controlled keys, a plurality of touch controlled key electrode cabling and the first anti-interference ground wire, this first anti-interference ground wire is arranged on the edge of this capacitive touch screen, and these a plurality of touch controlled key electrode cablings electrically connect with these a plurality of touch controlled keys respectively.This capacitive touch screen further comprises a plurality of second anti-interference ground wire, and this a plurality of second anti-interference ground wire is looped around the periphery of these a plurality of touch controlled keys respectively.
As the further improvement of this capacitive touch screen, the periphery of each touch controlled key except touch controlled key electrode cabling, remainder all respectively by this second anti-interference ground wire institute around.
As the further improvement of this capacitive touch screen, all be provided with at interval between this second anti-interference ground wire and this touch controlled key.
As the further improvement of this capacitive touch screen, this capacitive touch screen further comprises input/output interface, and these a plurality of touch controlled key electrode cablings should be electrically connected to this input/output interface by a plurality of touch controlled keys respectively.
As the further improvement of this capacitive touch screen, this a plurality of second anti-interference ground wire is directly connected to this input/output interface respectively.
As the further improvement of this capacitive touch screen, be connected to this input/output interface after these a plurality of second anti-interference ground line parallels.
As the further improvement of this capacitive touch screen, this first anti-interference ground wire and this second anti-interference ground wire electrically connect by this input/output interface and external drive circuit respectively.
As the further improvement of this capacitive touch screen, this first anti-interference ground wire is the wall scroll cabling.
As the further improvement of this capacitive touch screen, the material of these a plurality of touch controlled keys is tin indium oxide or indium zinc oxide.
As the further improvement of this capacitive touch screen, the pattern of these a plurality of touch controlled keys is a rectangle.
This capacitive touch screen of the present utility model has anti-interference preferably effect and preferable product operation stability.
Description of drawings
Fig. 1 is a kind of part wire structures synoptic diagram of the capacitive touch screen relevant with the utility model.
Fig. 2 is the part wire structures synoptic diagram of the utility model capacitive touch screen first embodiment.
Fig. 3 is the part wire structures synoptic diagram of the utility model capacitive touch screen second embodiment.
Embodiment
Below in conjunction with accompanying drawing the utility model capacitive touch screen is described.
Seeing also Fig. 2, is the part wire structures synoptic diagram of the utility model capacitive touch screen first embodiment.This capacitive touch screen 2 comprises a plurality of touch controlled keys 20, a plurality of touch controlled key electrode cabling 22, first anti-interference ground wire 24, a plurality of second anti-interference ground wire 26 and I/O (I/O) interface 28.
These a plurality of touch controlled keys 20 are transparency conductive electrode, and in the present embodiment, its pattern is a rectangle, and according to the different designs needs, this touch controlled key 20 also can correspondingly change design shape.The material of this touch controlled key 20 can be tin indium oxide (ITO) or indium zinc oxide (IZO).
These a plurality of touch controlled key electrode cablings 22 should be electrically connected to this input/output interface 28 by a plurality of touch controlled keys 20 respectively.
This first anti-interference ground wire 24 is a single wire, and it is arranged on the edge of this capacitive touch screen 2, to play the effect of masked segment external signal.
This a plurality of second anti-interference ground wire 26 is separately positioned on the periphery of these a plurality of touch controlled keys 20, and is directly connected to this input/output interface 28 respectively.In the present embodiment, the periphery of each touch controlled key 20 is except these touch controlled key electrode cabling 22 parts, remainder all by 26 of this second anti-interference ground wires around, but be provided with at interval between this second anti-interference ground wire 26 and this touch controlled key 20, all do not contact.This second anti-interference ground wire 26 can further shield the interference of external signal to this touch controlled key 20, improves the whole interference free performance and the corresponding operational stability of this capacitive touch screen 2.
In the present embodiment, this first anti-interference ground wire 24 and this second anti-interference ground wire 26 electrically connect by this input/output interface 28 and external drive circuit (figure does not show) respectively, and this first anti-interference ground wire 24 all is transparent lead with this second anti-interference ground wire 26.
Seeing also Fig. 3, is the part wire structures synoptic diagram of the utility model capacitive touch screen second embodiment.This capacitive touch screen 3 comprises a plurality of touch controlled keys 30, a plurality of touch controlled key electrode cabling 32, first anti-interference ground wire 34 and a plurality of second anti-interference ground wire 36 and the input/output interface 38.
These a plurality of touch controlled keys 30 are transparency conductive electrode, and in the present embodiment, its pattern is a rectangle, and according to the different designs needs, these touch controlled key 30 electrodes also can correspondingly change design shape.The material of this touch controlled key 30 can be tin indium oxide or indium zinc oxide.
These a plurality of touch controlled key electrode cablings 32 should be electrically connected to this input/output interface 38 by a plurality of touch controlled keys 30 respectively.
This first anti-interference ground wire 34 is a single wire, and it is arranged on the edge of this capacitive touch screen 3, to play the part electromagnetic shielding action.
This a plurality of second anti-interference ground wire 36 be separately positioned on these a plurality of touch controlled keys 30 around, and it is connected to this input/output interface 38 after in parallel.In the present embodiment, the periphery of each touch controlled key 30 except touch controlled key electrode cabling 32 parts, remainder all by 36 of this second anti-interference ground wires around, but all do not contact between this second anti-interference ground wire 36 and this touch controlled key 30.This second anti-interference ground wire 36 can further shield the interference of external signal to this touch controlled key 30, improves the whole interference free performance and the corresponding operational stability of this capacitive touch screen 3.
In the present embodiment, this first anti-interference ground wire 34 and this second anti-interference ground wire 36 electrically connect by this input/output interface 38 and external drive circuit (figure does not show) respectively, and this first anti-interference ground wire 34 all is transparent lead with this second anti-interference ground wire 36.
Compared to this capacitive touch screen 2 of first embodiment, a plurality of these second anti-interference ground wires 36 of this capacitive touch screen 3 of present embodiment are connected to this input/output interface 38 after connecting by parallel way therebetween behind touch controlled key 30 peripheries.This connected mode can reduce the consumption of this second anti-interference ground wire 36 under the situation that guarantees anti-interference effect, and the wiring density that reduces this capacitive touch screen 3, and its wiring is simplified, and reduces the manufacture difficulty and the cost of manufacture of this capacitive touch screen 3.
In sum, this capacitive touch screen 2 of the present utility model and this capacitive touch screen 3 have anti-interference preferably effect and preferable product operation stability.
Only be preferred case study on implementation of the present utility model below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. capacitive touch screen, this capacitive touch screen comprises a plurality of touch controlled keys, a plurality of touch controlled key electrode cabling and the first anti-interference ground wire, this first anti-interference ground wire is arranged on the edge of this capacitive touch screen, these a plurality of touch controlled key electrode cablings electrically connect with these a plurality of touch controlled keys respectively, it is characterized in that: this capacitive touch screen further comprises a plurality of second anti-interference ground wire, and this a plurality of second anti-interference ground wire is looped around the periphery of these a plurality of touch controlled keys respectively.
2. capacitive touch screen according to claim 1 is characterized in that: the periphery of each touch controlled key except touch controlled key electrode cabling, remainder all respectively by this second anti-interference ground wire institute around.
3. capacitive touch screen according to claim 1 is characterized in that: be provided with at interval between this second anti-interference ground wire and this touch controlled key.
4. capacitive touch screen according to claim 1 is characterized in that: this capacitive touch screen further comprises input/output interface, and these a plurality of touch controlled key electrode cablings should be electrically connected to this input/output interface by a plurality of touch controlled keys respectively.
5. capacitive touch screen according to claim 4 is characterized in that: this a plurality of second anti-interference ground wire is directly connected to this input/output interface respectively.
6. capacitive touch screen according to claim 4 is characterized in that: be connected to this input/output interface after these a plurality of second anti-interference ground line parallels.
7. capacitive touch screen according to claim 4 is characterized in that: this first anti-interference ground wire and this second anti-interference ground wire electrically connect by this input/output interface and external drive circuit respectively.
8. capacitive touch screen according to claim 1 is characterized in that: this first anti-interference ground wire is the wall scroll cabling.
9. capacitive touch screen according to claim 1 is characterized in that: the pattern of these a plurality of touch controlled keys is a rectangle.
10. capacitive touch screen according to claim 1 is characterized in that: the material of these a plurality of touch controlled keys is tin indium oxide or indium zinc oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202368316U CN201897781U (en) | 2010-06-24 | 2010-06-24 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202368316U CN201897781U (en) | 2010-06-24 | 2010-06-24 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897781U true CN201897781U (en) | 2011-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202368316U Expired - Lifetime CN201897781U (en) | 2010-06-24 | 2010-06-24 | Capacitive touch screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN201897781U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019489A (en) * | 2012-12-17 | 2013-04-03 | 鸿富锦精密工业（深圳）有限公司 | Electronic device with capacitive touch screen |
| CN103051320A (en) * | 2011-10-14 | 2013-04-17 | 十速兴业科技（深圳）有限公司 | Circuit layout of touch button and detection method thereof |
| CN104063081A (en) * | 2013-03-22 | 2014-09-24 | 宸鸿科技(厦门)有限公司 | Touch panel and manufacturing method thereof |
| CN104238847A (en) * | 2013-06-13 | 2014-12-24 | 胜华科技股份有限公司 | Touch panel |
| CN104679310A (en) * | 2013-11-28 | 2015-06-03 | 天津富纳源创科技有限公司 | Control method of touch screen |
| EP2750008A3 (en) * | 2012-12-27 | 2016-07-06 | Wintek Corporation | Touch panel |
| EP2750009A3 (en) * | 2012-12-27 | 2017-01-11 | Wintek Corporation | Touch panel |
| CN108008861A (en) * | 2017-12-15 | 2018-05-08 | 北京京东方光电科技有限公司 | Array base palte, display module and electronic equipment for display module |
| CN108845721A (en) * | 2018-06-28 | 2018-11-20 | 广州视源电子科技股份有限公司 | Anti-interference capacitive screen and signal processing method thereof |
-
2010
- 2010-06-24 CN CN2010202368316U patent/CN201897781U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051320A (en) * | 2011-10-14 | 2013-04-17 | 十速兴业科技（深圳）有限公司 | Circuit layout of touch button and detection method thereof |
| CN103019489A (en) * | 2012-12-17 | 2013-04-03 | 鸿富锦精密工业（深圳）有限公司 | Electronic device with capacitive touch screen |
| EP2750008A3 (en) * | 2012-12-27 | 2016-07-06 | Wintek Corporation | Touch panel |
| EP2750009A3 (en) * | 2012-12-27 | 2017-01-11 | Wintek Corporation | Touch panel |
| CN104063081A (en) * | 2013-03-22 | 2014-09-24 | 宸鸿科技(厦门)有限公司 | Touch panel and manufacturing method thereof |
| CN104238847A (en) * | 2013-06-13 | 2014-12-24 | 胜华科技股份有限公司 | Touch panel |
| CN104679310A (en) * | 2013-11-28 | 2015-06-03 | 天津富纳源创科技有限公司 | Control method of touch screen |
| CN108008861A (en) * | 2017-12-15 | 2018-05-08 | 北京京东方光电科技有限公司 | Array base palte, display module and electronic equipment for display module |
| CN108008861B (en) * | 2017-12-15 | 2021-09-03 | 北京京东方光电科技有限公司 | Array substrate for display assembly, display assembly and electronic equipment |
| CN108845721A (en) * | 2018-06-28 | 2018-11-20 | 广州视源电子科技股份有限公司 | Anti-interference capacitive screen and signal processing method thereof |
| CN108845721B (en) * | 2018-06-28 | 2021-03-05 | 广州视源电子科技股份有限公司 | Anti-interference capacitive screen and signal processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110713 |
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| CX01 | Expiry of patent term |