CN104156126A - Touch panel with auxiliary judgment function - Google Patents
Touch panel with auxiliary judgment function Download PDFInfo
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- CN104156126A CN104156126A CN201310179647.0A CN201310179647A CN104156126A CN 104156126 A CN104156126 A CN 104156126A CN 201310179647 A CN201310179647 A CN 201310179647A CN 104156126 A CN104156126 A CN 104156126A
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Abstract
The invention discloses a touch panel with the auxiliary judgment function. An effective sensing area of the touch panel comprises a plurality of specific sensing areas which do not overlap one another, the effective sensing area is provided with a main sensing circuit, one or more specific sensing areas are respectively provided with an auxiliary sensing circuit for recognizing actual touch coordinates and ghost finger coordinates, and therefore the recognition accuracy and the operation efficiency can be improved.
Description
Technical field
The present invention is relevant to a kind of contact panel, and espespecially a kind of tool auxiliary judgment circuit can contribute to the capacitance type touch-control panel that judges that ghost is put.
Background technology
That contact panel (touch panel) has is easy to operate, reaction velocity fast and joint space-efficient advantage, and can provide user more intuition and control mode easily, therefore be often used in all types of consumption electronic products such as panel computer, notebook computer, personal digital assistant (PDA), mobile phone, satellite navigation system and audio and video player etc.Common touch technology comprises resistance-type, condenser type and optical profile type etc. now.Capacitance type touch-control panel, owing to having the features such as high-accuracy, multi-point touch, high durability and high-res, has become the mainstream technology that at present middle high-order consumption electronic products are used.Capacitive touch control techniques is mainly while contact with Trackpad, because of the inductance capacitance variation that electrostatical binding produces, to judge time and the position of touch-control event generation by detecting human body (or object).
Fig. 1 is the schematic diagram of a capacitance type touch-control panel 10 in prior art.Capacitive touch control plate 10 is provided with a sensing array, by most sense capacitance, formed, that is along the m capable electric capacity string X1～Xm of vertical direction arrangement and the n column capacitance string Y1～Yn arranging along horizontal direction.The touch points of capacitive touch control plate can be defined by two-dimensional coordinate, and for example the touch coordinate of the 3rd row electric capacity string X3 and the 3rd column capacitance string Y3 intersection is (X3, Y3).The capacitance of supposing each inductance capacitance is all C, and when not assigning touch-control order, the capacitance of every a line sense capacitance is n*C, and the capacitance of each row sense capacitance is m*C.If the intersection at the 3rd row electric capacity string X3 and the 3rd column capacitance string Y3 is assigned in touch-control order, the capacitance that capacitance type touch-control panel detects the 3rd row electric capacity string X3 is (n*C+ △ C1), and the capacitance that detects the 3rd column capacitance string Y3 is (m*C+ △ C2), therefore can judge that touch coordinate is as (X3, Y3).
Fig. 2 is the multi-point touch application schematic diagram of the capacitance type touch-control panel 10 of prior art.Suppose to have two finger contacts to touch coordinate (X3 simultaneously, Y3) and (Xm-1, Yn-1), electric capacity string X3, Xm-1, Y3 and Yn-1 can sense capacitance variations simultaneously, thereby will judge at coordinate (X3, Y3), (X3, Yn-1), (Xm-1, Y3) and (Xm-1, Yn-1) located touch-control event and occurred.Yet (X3, Yn-1) and (Xm-1, Y3) be practical touch coordinate not, but false judgment and terrible point (ghost finger) coordinate reported by mistake.Therefore, the capacitance type touch-control panel 10 of prior art, when the application of multi-point touch, often needs to carry out Multiple-Scan to pick out practical touch coordinate and terrible point coordinate, therefore can affect operational effectiveness.
Summary of the invention
The invention provides a kind of contact panel of tool auxiliary judgment function, it comprises an effective sensing region, and it comprises most the specific sensing regions that do not overlap each other; One main sensing circuit, is arranged in this effective sensing region and comprises most sense capacitance, and this majority sense capacitance is arranged in the capable sense capacitance of m along a first direction, and is arranged in n row sense capacitance along the second direction perpendicular to this first direction; And one first auxiliary sensing circuit, be arranged in one first specific sensing region in this majority specific sensing region and comprise most bar the first sense wires, each first sense wire is arranged in this majority sense capacitance between two relative the first sense capacitance in this first sensing region, and this two corresponding first sense capacitance of getting along well contacts with each other, and wherein the area of this first specific sensing region is less than the area of this effective sensing region.By above-mentioned technological means, the present invention can reach the technique effect that improves identification precision and improve operational effectiveness.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a capacitance type touch-control panel in prior art.
Fig. 2 is the multi-point touch application schematic diagram of the capacitance type touch-control panel of prior art.
Fig. 3 to Fig. 7 is the vertical view of capacitance type touch-control panel in the embodiment of the present invention.
Fig. 8 and Fig. 9 are the schematic diagram of capacitance type touch-control panel structure in the embodiment of the present invention.
[symbol description]
10～15 capacitance type touch-control panels
20 electric capacity
30 sense wires
X1～Xm, Y1～Yn electric capacity string
The main sensing circuit of A0
B1～B2 assists sensing circuit
S0～S6 sensing region
Embodiment
The invention provides a kind of capacitance type touch-control panel, which is provided with main sensing circuit and an at least one auxiliary sensing circuit, can utilize auxiliary sensing circuit to pick out practical touch coordinate and terrible point coordinate.Fig. 3 to Fig. 7 is the vertical view of capacitance type touch-control panel 11～15 in the embodiment of the present invention, has shown the set-up mode of main sensing circuit and auxiliary sensing circuit.Most specific sensing region S0～Sx(x that do not overlap each other of effective sensing district inclusion of capacitance type touch-control panel 11～15 are positive integer), wherein specific sensing region S1～Sx is illustrated by the broken lines.Main sensing circuit A0 is arranged in effective sensing region (S0～Sx), and auxiliary sensing circuit B1～Bx is arranged at respectively in specific sensing region S1～Sx.In other words, in the embodiment of x=2 shown in Fig. 3 to Fig. 7, in specific sensing region S0, be only provided with main sensing circuit A0, in specific sensing region S1, be provided with main sensing circuit A0 and auxiliary sensing circuit B1 simultaneously, and in specific sensing region S2, be provided with main sensing circuit A0 and auxiliary sensing circuit B2 simultaneously.In other embodiment of the present invention, x can be the integer that is greater than 2, now in specific sensing region Sx, is provided with main sensing circuit A0 and auxiliary sensing circuit Bx simultaneously.
In the embodiment shown in fig. 3, capacitance type touch-control panel 11 is provided with a main sensing circuit A0 and two auxiliary sensing circuit B1～B2, and specific sensing region S0～S2 that effectively 3 of sensing district inclusions do not overlap each other.The area of specific sensing region S0～S2 is less than the area of effective sensing region, and specific sensing region S1 and S2 lay respectively at two diagonal angles in effective sensing region S0.In the application of multi-point touch, if P1 and P2 are practical touch coordinate, the main sensing circuit A0 of capacitance type touch-control panel 11 may judge out terrible point coordinate Q1 and Q2 by accident.Because coordinate P1 whereabouts is provided with main sensing circuit A0 and auxiliary sensing circuit B1 simultaneously, coordinate P2 whereabouts is provided with main sensing circuit A0 and auxiliary sensing circuit B2 simultaneously, and coordinate Q1 and Q2 whereabouts are only provided with main sensing circuit A0, therefore auxiliary sensing circuit B1 and the B2 of capacitance type touch-control panel 11 only can detect capacitance variations at coordinate P1 and P2, and capacitance type touch-control panel 11 can be learnt the terrible point coordinate that coordinate Q1 and Q2 point are erroneous judgement.
In the embodiment shown in fig. 4, capacitance type touch-control panel 12 is provided with a main sensing circuit A0 and 2 auxiliary sensing circuit B1～B2, and specific sensing region S0～S2 that effectively 3 of sensing district inclusions do not overlap each other.The area of specific sensing region S0～S2 is less than the area of effective sensing region, and specific sensing region S1～S2 can be positioned at the arbitrary position of effective sensing region, and area is different.In the application of multi-point touch, if P1 and P2 are practical touch coordinate, the main sensing circuit A0 of capacitance type touch-control panel 12 may judge out terrible point coordinate Q1 and Q2 by accident.Because coordinate P1 and coordinate Q1 whereabouts are provided with main sensing circuit A0 and auxiliary sensing circuit B1 simultaneously, coordinate P2 whereabouts is provided with main sensing circuit A0 and auxiliary sensing circuit B2 simultaneously, and coordinate Q2 whereabouts is only provided with main sensing circuit A0, therefore auxiliary sensing circuit B1 can detect capacitance variations but can not detect capacitance variations at Q1 point at P1 point, and auxiliary sensing circuit B2 can detect capacitance variations at P2 point, capacitance type touch-control panel 12 can learn that coordinate Q1 is for the terrible point coordinate of erroneous judgement.
In the embodiment shown in fig. 5, capacitance type touch-control panel 13 is provided with a main sensing circuit A0 and two auxiliary sensing circuit B1～B2, and specific sensing region S0～S2 that effectively 3 of sensing district inclusions do not overlap each other.The area of specific sensing region S0～S2 is less than the area of effective sensing region, and specific sensing region S1 and S2 lay respectively at the same side in effective sensing region S0, for example Lower Half.In the application of multi-point touch, suppose that P1 and P2 are practical touch coordinate, the main sensing circuit A0 of capacitance type touch-control panel 13 may judge out terrible point coordinate Q1 and Q2 by accident.Because coordinate P1 whereabouts is provided with main sensing circuit A0 and auxiliary sensing circuit B1 simultaneously, and coordinate Q1 whereabouts is provided with main sensing circuit A0 and auxiliary sensing circuit B2 simultaneously, therefore the auxiliary sensing circuit B1 of capacitance type touch-control panel 13 can detect capacitance variations at coordinate P1, and auxiliary sensing circuit B2 can not detect capacitance variations at Q1 point, capacitance type touch-control panel 12 can learn that coordinate Q1 is for the terrible point coordinate of erroneous judgement.
In the embodiment shown in fig. 6, capacitance type touch-control panel 14 is provided with a main sensing circuit A0 and an auxiliary sensing circuit B1, and specific sensing region S0～S1 that effectively 2 of sensing district inclusions do not overlap each other.The area of specific sensing region S0～S1 is less than the area of effective sensing region, and specific sensing region S1 lays respectively at one jiao of effective sensing region S0, for example the lower left corner.In the application of multi-point touch, suppose that P1 and P2 are practical touch coordinate, the main sensing circuit A0 of capacitance type touch-control panel 14 may judge out terrible point coordinate Q1 and Q2 by accident.Because coordinate P1 whereabouts is only provided with main sensing circuit A0, and coordinate Q1 whereabouts is provided with main sensing circuit A0 and auxiliary sensing circuit B1 simultaneously, therefore auxiliary sensing circuit B1 can not detect capacitance variations at Q1 point, and capacitance type touch-control panel 13 can learn that coordinate Q1 is for the terrible point coordinate of erroneous judgement.In like manner, if Q1 and Q2 are practical touch coordinate, and P1 and P2 are the terrible point coordinate of main sensing circuit A0 erroneous judgement, and now auxiliary sensing circuit B1 only can detect capacitance variations at Q1 point, and capacitance type touch-control panel 14 can learn that coordinate Q1 is practical touch coordinate.
Capacitance type touch-control panel 13 of the present invention and 14 can be applicable to the Trackpad of notebook computer, the sensing region S1 of capacitance type touch-control panel 13 and the position of sensing region S2 and large I correspond respectively to Trackpad right button and left button, and the position of the sensing region S1 of capacitance type touch-control panel 14 and large I are corresponding to Trackpad left button or right button.The multi-point touch application of notebook computer Trackpad comprises user one side moveable finger and presses Trackpad left button on one side, now may detect terrible point coordinate.As previously mentioned, capacitance type touch-control panel 13 of the present invention and 14 can utilize auxiliary sensing circuit B1 or B2 to judge practical touch coordinate.
The operation of physical keyboard provides many hot key combinations, that is by press a plurality of buttons to assign instruction simultaneously, for example press " Ctrl "+" C " to copy; simultaneously press " Shift " and letter key to switch capital and small letter simultaneously, or press " Ctrl "+" Alt "+" Delete " key to restart or to open task manager etc. simultaneously.Capacitance type touch-control panel 15 of the present invention can be applicable to the dummy keyboard of touch-control screen, as shown in Figure 7, capacitance type touch-control panel 15 is just showing a dummy keyboard, main sensing circuit is arranged at the effective sensing region corresponding to all virtual keys, and most auxiliary sensing circuits are arranged at the specific sensing region corresponding to conventional button.For instance, specific sensing region S1～S6 position and size, corresponding to conventional hot key " Ctrl ", " Shift " and " Alt ", arrange respectively auxiliary sensing circuit in it.As previously mentioned, capacitance type touch-control panel 15 of the present invention can utilize the auxiliary sensing circuit in specific sensing region S1～S6 to judge practical touch coordinate, therefore can pick out exactly the hot key combination that dummy keyboard receives, avoid affecting operation because judging terrible point coordinate by accident.
In the capacitance type touch-control panel 11～15 of the embodiment of the present invention, in specific sensing region S0, be only provided with main sensing circuit A0, it can adopt layout as shown in Figure 1 or the sensing array of other structure, and the structure shown in Fig. 1 does not limit category of the present invention.
With the embodiment shown in Fig. 6, explain, Fig. 8 and Fig. 9 are the schematic diagram of capacitance type touch-control panel 14 structures in the embodiment of the present invention.Fig. 8 is the vertical view of capacitance type touch-control panel 14, has shown the layout type of the interior main sensing circuit of all specific sensing region S0～S1 and auxiliary sensing circuit simultaneously.Fig. 9 is the amplification plan view of capacitance type touch-control panel 14, has shown the layout type of the interior main sensing circuit of specific sensing region S1 and auxiliary sensing circuit.Main sensing circuit can be by the sensing arrays that comprise most main electric capacity 20 and form, that is most column capacitance strings of arranging most row electric capacity strings and arrange along horizontal direction along vertical direction, as shown in Figure 8 and Figure 9.Each electric capacity 20 can adopt identical shaped layout, and Fig. 8 and Fig. 9 have shown the embodiment of rhombus, but does not limit category of the present invention.Auxiliary sensing circuit comprises most bar sense wires 30, be arranged between the electric capacity 20 of main sensing circuit, and the main sensing circuit of getting along well contacts with each other, as shown in Figure 9.
In sum, the present invention arranges a main sensing circuit in effective sensing region of capacitance type touch-control panel, and in the specific sensing region in effective sensing region, one or more auxiliary sensing circuits are set according to different application, therefore can utilize auxiliary sensing circuit to pick out easily practical touch coordinate and terrible point coordinate, and then improve identification precision and improve operational effectiveness.
Claims (9)
1. a contact panel for tool auxiliary judgment function, is characterized in that, comprises:
One effective sensing region, it comprises most the specific sensing regions that do not overlap each other;
One main sensing circuit, be arranged in this effective sensing region and comprise most sense capacitance, this majority sense capacitance is arranged in most row sense capacitance along a first direction, and is arranged in most row sense capacitance along the second direction perpendicular to this first direction; And
One first auxiliary sensing circuit, be arranged in one first specific sensing region in this majority specific sensing region and comprise most bar the first sense wires, each first sense wire is arranged in this majority sense capacitance between two corresponding the first sense capacitance in this first sensing region, and this two corresponding first sense capacitance of getting along well contacts with each other, and wherein the area of this first specific sensing region is less than the area of this effective sensing region.
2. contact panel as claimed in claim 1, is characterized in that, separately comprises:
One second auxiliary sensing circuit, be arranged in one second specific sensing region in this majority specific sensing region and comprise most bar the second sense wires, each second sense wire is arranged in this majority sense capacitance between two corresponding the second sense capacitance in this second sensing region, and this two corresponding second sense capacitance of getting along well contacts with each other, and wherein the area of this second specific sensing region is less than the area of this effective sensing region.
3. contact panel as claimed in claim 2, is characterized in that, this first specific sensing region and this second specific sensing region are positioned at two diagonal angles of this effective sensing region.
4. contact panel as claimed in claim 2, is characterized in that, this first specific sensing region and this second specific sensing region are positioned at the same side of this effective sensing region.
5. contact panel as claimed in claim 2, is characterized in that, the area of this first specific sensing region and this second specific sensing region is different.
6. contact panel as claimed in claim 1, is characterized in that, this first specific sensing region is positioned at a particular corner of this effective sensing region.
7. contact panel as claimed in claim 1, is characterized in that, this capacitance type touch-control panel is a Trackpad of an electronic installation, and the area of this first specific sensing region is relevant to a left button or a right button of this Trackpad.
8. contact panel as claimed in claim 1, is characterized in that, this capacitance type touch-control panel is a Trackpad of an electronic installation, and the area of this first specific sensing region is relevant to a left button and a right button of this Trackpad.
9. contact panel as claimed in claim 1, is characterized in that, this capacitance type touch-control panel is used for showing a dummy keyboard, and the area of this first specific sensing region and position are relevant to a specific keys of this dummy keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310179647.0A CN104156126A (en) | 2013-05-15 | 2013-05-15 | Touch panel with auxiliary judgment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310179647.0A CN104156126A (en) | 2013-05-15 | 2013-05-15 | Touch panel with auxiliary judgment function |
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| Publication Number | Publication Date |
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| CN104156126A true CN104156126A (en) | 2014-11-19 |
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| CN201310179647.0A Pending CN104156126A (en) | 2013-05-15 | 2013-05-15 | Touch panel with auxiliary judgment function |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080265914A1 (en) * | 2007-04-24 | 2008-10-30 | Kenichi Matsushima | Proximity detector and proximity detecting method |
| CN102109914A (en) * | 2009-12-25 | 2011-06-29 | 义隆电子股份有限公司 | Passive integrated circuit structure used for scanning touch panel and control method thereof |
| CN102645991A (en) * | 2011-02-21 | 2012-08-22 | 纬创资通股份有限公司 | Touch control device |
-
2013
- 2013-05-15 CN CN201310179647.0A patent/CN104156126A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080265914A1 (en) * | 2007-04-24 | 2008-10-30 | Kenichi Matsushima | Proximity detector and proximity detecting method |
| CN102109914A (en) * | 2009-12-25 | 2011-06-29 | 义隆电子股份有限公司 | Passive integrated circuit structure used for scanning touch panel and control method thereof |
| CN102645991A (en) * | 2011-02-21 | 2012-08-22 | 纬创资通股份有限公司 | Touch control device |
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Application publication date: 20141119 |