CN102375594B - Touch input device and scanning method thereof - Google Patents

Abstract

The invention relates to a scanning method suitable for a touch panel. The touch panel comprises a plurality of X-direction sensing lines and a plurality of Y-direction sensing lines. The X-direction sensing lines and the Y-direction sensing lines are arranged in a staggered mode, and a plurality of interaction capacitors are formed between each X-direction sensing line and each Y-direction sensing line. According to an embodiment of the present invention, the scanning method first selects the number of sensing lines to be measured to determine the measurement channel. And applying driving signals to other sensing lines except the measuring channel during scanning. After the driving signal is applied, two voltages on the measuring channel are detected to obtain the touch position on the touch panel.

Description

Touch input device and scanning method thereof

technical field

The invention relates to a scanning method suitable for a touch panel.

Background technique

Touch panels have been widely used in fields such as home appliances, communication devices, and electronic information devices. The touch panel is usually used in input interfaces of personal digital assistants (PDAs), electronic products and game consoles. Today's integration trend of touch panels and display screens allows users to use fingers or stylus to select representative images (icons) displayed on the panel, so that personal digital assistants, electronic products and game consoles can perform favorite functions. This kind of touch panel can also be applied to the public information inquiry system, so that the public can operate the system more efficiently.

In order to effectively detect the correct position of the panel touched by the user with a finger or a stylus, various technologies have been developed for the touch panel. For example, the touch panel can be designed as a capacitive touch panel, and its positioning principle is to determine the position of the touch point by using the change of the capacitance of the sensing grid embedded in the touch panel. In addition to the above-mentioned capacitive touch panels, according to different sensing principles, the touch panels also include resistive touch panels, optical touch panels and acoustic touch panels.

FIG. 1 shows a schematic diagram of a conventional touch panel 10 . The touch panel 10 includes a plurality of X-direction sensing lines X1-Xm and a plurality of Y-direction sensing lines Y1-Yn, wherein m and n are different or the same positive integers. The X-direction sensing lines X1-Xm and the Y-direction sensing lines Y1-Yn are embedded in different layers of the touch panel 10 . Referring to FIG. 1 , the X-direction sensing lines X1-Xm and the Y-direction sensing lines Y1-Yn are arranged in a staggered manner to form a sensing grid. In the sensing grid, a plurality of mutual capacitors (not shown) are formed between each X-direction sensing line and each Y-direction sensing line.

FIG. 2 shows a schematic diagram of a conventional touch input device 20 . The touch input device 20 includes the aforementioned touch panel 10 , an X-direction drive channel selection module 22 , a Y-direction drive channel selection module 24 and a touch sensing circuit 26 . 2, the touch sensing circuit 26 includes a selection module 262 and a differential detection module 264, wherein the selection module 262 further includes a first multiplexer 2622, a second multiplexer 2624 and To control a control circuit 2626 of the multiplexer.

During operation, the first multiplexer 2622 selects one to several sensing lines of the X-direction sensing lines X1-Xm or one to several sensing lines of the Y-direction sensing lines Y1-Yn , to select a first induced voltage. At the same time, the second multiplexer 2624 selects one to several of the X-direction sensing lines X1-Xm not selected by the first multiplexer 4222 or one to several of the Y-direction sensing lines Y1-Yn. The ones not selected by the first multiplexer 4222 are used to select a second induced voltage. The first and second induced voltages are respectively generated by inducing an excitation signal through an alternating capacitance. The first and second induced voltages are input to the differential detection module 264 . Since the induced voltage value will change with the touch between the user and the interaction capacitor, the touch position of the user can be known by detecting the difference of the induced voltage.

The touch panel 10 in FIG. 1 senses the position touched by the user by sequentially scanning the sensing lines. However, in the scanning mode of the prior art, the initial values of the first and second induced voltages will change according to the state of the corresponding sensing line in the last scanning sequence, resulting in a difference in the steady-state values of the first and second induced voltages. drift.

Therefore, it is necessary to propose a scanning method suitable for touch panels to solve the above problems.

Contents of the invention

One of the objects of the present invention is to provide a scanning method suitable for touch panels, which solves the problem that the initial values of the first and second induced voltages in the scanning method of the prior art are different from those in the previous scanning sequence. The problem of the drift of the steady-state value of the first and second induced voltages caused by the state change of the sensing line.

To achieve the above purpose, the touch panel scanning method of the present invention adopts the following technical solutions.

A scanning method, applied to a touch panel, the touch panel includes a plurality of X-direction sensing lines and a plurality of Y-direction sensing lines, the X-direction sensing lines and the Y-direction sensing lines For interleaved arrangement, and a plurality of mutual capacitances are formed between each X-direction sensing line and each Y-direction sensing line, the scanning method includes the following steps: selecting the number of sensing lines to be measured; according to the The number of sensing lines selects a plurality of first sensing lines in the X-direction sensing lines as measurement channels; when performing the first scan, output a drive signal to other sensing lines other than the first sensing line measuring line; when performing the first scan, detect two first voltages on the measurement channel; when performing the second scan, output the drive signal to the first sensing line; and when performing the second scan, During the second scan, two second voltages on the displaced measurement channel are detected according to the number of sensing lines to be measured, so as to sense the touch position.

Preferably, in the scanning method of the present invention, the arrangement of the plurality of sensing lines set as measurement channels is adjacent to each other.

Preferably, in the scanning method of the present invention, the arrangement of the plurality of sensing lines set as measurement channels is arranged at intervals.

Preferably, the scanning method of the present invention further includes a step of determining the user's touch position according to the first voltage and the second voltage.

Preferably, in the scanning method of the present invention, the touch panel determines the minimum value of the number of sensing lines in the X direction or the number of sensing lines in the Y direction according to the following equation: Num=4×N _SET −2, Wherein, Num represents the minimum value of the number of sensing lines in the X direction or the number of sensing lines in the Y direction, and N _SET represents the number of sensing lines to be measured.

It can be seen that the present invention discloses a scanning method suitable for a touch panel. The touch panel includes a plurality of X-direction sensing lines and a plurality of Y-direction sensing lines. The X-direction sensing lines and the Y-direction sensing lines are arranged alternately, and a plurality of mutual capacitors are formed between each X-direction sensing line and each Y-direction sensing line. The method comprises the following steps: selecting the number of sensing lines to be measured; selecting a plurality of first sensing lines in the X-direction sensing lines as a measurement channel according to the number of sensing lines; When scanning, output a driving signal to other sensing lines other than the first sensing line; when performing the first scanning, detect two first voltages on the measurement channel; when performing the second scanning outputting the driving signal to the first sensing line; and during the second scan, detecting two second voltages on the shifted measurement channel according to the number of sensing lines to be measured.

To achieve the above purpose, the touch panel scanning method of the present invention may also adopt another technical solution.

A scanning method, applied to a touch panel, the touch panel includes a plurality of X-direction sensing lines and a plurality of Y-direction sensing lines, the X-direction sensing lines and the Y-direction sensing lines For interleaved arrangement, and a plurality of mutual capacitances are formed between each X-direction sensing line and each Y-direction sensing line, the scanning method includes the following steps: selecting the number of sensing lines to be measured; according to the The number of sensing lines selects a plurality of first sensing lines in the X-direction sensing lines as a measurement channel; when performing the first scan, output a drive signal to the Y-direction sensing line and float Other sensing lines on the X-direction sensing line; during the first scan, detect two first voltages on the measurement channel; during the second scan, float the first voltage a sensing line; and during the second scan, detect two second voltages on the displaced measurement channel according to the number of sensing lines to be measured, so as to sense the touch position.

Preferably, in the scanning method of the present invention, the arrangement of the plurality of sensing lines set as measurement channels is adjacent to each other.

Preferably, in the scanning method of the present invention, the arrangement of the plurality of sensing lines set as measurement channels is arranged at intervals.

Preferably, the scanning method of the present invention further includes a step of determining the user's touch position according to the first voltage and the second voltage.

Preferably, in the scanning method of the present invention, the touch panel determines the minimum value of the number of sensing lines in the X direction or the number of sensing lines in the Y direction according to the following equation: Num=4×N _SET −2, where , Num represents the minimum value of the number of sensing lines in the X direction or the number of sensing lines in the Y direction, and N _SET represents the number of sensing lines to be measured.

It can be seen that the present invention discloses another scanning method suitable for a touch panel. The touch panel includes a plurality of X-direction sensing lines and a plurality of Y-direction sensing lines. The X-direction sensing lines and the Y-direction sensing lines are arranged alternately, and a plurality of mutual capacitors are formed between each X-direction sensing line and each Y-direction sensing line. The method comprises the following steps: selecting the number of sensing lines to be measured; selecting a plurality of first sensing lines in the X-direction sensing lines as a measurement channel according to the number of sensing lines; When scanning, output a drive signal to the Y-direction sensing line and float other sensing lines on the X-direction sensing line; when scanning for the first time, detect two The first voltage; during the second scan, floating the first sensing line; and during the second scan, detecting the position on the displaced measurement channel according to the number of sensing lines to be measured The two second voltages.

Another object of the present invention is to provide a new touch input device to solve the problem that in the prior art touch input device, the initial values of the first and second induced voltages vary with the corresponding sensing line in the last scanning sequence. The problem of the drift of the steady-state value of the first and second induced voltages caused by the state change.

To achieve the above objectives, the touch input device of the present invention adopts the following technical solutions.

A touch input device, comprising: a touch panel, including: a plurality of X-direction sensing lines; a plurality of Y-direction sensing lines, wherein the X-direction sensing lines and the Y-direction sensing lines are interlaced setting; and a plurality of interactive capacitors formed between each of the X-direction sensing lines and each of the Y-direction sensing lines; and a panel driving circuit for driving the touch panel, the panel The drive circuit includes: a selection circuit for selecting and shifting a measurement channel according to the number of sensing lines to be measured; a drive signal generation circuit for outputting a drive signal to the quantity according to the output signal of the selection circuit other sensing lines other than the measuring channel; and a detecting circuit for detecting two voltages on the measuring channel.

Preferably, in the touch input device of the present invention, the arrangement of the plurality of sensing lines in the measurement channel is adjacent to each other.

Preferably, in the touch input device of the present invention, the plurality of sensing lines in the measurement channel are arranged at intervals.

Preferably, the touch input device of the present invention further includes a judging circuit for judging the user's touch position according to the two voltages detected by the detection circuit.

It can be seen that the present invention discloses a touch input device. The touch input device includes a touch panel and a panel driving circuit for driving the touch panel. The touch panel includes a plurality of X-direction sensing lines and a plurality of Y-direction sensing lines. The X-direction sensing lines and the Y-direction sensing lines are arranged alternately, and a plurality of mutual capacitors are formed between each X-direction sensing line and each Y-direction sensing line. The panel drive circuit includes a selection circuit, a drive signal generation circuit and a detection circuit. The selection circuit selects and shifts a measurement channel according to the number of sensing lines to be measured. The driving signal generating circuit outputs a driving signal to other sensing lines other than the measuring channel according to the output signal of the selecting circuit. The detection circuit detects two voltages on the measurement channel.

Description of drawings

1 is a schematic diagram of a prior art touch panel;

2 is a schematic diagram of a prior art touch input device;

3 is a schematic block diagram of a touch input device according to an embodiment of the present invention;

FIG. 4 is a flowchart of a scanning method according to an embodiment of the present invention;

FIG. 5 is an embodiment of a scanning sequence according to the scanning method of FIG. 4;

6 is a flowchart of a scanning method according to another embodiment of the present invention;

FIG. 7 is a scanning sequence embodiment according to the scanning method of FIG. 6;

Fig. 8 is another scanning order embodiment according to the scanning method of Fig. 4;

FIG. 9 is another scanning sequence embodiment according to the scanning method of FIG. 6;

FIG. 10 is another scanning sequence embodiment according to the scanning method of FIG. 4; and

FIG. 11 is another embodiment of the scanning sequence according to the scanning method in FIG. 4 .

Detailed ways

The present invention will be described in further detail below in combination with specific embodiments and the accompanying drawings. It should be noted, however, that the practice of the invention is not limited to specific details familiar to those skilled in the relevant art. In other instances, well-known structures or steps are not described in detail in order to avoid unnecessarily limiting the invention. The following only describe the preferred embodiments of the present invention in detail, but the scope of the present invention is not limited by these embodiments, and the present invention can be widely applied in other embodiments besides these embodiments.

For the convenience of explaining the scanning method of the present invention, the touch input device implementing the scanning method of the present invention will be firstly described below. FIG. 3 shows a schematic block diagram of a touch input device 30 according to an embodiment of the present invention. The touch input device 30 includes a touch panel 32, a clock generation circuit 34, a drive signal generation circuit 36, an X direction sensing line selection module 38, a Y direction sensing line selection module 40 and a touch sensor Test circuit 42. 3, the touch sensing circuit 42 includes a selection module 422 and a differential detection module 424, wherein the selection module 422 further includes a first multiplexer 4222, a second multiplexer 4224 and To control a control circuit 4226 of the multiplexer.

In this embodiment, the touch panel 32 includes a plurality of X-direction sensing lines X1-X10 and a plurality of Y-direction sensing lines Y1-Y10. The X-direction sensing lines X1 - X10 and the Y-direction sensing lines Y1 - Y10 are embedded in different layers of the touch panel 32 . Referring to FIG. 3 , the X-direction sensing lines X1-X10 and the Y-direction sensing lines Y1-Y10 are arranged in a staggered manner to form, but not limited to, a well-shaped grid. In the well-shaped grid, a plurality of mutual capacitances (not shown) are formed between each X-direction sensing line and each Y-direction sensing line.

The clock generating circuit 34 generates a clock signal clk to the driving signal generating circuit 36 . The driving signal generating circuit 36 generates a driving signal DP to the X-direction sensing lines X1-X10 and the Y-direction sensing lines Y1-Y10 according to the clock signal clk. The driving signal DP can be, but not limited to, a square wave driving signal, a triangular wave driving signal or a sine wave driving signal.

The first multiplexer 4222 is used to select one to several sensing lines of the X-direction sensing lines X1-X10 or one to several sensing lines of the Y-direction sensing lines Y1-Y10, so as to A first induced voltage is selected. The second multiplexer 4224 is used to select one to several of the X-direction sensing lines X1-X10 not selected by the first multiplexer 4222 or one to one of the Y-direction sensing lines Y1-Y10 The ones not selected by the first multiplexer 4222 are used to select a second induced voltage. The first and second induced voltages are input to the differential detection module 424 . When an intersection of the X-direction sensing lines X1-X10 and the Y-direction sensing lines Y1-Y10 is touched, the induced voltage value will change through the change of mutual capacitance. Through the output result of the differential detection module 424 , the position touched by the user can be known.

FIG. 4 is a flow chart of a scanning method according to an embodiment of the present invention, the scanning method is applied to the above-mentioned touch input device. The method comprises the following steps: selecting the number of sensing lines to be measured (step S40); selecting a plurality of first sensing lines in the X-direction sensing lines as a measurement channel according to the number of sensing lines (step S42); when performing the first scan, output a driving signal to other sensing lines other than the first sensing line (step S44); when performing the first scan, detect the sensor located on the measurement channel Two first voltages (step S46); when performing the second scan, output the driving signal to the first sensing line (step S48); and when performing the second scan, according to the desired measurement The number of sensing lines detects two second voltages on the shifted measurement channels (step S50 ). The details of the scanning method of the present invention will be described below in conjunction with the device in FIG. 3 and the scanning sequence in FIG. 5 .

In step S40, the number of sensing lines to be measured is firstly selected. The number of sensing lines is an integer greater than or equal to 2. FIG. 5 is an embodiment of a scanning sequence according to the scanning method of FIG. 4 . In this embodiment, the number of sensing lines to be measured is set to 2, and the sensing lines X1 and X2 in the X-direction sensing lines are set as initial measurement channels. Referring to FIG. 5 , when the first scan is performed, a driving signal DP is output to other sensing lines other than the sensing lines X1 and X2 . During the first scan, the voltage on the sensing line X1 can be selected by the first multiplexer 4222 to be sent to a first input terminal R of the differential detection module 424 . Meanwhile, the voltage on the sensing line X2 can be selected by the second multiplexer 4224 to be sent to a second input terminal S of the differential detection module 424 . The differential detection module 424 can detect the difference between the two voltage values selected by the first and second multiplexers 4222 and 4224 to generate a touch sensing signal sout.

Then, when the second scan is performed, the initial measurement channel is shifted to the right to form a new measurement channel, that is, the sensing lines X3 and X4 . Therefore, the driving signal generation circuit 36 outputs the driving signal DP to other sensing lines except the sensing lines X3 and X4 . During the second scan, the voltage on the sensing line X3 can be selected by the first multiplexer 4222 to be sent to the first input terminal R of the differential detection module 424 . Meanwhile, the voltage on the sensing line X4 can be selected by the second multiplexer 4226 to be sent to the second input terminal S of the differential detection module 424 . The differential detection module 424 generates the touch sensing signal sout according to the voltage values of the two input terminals.

Similarly, in other scan sequences, the measurement channels are sequentially shifted to the right. The sensing lines other than the measurement channel are input with the driving signal DP. Through the coupling effect of the mutual capacitance, the driving signal DP will be coupled to the nodes on the measurement channel. If the user touches these nodes, the capacitance value of the interaction capacitor will change, resulting in a voltage change. By detecting the change of the voltage, the touched position of the touch panel 32 can be known. In this embodiment, the previous state of each set measurement channel is the driving state, so at each scan, the initial voltage value of the node of the measurement channel will be the same, and its steady-state voltage value can truly reflect The change in the capacitance value of the mutual capacitance.

FIG. 6 is a flow chart of a scanning method according to another embodiment of the present invention, the scanning method is applied to the above-mentioned touch input device. The method includes the following steps: selecting the number of sensing lines to be measured (step S60); selecting a plurality of first sensing lines in the X-direction sensing lines as measurement channels according to the number of sensing lines (step S62 ); when performing the first scan, output a driving signal to the Y direction sensing line and float other sensing lines on the X direction sensing line (step S64); During the second scan, detect two first voltages on the measurement channel (step S66); during the second scan, float the first sensing line (step S68); and during the second scan, During scanning, two second voltages on the shifted measurement channels are detected according to the number of sensing lines to be measured (step S70 ). The term "floating" here means that no voltage is applied to the corresponding sensing line. That is, the sensing line is in a high impedance state. The details of the scanning method of the present invention will be described below in conjunction with the device in FIG. 3 and the scanning sequence in FIG. 7 .

In step S60, the number of sensing lines to be measured is firstly selected. The number of sensing lines is an integer greater than or equal to 2. FIG. 7 is an embodiment of a scanning sequence according to the scanning method of FIG. 6 . In this embodiment, the number of sensing lines to be measured is set to 2, and the sensing lines X1 and X2 in the X-direction sensing lines are set as initial measurement channels. Referring to FIG. 7 , during the first scan, a driving signal DP is output to the Y-direction sensing lines Y1 - Y10 and floats other sensing lines on the X-direction sensing lines. During the first scan, the voltage on the sensing line X1 can be selected by the first multiplexer 4222 to be sent to a first input terminal R of the differential detection module 424 . Meanwhile, the voltage on the sensing line X2 can be selected by the second multiplexer 4224 to be sent to a second input terminal S of the differential detection module 424 . The differential detection module 424 can detect the difference between the two voltage values selected by the first and second multiplexers 4222 and 4224 to generate a touch sensing signal sout.

Then, when the second scan is performed, the initial measurement channel is shifted to the right to form a new measurement channel, that is, the sensing lines X3 and X4 . Therefore, the driving signal generating circuit 36 outputs the driving signal DP to the Y-direction sensing lines Y1 - Y10 , and other sensing lines except the sensing lines X3 and X4 are in a floating state. During the second scan, the voltage on the sensing line X3 can be selected by the first multiplexer 4222 to be sent to the first input terminal R of the differential detection module 424 . Meanwhile, the voltage on the sensing line X4 can be selected by the second multiplexer 4224 to be sent to the second input terminal S of the differential detection module 424 . The differential detection module 424 generates the touch sensing signal sout according to the voltage values of the two input terminals.

Similarly, in other scan sequences, the measurement channels are sequentially shifted to the right. The sensing lines outside the measurement channel are input with the driving signal DP or kept in a floating state. Through the coupling effect of mutual capacitance, the driving signal will be coupled to the nodes on the measurement channel. If the user touches these nodes, the capacitance value of the interaction capacitor will change, resulting in a voltage change. By detecting the change of the voltage, the touched position of the touch panel 32 can be known. In this embodiment, the previous state of the measurement channel set each time is a floating state, so in each scan, the initial voltage value of the node of the measurement channel will be the same, and its steady-state voltage value can be It truly reflects the change of the capacitance value of the interaction capacitance.

Referring to FIG. 5 and FIG. 7 , the plurality of sensing lines set as initial measurement channels are arranged adjacent to each other. However, according to another embodiment of the present invention, the arrangement of the plurality of sensing lines set as initial measurement channels may be arranged at intervals, as shown in FIGS. 8 and 9 . Referring to FIG. 8 , the sensing line X2 is located between the sensing lines X1 and X3 set as the initial measurement channel. When the driving panel performs the first scan, the sensing lines X2 and X4 are in the driving state. Then, when the driving panel is scanned for the second time, the sensing lines X2 and X4 are set as measurement channels. Since the previous states are the same (both are driving states), the initial voltage values on the measurement channels will be the same, and the steady-state voltage values can truly reflect the change of the capacitance value of the interaction capacitance. Similarly, when the driving panel in FIG. 9 performs the first scan, the sensing lines X2 and X4 are in a floating state. Then, during the second scan, the sensing lines X2 and X4 are set as measurement channels. Since their previous states are the same (both floating), the initial voltage values on the measurement channels will be the same.

FIG. 10 is another scanning sequence embodiment according to the scanning method of FIG. 4 . In this embodiment, the number of sensing lines to be measured is set to 3, and the sensing lines X1 , X2 and X3 in the X-direction sensing lines are set as initial measurement channels. When the driving panel in FIG. 10 is scanning for the first time, the sensing lines X4, X5 and X6 are in the driving state. Then, during the second scan, the sensing lines X4 , X5 and X6 are set as measurement channels. Since their previous states are the same (both are driving states), the initial voltage values on the measurement channels will be the same.

Similarly, FIG. 11 is another scanning sequence embodiment according to the scanning method in FIG. 4 . In this scanning sequence embodiment, the number of sensing lines to be measured is set to 4, and the sensing lines X1 , X2 , X3 and X4 in the X-direction sensing lines are set as initial measurement channels. When the driving panel in FIG. 11 is scanning for the first time, the sensing lines X5, X6, X7 and X8 are in the driving state. Then, during the second scan, the sensing lines X5 , X6 , X7 and X8 are set as measurement channels. Since their previous states are the same (both are driving states), the initial voltage values on the measurement channels will be the same. According to yet another embodiment of the present invention, when the driving panel in FIG. 11 performs the first scan, the sensing lines X5 , X6 , X7 and X8 may be in a floating state.

The minimum value of the number of sensing lines in the X direction or the number of sensing lines in the Y direction of the touch panel according to the scanning method of the present invention is related to the number of sensing lines to be measured. In a preferred embodiment, the minimum value of the number of sensing lines in the X direction or the number of sensing lines in the Y direction is determined according to the following equation (1):

Num＝4×N _SET -2 (1)

Wherein, Num represents the minimum value of the number of sensing lines in the X direction or the number of sensing lines in the Y direction, and N _SET represents the set number of initial measurement channels. For example, as shown in Figure 10, when the number of sensing lines to be measured is set to 3, the number of sensing lines in the X direction or the number of sensing lines in the Y direction of the touch panel needs to be at least 4×3-2 = 10, all the nodes of the X-direction sensing line or Y-direction sensing line of the touch panel can be completely detected. In another embodiment, as shown in FIG. 11 , when the number of sensing lines to be measured is set to 4, the number of sensing lines in the X direction or the number of sensing lines in the Y direction of the touch panel needs to be at least 4× 4-2=14, all nodes of the X-direction sensing line or Y-direction sensing line of the touch panel can be completely detected.

The technical content and technical features of the present invention have been disclosed above, but those skilled in the art may still make various substitutions and modifications based on the teaching and inspiration of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to the technical contents disclosed in the embodiments, but should include various replacements and modifications that do not deviate from the spirit of the present invention.

Claims (14)

1. a scan method, be applied in a contact panel, described contact panel comprises many directions X sense wires and many Y-direction sense wires, described directions X sense wire and described Y-direction sense wire are for being crisscross arranged, and a plurality of mutual electric capacity is formed between each directions X sense wire and each Y-direction sense wire, and described scan method comprises following steps:

The sense wire number of selecting wish to measure;

According to described sense wire number, select many first sense wires in described directions X sense wire as measuring passage;

When scanning for the first time, output one drives signal to described many first sense wires other sense wires in addition;

When scanning for the first time, the voltage difference that detection is positioned at two the first voltages on this measurement passage is to produce a corresponding touch sense signals;

When scanning for the second time, export described driving signal to described the first sense wire; And

When scanning for the second time, the voltage difference that the sense wire number detection measuring according to described wish is positioned at two second voltages on the measurement passage after displacement is to produce a corresponding touch sense signals;

According to described those touch sense signals with sensing position of touch.

2. scan method according to claim 1, the arrangement mode that is wherein set as measuring described many sense wires of passage is adjacent one another are.

3. scan method according to claim 1, is wherein set as measuring the arrangement mode of described many sense wires of passage for being spaced.

4. scan method according to claim 1, wherein further comprises the step that decides user's touch position according to described the first voltage and described second voltage.

5. scan method according to claim 1, wherein said contact panel is according to following equation, to determine the minimum value of described directions X sense wire number or described Y-direction sense wire number:

Num=4×N _SET-2；

Wherein, Num represents the minimum value of described directions X sense wire number or described Y-direction sense wire number, and N _sETrepresent the sense wire number that described wish measures.

6. a scan method, be applied in a contact panel, described contact panel comprises many directions X sense wires and many Y-direction sense wires, described directions X sense wire and described Y-direction sense wire are for being crisscross arranged, and a plurality of mutual electric capacity is formed between each directions X sense wire and each Y-direction sense wire, and described scan method comprises following steps:

The sense wire number of selecting wish to measure;

According to described sense wire number, select many first sense wires in described directions X sense wire as a measurement passage;

When scanning for the first time, output one drives signal to other sense wires on directions X sense wire described in described Y-direction sense wire suspension joint;

When scanning for the first time, the voltage difference that detection is positioned at two the first voltages on described measurement passage is to produce a corresponding touch sense signals;

When scanning for the second time, many first sense wires described in suspension joint; And

When scanning for the second time, the voltage difference that the sense wire number detection measuring according to this wish is positioned at two second voltages on the measurement passage after displacement is to produce a corresponding touch sense signals;

According to described those touch sense signals with sensing position of touch.

7. scan method according to claim 6, the arrangement mode that is wherein set as measuring described many sense wires of passage is adjacent one another are.

8. scan method according to claim 6, is wherein set as measuring the arrangement mode of described many sense wires of passage for being spaced.

9. scan method according to claim 6, wherein further comprises the step that decides user's touch position according to described the first voltage and described second voltage.

10. scan method according to claim 6, wherein said contact panel is according to following equation, to determine the minimum value of described directions X sense wire number or described Y-direction sense wire number:

Num=4×N _SET-2；

Wherein, Num represents the minimum value of described directions X sense wire number or described Y-direction sense wire number, and N _sETrepresent the sense wire number that described wish measures.

11. 1 kinds of touch-control input devices, comprise:

One contact panel, comprises:

Many directions X sense wires;

Many Y-direction sense wires, wherein said directions X sense wire and described Y-direction sense wire are for being crisscross arranged; And

A plurality of mutual electric capacity, is formed at described in each directions X sense wire and described in each between Y-direction sense wire; And

One panel drive circuit, in order to drive described contact panel, described panel drive circuit comprises:

One selects circuit, for the sense wire number measuring according to wish, selects and displacement one measurement passage;

One drive signal generation circuit, for selecting the output signal output one of circuit to drive signal to described measurement passage other sense wires in addition according to this; And

One testing circuit, for detection of two voltages that are positioned on described measurement passage.

12. touch-control input devices according to claim 11, the arrangement mode of described many sense wires in wherein said measurement passage is adjacent one another are.

13. touch-control input devices according to claim 11, the arrangement mode of described many sense wires in wherein said measurement passage is for being spaced.

14. touch-control input devices according to claim 11, wherein further comprise a decision circuitry, judge user's touch position for described two voltages that detect according to described testing circuit.

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