Key and electronic equipment

Abstract

The utility model discloses a key and electronic equipment, and relates to the technical field of electronic equipment. The key provided by the utility model comprises a circuit board, a movable assembly and a conductive structure. Wherein the movable assembly can move relative to the circuit board; the conductive structure is connected with the movable assembly and is used for generating a capacitance field with the circuit board; and when the variable quantity of the capacitance field reaches a first preset threshold value, the circuit board is used for responding to the key touch operation information.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electronic devices, and in particular to a button and an electronic device. Background Art

[0002] As users have higher and higher requirements for the functional diversity of electronic devices, keyboards as input devices are also developing towards multi-functionality. However, current keyboards generally have the problems of single function and poor user experience. Utility Model Content

[0003] Embodiments of the present application provide a key and an electronic device.

[0004] In a first aspect, an embodiment of the present application provides a key, which includes a circuit board, a movable component and a conductive structure. The movable component can move relative to the circuit board; the conductive structure is connected to the movable component, and the conductive structure is used to generate a capacitive field with the circuit board; when the change in the capacitive field reaches a first preset threshold, the circuit board is used to respond to key touch operation information.

[0005] In one possible implementation of the present application, when the conductive structure moves relative to the circuit board in a pressing direction so that the change in the capacitance field reaches a second preset threshold, the circuit board is used to respond to a typing signal corresponding to the key; wherein the second preset threshold is different from the first preset threshold.

[0006] In a possible implementation of the present application, the movable component includes a keycap and a lifting support mechanism, one end of the lifting support mechanism is connected to the keycap, and the other end of the lifting support mechanism is connected to the circuit board, and the lifting support mechanism is used to drive the keycap to move along the pressing direction relative to the circuit board; the conductive structure is arranged on the lifting support mechanism or the keycap.

[0007] In a possible implementation of the present application, a projection area of ​​the conductive structure on the circuit board falls within a projection area of ​​the key cap on the circuit board.

[0008] In a possible implementation of the present application, the conductive structure and the main body of the lifting support mechanism are molded together by double-shot injection molding.

[0009] In a possible implementation of the present application, the conductive structure is a conductive material coated on the lifting support mechanism; or a mounting hole is opened on the body of the lifting support mechanism, and the conductive structure is filled in the mounting hole.

[0010] In a possible implementation of the present application, the first preset threshold is a first displacement of the conductive structure relative to the circuit board, and the second preset threshold is a second displacement of the conductive structure relative to the circuit board; the first displacement and the second displacement are used to characterize changes in the capacitance field.

[0011] In a possible implementation of the present application, the side of the circuit board facing the conductive structure is covered with an isolation film layer, and the side of the circuit board facing the conductive structure is connected to a light-emitting component.

[0012] In a possible implementation of the present application, the circuit board includes at least a transmitting electrode circuit layer and a receiving electrode circuit layer, and the transmitting electrode circuit layer and the receiving electrode circuit layer are used to interact with the conductive structure.

[0013] In a second aspect, an embodiment of the present application provides an electronic device, the electronic device comprising a processing unit, a keyboard, and a key of any one of the first aspects. The processing unit is used to identify the capacitance value of the capacitance field change; and the keyboard is formed with a plurality of keys. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the overall structure of a key in an unpressed state provided in an embodiment of the present application;

[0015] Figure 2 A schematic diagram of the overall structure of a button in a pressed state provided in an embodiment of the present application;

[0016] Figure 3 This is one of the schematic diagrams of the connection relationship between a conductive structure and a lifting support mechanism provided in an embodiment of the present application;

[0017] Figure 4 A second schematic diagram of the connection relationship between a conductive structure and a lifting support mechanism provided in an embodiment of the present application;

[0018] Figure 5 A third schematic diagram of the connection relationship between a conductive structure and a lifting support mechanism provided in an embodiment of the present application;

[0019] Figure 6 A schematic diagram of the overall structure of a circuit board provided in an embodiment of the present application;

[0020] Figure 7 A schematic diagram of the connection relationship between an isolation film layer and a circuit board provided in an embodiment of the present application;

[0021] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0022] Reference numerals:

[0023] 1-circuit board; 11-transmitting electrode circuit layer; 12-receiving electrode circuit layer; 13-circuit layer; 2-movable component; 21-key cap; 22-lifting support mechanism; 23-elastic reset member; 221-support member; 2211-mounting hole; 3-conductive structure; 4-isolation film layer; 5-light-emitting component. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0025] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0026] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0027] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0028] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0029] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0030] The embodiment of the present application provides an electronic device, and there are many types of commonly used electronic devices, such as desktop computers, laptop computers, tablet computers, mobile phones, televisions, etc. It should be noted that in this embodiment, the type of electronic device is not limited.

[0031] The embodiment of the present application provides a keyboard, which is usually used as an input device, and can convert the user's operation instructions into corresponding signals and send them to the central processing module of the electronic device, so that the central processing module receives the signals and performs the corresponding functions. The keyboard can be applied to servers, computers, production equipment, etc. The keyboard can be independent of the electronic device or integrated into the electronic device, and the present application does not limit this. In order to vividly illustrate the electronic device provided by the embodiment of the present application, the electronic device can be taken as an example of a laptop computer, and accordingly, the keyboard is a keyboard integrated on the laptop computer, and the keys are keys on the keyboard, such as keys in the function area, letter area, control key area, etc. on the keyboard.

[0032] Currently, a key usually includes a key cap, a scissor support frame supporting the key cap, a circuit board, etc., and has many key parts, and the key functions are relatively simple. For example, the function of a number key is usually only to realize the digital information function corresponding to the number key when it is pressed.

[0033] In view of this, the embodiment of the present application provides a key, referring to Figure 1 and Figure 2 The key comprises a circuit board 1, a movable component 2 and a conductive structure 3. The movable component 2 can move relative to the circuit board 1; the conductive structure 3 is connected to the movable component 2, and the conductive structure 3 is used to generate a capacitive field with the circuit board 1; when the change in the capacitive field reaches a first preset threshold, the circuit board 1 is used to respond to the key touch operation information.

[0034] In the embodiment of the present application, the circuit board 1 may include at least a processing unit, capacitor-related components for generating and receiving capacitance, etc., without specific limitation. The circuit board 1 can at least generate capacitance, receive changes in capacitance values, and identify and respond to button pressing and touch operation information based on changes in capacitance values.

[0035] The specific structural form of the movable component 2 in the embodiment of the present application is not limited. The movable component 2 can be two support frames hinged together, and the same end of the two support frames is movably connected to the circuit board 1. When the support rod is pressed under the action of an external force, the end of the support rod away from the circuit board 1 can move closer to the circuit board 1 in a direction perpendicular to the plane where the circuit board 1 is located. Here, the direction perpendicular to the plane where the circuit board 1 is located is Figure 1 and Figure 2In the direction indicated by the middle arrow, at the same time, an elastic member can also be arranged between the support rod and the circuit board 1 so that the support rod can be reset to the initial position. The movable component 2 can also include at least a slide bar and a reset spring, wherein a columnar shell can be protruded on the side of the circuit board 1 facing the movable component 2, and the shell has a cavity for accommodating the slide bar and the spring seat, wherein the spring seat is arranged at the bottom of the columnar shell, and a reset spring is installed in the spring seat, the slide bar is sleeved on the reset spring, and a limit clamp is arranged on the slide bar for the reset spring to be away from the spring seat. Under the action of external force, the slide bar can move relative to the circuit board 1 along a plane perpendicular to the circuit board 1, and when moving close to the circuit board 1, the limit clamp is used to compress the reset spring to make it in a compressed deformation state, and when the external force is removed, the slide bar can move in a direction away from the circuit board 1, thereby realizing the movement of the movable component 2 relative to the circuit board 1.

[0036] The conductive structure 3 in the embodiment of the present application is also not limited. For example, the conductive structure 3 can be integrally formed on the movable component 2, or the conductive structure 3 can be fixedly connected to the movable component 2 as a separate piece. The specific structural form of the conductive structure 3 is also not limited, and it can be a strip structure, a plate structure, and the like. The material of the conductive structure 3 only needs to be conductive, for example, the material of the conductive structure 3 can be copper, aluminum, and the like. Among them, the conductive structure 3 can have a snap-in protrusion, and the movable component 2 can have a snap-in groove that is adapted to snap-in with the snap-in protrusion, so that the conductive structure 3 is snap-in connected to the movable component 2; the conductive structure 3 can also be adhesively connected to the movable component 2, screwed, etc., and is not specifically limited.

[0037] The key provided in the embodiment of the present application is provided with a conductive structure 3 on the movable component 2, so that when the movable component 2 moves toward the circuit board 1 under the action of an external force, the movable component 2 can drive the conductive structure 3 connected thereto to move relative to the circuit board 1, such as when the movable component 2 drives the conductive structure 3 to move downward close to the circuit board 1, so that the capacitance field generated on the circuit board 1 is affected by the conductive structure 3, so that the capacitance value of the capacitance field changes. For example, in the process of the conductive structure 3 constantly approaching the circuit board 1, when the circuit board 1 recognizes that the change in the capacitance value reaches a certain threshold, it can recognize that the key is pressed, thereby outputting a signal of the position of the corresponding keycap 21 to realize the function of the corresponding key.

[0038] Among them, the user may touch and slide with a finger on the outer surface of the movable component 2, such as touching and sliding on the upper surface of the keycap 21 of the movable component 2, that is, the movable component 2 does not move relative to the circuit board 1, that is, the conductive structure 3 does not move relative to the circuit board 1; or when the user touches and slides on the upper surface of the keycap 21 of the movable component 2, the conductive structure 3 has a very small relative movement relative to the circuit board 1. Here, the very small relative movement can be understood as the user's finger or the user's hand-held capacitive pen sliding on the movable outer surface, it is inevitable that the movable component 2 will have a force toward the side of the circuit board 1, which is equivalent to applying a small pressing force to the movable component 2. The pressing force in this case is extremely small compared to the user's purposeful pressing of the movable component 2. Due to the user's touch action, such as the finger touch sliding process, due to the conductivity of the human body to the current, the finger can cause the change of the inherent capacitance field generated by the circuit board 1. When the touch deformation is obtained so that the change amount of the capacitance field reaches the first preset threshold, the circuit board 1 is used to respond to the key touch operation information, such as the left and right sliding position information of the user's finger, rather than the key signal corresponding to the key pressing. The above arrangement enables the keys to not only have the function of keyboard pressing input, but also have the touch function of the keys that can recognize finger sliding positioning and gestures, thereby realizing the dual functions of pressing and touching the keys on the keyboard, thereby improving the functional diversity of the keyboard and the user experience.

[0039] For example, refer to Figure 1 and Figure 2 The movable component 2 includes a keycap 21 and a lifting support mechanism 22. One end of the lifting support mechanism 22 is connected to the keycap 21, and the other end of the lifting support mechanism 22 is connected to the circuit board 1. The lifting support mechanism 22 is used to drive the keycap 21 to move relative to the circuit board 1 along the pressing direction; the conductive structure 3 is arranged on the lifting support mechanism 22 or the keycap 21. Among them, the pressing direction can be understood as a direction perpendicular to the plane where the circuit board 1 is located, that is, Figure 1 and Figure 2The direction indicated by the arrow in the middle. Specifically, the lifting support mechanism 22 is two symmetrical plate-shaped support members 221 hinged together by a hinge axis, and the hinge axis is located in the middle of the support member 221. The two support members 221 have a first clamping structure at one end facing the circuit board 1, which is respectively used to clamp with the second clamping structure on the circuit board 1 facing the side of the support member 221. Here, the second clamping structure can be set on the protrusion protruding from the circuit board 1 to connect the support member 221 with the circuit board 1, and the support member 221 can move closer to the circuit board 1 in a direction perpendicular to the plane where the circuit board 1 is located when pressed. In addition, an elastic reset member 23 can also be set between the support member 221 and the circuit board 1, so that when the support member 221 is released after being pressed, the support member 221 can be reset to the initial position. Among them, the elastic reset member 23 can be a silicone body with a certain elastic deformation ability, or it can be a spring, and the opposite ends of the elastic reset member 23 are respectively connected to the keycap 21 and the circuit board 1.

[0040] There is no limitation on the connection form between the lifting support mechanism 22 and the keycap 21. For example, the keycap 21 has a snap-in groove on the side facing the support member 221, and the end of the support member 221 facing the keycap 21 is snapped into the snap-in groove; or the keycap 21 and the support member 221 are bonded together by adhesive. Among them, the conductive structure 3 can be arranged on the keycap 21 or on the support member 221 of the lifting support mechanism 22. For example, the conductive structure 3 can be a sheet-like structure and connected to a side wall of the keycap 21 facing the circuit board 1; or the conductive structure 3 is arranged on one of the support members 221. Preferably, refer to Figure 3 , Figure 4 and Figure 5 The conductive structure 3 is arranged on the support member 221, so that the vacant space between the support member 221 and the key cap 21 can be fully utilized to reduce the possibility of occupying too much space in the thickness direction of the keyboard due to the arrangement of the conductive structure 3, and at the same time make the entire key structure more compact.

[0041] In some embodiments, reference Figure 1 and Figure 2, when the conductive structure 3 moves relative to the circuit board 1 in the pressing direction so that the change in the capacitance field reaches the second preset threshold, the circuit board 1 is used to respond to the input signal corresponding to the key; wherein the second preset threshold is different from the first preset threshold. Here, the second preset threshold is different from the first preset threshold and specifically refers to that the order of magnitude of the second preset threshold is different from the order of magnitude of the first preset threshold. This is because the user touches and slides with a finger on the outer surface of the active component 2, for example, slides on the upper surface of the keycap 21 on the active component 2. At this time, theoretically speaking, the keycap 21 is not subjected to a force in a direction perpendicular to the plane where the circuit board 1 is located, that is, the user's finger only moves in a direction parallel to the plane where the circuit board 1 is located, and the conductive structure 3 on the active component 2 does not move relative to the circuit board 1 in a direction perpendicular to the plane where the circuit board 1 is located. However, considering the actual situation, when the user touches and slides on the outer surface of the active component 2, it is inevitable that the conductive structure 3 will have a very small relative movement relative to the circuit board 1, which is equivalent to applying a very small pressing force to the active component 2, that is, the change of the inherent capacitance field on the circuit board 1 is completely caused by the change of the capacitance field caused by the user's finger itself being charged, or it is a superposition of the change of the capacitance field caused by the user's finger itself being charged and the change of the capacitance field caused by the very small movement of the conductive structure 3 relative to the circuit board 1. In this case, the change in the capacitance field is not in the same order of magnitude as the change in the capacitance field caused by the active component 2 being pressed, that is, the change in the capacitance field of the two can be easily distinguished, so that the processing unit can more easily identify the change in the capacitance field of the two and then identify whether the key is in a pressed state or a touched state.

[0042] In some embodiments, the first preset threshold is the first displacement of the conductive structure 3 relative to the circuit board 1, and the second preset threshold is the second displacement of the conductive structure 3 relative to the circuit board 1; the first displacement and the second displacement are used to characterize the change of the capacitance field. Among them, the change of the capacitance field can be characterized by the displacement of the conductive structure 3 relative to the circuit board 1. For example, when the keycap 21 is pressed, that is, when the user purposefully uses the pressing function of the key, at this time, the pressing force on the keycap 21 is large, and the conductive structure 3 moves downward relative to the circuit board 1 with the movable component 2. In the process of the conductive structure 3 constantly approaching the circuit board 1, the second displacement becomes larger and larger. When the second displacement reaches the second preset threshold, the corresponding circuit board 1 outputs the corresponding key input signal, such as identifying the corresponding key as a delete key, a space bar, etc., and then outputs the signal of the corresponding key position to the circuit board 1 to realize the corresponding function of the keyboard, that is, the above can realize the key function under the key pressing state. For another example, when the user's finger slides on the keycap 21, that is, when the user purposefully uses the touch function of the key, the first displacement of the conductive structure 3 relative to the circuit board 1 is zero because the keycap 21 is not subjected to a force perpendicular to the plane of the circuit board 1. Alternatively, considering that the keycap 21 will inevitably be subjected to a very small pressing force when the finger touches the key, the conductive structure 3 will produce a very small first displacement relative to the circuit board 1. Here, the first displacement of the key in the touch state is much smaller than the second displacement of the key in the pressed state. When the first displacement reaches the first preset threshold, it can be identified that the key is in the touch function use state. Since the capacitance value at the corresponding position where the finger contacts the keycap 21 during the finger sliding process will change, the position of the finger is determined by identifying the change in capacitance value at different positions, so that the key has the function of identifying the finger sliding positioning.

[0043] Reference Figure 1 and Figure 2 , the projection area of ​​the conductive structure 3 on the circuit board 1 falls within the projection area of ​​the key cap 21 on the circuit board 1. In this way, the key cap 21 located above the conductive structure 3 can protect the conductive structure 3, so as to reduce the possibility of false touch caused by the conductive structure 3 falling outside the projection area of ​​the key cap 21 on the circuit board 1.

[0044] In some embodiments, reference Figure 3 The conductive structure 3 and the body of the lifting support mechanism 22 are formed together by double injection molding. Specifically, for example, the conductive structure 3 made of conductive material and the body of the lifting support mechanism 2 made of plastic material, two different materials, can be injected into the same set of molds, thereby forming a component formed of two different materials, thereby improving the integrity and reliability of the key.

[0045] In other embodiments, referring to Figure 4The conductive structure 3 is a conductive material coated on the lifting support mechanism 22, such as a structure in which a conductive coating is electroplated on at least part of the outer periphery of the support member 221 of the lifting support mechanism 22, or a sheet of conductive material is bonded and coated on at least part of the support member 221. Here, Figure 4 In the figure, the coated black area on one of the supports 221 is the coated conductive material or the conductive coating structure.

[0046] Alternatively, you can refer to Figure 5 A mounting hole 2211 is provided on the main body of the lifting support mechanism 22, and the conductive structure 3 is filled in the mounting hole 2211. Specifically, the mounting hole 2211 can be a square hole, a circular hole, etc. Correspondingly, the outer contour of the conductive structure 3 can be adapted to the inner contour of the mounting hole 2211, and an elastic protrusion can also be provided on the outer wall of the conductive structure 3 so that the conductive structure 3 can be interference fit in the mounting hole 2211 through the elastic protrusion thereon.

[0047] For example, refer to Figure 6 The circuit board 1 at least includes a transmitting electrode circuit layer 11 and a receiving electrode circuit layer 12, and the transmitting electrode circuit layer 11 and the receiving electrode circuit layer 12 are used to interact with the conductive structure 3. Here, the transmitting electrode circuit layer 11 and the receiving electrode circuit layer 12 are used to form an electric field, so that an inherent capacitance field is formed on the circuit board 1. When the conductive structure 3 moves relative to the transmitting electrode circuit layer 11 and the receiving electrode circuit layer 12 of the circuit board 1, the inherent capacitance field formed on the circuit board 1 will be changed, that is, the transmitting electrode circuit layer 11 and the receiving electrode circuit layer 12 are used to interact with the conductive structure 3. Among them, the transmitting electrode circuit layer 11 and the receiving electrode circuit layer 12 can form a capacitor component to be independent of the circuit board 1; the transmitting electrode circuit layer 11 and the receiving electrode circuit layer 12 can be arranged in the circuit board 1 with relative spacing, or the transmitting electrode circuit layer 11 and the receiving electrode circuit layer 12 can be mutually embedded in the circuit board 1, and there is no specific limitation.

[0048] For example, refer to Figure 6 The emitting electrode circuit layer 11 and the receiving electrode circuit layer 12 are arranged at intervals and can be arranged relatively to each other, and are laid flat and printed on the circuit layer 13 of the circuit board 1. In this way, the space occupied by the emitting electrode circuit layer 11 and the receiving electrode circuit layer 12 in the thickness direction of the keyboard can be saved.

[0049] Reference Figure 1 , Figure 2 and 7, the side of the circuit board 1 facing the conductive structure 3 is covered with an isolation film layer 4. Here, the material of the isolation film layer 4 is not specifically limited, for example, the material of the isolation film layer 4 can be polypropylene (PP), polyimide (PI), polyethylene terephthalate (PET), etc. Preferably, a polyethylene terephthalate film with good comprehensive mechanical properties, strong waterproof performance and good light transmittance can be used. Among them, the side of the isolation film layer 4 facing away from the circuit board 1 can be bonded and connected to the elastic reset member 23 facing one end face of the circuit board 1. In addition, the isolation film layer 4 can also be covered on the side of the circuit board 1 away from the conductive structure 3 to further provide waterproof and insulation protection for the circuit board 1, so as to greatly improve the reliability of the button.

[0050] In some embodiments, a light-emitting component 5 is connected to the side of the circuit board 1 facing the conductive structure 3. The light-emitting component 5 can be electrically connected to the circuit board 1 and is disposed on the side of the circuit board 1 facing the keycap 21, for transmitting light to the keycap 21. Here, the light-emitting component 5 can include at least a light-emitting component and a light control unit for controlling the light-emitting component, wherein the light control unit is connected between the light-emitting component and the circuit board 1. Among them, the keycap 21 and the support member 221 can both be made of a light-transmitting material, so that the light of the light-emitting component can be transmitted through the keycap 21, so that the user can use the keyboard in a darker environment to improve the adaptability of the keyboard.

[0051] In some embodiments, reference Figure 8 , the electronic device also includes a processing unit, which is used to identify the capacitance value of the capacitance field change. Here, the processing unit can be a signal circuit integrated on the circuit board 1, a processing chip in the electronic device, or a central processing unit in the electronic device. It can also be a processing device arranged outside the circuit board 1 and electrically connected to the circuit board 1, so that the processing unit can identify the change of the capacitance field, and can respond to the key pressing input signal and the touch operation information on the key surface, output the signal of the corresponding key cap position to the processing chip to realize the function of the keyboard, etc., and the specific presentation form of the processing unit is not limited. The keyboard has multiple keys to enable the keyboard input and touch recognition of finger sliding positioning and gesture functions; the touchpad area formed by multiple keys is larger and the use experience is better; when the finger slides on the key cap surface, the capacitance values ​​of these positions are affected during the finger sliding process, and the position of the finger is determined by identifying the change of the capacitance value of this position.

[0052] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A key, It is characterized in that include: Circuit boards; a movable component, the movable component being movable relative to the circuit board; a conductive structure, the conductive structure being connected to the movable component, the conductive structure being used to generate a capacitive field with the circuit board; When the variation of the capacitance field reaches a first preset threshold, the circuit board is used to respond to the key touch operation information.

2. The key according to claim 1, It is characterized in that When the conductive structure moves relative to the circuit board along the pressing direction so that the variation of the capacitance field reaches a second preset threshold, the circuit board is used to respond to the input signal corresponding to the key; The second preset threshold is different from the first preset threshold.

3. The key according to claim 2, It is characterized in that The movable component includes a keycap and a lifting support mechanism, one end of the lifting support mechanism is connected to the keycap, and the other end of the lifting support mechanism is connected to the circuit board, and the lifting support mechanism is used to drive the keycap to move relative to the circuit board along the pressing direction; The conductive structure is arranged on the lifting support mechanism or the key cap.

4. The key according to claim 3, It is characterized in that The projection area of ​​the conductive structure on the circuit board falls within the projection area of ​​the key cap on the circuit board.

5. The key according to claim 3, It is characterized in that The conductive structure and the main body of the lifting support mechanism are formed together by double-shot injection molding.

6. The key according to claim 3, It is characterized in that The conductive structure is a conductive material coated on the lifting support mechanism; Or a mounting hole is provided on the main body of the lifting support mechanism, and the conductive structure is filled in the mounting hole.

7. The key according to claim 2, It is characterized in that The first preset threshold is a first displacement of the conductive structure relative to the circuit board, and the second preset threshold is a second displacement of the conductive structure relative to the circuit board; The first displacement and the second displacement are used to characterize the change of the capacitance field.

8. The key according to claim 1, It is characterized in that The side of the circuit board facing the conductive structure is covered with an isolation film layer, and the side of the circuit board facing the conductive structure is connected with a light-emitting component.

9. The key according to claim 1, It is characterized in that The circuit board at least includes a transmitting electrode circuit layer and a receiving electrode circuit layer, and the transmitting electrode circuit layer and the receiving electrode circuit layer are used to interact with the conductive structure.

10. An electronic device, It is characterized in that include: a processing unit for identifying a capacitance value of a change in the capacitance field; The key according to any one of claims 1 to 9; A keyboard is formed with a plurality of the keys.

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