TWI395121B - Pressure detectable touch device - Google Patents

Description

Pressure sensitive touch device

The present invention relates to a touch device design, and more particularly to a pressure sensitive touch device that combines a capacitive and resistive touch operation mode.

The resistive touch panel is composed of an ITO (Indium Tin Oxide) film and a conductive glass (ITO Glass) separated by a plurality of insulating spacers, and a predetermined driving force is applied between the ITO film and the ITO glass. Voltage, by a touch object (such as a stylus) to touch the ITO film to form a depression, so that it contacts the underlying ITO glass to produce a voltage change, by converting the analog signal into a digital signal, and then by micro The arithmetic processing of the processor obtains the coordinate position of the touched point.

The capacitive touch panel basically uses the capacitive coupling change between the arranged transparent electrodes and the electrical conductor to detect the coordinate position of the touched point from the induced current generated. In the structure of the capacitive touch panel, the outermost layer is a thin ceria hardened layer transparent substrate, and the second layer is an ITO layer to establish a uniform electric field on the surface of the glass, when a touch object (such as a finger) Upon contact with the surface of the transparent substrate of the screen, the touch object is capacitively coupled to the electric field on the outer conductive layer to produce a slight change in current. Each electrode is responsible for measuring the current from each corner, and then the microprocessor calculates the coordinates of the touch object touch.

However, the resistive touch panel and the capacitive touch panel have limitations and disadvantages in operation. Among them, the resistive touch panel has the advantages of lower price, but needs to make the driving conductive layer and the sensing conductive layer contact when touching, so it is necessary to apply a certain degree of contact pressure, which is easy to damage the conductive layer, and is sensitive. The degree is also low. The capacitive touch panel has high sensitivity, but due to its action principle, the touch object must be selected as a conductor, such as a finger or a grounded contact, to conduct current. With the insulator as the touch object, the touch panel cannot be sensed.

Furthermore, in the electronic devices having the touch input function, the function of the pen write input has been widely used. When the user performs the pen input input, the user generally holds the stylus pen to generate a continuous coordinate position on the touch operation surface of the electronic device by a predetermined touch pressure and general writing text, and the microprocessor is The handwritten trajectory of the touch object on the touch operation surface is calculated according to the sensed number of consecutive coordinate positions. The application of the capacitive touch panel in this application of writing input has the problem that the writing operation is not smooth and the sensing is poor.

An object of the present invention is to provide a touch device that can respond to different touch position sensing modes according to a user's touch operation mode. When the user touches the touch operation surface of the touch device, the touch device operates. In the capacitive touch position sensing mode, when the user touches the touch operation surface of the touch device or operates the touch operation surface of the touch device with the pen input input, the touch device operates on the resistance Touch position sensing mode.

The technical means for solving the problems of the prior art is to design a touch device combining a capacitive and resistive touch operation mode for sensing a touch operation of a touch object on the touch device. action. The touch device mainly comprises a conductive layer, a first electrode pattern, a second electrode pattern, and a microprocessor. The conductive layer is formed on a first substrate and a driving voltage is applied. A first capacitor is formed between the first electrode pattern and the conductive layer, and a second capacitor is formed between the second electrode pattern and the conductive layer.

When the user touches the touch operation surface of the touch device, the conductive layer located at the operation position is pressed, and the distance between the conductive layer and the first electrode pattern, and the conductive layer and the second electrode are The distance between the patterns changes, so that the capacitance between the conductive layer and the first electrode pattern and the capacitive coupling between the conductive layer and the second electrode pattern change, so that the touch device operates in the capacitive touch position sensing mode. The microprocessor calculates a capacitive position of the touch object on the conductive layer according to the capacitive coupling change of the conductive layer and the first electrode pattern and the capacitive coupling change between the conductive layer and the second electrode pattern. .

When the user touches the touch operation surface of the touch device or operates the touch operation surface of the touch device with the pen input input, the conductive layer located at the operation position is pressed to make the conductive layer The strip electrodes of the first electrode pattern are in contact, and the distance between the two is zero, so that the touch device operates in the resistive touch position sensing mode, and the conductive layer is pressed and the first electrode pattern In contact, the microprocessor calculates at least one operating position of the touch object on the conductive layer according to the voltage change of the touched first electrode pattern.

Through the technical means adopted by the present invention, only the touch-sensitive touch device of the present invention and the simple scanning sensing process can be combined with the touch operation mode of the capacitive and resistive touch panels. There is no need to be limited by the touch object limitation of the conventional resistive touch panel or the capacitive touch panel, which makes the user's touch operation easier and applies the better touch sensing mode in different operation modes. The design of the invention can increase the application range of the touch device and has the advantages of the touch panel of the two touch operation modes.

The design of the present invention can automatically operate in an appropriate touch position sensing mode in response to different operating habits of different users when using the touch device. The design of the invention is also particularly suitable for application in the field of touch applications requiring writing input, and can effectively solve the problem that the writing operation of the general capacitive touch panel is not smooth and the sensing is poor.

The specific embodiments of the present invention will be further described by the following examples and the accompanying drawings.

Referring to Figure 1, there is shown a block diagram of a system in accordance with a first embodiment of the present invention. Fig. 2 is a perspective exploded view showing the main components in Fig. 1. As shown, the touch device 100 of the present invention mainly includes a first substrate 10, a second substrate 20, and a microprocessor 30.

The first substrate 10 is a transparent insulating layer having a conductive layer bonding surface 11 and a touch operation surface 12 (see also FIG. 4). A conductive layer 13 is formed on the conductive layer bonding surface 11 of the first substrate 10. The conductive layer 13 is mainly composed of a conductive material. When the conductive material is ITO (Indium Tin Oxide), a transparent conductive layer can be formed.

A driving voltage supply circuit 40 can generate a driving voltage V applied to the conductive layer 13 under the control of the microprocessor 30, so that the conductive layer 13 functions as a driving conductive layer for resistive touch.

The second substrate 20 has an electrode pattern bonding surface 21 corresponding to the conductive layer bonding surface 11 of the first substrate 10, and a first electrode pattern 22 and a second surface are formed over the electrode pattern bonding surface 21. Electrode pattern 23. As shown in FIGS. 2 and 4, the first electrode pattern 22 and the second electrode pattern 23 are separated by an insulating layer 24. The distance between the first electrode pattern 22 and the conductive layer 13 of the first substrate 10 is defined as a first predetermined distance d1. The distance between the second electrode pattern 23 and the conductive layer 13 of the first substrate 10 is defined as a second predetermined distance d2.

The first electrode pattern 22 has a plurality of strip electrodes s1, s2, s3, s4, s5, and s6, and a first capacitor Cx is formed between the conductive layer 13 of the first substrate 10. The respective strip electrodes s1, s2, s3, s4, s5, and s6 of the first electrode pattern 22 are formed in parallel with each other and spaced apart from each other on the insulating layer 24. At least one insulating spacer 60 is provided between the insulating layer 24 and the conductive layer 13 of the first substrate 10 where the strip electrodes s1, s2, s3, s4, s5 and s6 are not disposed. By the respective insulating spacers 60, the conductive layer 13 of the first substrate 10 can be prevented from coming into direct contact with the first electrode pattern 22.

The second electrode pattern 23 has a plurality of strip electrodes s1', s2', s3', s4', s5' and s6', and can form a second capacitance Cy with the conductive layer 13 of the first substrate 10. . The respective strip electrodes s1', s2', s3', s4', s5' and s6' are formed parallel to each other and spaced apart from each other on the electrode pattern-type bonding surface 21 of the second substrate 20.

In the present embodiment, the first electrode pattern 22 and the second electrode pattern 23 are respectively exemplified by six strip electrodes, but the number of strip electrodes is larger or smaller than this number.

Taking the first electrode pattern 22 as an example, the respective strip electrodes s1, s2, s3, s4, s5, and s6 are parallel to each other, maintained at a predetermined distance, and extend along the first axial direction Y. The strip electrodes s1', s2', s3', s4', s5', and s6' of the second electrode pattern 23 are also parallel to each other, maintain a predetermined distance, and extend along the second axis X. . Each of the strip electrodes s1, s2, s3, s4, s5, and s6 of the first electrode pattern 22 corresponds to the strip electrodes s1', s2', s3' of the second electrode pattern 23 vertically or at other angles. S4', s5' and s6'.

The respective strip electrodes s1, s2, s3, s4, s5, and s6 of the first electrode pattern 22 are connected to the microprocessor 30 via a first scanning circuit 51, respectively. The strip electrodes s1', s2', s3', s4', s5', and s6' of the second electrode pattern 23 are connected to the microprocessor 30 via a second scanning circuit 52, respectively.

Referring to FIG. 3 and FIG. 5 , FIG. 3 shows the relative positional relationship between the first electrode pattern 22 and the second electrode pattern 23 after the first substrate 10 and the second substrate 20 are bonded, and the fifth position is shown. The figure shows a plan view of a second substrate of the first embodiment of the present invention. As shown in the figure, each strip electrode s1, s2, s3, s4, s5, and s6 of the first electrode pattern 22 and each strip electrode s1', s2', s3' of the second electrode pattern 23, The s4', s5', and s6' are overlapped, and each of the overlapping positions represents a touch position on the touch device 100.

Referring to Figure 6, there is shown a plan view of a second substrate of a second embodiment of the present invention. As shown in the figure, the main components of the second substrate 20 of the present embodiment are mostly the same as those of the first embodiment, and the same components are designated by the same reference numerals, and details are not described herein again. The main difference is that each strip electrode s1", s2", s3", s4", s5", s6" of the first electrode pattern 22a and the strip electrodes s1', s2' of the second electrode pattern 23 The overlapping portions of s3', s4', s5', and s6' respectively have corresponding concave sections 221 to reduce the shielding effect of the first electrode pattern 22a on the second electrode pattern 23, so that the conductive layer The capacitive coupling effect between 13 and the second electrode pattern 23 is better.

7A, 7B and 8B, 7A and 7B are diagrams showing the operation of the touch device of the present invention when being operated by a user's finger, and FIG. 8 is a view showing the touch positions of the 7A and 7B. And the corresponding capacitance value table.

First, in this application example, the operation position at which the strip electrode s3 of the first electrode pattern 22 and the strip electrode s3' of the second electrode pattern 23 overlap is defined as the operation position P1, and the first electrode pattern 22 is The operation position at which the strip electrode s5 overlaps the strip electrode s3' of the second electrode pattern 23 is defined as the operation position P2 (the top view position can be referred to Fig. 3). In this application example, the touch object 7 for touch-operating the touch device 100 can be, for example, a finger, a conductive object, or other operating object.

The implementation principle of the present invention will be described below. When in a stationary state (ie, when not in operation), there is an effect of an electrical capacity coupling between the conductive layer 13 and the first electrode pattern 22 and the second electrode pattern 23, such that the conductive layer 13 and A first capacitor Cx exists between the first electrode patterns 22, and a second capacitor Cy exists between the conductive layer 13 and the second electrode pattern 23. However, since the conductive layer 13 is not touched between the first electrode pattern 22 and the second electrode pattern 23, there is no distance change and no capacitive coupling change.

When the touch object 7 touches one of the touch operation surfaces 12 of the first substrate 10, the operation position P1 (as shown in FIG. 7A), but the conductive layer 13 is not in contact with the first electrode pattern 22. When the conductive layer 13 at the operating position P1 is pressed, the first predetermined distance d1 between the conductive layer 13 and the first electrode pattern 22 is changed to d1' (where 0<d1'<d1 And the second predetermined distance d2 between the conductive layer 13 and the second electrode pattern 23 is changed to d2' (where 0 < d2' < d2), so that the conductive layer 13 and the first electrode pattern 22 are The first capacitor Cx changes to the first capacitor Cx1, and the second capacitor Cy between the conductive layer 13 and the second electrode pattern 23 changes to the second capacitor Cy1.

At this time, the touch device 100 operates in the capacitive touch position sensing mode, and the first scanning circuit 51 scans the strip electrodes s1, s2, s3, and s4 of the sensing conductive layer 13 and the first electrode pattern 22. The capacitive coupling of s5 and s6 changes, and a scan sensing signal N1 is sent to the microprocessor 30. The second scanning circuit 52 also sends out the capacitive coupling of the strip electrodes s1', s2', s3', s4', s5', and s6' of the second sensing pattern 13 and the second electrode pattern 23, and then sends out A sense signal N2 is scanned to the microprocessor 30.

The touch device 100 calculates the operation position of the touch object 7 on the touch operation surface 12 of the first substrate 10 according to the capacitive coupling change of the received first capacitor Cx1 and the second capacitor Cy1. The touch position of the touch object 7 is located at the operation position P1 where the strip electrode s3 of the second axial direction X overlaps the strip electrode s3' of the first axial direction Y.

When the touch object 7 is moved from the operation position P1 of the touch operation surface 12 of the first substrate 10 to the operation position P2 in a moving direction L (as shown in FIG. 7B), it is located at the operation position P2. The conductive layer 13 is pressed to change the first predetermined distance d1 between the conductive layer 13 and the first electrode pattern 22 to d1' (where 0<d1'<d1), and the conductive layer 13 and the second electrode pattern The second predetermined distance d2 between the patterns 23 is changed to d2' (where 0 < d2' < d2), so that the first capacitance Cx between the conductive layer 13 and the first electrode pattern 22 is changed to the first capacitance Cx2, At the same time, the second capacitance Cy between the conductive layer 13 and the second electrode pattern 23 is changed to the second capacitance Cy2, and the touch position is moved to the operation position P2 through the same scanning sensing method, and the same implementation is performed. The principle is not described here.

Referring to FIG. 9, a schematic diagram showing the operation of the touch device of the present invention with a touch object is shown. As shown in the figure, the position where the strip electrode s4 of the first electrode pattern 22 and the strip electrode s3' of the second electrode pattern 23 overlap in this application example is first defined as the operation position P3. The touch object 7a used for touch-operating the touch device 100 in this application example can be a conductive or non-conductive touch object (such as a stylus or any other object).

Referring to FIG. 10, it is a system block diagram showing the touch operation of the touch object 7a in FIG. When the user touches the operation position P3 of the touch operation surface 12 of the first substrate 10 with the touch object 7a in a predetermined touch direction I, the conductive layer 13 and the first electrode pattern located at the operation position P3 The strip electrode s4 of the type 22 is contacted by pressure, and the first predetermined interval d1 between the two is 0 (see also Fig. 4).

At this time, the touch device 100 operates in the resistive touch position sensing mode, and sends the driving voltage V to the conductive layer 13 of the first substrate 10 via the driving voltage supply circuit 40, and drives the driving voltage through the conductive layer 13 . V is applied to the corresponding position of the first electrode pattern 22. Therefore, when the conductive layer 13 of the first substrate 10 and the strip electrode s4 of the first electrode pattern 22 are pressed by the contact position due to the pressure, the driving voltage V is applied to the strip of the first electrode pattern 22. On the electrode s4, the voltage change of the strip electrode s4 sensing the first electrode pattern 22 is scanned via the first scanning circuit 51, and a scan sensing signal N3 is outputted to the microprocessor 30. The microprocessor 30 can calculate the operating position P3 of the touch object 7a on the touch operation surface 12 of the first substrate 10 according to the voltage change of the strip electrode s4 of the first electrode pattern 22.

Referring to FIGS. 11A, 11B, and 11C, which are schematic diagrams showing the handwriting input of the touch device of the present invention by using a touch object, and FIG. 12 shows that the touch object of FIG. 11A, 11B, and 11C is handwritten. Enter the system diagram for the operation.

When the touch object 11 of the first substrate 10 is touched by the touch object 7a in the pen input mode, the conductive layer 13 at each operation position is in contact with the first electrode pattern 22 by pressure. The touch device 100 is operated in the resistive touch position sensing mode. The operation of the user's pen input input generates a handwritten trajectory formed by a plurality of operation positions P4, P5, and P6 displaced in the moving direction L. At each of the operation positions P4, P5, and P6, the driving voltage supply circuit 40 sends out The driving voltage V is applied to the conductive layer 13 of the first substrate 10, and the driving voltage V is applied to each corresponding operating position of the first electrode pattern 22 via the conductive layer 13. Therefore, when the conductive layer 13 of the first substrate 10 is in contact with the strip electrode s3 of the first electrode pattern 22, the driving voltage V is applied to the strip electrode s3 of the first electrode pattern 22, and via the first scan. The circuit 51 scans the voltage change of the strip electrode s3 of the first electrode pattern 22, and outputs a scan sensing signal N4 to the microprocessor 30. The microprocessor 30 can calculate the operating position P4 of the touch object 7a on the touch operation surface 12 of the first substrate 10 according to the voltage change of the strip electrode s3 of the first electrode pattern 22. The respective operation positions P4, P5, P6 are sequentially sequentially sensed in this manner, and a sequence of scan sensing signals N4 are sequentially outputted from the first scanning circuit 51 to the microprocessor 30. The microprocessor 30 calculates the handwritten trajectory of the touch object 7a on the touch operation surface 12 of the first substrate 10 according to the sensed operation positions P4, P5, and P6.

Referring to Figures 13 and 14, Figure 13 is a block diagram showing a third embodiment of the present invention, and Figure 14 is a cross-sectional view showing a third embodiment of the present invention. As shown in the figure, the touch device 100a of the present embodiment is similar in structure to the first embodiment, and the main difference is that the second substrate 20 of the touch device 100a of the present embodiment includes only the first electrode pattern. Each of the strip electrodes s1, s2, s3, s4, s5, s6, and each strip electrode s1, s2, s3, s4, s5, s6 and the conductive layer 13 of the first substrate 10 are separated by a third predetermined distance D3, and is respectively connected to the microprocessor 30 via the first scanning circuit 51, and the same components are denoted by the same reference numerals and will not be described again.

The embodiment of the embodiment is similar to the previous embodiment, and also includes a combined capacitive and resistive touch operation mode. When the touch operation surface 12 of the touch device 100a is not subjected to a touch operation, the strip electrodes s1, s2, s3, s4, s5, s6 of the first electrode pattern 22 and the conductive layer 13 of the first substrate 10 are A first capacitance Cx is formed between the first electrode pattern 22 and the conductive layer 13 at a third predetermined distance d3.

When the touch object touches the touch operation surface 12 of the first substrate 10 but the conductive layer 13 is not in contact with the first electrode pattern 22, the conductive layer 13 located at the operation position is pressed. The third predetermined distance d3 between the conductive layer 13 and the first electrode pattern 22 is changed, so that the capacitive coupling between the conductive layer 13 and the first electrode pattern 22 is changed, so that the touch device 100a operates in a capacitive manner. Touch position sensing mode. The scanning sensing signal N1 is sent to the microprocessor 30 by the first scanning circuit 51 scanning the capacitive coupling change between the sensing conductive layer 13 and the first electrode pattern 22. The microprocessor 30 calculates the operating position of the touch based on the received capacitive coupling change.

Similar to the first embodiment, when the touch object touches the touch operation surface 12 of the touch device 100a or touches the touch operation surface 12 of the touch device 100a with the pen input input, the touch object is located at the operation position. The conductive layer 13 and the first electrode pattern 22 are contacted by pressure. At this time, the first predetermined spacing d3=0, so that the touch device 100a operates in the resistive touch position sensing mode. At this time, when the conductive layer 13 of the first substrate 10 is in contact with one of the first electrode patterns 22 (for example, the strip electrode s4), the driving voltage V is applied to the strip electrodes, and the first The scanning circuit 51 scans the voltage change of the strip electrode s4 of the first electrode pattern 22, so that the microprocessor 30 calculates the operating position of the touch according to the voltage change.

It can be seen from the above embodiments that the pressure sensitive touch device provided by the present invention has industrial utilization value, and thus the present invention has met the requirements of the patent. The above description is only for the preferred embodiment of the present invention, and those skilled in the art can make other various improvements according to the above description, but these changes still belong to the inventive spirit of the present invention and the following definitions. In the scope of patents.

100, 100a. . . Touch device

10. . . First substrate

11. . . Conductive layer bonding surface

12. . . Touch operation surface

13. . . Conductive layer

20. . . Second substrate

twenty one. . . Electrode pattern binding surface

22, 22a. . . First electrode pattern

221. . . Concave section

twenty three. . . Second electrode pattern

twenty four. . . Insulation

30. . . microprocessor

40. . . Drive voltage supply circuit

51. . . First scanning circuit

52. . . Second scanning circuit

60. . . Insulating spacer

7, 7a. . . Touch object

Cx, Cx1, Cx2. . . First capacitor

Cy, Cy1, Cy2. . . Second capacitor

D1. . . First predetermined distance

D2. . . Second predetermined distance

D3. . . Third predetermined distance

P1, P2, P3, P4, P5, P6. . . Operating position

V. . . Driving voltage

N1. . . Scanning sensing signal

N2. . . Scanning sensing signal

N3. . . Scanning sensing signal

N4. . . Scanning sensing signal

S1, s2, s3, s4, s5, s6. . . Strip electrode

S1', s2', s3', s4', s5', s6'. . . Strip electrode

S1", s2", s3", s4", s5", s6". . . Strip electrode

X. . . Second axial direction

Y. . . First axial direction

I. . . Contact direction

L. . . Direction of movement

Figure 1 is a block diagram showing the system of the first embodiment of the present invention;

Figure 2 is an exploded perspective view showing the main components of Figure 1;

3 is a view showing the relative positional relationship between the first electrode pattern and the second electrode pattern after the first substrate and the second substrate are bonded in FIG. 1;

Figure 4 is a cross-sectional view showing the section 4-4 of Figure 3;

Figure 5 is a plan view showing a second substrate of the first embodiment of the present invention;

Figure 6 is a plan view showing a second substrate of the second embodiment of the present invention;

7A and 7B are schematic views showing the operation of the touch device of the present invention when being operated by a user's finger;

Figure 8 shows the touch positions and corresponding capacitance values in the 7A and 7B drawings;

Figure 9 is a schematic view showing the operation of the touch device of the present invention with a touch object;

Figure 10 is a block diagram showing the system in which the touch object is touched by the touch object of Figure 9;

11A, 11B, and 11C are schematic diagrams showing the handwriting input of the touch device of the present invention by using a touch object;

Figure 12 is a system diagram showing the handwriting input operation of the touch object in conjunction with the 11A, 11B, and 11C images;

Figure 13 is a block diagram showing the system of the third embodiment of the present invention;

Figure 14 is a cross-sectional view showing a third embodiment of the present invention.

100. . . Touch device

10. . . First substrate

11. . . Conductive layer bonding surface

13. . . Conductive layer

20. . . Second substrate

twenty one. . . Electrode pattern binding surface

twenty two. . . First electrode pattern

twenty three. . . Second electrode pattern

twenty four. . . Insulation

30. . . microprocessor

40. . . Drive voltage supply circuit

51. . . First scanning circuit

52. . . Second scanning circuit

N1. . . Scanning sensing signal

N2. . . Scanning sensing signal

V. . . Driving voltage

S1, s2, s3, s4, s5, s6. . . Strip electrode

S1', s2', s3', s4', s5', s6'. . . Strip electrode

X. . . Second axial direction

Y. . . First axial direction

Claims (5)

A touch-sensitive touch device having a touch operation surface operable by a touch object, the device comprising: a conductive layer to which a driving voltage is applied; and a first electrode pattern positioned below the conductive layer And maintaining a first predetermined distance from the conductive layer; a second electrode pattern positioned below the first electrode pattern and maintaining a second predetermined distance from the conductive layer; The processor is electrically connected to the conductive layer, the first electrode pattern and the second electrode pattern; when the touch object touches the touch operation surface of the touch device, the conductive layer located at the operating position is affected by Pressing, the distance between the conductive layer and the first electrode pattern is changed, and the capacitive coupling between the conductive layer and the first electrode pattern is changed, and the conductive layer and the second electrode pattern are The distance is also changed, and the capacitive coupling between the conductive layer and the second electrode pattern is changed, so that the touch device operates in a capacitive touch position sensing mode, and the microprocessor according to the conductive layer and the first Capacitive coupling change between electrode patterns, and the guide a capacitive coupling change between the layer and the second electrode pattern, and calculating an operation position of the touch object on the touch operation surface; when the touch object touches the touch operation surface of the touch device or When the input operation is performed on the touch operation surface of the touch device, the conductive layer located at the operation position is pressed, and the conductive layer and the first electrode pattern are at least one phase Corresponding to contact with the touched position, the touch device is operated in the resistive touch position sensing mode, and the driving voltage is applied to the corresponding position of the first electrode pattern via the conductive layer, and the microprocessor is based on The voltage of the first electrode pattern changes, and the touch object is calculated to be at least one operating position on the touch operation surface. The pressure sensitive touch device of claim 1, wherein the first electrode pattern and the second electrode pattern respectively comprise a plurality of strip electrodes parallel to each other and spaced apart from each other. The pressure sensitive touch device of claim 2, wherein each strip electrode of the first electrode pattern is respectively connected to the microprocessor via a first scanning circuit, and the second electrode pattern is Each strip electrode is connected to the microprocessor via a second scan circuit. The pressure sensitive touch device of claim 2, wherein the microprocessor supplies the driving voltage to the conductive layer via a driving voltage supply circuit. The pressure sensitive touch device of claim 1, wherein the first electrode pattern is connected to the microprocessor via a first scanning circuit, and the second electrode pattern is connected via a second scanning circuit. To the microprocessor.