CN105302401A - Projective-capacitive touch screen - Google Patents
Projective-capacitive touch screen Download PDFInfo
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- CN105302401A CN105302401A CN201510795098.9A CN201510795098A CN105302401A CN 105302401 A CN105302401 A CN 105302401A CN 201510795098 A CN201510795098 A CN 201510795098A CN 105302401 A CN105302401 A CN 105302401A
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- electrode layer
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- touch screen
- capacitive touch
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Abstract
The invention discloses a projective-capacitive touch screen which comprises a transverse electrode layer and a longitudinal electrode layer. Each electrode layer is symmetrically divided into a first electrode layer area and a second electrode layer area. The number of electrodes guided out of the first electrode layer area is equal to that of electrodes guided out of the second electrode layer area, and any two adjacent electrodes guided out of the first electrode layer area in the same electrode layer are connected with any two nonadjacent electrodes guided out of the second electrode layer area through wires. The problems that a large-size touch screen is provided with more pins and needs more chips are solved.
Description
Technical field
The present invention relates to a kind of projected capacitive touch screen, particularly relating to one, to solve large scale touch-screen pin many, need a kind of projected capacitive touch screen that chip is many.
Background technology
The mark that projected capacitive touch screen has become smart mobile phone through development is in a few years put, and more and more applied at industry-by-industry gradually, but be mainly still applied to mobile phone, on dull and stereotyped this kind of small-medium size screen, picture computer monitor, this kind of large scale screen of the TV appearance formula touch-screen applications that powers on also gets more and more, but most of IC is mostly still mainly used in mobile phone, dull and stereotyped, generally, the touch-screen size of IC chip support is all no more than 10 cun, giant-screen projected capacitive touch screen electrode number is many, larger to the demand of IC chip pin quantity, make the projected capacitive touch screen that large-sized projected capacitive touch screen just needs several such IC chip parallel connections being supported more giant-screen, the IC chip that the size of screen is more wanted more is greatly more.
Summary of the invention
The technical problem to be solved in the present invention is: the touch-screen size of IC chip support is all no more than 10 cun, giant-screen projected capacitive touch screen electrode number is many, larger to the demand of IC chip pin quantity, make the projected capacitive touch screen that large-sized projected capacitive touch screen just needs several such IC chip parallel connections being supported more giant-screen, the IC chip that the size of screen is more wanted more is greatly more.
In order to overcome the above problems, technical scheme provided by the invention is: a kind of projected capacitive touch screen, comprise transverse electrode layer and longitudinal electrode layer, every layer of electrode layer symmetry is divided into electrode layer first area and electrode layer second area, the number of electrodes that described electrode layer first area is drawn is identical with the number of electrodes that electrode layer second area is drawn, and non-conterminous any two electrodes that adjacent any two electrodes that electrode layer first area is drawn described in same electrode layer are drawn by wire and electrode layer second area are connected.Take this structure, the electrode of same for touch-screen electrode layer is together in parallel between two, be connected to the same I/O port of IC chip, the demand to chip I/O port is reduced with this, when electrode connects between two time, by number of electrodes divided by two, the electrode that electrode layer first area is drawn arranges in order, every strip electrode draws a wire, and every bar wire is all connected with one of them electrode of electrode layer second area, when parallel connection, ensure that putting in order of electrode layer second area electrode not only can not be identical with electrode layer first area, also to ensure that the adjacent electrode in electrode layer first area is when being connected with the electrode of electrode layer second area, it is interval sequence, such as, electrode layer first area electrode spread order is 1, 2, 3, 4, 5, 1 putting in order of electrode layer first area, 3, 5, 2, 4.
Further, described transverse electrode layer and longitudinal electrode layer adopt ITO, IZO, Nano Silver or CNT, and more excellent, described transverse electrode layer and longitudinal electrode layer are ITO layer.
Further, a kind of projected capacitive touch screen, comprises upper strata base material and lower floor's base material, and described transverse electrode layer is located in described two-layer base material on arbitrary base material, and described longitudinal electrode layer to be arranged in described two-layer base material on another base material.Adopt double layer substrates structure, reduce production cost and manufacture difficulty.
Further, described base material adopts PET, PC transparent organic polymer material.
Compared with prior art, the invention has the beneficial effects as follows: effectively can reduce the demand of giant-screen projected capacitive touch screen to IC chip pin quantity, the demand number of large scale projected capacitive touch screen to chip pin is made to be reduced to original 1/2, with part solve make large scale projected capacitive touch screen need multiple chip with the use of problem, chip consumption be can effectively reduce, production cost and manufacture difficulty reduced.
Accompanying drawing explanation
Figure 1 shows that the electrode schematic diagram in parallel in the present invention;
Figure 2 shows that the double layer substrates structural representation in the present invention;
Figure 3 shows that the touch-screen touch location schematic diagram in the present invention.
Embodiment
By reference to the accompanying drawings, embodiments of the present invention are specifically described;
A kind of projected capacitive touch screen, comprise transverse electrode layer and longitudinal electrode layer, electrode layer is by metal material extraction electrodes such as silver or copper, again by binding FPC, the mainboard of access user, improvements are, every layer of electrode layer symmetry is divided into electrode layer first area and electrode layer second area, the number of electrodes that described electrode layer first area is drawn is identical with the number of electrodes that electrode layer second area is drawn, non-conterminous any two electrodes that adjacent any two electrodes that electrode layer first area is drawn described in same electrode layer are drawn by wire and electrode layer second area are connected.The electrode of same for touch-screen electrode layer is together in parallel between two, be connected to the same I/O port of IC chip, the demand to chip I/O port is reduced with this, when electrode connects between two time, by number of electrodes divided by two, the electrode that electrode layer first area is drawn arranges in order, every strip electrode draws a wire, and every bar wire is all connected with one of them electrode of electrode layer second area, when parallel connection, ensure that putting in order of electrode layer second area electrode not only can not be identical with electrode layer first area, also to ensure that the adjacent electrode in electrode layer first area is when being connected with the electrode of electrode layer second area, it is interval sequence, such as, as Fig. 1, electrode layer first area electrode spread order is 1, 2, 3, 4, 5, 6, 1 putting in order of electrode layer first area, 3, 5, 2, 4, 6.
Generally, described transverse electrode layer and longitudinal electrode layer adopt ITO, IZO, Nano Silver or CNT, and more excellent, described transverse electrode layer and longitudinal electrode layer are ITO layer.
On the basis of above-mentioned improvement, as Fig. 2, a kind of projected capacitive touch screen, comprise upper strata base material and lower floor's base material, described transverse electrode layer is located in described two-layer base material on arbitrary base material, and described longitudinal electrode layer is arranged in described two-layer base material on another base material, preferably, described base material adopts PET, PC transparent organic polymer material, and the unitized construction of upper strata base material-electrode layer and the unitized construction of lower floor's base material-electrode layer are by transparent optical cement lamination.
The number of electrodes of the indoor design circuit of projected capacitive touch screen is mainly directly proportional with screen size.Screen is larger, and the electrode of needs is more, and (the length and width size of visible area, divided by the number between (4mm-5mm), then rounds, and the numeral obtained is exactly the electric progression of upper and lower layer.The scope of 4mm-5mm is an experience digit, if require that the touch of screen is more precisely just peeked toward the lower limit of this scope; If less demanding to the accuracy touched, the upper limit just toward this scope is peeked)
Such as our the electric progression needed for product of design is originally 12*10 respectively, and as shown in Figure 1, adopting the present invention to design rear required number of electrodes is 6*5.Shown in institute Fig. 3, when our point touching shields time, can trigger horizontal 5,2 electrodes, 5,2 longitudinal electrodes, because No. 2 electrodes and No. 5 electrodes are discontinuous in sequence number, so we can know that this position is at use electrode layer first area of the present invention or electrode layer second area, this coordinate put just can be calculated by certain algorithm by IC.
It is to be understood that above-mentioned embodiment has done more detailed text description to the thinking that relates to of the present invention; but these text descriptions; just the simple text of mentality of designing of the present invention is described; instead of the restriction to mentality of designing of the present invention; any combination not exceeding mentality of designing of the present invention; increase or amendment, all fall within the scope of protection of the present invention.
Claims (5)
1. a projected capacitive touch screen, comprise transverse electrode layer and longitudinal electrode layer, it is characterized in that, every layer of electrode layer symmetry is divided into electrode layer first area and electrode layer second area, the number of electrodes that described electrode layer first area is drawn is identical with the number of electrodes that electrode layer second area is drawn, and non-conterminous any two electrodes that adjacent any two electrodes that electrode layer first area is drawn described in same electrode layer are drawn by wire and electrode layer second area are connected.
2. a kind of projected capacitive touch screen as claimed in claim 1, is characterized in that, described transverse electrode layer and longitudinal electrode layer adopt ITO, IZO, Nano Silver or CNT.
3. a kind of projected capacitive touch screen as claimed in claim 2, is characterized in that, described transverse electrode layer and longitudinal electrode layer are ITO layer.
4. a kind of projected capacitive touch screen as described in claim 1-3 any one, it is characterized in that, comprise upper strata base material and lower floor's base material, described transverse electrode layer is located in described two-layer base material on arbitrary base material, and described longitudinal electrode layer to be arranged in described two-layer base material on another base material.
5. a kind of projected capacitive touch screen as claimed in claim 4, is characterized in that, described base material adopts PET, PC transparent organic polymer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795098.9A CN105302401A (en) | 2015-11-18 | 2015-11-18 | Projective-capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795098.9A CN105302401A (en) | 2015-11-18 | 2015-11-18 | Projective-capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105302401A true CN105302401A (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510795098.9A Pending CN105302401A (en) | 2015-11-18 | 2015-11-18 | Projective-capacitive touch screen |
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| CN (1) | CN105302401A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070273560A1 (en) * | 2006-05-25 | 2007-11-29 | Cypress Semiconductor Corporation | Low pin count solution using capacitance sensing matrix for keyboard architecture |
| CN201465069U (en) * | 2009-06-22 | 2010-05-12 | 比亚迪股份有限公司 | Multi-point touch screen |
| CN102193669A (en) * | 2010-03-16 | 2011-09-21 | 乐金显示有限公司 | A touch panel and method of manufacturing the same |
| CN103336636A (en) * | 2013-06-14 | 2013-10-02 | 业成光电（深圳）有限公司 | Touch panel and touch display device |
| CN205247356U (en) * | 2015-11-18 | 2016-05-18 | 南京华睿川电子科技有限公司 | Projected capacitive touch screen |
-
2015
- 2015-11-18 CN CN201510795098.9A patent/CN105302401A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070273560A1 (en) * | 2006-05-25 | 2007-11-29 | Cypress Semiconductor Corporation | Low pin count solution using capacitance sensing matrix for keyboard architecture |
| CN201465069U (en) * | 2009-06-22 | 2010-05-12 | 比亚迪股份有限公司 | Multi-point touch screen |
| CN102193669A (en) * | 2010-03-16 | 2011-09-21 | 乐金显示有限公司 | A touch panel and method of manufacturing the same |
| CN103336636A (en) * | 2013-06-14 | 2013-10-02 | 业成光电（深圳）有限公司 | Touch panel and touch display device |
| CN205247356U (en) * | 2015-11-18 | 2016-05-18 | 南京华睿川电子科技有限公司 | Projected capacitive touch screen |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160203 |
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| RJ01 | Rejection of invention patent application after publication |