Touchpad and electronic device

Abstract

The present disclosure provides a touchpad and an electronic device, and relates to the technical field of touch control. The touchpad comprises a cover plate, a carrier arranged on a first side of the cover plate for carrying and conducting electronic elements, the first side being a side facing away from a use surface of the cover plate, a controller and a touch component arranged on the carrier, the touch component enabling the touchpad to generate a touch signal in response to a touch operation of a target operating body on the use surface; wherein the touchpad is further provided with a pressure sensing component in signal connection with the controller, the controller being capable of obtaining a pressure detection signal generated by the pressure sensing component in response to a target trigger operation, and controlling the touchpad to execute a target function in response to the target trigger operation in the case that the pressure detection signal is greater than a target threshold, the target trigger operation being at least part of the touch operation; the pressure detection signal being derived from sensing data of the pressure sensing component or a capacitance signal generated by a structural form change of the pressure sensing component.

Description

Technical Field

[0001] This disclosure relates to the field of touch technology, and more particularly to a touchpad and an electronic device. Background Technology

[0002] Currently, a touchpad is a device that detects user pressing actions through physical buttons, executes confirmations, implements left and right button functions, and brings up menus.

[0003] In existing technologies, after a user presses the switch, the conductor impedance increases due to excessive thickness of the solder pad film on the pressed dome, oxidation of the copper layer surface at the pressed location on the circuit board, and insufficient rigidity of the linkage structure / mechanical fatigue. As a result, the dome and the pressed location on the circuit board cannot make sufficient contact after pressing, leading to an increase in the pressure or stroke required to trigger conduction. Since the touchpad only has 0 and 1 touch states and no intermediate state is defined, the impedance level after a predetermined test pressure will increase due to the above factors and will not drop to near 0 as expected, failing to meet the preset conduction conditions of the touchpad. This causes the touchpad triggering function to fail, resulting in the scrapping of related materials and significant material waste.

[0004] Therefore, how to provide a touchpad that avoids touch failure caused by problems such as increased impedance has become an urgent problem to be solved. Utility Model Content

[0005] This disclosure provides a touchpad and an electronic device, the technical solution of which is as follows:

[0006] To solve the above-mentioned technical problems, this disclosure provides a touchpad, including: a cover plate;

[0007] A carrier for carrying and conducting electronic components is disposed on the first side of the cover plate, the first side being the side facing away from the usable surface of the cover plate;

[0008] A controller and a touch component are disposed on the carrier, the touch component enabling the touchpad to generate touch signals in response to a touch operation performed by a target operating body on the use surface;

[0009] The touchpad is further provided with a pressure-sensitive component that is signal-connected to the controller. The controller can obtain the pressure detection signal generated by the pressure-sensitive component in response to the target trigger operation, and when the pressure detection signal is greater than the target threshold, control the touchpad to perform the target function in response to the target trigger operation. The target trigger operation is at least a part of the touch operation.

[0010] The pressure detection signal comes from the sensing data of the pressure-sensitive component or from the capacitance signal generated by the structural changes of the pressure-sensitive component.

[0011] In some embodiments, the pressure-sensitive component is at least one pressure sensor disposed on the second side of the carrier facing away from the cover plate, and the pressure detection signal is at least one of a voltage signal, a current signal, or a frequency signal from the pressure sensor that can characterize the pressure value;

[0012] A connecting layer is provided between the cover plate and the carrier, and the cover plate and the carrier can deform synchronously through the connecting layer;

[0013] The connecting layer includes a first region corresponding to the pressure sensor and a second region outside the first region, wherein the first region and the second region are made of different materials.

[0014] In some embodiments, the first region is made of pressure-sensitive adhesive and the second region is made of UV adhesive;

[0015] or,

[0016] The bonding layer is made of UV adhesive, and the first area is a perforated area.

[0017] In some embodiments, the touchpad further includes a reinforcing structure disposed on a second side of the carrier, the reinforcing structure being used to increase the rigidity of the carrier.

[0018] In some embodiments, the reinforcing structure comprises at least two reinforcing ribs disposed on the second side of the carrier, the two reinforcing ribs being disposed at the two long edge edges of the carrier respectively, and the extending direction of the reinforcing ribs being the same as the extending direction of the long edge of the carrier.

[0019] In some embodiments, there is a gap between the cover plate and the carrier, the pressure-sensitive component is a push switch disposed in the gap, and the pressure detection signal comes from the capacitance signal generated by the structural change of the push switch.

[0020] In the operating system environment, the target component of the electronic device can directly read the capacitance signal from the controller.

[0021] In some embodiments, a capacitance detection circuit is formed between the push switch and the controller. When pressure is applied to the push switch, the capacitance detection circuit can detect a capacitance change signal, thereby determining whether the push switch is triggered.

[0022] In some embodiments, the capacitance detection circuit includes:

[0023] A first capacitor and a second capacitor, wherein the first terminal of the first capacitor is connected to the carrier and the second terminal is connected to the controller, and the first terminal of the second capacitor is connected to the carrier and the second terminal is connected to the push switch;

[0024] When the push switch is not triggered, the second capacitor is in an open circuit state with the controller, and the controller can detect the reference capacitance presented by the first capacitor;

[0025] When the push switch is triggered, the second capacitor and the first capacitor are connected in parallel, and the capacitance value detected by the controller is different from the reference capacitor.

[0026] On the other hand, this application also provides an electronic device, including a device body and a touchpad disposed on the device body, the touchpad comprising:

[0027] Cover plate;

[0028] A carrier for carrying and conducting electronic components is disposed on the first side of the cover plate, the first side being the side facing away from the usable surface of the cover plate;

[0029] A controller and a touch component are disposed on the carrier, the touch component enabling the touchpad to generate touch signals in response to a touch operation performed by a target operating body on the use surface;

[0030] The touchpad is further provided with a pressure-sensitive component that is signal-connected to the controller. The controller can obtain the pressure detection signal generated by the pressure-sensitive component in response to the target trigger operation, and when the pressure detection signal is greater than the target threshold, it controls the touchpad to perform the target function in response to the target trigger operation. The target trigger operation is at least a part of the touch operation.

[0031] The pressure-sensitive component is at least one pressure sensor disposed on the second side of the carrier facing away from the cover plate, and the pressure detection signal is at least one of a voltage signal, a current signal, or a frequency signal that can characterize the pressure value from the pressure sensor.

[0032] A connecting layer is provided between the cover plate and the carrier, and the cover plate and the carrier can deform synchronously through the connecting layer;

[0033] The connecting layer includes a first region corresponding to the pressure sensor and a second region outside the first region, wherein the first region and the second region are made of different materials.

[0034] In some embodiments, the device body includes a first body and a second body rotatably connected, the first body being provided with a display device, and the touch panel being provided on the second body;

[0035] The first region is made of pressure-sensitive adhesive, and the second region is made of UV adhesive;

[0036] or,

[0037] The bonding layer is made of UV adhesive, and the first area is a perforated area.

[0038] The above description is only an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, the preferred embodiments of this disclosure are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A side view of a touchpad provided in an embodiment of this disclosure;

[0041] Figure 2 A bottom view of a carrier provided for an embodiment of this disclosure;

[0042] Figure 3 This is a schematic diagram of the structure of a touchpad provided in an embodiment of the present disclosure;

[0043] Figure 4 A circuit diagram of a touchpad provided in an embodiment of this disclosure;

[0044] Figure 5 This invention provides an embodiment of a touchpad with a full-surface touch signal distribution diagram after the first area of ​​the connecting layer is hollowed out or filled with pressure-sensitive adhesive.

[0045] Figure 6 A comparison diagram of the sensitivity of the pressure sensor before and after the first area of ​​the connecting layer of the touch panel is hollowed out or filled with pressure-sensitive adhesive, according to an embodiment of this disclosure;

[0046] Figure 7 An impedance-variable resistance relationship diagram is provided for an embodiment of this disclosure.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Touchpad; 11. Cover plate; 12. Carrier; 131. Pressure sensor; 132. Press switch; 14. Connecting layer; 141. First area; 142. Second area; 15. Reinforcing structure; 151. Reinforcing rib; 16. Capacitor detection circuit; 161. First capacitor; 162. Second capacitor. Detailed Implementation

[0049] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0050] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0051] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0053] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0054] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0055] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0056] First aspect

[0057] like Figures 1 to 3 As shown, this application provides a touchpad 1, including:

[0058] Cover plate 11;

[0059] A carrier 12 for carrying and conducting electronic components is disposed on the first side of the cover plate 11, the first side being the side facing away from the usable surface of the cover plate 11;

[0060] The controller and touch component are disposed on the carrier 12, and the touch component enables the touch panel 1 to generate touch signals in response to touch operations performed by a target operating body on the use surface;

[0061] The touchpad 1 is further provided with a pressure-sensitive component that is connected to the controller. The controller can obtain the pressure detection signal generated by the pressure-sensitive component in response to the touch operation, and when the pressure detection signal is greater than a target threshold, it controls the touchpad 1 to perform a target function that responds to a target trigger operation. The target trigger operation is at least a part of the touch operation.

[0062] The pressure detection signal comes from the sensing data of the pressure-sensitive component or from the capacitance signal generated by the structural changes of the pressure-sensitive component.

[0063] In this embodiment, the cover plate 11 can be a glass plate; the carrier 12 can be a PCBA, which is used to carry and conduct electronic components; the controller can be a touch chip, a pressure chip, or an independent SOC / MCU, etc.; the touch component can be a touch sensing electrode, a pressure sensor, or may also include a touch chip; the target operating body can be a human hand or a stylus.

[0064] In this embodiment, the touch component includes a pressure-sensitive component, and may also include other sensing components. The pressure-sensitive component can be a pressure sensor. A target triggering operation performed by the target object on the usable surface of the cover plate 11 can cause the pressure-sensitive component to detect a pressure signal. The pressure-sensitive component can convert the pressure signal into an electrical signal, i.e., a pressure detection signal. The pressure detection signal typically includes an output in the form of voltage, current, or frequency. Alternatively, the pressure-sensitive component can be a device that achieves pressure detection through a capacitive signal or a level signal generated by the deformation of a wavelet under pressure. In this case, the pressure detection signal of the pressure-sensitive component comes from the capacitive signal or level signal generated by the deformation of the wavelet under pressure.

[0065] In this embodiment, a touch operation is any operation involving contact with a touch component. A target trigger operation is at least a part of a touch operation. A target trigger operation can be a simple press or a touch trajectory combined with a press operation. Target trigger operations can include operations such as selection, left-click, right-click, activating a shortcut key, and configuring system parameters. Touch operations also include simple touch operations without generating pressure, i.e., operations that have a touch signal.

[0066] In this embodiment, the cover plate 11 has a usable surface side and a first side disposed opposite to each other. The usable surface of the cover plate 11 can be touched by a target operating body. A carrier 12 is provided on the first side of the cover plate 11. The carrier 12 carries electronic components including a controller (not shown in the figure) and a touch component (not shown in the figure). The controller and the touch component can be connected and made conductive through the carrier 12. When the target operating body touches the usable surface of the cover plate 11, the touch component can generate a touch signal. The touch component can transmit the touch signal to the controller. The controller can control the touchpad 1 to perform the function corresponding to the touch signal according to the touch signal.

[0067] In the touchpad 1 provided in this application embodiment, the touchpad 1 includes a cover plate 11, a carrier 12, a controller, and a pressure-sensitive component. The target operating body can perform a touch operation on the use surface of the cover plate 11. After the target operating body performs a target trigger operation on the use surface, the pressure-sensitive component can obtain a pressure sensing signal generated for the target trigger operation. The controller is connected to the pressure-sensitive component to receive the pressure detection signal and compare the pressure detection signal with a target threshold. When the pressure sensing signal is greater than the target threshold, the controller controls the touchpad 1 to perform the target function of the target trigger operation. The touchpad 1 determines whether it is triggered by sensing data or by the capacitance signal generated by the structural changes of the pressure-sensitive component, thereby avoiding the problem of touch failure caused by increased impedance in related technologies, and thus improving the yield and service life of the touchpad 1.

[0068] like Figure 1 As shown in the embodiment of this application, the pressure-sensitive component is at least one pressure sensor 131 disposed on the second side of the carrier 12 facing away from the cover plate 11, and the pressure detection signal is at least one of a voltage signal, a current signal, or a frequency signal that can characterize the pressure value from the pressure sensor 131.

[0069] A connecting layer 14 is provided between the cover plate 11 and the carrier 12, and the cover plate 11 and the carrier 12 can achieve synchronous deformation through the connecting layer 14;

[0070] The connecting layer 14 includes a first region 141 corresponding to the pressure sensor 131 and a second region 142 outside the first region 141, wherein the first region 141 and the second region 142 are made of different materials.

[0071] In one embodiment of this application, the connecting layer 14 may be an adhesive layer for bonding the cover plate 11 and the carrier 12.

[0072] In this embodiment, the touchpad 1 includes a cover plate 11, a connecting layer 14, and a carrier 12 stacked sequentially. The connecting layer 14 connects the cover plate 11 and the carrier 12 so that the cover plate 11, the connecting layer 14, and the carrier 12 can deform synchronously, thereby ensuring the consistency of the touchpad 1 signal, avoiding the warping problem of the touchpad 1, avoiding the influence of air bubbles, and also improving the sensitivity and accuracy of the pressure sensor 131, thus enhancing the user experience.

[0073] In this embodiment, the connecting layer 14 between the cover plate 11 and the carrier 12 includes a first region 141 and a second region 142. The first region 141 corresponds to the pressure sensor 131, and the second region 142 does not correspond to any other region of the pressure sensor 131. The material of the first region 141 is different from that of the second region 142, so that the material of the first region 141 can be set to a more sensitive material, thereby further improving the sensitivity and accuracy of the pressure sensor 131.

[0074] like Figure 1 As shown in the embodiment of this application, the first region 141 is made of pressure-sensitive adhesive, and the second region 142 is made of UV adhesive;

[0075] or,

[0076] The connecting layer 14 is made of UV adhesive, and the first region 141 is a perforated region.

[0077] In this embodiment, UV adhesive (shadowless adhesive), also known as photosensitive adhesive or ultraviolet curing adhesive, is a type of adhesive that must be cured by ultraviolet light. It can be used as an adhesive or as a binder in paints, coatings, inks, etc. Pressure-sensitive adhesive can immediately bond any smooth surface of the adhered object. Furthermore, if the bonding surface of the adhered object is damaged, the pressure-sensitive adhesive will not contaminate the surface, and its bonding process is highly sensitive to pressure, hence the name pressure-sensitive type.

[0078] In one embodiment of this application, the cover plate 11 and the carrier 12 are connected by UV adhesive, and the UV adhesive does not need to be pre-cured before application. This allows the cover plate 11 and the carrier 12 to deform synchronously, thus preventing local deformation or warping of the carrier 12 and improving signal consistency. The UV adhesive includes a first region 141 and a second region 142. The first region 141 corresponds to the pressure sensor 131. The first region 141 is hollowed out, such as... Figure 5 and Figure 6 As shown in the figure, it can be clearly seen that after the first area is hollowed out, the signal distribution received by the pressure sensor is more concentrated. This avoids the problem of small deformation of the carrier 12 above the pressure sensor 131 and small detection signal of the pressure sensor 131 caused by the solidification of the colloid, thereby further improving the sensitivity and accuracy of the pressure sensor 131.

[0079] In another embodiment of this application, the cover plate 11 and the carrier 12 are connected by UV adhesive. The UV adhesive does not require pre-curing before bonding, thus retaining its fluidity during bonding. This allows it to fill localized deformations in the carrier 12, preventing the formation of bonding cavities. Consequently, the cover plate 11 and the carrier 12 can deform synchronously, preventing localized deformation or warping of the carrier 12 and facilitating warping correction after bonding, thereby improving signal consistency. The UV adhesive includes a first region 141 and a second region 142. The first region 141 corresponds to the pressure sensor 131. The first region 141 is hollowed out and then filled with pressure-sensitive adhesive. This pressure-sensitive adhesive is relatively soft, highly sensitive to pressure, and effectively transmits deformation, significantly improving the signal quantity and signal consistency acquired by the pressure sensor 131.

[0080] In this embodiment of the application, the touch panel 1 further includes a reinforcing structure 15 disposed on the second side of the carrier 12. The reinforcing structure 15 is used to increase the hardness of the carrier 12, prevent the carrier 12 from collapsing due to excessive pressing, thereby preventing the distortion of the pressure-sensitive signal of the pressure-sensitive component caused by excessive deformation of the carrier 12, and can also improve the user experience of the appearance.

[0081] In this embodiment, the reinforcing structure 15 can be a stainless steel sheet or a carbon fiber sheet, and the reinforcing structure 15 and the carrier 12 can be bonded together with a cured water-based adhesive. Under the combined support of the reinforcing structure 15 and the cured water-based adhesive, the deformation of the middle position of the carrier 12 under a force of 500gf can be reduced by more than 60%, which greatly improves the aesthetic appearance and user satisfaction.

[0082] In this implementation, the carrier 12 has a first side and a second side. The first side of the carrier 12 is the side facing the cover plate 11. Electronic components are provided on the second side of the carrier 12. A reinforcing structure 15 is also provided on the second side of the carrier 12. The setting of the reinforcing structure 15 does not interfere with the electronic components, thereby increasing the hardness of the carrier 12 and reducing the deformation of the carrier 12 under the action of force.

[0083] like Figure 2 As shown in the embodiment of this application, the reinforcing structure 15 consists of at least two reinforcing ribs 16 disposed on the second side of the carrier 12. The two reinforcing ribs 16 are respectively disposed at the two long edge edges of the carrier 12, and the extending direction of the reinforcing ribs 16 is the same as the extending direction of the long edge of the carrier 12.

[0084] In this embodiment, four pressure sensors 131 can be respectively provided at the four corners of the carrier 12, and two reinforcing ribs 16 are respectively provided at the two long edges of the second side of the carrier 12. This can avoid the interference of the reinforcing ribs 16 with the pressure sensors 131, and increase the strength of the carrier 12. Furthermore, the two reinforcing ribs 16 are symmetrically arranged, which can improve the overall strength of the carrier 12 and avoid uneven distribution.

[0085] In this embodiment, the distribution of pressure sensors 131 on the carrier 12 can also be other, as long as they do not interfere with other structures and can receive pressure detection signals.

[0086] like Figure 3 As shown, in another embodiment of this application, there is a gap between the cover plate 11 and the carrier 12, and the pressure sensing component is a push switch 132 disposed in the gap. The pressure detection signal comes from the capacitance signal generated by the structural change of the push switch 132.

[0087] In the operating system environment, the target component of the electronic device can directly read the capacitance signal from the controller.

[0088] In this embodiment, the push switch 132 can be a Metal Dome, a three-layer structure consisting of a stainless steel metal dome (commonly known as a dome switch), a polyester film, and a central pressing post. It is mainly used in membrane switches for printed circuit boards (PCBs) or flexible printed circuit boards (FPCs). Its standard thickness is 0.49 mm, and its trigger load parameter is 180 g / L. Circuit control functions are achieved through the contact between the metal dome and the circuit board.

[0089] In this embodiment, the target component can be an operating system or a target application, and the target application can include a speaker, a camera, or other applications.

[0090] In this embodiment, the operating system environment can be when the electronic device including the touchpad 1 is turned on, or when the push switch 132 is closed.

[0091] In this embodiment, the push switch 132 has different structural forms, including a closed state and an open state. When the push switch 132 is in the open state, it is not triggered. When the target operating body acts on the usable surface of the cover plate 11, it presses down on the push switch 132, causing a change in its structural form. The push switch 132 changes from the open state to the closed state, and the capacitance signal of the push switch 132 changes. The push switch 132 is also connected to the controller, and it transmits the changed capacitance signal to the controller. The controller is also connected to the target component. In the operating system environment, the target component can directly execute the target function based on the capacitance signal read from the controller.

[0092] In this embodiment of the application, a capacitance detection circuit 16 is formed between the push switch 132 and the controller. When pressure is applied to the push switch 132, the capacitance change signal can be detected by the capacitance detection circuit 16, thereby determining whether the push switch 132 is triggered.

[0093] In this embodiment, the touchpad 1 includes a cover plate 11, a carrier 12, a press switch 132, a controller, and a capacitance detection circuit 16. A gap exists between the cover plate 11 and the carrier 12, and the press switch 132 is disposed within the gap. The press switch 132 is connected to the controller via the capacitance detection circuit 16. When the surface of the cover plate 11 is subjected to a target trigger operation by a target operating object, pressure is transmitted through the cover plate 11 to the press switch 132. The press switch 132 is subjected to pressure, causing a structural change, which in turn causes a capacitance change in the capacitance detection circuit 16 connected to the press switch 132. The controller receives the capacitance signal from the capacitance detection circuit 16. If the capacitance signal is greater than a target threshold, the controller determines that the press switch 132 has been triggered. At this time, the controller controls the touchpad 1 to perform the target function in response to the target trigger operation. This avoids trigger failure problems caused by increased impedance, improving the yield and lifespan of the touchpad 1.

[0094] like Figure 4 As shown in the embodiment of this application, the capacitance detection circuit 16 includes a first capacitor 161 and a second capacitor 162. The first end of the first capacitor 161 is connected to the carrier 12 and the second end is connected to the controller. The first end of the second capacitor 162 is connected to the carrier 12 and the second end is used to connect to the push switch 132.

[0095] When the push switch 132 is not triggered, the second capacitor 162 is in an open circuit state with the controller, and the controller can detect the reference capacitance presented by the first capacitor 161.

[0096] When the push switch 132 is triggered, the second capacitor 162 and the first capacitor 161 are connected in parallel, and the capacitance value detected by the controller is different from the reference capacitor.

[0097] In this embodiment, the resistance between the push switch 132 and the carrier 12 can be considered as a variable resistor. The value of the first capacitor 161 can be set as the reference capacitor, with a base value of 0. The capacitance value of the first capacitor 161 and the second capacitor 162 connected in parallel has a variable capacitance value relative to the reference capacitor, such as... Figure 7 As shown, when the push switch 132 is fully turned on, the impedance is 0 ohms, and the maximum value of the variable capacitance is D0, which can be 1025. As the impedance increases, the variable capacitance gradually decreases. When the impedance is 100KΩ, the variable capacitance is approximately 51% of that in the fully contacted, conducting state (0Ω), and the capacitance change can be 521. In actual production, the impedance caused by OSP and oxidation is mostly within tens of KΩ. Therefore, 50% of the variable capacitance when the impedance is 0Ω can be used as the threshold for determining whether the push switch 132 is triggered: when the variable capacitance is ≥ D0 * 50%, the push switch 132 is considered triggered; when the variable capacitance is < D0 * 50%, the push switch 132 is considered not triggered.

[0098] In this embodiment, the push switch 132 is connected to the controller via a capacitance detection circuit 16. The detection circuit includes a first capacitor 161 and a second capacitor 162. When the detection circuit is not triggered and is in an open-circuit state, only the first capacitor 161 is conducting. At this time, the capacitance signal detected by the controller is the reference capacitance. After the use surface of the cover plate 11 is triggered by the target operating body, the pressure is transmitted to the push switch 132 through the cover plate 11. The push switch 132 is subjected to pressure to produce a structural change, thereby changing the push switch 132 from an open-circuit state to a closed state. Thus, the push switch 132 is connected to the second capacitor 162. At this time, the capacitance detection circuit 16 includes a first capacitor 161 and a second capacitor 162 connected in parallel. The controller receives the capacitance signal from the capacitance detection circuit 16 as the change in capacitance value after the first capacitor 161 and the second capacitor 162 are connected in parallel. When the capacitance change value is greater than or equal to D0*50%, the controller determines that the push switch 132 is triggered. At this time, the controller controls the touchpad 1 to perform the target function in response to the target trigger operation. This avoids trigger failures caused by increased impedance, thus improving the yield and lifespan of the touchpad 1.

[0099] like Figures 1 to 3 As shown, in a second aspect, this application provides an electronic device, including a device body and a touchpad 1 disposed on the device body, the touchpad 1 comprising:

[0100] Cover plate 11;

[0101] A carrier 12 for carrying and conducting electronic components is disposed on the first side of the cover plate 11, the first side being the side facing away from the usable surface of the cover plate 11;

[0102] The controller and touch component are disposed on the carrier 12. The touch component enables the touch panel 1 to generate touch signals in response to touch operations performed by a target operating body on the applicable surface.

[0103] The touchpad 1 is further provided with a pressure-sensitive component that is signal-connected to the controller. The controller can obtain the pressure detection signal generated by the pressure-sensitive component in response to the target trigger operation, and when the pressure detection signal is greater than the target threshold, it controls the touchpad 1 to perform the target function in response to the target trigger operation. The target trigger operation is at least a part of the touch operation.

[0104] The pressure-sensitive component is at least one pressure sensor 131 disposed on the second side of the carrier 12 facing away from the cover plate 11, and the pressure detection signal is at least one of a voltage signal, a current signal, or a frequency signal that can characterize the pressure value from the pressure sensor 131.

[0105] A connecting layer 14 is provided between the cover plate 11 and the carrier 12, and the cover plate 11 and the carrier 12 can achieve synchronous deformation through the connecting layer 14;

[0106] The connecting layer 14 includes a first region 141 corresponding to the pressure sensor 131 and a second region 142 outside the first region 141, wherein the first region 141 and the second region 142 are made of different materials.

[0107] In this embodiment, the cover plate 11 can be a glass plate; the carrier 12 can be a PCBA, which is used to carry and conduct electronic components; the controller can be a touch chip, a pressure chip, or an independent SOC / MCU, etc.; the touch component can be a touch sensing electrode, a pressure sensor 131, or may also include a touch chip; the target operating body can be a human hand or a stylus.

[0108] In this embodiment, the touch component includes a pressure-sensitive component, and may also include other sensing components. The pressure-sensitive component can be a pressure sensor. A target triggering operation performed by the target object on the usable surface of the cover plate 11 can cause the pressure-sensitive component to detect a pressure signal. The pressure-sensitive component can convert the pressure signal into an electrical signal, i.e., a pressure detection signal. The pressure detection signal typically includes an output in the form of voltage, current, or frequency. Alternatively, the pressure-sensitive component can be a device that achieves pressure detection through a capacitive signal or a level signal generated by the deformation of a wavelet under pressure. In this case, the pressure detection signal of the pressure-sensitive component comes from the capacitive signal or level signal generated by the deformation of the wavelet under pressure.

[0109] In this embodiment, a touch operation is any operation that touches the touch component. A target trigger operation is at least a part of the touch operation. A target trigger operation can be a simple press or a touch trajectory plus a press operation. A target trigger operation can include operations such as selecting, clicking the left mouse button, clicking the right mouse button, calling a shortcut key, and configuring system parameters.

[0110] In this embodiment, the cover plate 11 has a usable surface side and a first side disposed opposite to each other. The usable surface of the cover plate 11 can be touched by a target operating body. A carrier 12 is provided on the first side of the cover plate 11. The carrier 12 carries electronic components including a controller and a touch component. The controller and the touch component can be connected and made conductive through the carrier 12. When the target operating body touches the usable surface of the cover plate 11, the touch component can generate a touch signal. The touch component can transmit the touch signal to the controller. The controller can control the touchpad 1 to perform the function corresponding to the touch signal according to the touch signal.

[0111] In this embodiment, the connecting layer 14 can be an adhesive layer that bonds the cover plate 11 to the carrier 12.

[0112] An electronic device provided in this application embodiment includes a device body and a touch panel 1. The touch panel 1 is disposed on the device body. The touch panel 1 includes a cover plate 11, a carrier 12, a connecting layer 14, a controller, and a pressure-sensitive component. The connecting layer 14 connects the cover plate 11 and the carrier 12 so that the cover plate 11, the connecting layer 14, and the carrier 12 can deform synchronously, thus avoiding the warping problem of the touch panel 1. Furthermore, when the target operating body applies a touch operation to the usable surface of the cover plate 11, the sensitivity and accuracy of the pressure-sensitive component set on the carrier 12 can be increased. This allows the pressure-sensitive component to more sensitively obtain the pressure sensing signal generated by the target trigger operation. The controller is connected to the pressure-sensitive component to receive the pressure detection signal and compares the pressure detection signal with the target threshold. When the pressure sensing signal is greater than the target threshold, the controller controls the touchpad 1 to execute the target function of the target trigger operation. The touchpad 1 determines whether it is triggered by sensing data or by the capacitance signal generated by the structural changes of the pressure-sensitive component. This avoids the problem of touch failure caused by increased impedance in related technologies, thereby improving the yield and service life of the touchpad 1.

[0113] In this embodiment of the application, the device body includes a first body and a second body that are rotatably connected. A display device is provided on the first body, and the touch panel 1 is provided on the second body.

[0114] The first region 141 is made of pressure-sensitive adhesive, and the second region 142 is made of UV adhesive;

[0115] or,

[0116] The connecting layer 14 is made of UV adhesive, and the first region 141 is a perforated region.

[0117] In this embodiment, the target operation of the target operating body on the surface of the touchpad 1 can realize the target function, which includes, but is not limited to, enabling the display device on the first body to display.

[0118] In this embodiment, UV adhesive (shadowless adhesive), also known as photosensitive adhesive or ultraviolet curing adhesive, is a type of adhesive that must be cured by ultraviolet light. It can be used as an adhesive or as a binder in paints, coatings, inks, etc. Pressure-sensitive adhesive can immediately bond any smooth surface of the adhered object. Furthermore, if the bonding surface of the adhered object is damaged, the pressure-sensitive adhesive will not contaminate the surface, and its bonding process is highly sensitive to pressure, hence the name pressure-sensitive type.

[0119] In one embodiment of this application, the cover plate 11 and the carrier 12 are connected by UV adhesive, and the UV adhesive does not need to be pre-cured before application. This allows the cover plate 11 and the carrier 12 to deform synchronously, thus preventing local deformation or warping of the carrier 12 and improving signal consistency. The UV adhesive includes a first region 141 and a second region 142. The first region 141 is correspondingly disposed with respect to the pressure sensor 131, such as... Figure 5 and Figure 6 As shown in the figure, it can be clearly seen that the signal distribution received by the pressure sensor is more concentrated after the first region 141 is hollowed out. Hollowing out the first region 141 can avoid the problem of small deformation of the carrier 12 above the pressure sensor 131 and small detection signal of the pressure sensor 131 caused by the solidification of the colloid, thereby further improving the sensitivity and accuracy of the pressure sensor 131.

[0120] In another embodiment of this application, the cover plate 11 and the carrier 12 are connected by UV adhesive. The UV adhesive does not require pre-curing before application, thus retaining its fluidity during bonding. This allows it to fill localized deformations in the carrier 12, preventing the formation of bonding cavities. Consequently, the cover plate 11 and the carrier 12 can deform synchronously, preventing localized deformation or warping of the carrier 12 and facilitating warping correction after bonding, thereby improving signal consistency. The UV adhesive includes a first region 141 and a second region 142. The first region 141 corresponds to the pressure sensor 131. The first region 141 is hollowed out and then filled with pressure-sensitive adhesive. This pressure-sensitive adhesive is relatively soft and highly sensitive to pressure, effectively transmitting deformation caused by finger pressure. This significantly improves the signal quantity and signal consistency acquired by the pressure sensor 131.

[0121] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0122] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. A touchpad, characterized in that, include: Cover plate; A carrier for carrying and conducting electronic components is disposed on the first side of the cover plate, the first side being the side facing away from the usable surface of the cover plate; A controller and a touch component are disposed on the carrier, the touch component enabling the touchpad to generate touch signals in response to a touch operation performed by a target operating body on the use surface; The touchpad is further provided with a pressure-sensitive component that is signal-connected to the controller. The controller can obtain the pressure detection signal generated by the pressure-sensitive component in response to the target trigger operation, and when the pressure detection signal is greater than the target threshold, control the touchpad to perform the target function in response to the target trigger operation. The target trigger operation is at least a part of the touch operation. The pressure detection signal comes from the sensing data of the pressure-sensitive component or from the capacitance signal generated by the structural changes of the pressure-sensitive component.

2. The touchpad according to claim 1, characterized in that, The pressure-sensitive component is at least one pressure sensor disposed on the second side of the carrier facing away from the cover plate, and the pressure detection signal is at least one of a voltage signal, a current signal, or a frequency signal that can characterize the pressure value from the pressure sensor. A connecting layer is provided between the cover plate and the carrier, and the cover plate and the carrier can deform synchronously through the connecting layer; The connecting layer includes a first region corresponding to the pressure sensor and a second region outside the first region, wherein the first region and the second region are made of different materials.

3. The touchpad according to claim 2, characterized in that, The first region is made of pressure-sensitive adhesive, and the second region is made of UV adhesive; or, The bonding layer is made of UV adhesive, and the first area is a perforated area.

4. The touchpad according to claim 2, characterized in that, The touchpad also includes a reinforcing structure disposed on the second side of the carrier, the reinforcing structure being used to increase the rigidity of the carrier.

5. The touchpad according to claim 4, characterized in that, The reinforcing structure consists of at least two reinforcing ribs disposed on the second side of the carrier. The two reinforcing ribs are respectively disposed at the two long edges of the carrier, and the extending direction of the reinforcing ribs is the same as the extending direction of the long edges of the carrier.

6. The touchpad according to claim 1, characterized in that, There is a gap between the cover plate and the carrier, and the pressure-sensitive component is a push switch disposed in the gap. The pressure detection signal comes from the capacitance signal generated by the structural change of the push switch. In the operating system environment, the target component of the electronic device can directly read the capacitance signal from the controller.

7. The touchpad according to claim 6, characterized in that, A capacitance detection circuit is formed between the push switch and the controller. When pressure is applied to the push switch, the capacitance detection circuit can detect a capacitance change signal, thereby determining whether the push switch has been triggered.

8. The touchpad according to claim 7, characterized in that, The capacitance detection circuit includes: A first capacitor and a second capacitor, wherein the first terminal of the first capacitor is connected to the carrier and the second terminal is connected to the controller, and the first terminal of the second capacitor is connected to the carrier and the second terminal is connected to the push switch; When the push switch is not triggered, the second capacitor is in an open circuit state with the controller, and the controller can detect the reference capacitance presented by the first capacitor; When the push switch is triggered, the second capacitor and the first capacitor are connected in parallel, and the capacitance value detected by the controller is different from the reference capacitor.

9. An electronic device, comprising a device body and a touchpad disposed on the device body, the touchpad comprising: Cover plate; A carrier for carrying and conducting electronic components is disposed on the first side of the cover plate, the first side being the side facing away from the usable surface of the cover plate; A controller and a touch component are disposed on the carrier, the touch component enabling the touchpad to generate touch signals in response to a touch operation performed by a target operating body on the use surface; The touchpad is further provided with a pressure-sensitive component that is signal-connected to the controller. The controller can obtain the pressure detection signal generated by the pressure-sensitive component in response to the target trigger operation, and when the pressure detection signal is greater than the target threshold, it controls the touchpad to perform the target function in response to the target trigger operation. The target trigger operation is at least a part of the touch operation. The pressure-sensitive component is at least one pressure sensor disposed on the second side of the carrier facing away from the cover plate, and the pressure detection signal is at least one of a voltage signal, a current signal, or a frequency signal that can characterize the pressure value from the pressure sensor. A connecting layer is provided between the cover plate and the carrier, and the cover plate and the carrier can deform synchronously through the connecting layer; The connecting layer includes a first region corresponding to the pressure sensor and a second region outside the first region, wherein the first region and the second region are made of different materials.

10. The electronic device according to claim 9, characterized in that, The device body includes a first body and a second body that are rotatably connected. A display device is provided on the first body, and the touch panel is provided on the second body. The first region is made of pressure-sensitive adhesive, and the second region is made of UV adhesive; or, The bonding layer is made of UV adhesive, and the first area is a perforated area.

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