CN202600671U - Novel projected capacitive touch screen - Google Patents
Novel projected capacitive touch screen Download PDFInfo
- Publication number
- CN202600671U CN202600671U CN 201220246851 CN201220246851U CN202600671U CN 202600671 U CN202600671 U CN 202600671U CN 201220246851 CN201220246851 CN 201220246851 CN 201220246851 U CN201220246851 U CN 201220246851U CN 202600671 U CN202600671 U CN 202600671U
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- CN
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- Prior art keywords
- touch screen
- projected capacitive
- capacitive touch
- electric conducting
- electrode strip
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Abstract
The utility model provides a novel projected capacitive touch screen which comprises transparent substrates and electric conducting layers covered on the transparent substrates. The electric conducting layers comprise electrode strips, wherein more than two lead wires connected with an external circuit are connected onto each electrode strip. One electric conducting layer serves as a row matrix, and the electrode strips of the row matrix are evenly separated through insulators and are ranked transversely. One electric conducting layer serves as a column matrix, and the electrode strips of the column matrix are evenly separated through insulators and are ranked longitudinally. The two layers are perpendicular to each other. By aid of the structure that all elements are perpendicular to each other, the multi-point contact effect is achieved, scanning time is greatly shortened, signal to noise ratio is improved, and the novel projected capacitive touch screen is accurate in touch and sensitive in response. In addition, product volume production yield is high, and rejection rate and cost are low.
Description
[technical field]
The utility model relates to a kind of projection-type touch-screen, and particularly a kind of novel projected capacitive touch screen belongs to the touch screen technology field.
[background technology]
Continuous development along with scientific and technological level; Touch-screen as a kind of simply, interpersonal interactive mode easily; Be widely used in our daily life every field, like mobile phone, media player, navigational system, digital camera, DPF, PDA, game station, display, electrical equipment control, Medical Devices or the like.
Common touch screen technology comprises resistive touch screen and projected capacitive touch screen and the surface capacitance type touch screen that is used for other application, surface acoustic wave touch screen and the infrared touch panel that is applicable to mobile device and consumption electronic product.
Wherein projected capacitive touch screen is because possess the function of multiple point touching, so on consumer-electronics applications, yield unusually brilliant results.Be provided with the conductive layer that is overlying on the base material in the projected capacitive touch screen, conductive layer is generally the ITO conductive layer, is distributed with some electrode strips on the conductive layer.End points at each strip electrode is drawn with lead (can process through plating and printing dual mode), through flexible PCB lead is drawn with the external circuit control chip then to be connected.The row of the internal electrode of projected capacitive touch screen and row, row and row, or the electric capacity that can produce between row and the row.Its principle of work is to touch through staff to have changed the capacitance profile of electrode strip in the touch place, thereby be identified.People's the big minor matter of finger area is certain; Finger touch causes that electric capacity change value also is certain, if internal capacitance is excessive, can cause finger touch after; The capacitance variations that the capacitance variations that causes produces with being interfered is similar, thereby can not normally discern finger touch.So require the inner electric capacity of projected capacitive touch screen more little good more, the ratio of the electric capacity change value that causes after the finger touch like this and the value of former electric capacity is just big more.The big more representative signal to noise ratio (S/N ratio) of ratio is big more, and is also just more accurate to the judgement of touch location.The size of this electric capacity depends on the resistance size of internal electrode bar.The electrode strip resistance is big more, and the electric capacity of generation is big more.In addition because the working method of projected capacitive touch screen through control chip be line by line/column scan, every scanning one strip electrode all comes work through charging, discharge.Electric capacity is big more, and the charge and discharge time that needs so will be long more.
Conductive layer will be overlying on the base material, and the base material of general projected capacitive touch screen all is a glass, projected capacitive touch screen commonly used in the market then; Mostly its ITO figure is square or rhombus; Event user finger makes that the face resistance of projected capacitive touch screen is bigger, because of the face of making projected capacitive touch screen hinders to be advisable below 150 ohm when touching; So cause the touch weak effect of projected capacitive touch screen, and its scrappage is high.
So be necessary to design these defectives that a new projected capacitive touch screen remedies prior art.
[utility model content]
The purpose of the utility model is to address the above problem; And a kind of novel projected capacitive touch screen is provided, and realize the effect of multiple point touching, can shorten sweep time greatly, improve signal to noise ratio (S/N ratio); Make it to touch accurately, be quick on the draw, and the volume production yield of product is high, scrappage and cost are low.
In order to achieve the above object; The utility model provides a kind of novel projected capacitive touch screen; Comprise transparency carrier and be overlying on the conductive layer on the said transparency carrier, said conductive layer comprises electrode strip, is connected with the lead that is connected with external circuit more than two on the every said electrode strip; One deck is as row matrix, and its electrode strip is evenly separated by insulator and is transversely arranged, and one deck is a column matrix, and its electrode strip is evenly separated by insulator and is vertical arrangement, and two-layer mutual layer plumbness.
Form one deck as row matrix through mutually combining of above-mentioned each element; Its electrode strip is evenly separated by insulator and is transversely arranged; One deck is a column matrix, and its electrode strip is evenly separated by insulator and is vertical arrangement, has realized the effect of multiple spot contact; Shorten sweep time greatly, improve signal to noise ratio (S/N ratio), make it to touch accurately, be quick on the draw; And the volume production yield of product height, scrappage and cost are low.
[description of drawings]
Fig. 1 is a kind of novel projected capacitive touch screen structural representation of the utility model.
[embodiment]
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, a kind of projected capacitive touch screen 1 comprises transparency carrier and is overlying on the conductive layer 2 on the said transparency carrier that said conductive layer 2 comprises electrode strip 2.1, is connected with the lead that is connected with external circuit more than two on the every said electrode strip 2.1; The electrode strip 2.1 of levels conductive layer 2 does not join mutually; One deck is as row matrix 2.1.1, and its electrode strip 2.1 is evenly separated by insulator and is transversely arranged, and one deck is column matrix 2.1.2; Its electrode strip 2.1 is evenly separated by insulator and is vertical arrangement, and two-layer mutually in vertical state.Column electrode number and row number of electrodes depend primarily on screen size, and screen is big more, and the electrode strip number that needs is many more.In addition, said conductive layer is provided with the touch sensible parts, and said conductive layer is the ITO conductive layer.Said touch sensible parts are that one deck is as row matrix 2.1.1; Its electrode strip is evenly separated by insulator and is transversely arranged; One deck is column matrix 2.1.2, and its electrode strip 2.1 is evenly separated by insulator and is vertical arrangement, has realized the effect of multiple spot contact; Shorten sweep time greatly, improve signal to noise ratio (S/N ratio), make it to touch accurately, be quick on the draw; And the volume production yield of product height, scrappage and cost are low.
A kind of novel projected capacitive touch screen of the utility model is compared with existing touch-screen, has following advantage: said touch sensible parts be one deck as row matrix, its electrode strip is evenly separated by insulator and is transversely arranged; One deck is a column matrix; Its electrode strip is evenly separated by insulator and is vertical arrangement, realizes the effect of multiple point touching, can shorten sweep time greatly, improve signal to noise ratio (S/N ratio); Make it to touch accurately, be quick on the draw, and the volume production yield of product is high, scrappage and cost are low.
Embodiment only is the preferred optimum implementation of the utility model in sum; Unintelligible is that the protection domain of the utility model is limited; For adjustment that does not exceed the utility model technical scheme and the change that the technical work personnel in this field do according to present embodiment, should think and drop in the protection domain of the utility model.
Claims (1)
1. novel projected capacitive touch screen, it is characterized in that: comprise transparency carrier and be overlying on the conductive layer on the said transparency carrier, said conductive layer comprises electrode strip, is connected with the lead that is connected with external circuit more than two on the every said electrode strip; One deck is as row matrix, and its electrode strip is evenly separated by insulator and is transversely arranged, and one deck is a column matrix, and its electrode strip is evenly separated by insulator and is vertical arrangement, and two-layer mutual layer plumbness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246851 CN202600671U (en) | 2012-05-25 | 2012-05-25 | Novel projected capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246851 CN202600671U (en) | 2012-05-25 | 2012-05-25 | Novel projected capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600671U true CN202600671U (en) | 2012-12-12 |
Family
ID=47318195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220246851 Expired - Fee Related CN202600671U (en) | 2012-05-25 | 2012-05-25 | Novel projected capacitive touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202600671U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412691A (en) * | 2013-07-17 | 2013-11-27 | 欧浦登（顺昌）光学有限公司 | Single-layer two-sided electric lead membrane capacitive touch screen |
| CN103412692A (en) * | 2013-07-17 | 2013-11-27 | 欧浦登（顺昌）光学有限公司 | Double-layer single-face wire film capacitive touch screen |
-
2012
- 2012-05-25 CN CN 201220246851 patent/CN202600671U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412691A (en) * | 2013-07-17 | 2013-11-27 | 欧浦登（顺昌）光学有限公司 | Single-layer two-sided electric lead membrane capacitive touch screen |
| CN103412692A (en) * | 2013-07-17 | 2013-11-27 | 欧浦登（顺昌）光学有限公司 | Double-layer single-face wire film capacitive touch screen |
| CN103412692B (en) * | 2013-07-17 | 2014-07-09 | 欧浦登（顺昌）光学有限公司 | Double-layer single-face wire film capacitive touch screen |
| CN103412691B (en) * | 2013-07-17 | 2014-07-09 | 欧浦登（顺昌）光学有限公司 | Single-layer two-sided electric lead membrane capacitive touch screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen contact Electronics Co., Ltd. Assignor: Zhang Rengui Contract record no.: 2014440020424 Denomination of utility model: Novel projected capacitive type touch screen Granted publication date: 20121212 License type: Exclusive License Record date: 20141216 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20150525 |
|
| EXPY | Termination of patent right or utility model |