CN104216550A - Electrode structure capable of reducing series impedance and stray capacitance of touch screen - Google Patents
Electrode structure capable of reducing series impedance and stray capacitance of touch screen Download PDFInfo
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- CN104216550A CN104216550A CN201310220157.0A CN201310220157A CN104216550A CN 104216550 A CN104216550 A CN 104216550A CN 201310220157 A CN201310220157 A CN 201310220157A CN 104216550 A CN104216550 A CN 104216550A
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Abstract
The invention provides an electrode structure capable of reducing series impedance and stray capacitance of a touch screen. The electrode structure comprises a plurality of first-axis electrode units and a plurality of second-axis electrode units, wherein each second-axis electrode unit comprises a first electrode sub-unit and a second electrode sub-unit, the first electrode sub-unit is a rectangle and comprises a first electrode sub-unit hollow-out portion, the second electrode sub-unit is a rectangle and comprises a second electrode sub-unit hollow-out portion, and a gap is reserved between the short side of the first electrode sub-unit and the short side of the second electrode sub-unit. Series impedance and stray capacitance of the electrode structure of the touch screen are reduced, and touch efficiency of the touch screen is increased.
Description
Technical field
The present invention has the electrode structure about a kind of Touch Screen, particularly a kind of electrode structure with the Touch Screen reducing series impedance and stray capacitance.
Background technology
The electrode of general Touch Screen contains transmission shaft (Y-axis) electrode and receiving axes (X-axis) electrode.Transmission shaft electrode is electrically connected to driving circuit, and receiving axes electrode is electrically connected to sensing circuit, is connected to microprocessor more afterwards, calculates the pressing position of user's finger on Touch Screen to sense.
Resistance value is directly proportional to length, and the longer then resistance value of length is larger; Capacitance is directly proportional to area, and the larger then capacitance of area is larger, and when width is identical, length is longer, and namely area is larger.Above-mentioned receiving axes electrode usually because length is long, therefore series impedance and stray capacitance too high, touching signals will be caused to weaken, have impact on the touch-control usefulness of Touch Screen.Especially, when the size of Touch Screen is increasing time, series impedance and the too high situation of stray capacitance will be more and more serious.
Summary of the invention
The object of the present invention is to provide a kind of electrode structure with the Touch Screen reducing series impedance and stray capacitance.
For achieving the above object, the invention provides a kind of electrode structure with the Touch Screen reducing series impedance and stray capacitance, comprising:
A plurality of first axial electrode unit; And
A plurality of second axial electrode unit, those the second axial electrode unit are arranged relative to those the first axial electrode unit,
Wherein this second axial electrode unit comprises:
One first electrode subelement, this first electrode subelement is arranged relative to this first axial electrode unit; And
One second electrode subelement, this second electrode subelement is arranged relative to this first axial electrode unit and this first electrode subelement,
Wherein this first electrode subelement comprises:
One first electrode subelement hollow-out parts;
The one first long limit of electrode subelement first;
The one first long limit of electrode subelement second;
One first electrode subelement first minor face, the two ends of this first electrode subelement first minor face are connected to the one end on this long limit of the first electrode subelement first and the one end on this long limit of the first electrode subelement second respectively; And
One first electrode subelement second minor face, the two ends of this first electrode subelement second minor face are connected to the other end on this long limit of the first electrode subelement first and the other end on this long limit of the first electrode subelement second respectively, this long limit of the first electrode subelement first, this long limit of the first electrode subelement second, this first electrode subelement first minor face and this first electrode subelement second minor face surround into this first electrode subelement hollow-out parts
Wherein this second electrode subelement comprises:
One second electrode subelement hollow-out parts;
The one second long limit of electrode subelement first;
The one second long limit of electrode subelement second;
One second electrode subelement first minor face, the two ends of this second electrode subelement first minor face are connected to the one end on this long limit of the second electrode subelement first and the one end on this long limit of the second electrode subelement second respectively; And
One second electrode subelement second minor face, the two ends of this second electrode subelement second minor face are connected to the other end on this long limit of the second electrode subelement first and the other end on this long limit of the second electrode subelement second respectively, this long limit of the second electrode subelement first, this long limit of the second electrode subelement second, this second electrode subelement first minor face and this second electrode subelement second minor face surround into this second electrode subelement hollow-out parts, wherein have a gap between this first electrode subelement second minor face and this second electrode subelement first minor face.
Further, wherein this first electrode subelement also comprises a plurality of first electrode subelement compensating electrode, and those the first electrode subelement compensating electrodes connect this long limit of the first electrode subelement first or this long limit of the first electrode subelement second.
Further, wherein this second electrode subelement also comprises a plurality of second electrode subelement compensating electrode, and those the second electrode subelement compensating electrodes connect this long limit of the second electrode subelement first or this long limit of the second electrode subelement second.
Further, wherein this first electrode subelement compensating electrode is square or L-type; This second electrode subelement compensating electrode is square or L-type.
Further, wherein this first axial electrode unit is a rectangle.
Further, wherein the length on this long limit of the first electrode subelement first equals the length on this long limit of the first electrode subelement second; The length on this long limit of the second electrode subelement first equals the length on this long limit of the second electrode subelement second.
Further, wherein the length of this first electrode subelement first minor face equals the length of this first electrode subelement second minor face; The length of this second electrode subelement first minor face equals the length of this second electrode subelement second minor face.
Further, wherein this first electrode subelement is a rectangle; This second electrode subelement is a rectangle.
Further, wherein this first electrode subelement hollow-out parts is a rectangle; This second electrode subelement hollow-out parts is a rectangle.
Further, the width in this gap wherein between this first electrode subelement second minor face and this second electrode subelement first minor face equals the width between those the first axial electrode unit.
Effect of the present invention, reduces series impedance and the stray capacitance of the electrode structure of Touch Screen, and improves the touch-control usefulness of Touch Screen.
Accompanying drawing explanation
Fig. 1 is a plurality of first axial electrode cell schematics of the present invention.
Fig. 2 is the first embodiment schematic diagram of a plurality of second axial electrode unit of the present invention.
Fig. 3 is the first embodiment schematic diagram that the present invention has the electrode structure of the Touch Screen reducing series impedance and stray capacitance.
Fig. 4 is the second embodiment schematic diagram of a plurality of second axial electrode unit of the present invention.
Fig. 5 is the second embodiment schematic diagram that the present invention has the electrode structure of the Touch Screen reducing series impedance and stray capacitance.
Fig. 6 is the 3rd embodiment schematic diagram of a plurality of second axial electrode unit of the present invention.
Fig. 7 is the 3rd embodiment schematic diagram that the present invention has the electrode structure of the Touch Screen reducing series impedance and stray capacitance.
Description of reference numerals
First axial electrode unit 10
Second axial electrode unit 20
First electrode subelement 202
Second electrode subelement 204
First electrode subelement hollow-out parts 206
The first long limit 208 of electrode subelement first
The first long limit 210 of electrode subelement second
First electrode subelement first minor face 212
First electrode subelement second minor face 214
Second electrode subelement hollow-out parts 216
The second long limit 218 of electrode subelement first
The second long limit 220 of electrode subelement second
Second electrode subelement first minor face 222
Second electrode subelement second minor face 224
Gap 226
First electrode subelement compensating electrode 228
Second electrode subelement compensating electrode 230.
Embodiment
Please refer to Fig. 1, it is a plurality of first axial electrode cell schematics of the present invention; And please also refer to Fig. 2, it is the first embodiment schematic diagram of a plurality of second axial electrode unit of the present invention; And please also refer to Fig. 3, it has the first embodiment schematic diagram of the electrode structure of the Touch Screen reducing series impedance and stray capacitance for the present invention.Namely Fig. 3 is become after being added by Fig. 1 and Fig. 2.
The electrode structure with the Touch Screen reducing series impedance and stray capacitance of the present invention comprises a plurality of first axial electrode unit 10 and a plurality of second axial electrode unit 20.Those the second axial electrode unit 20 are arranged relative to those the first axial electrode unit 10.
This second axial electrode unit 20 comprises one first electrode subelement 202 and one second electrode subelement 204.This first electrode subelement 202 is arranged relative to this first axial electrode unit 10; This second electrode subelement 204 is arranged relative to this first axial electrode unit 10 and this first electrode subelement 202.
This first electrode subelement 202 comprises one first electrode subelement second long limit 210,1 first, electrode subelement hollow-out parts 206, the 1 first long limit of electrode subelement first 208,1 first electrode subelement first minor face 212 and one first electrode subelement second minor face 214.
The two ends of this first electrode subelement first minor face 212 are connected to the one end on this long limit 208 of the first electrode subelement first and the one end on this long limit 210 of the first electrode subelement second respectively; The two ends of this first electrode subelement second minor face 214 are connected to the other end on this long limit 208 of the first electrode subelement first and the other end on this long limit 210 of the first electrode subelement second respectively; This long limit 208 of the first electrode subelement first, this long limit 210 of the first electrode subelement second, this first electrode subelement first minor face 212 and this first electrode subelement second minor face 214 are around to form this first electrode subelement hollow-out parts 206.
This second electrode subelement 204 comprises one second electrode subelement second long limit 220,1 second, electrode subelement hollow-out parts 216, the 1 second long limit of electrode subelement first 218,1 second electrode subelement first minor face 222 and one second electrode subelement second minor face 224.
The two ends of this second electrode subelement first minor face 222 are connected to the one end on this long limit 218 of the second electrode subelement first and the one end on this long limit 220 of the second electrode subelement second respectively; The two ends of this second electrode subelement second minor face 224 are connected to the other end on this long limit 218 of the second electrode subelement first and the other end on this long limit 220 of the second electrode subelement second respectively; This long limit 218 of the second electrode subelement first, this long limit 220 of the second electrode subelement second, this second electrode subelement first minor face 222 and this second electrode subelement second minor face 224 are around to form this second electrode subelement hollow-out parts 216.
Between this first electrode subelement second minor face 214 and this second electrode subelement first minor face 222, there is a gap 226; The width in this gap 226 can be but not be defined as the width equaled between those the first axial electrode unit 10.
The length on this long limit 208 of the first electrode subelement first can be but not limit the length equaling this long limit 210 of the first electrode subelement second; The length on this long limit 218 of the second electrode subelement first can be but not limit the length equaling this long limit 220 of the second electrode subelement second; The length of this first electrode subelement first minor face 212 can be but not limit the length 214 equaling this first electrode subelement second minor face; The length of this second electrode subelement first minor face 222 can be but not limit the length equaling this second electrode subelement second minor face 224.
This first axial electrode unit 10 can be but not be defined as a rectangle; This first electrode subelement 202 can be but not be defined as a rectangle; This second electrode subelement 204 can be but not be defined as a rectangle; This first electrode subelement hollow-out parts 206 can be but not be defined as a rectangle; This second electrode subelement hollow-out parts 216 can be but not be defined as a rectangle.
The electrode structure with the Touch Screen reducing series impedance and stray capacitance of the present invention as shown in Figure 3 need be electrically connected to suitable driving circuit, sensing circuit and microprocessor etc. electronic circuit again, calculates the pressing position of user's finger on Touch Screen to sense; Because this part belongs to prior art, therefore repeat no more in this.Touch Screen of the present invention refers to capacitance touch control screen.
The quantity of those the first axial electrode unit 10 shown in Fig. 1,2 and 3 and those the second axial electrode unit 20 is only citing, the present invention is not as limit, and this first axial electrode unit 10 can be but is not defined as transmission shaft (Y-axis) electrode, this second axial electrode unit 20 can be but not be defined as receiving axes (X-axis) electrode.
If this first axial electrode unit 10 is transmission shaft electrode, this the second axial electrode unit 20 is receiving axes electrode, then those the first axial electrode unit 10 are electrically connected to driving circuit, those the first electrode subelements 202 are electrically connected to sensing circuit, and those the second electrode subelements 204 are also electrically connected to sensing circuit, calculate the pressing position of user's finger on Touch Screen to sense.
As described in prior art, general receiving axes electrode usually because length is long, therefore series impedance and stray capacitance too high, touching signals will be caused to weaken, have impact on the touch-control usefulness of Touch Screen.But by the electrode structure shown in Fig. 3 of the present invention, because length has reduced by half (be divided into this first electrode subelement 202 and this second electrode subelement 204, and be electrically connected to sensing circuit separately), so series impedance and stray capacitance can be reduced, to improve the touch-control usefulness of Touch Screen.In a specific embodiment, compared to prior art, can reduce series impedance and only be left 1/4th of script, stray capacitance is then only left originally 1/2nd.
Please answer reference diagram 1; And please also refer to Fig. 4, it is the second embodiment schematic diagram of a plurality of second axial electrode unit of the present invention; And please also refer to Fig. 5, it is the second embodiment schematic diagram with the electrode structure of the Touch Screen reducing series impedance and stray capacitance of the present invention; Namely Fig. 5 is become after being added by Fig. 1 and Fig. 4.And please also refer to Fig. 6, it is the 3rd embodiment schematic diagram of a plurality of second axial electrode unit of the present invention; And please also refer to Fig. 7, it is the 3rd embodiment schematic diagram with the electrode structure of the Touch Screen reducing series impedance and stray capacitance of the present invention; Namely Fig. 7 is become after being added by Fig. 1 and Fig. 6.
Fig. 4,5,6 and 7 and Fig. 2 and 3 similar, therefore be in this mutually together and repeat no more; Fig. 4,5,6 and 7 different from Fig. 2 and 3 be in: this first electrode subelement 202 more comprises a plurality of first electrode subelement compensating electrode 228, and those the first electrode subelement compensating electrodes 228 connect this long limit 208 of the first electrode subelement first or this long limit 210 of the first electrode subelement second; This second electrode subelement 204 also comprises a plurality of second electrode subelement compensating electrode 230, and those the second electrode subelement compensating electrodes 230 connect this long limit 218 of the second electrode subelement first or this long limit 220 of the second electrode subelement second; This first electrode subelement compensating electrode 228 can be but not be defined as square (as shown in Figures 4 and 5) or L-type (as shown in Figures 6 and 7); This second electrode subelement compensating electrode 230 can be but not be defined as square (as shown in Figure 4,5) or L-type (as shown in Figures 6 and 7).
The effectiveness of this first electrode subelement compensating electrode 228 and this second electrode subelement compensating electrode 230 is described below: when generally making the electrode of Touch Screen, virtual (dummy) block can be placed in space between electrode and electrode, its function has two, first is the stray capacitance that can balance each electrode, and second is the use as compensate for optical parallax; But, when making these virtual blocks, when especially quantity is more, the degree of difficulty of etching electrode can be increased.Therefore the present invention utilizes those the first electrode subelement compensating electrodes 228 above-mentioned and those the second electrode subelement compensating electrodes 230 to replace general virtual block, to reach the effect reducing etching electrode degree of difficulty.Moreover, space between those the first electrode subelements 202 and those the first electrode subelement compensating electrodes 228, and the space between those the second electrode subelements 204 and those the second electrode subelement compensating electrodes 230, can place a small amount of virtual block, the present invention is not as limit.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (10)
1. there is an electrode structure for the Touch Screen reducing series impedance and stray capacitance, it is characterized in that, comprise:
A plurality of first axial electrode unit; And
A plurality of second axial electrode unit, those the second axial electrode unit are arranged relative to those the first axial electrode unit,
Wherein this second axial electrode unit comprises:
One first electrode subelement, this first electrode subelement is arranged relative to this first axial electrode unit; And
One second electrode subelement, this second electrode subelement is arranged relative to this first axial electrode unit and this first electrode subelement,
Wherein this first electrode subelement comprises:
One first electrode subelement hollow-out parts;
The one first long limit of electrode subelement first;
The one first long limit of electrode subelement second;
One first electrode subelement first minor face, the two ends of this first electrode subelement first minor face are connected to the one end on this long limit of the first electrode subelement first and the one end on this long limit of the first electrode subelement second respectively; And
One first electrode subelement second minor face, the two ends of this first electrode subelement second minor face are connected to the other end on this long limit of the first electrode subelement first and the other end on this long limit of the first electrode subelement second respectively, this long limit of the first electrode subelement first, this long limit of the first electrode subelement second, this first electrode subelement first minor face and this first electrode subelement second minor face surround into this first electrode subelement hollow-out parts
Wherein this second electrode subelement comprises:
One second electrode subelement hollow-out parts;
The one second long limit of electrode subelement first;
The one second long limit of electrode subelement second;
One second electrode subelement first minor face, the two ends of this second electrode subelement first minor face are connected to the one end on this long limit of the second electrode subelement first and the one end on this long limit of the second electrode subelement second respectively; And
One second electrode subelement second minor face, the two ends of this second electrode subelement second minor face are connected to the other end on this long limit of the second electrode subelement first and the other end on this long limit of the second electrode subelement second respectively, this long limit of the second electrode subelement first, this long limit of the second electrode subelement second, this second electrode subelement first minor face and this second electrode subelement second minor face surround into this second electrode subelement hollow-out parts, wherein have a gap between this first electrode subelement second minor face and this second electrode subelement first minor face.
2. there is the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 1, it is characterized in that, wherein this first electrode subelement also comprises a plurality of first electrode subelement compensating electrode, and those the first electrode subelement compensating electrodes connect this long limit of the first electrode subelement first or this long limit of the first electrode subelement second.
3. there is the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 2, it is characterized in that, wherein this second electrode subelement also comprises a plurality of second electrode subelement compensating electrode, and those the second electrode subelement compensating electrodes connect this long limit of the second electrode subelement first or this long limit of the second electrode subelement second.
4. have the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 3, it is characterized in that, wherein this first electrode subelement compensating electrode is square or L-type; This second electrode subelement compensating electrode is square or L-type.
5. have the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 4, it is characterized in that, wherein this first axial electrode unit is a rectangle.
6. have the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 5, it is characterized in that, wherein the length on this long limit of the first electrode subelement first equals the length on this long limit of the first electrode subelement second; The length on this long limit of the second electrode subelement first equals the length on this long limit of the second electrode subelement second.
7. have the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 6, it is characterized in that, wherein the length of this first electrode subelement first minor face equals the length of this first electrode subelement second minor face; The length of this second electrode subelement first minor face equals the length of this second electrode subelement second minor face.
8. have the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 7, it is characterized in that, wherein this first electrode subelement is a rectangle; This second electrode subelement is a rectangle.
9. have the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 8, it is characterized in that, wherein this first electrode subelement hollow-out parts is a rectangle; This second electrode subelement hollow-out parts is a rectangle.
10. there is the electrode structure of the Touch Screen reducing series impedance and stray capacitance as claimed in claim 9, it is characterized in that, the width in this gap wherein between this first electrode subelement second minor face and this second electrode subelement first minor face equals the width between those the first axial electrode unit.
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| CN201310220157.0A CN104216550B (en) | 2013-06-05 | 2013-06-05 | Electrode structure capable of reducing series impedance and stray capacitance of touch screen |
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| CN201310220157.0A CN104216550B (en) | 2013-06-05 | 2013-06-05 | Electrode structure capable of reducing series impedance and stray capacitance of touch screen |
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| CN104216550A true CN104216550A (en) | 2014-12-17 |
| CN104216550B CN104216550B (en) | 2017-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353934A (en) * | 2015-12-03 | 2016-02-24 | 南京华睿川电子科技有限公司 | Capacitive touch screen sensor and capacitive touch screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090002337A1 (en) * | 2007-06-28 | 2009-01-01 | Sense Pad Tech Co., Ltd | Capacitive-type touch panel |
| TW201013483A (en) * | 2008-09-24 | 2010-04-01 | Chi Hsin Electronics Corp | Touch-control signal transmission circuit for touch-control type liquid crystal display |
| TW201250562A (en) * | 2011-04-28 | 2012-12-16 | Nissha Printing | Mutual capacitance type touch panel |
-
2013
- 2013-06-05 CN CN201310220157.0A patent/CN104216550B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090002337A1 (en) * | 2007-06-28 | 2009-01-01 | Sense Pad Tech Co., Ltd | Capacitive-type touch panel |
| TW201013483A (en) * | 2008-09-24 | 2010-04-01 | Chi Hsin Electronics Corp | Touch-control signal transmission circuit for touch-control type liquid crystal display |
| TW201250562A (en) * | 2011-04-28 | 2012-12-16 | Nissha Printing | Mutual capacitance type touch panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353934A (en) * | 2015-12-03 | 2016-02-24 | 南京华睿川电子科技有限公司 | Capacitive touch screen sensor and capacitive touch screen |
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| CN104216550B (en) | 2017-04-12 |
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