CN101853113A - Capacitive touch pad with comb-shaped electrode - Google Patents
Capacitive touch pad with comb-shaped electrode Download PDFInfo
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- CN101853113A CN101853113A CN201010168595A CN201010168595A CN101853113A CN 101853113 A CN101853113 A CN 101853113A CN 201010168595 A CN201010168595 A CN 201010168595A CN 201010168595 A CN201010168595 A CN 201010168595A CN 101853113 A CN101853113 A CN 101853113A
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- electrode
- stitching
- extension line
- capacitive touch
- induction
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Abstract
The invention relates to a capacitive touch pad with comb-shaped electrodes, which comprises a transparent substrate and inductive electrodes. The inductive electrodes are arranged on the transparent substrate and comprise a group of transverse electrode wire traces, a group of longitudinal electrode wire traces and leading-out wires connected with the I/O ports of a touch chip, wherein the transverse electrode wire traces intersect with the longitudinal electrode wire traces. The invention is characterized in that at least partial leading-out wires are connected with the electrode wire traces in a way that one leading-out wire corresponds to a plurality of electrode wire traces. By adopting the arrangement, one I/O port of the touch chip corresponds to one leading-out wire and one leading-out wire can correspond to a plurality of electrode wire traces. Thereby, the number of the electrode wire traces in a touch area can be multiplied, the number of the electrodes can be multiplied, the distribution of the electrodes is kept to be even, the density of charges distributed on the capacitive touch pad is enabled to be changed more stably, the linearity of an electric field is enabled to be more stable, the coupling capacitance on the touch area is improved and the accuracy and the sensitivity of the touch pad are improved.
Description
Technical field
The present invention relates to a kind of Trackpad, relate in particular to a kind of capacitive touch control plate that contains comb-shaped electrode.
Background technology
Capacitive touch control plate has been widely applied in each electronic product, for example mobile phone, mp4, POS terminal etc.The characteristics of capacitive touch control plate are that transmitance height and touch are exerted pressure and needn't be exerted oneself, and can resist abominable external environment, for example: water, temperature variation, so humidity is long service life, survey when can also realize a plurality of touch point during work, manipulate humanized.
Capacitive touch control plate generally comprises transparency carrier and induction electrode, and induction electrode is located on the transparency carrier, and the lead-in wire of induction electrode is electrically connected with testing circuit.Be provided with under the transparent situation of two substrates, wherein a substrate can be used as dielectric layer; Under the situation that a transparency carrier only is set, also layer protecting film should be set at the upper surface of induction electrode, the protection induction electrode is avoided damaging and as the effect of dielectric layer.The principle of induction of capacitive touch control plate is not with before sense of touch face (being diaphragm or transparency carrier) contacts at finger; system can produce a stray capacitance between induction electrode and transparency carrier; promptly form an electric field; when some arbitrarily on the finger contact sense of touch face (being diaphragm or transparency carrier); because finger is a conductor; can be used as a capacitor plate; induction electrode also can be used as a capacitor plate; and sense of touch face (being diaphragm or transparency carrier) is as a dielectric layer; then point; diaphragm and induction electrode form a coupling capacitance; the electric capacity charge effects can appear; and then generation capacitance variations; carry or external testing circuit by display device, can detect this changes in capacitance, calculate and determine position contacting.
Estimate capacitive touch control plate three key indexs are arranged: the width of the linearity of electric field, the complexity of induction electrode and induction electrode; Wherein the linearity of electric field is relevant with the accuracy and the sensitivity of capacitive touch control plate, and the complexity of induction electrode is related to manufacturing cost, and the width of induction electrode directly influences the size of the scope utilized of Trackpad.Induction electrode is to be made of the electrode stitching that is arranged on the transparency carrier, the be staggered transparency electrode number that forms of electrode stitching is many more and distributing position is even more, then the closeness of the CHARGE DISTRIBUTION of whole capacitor formula Trackpad changes more stably, opposite then be more violent variation, around this principle, can revise, improve the linearity of electric field.
Therefore, how improving the electric field linearity of capacitive touch control plate, reduce the complexity of pattern and the width that reduces induction electrode, is that the capacitive touch control plate deviser endeavours improved target.
Traditional capacitive touch control plate, as shown in Figure 1, Trackpad induction electrode stitching X1～Xn, Y1～Yn are connected to touch-control chip I port by electrode interface 101 and the conductive component that adds, induction electrode stitching by X, Y two each some of vertical direction intersects to form a plane touch-control scope; The corresponding electrode stitching of each touch-control chip I port, under the situation that the quantity of touch-control chip I port can not increase, the electrode stitching that capacitive touch control plate is arranged also can not increase, and the induction electrode stitching quantity of touch area 100 is determined by the area size of touch area 100.This traditional induction electrode stitching design is by the dense degree of the area determining electrode stitching of the quantity of touch-control chip I port and Trackpad, cause the coupling capacitance between the induction electrode, perhaps induction electrode and human body or greatly between coupling capacitance restricted, be that existing electric field and the electric field that produces because of touch-control all are restricted, influence the linear smoothness of electric field, cause the signal sensitivity of capacitive touch control plate on the hardware can only reach certain degree thus, and under certain particular surroundings, may not reach request for utilization, unsettled as Trackpad, or get wet pearl etc. of Trackpad can be lost efficacy by touch-control.Therefore, the induction electrode stitching design on the hardware needs further to optimize again, increases the electrode stitching in the scope of touch area, makes the linearity of electric field more steady, to improve Trackpad sensitivity.
Summary of the invention
Technical matters to be solved by this invention provides a kind of capacitive touch control plate that contains comb-shaped electrode, and this capacitive touch control plate that contains comb-shaped electrode can make the linearity of electric field even more, steady, and the sensitivity that effectively improves Trackpad.The technical scheme that adopts is as follows:
A kind of capacitive touch control plate that contains comb-shaped electrode comprises transparency carrier and induction electrode, induction electrode is located on the transparency carrier, induction electrode comprises one group of horizontal electrode stitching and one group electrode stitching longitudinally, transverse electrode stitching and longitudinal electrode stitching intersect mutually, also comprise the extension line that can be connected, it is characterized in that: have at least a part of extension line to be connected with the electrode stitching in the mode of the corresponding many electrode stitchings of an extension line with touch-control chip I port.
Trackpad can adopt a transparency carrier, also can adopt the set-up mode of two transparency carriers.Be provided with under the transparent situation of two substrates, transverse electrode stitching and longitudinal electrode stitching are separately positioned on the medial surface of two transparency carriers, and wherein a substrate can be used as dielectric layer; Under the situation that a transparency carrier only is set, also layer protecting film should be set at the upper surface of induction electrode, the protection induction electrode is avoided damaging and as the effect of dielectric layer.
The material of the transparency carrier of described capacitive touch control plate can be a glass, also can be the polyester material with soft bendability; Electrode is a transparent conductive material, as indium zinc oxide, tin indium oxide etc.
In traditional electrode stitching set-up mode, electrode stitching on the touch area is directly drawn by extension line, and connect touch-control chip I port respectively, because be subjected to the quantitative limitation of touch-control chip I port number, touch area of the same area on Trackpad, the number of the electrode stitching that it can be provided with is at most the quantity of touch-control chip I port, and the electrode stitching can't increase again in this case; And the present invention is set to connect many electrode stitchings by at least a portion extension line, so, the corresponding extension line of touch-control chip I port, extension line can corresponding many electrode stitchings, under the situation that touch-control chip I port number is fixed, can in the touch area, increase the electrode stitching as much as possible, thereby the electrode stitching in the touch area can be multiplied, increase the quantity of electrode exponentially, and keep evenly distributing, make the closeness of the CHARGE DISTRIBUTION of capacitive touch control plate be variation more stably, make the linearity of electric field more steady, and the coupling capacitance on the raising touch area, thereby reach the effect that improves Trackpad degree of accuracy and sensitivity.
To many electrode stitchings of small part extension line connection, can be that all extension lines all connect many electrode stitchings; Also can be that wherein the part extension line connects many electrode stitchings, another part extension line connects single electrode stitching; In concrete the application, can determine the quantity of the electrode stitching that extension line connects according to actual conditions.Under using at some, only need improve Trackpad edge or middle a certain position degree of accuracy and sensitivity, at this moment can be at edge or middle this position, an extension line is connected at least two electrode stitchings, other position that does not need to improve then adopts an extension line to connect an electrode stitching, can reach the purpose of saving cost like this; And for example, effectively relating under the situation of figure, literal input and menu affirmation input in the touch area, figure, literal importation need ask more accurate, sensitive, at this moment can suitably increase the electrode stitching quantity of connection at the extension line of Trackpad corresponding site, and confirm part at menu, the not requirement of degree of accuracy and sensitivity can suitably reduce the electrode stitching quantity of extension line connection this moment or only connect one.
More steady for reaching the electric field linearity, and further improve the purpose of the coupling capacitance on the touch area, as preferred version of the present invention, it is characterized in that: each extension line all connects at least two electrode stitchings.All extension lines all connect at least two electrode stitchings, make capacitive touch control plate effectively increase the electrode stitching equably in the touch area like this, number of electrodes is increased equably, make the closeness of the CHARGE DISTRIBUTION of whole capacitor formula Trackpad be variation more stably, make the linearity of electric field more steady, thereby reach the effect that improves Trackpad degree of accuracy and sensitivity; On the other hand, the raising of equal area touch area top electrode stitching closeness makes that the coupling capacitance between the electrode stitching increases substantially, thereby has improved the sensitivity of touch-control.
For reaching electric field linearity purpose more stably, as the further preferred version of the present invention, it is characterized in that: the electrode stitching quantity that each extension line connects is identical.All extension lines all connect the electrode stitching of equal number, all connect two electrode stitchings as every extension line, or every extension line all connects three electrode stitchings.Make capacitive touch control plate effectively increase the electrode stitching more equably in the touch area like this, number of electrodes is increased more equably, make the closeness of the CHARGE DISTRIBUTION of whole capacitor formula Trackpad be variation more stably, make the linearity of electric field more steady, thereby reach the effect that improves Trackpad degree of accuracy and sensitivity.Certainly, also can be that the quantity of the electrode stitching that connects of extension line is inequality, this can require to determine according to reality, to reduce manufacturing cost.
In order to reach the purpose that improves coupling capacitance, as the present invention's preferred version further, it is characterized in that: the same electrode stitching that extension line connected connects by electrode connecting line.By between the electrode stitching that extension line connected at same electrode connecting line being set, further improving coupling capacitance, thereby make Trackpad sensitivity higher.
In order to reach the purpose of further raising coupling capacitance, as the present invention's preferred version further again, it is characterized in that: described electrode stitching comprises a plurality of prismatic induction electrode pieces, and prismatic induction electrode interblock connects by the electrode block wiring; The same rhombus induction electrode piece that extension line connected connects by electrode connecting line.Be set to a plurality of rhombus induction electrode piece serial connections by the electrode stitching and form, further improve interelectrode coupling capacitance, thereby make Trackpad sensitivity higher.
In order to reach the purpose of further raising coupling capacitance, as the present invention further preferred to such scheme, it is characterized in that: described electrode stitching comprises a plurality of hexagon induction electrode pieces, and hexagon induction electrode interblock connects by the electrode block wiring; The same hexagon induction electrode piece that extension line connected connects by electrode connecting line.Be set to a plurality of hexagon induction electrode piece serial connections by the electrode stitching and form, further improve interelectrode coupling capacitance, thereby make Trackpad sensitivity higher.
The shape that is concatenated into the induction electrode piece of electrode stitching is diversified, except that rhombus, hexagon, can also be that other shapes such as square, rectangle, five distortion, circle, ellipse are formed by electrode block connecting line serial connection, or mix by the electrode block of multiple shape and to be formed by connecting, as adopting the rhombus electrode block in the horizontal, and adopt the hexagonal shaped electrodes piece in the vertical.
This capacitive touch control plate that contains comb-shaped electrode of the present invention, be set to connect many electrode stitchings by at least a portion extension line, so, the corresponding extension line of touch-control chip I port, extension line can corresponding many electrode stitchings, under the situation that touch-control chip I port number is fixed, can in the touch area, increase the electrode stitching as much as possible, thereby the electrode stitching in the touch area can be multiplied, increase the quantity of electrode exponentially, and keep evenly distributing, make the closeness of the CHARGE DISTRIBUTION of capacitive touch control plate be variation more stably, make the linearity of electric field more steady, and improve the coupling capacitance on the touch area, thereby reach the effect that improves Trackpad degree of accuracy and sensitivity.
Description of drawings
Fig. 1 is a kind of electrode stitching cabling synoptic diagram of existing capacitive touch control plate.
Fig. 2 is the structural representation of the preferred embodiment for the present invention.
Fig. 3 is the structural representation of another embodiment of the present invention, electrode block be shaped as hexagon.
Fig. 4 is the structural representation of other a kind of embodiment of the present invention, and electrode stitching in the horizontal comprises a plurality of hexagon induction electrode pieces, and electrode stitching in the vertical comprises a plurality of prismatic induction electrode pieces.
Fig. 5 is the structural representation of other a kind of embodiment of the present invention, and the electrode stitching is linked together by two electrode cablings of directly disclosing rectangle.
Fig. 6 is the structural representation of other a kind of embodiment of the present invention, and the electrode stitching is made of linear electrode cabling, is provided with electrode connecting line between the same linear pattern cabling that extension line connected.
Embodiment
Be described further below in conjunction with accompanying drawing and preferred implementation of the present invention.
As shown in Figure 2; this capacitive touch control plate that contains comb-shaped electrode comprises transparency carrier, induction electrode and diaphragm; induction electrode comprises one group of horizontal electrode stitching 1 and one group electrode stitching 2 longitudinally; transverse electrode stitching 1 and longitudinal electrode stitching 2 are staggered on transparency carrier; also comprise the extension line 3 that can be connected with touch-control chip I port, an end of every extension line 3 all connects two electrode stitchings 1 (or 2).
By at least a portion extension line 3 being set to connect two electrode stitchings 1 (or 2), so, so, the corresponding extension line 3 of touch-control chip I port, extension line 3 corresponding two electrode stitchings 1 (or 2), under the situation that touch-control chip I port number is fixed, the transverse electrode stitching 1 and the longitudinal electrode stitching 2 that double traditional set-up mode can be set in the touch area, thereby transverse electrode stitching 1 and longitudinal electrode stitching 2 in the touch area are doubled, the quantity of electrode also doubles, and keep evenly distributing, make the closeness of the CHARGE DISTRIBUTION of capacitive touch control plate be variation more stably, make the linearity of electric field more steady, and improve the coupling capacitance on the touch area, thereby reach the effect that improves Trackpad degree of accuracy and sensitivity.Form by transverse electrode stitching 1 and longitudinal electrode stitching 2 are set to 4 serial connections of a plurality of rhombus induction electrodes, further improve interelectrode coupling capacitance, thereby make Trackpad sensitivity higher.By being provided with electrode connecting line 6 between the rhombus induction electrode piece 4 on the electrode stitching that is connected at same extension line 3, further improve coupling capacitance, thereby make Trackpad sensitivity higher.
In another embodiment, as shown in Figure 3, transverse electrode stitching 201 and longitudinal electrode stitching 202 comprise a plurality of hexagon induction electrode pieces 203, and 203 of hexagon induction electrode pieces pass through electrode block wiring 204 and connect, and connect extension line 205.Can also be provided with electrode connecting line 206 between the hexagon induction electrode piece 203 on the electrode stitching 201 or 202 that same extension line 205 connected.
In other embodiments, as shown in Figure 4, transverse electrode stitching 301 comprises a plurality of hexagon induction electrode pieces 302, and 302 of hexagon induction electrode pieces pass through electrode block wiring 303 and connect; Longitudinal electrode stitching 304 comprises a plurality of prismatic induction electrode pieces 305, and 305 of prismatic induction electrode pieces pass through electrode block wiring 303 and connect; Can also be provided with electrode connecting line 307 between rhombus induction electrode piece 305 on the electrode stitching that same extension line 306 connected or the hexagon induction electrode piece 302.
In other embodiments, as shown in Figure 5, the electrode stitching is linked together by the electrode cabling 401 of two rectangles, and connects extension line 402.
In other embodiments, as shown in Figure 6, the electrode stitching is made of linear electrode cabling 501, can also be provided with electrode connecting line 503 between the linear pattern electrode cabling 501 that same extension line 502 connected.
The quantity of the electrode stitching that in other embodiments, extension line connected can be inequality.
Claims (6)
1. a capacitive touch control plate that contains comb-shaped electrode comprises transparency carrier and induction electrode, induction electrode is located on the transparency carrier, induction electrode comprises one group of horizontal electrode stitching and one group electrode stitching longitudinally, transverse electrode stitching and longitudinal electrode stitching intersect mutually, also comprise the extension line that can be connected, it is characterized in that: have at least a part of extension line to be connected with the electrode stitching in the mode of the corresponding many electrode stitchings of an extension line with touch-control chip I port.
2. capacitive touch control plate as claimed in claim 1 is characterized in that: each extension line all connects at least two electrode stitchings.
3. capacitive touch control plate as claimed in claim 2 is characterized in that: the electrode stitching quantity that each extension line connects is identical.
4. as claim 1 or 2 or 3 described capacitive touch control plates, it is characterized in that: the same electrode stitching that extension line connected connects by electrode connecting line.
5. capacitive touch control plate as claimed in claim 4 is characterized in that: described electrode stitching comprises a plurality of prismatic induction electrode pieces, and prismatic induction electrode interblock connects by the electrode block wiring; The same rhombus induction electrode piece that extension line connected connects by electrode connecting line.
6. capacitive touch control plate as claimed in claim 4 is characterized in that: described electrode stitching comprises a plurality of hexagon induction electrode pieces, and hexagon induction electrode interblock connects by the electrode block wiring; The same hexagon induction electrode piece that extension line connected connects by electrode connecting line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010168595A CN101853113A (en) | 2010-05-05 | 2010-05-05 | Capacitive touch pad with comb-shaped electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010168595A CN101853113A (en) | 2010-05-05 | 2010-05-05 | Capacitive touch pad with comb-shaped electrode |
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| CN101853113A true CN101853113A (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010168595A Pending CN101853113A (en) | 2010-05-05 | 2010-05-05 | Capacitive touch pad with comb-shaped electrode |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314272A (en) * | 2010-10-26 | 2012-01-11 | 敦泰科技(深圳)有限公司 | Capacitance type touch screen with bi-layer structure |
| CN103037570A (en) * | 2011-10-07 | 2013-04-10 | 丰田纺织株式会社 | Touch switch and vehicle interior lighting device having the touch switch |
| CN104111760A (en) * | 2013-04-22 | 2014-10-22 | 深圳富泰宏精密工业有限公司 | Dual-mode touch input device and touch panel |
| CN105955557A (en) * | 2016-04-21 | 2016-09-21 | 太原理工大学 | Electrode pattern design structure suitable for large-size mutual capacitive touch screen |
| CN108020945A (en) * | 2016-10-31 | 2018-05-11 | 乐金显示有限公司 | Touch display panel and its short-circuit restorative procedure |
| CN110308809A (en) * | 2018-03-20 | 2019-10-08 | 深圳市鸿合创新信息技术有限责任公司 | A kind of capacitor blank touch-control membrane structure and touching signals processing method |
| US10488991B2 (en) | 2012-05-16 | 2019-11-26 | Tpk Touch Solutions (Xiamen) Inc. | Touch panel comprising a sensing electrode layer and touch sensing display using the same |
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| CN101576667A (en) * | 2008-05-09 | 2009-11-11 | 奇信电子股份有限公司 | Touch-control signal transmission circuit and display using same |
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| JPS58166437A (en) * | 1982-03-26 | 1983-10-01 | Fujitsu Ltd | Manufacture of finger touch type coordinate detection panel |
| CN1661624A (en) * | 2004-02-26 | 2005-08-31 | 义隆电子股份有限公司 | Capacitance type touch pad for simplifying scanning lines and detection method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314272A (en) * | 2010-10-26 | 2012-01-11 | 敦泰科技(深圳)有限公司 | Capacitance type touch screen with bi-layer structure |
| CN103037570A (en) * | 2011-10-07 | 2013-04-10 | 丰田纺织株式会社 | Touch switch and vehicle interior lighting device having the touch switch |
| CN103037570B (en) * | 2011-10-07 | 2015-10-07 | 丰田纺织株式会社 | Soft-touch control and possess the compartment lighting device of this soft-touch control |
| US10488991B2 (en) | 2012-05-16 | 2019-11-26 | Tpk Touch Solutions (Xiamen) Inc. | Touch panel comprising a sensing electrode layer and touch sensing display using the same |
| CN104111760A (en) * | 2013-04-22 | 2014-10-22 | 深圳富泰宏精密工业有限公司 | Dual-mode touch input device and touch panel |
| CN104111760B (en) * | 2013-04-22 | 2017-03-22 | 深圳富泰宏精密工业有限公司 | Dual-mode touch input device and touch panel |
| CN105955557A (en) * | 2016-04-21 | 2016-09-21 | 太原理工大学 | Electrode pattern design structure suitable for large-size mutual capacitive touch screen |
| CN105955557B (en) * | 2016-04-21 | 2019-04-12 | 太原理工大学 | A kind of cell, electrode pattern design structure of suitable large-size mutual capacitance touch screen |
| CN108020945A (en) * | 2016-10-31 | 2018-05-11 | 乐金显示有限公司 | Touch display panel and its short-circuit restorative procedure |
| CN108020945B (en) * | 2016-10-31 | 2021-03-16 | 乐金显示有限公司 | Touch display panel and short circuit repairing method thereof |
| US11093061B2 (en) | 2016-10-31 | 2021-08-17 | Lg Display Co., Ltd | Touch-type display panel and short-repair method thereof |
| CN110308809A (en) * | 2018-03-20 | 2019-10-08 | 深圳市鸿合创新信息技术有限责任公司 | A kind of capacitor blank touch-control membrane structure and touching signals processing method |
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Application publication date: 20101006 |