CN102339178A - Capacitive touch board for improving linear response - Google Patents
Capacitive touch board for improving linear response Download PDFInfo
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- CN102339178A CN102339178A CN2010102389590A CN201010238959A CN102339178A CN 102339178 A CN102339178 A CN 102339178A CN 2010102389590 A CN2010102389590 A CN 2010102389590A CN 201010238959 A CN201010238959 A CN 201010238959A CN 102339178 A CN102339178 A CN 102339178A
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- capacitive touch
- inductor
- distance
- touch control
- control plate
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Abstract
The invention discloses a capacitive touch board for improving linear response, which is invented for improving the linear response of the capacitive touch board. The capacitive touch board comprises a plurality of sensors, wherein each sensor is provided with a plurality of parallel adjacent traces; a certain distance is reserved between the centers of adjacent sensors; and a maximum gap smaller than the distance is reserved between adjacent traces. By adopting the structure, the maximum gaps MXgap and Mygap between the adjacent traces are respectively smaller than PX and PY, so that the capacitance variation linearly changes more stably whether the capacitance variation moves towards X direction or Y direction and further the linear response of the capacitive touch board is improved.
Description
Technical field
The present invention relates to a kind of capacitive touch control plate, particularly a kind of capacitive touch control plate that improves linear response.
Background technology
As shown in Figure 1; The two-dimentional formula capacitive touch control plate of convention utilizes the touching of inductor Y1, Y2 and the Y3 detecting object of inductor X1, X2 and X3 and a plurality of Y directions of a plurality of directions Xs; Each inductor all is made up of a trace (trace), and each bar trace all is to be in series with maximization trace area by a plurality of rhombus battery lead plates, and wherein the distance between the center of the adjacent inductor of directions X is PX; Maximal clearance between the adjacent traces of directions X is MXgap; Distance between the center of the adjacent inductor of Y direction is PY, and the maximal clearance between the adjacent traces of Y direction is MYgap, and maximal clearance MXgap and MYgap equal PX and PY respectively.Capacitive touch control plate is to come identification whether the object touching is arranged by the capacitance change on detecting inductor X1, X2, X3, Y1, Y2 and the Y3, and the capacitance change that produces size is relevant with contact area between object and inductor.
When object during in position 10; Though touch trace Y1, the Y2 of trace X2, X3 and the Y direction of directions X simultaneously, inductor X2, Y2 are had bigger contact area, capacitance change is more obvious; Inductor X3, Y1 had less contact area; Capacitance change is more not obvious, the object's position that therefore calculates will be partial to coordinate (X2, Y2).If object 10 moves to position 12 along directions X from the position, then the capacitance change on the Y direction can rise and fall and beat, and causes the Y coordinate that parses to have than cataclysm and produces bigger nonlinear response, causes lower object positioning identification rate.
Summary of the invention
For overcoming above-mentioned defective, the objective of the invention is to propose a kind of capacitive touch control plate that improves linear response.
According to the present invention, a kind of capacitive touch control plate that improves linear response comprises many traces, and wherein each bar trace or at least two adjacent traces form an inductor, and the distance between the center of adjacent inductor is greater than the maximal clearance between the adjacent traces.
Adopt said structure; Maximal clearance MXgap between the adjacent traces and MYgap are respectively less than PX and PY; No matter therefore object moves toward directions X or Y direction, capacitance change all presents more stable linear change, thereby has improved the linear response of capacitive touch control plate.
Description of drawings
Fig. 1 is the two-dimentional formula capacitive touch control plate of convention;
Fig. 2 is the first embodiment of the present invention;
Fig. 3 is the second embodiment of the present invention
Fig. 4 is the third embodiment of the present invention;
Fig. 5 is the fourth embodiment of the present invention; And
Fig. 6 is the fifth embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 2 is the first embodiment of the present invention; This capacitive touch control plate has the parallel traces 20,22,24,26,28 and 30 and the parallel traces 32,34,36,38,40 and 42 of many Y directions of many directions Xs; Wherein trace 20 and 22 electrically connects the inductor X1 that forms directions X; Trace 24 and 26 electrically connects the inductor X2 that forms directions X, and trace 28 and 30 electrically connects the inductor X3 that forms directions X, and trace 32 and 34 electrically connects the inductor Y1 that forms the Y direction; Trace 36 and 38 electrically connects the inductor Y2 that forms the Y direction, and trace 40 and 42 electrically connects the inductor Y 3 that forms the Y direction.Trace on directions X and the Y direction can form inductor in the inner or outside electric connection of Trackpad.Distance between the center of the adjacent inductor on the directions X is PX, and the maximal clearance between the adjacent traces is Mxgap.Distance between the center of the adjacent inductor on the Y direction is PY, and the maximal clearance between the adjacent traces is MYgap.In this Trackpad, directions X maximal clearance MXgap equals 0.5PX, and Y direction maximal clearance MYgap equals 0.5PY.When object touches capacitive touch control plate; Shown in the position 50 of Fig. 2; Changing appears in the last capacitance of inductor Y2, Y3 that Trackpad detects inductor X2, X3 and the Y direction of directions X; And then the position of orienting object accurately, and since maximal clearance MXgap and the MYgap between the adjacent traces respectively less than PX and PY, no matter therefore object 50 moves toward directions Xs or Y direction in the position; Capacitance change all presents more stable linear change, thereby has improved the linear response of capacitive touch control plate.Among other embodiment, also can only dwindle the ratio of the distance between the center of the maximal clearance between the adjacent traces and inductor on a certain direction, improve the linear response on a certain direction of capacitive touch control plate.
Fig. 3 is the second embodiment of the present invention; It comprises inductor X1, X2 and the X3 of directions X and inductor Y1, Y2 and the Y3 of Y direction; Each inductor all is made up of a trace; But wherein each bar trace all is made up of square and rectangular electrodes plate, and this embodiment makes the maximal clearance MYgap between the adjacent traces on maximal clearance MXgap between the adjacent traces on the directions X and the Y direction equal distance P Y half the between the center of adjacent inductor on distance P X and the Y direction between the center of adjacent inductor on the directions X respectively by the shape that changes battery lead plate.The shape of battery lead plate also can be an irregular figure, like Fig. 4 and shown in Figure 5.The Trackpad of Fig. 3 also can electrically connect two adjacent traces and formation inductor X1, X2, X3, Y1, Y2 and Y3 as Fig. 2; As shown in Figure 6; Thus, maximal clearance MXgap and maximal clearance MYgap have only 1/4th of inductor distance P X and PY respectively.
Claims (8)
1. a capacitive touch control plate that improves linear response is characterized in that, comprises:
A plurality of inductors, each inductor have many parallel and adjacent traces; And
Wherein, have a distance between the center of adjacent inductor, and have a maximal clearance less than this distance between the adjacent traces.
2. capacitive touch control plate as claimed in claim 1 is characterized in that, this each inductor is to form at Trackpad these many traces of inner electric connection.
3. capacitive touch control plate as claimed in claim 1 is characterized in that, this each inductor is to form at Trackpad these many traces of outside electric connection.
4. capacitive touch control plate as claimed in claim 1 is characterized in that, this maximal clearance is the half the of this distance.
5. capacitive touch control plate as claimed in claim 1 is characterized in that, this maximal clearance is 1/4th of this distance.
6. capacitive touch control plate as claimed in claim 1 is characterized in that the second distance between the center of these wantonly two adjacent traces is greater than this maximal clearance.
7. a capacitive touch control plate that improves linear response is characterized in that, comprises:
Many parallel traces, each bar trace are an inductor; And
Wherein, have a distance between the center of adjacent traces, and have a maximal clearance less than this distance between the adjacent traces.
8. capacitive touch control plate as claimed in claim 7 is characterized in that, this maximal clearance is the half the of this distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102389590A CN102339178A (en) | 2010-07-28 | 2010-07-28 | Capacitive touch board for improving linear response |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102389590A CN102339178A (en) | 2010-07-28 | 2010-07-28 | Capacitive touch board for improving linear response |
Publications (1)
| Publication Number | Publication Date |
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| CN102339178A true CN102339178A (en) | 2012-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102389590A Pending CN102339178A (en) | 2010-07-28 | 2010-07-28 | Capacitive touch board for improving linear response |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104484084A (en) * | 2014-12-18 | 2015-04-01 | 合肥鑫晟光电科技有限公司 | Driving method of touch screen, touch screen and display device |
| CN113906373A (en) * | 2019-05-29 | 2022-01-07 | 普瑞有限公司 | Input device with a movable handle on a capacitive detection surface and with capacitive coupling means |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200849073A (en) * | 2007-06-14 | 2008-12-16 | Elan Microelectronics Corp | Object location sensor of touch pad |
| US20090219258A1 (en) * | 2008-08-01 | 2009-09-03 | 3M Innovative Properties Company | Touch screen sensor with low visibility conductors |
| CN101571781A (en) * | 2008-04-30 | 2009-11-04 | 统宝光电股份有限公司 | Display device |
| US20090273577A1 (en) * | 2008-04-30 | 2009-11-05 | Apple Inc. | Moire-Free Touch Screen with Tilted or Curved ITO Pattern |
-
2010
- 2010-07-28 CN CN2010102389590A patent/CN102339178A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200849073A (en) * | 2007-06-14 | 2008-12-16 | Elan Microelectronics Corp | Object location sensor of touch pad |
| CN101571781A (en) * | 2008-04-30 | 2009-11-04 | 统宝光电股份有限公司 | Display device |
| US20090273577A1 (en) * | 2008-04-30 | 2009-11-05 | Apple Inc. | Moire-Free Touch Screen with Tilted or Curved ITO Pattern |
| US20090219258A1 (en) * | 2008-08-01 | 2009-09-03 | 3M Innovative Properties Company | Touch screen sensor with low visibility conductors |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104484084A (en) * | 2014-12-18 | 2015-04-01 | 合肥鑫晟光电科技有限公司 | Driving method of touch screen, touch screen and display device |
| US9965084B2 (en) | 2014-12-18 | 2018-05-08 | Boe Technology Group Co., Ltd. | Driving method of touch screen, touch screen and display apparatus |
| CN113906373A (en) * | 2019-05-29 | 2022-01-07 | 普瑞有限公司 | Input device with a movable handle on a capacitive detection surface and with capacitive coupling means |
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Application publication date: 20120201 |