CN218383929U

CN218383929U - Pressure touch pad and electronic equipment

Info

Publication number: CN218383929U
Application number: CN202222522142.7U
Authority: CN
Inventors: 郭益平; 张�荣; 王朋
Original assignee: Shenzhen Goodix Technology Co Ltd
Current assignee: Shenzhen Goodix Technology Co Ltd
Priority date: 2022-07-25
Filing date: 2022-09-23
Publication date: 2023-01-24
Anticipated expiration: 2032-09-23
Also published as: CN115454251A; WO2024020725A1; CN115398379A

Abstract

The application provides a pressure touch pad and electronic equipment, this pressure touch pad includes: the touch control device comprises a printed circuit board, a pressure sensor, a supporting plate, a touch controller and a touch feedback component, wherein the supporting plate is arranged below the printed circuit board and comprises a reinforcing area, a fastening area and two flexible connecting arms, the two flexible connecting arms are connected through the reinforcing area, the reinforcing area is fixedly connected with the printed circuit board, and the fastening area is used for being fixedly connected with a shell of the electronic equipment; in the first direction, the distances from the installation position of the tactile feedback part to the two long sides of the pressure touch pad are unequal; the reinforcing region comprises a tactile feedback component avoiding hole for avoiding the tactile feedback component; wherein, the first direction is the short side direction of the pressure touch pad.

Description

Pressure touch pad and electronic equipment

Technical Field

The embodiment of the application relates to the technical field of electronics, in particular to a pressure touch pad and electronic equipment.

Background

For a pressure touch pad with a tactile feedback function, a tactile feedback component needs to be placed at the center below a touch panel to ensure that any area of the touch panel contacted by a finger can feel the same vibration experience in actual experience.

However, in the actual whole stacking design process, most of the components such as the battery assembly and the main board are under the touch pad. The battery cell can bulge in the charging and discharging process, the whole machine is stacked without too much safety space, the metal object of the tactile feedback component is prevented from contacting the battery cell to cause safety accidents due to piercing, and the placement position of the tactile feedback component is offset under the common condition.

The offset of the haptic feedback elements creates a vibration inconsistency problem.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a pressure touch pad and an electronic device, which can solve the problem of inconsistent vibration generated after the tactile feedback component is biased.

In a first aspect, a pressure touch pad is provided, which includes: the touch control device comprises a printed circuit board, a pressure sensor, a support plate, a touch controller and a tactile feedback component; the upper surface of the printed circuit board is provided with a touch electrode layer, and the touch electrode layer is used for sensing the touch position of a finger when the finger touches or presses the pressure touch control plate and outputting a corresponding touch induction signal; the pressure sensor is arranged below the printed circuit board and is used for generating deformation when the finger presses the pressure touch pad and outputting a corresponding pressure sensing signal; the supporting plate is arranged below the printed circuit board and comprises a reinforcing area, a fastening area and two flexible connecting arms, wherein two sides of the reinforcing area are respectively connected with the fastening area through the two flexible connecting arms, the reinforcing area is fixedly connected with the printed circuit board, and the fastening area is used for being fixedly connected with a shell of the electronic equipment; the touch controller is fixedly arranged on the printed circuit board, electrically connected with the touch electrode layer and the pressure sensor, and used for receiving the touch sensing signal from the touch electrode layer to determine the touch position of the finger on the pressure touch pad and receiving the pressure sensing signal from the pressure sensor to determine the pressure applied by the finger; the tactile feedback component is arranged on the lower surface of the printed circuit board, and the distances from the installation position of the tactile feedback component to the two long edges of the pressure touch pad are unequal in a first direction; the touch feedback component is electrically connected with the touch controller and used for responding the pressure applied by the finger to carry out vibration feedback, and the first direction is the short side direction of the pressure touch pad; the reinforcing region includes a haptic feedback component avoidance hole for avoiding the haptic feedback component.

The reinforcing area and the fastening area of the supporting plate are integrally connected through the flexible connecting arm, so that the assembling process of the pressure touch control plate can be simplified. And when the touch feedback component vibrates, the vibration can be transmitted through the flexible connecting arm, so that the problem of inconsistent vibration when the touch feedback component is biased is solved, and the vibration experience of a user is improved.

In one possible implementation, there is a gap between the two flexible connecting arms and the printed circuit board, and the two flexible connecting arms are used for balancing the vibration of the tactile feedback part.

A gap is formed between the flexible connecting arm and the printed circuit board and used for providing a deformation space for pressing the pressure touch pad by the finger. When the tactile feedback member vibrates, the two flexible connecting arms have microscopic motion in a direction parallel to the vibration direction of the tactile feedback member, so that the vibration of the tactile feedback member can be balanced.

In a possible implementation manner, the fastening region is disposed around the reinforcing region, two windowing regions are respectively formed between the outermost edges of two sides of the reinforcing region and the fastening region in a second direction, and the two flexible connecting arms are respectively disposed in the two windowing regions, where the second direction is a long side direction of the pressure touch pad.

In the embodiment, the flexible connecting arm is arranged in the windowing area between the fastening area and the outermost edge of the reinforcing area, so that the assembly process of the supporting plate can be simplified, and the cost is saved.

In one possible implementation, the two windowed regions include a first windowed region and a second windowed region, the second windowed region having an area greater than the area of the first windowed region.

In one possible implementation, the area of the reinforcement area is smaller than the sum of the areas of the two windowed areas, and the two flexible connecting arms are respectively located at two sides of the haptic feedback part and respectively located near the short sides of the support plate.

In this embodiment, the area of the windowing region is larger than the area of the reinforcing region, and the weight of the pressure touch pad can be reduced by reducing the area of the reinforcing region as much as possible without affecting the rigidity of the pressure touch pad. Because the two flexible connecting arms are respectively positioned at the two sides of the touch feedback component, the vibration generated by the touch feedback component can be uniformly distributed at each position of the pressure touch pad, so that the problem of inconsistent vibration when the touch feedback component is biased can be solved, and the vibration experience of a user is improved.

In a possible implementation manner, a tactile feedback component avoiding hole is formed in the reinforcement area and used for avoiding the tactile feedback component, and the reinforcement area is arranged between the periphery of the tactile feedback component avoiding hole and the windowing area.

In the embodiment of the application, the reinforcement area is included between the periphery of the tactile feedback component avoidance hole and the windowing area, so that the flexible connecting arm can transmit vibration generated by the tactile feedback component more uniformly under the condition of not influencing the rigidity of the pressure touch control plate, and the effect of balancing the vibration is achieved.

In a possible implementation manner, the two flexible connecting arms each include a main body portion, a first connecting portion and a second connecting portion, the main body portion extends along the first direction, two ends of the main body portion are respectively connected with one end of the first connecting portion and one end of the second connecting portion, the other end of the first connecting portion is connected with the reinforcing area, and the other end of the second connecting portion is connected with the fastening area.

In one possible implementation, the main body of the flexible connection arm is provided with a widened portion, the length-to-width ratio of the main body being greater than or equal to 10; or the main body part of the flexible connecting arm is uniform and long-strip-shaped, and the length-width ratio of the main body part is greater than or equal to 10.

The main body part of the flexible connecting arm is provided with a widened part, so that the stability of the structure of the flexible connecting arm can be enhanced, and the flexible connecting arm is not easy to break; the main body parts of the flexible connecting arms are uniformly arranged into strip shapes with the same width, so that vibration transmission is more uniform when the two flexible connecting arms balance vibration of the touch feedback component. In addition, setting the aspect ratio of the flexible connecting arm to be greater than or equal to 10, can effectively shorten the vibration trailing time (or braking time) of the tactile feedback component, so that the vibration experience is more crisp.

In one possible implementation, the width of the main body portion of the flexible connecting arm is greater than or equal to 1.5mm.

The width of the flexible connecting arm is set to be larger than or equal to 1.5mm, so that the connecting strength between the flexible connecting arm and the reinforcing area or the fastening area can be enhanced, and the connecting part is not easy to break.

In a possible implementation manner, the supporting plate is further provided with a cantilever beam structure, and the cantilever beam structure is used for supporting the pressure sensor and driving the pressure sensor to deform together when the pressure touch pad bears pressure.

In the embodiment, the cantilever beam structure for supporting the pressure sensor and the fastening area of the support plate are integrally formed, and an elastic support for supporting the pressure sensor is not required to be additionally arranged, so that the number of components of the pressure touch pad is reduced, the assembly process is simplified, and the cost is saved.

In a possible implementation manner, the supporting plate is provided with four cantilever beam structures, the four cantilever beam structures are symmetrically distributed at four corners of the supporting plate in the first direction or the second direction, the four cantilever beam structures extend from the fastening area to the reinforcing area, and the extending direction forms an included angle with the first direction or the second direction.

In this embodiment, the cantilever structures are respectively disposed at four corners of the supporting plate, so that the structural stability of the pressure touch pad can be improved. Secondly, pass through the cantilever beam structure with pressure sensor at four angles of backup pad in first direction or second direction upper symmetric distribution, can also improve pressure detection's homogeneity.

In one possible implementation manner, the joints of the four cantilever beam structures and the fastening area form steps for protecting the four cantilever beam structures.

The cantilever beam structure forms the step with the junction in fastening district, and the cantilever beam structure can be protected to the step when the deformation takes place for the difficult rupture of cantilever beam structure.

In a possible implementation manner, the two first connecting portions of the two flexible connecting arms are respectively arranged close to two different cantilever beam structures arranged along a diagonal direction of the pressure touch pad; or the two first connecting parts of the two flexible connecting arms are respectively arranged close to two different cantilever beam structures arranged along the second direction.

In one possible implementation, the pressure touch pad further includes: a Flexible Printed Circuit (FPC) for electrically connecting the pressure sensor with the Printed Circuit board.

In a possible implementation manner, the FPC is in a bent shape, two ends of the FPC are respectively connected to the pressure sensors on the surfaces of the two cantilever structures disposed on the same short side of the supporting plate, and the extending portion of the FPC is electrically connected to the printed circuit board.

Set up FPC into the shape of buckling, when receiving pressure, the setting of the shape of buckling can reduce the pulling force that FPC deformation produced to protect the FPC structure.

In one possible implementation, the pressure touch pad further includes: and the protective panel is arranged above the printed circuit board and used for touching and pressing the finger.

In one possible implementation, a fastening point is provided at the fastening region connected to the root of the cantilever beam structure, such that the fastening region is fixedly connected to the housing at the fastening point.

In a second aspect, an electronic device is provided, which includes a casing and the pressure touch pad in the first aspect and any implementation manner of the first aspect, where the casing is configured to be fixedly connected to the fastening area.

Drawings

Fig. 1 shows a schematic exploded view of a pressure touch pad according to an embodiment of the present application.

Figure 2 shows a schematic block diagram of the flexible connecting arm of figure 1.

Fig. 3 shows a schematic bottom view of a pressure touch pad of an embodiment of the present application.

Fig. 4 shows a schematic exploded view of a pressure touch pad according to another embodiment of the present application.

Figure 5 shows a schematic block diagram of the flexible connecting arm of figure 4.

Fig. 6 shows a schematic exploded view of a pressure touch pad according to yet another embodiment of the present application.

Fig. 7 shows a schematic block diagram of the flexible connecting arm of fig. 6.

Fig. 8 shows another schematic exploded view of a pressure touch pad according to yet another embodiment of the present application.

Fig. 9 shows a first schematic top view of a support plate of a further embodiment of the present application.

Fig. 10 shows a second schematic top view of a support plate of a further embodiment of the present application.

Fig. 11 shows a third schematic top view of a support plate of a further embodiment of the present application.

Fig. 12 shows a fourth schematic top view of a support plate of a further embodiment of the present application.

Fig. 13 shows a schematic exploded view of an electronic device of a further embodiment of the present application.

FIG. 14 shows two schematic positions of a haptic feedback component in a pressure touchpad.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

A touch pad is an input device for controlling a screen cursor applied to an electronic device. The touch control panel obtains touch control information such as high-resolution finger coordinates by detecting small capacitance changes of fingers of a user during operation in a panel area so as to accurately control movement and clicking of a screen cursor. Usually, a single key is also configured on the back of the touch pad, and the functions of the left key and the right key of the traditional mouse are realized by detecting the behaviors of the keys.

In order to improve the operation convenience of the touch pad, the pressure touch pad is gradually becoming a new trend. The pressure touch pad cancels the physical keys of the conventional touch pad and is added with pressure induction and vibration feedback functions.

The tactile feedback component in the pressure touch pad of the electronic equipment needs to be placed in the right center position below the touch panel, so that the vibration consistency of the pressure touch pad can be ensured to be in a smaller range during actual experience, and any area of the pressure touch pad contacted by a finger can feel the same vibration experience.

However, in the actual whole machine stacking design process, most of the parts under the pressure touch panel are battery assemblies and main boards. The battery cell can bulge in the charging and discharging process, the whole machine is stacked without too much safety space, the metal object of the touch feedback component is prevented from contacting the battery cell to cause safety accidents due to puncture, and the placement position of the touch feedback component is offset under the common condition. For example, the haptic feedback component may be placed between a plastic frame of the battery package and the touch pad, or between the motherboard and the touch pad.

The offset of the haptic feedback elements can cause inconsistent vibration.

In view of this, embodiments of the present application provide a pressure touch pad, which can solve the problem of inconsistent vibration after the haptic feedback part is biased.

It should be understood that the technical solutions of the embodiments of the present application can be applied to various electronic devices.

For example, portable or mobile computing devices such as smart phones, laptops, tablets, gaming devices, and other electronic devices such as electronic databases, automobiles, automated Teller Machines (ATMs), and the like. However, the embodiments of the present application do not limit this.

Fig. 1 shows a schematic exploded view of a pressure touch pad 100 according to an embodiment of the present application. The pressure touch pad 100 may be applied to an electronic device. It should be noted that "up" and "down" described hereinafter are positional relationships embodied by standing at the user's angle, that is, the surface that can be touched by a finger for the user is the upper surface of the pressure touch pad 100. As shown in fig. 1, the pressure touch pad 100 includes: a printed circuit board 110, a pressure sensor 120, a support board 130, a touch controller 140, and a haptic feedback component 150.

The upper surface of the printed circuit board 110 is provided with a touch electrode layer (not shown in the figure) for sensing a touch position of a finger when the finger touches or presses the pressure touch pad 100 and outputting a corresponding touch sensing signal; the pressure sensor 120 is disposed below the printed circuit board 110, and is configured to deform when a finger presses the pressure touch pad 100, and output a corresponding pressure sensing signal; the supporting board 130 is disposed under the printed circuit board 110, the supporting board 130 includes a reinforcing area 131, a fastening area 132, and two flexible connecting arms 133, as shown in fig. 1, the two flexible connecting arms 133 are a first flexible connecting arm 1331 and a second flexible connecting arm 1332, respectively, and the reinforcing area 131 is connected to the fastening area 132 through the two flexible connecting arms 133. For example, as shown in fig. 1, two sides of the reinforcing region 131 along the second direction Y are connected to the fastening region 132 via the first flexible connecting arm 1331 and the second flexible connecting arm 1332, respectively. The reinforcing portion 131 is fixedly connected to the printed circuit board 110, and the fastening portion 132 is used for fixedly connecting to a housing of an electronic device; the touch controller 140 is fixedly mounted below the printed circuit board 110 and electrically connected to the touch electrode layer and the pressure sensor 120, and is configured to receive a touch sensing signal from the touch electrode layer to determine a touch position of a finger on the pressure touch pad 100, and receive a pressure sensing signal from the pressure sensor 120 to determine a pressure applied by the finger; the tactile feedback member 150 is mounted on the lower surface of the printed circuit board 110, in the first direction X, distances between the mounting position of the tactile feedback member 150 and the two long sides of the pressure touch pad 100 are not equal, and the tactile feedback member 150 is electrically connected to the touch controller 140 for performing vibration feedback in response to the pressure applied by the finger.

In the present application, the first direction X is a short side direction of the pressure touch panel 100, and the second direction Y is a long side direction of the pressure touch panel 100.

The pressure sensor 120 may be a resistive pressure sensor, also known as a piezoresistive force sensor. For example, the pressure sensor 120 is a strain gauge pressure sensor. As shown in fig. 1, the pressure sensor 120 may be disposed below the supporting plate 130, or may be disposed between the supporting plate 130 and the printed circuit board 110.

It should be noted that the tactile feedback part 150 in the embodiment of the present application provides vibration feedback to the user based on the pressure signal detected by the pressure sensor.

In addition to carrying and supporting the touch electrode layer, the printed circuit board 110 may also carry the electronic components of the pressure touch pad 100, which may include, for example, a touch controller 140 and a haptic feedback component 150. The touch controller 140 may be electrically connected to the touch electrode layer and the pressure sensor 120, and is configured to provide a driving signal to the touch electrode layer for capacitive touch detection, and receive a touch sensing signal and a pressure sensing signal output by the touch electrode layer and the pressure sensor 120 when a finger presses the pressure touch pad 100, and determine finger position information and a pressure applied by the finger based on the touch sensing signal and the pressure sensing signal. The touch controller 140 may also be coupled to the haptic feedback component 150 and further configured to drive the haptic feedback component 150 for vibrotactile feedback in response to the detected magnitude of pressure. In an embodiment, the touch controller 140 may be a touch chip integrating pressure detection and touch position detection, or may include two separately arranged pressure detection chips for detecting pressure and touch position.

Specifically, in the embodiment of the present application, the supporting plate 130 is used for supporting the printed circuit board 110, and should have a certain strength. The supporting plate 130 may include a reinforcing region 131 and a fastening region 132, the reinforcing region 131 refers to a partial region of the supporting plate 130 for supporting the printed circuit board 110, that is, the reinforcing region 131 is fixedly connected to the lower surface of the printed circuit board 110. For example, the reinforcing region 131 may be bonded to the lower surface of the printed circuit board 110. The fastening area 132 refers to a partial area of the support plate 130 where the support plate 130 is mounted to the electronic device, for example, the fastening area 132 may connect the support plate 130 to a chassis of the electronic device. The supporting board 130 further comprises two flexible connecting arms 133, one ends of the two flexible connecting arms 133 are integrally connected with the reinforcing area 131, the other ends of the two flexible connecting arms 133 are integrally connected with the fastening area 132, and because the reinforcing area 131 is fixedly connected with the lower surface of the printed circuit board 110, one ends of the two flexible connecting arms 133 are fixed on the lower surface of the printed circuit board 110 through the reinforcing area 131. The two flexible connecting arms 133 are connected by a reinforcing region 131, and the reinforcing region 131 and the fastening region 132 are connected by the two flexible connecting arms 133, that is, the reinforcing region 131 and the fastening region 132 are flexibly connected. The flexible connection may also be referred to as a flex connection, so the two flexible link arms 133 may also be referred to as flex arms. The two flexible connecting arms 133 in the embodiment of the present application have both a relationship of restraining or transmitting vibration and a certain degree of relative displacement. That is, there may be a gap between the two flexible connecting arms 133 and the lower surface of the printed circuit board 110 for providing a space for the finger to press the touch pad to deform. When the tactile feedback member vibrates, the two flexible connecting arms have microscopic motion in a direction parallel to the vibration direction of the tactile feedback member, so that the vibration of the tactile feedback member can be balanced. Meanwhile, one end of each of the two flexible connecting arms 133 is fixed to the lower surface of the printed circuit board 110 through the reinforcing region 131, so that the stability of the two flexible connecting arms 133 can be enhanced, the vibration of the tactile feedback component can be effectively balanced, and the vibration experience of a user can be improved.

Therefore, according to the pressure touch pad provided by the embodiment of the application, the reinforcing area, the fastening area and the flexible connecting arm of the supporting plate are integrally connected, so that the assembly process of the pressure touch pad can be simplified. And when the touch feedback component vibrates, the vibration can be transmitted through the relative displacement of the flexible connecting arm, so that the vibration generated by the touch feedback component is favorably and uniformly distributed at each position of the pressure touch pad, the problem of inconsistent vibration when the touch feedback component is biased can be solved, and the vibration experience of a user is improved.

Alternatively, as shown in fig. 1, the fastening region 132 is disposed around the reinforcing region 131, the reinforcing region 131 is an irregular structure, two windowed regions 134 are respectively formed between the outermost edges of two sides of the reinforcing region 131 and the fastening region 132 in the second direction Y, and the two flexible connecting arms 133 are respectively disposed in the two windowed regions 134, and the two windowed regions 134 include a first windowed region 1341 and a second windowed region 1342. For example, as shown in fig. 1, in the second direction Y, a first window area 1341 is formed between the outermost edge of the right side of the reinforcing area 131 and the fastening area 132, and a second window area 1342 is formed between the outermost edge of the left side of the reinforcing area 131 and the fastening area 132, wherein the first flexible connecting arm 1331 is disposed in the first window area 1341, and the second flexible connecting arm 1332 is disposed in the second window area 1342. Optionally, as shown in fig. 1, the area of the second windowed region 1342 is larger than the area of the first windowed region 1341.

Optionally, as shown in fig. 1, the area of the reinforcing region 131 is smaller than the sum of the areas of the first windowing region 1341 and the second windowing region 1342. The two flexible connecting arms 133 are respectively located at both sides of the haptic feedback part 150, and the two flexible connecting arms 133 are respectively located near the short sides of the supporting plate 130. For example, as shown in FIG. 1, the first flexible connecting arm 1331 and the second flexible connecting arm 1332 are symmetric around the center point of the installation position of the tactile feedback member 150, i.e., the first flexible connecting arm 1331 can completely coincide with the second flexible connecting arm 1332 after rotating 180 degrees around the center point of the installation position of the tactile feedback member 150. For another example, the first flexible connecting arm 1331 and the second flexible connecting arm 1332 are symmetrical along a center line of the pressure touch pad 100 in the first direction X, that is, after the first flexible connecting arm 1331 is folded in half along a center line of the installation position of the haptic feedback member 150 in the second direction Y, the first flexible connecting arm 1331 can be completely overlapped with the second flexible connecting arm 1332.

In this embodiment, the area of the windowing region is larger than the area of the reinforcement region, and the weight of the pressure touch pad can be reduced by reducing the area of the reinforcement region as much as possible without affecting the rigidity of the pressure touch pad. The reinforcement area is irregular structure and forms a plurality of windowing regions with the fastening area between for the components and parts of printed circuit board lower surface arrange compacter and law under the condition that has certain rigid support printed circuit board.

In the embodiment, the two flexible connecting arms are respectively positioned at the two sides of the tactile feedback component, so that the vibration generated by the tactile feedback component can be uniformly distributed at each position of the pressure touch pad, the problem of inconsistent vibration when the tactile feedback component is biased can be solved, and the vibration experience of a user is improved.

Optionally, as shown in fig. 1, a haptic feedback member avoiding hole 136 is formed in the reinforcement region 131 for avoiding and accommodating the haptic feedback member 150, and the reinforcement region is included between the periphery of the haptic feedback member avoiding hole 136 and the window opening region 134. In the first direction X, the distances from the haptic feedback member avoiding hole 136 to the two long sides of the support plate 130 are unequal, so that the distances from the mounting position where the haptic feedback member 150 is mounted on the lower surface of the printed circuit board 110 through the haptic feedback member avoiding hole 136 to the two long sides of the pressure touch pad 100 are unequal. That is, the haptic feedback member 150 is offset toward one long side of the pressure touch pad 100 with respect to the center point of the pressure touch pad 100. For example, in fig. 1, the distance L1 from the center point of the haptic feedback member avoidance hole 136 to the first long side of the support plate 130 and the distance L2 from the center point to the second long side of the support plate 130 are not equal.

Fig. 2 is an enlarged schematic view of the first flexible connecting arm 1331 in fig. 1. As shown in fig. 2, the first flexible connecting arm 1331 includes a main body portion 13311, a first connecting portion 13312 and a second connecting portion 13313. As shown in fig. 1 and 2, the main portion 13311 of the first flexible connecting arm 1331 extends along the first direction X, two ends of the main portion 13311 of the first flexible connecting arm 1331 are respectively connected to one end of the first connecting portion 13312 of the first flexible connecting arm 1331 and one end of the second connecting portion 13313 of the first flexible connecting arm 1331, the other end of the first connecting portion 13312 of the first flexible connecting arm 1331 is connected to the reinforcing region 131, and the other end of the second connecting portion 13313 of the first flexible connecting arm 1331 is connected to the fastening region 132. As shown in fig. 2, the length of the main body part 13311 of the first flexible connecting arm 1331 is from arrow 1 to arrow 2. The width of the main portion 13311 of the first flexible connecting arm 1331 is the length from arrow 3 to arrow 4.

Optionally, as shown in fig. 2, the main body portion 13311 of the first flexible connecting arm 1331 further comprises a widened portion 13314, and the length-to-width ratio of the main body portion 13311 is greater than or equal to 10:1.

optionally, the width of the widened portion 13312 is set between 5.5mm and 10mm, which improves the stability of the flexible arm structure without affecting the vibration uniformity.

It should be noted that, the structure and the size of the second flexible connecting arm 1332 can refer to the description of the first flexible connecting arm 1331, and for brevity, the description is omitted here.

The main body part of the flexible connecting arm comprises a widened part, so that the stability of the flexible arm structure can be enhanced and the flexible arm structure is not easy to break; setting the aspect ratio of the main body portion of the flexible connection arm to be greater than or equal to 10 can effectively shorten the vibration tailing time (or braking time) of the haptic feedback member, making the tremolo experience more crisp.

Optionally, in this embodiment, the width of the main portion 13311 of the flexible connecting arm is greater than or equal to 1.5mm.

The width of the main body part of the flexible connecting arm is set to be larger than or equal to 1.5mm, so that the connecting strength between the flexible connecting arm and the reinforcing area or the fastening area can be enhanced, and the connecting part is not easy to break under the condition of not influencing the vibration consistency effect.

Fig. 4 is a schematic exploded view of a pressure touch pad according to another embodiment of the present disclosure, and fig. 5 is an enlarged schematic structure view of a first flexible connecting arm 1331 in fig. 4. The embodiment shown in fig. 4 differs from the embodiment shown in fig. 1 in whether the flexible webs 133 comprise widened portions, in particular the embodiment shown in fig. 1 comprises widened portions 13314, whereas the embodiment shown in fig. 4 has a uniform elongated configuration.

As shown in fig. 5, the first flexible connecting arm 1331 includes a main body portion 13311, a first connecting portion 13312 and a second connecting portion 13313. As shown in fig. 4 and 5, the main portion 13311 of the first flexible connecting arm 1331 extends along the first direction X, two ends of the main portion 13311 of the first flexible connecting arm 1331 are respectively connected to one end of the first connecting portion 13312 of the first flexible connecting arm 1331 and one end of the second connecting portion 13313 of the first flexible connecting arm 1331, the other end of the first connecting portion 13312 of the first flexible connecting arm 1331 is connected to the reinforcing region 131, and the other end of the second connecting portion 13313 of the first flexible connecting arm 1331 is connected to the fastening region 132.

Optionally, as shown in fig. 5, the main body portion 13311 of the flexible connecting arm has a uniform width and a uniform thickness, and the aspect ratio of the main body portion 13311 is greater than or equal to 10.

As shown in fig. 5, the length of the main body portion 13311 of the first flexible connecting arm 1331 is the length from arrow 1 to arrow 2. The width of the main portion 13311 of the first flexible connecting arm 1331 is the length from arrow 3 to arrow 4.

The flexible connecting arms are set to be uniform in width and thickness, vibration transmission can be more uniform when the two flexible connecting arms balance vibration of the tactile feedback component, the length-width ratio is set to be greater than or equal to 10, vibration trailing time (or braking time) of the tactile feedback component can be effectively shortened, and the vibration experience is more crisp.

In one possible implementation, the width of the main portion 13311 of the flexible connecting arm is greater than or equal to 1.5mm.

As shown in fig. 5, the length of the main body portion 13311 of the first flexible connection arm 1331 in the second direction Y, i.e. the width of the main body portion 13311 of the first flexible connection arm 1331, is the same as the length of the second connection portion 13313 in the first direction X is greater than the width of the main body portion 13311 of the first flexible connection arm 1331. It should be noted that, the structure and the size of the second flexible connecting arm 1332 can refer to the description of the first flexible connecting arm 1331, and for brevity, the description is omitted here.

The lengths of the first connecting portion and the second connecting portion of the flexible connecting arm in the first direction X are larger than the width of the main body portion, so that the vibration performance of the flexible connecting arm for balancing the touch feedback component is guaranteed, and meanwhile, the connectivity between the flexible connecting arm and the supporting plate is improved.

Fig. 3 shows a schematic bottom view of the pressure touch pad 100, i.e. a back view of the pressure touch pad 100 according to the embodiment of the present application.

Optionally, as shown in fig. 3, the supporting board 130 is further provided with a cantilever structure 135, and the cantilever structure 135 can be used for supporting the pressure sensor 120 and driving the pressure sensor 120 to deform together when the pressure touch pad 100 bears a pressure.

Alternatively, the cantilevered beam structure 135 is used to support the pressure sensor 120, it being understood that the pressure sensor 120 is affixed to an upper surface of the cantilevered beam structure 135. Alternatively, as shown in FIG. 3, the pressure sensor 120 may be attached to the lower surface of the cantilever structure 135. It should be noted that the lower surface of the cantilever beam structure 135 refers to the surface of the cantilever beam structure 135 away from the printed circuit board 110, and the upper surface of the cantilever beam structure 135 refers to the surface close to the printed circuit board 110.

Alternatively, as shown in fig. 3, the supporting plate 130 is provided with four cantilever beam structures, including a first cantilever beam structure 1351, a second cantilever beam structure 1352, a third cantilever beam structure 1353 and a fourth cantilever beam structure 1354, which are symmetrically distributed at four corners of the supporting plate 130 in the first direction X or the second direction Y. The four cantilever structures are integrated with the fastening region 132, and the four cantilever structures 135 extend from the fastening region 132 to the reinforcing region 131 respectively, and the extending direction of the four cantilever structures forms an included angle with the first direction X or the second direction Y. The included angle is less than or equal to 90 °, that is, the extending direction may be between the first direction X and the second direction Y, or the extending direction may be the first direction X or the second direction Y. For example, as shown in fig. 3, the four cantilever beam structures 135 extend from the fastening region 132 to the reinforcing region 131 along the second direction Y.

In this embodiment, a cantilever structure is disposed at each of four corners of the supporting plate 130, so as to increase the structural stability of the pressure touch pad. Secondly, pass through the cantilever beam structure with pressure sensor and distribute four angles in the backup pad, can also improve pressure detection's homogeneity.

Optionally, as shown in fig. 3, a step 138 is formed at the connection point of the four cantilever beam structures 135 and the fastening region 132, and the step 138 is used for protecting the four cantilever beam structures 135.

The cantilever beam structure forms the step with the junction in fastening area, and the step can protect the cantilever beam structure when the deformation takes place for the difficult rupture of cantilever beam structure.

Optionally, the first connecting portion and the second connecting portion of the flexible connecting arm are respectively disposed close to two different cantilever beam structures arranged along the first direction X. For example, as shown in fig. 3 in conjunction with fig. 2, first connection portion 13312 of first flexible attachment arm 1331 is disposed proximate first cantilevered beam structure 1351 and second connection portion 13313 of first flexible attachment arm 1331 is disposed proximate second cantilevered beam structure 1352. The first connection section 13322 of the second flexible attachment arm 1332 is disposed proximate the third cantilevered beam structure 1353 and the second connection section 13323 of the second flexible attachment arm 1332 is disposed proximate the fourth cantilevered beam structure 1354.

As can be taken from fig. 3, the flexible connection arm is arranged between two cantilever beam structures arranged in the first direction X. For example, first flexible attachment arm 1331 is disposed between first and second

cantilever beam structures

1351 and 1352, and second flexible attachment arm 1332 is disposed between third and fourth

cantilever beam structures

1353 and 1354.

Optionally, the first connection portion 13312 of the first flexible connection arm 1331 and the first connection portion 13322 of the second flexible connection arm 1332 are respectively disposed near two different cantilever beam structures arranged along a diagonal direction of the pressure touch pad 100; alternatively, the first connection portion 13312 of the first flexible connection arm 1331 and the first connection portion 13322 of the second flexible connection arm 1332 are respectively disposed adjacent to two different cantilever beam structures arranged along the second direction. For example, as shown in fig. 3 and fig. 2, the first connection portion 13312 of the first flexible connection arm 1331 is disposed close to the first cantilever beam structure 1351, the first connection portion 13322 of the second flexible connection arm 1332 is disposed close to the third cantilever beam structure 1353, and the first cantilever beam structure 1351 and the third cantilever beam structure 1353 are disposed in a diagonal direction of the pressure touch pad.

Optionally, as shown in fig. 1 and 3, the pressure touch pad further includes: a Flexible Printed Circuit (FPC) 170, the FPC170 electrically connecting the pressure sensor with the Printed Circuit board 110.

Optionally, as shown in fig. 3, the FPC170 is bent, two ends of the FPC are respectively connected to the pressure sensors on the surfaces of the two cantilever structures disposed on the same short side of the supporting plate 130, and the extending portion of the FPC is electrically connected to the printed circuit board 110. For example, as shown in fig. 3, two ends of the FPC170 are respectively connected to the pressure sensors 120 on the lower surfaces of the first and

second cantilever structures

1351 and 1352, and the protruding portions are electrically connected to the pressure sensor connectors 111 disposed on the lower surface of the printed circuit board 110. When receiving pressure, the setting of buckling the shape can reduce the pulling force that FPC deformation produced to protection FPC 170. As shown in fig. 3, the FPC170 has a gap between each of the two flexible connecting arms 133, so that the FPC170 is not affected by the balanced vibration of the two flexible connecting arms 133 when electrically connecting the pressure sensor and the printed circuit board 110.

Optionally, as shown in fig. 3, the lower surface of the printed circuit board 110 may further be provided with a motherboard connector 112 and a keyboard connector 113, wherein the motherboard connector 112 is used for connecting the pressure touch pad 100 and a motherboard (not shown) of the electronic device, and the keyboard connector 112 is used for connecting the pressure touch pad 100 and a keyboard (not shown) of the electronic device. It should be noted that, in the embodiment of the present application, the components on the lower surface of the printed circuit board are not limited, and the components on the lower surface of the printed circuit board 110 are located in the two windowing regions 134.

Optionally, the pressure touch pad 100 further includes: and the damping part 180 is arranged between the printed circuit board and the cantilever beam structure and is used for enabling the cantilever beam structure to deform when the pressure touch pad bears pressure. As shown in fig. 1, the damping member 180 is disposed on the lower surface of the pcb and is fixedly connected to the upper surface of the cantilever beam structure 135.

Alternatively, the damping member 180 may be disposed alongside the pressure sensor 120 on the upper surface of the cantilevered beam structure 135, and the damping member 180 may fill the gap between the upper surface of the cantilevered beam structure 135 and the lower surface of the printed circuit board 110. When a finger presses the pressure touch pad 100, the damping member 180 can deform the cantilever structure 135, so as to drive the pressure sensor 120 to deform.

In this embodiment, through set up damping part between cantilever beam structure and printed circuit board, can make the cantilever beam structure take place deformation to can drive pressure sensor and take place deformation, so that pressure sensor carries out pressure detection.

Alternatively, in one example, the damping member 180 may be a silicone composite material, such as a silicone pad.

The damping member 180 can be used to not only drive the cantilever structure 135 to deform, but also absorb the aftershock generated by the tactile feedback member 150.

Optionally, the hardness of the damping member 180 may be selected to be between 20A and 30A, so as to ensure that the damping member has a certain rigidity, and avoid that the damping member itself is strained when the pressure touch pad 100 is subjected to pressure, which affects the accuracy of pressure detection.

Optionally, the thickness of the damping component 180 may be set between 0.5mm and 0.8mm, which may avoid insufficient strain space of the cantilever structure 135 caused by an excessively small thickness of the damping component 180, and thus may cause the pressure sensor supported by the cantilever structure 135 to fail to perform pressure detection effectively. The problem of inconsistent vibration of the pressure touch pad caused by the overlarge thickness of the damping part 180 can be avoided.

Optionally, as shown in fig. 1, the pressure touch pad 100 further includes: and a protective panel 160 disposed above the printed circuit board 110 for touching and pressing by a finger. Alternatively, the protective panel 160 may also be used as an appearance decoration, typically using glass.

Further, the protection panel 160 may be attached to the printed circuit board 110 by a first adhesive 171.

Alternatively, as shown in fig. 1, the supporting board 130 may be adhered to the printed circuit board 110 by a second glue 172. Specifically, the reinforcing portion 131 of the supporting board 130 and the printed circuit board 110 are adhered together by the second adhesive 172.

Alternatively, the first adhesive 171 and the second adhesive 172 in the embodiment of the present application may be double-sided adhesive, or flexible glue or adhesive pad.

Alternatively, in the present embodiment, the haptic feedback component 150 may be a linear motor, such as an X or Y axis vibrating linear motor. The haptic feedback component 150 may be adhered under the printed circuit board 110, for example, to a lower surface of the printed circuit board 110.

Alternatively, as shown in fig. 3, the fastening area 132 includes a plurality of fastening holes 1321, and the fastening holes 1321 are used for installing fasteners by which the pressure touch pad 100 is fixedly connected with the chassis of the electronic device. The fastening member may be, for example, a fastening nut installed at the fixing hole 1321, and a fastening bolt passing through the fastening nut to be lockingly attached to the chassis of the electronic device.

Fig. 6 shows a schematic exploded view of a pressure touch pad 100 according to yet another embodiment of the present application. The pressure touch pad 100 may be applied to an electronic device. As shown in fig. 6, the pressure touch pad 100 includes: a printed circuit board 110, a pressure sensor 120, a support board 130, a touch controller 140, and a haptic feedback component 150.

A touch electrode layer (not shown) is disposed on an upper surface of the printed circuit board 110, and is configured to sense a touch position of a finger when the finger touches or presses the pressure touch pad 100, and output a corresponding touch sensing signal; the pressure sensor 120 is disposed below the printed circuit board 110, and is configured to deform when a finger presses the pressure touch pad 100, and output a corresponding pressure sensing signal; the supporting board 130 is disposed under the printed circuit board 110, and the supporting board 130 includes a reinforcing region 131, a fastening region 132, and two flexible connecting arms 133, as shown in fig. 6, the two flexible connecting arms 133 are a first flexible connecting arm 1331 and a second flexible connecting arm 1332. The reinforcing section 131 is connected to the fastening section 132 by two flexible connecting arms 133. For example, as shown in fig. 6, two sides of the reinforcing region 131 along the second direction Y are connected to the fastening region 132 via the first flexible connecting arm 1331 and the second flexible connecting arm 1332, respectively. The reinforcing region 131 is fixedly connected to the printed circuit board 110, and the fastening region 132 is used for fixedly connecting to a housing of an electronic device; the touch controller 140 is fixedly mounted below the printed circuit board 110 and electrically connected to the touch electrode layer and the pressure sensor 120, and is configured to receive a touch sensing signal from the touch electrode layer to determine a touch position of a finger on the pressure touch pad 100, and receive a pressure sensing signal from the pressure sensor 120 to determine a pressure applied by the finger; the tactile feedback member 150 is mounted on the lower surface of the printed circuit board 110, in the first direction X, distances between the mounting position of the tactile feedback member 150 and the two long sides of the pressure touch pad 100 are not equal, and the tactile feedback member 150 is electrically connected to the touch controller 140 for performing vibration feedback in response to the pressure applied by the finger.

The pressure sensor 120 may be a resistive pressure sensor, also known as a piezoresistive force sensor. For example, the pressure sensor 120 is a strain gauge pressure sensor. As shown in fig. 6, the pressure sensor 120 may be disposed between the support plate 130 and the printed circuit board 110.

It should be noted that the tactile feedback unit 150 in the embodiment of the present application provides vibration feedback to the user based on the pressure signal detected by the pressure sensor, but the possibility that the tactile feedback unit 150 provides vibration feedback to the user based on other signals is not excluded.

In addition to carrying and supporting the touch electrode layer, the printed circuit board 110 may also carry the electronic components of the pressure touchpad 100, which may include, for example, a touch controller 140 and a haptic feedback component 150. The touch controller 140 may be electrically connected to the touch electrode layer and the pressure sensor 120, and is configured to provide a driving signal to the touch electrode layer for capacitive touch detection, and receive a touch sensing signal and a pressure sensing signal output by the touch electrode layer and the pressure sensor 120 when a finger presses the pressure touch pad 100, and determine finger position information and a pressure applied by the finger based on the touch sensing signal and the pressure sensing signal. And the touch controller 140 may also be coupled to the tactile feedback member 150 and further configured to actuate the tactile feedback member 150 for vibrotactile feedback in response to the detected pressure level. In an embodiment, the touch controller 140 may be a touch chip integrating pressure detection and touch position detection, or may include two separately arranged pressure detection chips for detecting pressure and touch position.

Specifically, in the embodiment of the present application, the supporting plate 130 is used for supporting the printed circuit board 110, and should have a certain strength, so the supporting plate 130 may also be referred to as a reinforcing plate. The supporting plate 130 may include a reinforcing region 131 and a fastening region 132, where the reinforcing region 131 refers to a partial region of the supporting plate 130 for supporting the printed circuit board 110, that is, the reinforcing region 131 is fixedly connected to the lower surface of the printed circuit board 110. For example, the reinforcing region 131 may be bonded to the lower surface of the printed circuit board 110. The fastening area 132 refers to a partial area of the support plate 130 where the support plate 130 is mounted to the electronic device, for example, the fastening area 132 may connect the support plate 130 to a housing of the electronic device. The supporting plate 130 further comprises a flexible connecting arm 133, and the reinforcing region 131 and the fastening region 132 are connected by the flexible connecting arm 133, i.e. the reinforcing region 131 and the fastening region 132 are flexibly connected. The flexible connection may also be referred to as a flexible connection, and thus the flexible connecting arms 133 may also be referred to as flexible arms. The flexible connecting arms 133 in the embodiment of the present application have both a relation of restraining or transmitting vibration and a certain degree of relative displacement. I.e., the flexible connector arm 133 may have a gap with the lower surface of the printed circuit board 110. When the tactile feedback member 150 vibrates, the flexible linkage arms 133 can vibrate up and down within the gap, thereby balancing the vibration of the tactile feedback member 150.

Therefore, according to the pressure touch pad provided by the embodiment of the application, the reinforcing area and the fastening area of the supporting plate are integrally connected through the flexible connecting arm, so that the assembly process of the pressure touch pad can be simplified. And when the touch feedback component vibrates, the vibration can be transmitted through the relative displacement of the flexible connecting arm, so that the vibration generated by the touch feedback component is uniformly distributed at each position of the pressure touch pad, the problem of inconsistent vibration when the touch feedback component is biased can be solved, and the vibration experience of a user is improved.

Alternatively, as shown in fig. 9 to 12, the fastening region 132 is disposed around the reinforcing region 131, two windowed regions 134 are respectively formed between the outermost edges of two sides of the reinforcing region 131 and the fastening region 132 in the second direction Y, and the two flexible connecting arms 133 are respectively disposed in the two windowed regions 134, and the two windowed regions 134 include a first windowed region 1341 and a second windowed region 1342. For example, as shown in fig. 9 to 12, in the second direction Y, a first windowing region 1341 is formed between the outermost edge on the right side of the reinforcing region 131 and the fastening region 132, and a second windowing region 1342 is formed between the outermost edge on the left side of the reinforcing region 131 and the fastening region 132, wherein the first flexible connecting arm 1331 is disposed in the first windowing region 1341, and the second flexible connecting arm 1332 is disposed in the second windowing region 1342.

Alternatively, the two flexible connection arms 133 may be symmetrically disposed in the two window areas 134, for example, the first flexible connection arm 1331 and the second flexible connection arm 1332 are axially symmetric in the second direction Y, that is, after the supporting board 130 is folded along the center line of the supporting board 130 in the second direction Y, the first flexible connection arm 1331 and the second flexible connection arm 1332 can be completely overlapped. For another example, the first flexible connecting arm 1331 and the second flexible connecting arm 1332 are symmetric around the center point of the supporting plate 130, that is, after the first flexible connecting arm 1331 rotates 180 degrees around the center point of the supporting plate 130, it can completely coincide with the second flexible connecting arm 1332.

In this embodiment, the flexible connection arm is disposed in the windowed area between the fastening area and the outermost edge of the reinforcement area, which can destroy the integrity of the reinforcement area as little as possible, thereby solving the problem of inconsistent vibration when the tactile feedback member is biased without affecting the rigidity of the pressure touch pad.

FIG. 7 is a schematic enlarged view of first flexible connecting arm 1331 of FIG. 6. As shown in fig. 7, the first flexible connecting arm 1331 includes a main body portion 13311, a first connecting portion 13312 and a second connecting portion 13313. The main portion 13311 of the first flexible connecting arm 1331 extends along the first direction X, two ends of the main portion 13311 of the first flexible connecting arm 1331 are respectively connected to one end of the first connecting portion 13312 of the first flexible connecting arm 1331 and one end of the second connecting portion 13313 of the first flexible connecting arm 1331, the other end of the first connecting portion 13312 of the first flexible connecting arm 1331 is connected to the reinforcing region 131, and the other end of the second connecting portion 13313 of the first flexible connecting arm 1331 is connected to the fastening region 132.

It should be understood that the first connection portion 13312 in the present application refers to a region extending from one end of the reinforcement region 131 in the direction of the fastening region 132, and the second connection portion 13313 refers to a region extending from one end of the fastening region 132 in the direction of the reinforcement region 131.

Optionally, in an embodiment of the present application, the aspect ratio of the main body portion is greater than or equal to 10.

As shown in fig. 7, the length of the main body part 13311 of the first flexible connecting arm 1331 is the length from arrow 1 to arrow 2. The width of the main portion 13311 of the first flexible connecting arm 1331 is the length from arrow 3 to arrow 4. It should be noted that, the structure and size of the second flexible connecting arm 1332 can refer to the description of the first flexible connecting arm 1331, and for brevity, the description is omitted here.

Setting the aspect ratio of the main body portion of the flexible connecting arm to be greater than or equal to 10 enables the shock tail time (or braking time) of the haptic feedback member to be effectively shortened, making the jarring experience more crisp.

Optionally, in an embodiment of the present application, the width of the main body portion of the flexible connection arm is greater than or equal to 2mm.

Further, in order to ensure that the aspect ratio of the main body portion of the flexible connection arm is greater than or equal to 10, then the length of the main body portion of the flexible connection arm may be greater than or equal to 20mm.

The width of the main body part of the flexible connecting arm is set to be larger than or equal to 2mm, so that the connecting strength between the flexible connecting arm and the reinforcing area or the fastening area can be enhanced, and the connecting part is not easy to break.

The length of the first connection portion 13312 of the first flexible connection arm 1331 in the first direction X is greater than the length of the main body portion 13311 of the first flexible connection arm 1331 in the second direction Y, i.e. the width of the main body portion 13311 of the first flexible connection arm 1331, and similarly, the length of the second connection portion 13313 in the first direction X is greater than the width of the main body portion 13311 of the first flexible connection arm 1331. The structure and size of the second flexible connecting arm 1332 can refer to the description of the first flexible connecting arm 1331, and for brevity, the description is omitted here.

Fig. 8 shows another schematic exploded view of a pressure touch pad 100 according to another embodiment of the present application.

Optionally, as shown in fig. 8, the supporting board 130 is further provided with a cantilever structure 135, and the cantilever structure 135 can be used for supporting the pressure sensor 120 and driving the pressure sensor 120 to deform together when the pressure touch pad 100 bears a pressure.

The cantilever beam structure 135 refers to the reinforcement region 131 opposite to the support plate 130, which is disposed under the printed circuit board 110 in a floating manner. That is, the cantilever beam structure 135 has a gap with the printed circuit board 110. For example, the lower surface of the cantilever structure 135 is flush with the lower surface of the reinforcing region 131, and the thickness of the cantilever structure 135 is smaller than the thickness of the reinforcing region 131, so that a gap is formed between the cantilever structure 135 and the printed circuit board 110. Alternatively, the cantilevered beam structure 135 is used to support the pressure sensor 120, it being understood that the pressure sensor 120 is affixed to an upper surface of the cantilevered beam structure 135. Or the pressure sensor 120 may be affixed to the lower surface of the cantilevered beam structure 135. It should be noted that the lower surface of the cantilever beam structure 135 refers to the surface of the cantilever beam structure 135 away from the printed circuit board 110, and the upper surface of the cantilever beam structure 135 refers to the surface close to the printed circuit board 110.

In the embodiment, the cantilever beam structure for supporting the pressure sensor and the reinforcing plate for supporting the printed circuit board are integrally formed, and an elastic support for supporting the pressure sensor is not required to be additionally arranged, so that the number of components of the pressure touch control plate is reduced, the assembly process is simplified, and the cost is saved.

Optionally, as shown in fig. 8, the supporting board 130 is provided with four cantilever beam structures, including a first cantilever beam structure 1351, a second cantilever beam structure 1352, a third cantilever beam structure 1353 and a fourth cantilever beam structure 1354, the four cantilever beam structures are symmetrically distributed at four corners of the supporting board 130, and four corners of the reinforcing area 131 are recessed in opposite directions to the four corners, respectively, so as to avoid the four cantilever beam structures. The four cantilever beam structures are integrated with the fastening region 132, and the four cantilever beam structures respectively extend from the fastening region 132 to the reinforcing region 131 along the second direction Y.

Those skilled in the art will appreciate that the number of cantilever beam structures is not limited in the embodiments of the present application. For example, six cantilever beam structures may be provided to the support plate, and the six cantilever beam structures may be symmetrically arranged at four corners of the support plate and at central positions of two sides of the support plate extending in the second direction Y.

Alternatively, in the case that the lower surface of the supporting plate 130 is planar, the upper surface of the cantilever beam structure 135 may be flush with the upper surface of the flexible connecting arm 133, that is, the thickness of the cantilever beam structure 135 is the same as the thickness of the flexible connecting arm 133. I.e., the gap between the cantilever beam structure 135 and the printed circuit board 110 is the same as the gap between the flexible link arm 133 and the printed circuit board 110. In other examples, the gap between the cantilever beam structure 135 and the printed circuit board 110 and the gap between the flexible connector arm 133 and the printed circuit board 110 may not be the same. Similarly, the lower surface is a surface away from the printed circuit board 110, and the upper surface is a surface close to the printed circuit board 110.

Optionally, as shown in fig. 8, the pressure touch pad 100 further includes: and a protective panel 160 disposed above the printed circuit board 110 for touching and pressing by a finger. Alternatively, the protective panel 160 may also be used as an appearance decoration, typically using glass or mylar (mylar).

Alternatively, as shown in fig. 8, the supporting board 130 may be adhered to the printed circuit board 110 by a second glue 172. Specifically, the reinforcing region 131 of the supporting board 130 and the printed circuit board 110 are bonded together by the second adhesive 172.

Optionally, in this embodiment of the application, as shown in fig. 8, the pressure touch pad 100 further includes: the damping member 180 is disposed between the printed circuit board 110 and the cantilever structure 135, and is used for deforming the cantilever structure 135 when the pressure touch pad 100 bears a pressure.

Specifically, the damping member 180 may be disposed alongside the pressure sensor 120 on the upper surface of the cantilevered beam structure 135. And the damping member 180 may fill the gap between the upper surface of the cantilevered beam structure 135 and the lower surface of the printed circuit board 110. When a finger presses the pressure touch pad 100, the damping member 180 can deform the cantilever structure 135, so as to drive the pressure sensor 120 to deform.

In this embodiment, damping part is arranged between the cantilever beam structure and the printed circuit board, so that the cantilever beam structure is deformed, and the pressure sensor is driven to deform, so that the pressure sensor performs pressure detection.

Alternatively, in one example, the damping member 180 may be a silicone composite, such as a silicone pad. In other examples, the damping member 180 may be a spring.

The damping member 180 can be used to not only drive the cantilever beam structure 135 to deform, but also absorb the aftershock generated by the tactile feedback member 150.

Optionally, the thickness of the damping component 180 may be set between 0.5mm and 0.8mm, which may avoid that the strain space of the cantilever structure 135 is insufficient due to an excessively small thickness of the damping component 180, and thus the pressure sensor supported by the cantilever structure 135 cannot effectively perform pressure detection. The problem of inconsistent vibration of the pressure touch pad caused by overlarge thickness of the damping part 180 can be avoided.

Alternatively, in the present embodiment, the haptic feedback component 150 may be a linear motor, for example, an X or Y axis vibrating linear motor. Haptic feedback component 150 may also be a piezoceramic wafer or the like. Alternatively, the haptic feedback component 150 may be another suitable actuator. The haptic feedback component 150 may be adhered underneath the printed circuit board 110, for example, to a lower surface of the printed circuit board 110.

With continued reference to fig. 8, the reinforced region 131 further includes a haptic feedback member avoidance hole 136 for avoiding the haptic feedback member 150. In the first direction X, the distances from the haptic feedback member avoidance hole 136 to the two long sides of the support plate 130 are unequal, so that the distances from the mounting position where the haptic feedback member 150 is mounted on the lower surface of the printed circuit board 110 through the haptic feedback member avoidance hole 136 to the two long sides of the pressure touch pad 100 are unequal. That is, the haptic feedback member 150 is offset toward one long side of the pressure touch pad 100 with respect to the center point of the pressure touch pad 100. For example, in fig. 8, the distance L1 from the center point of the haptic feedback member avoidance hole 136 to the first long side of the support plate 130 and the distance L2 from the center point to the second long side of the support plate 130 are not equal.

As shown in fig. 8, the reinforcement area 131 may further include an avoidance hole 137, the avoidance hole 137 may be located in a middle region of the reinforcement area, and the avoidance hole 137 may be used to avoid a Near Field Communication (NFC) chip, so as to ensure that a space of the pressure touch pad 100 is reasonably utilized, so as to increase application of the pressure touch pad 100. The avoiding hole 137 may also avoid the touch controller 140, so that the touch controller 140 is fixedly mounted on the lower surface of the printed circuit board through the avoiding hole 137.

Alternatively, as shown in fig. 8, the pressure sensor 120 may be electrically connected to the Printed Circuit board 110 through a Flexible Printed Circuit (FPC) 170 of the pressure sensor. That is, the pressure-induced signal detected by the pressure sensor 120 can be transmitted to the printed circuit board 110 through the FPC170 of the pressure sensor, so that the touch controller 140 drives the haptic feedback part 150 to vibrate after receiving the pressure-induced signal.

Fig. 9-12 show various schematic top views of a support plate 130 provided in accordance with yet another embodiment of the present application.

Specifically, as shown in fig. 9 to 12, the supporting plate 130 includes a reinforcing region 131, a fastening region 132, and two flexible connecting arms 133, the two flexible connecting arms 133 include a first flexible connecting arm 1331 and a second flexible connecting arm 1332, a second windowing region 1342 is formed between the outermost edge of the left side of the reinforcing region 131 and the fastening region 132, and a first windowing region 1341 is formed between the outermost edge of the right side of the reinforcing region 131 and the fastening region 132, and the first flexible connecting arm 1331 and the second flexible connecting arm 1332 are symmetrically disposed in the first windowing region 1341 and the second windowing region 1342, respectively.

Similar to fig. 7, the first flexible connection arm 1331 in fig. 9 to 12 includes a main body portion 13311, a first connection portion 13312 and a second connection portion 13313, two ends of the main body portion 13311 of the first flexible connection arm 1331 are respectively connected to one end of the first connection portion 13312 of the first flexible connection arm 1331 and one end of the second connection portion 13313 of the first flexible connection arm 1331, the other end of the first connection portion 13312 of the first flexible connection arm 1331 is connected to the reinforcement area 131, and the other end of the second connection portion 13313 of the first flexible connection arm 1331 is connected to the fastening area 132. The second flexible connection arm 1332 comprises a main body portion 13321, a first connection portion 13322 and a second connection portion 13323, two ends of the main body portion 13321 of the second flexible connection arm 1332 are respectively connected to one end of the first connection portion 13322 of the second flexible connection arm 1332 and one end of the second connection portion 13323 of the second flexible connection arm 1332, the other end of the first connection portion 13322 of the second flexible connection arm 1332 is connected to the reinforcing region 131, and the other end of the second connection portion 13323 of the second flexible connection arm 1332 is connected to the fastening region 132.

Optionally, the first connection portion and the second connection portion are respectively disposed near two different cantilever beam structures arranged along the first direction X. For example, as shown in fig. 9 and 6, first connection portion 13312 of first flexible attachment arm 1331 is disposed proximate first cantilevered beam structure 1351 and second connection portion 13313 of first flexible attachment arm 1331 is disposed proximate second cantilevered beam structure 1352. The first connection section 13322 of the second flexible attachment arm 1332 is disposed proximate the fourth cantilevered beam structure 1354 and the second connection section 13323 of the second flexible attachment arm 1332 is disposed proximate the third cantilevered beam structure 1353. As another example, as shown in fig. 10 and 12, the first connection portion 13312 of the first flexible attachment arm 1331 is disposed proximate to the first cantilevered beam structure 1351 and the second connection portion 13313 of the first flexible attachment arm 1331 is disposed proximate to the second cantilevered beam structure 1352. First connection portion 13322 of second flexible attachment arm 1332 is disposed proximate third cantilevered beam structure 1353 and second connection portion 13323 of second flexible attachment arm 1332 is disposed proximate fourth cantilevered beam structure 1354.

As can also be seen in fig. 9 to 12, the flexible connecting arm is provided between two cantilever beam structures arranged along the first direction X. For example, a first flexible attachment arm 1331 is disposed between first and second

cantilevered beam structures

1351 and 1352, and a second flexible attachment arm 1332 is disposed between third and fourth

cantilevered beam structures

1353 and 1354.

Optionally, in the second direction, a distance from an edge of the main body portion of the flexible connecting arm close to the reinforcement area to an inner side edge of the fastening area is smaller than a distance from an edge of the cantilever beam structure close to the reinforcement area to the inner side edge of the fastening area. Taking the right side in fig. 9 as an example, in the second direction Y, a distance L3 from the edge of the main body portion 13311 of the first flexible connecting arm 1331 close to the reinforcing region 131 to the inner side edge of the fastening region 132 is smaller than a distance L4 from the edge of the second cantilever beam structure 1352 close to the reinforcing region 131 to the inner side edge of the fastening region 132. The arrangement is such that the problem of inconsistent vibration when the tactile feedback member 150 is biased is solved under the condition of improving the rigidity of the pressure touch pad 100.

Alternatively, as shown in fig. 9 and 11, the first connection portion 13312 of the first flexible connection arm 1331 and the first connection portion 13322 of the second flexible connection arm 1332 are respectively disposed near two different cantilever beam structures arranged along the second direction Y; the

second connection portions

13313 and 13323 of the first and second

flexible connection arms

1331 and 1332 are respectively disposed adjacent to two other different cantilever beam structures arranged along the second direction Y. For example, first and fourth

cantilever beam structures

1351 and 1354 are arranged along the second direction Y, and second and third

cantilever beam structures

1352 and 1353 are arranged along the second direction Y, with the first connection portion 13312 of the first flexible connection arm 1331 being disposed proximate to the first cantilever beam structure 1351, the first connection portion 13322 of the second flexible connection arm 1332 being disposed proximate to the fourth cantilever beam structure 1354, and the second connection portion 13313 of the first flexible connection arm 1331 being disposed proximate to the second cantilever beam structure 1352, and the second connection portion 13323 of the second flexible connection arm 1332 being disposed proximate to the third cantilever beam structure 1353.

Alternatively, as shown in fig. 10 and 12, the

first connection portions

13312 and 13322 of the first and second

flexible connection arms

1331 and 1332 are respectively disposed close to two different cantilever beam structures arranged along a diagonal direction of the pressure touch pad 100; the

second connection portions

13313 and 13323 of the first and second

flexible connection arms

1331 and 1332 are respectively disposed near two different cantilever beam structures arranged along the other diagonal direction of the pressure touch pad 100. For example, the first and third

cantilever beam structures

1351 and 1353 are arranged along a diagonal of the pressure touch pad 100, and the second and fourth

cantilever beam structures

1352 and 1354 are arranged along another diagonal of the pressure touch pad 100, the first connection portion 13312 of the first flexible connection arm 1331 is disposed proximate to the first cantilever beam structure 1351, the first connection portion 13322 of the second flexible connection arm 1332 is disposed proximate to the third cantilever beam structure 1353, and the second connection portion 13313 of the first flexible connection arm 1331 is disposed proximate to the second cantilever beam structure 1352, and the second connection portion 13323 of the second flexible connection arm 1332 is disposed proximate to the fourth cantilever beam structure 1354.

Alternatively, as shown in fig. 9 and 10, the projected area of the fastening area 132 projected onto the plane of the protection panel surrounds the protection panel (not shown in the figure, and is located right above the area surrounded by the dotted line in the figure), and the area of the projected area is larger than that of the protection panel.

Alternatively, in the embodiment shown in fig. 9 and 10, in the first direction, the distance from the outermost edge of the reinforcing region to the outer edge of the plane where the protection panel projects on the support plate is greater than 0; in the second direction, the distance from the outermost edge of the reinforcing area to the outer edge of the protection panel projected on the support plate is greater than 0. Taking fig. 9 as an example, in the first direction X, the distance from the outermost edge of the reinforcing area 131 to the outer edge of the plane where the protection panel projects on the support plate 130 is L5, L5=3mm, and in the second direction Y, the distance from the outermost edge of the reinforcing area 131 to the outer edge of the protection panel projects on the support plate 130 is L6, L6=7.05mm. In this case, the rigidity of the pressure touch pad 100 is maximized while the fastening area 132 is securely connected to the housing of the electronic device.

Alternatively, as shown in fig. 11 and 12, the projected area of the fastening area 132 projected onto the plane of the protection panel is located in the protection panel (not shown in the figure, and located right above the area surrounded by the dotted line in the figure), the fastening area 132 surrounds the reinforcing area 131, and the two flexible connecting arms 133 are connected together through the fastening area 132.

Alternatively, in the embodiment shown in fig. 11 and 12, in the first direction, the distance from the outermost edge of the reinforcing region to the outer edge of the protective panel projected on the plane of the support plate is greater than 0 and greater than the width of the fastening region in the first direction X; in the second direction, the distance from the outermost edge of the reinforcing area to the outer edge of the protection panel projected on the support plate is greater than 0 and greater than the width of the fastening area in the second direction Y. Taking fig. 11 as an example, in the first direction X, the distance from the outermost edge of the reinforcing region 131 to the outer edge of the plane where the protection panel projects on the support plate 130 is L7, L7=8.5mm, the width of the fastening region 132 in the first direction X is W1, L7 is greater than W1, in the second direction Y, the distance from the outermost edge of the reinforcing region 131 to the outer edge of the support plate 130 projects on the protection panel is L8, L8=12.55mm, and the width of the fastening region 132 in the second direction Y is W2, L8 is greater than W2. In this case, the fixing area 132 is advantageously fixedly connected to the housing of the electronic device while ensuring the rigidity of the pressure touch pad 100.

Alternatively, as shown in fig. 9 to 12, in the first direction X or the second direction Y, the distance from the outermost edge of the reinforcing region 131 to the outer edge of the plane where the protection panel projects on the support plate 130 is greater than the gap between the outermost edge of the reinforcing region 131 and the inner edge of the fastening region. For example, as shown in fig. 9 and 10, L5 is equal to the sum of the size of the windowed area between the reinforcing area 131 and the fastening area 132 and the width of a part of the fastening area in the first direction X. In the second direction Y, L6 is equal to the sum of the size of the windowed area between the reinforcing area 131 and the fastening area 132 and the width of a part of the fastening area. As another example, as shown in fig. 11 and 12, in the first direction X, L7 is equal to the sum of the size of the windowed area between the reinforcing area 131 and the fastening area 132 and the width of the entire fastening area. In the second direction Y, L8 is equal to the sum of the size of the windowed area between the reinforcing area 131 and the fastening area 132 and the width of the entire fastening area.

Optionally, in this embodiment, the extension length of the cantilever beam structure is 12.95mm, and the width of the cantilever beam structure is 8.5mm. Taking the first cantilever structure 1351 in fig. 9 as an example, the first cantilever structure 1351 extends along a length L9 shown in the figure, and the first cantilever structure 1351 has a width L10 shown in the figure. By such an arrangement, the sensitivity of detection of the pressure sensor can be improved.

It is mentioned above that the flexible connection arm 133 and the printed circuit board 110 have a gap therebetween, and the gap may have a size ranging from 0.2mm to 1mm, and further, the gap may have a size ranging from 0.6mm to 0.7mm. The direct clearance of the flexible link arm 133 from the printed circuit board 110 is within this range of values to better balance the vibration effects of the haptic feedback component 150.

Alternatively, as shown in fig. 9 to 12, a fastening point is provided at a fastening region connected to the root of the cantilever structure, so that the fastening region is fixedly connected to the chassis of the electronic device at the fastening point while reusing the fastening point as a fixed end of the cantilever structure. The free end of the cantilever structure is adapted to deform along with the pressure sensor.

Optionally, as shown in fig. 13, another embodiment of the present application further provides an electronic device 10, which includes a chassis 200 and the pressure touch pad 100 in the above-described various embodiments, wherein the chassis 200 is fixedly connected to the fastening area 132 of the pressure touch pad 100.

The chassis 200 is used to carry internal components of the electronic device 10, such as a battery assembly, a motherboard, and the like.

Optionally, the chassis 200 is lockingly attached to the fastening region 132. As shown in fig. 13, the chassis 200 is provided with a groove 210, the groove 210 can completely accommodate the pressure touch pad 100, the bottom surface 220 of the groove is an assembly surface of the chassis, the bottom surface 220 is provided with a mounting hole 221, a fixing hole 1321 is provided at a corresponding position of the fastening area 132 of the support plate 130 in the pressure touch pad 100, and the support plate 130 can be mounted on the chassis 200 of the electronic device 10 by a fastening member 400, for example, a fastening nut, so as to fix the pressure touch pad 100 on the chassis 200 of the electronic device 10.

Alternatively, the housing 200 and the fastening area 132 may be fixedly connected by riveting or laser spot welding. The fixing manner of the chassis and the fastening area 132 is not limited in the embodiments of the present application.

It should be noted that fig. 13 only shows one possible housing, and those skilled in the art will understand that a suitable housing can be designed according to the pressure touch pad 100 provided in the above embodiments.

FIG. 14 shows two schematic positions of a haptic feedback component in a pressure touchpad. As shown in fig. 14, the haptic feedback component may be placed at the geometric center of the pressure touchpad, position 1; the haptic feedback component can also be located at a position offset from the geometric center of the pressure touchpad to one long side of the pressure touchpad, i.e., position 2. For the pressure touch pad with the tactile feedback part arranged at the position 1, the flexible connecting arm is not arranged, the vibration consistency is better, and the test result is shown in table 1. Specifically, the pressure touch pad in fig. 14 may be divided into 9 areas according to the upper, middle, lower, left, middle, right, and the acceleration G of each of the 9 areas and the average, standard deviation, and consistency of the 9 areas are obtained.

TABLE 1

For the pressure touch pad with the tactile feedback component arranged at the position 2, the flexible connecting arm is not arranged, the vibration consistency is poor, and the test result is shown in table 2. Specifically, the pressure touch pad in fig. 14 may be divided into 9 areas according to the upper, middle, lower, left, middle, right, and the acceleration G of each of the 9 areas and the average, standard deviation, and consistency of the 9 areas are obtained.

TABLE 2

For the pressure touch pad with the tactile feedback component disposed at position 2, the flexible connecting arm in the above embodiment is disposed, and the vibration consistency is better, and the test results are shown in table 3. Specifically, the pressure touch pad in fig. 14 may be divided into 9 areas according to the upper, middle, lower, left, middle, right, and the acceleration G of each of the 9 areas and the average, standard deviation, and consistency of the 9 areas are obtained.

TABLE 3

As can be seen from tables 1 to 3, the tactile feedback component is disposed at the position 2, and the vibration uniformity of the pressure touch pad provided with the flexible connecting arm of the above embodiment is close to or even better than the vibration uniformity of the pressure touch pad provided with the tactile feedback component at the position 1 and not provided with the flexible connecting arm, and after multiple verification, the vibration uniformity of the pressure touch pad adopting the embodiment of the present application can reach within 5%.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A pressure touch pad, comprising: the touch control device comprises a printed circuit board, a pressure sensor, a support plate, a touch controller and a tactile feedback component;

the upper surface of the printed circuit board is provided with a touch electrode layer, and the touch electrode layer is used for sensing the touch position of a finger when the finger touches or presses the pressure touch pad and outputting a corresponding touch induction signal;

the pressure sensor is arranged below the printed circuit board and used for generating deformation when the finger presses the pressure touch pad and outputting a corresponding pressure sensing signal;

the supporting plate is arranged below the printed circuit board and comprises a reinforcing area, a fastening area and two flexible connecting arms, two sides of the reinforcing area are respectively connected with the fastening area through the two flexible connecting arms, the reinforcing area is fixedly connected with the printed circuit board, and the fastening area is used for being fixedly connected with a shell of electronic equipment;

the touch controller is fixedly arranged below the printed circuit board, electrically connected with the touch electrode layer and the pressure sensor, and used for receiving the touch sensing signal from the touch electrode layer to determine the touch position of the finger on the pressure touch pad and receiving the pressure sensing signal from the pressure sensor to determine the pressure applied by the finger;

the touch feedback component is arranged on the lower surface of the printed circuit board, the distances from the installation position of the touch feedback component to the two long edges of the pressure touch pad are unequal in a first direction, and the touch feedback component is electrically connected with the touch controller and used for responding the pressure applied by the fingers to perform vibration feedback;

the reinforcement area comprises a tactile feedback component avoiding hole, and the tactile feedback component avoiding hole is used for avoiding the tactile feedback component;

the first direction is a short side direction of the pressure touch pad.

2. The pressure trackpad of claim 1, wherein there is a gap between the two flexible arms and the printed circuit board, the two flexible arms being configured to balance the vibration of the haptic feedback member.

3. The pressure touch pad according to claim 2, wherein the fastening region surrounds the reinforcing region, and two windowed areas are respectively formed between the outermost edges of two sides of the reinforcing region and the fastening region in the second direction, and the two flexible connecting arms are respectively disposed in the two windowed areas;

the second direction is a long side direction of the pressure touch pad.

4. The pressure trackpad of claim 3, wherein the two windowed regions include a first windowed region and a second windowed region, the second windowed region having an area greater than the area of the first windowed region.

5. The pressure trackpad of claim 3, wherein the area of the reinforcement area is smaller than the sum of the areas of the two windowed areas, and the two flexible connecting arms are respectively located on both sides of the haptic feedback member and respectively located near the short sides of the support plate.

6. The pressure trackpad of claim 3, wherein a haptic feedback member avoidance hole is provided in the reinforcement region for avoiding the haptic feedback member, and the reinforcement region is included between the periphery of the haptic feedback member avoidance hole and the windowed region.

7. The pressure touch pad according to claim 3, wherein each of the two flexible connecting arms comprises a main body portion, a first connecting portion and a second connecting portion, the main body portion extends along the first direction, two ends of the main body portion are respectively connected to one end of the first connecting portion and one end of the second connecting portion, the other end of the first connecting portion is connected to the reinforcing area, and the other end of the second connecting portion is connected to the fastening area.

8. The pressure trackpad of claim 7, wherein the body portion is provided with a widened portion, the body portion having an aspect ratio greater than or equal to 10; or, the main body part is a uniform long strip, and the length-width ratio of the main body part is greater than or equal to 10.

9. The pressure trackpad of claim 8, wherein the width of the body portion is greater than or equal to 1.5mm.

10. The pressure touchpad as claimed in claim 7, wherein the support plate is provided with a cantilever beam structure for supporting the pressure sensor and causing the pressure sensor to deform together when the pressure touchpad is subjected to pressure.

11. The pressure touch pad of claim 10, wherein the supporting plate is provided with four cantilever beam structures symmetrically distributed at four corners of the supporting plate in the first direction or the second direction, the four cantilever beam structures extending from the fastening area to the reinforcing area and having an included angle with the first direction or the second direction;

the second direction is a long side direction of the pressure touch pad.

12. The pressure trackpad of claim 11, wherein the connection of the four cantilevered beam structures to the fastening area forms a step for protecting the four cantilevered beam structures.

13. The pressure trackpad of claim 12, wherein the two first connecting portions of the two flexible connecting arms are respectively disposed adjacent to two different cantilever beam structures arranged along a diagonal direction of the pressure trackpad; or, the two first connecting portions of the two flexible connecting arms are respectively arranged close to two different cantilever beam structures arranged along the second direction.

14. The pressure trackpad of claim 10, further comprising:

and the flexible printed circuit is used for electrically connecting the pressure sensor with the printed circuit board.

15. The pressure touch pad according to claim 14, wherein the flexible printed circuit is bent, two ends of the flexible printed circuit are respectively connected to the pressure sensors on the surfaces of the two cantilever structures disposed on the same short side of the supporting plate, and the extending portion of the flexible printed circuit is electrically connected to the printed circuit board.

16. The pressure trackpad of claim 3, further comprising:

and the protective panel is arranged above the printed circuit board and used for touching and pressing the fingers.

17. The pressure trackpad of any one of claims 10 to 13, wherein a fastening point is provided at the fastening region connected to the root of the cantilevered beam structure such that the fastening region is fixedly connected to the chassis at the fastening point.

18. An electronic device, comprising a chassis and the pressure touch pad of any one of claims 1 to 17, wherein the chassis is fixedly connected to the fastening area.