TWI902056B - Touchpad - Google Patents

Abstract

The invention provides a touchpad, which includes a substrate, an elastic bracket and an actuating device. The substrate includes a first surface and a second surface, and the first surface and the second surface are opposite to each other. The elastic bracket is arranged closed to one side of the second surface. The actuating device includes a first actuating component and a second actuating component. The first actuating component is fixed on the second surface or on the side of the elastic bracket facing the substrate. The second actuating component is fixed to the second surface or the side of the elastic bracket facing the substrate relative to the first actuating component. The first actuating component and the second actuating component generate relative movement through the magnetic field force to drive the substrate and the elastic bracket to vibrate relative to each other. The first actuation component includes a coil, which is spirally wound into a hollow cylinder. The extension direction of the hollow cylinder is parallel to the substrate and the elastic bracket.

Description

touchpad

This invention relates to a touch input device, and more particularly to a touchpad.

A touchpad is an input device used to control the cursor on computers, tablets, and other electronic devices. Touchpads use touch sensors to detect the position and movement of the user's fingers and control the cursor movement on the display. Pressure touchpads replace physical buttons with haptic feedback and pressure sensors, solving the problem of traditional touchpads only allowing for partial pressing.

To provide a better user experience, pressure-sensitive touchpads are equipped with haptic feedback devices to simulate the feel of physical vibration feedback. Common haptic feedback devices include, for example, piezoelectric ceramics and linear motors. Piezoelectric ceramic haptic feedback devices typically involve multiple piezoelectric ceramics arranged in a staggered pattern on the device's casing. When a piezoelectric ceramic is pressed and deforms to sense pressure, the control unit outputs a pulse signal to it, causing an electric field to be generated in the polarization direction of the piezoelectric ceramic, resulting in mechanical deformation and thus vibration feedback. However, the disadvantages of piezoelectric ceramics are that the assembly of multiple piezoelectric ceramics can easily cause the fulcrum of the piezoelectric ceramics to be non-coplanar, resulting in tolerances. This can cause inconsistent pressing and vibration feedback. Furthermore, the vibration direction provided by piezoelectric ceramics is limited to oscillating back and forth in a direction perpendicular to the touch panel.

Regarding linear motor-type haptic feedback devices, the linear motor is directly fixed to the bottom of the touch panel. A specific drive signal drives the internal oscillator of the linear motor to swing back and forth in a direction perpendicular to the touch panel, thereby causing the entire motor to vibrate, which in turn causes the touch panel to vibrate, achieving vibration feedback. The disadvantages of linear motors are their complex internal structure, difficult manufacturing process, resulting in high production costs. Furthermore, linear motors are relatively thick and bulky, taking up battery space in electronic devices and making them unsuitable for some thin and light electronic devices.

To adapt to thinner electronic devices and provide more direct vibration feedback, a touch module with magnet and magnetic coil to generate, as described in US patent US11619997, is used. Taking VIBRATION as an example, haptic feedback devices have been developed by etching sensing lines onto a circuit board to form a sensing coil circuit. The circuit board is then attached to the surface of the touch circuit board, and vibration feedback is generated through the magnetic field force of the magnetic material. Although this design can make the module thinner, if you want to increase the inductance and design a multi-layer circuit, it will require the manufacturing process of multi-layer circuit boards, which is relatively expensive and prone to yield problems. Therefore, how to improve the cost of haptic feedback devices and provide more intuitive touch feedback has become a problem that needs to be solved.

One of the purposes of this invention is to provide an improved touchpad.

Other objects and advantages of the present invention can be further understood from the technical features disclosed herein.

To achieve one or more of the above objectives or other objectives, the present invention provides a touch panel, including a substrate, an elastic support, and an actuation device. The substrate has a first surface and a second surface, which are disposed opposite to each other. The elastic support is disposed on one side of the second surface. The actuation device includes a first actuation component and a second actuation component. The first actuation component is fixed to the second surface or the side of the elastic support facing the substrate, and the second actuation component is fixed relative to the first actuation component to the second surface or the side of the elastic support facing the substrate. The first actuation component and the second actuation component move relative to each other through a magnetic field force to drive the substrate and the elastic support to vibrate relative to each other. The first actuation component includes a coil, which is spirally wound into a hollow cylinder, and the hollow cylinder extends parallel to the substrate and the elastic support.

In one embodiment of the present invention, the coil described above includes copper wire.

In one embodiment of the present invention, the diameter of the coil is 0.05mm-0.1mm and the number of coil turns is 265-285.

In one embodiment of the present invention, the first actuation component further includes a magnetic core disposed within a hollow cylinder, and a coil substantially covering the surface of the magnetic core.

In one embodiment of the present invention, the magnetic core described above includes a plastic part or an iron part.

In one embodiment of the present invention, the second actuation component includes a first magnetic component and a second magnetic component, wherein the polarity directions of the first magnetic component and the second magnetic component are parallel to the extension direction of the hollow cylinder, and the polarity directions of the first magnetic component and the second magnetic component are opposite.

In one embodiment of the present invention, the coil further includes a first end and a second end, the first end and the second end being disposed opposite to each other, wherein a first magnetic element is disposed near the first end and the second magnetic element is disposed near the second end.

In one embodiment of the present invention, the aforementioned elastic support includes a support region and a load-bearing region, wherein the support region has a first thickness and the load-bearing region has a second thickness, the first thickness being greater than the second thickness.

In one embodiment of the present invention, when the first actuating component is fixed to the second surface, the first actuating component is located near the center of the load-bearing area, and the first magnetic component and the second magnetic component are fixed to the load-bearing area and are respectively near the first end and the second end.

In one embodiment of the present invention, the central location of the aforementioned load-bearing area further includes a receiving space, and the first actuating component is disposed at the corresponding receiving space.

In one embodiment of the present invention, when the first actuating component is fixed to the side of the elastic bracket facing the substrate, the first actuating component is disposed at the center of the load-bearing area, and the first magnetic component and the second magnetic component are fixed to the second surface and respectively close to the first end and the second end.

To make the above and other objects, features and advantages of the present invention more apparent, preferred embodiments are described below in detail with reference to the accompanying drawings.

Figure 1 is an exploded view of the touch panel 10 of the first embodiment of the present invention. Figure 2 is a cross-sectional view of the touch panel 10 of the first embodiment of the present invention. Figures 3A to 3D are schematic diagrams of the relative movement of the first actuating component 131 and the second actuating component 132 in the first embodiment of the present invention. Figure 4 is an exploded view of the touch panel 10' of the second embodiment of the present invention. Figures 5A to 5D are schematic diagrams of the relative movement of the first actuating component 131' and the second actuating component 132' in the second embodiment of the present invention. Figure 6 is a simplified side view of other embodiments of the present invention.

Referring to Figures 1 and 6, the touchpad 10 of this invention includes a substrate 11, a flexible support 12, and an actuation device 13. The substrate 11 has a first surface 111 and a second surface 112, which are disposed opposite to each other. The flexible support 12 is disposed on one side of the second surface 112. The actuation device 13 includes a first actuation component 131 and a second actuation component 132. The first actuation component 131 can be fixed to the second surface 112 or fixed to the side of the flexible support 12 facing the substrate 11. As shown in Figure 1, when the first actuation component 131 is fixed to the second surface 112, the second actuation component is fixed to the side of the flexible support 12 facing the substrate 11. As shown in Figure 6, when the first actuating component 131 is fixed to the side of the elastic bracket 12 facing the substrate 11, the second actuating component 132 is fixed to the second side 112. The first actuating component 131 and the second actuating component 132 move relative to each other through magnetic force, thereby causing the substrate 11 and the elastic bracket 12 to vibrate relative to each other. The first actuating component 131 includes a coil 1311, which is spirally wound into a hollow cylinder 13111. The hollow cylinder 13111 extends in a direction D parallel to the substrate 11 and the elastic bracket 12. The following provides a detailed description of each component of the touchpad 10 of the present invention.

Please refer to FIG. 1 again. The appearance of the substrate 11 is a rectangular plate. The substrate 11 may be, but is not limited to, a printed circuit board, for example. Touch sensing electrodes are provided on the first surface 111. The touch sensing electrodes are used to sense the touch position of the finger and output a corresponding touch sensing signal when the finger touches or presses the touch panel. A plurality of electronic components (not shown) are mounted on the second surface 112 .

Please further refer to FIG. 1 and FIG. 2 . The appearance of the elastic bracket 12 is generally a rectangular plate. The material of the elastic bracket 12 may be, but is not limited to, elastic metal materials such as aluminum or iron. The elastic bracket 12 includes a support area 121 and a load-bearing area 122. The load-bearing area 122 is recessed relative to the support area 121 in the negative direction of the Z-axis. In the preferred embodiment of the present invention, the support area 121 is connected to the load-bearing area 122, but it is not limited to this. The support area 121 and the load-bearing area 122 can also be formed integrally. The support area 121 has a first thickness T1, and the load-bearing area 122 has a second thickness T2, where the first thickness T1 is greater than the second thickness T2. The support area 121 includes a plurality of clearance holes 1211, a plurality of first cantilever portions 1212, a plurality of second cantilever portions 1213, and a plurality of mounting holes 1214. The clearance holes 1211 are used to provide clearance space for various electronic components, and therefore the clearance holes 1211 have various shapes and sizes, such as rectangular, circular, or irregular shapes. The first cantilever portion 1212 is formed by stamping an elastic bracket 12. A pressure sensor is mounted on the free end of the first cantilever portion 1212 facing the substrate 11. The first cantilever portion 1212 is used to support the pressure sensor. When the touch panel 10 is subjected to pressure, it causes the pressure sensor to undergo elastic deformation together, thereby enabling the pressure sensor to detect the pressure on the touch panel 10. In a preferred embodiment of the present invention, the first cantilever portion 1212 is disposed near the center of the support area 121. The support area 121 has three first cantilever portions 1212, but is not limited thereto. The number of first cantilever portions 1212 can be adjusted according to the number of pressure sensors. The second cantilever part 1213 is formed by stamping from the edge of the support area 121. The free end of the second cantilever part 1213 is bonded with an elastic connector 12131 on a side close to the substrate 11 and a pressure sensor is installed thereon. The elastic connector 12131 is used to elastically support the substrate 11. The elastic connector 12131 is bonded to the second surface 112 of the substrate 11. The elastic connector 12131 may be, but is not limited to, for example: silicone, silicone or rubber pad, etc. Mounting hole 1214 is used to fix the elastic bracket 12 to the casing of an electronic device (e.g., a laptop). In this embodiment, mounting hole 1214 includes screw holes, and the elastic bracket 12 is fixed to the casing of the electronic device by means of screw locking, but is not limited thereto. The support area 122 includes a platform portion 1221 and a plurality of connecting portions 1222. The platform portion 1221 is flat. The connecting portion 1222 is a sloped surface formed by extending from the edge of the platform portion 1221 in the positive Z-axis direction. The connecting portion 1222 is used to connect the support area 122 and the support area 121 and makes the support area 122 recessed in the negative Z-axis direction relative to the support area 121. The stage portion 1221 further includes a receiving space 12211, two perforations 12212, two first limiting members 12213, and two second limiting members 12214. The receiving space 12211 is located at the center of the stage portion 1221 and is used to provide space in the Z-axis direction for the actuating device 13. The two perforations 12212 are respectively and symmetrically disposed on both sides of the receiving space 12211. The two first limiting members 12213 are respectively formed by bending and protruding from the edges of the two perforations 12212 in the positive Z-axis direction, and the two first limiting members 12213 are symmetrically disposed. The second limiting member 12214 is formed by bending and protruding from one side of the platform portion 1221 away from the support area 121 in the positive direction of the Z-axis, and the two second limiting members 12214 are symmetrically arranged.

Referring again to Figures 1 and 2, the actuation device 13 includes a first actuation component 131 and a second actuation component 132. In this embodiment, the first actuation component 131 includes a coil 1311 and a magnetic core 1312. The coil 1311 is a hollow cylinder 13111 formed by spirally winding conductive wire or enameled wire. The hollow cylinder 13111 has a first end 13111a and a second end 13111b extending opposite to each other along the extension direction D. The coil 1311 includes copper wire, and the diameter of the coil 1311 is 0.05mm-0.1mm. The number of turns of the coil 1311 is 265-285 turns, but is not limited thereto. Its diameter and number of turns can be adjusted according to spatial configuration and vibration requirements. The magnetic core 1312 has a rectangular plate appearance. The material of the magnetic core 1312 may be, but is not limited to, plastic or iron. The magnetic core 1312 is inserted through the hollow cylinder 13111. That is to say, the coil 1311 is spirally wound around the outside of the magnetic core 1312. The coil 1311 roughly covers the surface of the magnetic core 1312. The second actuating component 132 includes a first magnetic component 1321 and a second magnetic component 1322. Please further refer to FIGS. 3A and 3B . The polarity directions of the first magnetic component 1321 and the second magnetic component 1322 are parallel to the extension direction D, and the polarity directions of the first magnetic component 1321 and the second magnetic component 1322 are oppositely arranged. The second actuating component 132 may be, but is not limited to, a magnet or an electromagnet, for example. In the preferred embodiment of the present invention, the coil 1311 is directly fixed to the second surface 112 of the substrate 11. The fixing method may be but is not limited to, for example, welding or bonding. The coil 1311 is disposed close to the center of the stage portion 1221, that is, close to the accommodating space 12211. The first magnetic component 1321 and the second magnetic component 1322 are respectively fixed on both sides of the accommodating space 12211 of the platform portion 1221 and respectively cover the two holes 12212. The first magnetic component 1321 and the second magnetic component 1322 will lean against the two first limiting components 12213 and the two second limiting components 12214 respectively. The advantage of setting the first limiting components 12213 and the second limiting components 12214 is that during the assembly of the touch panel 10, the first magnetic component 1321 and the second magnetic component 1322 can be quickly positioned and more stably fixed on the platform portion 1221. In a preferred embodiment of the invention, the surface area of the first actuating component 131 is slightly smaller than the area of the accommodating space 12211. The purpose of this design is to provide a gap between the first actuating component 131 and the second actuating component 132, so as to reserve space for the relative movement of the first actuating component 131 and the second actuating component 132 and avoid collisions or contact between the first actuating component 131 and the second actuating component 132 during relative movement.

Please refer again to Figures 3A and 3B, which are schematic diagrams of the relative movement of the first actuating component 131 and the second actuating component 132 in one embodiment of the present invention. In this embodiment, the first magnetic component 1321 and the second magnetic component 1322 are respectively provided near the first end 13111a and the second end 13111b extending along the X-axis direction of the coil 1311. The polarity directions of the coil 1311 are parallel to the X-axis and opposite to each other. When the coil 1311 is energized and generates an alternating magnetic field by changing the direction of the current, the coil 1311 generates attraction and repulsion between the first magnetic element 1321 and the second magnetic element 1322, respectively. This further causes the actuator 13 to drive the substrate 11 to vibrate back and forth relative to the elastic support 12 along the first vibration direction D1, wherein the first vibration direction D1 is parallel to the X-axis.

Please refer to Figures 3C to 3D, which are schematic diagrams of the relative movement of the first actuating component 131 and the second actuating component 132 in another embodiment of the present invention. This embodiment is generally the same as the previous embodiment, except that in this embodiment, a first magnetic component 1321 and a third magnetic component 1323 are provided near the first end 13111a of the coil 1311, and a second magnetic component 1322 and a fourth magnetic component 1324 are provided near the second end 13111b of the coil 1311. The polarity directions of these magnetic components are parallel to the X-axis. The first magnetic component 1321 and the third magnetic component... The polarities of 1323 and 1324 are opposite. When the coil 1311 is energized and an alternating magnetic field is generated by changing the direction of the current, the coil 1311 and the magnetic elements generate attraction and repulsion, which further causes the actuator 13 to drive the substrate 11 to vibrate back and forth relative to the elastic support 12 along the second vibration direction D2, wherein the second vibration direction D2 is parallel to the Y-axis.

Please also refer to Figure 4, which shows the touch panel 10' of the second embodiment of the present invention. The touch panel 10' of the second embodiment is generally the same as that of the first embodiment, except for the number of components and their relative arrangement of the first actuation component 131' and the second actuation component 132', as well as the structure of the bearing area 122'. In this embodiment, the first actuation component 131' includes two coils 1311 and two magnetic cores 1312. The detailed structure of the coils 1311 and the magnetic cores 1312 has been described in the previous embodiment and will not be repeated here. The second actuation component 132' includes at least one magnetic element 1321'. Please further refer to Figures 5A and 5B. The polarity direction of the magnetic element 1321' is parallel to the extension direction D of the coils 1311. The difference between the support area 122' and the previous embodiment is that in this embodiment, the platform portion 1221' includes two accommodating spaces 12211, and at least one magnetic element 1321' is fixed at the central position of the platform portion 1221'. The two accommodating spaces 12211 are symmetrically arranged on both sides of the central position of the platform portion 1221'. In this embodiment, the two accommodating spaces 12211 include square holes, but are not limited thereto. On the side of the two accommodating spaces 12211 near the central position of the platform portion 1221', they bend and protrude in the positive Z-axis direction to form two symmetrical first limiting elements 12213', while on the side of the central position away from the support area 121, they bend and protrude in the positive Z-axis direction to form a second limiting element 12214'. The magnetic component 1321' is disposed at the center of the stage portion 1221', that is, between the two first limiting components 12213' and the second limiting component 12214', and the magnetic component 1321' abuts against the two first limiting components 12213'. The two coils 1311 are respectively fixed to the second surface 112 of the substrate 11 and are respectively close to the two sides of the center of the stage portion 1221', that is, close to the two accommodating spaces 12211. The area of the two accommodating spaces 12211 is also slightly larger than the surface area of the two coils 1311, so that the two coils 1311 and the magnetic component 1321' will not contact or collide with each other when they move relative to each other.

Please refer again to Figures 5A and 5B, which are schematic diagrams of the relative movement of the first actuating component 131' and the second actuating component 132' in one of the second embodiments of the present invention. In this embodiment, the two ends of the magnetic component 1321' will respectively approach the second end 13111b of one coil 1311 and the first end 13111a of the other coil 1311. When the two coils 1311 are energized and generate alternating magnetic fields by changing the direction of the current, the two coils 1311 and the magnetic component 1321' generate attraction and repulsion, which further causes the actuating device 13 to drive the substrate 11 to vibrate back and forth relative to the elastic support 12 along the first vibration direction D1', wherein the first vibration direction D1' is parallel to the X-axis.

Please refer to Figures 5C to 5D, which are schematic diagrams of the relative movement of the first actuating component 131' and the second actuating component 132' in another embodiment of the present invention. This embodiment is generally the same as the previous embodiment, except that in this embodiment, the second actuating component 132' further includes a second magnetic component 1322'. The second magnetic element 1322' is adjacent to the magnetic element 1321', and its polarity direction is opposite to that of the magnetic element 1321'. When the second coil 1311 is energized and generates an alternating magnetic field by changing the direction of the current, the second coil 1311 will generate attraction and repulsion between the magnetic element 1321' and the second magnetic element 1322', which further causes the actuator 13 to drive the substrate 11 to vibrate back and forth relative to the elastic support 12 along the second vibration direction D2', wherein the second vibration direction D2' is parallel to the Y-axis.

In summary, the advantages of this invention are as follows: 1. First, the elastic bracket of this invention comprises a support area and a load-bearing area. Since either the first or second actuating component is located in the load-bearing area, and the thickness of the load-bearing area plate is less than the thickness of the support area plate, the overall thickness of the touchpad can be effectively reduced. 2. Furthermore, as shown in Figures 3A to 3D or 5A to 5D, the relative positions of the first and second actuating components along the Z-axis are "offset," meaning their relative positions are not directly above or below each other. Therefore, the Z-axis space of the touchpad can be effectively utilized. 3. Finally, the first actuation component of this invention is a cylindrical structure formed by spirally winding a solid coil (e.g., conductor or enameled wire). Compared to circuit boards with multi-layer induction circuits that require etching processes, the production cost is significantly reduced. This invention is also easier to repair and disassemble, and the inductance value of the coil can be further changed by adjusting the coil's diameter, total length, or material to adjust the vibration amplitude. This provides greater design tolerance and flexibility.

The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Any simple equivalent changes and modifications made to the scope of the claims and description of the present invention shall still fall within the scope of the present invention. Furthermore, no embodiment or claim of the present invention needs to achieve all the purposes, advantages, or features disclosed in the present invention. In addition, the abstract and title are merely for assisting in patent document searches and are not intended to limit the scope of the present invention. Moreover, the terms "first," "second," etc., used in this specification or claim are only used to name elements or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of elements.

10, 10’: Touch panel 11: Base plate 12: Flexible support 13: Actuation device 111: First surface 112: Second surface 121: Support area 122, 122’: Load-bearing area 131, 131’: First actuation component 132, 132’: Second actuation component 1211: Clearance hole 1212: First cantilever portion 1213: Second cantilever portion 1214: Mounting hole 1221: Platform portion 1222: Connecting portion 1311: Coil 1312: Magnetic core 1321: First magnetic component 1322, 1322’: Second magnetic component 1323: Third magnetic component 1324: Fourth magnetic component 1321’: Magnetic component 12211: Accommodating space 12212: Hole 12213, 12213’: First limiting component 12214, 12214’: Second limiting component 12131: Elastic connector 13111: Hollow cylinder 13111a: First end 13111b: Second end D: Extension direction D1, D1’: First vibration direction D2, D2’: Second vibration direction T1: First thickness T2: Second thickness X: X-axis Y: Y-axis Z: Z-axis

Figure 1 is an exploded view of the touchpad of the first embodiment of the present invention. Figure 2 is a cross-sectional view of the touchpad of the first embodiment of the present invention. Figures 3A to 3D are schematic diagrams of the relative movement of the first actuating component and the second actuating component in the first embodiment of the present invention. Figure 4 is an exploded view of the touchpad of the second embodiment of the present invention. Figures 5A to 5D are schematic diagrams of the relative movement of the first actuating component and the second actuating component in the second embodiment of the present invention. Figure 6 is a simplified side view of other embodiments of the present invention.

10: Touchpad

11:Substrate

12: Elastic support

13: Actuation device

111: First Page

112: Second Page

121: Support Area

122: Loading Area

131: First Actuating Component

132: Second Actuation Component

1211: Clearance Hole

1212: First cantilever section

1213: Second cantilever section

1214: Mounting Hole

1221: Platform Section

1222: Connecting Part

1311: Coil

1312: Magnetic core

1321: First Magnetic Component

1322: Second magnetic component

12211: Storage space

12212: Perforation

12213: First limiting component

12214: Second limiting component

12131: Flexible connector

13111: Hollow Column

13111a: First end

13111b: Second end

D: Direction of extension

X: X-axis

Y: Y-axis

Z: Z-axis

Claims (16)

A touchpad includes: a substrate having a first surface and a second surface, the first surface and the second surface being disposed opposite each other; an elastic bracket disposed on one side of the second surface; and an actuation device including a first actuating component and a second actuating component, the first actuating component being fixed to the second surface or the side of the elastic bracket facing the substrate, the second actuating component being fixed relative to the first actuating component to the second surface or the side of the elastic bracket facing the substrate, the first actuating component and the second actuating component moving relative to each other via a magnetic field force to cause the substrate and the elastic bracket to vibrate relative to each other. The first actuation component includes a coil spirally wound into a hollow cylinder. The hollow cylinder extends parallel to the substrate and the elastic support. The second actuation component includes a first magnetic element and a second magnetic element, wherein the polarity directions of the first and second magnetic elements are parallel to the extending direction of the hollow cylinder, and the polarity directions of the first and second magnetic elements are opposite. The coil further includes a first end and a second end, the first end and the second end being disposed opposite to each other. The first magnetic element is disposed near the first end, and the second magnetic element is disposed near the second end. The touchpad as described in claim 1, wherein the coil includes a copper wire. The touchpad as described in claim 1, wherein the coil diameter is 0.05mm-0.1mm and the coil has 265-285 turns. The touchpad as described in claim 1, wherein the first actuation component further includes a magnetic core passing through the hollow cylinder, and the coil substantially covering the surface of the magnetic core. The touchpad as described in claim 4, wherein the magnetic core comprises a plastic component or an iron component. The touchpad as described in claim 1, wherein the elastic support includes a support area and a load-bearing area, wherein the support area has a first thickness and the load-bearing area has a second thickness, the first thickness being greater than the second thickness. The touchpad as described in claim 6, wherein when the first actuation component is fixed to the second surface, the first actuation component is located near the center of the bearing area, and the first magnetic component and the second magnetic component are fixed to the bearing area and are respectively near the first end and the second end. The touchpad as described in claim 7, wherein the central location of the bearing area further includes a receiving space, and the first actuating component is disposed corresponding to the receiving space. The touch panel as described in claim 6, wherein when the first actuation component is fixed to the side of the elastic bracket facing the substrate, the first actuation component is disposed at the center of the bearing area, and the first magnetic component and the second magnetic component are fixed to the second surface and respectively close to the first end and the second end. A touchpad includes: a substrate having a first surface and a second surface, the first surface and the second surface being disposed opposite each other; an elastic bracket disposed on one side of the second surface, the elastic bracket including a support region and a load-bearing region, wherein the support region has a first thickness, the load-bearing region has a second thickness, and the first thickness is greater than the second thickness; and an actuation device including a first actuation component and a second actuation component, the first actuation component being fixed to the second surface or the side of the elastic bracket facing the substrate, the second actuation component being fixed relative to the first actuation component to the second surface or the side of the elastic bracket facing the substrate, the first actuation component and the second actuation component moving relative to each other via a magnetic field force to cause relative vibration of the substrate and the elastic bracket, The first actuation component includes at least two coils, each coil being spirally wound into a hollow cylinder. The hollow cylinders extend parallel to the substrate and the elastic support. The second actuation component further includes a magnetic element having a polarity parallel to the extending direction of the hollow cylinders. The magnetic element is disposed close to the space between the two coils. The touchpad as described in claim 10, wherein the coils include a copper wire. The touchpad as described in claim 10, wherein the coils have a diameter of 0.05mm-0.1mm and the number of turns of the coils is 265-285. The touchpad as described in claim 10, wherein the first actuation component further includes two magnetic cores respectively disposed in the hollow cylinders, and the coils substantially covering the surface of the magnetic cores. The touchpad as described in claim 13, wherein the magnetic cores comprise a plastic component or an iron component. As described in claim 10, when the first actuation component is fixed to the second surface, the second actuation component is fixed to the center of the load-bearing area, and the coils are respectively disposed on both sides near the center. The touchpad as described in claim 15, wherein the carrying area further includes two receiving spaces symmetrically disposed on both sides of the center of the carrying area, and coils are disposed at locations corresponding to the receiving spaces.