CN201993729U - Equivalent potential adjustment structure for touch panel - Google Patents
Equivalent potential adjustment structure for touch panel Download PDFInfo
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- CN201993729U CN201993729U CN2011200169187U CN201120016918U CN201993729U CN 201993729 U CN201993729 U CN 201993729U CN 2011200169187 U CN2011200169187 U CN 2011200169187U CN 201120016918 U CN201120016918 U CN 201120016918U CN 201993729 U CN201993729 U CN 201993729U
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- transparency electrode
- impedance
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- metal wire
- contact panel
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Abstract
An equivalent potential adjustment structure for a touch panel comprises a rectangular and transparent base plate, a transparent electrode, a plurality of conductors, a plurality of metal wire sections and a plurality of gaps, wherein the transparent electrode is formed on the surface of the base plate; in addition, the transparent electrode is provided with four edges; the conductors have impedance and are respectively formed on the four edges of the transparent electrode; the metal wire sections are respectively formed on the edges of the transparent electrode, positioned on the inner sides of the conductors and parallel to the conductors; the gaps are respectively formed on the edges of the transparent electrode; and each gap is positioned between each conductor and each metal wire section on the relative position; an impedance compensation part is formed between adjacent gaps; and each impedance compensation part is electrically connected with each conductor and each metal wire section on the corresponding positions. The distance or width between adjacent gaps is utilized to lead the conductors at different positions to be respectively connected with compensation resistors with different impedance, thereby forming an electric field on the transparent electrode; and the structure can effectively reduce occupied area of an impedance compensation measure on the touch panel.
Description
Technical field
The utility model relates to a kind of equivalent potential of contact panel and adjusts structure, relates in particular to a kind of correlation technique of effectively dwindling the shared area of impedance-compensated measure on the contact panel.
Background technology
The higher contact panel of occupation rate is in the market distinguished in respect of two kinds of resistance-type and condenser types with principle of work; Wherein, electric resistance touch-control panel bag four-wire type and five-line, six lines or eight line formulas; Condenser type then is divided into surface capacitance type (SCT) and projected capacitive (PCT).In addition, distinguish with the form of sensing signal, projected capacitive touch panel is regarded as a kind of digital touch technology, and resistance-type and surface capacitance type contact panel then are called a kind of analog touch technology.
With analog contact panel is example, all must form transparency electrode at a substrate surface, and on four limits of transparency electrode, resistance element is set respectively, and on transparency electrode, surround an active region (active region), when after applying voltage on the described resistance element, will in active region, produce an equivalent current potential; But the impedance of described resistance element is directly proportional with the distance of itself and substrate edges, more little apart from the substrate edges distance, impedance is more little, the then impedance maximum of middle position of resistance element, because described resistance difference, thereby can't in active region, form uniform equivalent potential, thereby influence the correctness that coordinate is judged.
For solving foregoing problems, change the resistance element pattern and add solution such as impedance-compensated measure and arise at the historic moment, as I246025 number " electric resistance touch-control panel of tool voltage compensation " patent application case of TaiWan, China patent for invention, as shown in Figure 4, it comprises:
One rectangular base 510;
First-class resistive surface (uniform resistive surface) 520, it on average is coated on the described rectangular base 510;
A plurality of resistance elements 530, it is respectively formed at the edge on described constant resistance surface 520;
A plurality of compensating element,s 540, its compartment of terrain are respectively formed at the edge on described constant resistance surface 520 and are positioned at the inboard of each resistance element 530; Wherein,
The size of described a plurality of compensating element, 540 is directly proportional with the Edge Distance on constant resistance surface 520, and the Edge Distance on the interval of 540 of compensating element,s and constant resistance surface 520 is inversely proportional to; The size of just described compensating element, 540 is less shapes on the both sides on constant resistance surface 520, in the centre on constant resistance surface 520 then is bigger shape, and the interval that adjacent compensating element, is 540 then is to be spacings of broad in the position, both sides on constant resistance surface 520, is narrower spacings in the centre position on constant resistance surface 520;
Thus, when voltage is applied to each resistance element 530, can on constant resistance surface 520, produce a rectangle electric field (electrical field); And this impedance-compensated measure of utilization can make described rectangle electric field have uniform equivalent potential distribution.
Although can making the rectangle electric field of contact panel have uniform equivalent potential, described impedance-compensated measure distributes, but potential problems are still paid close attention to constantly, the area that just described impedance-compensated measure takies on constant resistance surface (transparency electrode), described impedance-compensated measure the active region size of touching panel will directly be influenced: owing to must form the resistance element of special pattern on transparency electrode, and the position that further is close to active region in the resistance element inboard makes compensating element,, therefore take the of such a size area on each limit of transparency electrode, and directly influenced the size of active region; When the contact panel size was big, area occupied was more less than relatively, influenced lessly relatively, if the size of contact panel hour, then the area occupied ratio must improve, and was very significant for the influence of contact panel active region size.
From the above, contact panel has uniform equivalent potential and distributes for making in the active region, must take impedance-compensated structure, but the problem of impedance-compensated structure influence active region size still must face, and should actively seek feasible solution.
The utility model content
Therefore the utility model fundamental purpose is adjusted structure in the equivalent potential that a kind of contact panel is being provided, and it can make has uniform equivalent potential in the active region of contact panel and distribute, and can significantly dwindle area occupied, solves the affected problem of active region area.
For the major technique means of reaching aforementioned purpose employing are to make the equivalent potential adjustment structure of described contact panel include:
One substrate, rectangular and transparence;
One transparency electrode be formed on the surface of described substrate, and described transparency electrode has four edges;
A plurality of leads have impedance, and are respectively formed on four edges of described transparency electrode;
A plurality of metal wire sections are respectively formed on each limit of described transparency electrode, and it is positioned at the inboard and parallel with lead of described lead;
A plurality of gaps are respectively formed on each limit of described transparency electrode and between the metal wire sections on each lead and the relative position; Form an impedance-compensated portion between each adjacent segment respectively, this impedance-compensated respectively with correspondence position on lead and metal wire sections constitute to electrically connect.
Wherein, adjacent spacing is big more near more gap, transparency electrode edge, and adjacent spacing is more little from gap far away more, transparency electrode edge.
Wherein, the gap width near more from the transparency electrode edge is more little, and the gap width far away more from the transparency electrode edge is big more.
Wherein, the lead two ends on four edges of this transparency electrode interconnect, and are formed with an end resistance element in the junction; And described substrate surface is formed with a signal wire respectively at the two side ends and the lower end of adjacent transparent electrode, and an end of each signal wire is connected with described end resistance element respectively, and the other end then is connected with the contact that is formed on the substrate surface lower end.
The spacing or the width of described each adjacent segment adjusted in the utility model utilization, can constitute the impedance-compensated portion of different resistances respectively, thereby be equal to the compensating resistance that makes each lead on diverse location, connect different impedances respectively, use surround on described transparency electrode by each metal wire sections the zone in form an equivalent current potential; Because the resistance element that the live width of described tool impedance lead constitutes with the specific pattern electrode on traditional contact panel, cooperating utilizes adjacent segment to constitute the mode of impedance-compensated portion again, can effectively dwindle the area that impedance-compensated measure takies on contact panel, and especially be useful on the undersized contact panel.
The another purpose of the utility model is providing a kind of contact panel of disturbing of preventing, for reaching the major technique means that aforementioned purpose takes is to make described substrate surface have a wiring region, and this wiring region contains the lead on the transparency electrode, impedance-compensated and metal wire sections; And be covered with in regular turn on the wiring region:
Once separation layer is formed on the wiring region, and covering the lead on it, impedance-compensated and metal wire sections, and insulation ground isolates lead, impedance-compensated and metal wire sections in the wiring region;
One anti-interference layer, it possesses electric conductivity, is covered on the described separation layer down;
Utilization covers the technology of separation layer, anti-interference layer down on described wiring region, can effectively isolate set lead on the wiring region, impedance-compensated and metal wire sections, and then reach the purpose of interference prevention.
Wherein, this wiring region further contains transparency electrode substrate surface in addition.
Wherein, further be formed with separation layer on this anti-tampering layer.
Wherein, the live width of this lead and metal wire sections is 25um.
Description of drawings
Fig. 1 is the planimetric map of the utility model first preferred embodiment.
Fig. 2 is the local amplification view of the utility model first preferred embodiment.
Fig. 3 is the cut-open view of the utility model second preferred embodiment.
Fig. 4 is the planimetric map of electric resistance touch-control panel of the tool voltage compensation of TaiWan, China patent for invention I246025 number.
Embodiment
Below cooperate preferred embodiment graphic and of the present utility model, further setting forth the utility model is to reach the technological means that predetermined utility model purpose is taked.
Relate to first preferred embodiment of the present utility model, please refer to shown in Figure 1, mainly be to be formed with a transparency electrode (ITO for example on a rectangle and transparent substrate 10 surfaces, Indium TinOxide) 100, be formed with a lead 11 respectively on four of transparency electrode 100 edges again, each lead 11 two ends interconnects, and (transparency electrode 100 corners) are formed with an end resistance element 101 in the junction, and this end resistance element 101 is that a part of institute by transparency electrode 100 is constituted; In addition, substrate 10 surfaces are formed with a signal wire 102 respectively at the two side ends and the lower end of adjacent transparent electrode 100, and an end of each signal wire 102 is connected with described end resistance element 101 respectively, and the other end then is connected with the contact 103 that is formed at substrate 10 surperficial lower ends;
Please cooperate again with reference to shown in Figure 2, this transparency electrode 100 is formed with a plurality of metal wire sections 14 respectively in contiguous four edges, and each metal wire sections 14 is parallel with the lead 11 on the relative position, and each metal wire sections 14 is independent separately not to be connected; Moreover, form a plurality of gaps 12 respectively between the inboard of each lead 11 of this transparency electrode 100 and the relative metal wire sections 14, described gap 12 can utilize etching mode to be formed on the transparency electrode 100, because each limit of transparency electrode 100 forms a plurality of gaps 12 respectively between lead 11 and metal wire sections 14,100 of not removed transparency electrodes form one impedance-compensated 13 respectively between the adjacent segment 12, each impedance-compensated 13 respectively with correspondence position on lead 11 and metal wire sections 14 electrically connect, then relevant as for impedance-compensated 13 resistance value with its area size, the big more resistance of area is high more, in other words, the utility model can be by changing the spacing in each gap 12, formed impedance-compensated 13 area therebetween to adjust, and then adjusted its resistance value.
In the aforementioned embodiment, the utility model is by the distance of adjusting each adjacent segment 12 or length, is formed impedance-compensated 13 resistance value therebetween to adjust; Except that previous embodiment, the further width of adjusting play 12 itself, just more little near more gap 12 width of transparency electrode frontside edge, gap 12 width far away more from the transparency electrode frontside edge are big more, thereby make between the adjacent segment 12 impedance-compensated 13 of forming have different resistance values.
In addition, in the present embodiment, described lead 11 and metal wire sections 14 are to be formed on the transparency electrode 100 by screen painting or other technologies with the silver slurry, in the present embodiment, the width of this lead 11 and metal wire sections 14 is 25um, it utilizes thinner live width, makes on the lead 11 and forms line impedence, is beneficial to thus on transparency electrode 100 and forms electric field; And superfine live width is except above-mentioned effect, also dwindle area occupied relatively, mainly be to compare more than the 300um easily because of the live width of this lead 11, metal wire sections 14 and the width of electrode that traditional contact panel forms, there is great gap, so the area that takies is less relatively on transparency electrode 100.Moreover 14 of metal wire sections that are positioned at transparency electrode 100 each edges are to constitute an active region 104.
Moreover, contact panel of the present utility model is to be respectively equipped with end resistance element 101 in four corners of transparency electrode 100, described end resistance element 101 also is connected with lead 11 on transparency electrode 100 each edge respectively, identical with traditional contact panel, be separated by with it distance of transparency electrode frontside edge of impedance on the lead 11 is proportional, its two ends are nearer from the transparency electrode frontside edge, impedance is lower, its central authorities are far away from the transparency electrode frontside edge, therefore impedance is higher, because described impedance contrast, cause the electric field Potential distribution of active region inhomogeneous, therefore need take impedance-compensated measure, and the utility model utilizes a plurality of gaps 12 to form impedance-compensated 13 mode so that described impedance-compensated measure to be provided, the impedance contrast that is caused for the relative transparency electrode frontside edges distance of compensating wire 11, thereby order is big more from the near more gap 12 adjacent spacings of transparency electrode frontside edge, impedance-compensated 13 resistance value that two adjacent gaps 12 are constituted is big more, the gap 12 adjacent spacings far away more from the transparency electrode frontside edge are more little, then impedance-compensated 13 resistance value being constituted of two adjacent gaps 12 is more little, reach thus impedance-compensated, thereby make the active region 104 on the transparency electrode 100 constitute a uniform equivalent potential.Except utilizing the resistance of impedance-compensated 13 compensating wire 11 line,, also can do impedance adjustment a little by changing the end resistance element 101 area sizes that connect lead 11.
Please refer to shown in Figure 3 again, it is the partial sectional view of the another preferred embodiment of the utility model, it discloses the utility model and further has an anti-interference method, mainly be to make having a wiring region 105 on the described substrate 10, this wiring region 105 is to contain the lead 11 on transparency electrode 100 each limit, impedance-compensated 13 and metal wire sections 14, and can further contain substrate 10 surfaces beyond the transparency electrode 100.The utility model is for reaching anti-tampering purpose again, and is covered with in regular turn on the wiring region 105:
Once separation layer 106, be formed on the wiring region 105, and covering the lead 11 on it, impedance-compensated 13 and metal wire sections 14, even the end resistance element 101 on substrate 10 surfaces and signal wire 102;
One anti-interference layer 107 possesses electric conductivity, is to be covered on the described separation layer 106 down;
Utilization covers the technology of separation layer 106, anti-interference layer 107 down on described wiring region 105, can effectively isolate set lead 11 on the wiring region 105, impedance-compensated 13 and metal wire sections 14, and then reach the purpose of interference prevention.Can further cover separation layer 108 on the described in addition anti-interference layer 107, isolate so that this anti-interference layer 107 is constituted insulation; And described upper and lower separation layer 108,106th is made of dielectric ink.
Utilize described structure except can producing impedance-compensated effect,,, be particularly useful on the undersized contact panel so do not influence the effective active area of active region because it is little to take the area of transparency electrode.The utility model further constitutes anti-interference method on the wiring region of substrate in addition, can effectively prevent to disturb, and guarantee that the interpretation signal is accurate.
The above only is a preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction; though the utility model discloses as above with preferred embodiment; yet be not in order to limit the utility model; any those skilled in the art are in the scope that does not break away from technical solutions of the utility model; when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations; in every case be the content that does not break away from technical solutions of the utility model; according to technical spirit of the present utility model to any simple modification that above embodiment did; equivalent variations and modification all still belong in the protection domain of claims of the utility model skill.
Claims (10)
1. the equivalent potential of a contact panel is adjusted structure, it is characterized in that comprising:
One substrate, rectangular and transparence;
One transparency electrode be formed on the surface of described substrate, and described transparency electrode has four edges;
A plurality of leads have impedance, and are respectively formed on four edges of described transparency electrode;
A plurality of metal wire sections form respectively on each limit of described transparency electrode, and it is positioned at the inboard and parallel with lead of described lead;
A plurality of gaps are respectively formed on each limit of described transparency electrode and between the metal wire sections on each lead and the relative position; Form an impedance-compensated portion between each adjacent segment respectively, this impedance-compensated respectively with correspondence position on lead and metal wire sections constitute to electrically connect.
2. the equivalent potential of contact panel according to claim 1 is adjusted structure, and it is characterized in that: adjacent spacing is big more near more gap, transparency electrode edge, and adjacent spacing is more little from gap far away more, transparency electrode edge.
3. the equivalent potential of contact panel according to claim 1 is adjusted structure, and it is characterized in that: the gap width near more from the transparency electrode edge is more little, and the gap width far away more from the transparency electrode edge is big more.
4. the equivalent potential of contact panel according to claim 2 is adjusted structure, and it is characterized in that: the gap width near more from the transparency electrode edge is more little, and the gap width far away more from the transparency electrode edge is big more.
5. the equivalent potential of contact panel according to claim 3 is adjusted structure, and it is characterized in that: the lead two ends on four edges of this transparency electrode interconnect, and are formed with an end resistance element in the junction; And described substrate surface is formed with a signal wire respectively at the two side ends and the lower end of adjacent transparent electrode, and an end of each signal wire is connected with described end resistance element respectively, and the other end then is connected with the contact that is formed on the substrate surface lower end.
6. the equivalent potential of contact panel according to claim 4 is adjusted structure, and it is characterized in that: the lead two ends on four edges of this transparency electrode interconnect, and are formed with an end resistance element in the junction; And described substrate surface is formed with a signal wire respectively at the two side ends and the lower end of adjacent transparent electrode, and an end of each signal wire is connected with described end resistance element respectively, and the other end then is connected with the contact that is formed on the substrate surface lower end.
7. adjust structure according to the equivalent potential of each described contact panel in the claim 1 to 6, it is characterized in that: this substrate surface has a wiring region, and this wiring region contains the lead on the transparency electrode, impedance-compensated and metal wire sections; And be covered with in regular turn on the described wiring region:
Separation layer once, it is formed on the wiring region, and covering the lead on it, impedance-compensated and metal wire sections, and insulation ground isolates lead, impedance-compensated and metal wire sections in the wiring region;
One anti-interference layer, it possesses electric conductivity, is covered on the described separation layer down.
8. the equivalent potential of contact panel according to claim 7 is adjusted structure, it is characterized in that: this wiring region further contains the substrate surface beyond the transparency electrode.
9. the equivalent potential of contact panel according to claim 8 is adjusted structure, it is characterized in that: further be formed with separation layer on this anti-tampering layer.
10. adjust structure according to the equivalent potential of each described contact panel in the claim 1 to 6, it is characterized in that: the live width of this lead and metal wire sections is 25um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200169187U CN201993729U (en) | 2011-01-14 | 2011-01-14 | Equivalent potential adjustment structure for touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200169187U CN201993729U (en) | 2011-01-14 | 2011-01-14 | Equivalent potential adjustment structure for touch panel |
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| Publication Number | Publication Date |
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| CN201993729U true CN201993729U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200169187U Expired - Fee Related CN201993729U (en) | 2011-01-14 | 2011-01-14 | Equivalent potential adjustment structure for touch panel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016082244A1 (en) * | 2014-11-26 | 2016-06-02 | 深圳市华星光电技术有限公司 | Touch panel and touch display device |
| CN107718917A (en) * | 2017-10-30 | 2018-02-23 | 无锡变格新材料科技有限公司 | The touch screen silver wire technology that a kind of silk-screen printing and laser printing are combined |
-
2011
- 2011-01-14 CN CN2011200169187U patent/CN201993729U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016082244A1 (en) * | 2014-11-26 | 2016-06-02 | 深圳市华星光电技术有限公司 | Touch panel and touch display device |
| CN107718917A (en) * | 2017-10-30 | 2018-02-23 | 无锡变格新材料科技有限公司 | The touch screen silver wire technology that a kind of silk-screen printing and laser printing are combined |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20180114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |