TWI570608B - Pressure sensing and touch sensitive panel, pressure sensing method, pressure sensing electronic device and control unit thereof - Google Patents

Description

Pressure sensing touch panel, pressure sensing method, pressure sensing electronic device and control unit thereof

The present invention relates to pressure sensing, and more particularly to the structure of a pressure sensing panel and its pressure sensing method.

The existing touch panel can detect the presence of an object by using a change in the physical quantity generated when the object approaches, such as a change in the capacitance value. However, most of the current methods can only detect the location of the touch. If the pressure exerted on the surface of the touch panel can be further detected, different signals can be generated according to the measured change of the pressure value, and the electronic device can be provided as a new function. Although the current capacitive touch panel can detect the increase in the amount of capacitance generated by the increase in the area of the object, the pressure value is estimated, but the correctness is not good and the misjudgment is easy to occur.

Therefore, there is a need for a pressure sensing panel and an electronic device to which the pressure sensing panel is applied, which can correctly detect the pressure value, and can also calculate the position and pressure of the pressure center of gravity applied by the external object.

In one embodiment, the present application provides a pressure sensing electronic device including: a pressure sensing touch panel and a control unit. The pressure sensing touch panel sequentially includes: a first electrode layer, a first insulating layer, a second electrode layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, The second electrode layer includes a plurality of second electrodes parallel to a second direction, and the plurality of first electrodes and the plurality of second electrodes are both connected to a control unit.

In one embodiment, the present application provides a pressure sensing touch panel, which includes a first electrode layer, a first insulating layer, a second electrode layer, a deformable insulating layer, and a third electrode layer. .

In one embodiment, the present invention provides a pressure sensing method for a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, and a first a second electrode layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of parallel to a second direction The second electrode. The pressure sensing method includes: driving a driving signal to the plurality of first electrodes in turn; detecting each of the plurality of second electrodes to obtain a plurality of sensing signals each time a driving signal is provided, to form a dimension Sensing information; after providing the driving signal to all the first electrodes, the plurality of 壹 dimensional sensing information forms a dimensional sensing information; and the obtained 贰 dimensional sensing information is compared with another reference that is not subjected to any pressure The pressure is sensed by the pressure sensing touch panel compared to the sensed image.

In one embodiment, the present invention provides a pressure sensing method for a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, and a first a second electrode layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of parallel to a second direction The second electrode. The pressure sensing method includes: providing a driving signal to All of the first electrodes, and obtaining a full-screen full-screen sensing information from the plurality of second electrodes; when the full-screen sensing information of the 壹 dimension and another reference 壹 dimension full screen sensing information without any pressure When the difference does not exceed a certain range, it can be considered that the pressure sensing touch panel is not under pressure.

In one embodiment, the present invention provides a control unit that is coupled to a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, and a second electrode. a layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of strips parallel to a second direction Two electrodes. The control unit includes a driving circuit, a sensing circuit, and a processor, wherein the processor is configured to: rotate the driving circuit to provide a driving signal to the plurality of first electrodes; and to sense the sense each time the driving signal is provided The measuring circuit detects the plurality of second electrodes to obtain a plurality of sensing signals to form a dimension sensing information; after providing the driving signal to all the first electrodes, the plurality of pupil sensing information forms a贰Differential sensing information; calculating the pressure of the pressure sensing touch panel by comparing the obtained 贰 dimensional sensing information with another reference sensing image that is not subjected to any pressure.

In one embodiment, the present invention provides a control unit that is coupled to a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, and a second electrode. a layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of strips parallel to a second direction Two electrodes. The control unit includes a driving circuit, a sensing circuit, and a processor for: causing the driving circuit to provide a driving signal to all of the first electrodes, and causing the sensing circuit to be from the plurality of second Electrode achieves one dimension full screen sensing Information; when the full-screen sensing information of the 壹 dimension is compared with another full-screen sensing information that is not subjected to any pressure, if the difference does not exceed a certain range, the pressure sensing touch panel can be identified Not under pressure.

In summary, one of the objects of the present invention is to form at least two capacitors using the three electrode layers of the provided pressure sensing panel, and to change one of the capacitive coupling amounts after being stressed. By detecting the amount of change in the electrical conductivity of the intermediate electrode layer before and after the force, the pressure-dependent capacitance change is obtained, and the pressure position, center of gravity and pressure of the pressure sensing panel can be accurately calculated. .

10‧‧‧Control unit

20‧‧‧ Pressure Sensing Touch Panel

21‧‧‧First electrode layer

22‧‧‧First insulation

23‧‧‧Second electrode layer

24‧‧‧deformable insulation

25‧‧‧ third electrode layer

30‧‧‧ display panel

41‧‧‧First electrode layer

42‧‧‧ dot spacer

43‧‧‧Second electrode layer

44‧‧‧deformable insulation

45‧‧‧ third electrode layer

50‧‧‧Control unit

100‧‧‧ Pressure sensing touch device

211‧‧‧ drive electrode or first electrode

231‧‧‧Sensor or second electrode

710~770‧‧‧Steps

The first figure is a schematic diagram of a pressure sensing touch device according to an embodiment of the invention.

The second figure is a schematic structural view of a pressure sensing touch panel according to an embodiment of the invention.

The third figure is a schematic perspective view of a pressure sensing touch panel according to an embodiment of the invention.

The fourth figure is a schematic diagram of a pressure sensing touch device according to an embodiment of the invention.

The fifth figure is a schematic diagram of the pressure sensing touch device shown in the fourth figure when subjected to pressure.

FIG. 6 is a schematic diagram of a pressure sensing touch device according to an embodiment of the invention.

FIG. 7 is a schematic flow chart of a pressure sensing method according to the present application.

The invention will be described in detail below with some embodiments. However, the invention may be applied to other embodiments in addition to the disclosed embodiments. The scope of the present invention is not limited by the embodiments, which are subject to the scope of the claims. And to provide clearer The description and the subject matter of the present invention can be understood by those skilled in the art, and the parts in the drawings are not drawn according to their relative sizes, and the ratio of some dimensions to other related scales is highlighted and exaggerated, and The relevant details are also not fully drawn for the sake of simplicity.

Please refer to the first figure, which is a schematic diagram of a pressure sensing touch device 100 according to an embodiment of the invention. Please refer to the second figure, which is a structural schematic diagram of a pressure sensing touch panel according to an embodiment of the invention. Please refer to the third figure, which is a schematic perspective view of a pressure sensing touch panel according to an embodiment of the invention. The first embodiment of the present invention can be as shown in the first to third figures.

As shown in the first figure, the pressure sensing touch device 100 mainly includes a control unit 10 and a pressure sensing touch panel 20 , and may further include a display panel 30 . The pressure sensing touch panel 20 is located in front of the display panel 30.

As shown in the second embodiment, the pressure sensing touch panel 20 mainly includes a first electrode layer 21, a first insulating layer 22, a second electrode layer 23, a deformable insulating layer 24, and a The third electrode layer 25.

As shown in the third figure, the first electrode layer 21 includes a plurality of driving electrodes or first electrodes 211 arranged in parallel, and each of the driving electrodes 211 is electrically connected to the control unit 10 for receiving the driving signals of the control unit 10 respectively. In this embodiment, each of the driving electrodes 211 is exemplified by a straight strip-shaped transparent conductive strip. In practice, the transparent conductive strip may be an electrode structure including a diamond shape, a rectangular shape, or the like. The first electrode layer 21 may be made of a transparent conductive film via a lithography process.

The first insulating layer 22 is located between the first electrode layer 21 and the second electrode layer 23 for electrically isolating the first electrode layer 21 and the second electrode layer 23. The first insulating layer 22 can be made of various transparent inorganic or organic insulating materials.

The second electrode layer 23 includes a plurality of parallel-arranged sensing electrodes or second electrodes 231. Each of the sensing electrodes 231 forms an intersection with each of the driving electrodes 211 and is electrically connected to the control unit 10 for receiving the driving signal when the driving electrode 211 receives the driving signal. A corresponding capacitive coupling amount is generated and is supplied to the control unit 10 for measuring its capacitive coupling amount. The second electrode layer 23 may be made of a transparent conductive film via a lithography process.

It should be noted that in this embodiment, the first electrode layer 21 is used as the driving electrode, and the second electrode layer 23 is used as the sensing electrode. However, the actual implementation is not limited thereto. The lower first electrode layer 21 is used as a sensing electrode, and the upper second electrode layer 23 is used as a driving electrode.

The deformable insulating layer 24 is formed above the second electrode layer 23 and is made of a deformable material, such as a transparent elastic material such as silicone or a compressible material. The deformable insulating layer 24 may be formed by coating or printing on the second electrode layer 23, or may be attached to the second electrode layer 24 after forming a monomer.

The third electrode layer 25 is located on the deformable insulating layer 24, and may comprise a transparent substrate of insulating material such as glass or plastic. The transparent substrate has appropriate elasticity and can be bent downward by a predetermined degree when the external object is pressed. A transparent conductive film is formed on the bottom surface of the transparent substrate. The transparent conductive film substantially completely covers the transparent substrate.

Please refer to the fourth figure, which is a schematic diagram of a pressure sensing touch device according to an embodiment of the invention. Please refer to the fifth figure, the schematic diagram of the pressure sensing touch device shown in the fourth figure when subjected to pressure.

In actual operation, the driving signal is applied to the first electrode layer 21 through the control unit 10, and the capacitive coupling amount C1 of each position of the first electrode layer 21 and the second electrode layer 23 is detected via the second electrode layer 23. Further, the third electrode layer 25 is grounded, and the second electrode layer 23 and the third electrode layer 25 are There is another capacitive coupling amount C2 between. When an external object such as a finger or a stylus is pressed against the pressure sensing touch panel 20, as shown in the fifth figure, the upper third electrode layer 25 and the deformable insulating layer 24 are deformed downward, resulting in the second The capacitive coupling amount of the electrode layer 23 and the third electrode layer 25 is changed to C2', which affects the signal size measured by the control unit 10 via the second electrode layer 23. The first electrode layer 21 is driven by the control unit 10, and the amount of change of all the capacitive coupling amounts is measured via all the sensing electrodes 231 of the second electrode layer 23, so that not only the touch position of the external object but also the control unit is known. 10 The size of the signal measured by the second electrode layer 23 can be used to estimate the magnitude of the pressure applied by the external object on the pressure sensing touch panel 20 via the control unit 10.

In some embodiments, since the range covered by the third electrode layer 25 covers the entire display panel 30, and the user holds the electronic device including the display panel 30, it may touch the first part of the hand or the body. Three electrode layer 25. Accordingly, the third electrode layer 25 is grounded through the human body without being connected to the ground potential provided by the electronic device.

Please refer to the sixth figure, which is a schematic diagram of a pressure sensing touch device according to an embodiment of the invention. In this embodiment, the pressure sensing touch panel 40 shown in FIG. 6 is substantially similar to the pressure sensing touch panel 20 of the first embodiment described above. As shown in the sixth figure, the difference is that the deformable insulating layer in the first embodiment is changed to the dot spacer layer 44 in the second embodiment. The dot spacer layer 44 is located between the second electrode layer 43 and the third electrode layer 45, and may be formed on one of the upper surface of the second electrode layer 43 or the lower surface of the third electrode layer 45. The dot spacer layer 44 has dots arranged at a plurality of dots, which may be made of a hard or elastic material.

In actual operation, the driving signal is applied to the first electrode layer 41 through the control unit 50, and the capacitive coupling amount C3 of each position of the first electrode layer 41 and the second electrode layer 43 is detected via the second electrode layer 43. Further, the third electrode layer 45 is grounded, and the second electrode layer 43 and the third electrode layer 45 are There is another capacitive coupling amount C4 between. When an external object such as a finger or a stylus is pressed against the pressure sensing touch panel 40, the upper third electrode layer 45 is deformed downward, resulting in a capacitive coupling amount between the second electrode layer 43 and the third electrode layer 45. The change affects the signal size measured by the control unit 50 via the second electrode layer 43. The first electrode layer 41 is driven by the control unit 50, and the amount of change of all the capacitive coupling amounts is measured via all the sensing electrodes of the second electrode layer 43 to not only know the touch position of the external object, but also according to the control unit 50. The magnitude of the pressure applied by the external object on the pressure sensing touch panel 40 can be estimated via the control unit 40 via the signal magnitude measured by the second electrode layer 43.

Please refer to the seventh figure, which is a schematic flowchart of a pressure sensing method according to the present application, which can be applied to the control unit 10 or the control unit 50. Embodiments in which the control unit 10 or 50 implements the pressure sensing method may utilize a processor to execute a program, that is, a method of using software. Either use hardware or mix hardware or software. In an embodiment, the control unit includes at least one driving circuit; at least one sensing circuit; and a processor. The processor can perform the following steps. The pressure sensing method includes the following steps: Step 710: Provide a driving signal to all of the plurality of first electrodes, and obtain one-dimensional full-screen sensing information from the plurality of second electrodes.

Step 720: Determine whether the difference between the full-screen sensing information of the UI dimension and another reference full-screen sensing information that is not subjected to any pressure exceeds a certain range. In an embodiment, whether the range is exceeded is calculated by calculating a difference between a sum of the full-screen sensing information of the UI dimension and a sum of the full-screen sensing information of the reference dimension, if the difference exceeds a predetermined value. , is beyond this range. In another embodiment, the calculation method of whether the range is exceeded is to calculate the maximum screen full-screen sensing information and the corresponding maximum-screen sensing information of the reference dimension. The difference is outside the range if the difference exceeds a predetermined value. In a further embodiment, the above two conditions can be judged at the same time, and as long as one condition is established, it is considered to be outside the range. When the range is exceeded, the flow proceeds to step 730; otherwise, the flow ends.

Step 730: Driving the driving signal to the plurality of first electrodes in turn.

Step 740: After detecting the plurality of second electrodes, each of the plurality of sensing electrodes is detected to obtain a plurality of sensing signals.

Step 750: After providing the driving signal to all the first electrodes, the plurality of dimensional sensing information forms a dimensional sensing information.

Step 760: Calculate the pressure of the pressure sensing touch panel by comparing the obtained 贰 dimensional sensing information with another reference sensing image that is not subjected to any pressure.

Step 770: Calculate the position of the center of gravity and the pressure value of each point applied to the pressure sensing touch panel.

In one embodiment, the present application provides a pressure sensing electronic device including: a pressure sensing touch panel and a control unit. The pressure sensing touch panel comprises: a first electrode layer, a first insulating layer, a second electrode layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises parallel to a plurality of first electrodes in a first direction, the second electrode layer comprising a plurality of second electrodes parallel to a second direction, the plurality of first electrodes and the plurality of second electrodes being connected to a control unit.

The electronic device includes a display panel under the pressure sensing touch panel, wherein the first electrode layer, the first insulating layer, the second electrode layer, the deformable insulating layer and the third electrode layer are all transparent.

In an embodiment, the control unit provides a driving signal to the plurality of strips in turn An electrode. Each time the driving signal is supplied, the plurality of sensing electrodes are detected by detecting the plurality of second electrodes. The plurality of sensing signals form a dimensional sensing information. After the driving signal is supplied to all the first electrodes, the plurality of dimensional sensing information forms a dimensional sensing information, or may be referred to as a sensing image. The control unit compares the obtained 贰 dimensional sensing information or the sensing image with another reference sensing image that is not subjected to any pressure, and the difference value of each sensing point of the two sensing images corresponds to The amount of change in the fourth graph C2 and the fifth graph C2'. According to the difference value of each sensing point, the control unit can calculate the position of the center of gravity of the pressure applied to the pressure sensing touch panel, and can also obtain the pressure value of each sensing point by using calculation or look-up table.

In another embodiment, the control unit may first provide a driving signal to all of the first electrodes, and obtain one 壹 dimensional sensing information from the plurality of second electrodes. When the 壹 dimension sensing information is compared with another reference 壹 dimension sensing information that is not subjected to any pressure, and the difference does not exceed a certain range, the pressure sensing touch panel may be deemed not to be under pressure. If the degree of difference exceeds the range, the step of obtaining the sensed image may be performed to calculate the position of the center of gravity and the pressure value of each point applied to the pressure sensing touch panel.

In one embodiment, the present application provides a pressure sensing touch panel, which includes a first electrode layer, a first insulating layer, a second electrode layer, a deformable insulating layer, and a third electrode layer. .

The first electrode layer includes a plurality of first electrodes parallel to a first direction, wherein the second electrode layer comprises a plurality of second electrodes parallel to a second direction, the plurality of first electrodes and the A plurality of second electrodes are connected to a control unit. Wherein the first direction is perpendicular to the second direction.

The first electrode layer, the first insulating layer, the second electrode layer, and the deformable layer Both the insulating layer and the third electrode layer are transparent.

The third electrode layer comprises a transparent substrate and a transparent conductive film, and the transparent conductive film is located on a surface of the third electrode layer facing the deformable insulating layer.

The deformable insulating layer includes a plurality of spacers arranged at intervals to separate the second electrode layer from the third electrode layer.

In one embodiment, the present invention provides a pressure sensing method for a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, and a first a second electrode layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of parallel to a second direction The second electrode. The pressure sensing method includes: driving a driving signal to the plurality of first electrodes in turn; detecting each of the plurality of second electrodes to obtain a plurality of sensing signals each time a driving signal is provided, to form a dimension Sensing information; after providing the driving signal to all the first electrodes, the plurality of 壹 dimensional sensing information forms a dimensional sensing information; and the obtained 贰 dimensional sensing information is compared with another reference that is not subjected to any pressure The pressure is sensed by the pressure sensing touch panel compared to the sensed image.

The pressure sensing method further includes calculating a position of a center of gravity of the pressure sensed by the touch panel, and obtaining a pressure value of each sensing point where the first electrode and the second electrode meet.

In one embodiment, the present invention provides a pressure sensing method for a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, and a first a second electrode layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising parallel a plurality of second electrodes in a second direction. The pressure sensing method includes: providing a driving signal to all of the first electrodes, and obtaining a full-screen full-screen sensing information from the plurality of second electrodes; when the full-screen sensing information and the other are not received The pressure sensing touch panel is not under pressure when the difference is less than a certain range of the full-screen sensing information of any pressure.

In one embodiment, the present invention provides a control unit that is coupled to a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, and a second electrode. a layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of strips parallel to a second direction Two electrodes. The control unit includes a driving circuit, a sensing circuit, and a processor, wherein the processor is configured to: rotate the driving circuit to provide a driving signal to the plurality of first electrodes; and to sense the sense each time the driving signal is provided The measuring circuit detects the plurality of second electrodes to obtain a plurality of sensing signals to form a dimension sensing information; after providing the driving signal to all the first electrodes, the plurality of pupil sensing information forms a贰Differential sensing information; calculating the pressure of the pressure sensing touch panel by comparing the obtained 贰 dimensional sensing information with another reference sensing image that is not subjected to any pressure.

In one embodiment, the present invention provides a control unit that is coupled to a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, and a second electrode. a layer, a deformable insulating layer and a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of strips parallel to a second direction Two electrodes. The control unit includes a driving circuit, a sensing circuit, and a processor for: causing the driving circuit to provide a driving signal to all of the An electrode, and causing the sensing circuit to obtain a full-screen full-screen sensing information from the plurality of second electrodes; and the full-screen sensing information when the full-screen sensing information is not subjected to any pressure When the difference between the information and the difference does not exceed a certain range, it can be considered that the pressure sensing touch panel is not under pressure.

20‧‧‧ Pressure Sensing Touch Panel

21‧‧‧First electrode layer

22‧‧‧First insulation

23‧‧‧Second electrode layer

24‧‧‧deformable insulation

25‧‧‧ third electrode layer

Claims (12)

A pressure sensing touch panel comprises: a first electrode layer; a first insulating layer; a second electrode layer; a deformable insulating layer; and a third electrode layer, wherein the third electrode layer is The second electrode layer is closer to an external object. The pressure sensing touch panel of claim 1, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, wherein the second electrode layer comprises a second direction parallel to a second direction The plurality of second electrodes, the plurality of first electrodes and the plurality of second electrodes are all connected to a control unit. The pressure sensing touch panel of claim 1, wherein the first electrode layer, the first insulating layer, the second electrode layer, the deformable insulating layer and the third electrode layer are all transparent. The pressure sensing touch panel of claim 1, wherein the third electrode layer comprises a transparent substrate and a transparent conductive film, and the transparent conductive film is located on the surface of the third electrode layer facing the deformable insulating layer. . The pressure sensing touch panel of claim 1, wherein the deformable insulating layer comprises a plurality of spacers arranged at intervals to separate the second electrode layer from the third electrode layer. An electronic device for pressure sensing, comprising: a control unit; and a pressure sensing touch panel, further comprising: a first electrode layer, a first insulating layer, a second electrode layer, a deformable insulating layer and a third electrode layer, wherein The first electrode layer includes a plurality of first electrodes parallel to a first direction, the second electrode layer includes a plurality of second electrodes parallel to a second direction, the third electrode layer being closer to the second electrode layer than the second electrode layer The external object, the plurality of first electrodes and the plurality of second electrodes are all connected to the control unit. A pressure sensing method is applied to a pressure sensing touch panel. The pressure sensing touch panel sequentially includes a first electrode layer, a first insulating layer, a second electrode layer, and a deformable insulating layer. a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprises a plurality of second electrodes parallel to a second direction, the third electrode layer The second electrode layer is closer to an external object, wherein the pressure sensing method comprises: providing a driving signal to the plurality of first electrodes in turn; detecting the plurality of second electrodes each time the driving signal is provided Obtaining a plurality of sensing signals to form a dimensional sensing information; after providing the driving signal to all the first electrodes, the plurality of dimensional sensing information forms a dimensional sensing information; and the obtained dimension The sensing information is compared to another reference sensing image that is not subjected to any pressure, and the pressure is sensed by the pressure sensing touch panel. For example, the pressure sensing method of claim 7 of the patent scope further includes calculating the pressure sensing touch panel. The position of the center of gravity of the received pressure, and the pressure value of each sensing point where the first electrode and the second electrode meet. A control unit is connected to a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, a second electrode layer, a deformable insulating layer, and a first a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of second electrodes parallel to a second direction, the third electrode layer The second electrode layer is closer to an external object, wherein the control unit comprises: a driving circuit; a sensing circuit; and a processor, wherein the processor is configured to: rotate the driving circuit to provide the driving signal to the plurality of first electrodes Each time the driving signal is supplied, the sensing circuit detects the plurality of second electrodes to obtain a plurality of sensing signals to form a dimensional sensing information; and provides a driving signal to all the first lines. After the electrode, the plurality of 壹 dimensional sensing information forms a 感 dimensional sensing information; and the obtained 贰 dimensional sensing information is compared with another reference sensing image that is not subjected to any pressure, and the calculation is performed. The force sensing touch panel of the pressure suffered. The control unit of claim 9, wherein the processor is further configured to calculate a position of a center of gravity of the pressure sensing the touch panel, and obtain a sense of the intersection of the first electrode and the second electrode. The pressure value of the measuring point. A pressure sensing method is applicable to a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, a second electrode layer, and a deformable insulating layer. And a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprises a plurality of second electrodes parallel to a second direction, the third electrode The layer is closer to an external object than the second electrode layer, wherein the pressure sensing method includes: providing a driving signal to all of the first electrodes, and obtaining one-dimensional full-screen sensing information from the plurality of second electrodes; When the full-screen sensing information of the 壹 dimension is compared with another full-screen sensing information of the reference 壹 dimension without any pressure, if the difference does not exceed a certain range, the pressure sensing touch panel may be determined not to be Under pressure. A control unit is connected to a pressure sensing touch panel. The pressure sensing touch panel includes a first electrode layer, a first insulating layer, a second electrode layer, a deformable insulating layer, and a first a third electrode layer, wherein the first electrode layer comprises a plurality of first electrodes parallel to a first direction, the second electrode layer comprising a plurality of second electrodes parallel to a second direction, the third electrode layer The second electrode layer is closer to an external object, wherein the control unit comprises: a driving circuit; a sensing circuit; and a processor, the processor is configured to: the driving circuit provides a driving signal to all the first electrodes, And let the sensing circuit Obtaining a full-screen full-screen sensing information from the plurality of second electrodes; and when the full-screen sensing information of the 壹 dimension is compared with another full-screen sensing information that is not subjected to any pressure, the difference is not When it exceeds a certain range, it can be considered that the pressure sensing touch panel is not under pressure.