CN205230008U - Capacitive touch panel's independent button and connection structure of touch -control chip - Google Patents
Capacitive touch panel's independent button and connection structure of touch -control chip Download PDFInfo
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- CN205230008U CN205230008U CN201521033434.8U CN201521033434U CN205230008U CN 205230008 U CN205230008 U CN 205230008U CN 201521033434 U CN201521033434 U CN 201521033434U CN 205230008 U CN205230008 U CN 205230008U
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Abstract
The utility model is suitable for a capacitive touch panel technical field provides a capacitive touch panel's independent button and connection structure of touch -control chip, and independent button is including setting up response electrode and the driving electrode on the sensor top surface. The touch -control chip sets up on the flexible circuit board, the end of the same name that is provided with first, second port on the flexible circuit board and corresponds with first port, and first port is connected with the sensor electricity in the screen body, and the second port is connected with the driving electrode electricity, responds to that the electrode passes through first wire and end of the same name is electric is connected. The utility model discloses a to the modification of existing design, under the circumstances of costneutrality, realized that independent button and touch -control chip constitute the connected mode of parallelly connected sharing, and the shunt impedance far is lighter than series impedance, so the response electrode influence of sensor is very little in the screen of the influence electricity pole pair in the independent button, the action of button can not influence the touch of the screen body.
Description
Technical field
The utility model belongs to capacitance touch screen technical field, particularly relates to a kind of Independent keys of capacitance touch screen and the syndeton of touch chip.
Background technology
Have the multiple mode realizing touch sensible in touch-screen field, popular have resistance-strain type touch technology (i.e. electric resistance touch screen), and existing popular capacitive strain formula touch technology (i.e. capacitance touch screen).
Capacitive strain formula touch technology generally has two kinds of modes, and one is self-inducting, and one is mutual inductive, and the multipoint-touch-technology of current popular is based on mutual inductive touch technology.
Multipoint-touch-technology can realize handwriting input and key-press input mode, be generally apply very extensively, an Independent keys can be increased as the capacitance touch screen such as IPAD, mobile phone, such as, return button, home button and other function buttons, this Independent keys is mutual tolerance principle.As shown in Figure 1, add an independent induction electrode 11 by an independent drive electrode 12 and complete Independent keys 1 function, and after drive electrode 12 is connected with touch chip 3, induction electrode 11 is connected in series with sensor 100, be connected to touch chip 3.Induction electrode 11 is connected in series with sensor 100 and Independent keys 1.Due to induction electrode 11 employing is share and series system, cause the impedance of whole piece induction channels large, easily interference is produced to the induction electrode of sensor 100 in screen body, cause this shared induction channels DIFF value lower, affect touch screen performance, extreme case can hop or no touch.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Independent keys of capacitance touch screen and the syndeton of touch chip, be intended to solve Independent keys of the prior art adopt series connection share mode be connected with touch chip existing for the problem of impact touch performance.
The utility model realizes like this, a kind of Independent keys of capacitance touch screen and the syndeton of touch chip, comprise Independent keys, flexible PCB and touch chip, described Independent keys comprises and is arranged at induction electrode on sensor end face and drive electrode, described touch chip is arranged on described flexible PCB, described flexible PCB is provided with the first port and the second port, described first port is connected with the sensor electrical in screen body, described second port is electrically connected with described drive electrode, described flexible PCB is also provided with and the Same Name of Ends corresponding to described first port, described induction electrode is electrically connected with described Same Name of Ends by the first wire.
Further, described induction electrode, drive electrode all extend elongated portion towards the side of the other side, and the elongated portion of described induction electrode, drive electrode is alternately distributed successively.
Further, the periphery of described first wire is equipped with ITO ground wire.
Further, described first wire is silver-colored line.
Further, described second port is electrically connected with described drive electrode by the second wire.
Further, described second wire is silver-colored line.
Further, described Independent keys is home key or returns button.
Further, the induction electrode of described Independent keys is also provided with link, and described link is arranged on described induction electrode one end near described Same Name of Ends.
Compared with prior art, beneficial effect is the utility model: the utility model is provided with the Same Name of Ends corresponding with the first port on flexible PCB, and induction electrode is directly electrically connected with Same Name of Ends by the first wire.By the amendment to existing design, when not increasing cost, achieve Independent keys and form the connected mode shared in parallel with touch chip, and parallel impedance is much smaller than series impedance, so the induction electrode in Independent keys is on induction electrode impact very little (being namely very little to RC parameter influence) of sensor in screen, the action of button can not affect the touch of screen body.
Accompanying drawing explanation
Fig. 1 is a kind of Independent keys of capacitance touch screen of the prior art and the syndeton of touch chip.
Fig. 2 is a kind of Independent keys of capacitance touch screen of providing of the utility model embodiment and the syndeton of touch chip.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 2, be a preferred embodiment of the present utility model, a kind of Independent keys of capacitance touch screen and the syndeton of touch chip, comprise Independent keys 1, flexible PCB 2 and touch chip 3.Independent keys 1 can be home key, return button or other independent function button.
Independent keys 1 comprises and is arranged at induction electrode 11 on sensor 100 end face and drive electrode 12, and induction electrode 11, drive electrode 12 all extend elongated portion 111,121 towards the side of the other side; The elongated portion 111,121 of induction electrode 11, drive electrode 12 is alternately distributed successively, forms the pattern of an individual layer in the end face of sensor 100.
Touch chip 3 is arranged on flexible PCB 2, flexible PCB 2 is provided with the first port 21, second port 22 and with the Same Name of Ends 23 corresponding to the first port 21.First port 21 is electrically connected with the sensor 100 in screen body, and induction electrode 11 is electrically connected with Same Name of Ends 23 by the first wire 4, and the second port 22 is electrically connected with drive electrode 12 by the second wire 5.In practicing, silver-colored line preferentially selected by first, second above-mentioned wire 4,5.
When finger or capacitance pen touch-control are to Independent keys 1 position, capacitance touching control chip 3 can detect the change (DIFF value change) of side to Independent keys 1 place electric capacity, indicates touch, then reports key assignments, realize man-machine interaction.The present embodiment is provided with the Same Name of Ends 23 corresponding with the first port 21 on flexible PCB 2, and induction electrode 11 is directly electrically connected with Same Name of Ends 23 by the first wire 4.By the amendment to existing design, when not increasing cost, achieve Independent keys 1 and form the connected mode shared in parallel with touch chip 3, and parallel impedance is much smaller than series impedance, so the induction electrode 11 in Independent keys 1 is on induction electrode impact very little (being namely very little to RC parameter influence) of sensor 100 in screen.
Particularly, the induction electrode 11 of above-mentioned Independent keys 1 is also provided with link 112, and link 112 is arranged on induction electrode 11 one end near Same Name of Ends 23.This design modifying Independent keys 1 pattern, the cabling that makes it be more suitable for the first wire 4 changes, and improves sensitivity.
Further, the periphery of the first wire 4 is equipped with ITO ground wire (not shown), thus can play jamproof effect, avoids the situation that mistaken touch occurs because hand touches the first wire 4, makes Independent keys 1 and screen physical efficiency steady operation.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. the Independent keys of a capacitance touch screen and the syndeton of touch chip, comprise Independent keys, flexible PCB and touch chip, described Independent keys comprises and is arranged at induction electrode on sensor end face and drive electrode, described touch chip is arranged on described flexible PCB, described flexible PCB is provided with the first port and the second port, described first port is connected with the sensor electrical in screen body, described second port is electrically connected with described drive electrode, it is characterized in that, described flexible PCB is also provided with and the Same Name of Ends corresponding to described first port, described induction electrode is electrically connected with described Same Name of Ends by the first wire.
2. the Independent keys of capacitance touch screen as claimed in claim 1 and the syndeton of touch chip, it is characterized in that, described induction electrode, drive electrode all extend elongated portion towards the side of the other side, and the elongated portion of described induction electrode, drive electrode is alternately distributed successively.
3. the Independent keys of capacitance touch screen as claimed in claim 1 and the syndeton of touch chip, it is characterized in that, the periphery of described first wire is equipped with ITO ground wire.
4. the Independent keys of capacitance touch screen as claimed in claim 2 or claim 3 and the syndeton of touch chip, it is characterized in that, described first wire is silver-colored line.
5. the Independent keys of capacitance touch screen as claimed in claim 1 and the syndeton of touch chip, is characterized in that, described second port is electrically connected with described drive electrode by the second wire.
6. the Independent keys of capacitance touch screen as claimed in claim 5 and the syndeton of touch chip, it is characterized in that, described second wire is silver-colored line.
7. as the Independent keys of capacitance touch screen in claim 1,2,3,5 or 6 as described in any one and the syndeton of touch chip, it is characterized in that, described Independent keys is home key or returns button.
8. as the Independent keys of capacitance touch screen in claim 1,2,3,5 or 6 as described in any one and the syndeton of touch chip, it is characterized in that, the induction electrode of described Independent keys is also provided with link, and described link is arranged on described induction electrode one end near described Same Name of Ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521033434.8U CN205230008U (en) | 2015-12-11 | 2015-12-11 | Capacitive touch panel's independent button and connection structure of touch -control chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521033434.8U CN205230008U (en) | 2015-12-11 | 2015-12-11 | Capacitive touch panel's independent button and connection structure of touch -control chip |
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| Publication Number | Publication Date |
|---|---|
| CN205230008U true CN205230008U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521033434.8U Active CN205230008U (en) | 2015-12-11 | 2015-12-11 | Capacitive touch panel's independent button and connection structure of touch -control chip |
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| CN (1) | CN205230008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422914A (en) * | 2017-07-26 | 2017-12-01 | 武汉天马微电子有限公司 | A kind of contact panel, button channel multiplexing method and device |
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2015
- 2015-12-11 CN CN201521033434.8U patent/CN205230008U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422914A (en) * | 2017-07-26 | 2017-12-01 | 武汉天马微电子有限公司 | A kind of contact panel, button channel multiplexing method and device |
| CN107422914B (en) * | 2017-07-26 | 2020-11-06 | 武汉天马微电子有限公司 | Touch panel, and key channel multiplexing method and device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, 39 Jin Yuan Road, Henggang street, Shenzhen street, Longgang District, Guangdong, China Patentee after: Akita Shenzhen microelectronics Limited by Share Ltd Address before: 518000, 39 Jin Yuan Road, Henggang street, Shenzhen street, Longgang District, Guangdong, China Patentee before: Shenzhen AV-Display Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |