Touchpad and electronic device

Abstract

The application provides a touchpad and an electronic device, the touchpad of the application adopts a reinforcing plate as a main body structure, a flexible touchpad is arranged on a third surface of the reinforcing plate to realize a touch function, the thickness is thinner than that of a current printed circuit board, and the overall thickness of the touchpad is reduced; the reinforcing plate plays a role of reinforcing the flexible touchpad, and the rigidity of the touchpad is improved; a groove is arranged on a fourth surface of the reinforcing plate to mount a vibration feedback device, so that part of the thickness of the vibration feedback device is accommodated in the groove, the thickness ratio of the vibration feedback device in the touchpad is reduced, and the overall thickness of the touchpad is further reduced; a control plate is also arranged on the fourth surface of the reinforcing plate and does not protrude from the vibration feedback device, and does not affect the overall thickness of the touchpad. Thus, the thickness of the touchpad of the application is reduced to 2.3-2.8 mm.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch control, in particular to a touch pad and an electronic device. BACKGROUND

[0002] The touch pad (TP) is one of the input devices applied to electronic devices such as notebook computers, which perceives the position and movement of a user's finger through a touch sensor and controls the movement of a pointer on a display interface; and which replaces physical buttons with a pressure sensing device and a vibration feedback device to realize function confirmation and menu calling operations.

[0003] In the related art, the vibration feedback device is usually implemented by a motor, specifically, the motor is fixed below a touch control plate of the touch pad, when the pressure value detected by the pressure sensing device reaches a set threshold, the touch control plate drives the vibrator inside the motor to vibrate, driving the touch pad to vibrate and providing vibration feedback to the user.

[0004] Since the motor has a vibrator inside, the structure is complex and the thickness is large, resulting in a large overall thickness of the touch pad, occupying a large installation space, which is not suitable for thin and light electronic devices. SUMMARY

[0005] The present application provides a touch pad and an electronic device to solve the technical problem of a large overall thickness of the existing touch pad, which occupies a large installation space.

[0006] The first aspect of the present application provides a touch pad, comprising:

[0007] A flexible touch plate is provided with a touch sensing electrode for outputting a touch sensing signal;

[0008] A reinforcing plate has opposite third and fourth surfaces, the third surface of the reinforcing plate is connected to the flexible touch plate for reinforcing the flexible touch plate, and the fourth surface of the reinforcing plate is provided with a groove;

[0009] A vibration feedback device is installed in the groove for generating vibration feedback, and the vibration feedback device responds to the pressure when the touch pad is pressed;

[0010] A control plate is fixed on the fourth surface of the reinforcing plate and is electrically connected to the flexible touch plate and the vibration feedback device, for determining the touch position of the touch pad according to the touch sensing signal, and driving the vibration feedback device to emit vibration feedback according to the pressing force received by the touch pad.

[0011] The touchpad of the embodiment of the present application adopts a reinforcing plate as a main structure, a flexible touch plate is arranged on the third surface of the reinforcing plate to realize a touch function, and the thickness of the touchpad is thinner than that of the existing printed circuit board, which is beneficial to reducing the overall thickness of the touchpad; the reinforcing plate plays a role of reinforcing the flexible touch plate, which is beneficial to improving the rigidity of the touchpad; a groove is arranged on the fourth surface of the reinforcing plate to mount a vibration feedback device, so that part of the thickness of the vibration feedback device is accommodated in the groove, thereby reducing the thickness ratio of the vibration feedback device in the touchpad and further reducing the overall thickness of the touchpad; and a control plate is further arranged on the fourth surface of the reinforcing plate and is electrically connected with the flexible touch plate and the vibration feedback device respectively, and is used to determine the touch position of a finger on the touchpad according to a touch sensing signal of the flexible touch plate and to drive the vibration feedback device to emit vibration feedback according to the pressure of the finger pressing the touchpad; and the control plate is arranged on the fourth surface of the reinforcing plate and does not protrude from the vibration feedback device, so it does not affect the overall thickness of the touchpad. Thus, the thickness of the touchpad of the present application is reduced to 2.3-2.8 mm, which is suitable for thin and light electronic devices. The touchpad of the present application has low cost, simple structure and enhanced rigidity.

[0012] Optionally, the touch sensing electrode and the control plate are electrically connected through a flexible connecting piece.

[0013] In this way, the flexible connecting piece can be bent to cross the reinforcing plate and realize the electrical connection between the control plate and the touch sensing electrode.

[0014] Optionally, the flexible touch plate comprises a touch main part and a bent connecting part, the touch sensing electrode is arranged on the touch main part, and the touch main part is bonded to the third surface of the reinforcing plate; the bent connecting part is bent relative to the touch main part to form the flexible connecting piece, and the bent connecting part electrically connects the touch sensing electrode and the control plate.

[0015] In this way, the bent connecting part is bent relative to the touch main part to form the flexible connecting piece, and at this time, the flexible connecting piece and the touch main part are an integral piece, which is simple to process and is beneficial to improving the production efficiency.

[0016] Optionally, the edge of the reinforcing plate is recessed towards the center to form a relief gap for avoiding the bent connecting part.

[0017] In this way, the bent connecting part is arranged in the relief gap, which is beneficial to improving the compactness of the structure of the touchpad, and the relief gap can also limit the bent connecting part to avoid the movement of the bent connecting part relative to the reinforcing plate and affect the stability of the electrical connection with the control plate. Optionally, a plurality of bent connecting parts are arranged, and the relief gaps are arranged correspondingly to the bent connecting parts, and each bent connecting part is electrically connected with the control plate via one relief gap.

[0018] Optionally, the depth of the avoiding gap ranges from 0.1 to 0.8 mm. In this way, the depth of the avoiding gap can be avoided to be too large to affect the structural strength of the reinforcing plate, and the depth of the avoiding gap can be avoided to be too small to avoid the bending connecting part.

[0019] Optionally, the thickness of the reinforcing plate ranges from 0.3 to 1.0 mm. In this way, the thickness of the reinforcing plate can be avoided to be too small to affect the overall structural strength of the touch plate, and the thickness of the reinforcing plate can be avoided to be too large to increase the overall thickness of the touch plate and occupy the space of the battery in the electronic device.

[0020] Optionally, the groove has a bottom wall arranged opposite to the third surface of the reinforcing plate, and the distance between the bottom wall and the third surface of the reinforcing plate ranges from 0.05 to 0.2 mm. In this way, the thickness space of the accommodated vibration feedback device can be avoided to be too small by arranging a too shallow groove, and the structural strength of the reinforcing plate can be avoided to be affected by arranging a too deep groove.

[0021] Optionally, the control plate is a printed circuit board.

[0022] Optionally, the control plate is a flexible circuit board, and the thickness of the flexible circuit board ranges from 0.08 to 0.2 mm.

[0023] Optionally, the control plate includes a flexible circuit board and a reinforcing sheet arranged in layers, the reinforcing sheet is arranged between the flexible circuit board and the fourth surface of the reinforcing plate, and the reinforcing sheet is used to reinforce the flexible circuit board; the flexible circuit board is electrically connected with the flexible touch plate and the vibration feedback device; and the thickness of the flexible circuit board ranges from 0.08 to 0.13 mm, so that the thickness of the flexible circuit board can be avoided to be too small to affect the structural stability; and the thickness of the reinforcing sheet ranges from 0.1 to 0.3 mm, so that the reinforcing effect on the flexible circuit board can be ensured, and the overall thickness of the touch plate can be avoided to be too large by arranging a too thick reinforcing sheet.

[0024] Optionally, the touch plate further includes a reinforcing member connected with the fourth surface of the reinforcing plate, and the reinforcing member and the control plate and the vibration feedback device do not interfere with each other in the fourth surface of the reinforcing plate. By arranging the reinforcing member, the structural strength and rigidity of the touch plate can be improved, and the deformation of the touch plate after being stressed can be reduced.

[0025] Optionally, the reinforcing member includes two reinforcing strips extending along the long edge direction of the reinforcing plate, and the two reinforcing strips are arranged at the edges of the opposite long edges of the reinforcing plate, and the control plate and the vibration feedback device are located between the two reinforcing strips.

[0026] Optionally, the touchpad further comprises an elastic support arranged on the fourth surface of the reinforcing plate, and the elastic support is provided with a threaded fixing hole for fixedly connecting with a supporting shell of the electronic device; the elastic support has a cantilever, and the cantilever is provided with a pressure sensor for deforming when the touchpad is pressed and outputting a corresponding pressure sensing signal; the control board is electrically connected with the pressure sensor, and is configured to receive the pressure sensing signal from the pressure sensor and determine the pressing force of the touchpad.

[0027] Optionally, the cantilever is provided with an elastic pad, and the elastic pad is bonded with the fourth surface of the reinforcing plate and is configured to elastically support the touchpad; the elastic pad is a silica gel pad, and the thickness of the silica gel pad ranges from 0.3 mm to 1.0 mm.

[0028] Optionally, the threaded fixing hole is arranged on the side of the elastic pad away from the vibration feedback device. In this way, the fixing screw can be sequentially screwed with the threaded fixing hole and the supporting shell on the upper part of the electronic device from bottom to top, so as to realize the installation of the touchpad; or the fixing screw can be sequentially screwed with the threaded fixing hole and the supporting shell on the lower part of the electronic device from top to bottom, so as to realize the installation of the touchpad, and the installation mode is more flexible.

[0029] Optionally, the threaded fixing hole is arranged on the side of the elastic pad close to the vibration feedback device.

[0030] Optionally, the touchpad further comprises a cover plate for providing an input interface for the touch or press of the finger; and the cover plate is bonded with the first surface of the flexible touchpad.

[0031] The second aspect of the present application provides an electronic device comprising a supporting shell,

[0032] The touchpad of the first aspect is installed on the supporting shell of the electronic device.

[0033] The electronic device of the second aspect of the present application also has the same advantages as the touchpad of the first aspect, because the electronic device of the second aspect of the present application comprises the touchpad of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0035] Figure 1This is a diagram showing the stacked structure of the touchpad provided in Embodiment 1 of this application;

[0036] Figure 2 This is a schematic diagram of the structure of the touchpad provided in an embodiment of this application;

[0037] Figure 3 An exploded view of the touchpad provided in the embodiments of this application;

[0038] Figure 4 A bottom view of a reinforcing plate for a touchpad provided in an embodiment of this application;

[0039] Figure 5 for Figure 4 AA section view in the middle;

[0040] Figure 6 A bottom view of the flexible touchpad provided in the embodiment of this application;

[0041] Figure 7 A bottom view of a reinforcing plate for a touchpad provided in another embodiment of this application;

[0042] Figure 8 This is a schematic diagram of the structure of the elastic support and pressure sensor provided in the embodiments of this application;

[0043] Figure 9 for Figure 8 Enlarged schematic diagram of region P in the middle;

[0044] Figure 10 This is a diagram showing the stacked structure of the touchpad provided in Embodiment 2 of this application;

[0045] Figure 11 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100: Flexible touch panel; 101: First surface; 102: Second surface; 110: Touch body part; 120: Bending connection part; 121: First connection terminal; 130: Flexible connector;

[0048] 200: Reinforcing plate; 201: Third surface; 202: Fourth surface; 210: Groove; 211: Bottom wall; 220: Clearance notch; 230: Second adhesive;

[0049] 300: Vibration feedback device;

[0050] 400: Control board; 401: Via; 410: Flexible circuit board; 420: Reinforcing piece; 431: First connector; 432: Second connector;

[0051] 500: stiffener; 510: fourth adhesive;

[0052] 600: elastic support; 610: cantilever; 611: elastic pad; 620: threaded fixing hole; 630: rectangular frame; 631: longitudinal beam; 632: transverse beam;

[0053] 710: pressure sensor; 711: third adhesive; 720: flat cable; 730: flat cable pin;

[0054] 800: cover plate; 810: first adhesive;

[0055] 900: electronic device; 910: support shell. DETAILED DESCRIPTION

[0056] A touch pad (TP) is one of input devices applied to electronic devices such as notebook computers, which perceives the position and movement of a user's finger through a touch sensor and controls the movement of a pointer on a display interface, and which realizes function confirmation and menu calling operations through a pressure sensing device and a vibration feedback device instead of physical keys. The vibration feedback device is usually realized by a motor, specifically, the motor is fixed below a touch control plate of the touch pad, when the pressure value detected by the pressure sensing device reaches a set threshold, the touch control plate drives the vibrator in the motor to vibrate, drives the touch pad to vibrate, and provides vibration feedback to the user. Since the motor has a vibrator inside, the structure is complex and the thickness is large, which leads to a large overall thickness of the touch pad, occupies a large installation space, and is not suitable for thin and light electronic devices.

[0057] Therefore, the present application provides a touch pad, which is provided with a flexible touch plate and a cover plate for adhesion to realize touch function and reduce the thickness of the touch pad. A reinforcing plate is arranged on the side of the flexible touch plate away from the cover plate to reinforce the flexible touch plate. A groove for mounting a vibration feedback device is arranged on the side of the reinforcing plate away from the flexible touch plate to accommodate part of the vibration feedback device, which is conducive to further reducing the thickness of the touch pad. A control plate is arranged on the reinforcing plate and electrically connected with the flexible touch plate and the vibration feedback device respectively to realize the touch function and the vibration feedback function of the touch pad.

[0058] Further, the touch pad of the present application is provided with a stiffener on the side of the reinforcing plate away from the flexible touch plate to improve the structural strength of the touch pad.

[0059] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0060] Embodiment one

[0061] Figure 1 A layer structure diagram of the touchpad provided in the embodiment one of the present application is shown in FIG. 1. Figure 2 A structure diagram of the touchpad provided in the embodiment of the present application is shown in FIG. 2. Figure 3 An exploded view of the touchpad provided in the embodiment of the present application is shown in FIG. 3.

[0062] In combination with Figures 1 to 3 The embodiment of the present application provides a touchpad, which comprises a cover plate 800, a flexible touchpad 100, a reinforcing plate 200, a vibration feedback device 300 and a control plate 400.

[0063] In the embodiment of the present application, the cover plate 800 plays a role of appearance and protection, and the cover plate 800 is a substantially planar rigid material sheet, which can be a glass, a PC sheet, a ceramic sheet, a polyester film (Mylar) or the like non-conductive rigid object. The top surface of the cover plate 800 can be smooth or have rough texture, so that the appearance of the touchpad conforms to the product aesthetic design. The cover plate 800 can be substantially rectangular in shape, and in some embodiments, the rectangular outer surface edges of the cover plate 800 can also be rounded. In another possible embodiment, the shape of the cover plate 800 can also be a circle, a triangle or the like basic shape for receiving the touch input of a user.

[0064] The top surface of the cover plate 800 is configured to contact one or more user objects, such as a finger, a stylus, when the touchpad is operated. Therefore, the user can provide input by clicking, sliding or pressing or otherwise applying force to the top surface of the cover plate 800 using the above one or more user objects. The top surface of the cover plate 800 referred to herein refers to the surface of the cover plate 800 facing away from the flexible touchpad 100.

[0065] Optionally, the thickness of the cover plate 800 ranges from 0.15 mm to 0.35 mm. It can be understood that in the embodiment of the present application, the thickness refers to the dimension along the Z-axis direction, and the Z-axis is perpendicular to the surface of the flexible touchpad 100.

[0066] The flexible touchpad 100 is arranged below the cover plate 800, and the flexible touchpad 100 is provided with a touch sensing electrode for sensing the touch position of a finger when the finger touches or presses the touchpad and outputting a corresponding touch sensing signal. The flexible touchpad 100 has a first surface 101 and a second surface 102 opposite to each other, and the first surface 101 is used to be pasted with the cover plate 800. In the embodiment of the present application, the first surface 101 of the flexible touchpad 100 is pasted with the cover plate 800 by means of the first adhesive 810. Figure 1 and Figure 3 The first surface 101 of the flexible touchpad 100 is pasted with the cover plate 800 by means of the first adhesive 810. The first adhesive 810 can be a liquid adhesive or a solid adhesive, for example, a double-sided adhesive film, a thermosetting adhesive film, a hot melt adhesive film, a thermosetting glue, a UV curing glue, etc.

[0067] The flexible touchpad 100 is flexible and foldable, which is convenient for being folded to be electrically connected with the control board 400 arranged in the interlayer. The flexible touchpad 100 is formed by arranging a touch sensing electrode on a flexible substrate. The flexible touchpad 100 can include a substrate and a touch sensing electrode arranged on the substrate. The material of the substrate includes but is not limited to polyethylene terephthalate (PET or PETP), polyethylene (PE), polyamide (PA), and polycarbonate (PC). The touch sensing electrode includes two electrode layers (Tx and Rx). The two electrode layers are arranged on the first surface and the second surface of the substrate, respectively, or the two electrode layers are arranged on the first surface of the substrate and an isolation layer is arranged between the two electrode layers. For example, the isolation layer is an insulating coating layer. The first surface of the substrate faces the cover plate 800, and the second surface of the substrate faces away from the cover plate 800. The two electrode layers are a driving electrode and a receiving electrode, respectively. The driving electrode and the receiving electrode are arranged in a row / column staggered manner. A touch controller on the control board 400 outputs a driving signal to the driving electrode and receives a touch sensing signal of the receiving electrode. When a finger touches the cover plate 800, the touch sensing signal received by the control board 400 changes, and the coordinate position of the touch position is obtained through the operation and processing of the touch controller on the control board 400.

[0068] In combination with Figure 1 and Figure 3 The reinforcing plate 200 of the embodiment of the present application is used to reinforce the flexible touchpad 100 and improve the overall structural strength of the touchpad. Optionally, the thickness D1 of the reinforcing plate 200 ranges from 0.3 mm to 1.0 mm. If the thickness of the reinforcing plate 200 is too small, the overall structural strength of the touchpad will be affected. If the reinforcing plate 200 is too thick, the overall thickness of the touchpad will increase, and the space of the battery in the electronic device will be occupied. The reinforcing plate 200 can be a stainless steel plate, a titanium gold plate, an aluminum alloy plate, etc.

[0069] The embodiment of the present application adopts the reinforcing plate 200 as the main carrier, the reinforcing plate 200 has opposite third surface 201 and fourth surface 202, the flexible touch plate 100 is arranged on the third surface 201 of the reinforcing plate 200, the reinforcing plate 200 is used to ensure the structural strength of the whole touch plate, and the touch plate has the advantage of small thickness.

[0070] The third surface 201 of the reinforcing plate 200 is pasted with the second surface 102 of the flexible touch plate 100, wherein the second surface is the side of the flexible touch plate facing the reinforcing plate. Figure 3 The third surface 201 of the reinforcing plate 200 is pasted with the second surface 102 of the flexible touch plate 100 through the second adhesive 230, and the second adhesive 230 can be liquid adhesive or solid adhesive, such as double-sided adhesive film, thermosetting adhesive film, hot melt adhesive film, thermosetting glue, UV curing glue, etc.

[0071] Figure 4 The bottom view of the reinforcing plate of the touch plate provided by the embodiment of the present application is shown in the figure; Figure 5 The A-A sectional view of the touch plate shown in the figure is shown in the figure. Figure 4 The A-A sectional view of the touch plate shown in the figure is shown in the figure. Figure 1 The fourth surface 202 of the reinforcing plate 200 is provided with a groove 210, for example, the groove 210 is etched or machined on the fourth surface 202 of the reinforcing plate 200. Figure 5 The groove 210 can accommodate a part of the thickness direction of the vibration feedback device 300, thereby reducing the proportion of the vibration feedback device 300 in the overall thickness of the touch plate, and further reducing the overall thickness of the touch plate.

[0072] Optionally, in combination with Figure 5 The groove 210 has a bottom wall 211 opposite to the third surface 201 of the reinforcing plate 200, and the distance D2 between the bottom wall 211 and the third surface 201 is in the range of 0.05-0.2mm, which can avoid the problem that the groove 210 is too shallow to accommodate the vibration feedback device 300 with too small thickness, and also avoid the problem that the groove 210 is too deep to affect the structural strength of the reinforcing plate 200.

[0073] In combination with Figure 4 In some embodiments, the groove 210 is located in the central region of the reinforcing plate 200, and thus the vibration feedback device 300 is installed in the central region of the reinforcing plate 200. It can be understood that when the reinforcing plate 200 is a rectangular plate, the groove 210 is located at the central position in the length direction (corresponding to the X-axis direction in the figure) and the central position in the width direction (corresponding to the Y-axis direction in the figure) of the reinforcing plate 200. In this way, it is beneficial to improve the vibration feedback of the vibration feedback device 300 in the whole plane of the touch plate, and improve the user experience.

[0074] Of course, this is not a limitation on the position of the groove 210 and the installation position of the vibration feedback device 300. The groove 210 can be offset from the central region of the reinforcing plate 200. For example, the groove 210 can be arranged at a left offset position in the length direction of the reinforcing plate 200, or the groove 210 can be arranged at a lower offset position in the width direction of the reinforcing plate 200, and the like.

[0075] The projected shape of the groove 210 on the fourth surface 202 of the reinforcing plate 200 can be a "convex" shape, but this is not a limitation. For example, the groove 210 can be circular, oval, polygonal, irregular, or the like. The embodiments of the present application do not limit the shape of the groove 210, as long as the shape of the groove 210 can adapt to the shape of the vibration feedback device 300, so that the vibration feedback device 300 can be installed in the groove 210.

[0076] The vibration feedback device 300 of the embodiments of the present application is installed in the groove 210. In response to the pressure when the touchpad is pressed, when the pressure when the touchpad is pressed is greater than a preset value, the vibration feedback device 300 vibrates under the action of the control plate 400. The vibration feedback device 300 can be a motor, such as a linear motor, a piezoelectric motor, a Z-axis motor, or the like. In some possible implementations, the vibration feedback device 300 is bonded in the groove 210, and the fixing method is stable and easy to assemble.

[0077] The embodiments of the present application set the groove 210 on the reinforcing plate 200, install the vibration feedback device 300 in the groove 210, and make the thickness of the part of the vibration feedback device 300 located in the groove 210 coincide with the thickness of the reinforcing plate 200, so as to reuse the thickness of the groove 210, thereby reducing the overall thickness of the touchpad, and facilitating the application of the touchpad to thin and light electronic devices.

[0078] The control plate 400 of the embodiments of the present application is fixed on the fourth surface 202 of the reinforcing plate 200. For example, the control plate 400 is bonded on the fourth surface 202 of the reinforcing plate 200, and the connection method is simple and reliable. The control plate 400 is electrically connected with the flexible touchpad 100 and the vibration feedback device 300, respectively, for determining the touch position of the finger on the touchpad according to the touch sensing signal, and for driving the vibration feedback device 300 to emit vibration feedback according to the pressing force received by the touchpad.

[0079] In some possible embodiments, the control board 400 is a printed circuit board (PCB), which has a certain degree of rigidity and good structural strength. The printed circuit board assembly (PCBA) is achieved by mounting components on the PCB using surface mount technology (SMT) or configuring electronic components using dual in-line packages (DIPs). The PCBA is used to implement the touch sensing function of the touchpad. The electronic components include, but are not limited to, touch controllers and electrical connectors. Specifically, the touch controller receives touch sensing signals from the touch sensing electrodes to determine the touch position of the finger on the touchpad, and receives pressure sensing signals from the pressure sensor 710 to determine the pressure applied by the finger and, based on the pressure applied, drives the vibration feedback device 300 to emit vibration feedback.

[0080] In some other possible embodiments, the control board 400 is a flexible printed circuit board (FPC) with a relatively thin thickness, which helps to further reduce the overall thickness of the touch panel. For example, the thickness of the flexible circuit board ranges from 0.08 to 0.2 mm, avoiding the impact on its structural strength due to excessively thin flexible circuit boards.

[0081] In some other possible embodiments, combined with Figure 3 The control board 400 includes a flexible circuit board 410 and a reinforcing sheet 420 stacked together. The flexible circuit board 410 is electrically connected to the flexible touch panel 100 and the vibration feedback device 300. The reinforcing sheet 420 is used to reinforce the strength of the flexible circuit board 410 and can be a stainless steel sheet, aluminum alloy sheet, etc. The reinforcing sheet 420 is bonded to the fourth surface 202 of the flexible circuit board 410 and the reinforcing plate 200, respectively, and is used to reinforce the flexible circuit board 410. The surface of the flexible circuit board 410 facing away from the reinforcing sheet 420 is provided with electronic components such as a touch controller and electrical connectors to achieve electrical connection with the flexible touch panel 100, vibration feedback device 300, etc. In this embodiment, the control board 400 reduces the overall thickness of the touch panel by using the flexible circuit board 410, while providing the reinforcing sheet 420 to reinforce the flexible circuit board 410, improving the structural stability of the flexible circuit board 410 and preventing damage to the flexible circuit board 410 under stress from affecting the function of the touch panel.

[0082] On this basis, since the flexible circuit board 410 is reinforced by the reinforcing sheet 420, the thickness of the flexible circuit board 410 can be relatively small, for example, the thickness of the flexible circuit board 410 ranges from 0.08 to 0.13 mm, and such a setting can avoid that the thickness of the flexible circuit board 410 is too small to affect the structural stability; the thickness of the reinforcing sheet 420 ranges from 0.1 to 0.3 mm, and such a setting can not only ensure the reinforcing effect on the flexible circuit board 410, but also avoid that the overall thickness of the touchpad is too large due to the too thick reinforcing sheet 420.

[0083] With reference to the foregoing description, the control board 400 is arranged on the reinforcing plate 200, and the vibration feedback device 300 is arranged in the recess 210 of the reinforcing plate 200. Figure 1 In the embodiment of the present application, the control board 400 is provided with a via hole 401 opposite to the recess 210, so that the vibration feedback device 300 passes through the via hole 401 and is installed in the recess 210. In this way, the thickness of the control board 400 coincides with part of the thickness of the vibration feedback device 300, further reducing the overall thickness of the touchpad.

[0084] Of course, this is not restrictive, for example, the control board 400 and the vibration feedback device 300 are staggered in the long direction of the reinforcing plate 200 (corresponding to the X-axis direction in the figure), for example, the vibration feedback device 300 is arranged at a right position in the long direction of the reinforcing plate 200, and the control board 400 is arranged at a left position in the long direction of the reinforcing plate 200.

[0085] The control board 400 of the embodiment of the present application receives the touch sensing signal sent by the touch sensing electrode of the flexible touchpad 100, determines the touch position of the finger on the touchpad through operation processing, and further combines the touch sensing signal received by the touch sensing electrode of the flexible touchpad 100 with the touch sensing signal received by the touch sensing electrode of the control board 400. Figure 1 Since the control board 400 and the flexible touchpad 100 are respectively arranged on the opposite surfaces of the reinforcing plate 200, an electrical connection structure is needed to cross the reinforcing plate 200 to realize the electrical connection between the control board 400 and the flexible touchpad 100. For example, the touchpad of the embodiment is provided with a flexible connecting piece 130 as the electrical connection structure, and the flexible connecting piece 130 can be bent to cross the reinforcing plate 200 and realize the electrical connection between the touch sensing electrodes on the control board 400 and the flexible touchpad 100.

[0086] It can be understood that the flexible connecting piece 130 shown in Figure 1 is L-shaped, which is only a schematic representation of the flexible connecting piece 130 and is not a limitation on the shape of the flexible connecting piece 130. In the actual structure, since the flexible connecting piece 130 usually has a bending radius, the bending position of the flexible connecting piece 130 is arc-shaped.

[0087] Since the flexible touchpad 100 is FPC, it has the characteristics of flexibility and bendability, therefore, part of the structure of the flexible touchpad 100 is bent to form a flexible connecting piece 130 to electrically connect the reinforcing plate 200 and the control plate 400, the connection method is simple, the processing is also simple, and the production efficiency is high.

[0088] Figure 6 The bottom view of the flexible touchpad of the touchpad provided by the embodiment of the application, combined with Figure 6 The flexible touchpad 100 of the embodiment of the application includes a touch main body part 110 and a bent connecting part 120, the touch main body part 110 has opposite first and second surfaces 101 and 102, the second surface 102 of the touch main body part 110 is bonded to the third surface 201 of the reinforcing plate 200; the first surface 101 of the touch main body part 110 is bonded to the cover plate 800; the touch main body part 110 includes a substrate and a touch sensing electrode disposed on the substrate, the touch sensing electrode of the touch main body part 110 is used to sense the touch position of the finger when the finger touches or presses the touchpad and output the corresponding touch sensing signal. The bent connecting part 120 is bent to form a flexible connecting piece 130 relative to the touch main body part 110, the bent connecting part 120 includes a substrate and a metal trace disposed on the substrate, the substrate of the bent connecting part 120 is made of the same material as the substrate of the touch main body part 110; the metal trace is used to realize the electrical connection of the touch sensing electrode and the control plate 400, so that the driving signal is transmitted to the touch sensing electrode, and the touch sensing signal is transmitted to the control plate 400.

[0089] For example, combined with Figure 6 and Figure 2 The control plate 400 is provided with a first connector 431, and the end of the bent connecting part 120 is provided with a first connecting terminal 121, the first connecting terminal 121 is electrically connected with the first connector 431, so as to realize the electrical connection of the touch main body part 110 and the control plate 400.

[0090] The bent connecting part 120 is bent to form a flexible connecting piece 130 relative to the touch main body part 110, at this time, the flexible connecting piece 130 and the touch main body part 110 are an integral part, the flexible connecting piece 130 is formed by part of the structure of the flexible touchpad 100; of course, the flexible connecting piece 130 can also exist independently of the flexible touchpad 100, for example, the flexible connecting piece 130 is a flexible flat cable which is flexible and bendable. Terminals for electrical connection are arranged on both sides of the flexible connecting piece 130, the terminals on both sides of the flexible connecting piece 130 are electrically connected with the touch sensing electrode and the control plate 400 respectively; of course, at this time, the flexible touchpad 100 is provided with an electrical connection seat to electrically connect with the terminals at the end of the flexible connecting piece 130.

[0091] Figure 7A bottom view of the reinforcing plate of the touchpad according to another embodiment of the present application.

[0092] In some embodiments, the touchpad is combined with Figure 7 The edge of the reinforcing plate 200 is recessed towards the center to form a recessed gap 220 to avoid the bending connection 120, and the bending connection 120 is electrically connected to the control plate 400 through the recessed gap 220. In this way, the bending connection 120 is located in the recessed gap 220, which helps to improve the compactness of the touchpad structure. The recessed gap 220 can also limit the movement of the bending connection 120 relative to the reinforcing plate 200, thereby affecting the stability of the electrical connection with the control plate 400.

[0093] The bending connection 120 can be provided with one, and the recessed gap 220 is provided with one. The touch sensing signals of all touch sensing electrodes are transmitted to the control plate 400 through the bending connection 120.

[0094] The bending connection 120 can be provided with multiple, for example, two, three, etc. For example, the touch main body 110 is divided into multiple regions, and the touch sensing electrodes in different regions are electrically connected to the control plate 400 through a bending connection 120. The recessed gap 220 is provided in correspondence with the bending connection 120. It can be understood that the recessed gap 220 is provided with multiple, and the number of recessed gaps 220 is the same as the number of bending connections 120. Each bending connection 120 is electrically connected to the control plate 400 through a recessed gap 220. In this way, the touch sensing electrodes can be divided into regions, and the touch sensing signals of the touch sensing electrodes in different regions are transmitted to the control plate 400 through different bending connections 120. This can improve the flexibility of the electrical connection between the flexible touchpad 100 and the control plate 400.

[0095] The positions of the multiple recessed gaps 220 on the edge of the reinforcing plate 200 can have multiple cases. When the reinforcing plate 200 is a rectangular plate, in some examples, the multiple recessed gaps 220 are all arranged on the same side edge of the reinforcing plate 200, for example, the multiple recessed gaps 220 are all arranged on the same long side edge of the reinforcing plate 200, and the multiple recessed gaps 220 are arranged along the long side edge. In other examples, at least one recessed gap 220 is arranged on a first side edge of the reinforcing plate 200, and other recessed gaps 220 are arranged on a second side edge of the reinforcing plate 200, as shown in Figure 7 The reinforcing plate 200 is provided with one recessed gap 220 on the wide side edge, and the reinforcing plate 200 is provided with two recessed gaps 220 on the long side edge. The position and number of the recessed gap 220 are not limited in the embodiments of the present application.

[0096] Continuing to refer to Figure 7The depth D3 of the clearance notch 220 is 0.1–0.8 mm. This is to avoid the clearance notch 220 being too deep, which would affect the structural strength of the reinforcing plate 200, and to avoid the clearance notch 220 being too shallow, which would prevent it from avoiding the bending connection 120. The width W of the clearance notch 220 is determined according to the specific width of the bending connection 120, and is not limited here.

[0097] In other embodiments, the reinforcing plate 200 does not have an avoidance notch 220, such as Figure 4 As shown, the bent connecting part 120 bends directly across the reinforcing plate 200 and is electrically connected to the control plate 400. With this configuration, the bending position of the bent connecting part 120 can be flexibly set according to the actual situation during the assembly process.

[0098] Continue to refer to Figures 1 to 3 The touchpad in this embodiment further includes a reinforcing member 500, which is connected to the fourth surface 202 of the reinforcing plate 200. For example, the reinforcing member 500 is bonded to the fourth surface 202 of the reinforcing plate 200 by a fourth adhesive 510. The fourth adhesive 510 can be a double-sided adhesive film, thermosetting adhesive film, hot melt adhesive film, thermosetting glue, UV-curing glue, etc. The touchpad in this embodiment improves the structural strength and rigidity of the touchpad by providing the reinforcing member 500, reducing the deformation of the touchpad under stress. The reinforcing member 500 can be a stainless steel plate, titanium plate, etc.

[0099] The reinforcing member 500 can be a strip structure, such as... Figure 3 As shown in the figure. This application embodiment does not limit the shape of the reinforcing member 500, as long as the reinforcing member 500, the control plate 400, the vibration feedback device 300, and the subsequent elastic support 600 do not interfere with each other within the fourth surface 202 of the reinforcing plate 200. "Does not interfere with each other" can be understood as the reinforcing member 500, the control plate 400, the vibration feedback device 300, and the elastic support 600 all being arranged within the fourth surface 202 of the reinforcing plate 200, but avoiding each other and not overlapping in the thickness direction of the reinforcing plate 200 (corresponding to the Z-axis direction in the figure).

[0100] For example, the reinforcing member 500 is a rectangular plate structure with openings for the avoidance control plate 400 and the vibration feedback device 300. This embodiment does not limit the shape of the reinforcing member 500; based on the avoidance control plate 400, the vibration feedback device 300, and the subsequent elastic support 600, the reinforcing member 500 can be of any shape. For another example, combined with… Figure 3The reinforcing member 500 includes two reinforcing strips extending along the length direction of the reinforcing plate 200 (corresponding to the X-axis direction in the figure), and the two reinforcing strips are arranged at the edges of the opposite long sides of the reinforcing plate 200, respectively. The control plate 400 and the vibration feedback device 300 are located between the two reinforcing strips. In this way, the reinforcing member 500 not only avoids the control plate 400 and the vibration feedback device 300, but also strengthens the edges of the reinforcing plate 200, thereby improving the structural strength of the reinforcing plate 200.

[0101] In the embodiment of the present application, the reinforcing member 500 is arranged on the fourth surface 202 of the reinforcing plate 200, thereby further improving the structural strength of the touch plate. Since the reinforcing member 500 and the control plate 400 are both attached to the fourth surface 202 of the reinforcing plate 200, the thickness of the touch plate along the Z-axis direction is not increased, so that the touch plate can still maintain a small thickness.

[0102] Continuing to refer to Figure 1 and Figure 2 , the touch plate of the embodiment of the present application further includes an elastic support 600 arranged on the fourth surface 202 of the reinforcing plate 200. The elastic support 600 has a cantilever 610, and the cantilever 610 is provided with a pressure sensor 710. When the touch plate is pressed by a finger, the cantilever 610 deforms, and the pressure sensor 710 outputs a corresponding pressure sensing signal. The control plate 400 is electrically connected to the pressure sensor 710, and is configured to receive the pressure sensing signal from the pressure sensor 710 and determine the pressing force of the touch plate.

[0103] The type of the pressure sensor 710 can be various, for example, a resistance strain gauge pressure sensor or a semiconductor strain gauge pressure sensor. Optionally, the pressure sensor 710 is a piezoresistive pressure sensor, which has a simple structure and high sensitivity. The piezoresistive pressure sensor can include four variable resistors, which are interconnected to form a Wheatstone bridge detection circuit. The resistance change is converted into a corresponding electrical signal (voltage or current) output through the detection circuit, thereby completing the process of converting pressure into an electrical signal.

[0104] The cantilever 610 has opposite fixed and free ends. When the elastic support 600 is fixed to the electronic device, the fixed end of the cantilever 610 is fixed relative to the touch plate, and the end of the cantilever 610 away from the elastic support 600 forms the free end of the cantilever 610. The free end of the cantilever 610 is provided with the pressure sensor 710.

[0105] Figure 8 A structural schematic diagram of the elastic support and the pressure sensor provided in the embodiment of the present application is shown in Figure 9 Fig. 4; Figure 8 Fig. 5 is an enlarged schematic diagram of the P region in Fig. 4; and Figure 9The pressure sensor 710 is bonded to the free end of the cantilever 610 by a third adhesive 711, which can be a liquid adhesive or a solid adhesive, such as a double-sided adhesive film, a thermosetting adhesive film, a hot melt adhesive film, a thermosetting glue, a UV curing glue, etc. When the touchpad is stressed, the cantilever 610 can be elastically deformed, driving the pressure sensor 710 to elastically deform together, so that the pressure sensor 710 can detect the pressure received by the touchpad.

[0106] In combination Figure 8 The elastic support 600 has four cantilevers 610, which are arranged at the four corner regions of the rectangular reinforcing plate 200, and each cantilever 610 is provided with a pressure sensor 710. Such an arrangement can make the elastic support 600 uniformly support the reinforcing plate 200, and also facilitate the calculation of the pressure value.

[0107] It should be noted that the pressure sensor 710 is electrically connected to the control board 400 by a wire 720, wherein the wire 720 is arranged in an S shape, which can flexibly adjust the bonding position of the pressure sensor 710, and is beneficial to improve the deformation of the pressure sensor 710 and the accuracy of the bonding position.

[0108] For example, the wire 720 is electrically connected to the control board 400 by a wire pin 730. The wire pin 730 is provided with a second connection terminal, and the control board 400 is provided with a second connector 432, which is electrically connected to the second connection terminal to realize the electrical connection between the wire 720 and the control board 400.

[0109] In this way, the two wires 720 of the two pressure sensors 710 can be electrically connected to the control board by one wire pin 730 to simplify the electrical connection structure. Figure 8 In the structure shown, due to the arrangement of the long strip-shaped reinforcing member 500, the two wires 720 of the two pressure sensors 710 on the left are electrically connected to the control board 400 by one wire pin 730, and the two wires 720 of the two pressure sensors 710 on the right are electrically connected to the control board 400 by one wire pin 730. However, this is not limiting, for example, when the reinforcing member 500 does not interfere with each other, the two pressure sensors 710 on the top and the two pressure sensors 710 on the bottom are respectively electrically connected to the control board 400 by one wire pin 730. Of course, the wire 720 of each pressure sensor 710 can be connected to one wire pin 730 respectively.

[0110] In combination Figure 8 and Figure 9The elastic support 600 of this embodiment includes a rectangular frame 630 and cantilever 610s connected within the rectangular frame 630. The rectangular frame 630 includes two longitudinal beams 631 and two transverse beams 632. The two longitudinal beams 631 extend along the Y-axis, and the two transverse beams 632 extend along the X-axis. The two longitudinal beams 631, the two transverse beams 632, and the four cantilever 610s are integrally formed. For example, two cantilever 610s are disposed at both ends of one longitudinal beam 631, and the other two cantilever 610s are disposed at both ends of the other longitudinal beam 631. The four cantilever 610s are symmetrical about a first centerline of the rectangular frame 630, which extends along the Y-axis, and the rectangular frame 630 is symmetrical about the first centerline.

[0111] It is understood that the shape of the flexible support 600 is not limited to a rectangle; for example, the flexible support 600 can also be I-shaped, elongated, etc. One flexible support 600 can be installed, such as... Figure 8 As shown; multiple elastic supports 600 can also be provided. The elastic support 600 is a long strip extending along the Y-axis direction. Two cantilever 610s are provided at both ends of the long strip elastic support 600. One long strip elastic support 600 is provided at each end of the reinforcing plate 200 along the X-axis direction.

[0112] Combination Figure 8 and Figure 9 Elastic pads 611 are provided at the free ends of the four cantilever arms 610. The elastic pads 611 are bonded to the fourth surface 202 of the reinforcing plate 200 to elastically support the touch panel. The elastic pads 611 can be elastic support pads, for example, the elastic pads 611 are silicone pads with a thickness ranging from 0.3 to 1.0 mm.

[0113] When the touchpad is pressed, the pressure is transmitted to the cantilever 610 through the elastic pad 611 at the free end of the cantilever 610. The cantilever 610 undergoes elastic deformation, causing the pressure sensor 710 attached to the cantilever 610 to deform and detect the pressure. The control board 400 processes the data to determine the pressure value. When the pressure value reaches a certain threshold, it is reported to the electronic device system to enable the left and right mouse button functions, such as function confirmation and menu access. After the pressure is released, the cantilever 610 returns to its initial unloaded state under the action of the elastic pad 611.

[0114] In addition, the elastic support 600 may have six cantilever 610, of which four cantilever 610 are respectively arranged in the four corner areas of the rectangular reinforcing plate 200, and the other two cantilever 610 are respectively arranged in the center of the long side of the rectangular reinforcing plate 200.

[0115] When the touchpad is mounted on the electronic device, the elastic support 600 is fixed on the supporting shell of the electronic device, and each cantilever 610 is suspended relative to the electronic device.

[0116] In combination Figure 8 and Figure 9 In some embodiments, the elastic support 600 is provided with threaded fixing holes 620 for fixed connection with the supporting shell of the electronic device. Specifically, the elastic support 600 is provided with a fixing portion, and the threaded fixing holes 620 are formed in the fixing portion. In order to ensure the elastic force of the elastic support 600, the elastic support 600 is usually in a sheet shape, for example, a stainless steel sheet. The fixing portion can be a boss provided on the elastic support 600, or a mounting through hole is provided on the elastic support 600, and a nut is riveted or welded in the mounting through hole to form the fixing portion. In this way, the length of the threads of the threaded fixing holes 620 can be increased, and the stability and reliability of the mounting of the touchpad can be improved.

[0117] The threaded fixing holes 620 are arranged on the rectangular frame 630 of the elastic support 600, and the number and arrangement of the threaded fixing holes 620 are not limited in the embodiments of the present application. For example, three threaded fixing holes 620 are arranged at intervals along the horizontal beam 632 of the rectangular frame 630, and three threaded fixing holes 620 are arranged at intervals along the vertical beam 631 of the rectangular frame 630. Alternatively, one threaded fixing hole 620 is arranged on the opposite part of the vertical beam 631 of the cantilever 610, which is beneficial to the fixation of the fixed end of the cantilever 610 and the deformation of the free end of the cantilever 610, and is beneficial to improving the stability of the mounting of the touchpad on the electronic device.

[0118] In combination Figure 1 The threaded fixing holes 620 are arranged on the side of the elastic pad 611 close to the vibration feedback device 300. At this time, the fixing screws can be sequentially screwed from below (corresponding to the negative direction of the Z axis in the figure) to the threaded fixing holes 620 and the supporting shell on the upper part of the electronic device, thereby realizing the mounting of the touchpad.

[0119] The process flow of the assembly of the touchpad according to the embodiments of the present application includes: bonding the vibration feedback device 300 in the groove 210 of the reinforcing plate 200, and bonding the flexible touchpad 100 to the third surface 201 of the reinforcing plate 200, bending the flexible touchpad 100 to form the bent connection portion 120; then, pasting the cover plate 800 on the surface of the flexible touchpad 100 through the first adhesive 810; bonding the control plate 400 to the fourth surface 202 of the reinforcing plate 200; bonding the pressure sensor 710 to the elastic support 600, and bonding the elastic support 600 to the fourth surface 202 of the reinforcing plate 200 through the elastic pad 611; and finally, assembling the electrical connection of the bent connection portion 120 and the pressure sensor 710 with the control plate 400, and auxiliary film materials, etc.

[0120] The thickness of the touchpad of the embodiment of the present application is 2.3-2.8mm, which is less than the thickness of 3mm of the touchpad in the related art, reduces the space occupied in the electronic device during installation, and can be applied to thin electronic devices, thereby improving the application range. The thickness of the touchpad is the maximum dimension of the touchpad along the Z-axis direction. Figure 1 The bottom surface of the vibration feedback device 300 can be flush with the elastic support 600, and the thickness of the touchpad is the dimension of the top surface of the cover plate 800 and the bottom surface of the elastic support 600 along the Z-axis direction.

[0121] Embodiment Two

[0122] Figure 10 The embodiment of the present application provides a touchpad with a layer structure. Figure 10 The touchpad provided by the embodiment of the present application is an alternative scheme of the touchpad in the embodiment one, the position of the threaded fixing hole 620 in the embodiment is different from that in the embodiment one, and the other structures, functions and effects can be referred to the embodiment one, which will not be described here.

[0123] The threaded fixing hole 620 in the embodiment is arranged on the side of the elastic pad 611 away from the vibration feedback device 300, at this time, the fixing screw can be sequentially screwed with the threaded fixing hole 620 and the support shell on the upper part of the electronic device from below (corresponding to the negative direction of the Z-axis in the figure) to the upper part, thereby achieving the installation of the touchpad; or the fixing screw can be sequentially screwed with the threaded fixing hole 620 and the support shell on the lower part of the electronic device from the upper part (corresponding to the positive direction of the Z-axis in the figure) to the lower part, thereby achieving the installation of the touchpad, and the installation mode is more flexible.

[0124] Continuing to refer to Figure 10 The bottom surface of the vibration feedback device 300 can be convex to the elastic support 600, at this time, the thickness of the touchpad is the dimension of the top surface of the cover plate 800 and the bottom surface of the vibration feedback device 300 along the Z-axis direction.

[0125] Embodiment Three

[0126] Figure 11 The embodiment of the present application provides a structure schematic diagram of an electronic device.

[0127] In combination Figure 11 The embodiment of the present application provides an electronic device 900, which comprises a support shell 910 and the touchpad in the embodiment one, and the elastic support of the touchpad is installed on the support shell 910. The structure, function and effect of the touchpad in the embodiment are the same as those in the above-mentioned embodiment one and embodiment two, and can be referred to the above-mentioned embodiment one and embodiment two, which will not be described here.

[0128] The technical solutions of the embodiments of the present application can be applied to various electronic devices, for example, smart phones, notebook computers, tablet computers, notebook computer keyboards, leather keyboard, game devices and other portable or mobile computing devices, and other electronic devices such as electronic databases, automobiles, and Automated Teller Machines (ATMs). However, the embodiments of the present application are not limited thereto.

[0129] The electronic device of the embodiments of the present application further comprises a host electrically connected with the touch controller on the control board. On the one hand, the touch controller provides a driving signal to the touch sensor to drive the touch sensing electrode to perform touch detection according to the control signal of the host; on the other hand, the touch controller is configured to receive the touch sensing signal and the pressure value output by the touch sensing electrode and the pressure sensor when the finger is pressed on the touchpad, and determine the finger position information and the vibration feedback signal based on the touch sensing signal and the pressure value.

[0130] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A touchpad, comprising: The application relates to a touch control plate, which comprises the following parts: a flexible touch plate with opposite first and second surfaces, wherein the flexible touch plate is provided with touch sensing electrodes for outputting touch sensing signals, and the second surface is the surface of the flexible touch plate facing the reinforcing plate; the reinforcing plate with opposite third and fourth surfaces, wherein the third surface of the reinforcing plate is pasted to the second surface of the flexible touch plate for reinforcing the flexible touch plate, the fourth surface of the reinforcing plate is provided with a groove with a bottom wall opposite to the third surface of the reinforcing plate, and the distance between the bottom wall and the third surface of the reinforcing plate ranges from 0.05 mm to 0.2 mm; a vibration feedback device installed in the groove for generating vibration feedback, wherein the vibration feedback device is responsive to the pressure when the touch plate is pressed; and a control plate comprising a flexible circuit board and a reinforcing sheet, wherein the reinforcing sheet is arranged between the flexible circuit board and the fourth surface of the reinforcing plate, and is fixed to the fourth surface of the reinforcing plate, the reinforcing sheet is used for reinforcing the flexible circuit board, the flexible circuit board is electrically connected to the flexible touch plate and the vibration feedback device, and is used for determining the touch position of the touch plate according to the touch sensing signals and driving the vibration feedback device to emit vibration feedback according to the pressing force of the touch plate, the thickness of the flexible circuit board ranges from 0.08 mm to 0.13 mm, and the thickness of the reinforcing sheet ranges from 0.1 mm to 0.3 mm.

2. The touchpad of claim 1, wherein, The flexible touch plate comprises a touch main body part and a bending connecting part, the touch sensing electrodes are arranged on the touch main body part, and the touch main body part is pasted to the third surface of the reinforcing plate; the bending connecting part is bent relative to the touch main body part to form the flexible connecting part, and the bending connecting part electrically connects the touch sensing electrodes and the control plate.

3. The touchpad of claim 2, wherein, The edge of the reinforcing plate is recessed towards the center to form an avoiding notch for avoiding the bending connecting part.

4. The touchpad of claim 3, wherein, The bending connecting part is provided with a plurality of avoiding notches, and each bending connecting part is electrically connected to the control plate via one avoiding notch.

5. The touchpad of claim 4, wherein, The depth of the avoiding notch ranges from 0.1 mm to 0.8 mm.

6. The touchpad of claim 4, wherein, The thickness of the reinforcing plate ranges from 0.3 mm to 1.0 mm.

7. The touchpad according to any one of claims 1-6, wherein, The touch control plate further comprises a reinforcing member, the reinforcing member is connected to the fourth surface of the reinforcing plate, and the reinforcing member and the control plate and the vibration feedback device do not interfere with each other in the fourth surface of the reinforcing plate.

8. The touchpad according to any one of claims 1-6, wherein, The reinforcing member comprises two reinforcing strips extending along the long side direction of the reinforcing plate, and the two reinforcing strips are arranged at the edges of the opposite long sides of the reinforcing plate, and the control plate and the vibration feedback device are located between the two reinforcing strips.

9. The touchpad of claim 8, wherein, ​ 10. The touchpad according to any one of claims 1-6, wherein, The touchpad further comprises an elastic support arranged on the fourth surface of the reinforcing plate, the elastic support is provided with a threaded fixing hole for fixed connection with a supporting shell of an electronic device; the elastic support has a cantilever, the cantilever is provided with a pressure sensor for deformation when the touchpad is pressed and output of a corresponding pressure sensing signal; The control board is electrically connected with the pressure sensor for receiving the pressure sensing signal from the pressure sensor and determining the pressing force of the touchpad.

11. The touchpad of claim 10, wherein, The cantilever is provided with an elastic pad, the elastic pad is bonded with the fourth surface of the reinforcing plate for elastic support of the touchpad; the elastic pad is a silica gel pad, the thickness of the silica gel pad ranges from 0.3 to 1.0 mm.

12. The touchpad of claim 11, wherein, The threaded fixing hole is arranged on the side of the elastic pad away from the vibration feedback device; or, The threaded fixing hole is arranged on the side of the elastic pad close to the vibration feedback device.

13. The touchpad according to any one of claims 1-6, wherein, The touchpad further comprises a cover plate for providing an input interface for the touch or press of a finger; the cover plate is pasted with the first surface of the flexible touchpad.

14. An electronic device, comprising: Comprise: a supporting shell, The touchpad of any one of claims 1-13 is mounted on the supporting shell.

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