Key and electronic device

Abstract

The application discloses a key and an electronic device. The key is used for the electronic device and comprises an elastic fixing part, a first conductive part, a second conductive part, and an ion part. The elastic fixing part is provided with a touch area. One of the first conductive part and the second conductive part is used for connecting a positive pole of a power supply of the electronic device, and the other of the first conductive part and the second conductive part is used for connecting a negative pole of the power supply. The ion part is located between the first conductive part and the second conductive part. One of the first conductive part and the second conductive part is arranged in correspondence with the touch area. The application can significantly improve the sensitivity and signal-to-noise ratio of the key by reasonably arranging the structure of the key. The key has very high pressure response sensitivity, signal-to-noise ratio, anti-interference performance and pressure resolution, and can realize the sensing of slight pressure change.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic devices, and particularly relates to a key and an electronic device. BACKGROUND

[0002] The pressure-sensitive key can not only realize the function of the mechanical key in the traditional intelligent device, but also realize the more beautiful appearance and the stronger waterproof performance of the structure of the intelligent device. At present, the pressure-sensitive key is mainly realized through three principle schemes of ultrasonic, resistance and capacitance. The pressure-sensitive key based on the above three principles has the disadvantages of low sensitivity and inability to meet the sensing requirement of small pressure changes, so that the user cannot accurately control the electronic device when using. SUMMARY

[0003] The present application aims to provide a key and an electronic device, and at least solve one of the problems that the sensitivity of the pressure-sensitive key cannot meet the sensing requirement of small pressure changes in the prior art.

[0004] In order to solve the above technical problems, the present application is implemented as follows:

[0005] In a first aspect, the embodiments of the present application provide a key for an electronic device, comprising: an elastic fixing part, the elastic fixing part being provided with a touch area; a first conductive part; a second conductive part, one of the first conductive part and the second conductive part being used for connecting a positive pole of a power supply of the electronic device, and the other of the first conductive part and the second conductive part being used for connecting a negative pole of the power supply; and an ion part, the ion part being located between the first conductive part and the second conductive part; wherein one of the first conductive part and the second conductive part is arranged correspondingly to the touch area.

[0006] In a second aspect, the embodiments of the present application provide an electronic device, comprising the key according to any one of the embodiments of the first aspect.

[0007] In the embodiments of the present application, the key comprises an elastic fixing part, a first conductive part, a second conductive part and an ion part. The ion part is located between the first conductive part and the second conductive part, and one of the first conductive part and the second conductive part is arranged correspondingly to the touch area of the elastic fixing part. Since one of the first conductive part and the second conductive part is used for connecting the positive pole of the power supply of the electronic device, and the other of the first conductive part and the second conductive part is used for connecting the negative pole of the power supply. Therefore, under the electrification state, the free-moving cations in the ion part will move to the conductive part of the negative pole, and the anions will move to the conductive part of the positive pole under the attraction of the coulomb force, thereby forming an EDL (Electrical double layer, double electric layer).

[0008] In this way, after the user touches the touch area, the touch area is deformed under pressure to extrude the corresponding conductive part and the ion part, so that the actual contact area of the first conductive part, the second conductive part and the ion part changes, the number of ions in contact also changes, resulting in a change in the EDL capacitor, based on the corresponding relationship between the size of the pressure and the capacitance value, the mainboard of the electronic device senses the change in the capacitance and then realizes different functions.

[0009] The capacitance of the double electric layer is 1000 times higher than the capacitance value of a pressure button of a comparable size in the related art, which can significantly improve the sensitivity and signal-to-noise ratio of the button. The button has extremely high pressure response sensitivity, signal-to-noise ratio, anti-interference performance and pressure resolution, and can realize the sensing of slight pressure changes.

[0010] In addition, the setting has the advantages of low cost and high reliability, and has lower process requirements.

[0011] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0012] The above and / or additional aspects and advantages of the application will become apparent and be readily understood by a person of ordinary skill in the art from the following description, taken in conjunction with the accompanying drawings in which:

[0013] Figure 1 is a schematic diagram of the principle of the button of the application based on the double electric layer;

[0014] Figure 2 is an equivalent circuit diagram of the button shown in Figure 1

[0015] Figure 3 is a structural schematic diagram of the first state of the button of the application;

[0016] Figure 4 is a structural schematic diagram of the second state of the button of the application;

[0017] Figure 5 is a structural schematic diagram of the first state of the button according to the first embodiment of the application;

[0018] Figure 6 is a structural schematic diagram of the second state of the button according to the first embodiment of the application;

[0019] Figure 7 is a structural schematic diagram of the first state of the button according to the second embodiment of the application;

[0020] Figure 8 is a structural schematic diagram of the second state of the button according to the second embodiment of the application; ​

[0021] Figure 9 is a structural schematic diagram of a first state of a key according to the third embodiment of the present application;

[0022] Figure 10 is a structural schematic diagram of a second state of a key according to the third embodiment of the present application;

[0023] Figure 11 is a partial structural schematic diagram of a frame according to an embodiment of the present application;

[0024] Figure 12 is a partial structural schematic diagram of an electronic device according to an embodiment of the present application.

[0025] Correspondence between reference signs in the drawings and component names is as follows:

[0026] Figures 1 to 12 Correspondence between reference signs in the drawings and component names is as follows:

[0027] 100 key, 110 elastic fixing part, 120 first conductive part, 130 second conductive part, 140 ion part, 150 elastic positioning part, 152 cavity, 160 fixed fitting part, 200 electronic device, 210 frame, 220 mainboard. DETAILED DESCRIPTION

[0028] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] The key 100 and the electronic device 200 according to the embodiments of the present application are described below. Figures 1 to 12 The key 100 and the electronic device 200 according to the embodiments of the present application are described below.

[0032] As shown in Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The key 100 according to some embodiments of the present application is used in the electronic device 200, which comprises: an elastic fixing part 110, the elastic fixing part 110 is provided with a touch area; a first conductive part 120; a second conductive part 130, one of the first conductive part 120 and the second conductive part 130 is used to connect the positive pole of the power supply of the electronic device 200, and the other of the first conductive part 120 and the second conductive part 130 is used to connect the negative pole of the power supply; an ion part 140, the ion part 140 is located between the first conductive part 120 and the second conductive part 130; wherein one of the first conductive part 120 and the second conductive part 130 is arranged correspondingly to the touch area.

[0033] In this embodiment, the key 100 comprises the elastic fixing part 110, the first conductive part 120, the second conductive part 130 and the ion part 140. Wherein the ion part 140 is located between the first conductive part 120 and the second conductive part 130, and one of the first conductive part 120 and the second conductive part 130 is arranged correspondingly to the touch area of the elastic fixing part 110. Since one of the first conductive part 120 and the second conductive part 130 is used to connect the positive pole of the power supply of the electronic device 200, and the other of the first conductive part 120 and the second conductive part 130 is used to connect the negative pole of the power supply. Therefore, under the condition of power on, the free-moving cations in the ion part 140 will move to the conductive part of the negative pole under the attraction of the coulomb force, and the anions will move to the conductive part of the positive pole, thereby forming an EDL (Electrical double layer, double layer).

[0034] In this way, after the user touches the touch area, the touch area is pressed and deformed to extrude the conductive part and the ion part 140 corresponding to it, so that the actual contact area of the first conductive part 120, the second conductive part 130 and the ion part 140 changes, the number of ions in contact also changes, resulting in a change in the EDL capacitor, based on the corresponding relationship between the size of the pressure and the capacitance value, the mainboard 220 of the electronic device 200 senses the change in capacitance and realizes different functions.

[0035] Among them, the capacitance of the double electric layer is 1000 times higher than the capacitance value of the pressure button of the same size in the related art, which can significantly improve the sensitivity and signal-to-noise ratio of the button 100. The button 100 has extremely high pressure response sensitivity, signal-to-noise ratio, anti-interference and pressure resolution, and can realize the sensing of small pressure changes.

[0036] In addition, this setting has the advantages of low cost and high reliability, and lower process requirements.

[0037] Figure 3 、 Figure 5 、 Figure 7 and Figure 9 is a structural schematic diagram in the case where the button 100 is not touched, Figure 4 、 Figure 6 、 Figure 8 and Figure 10 is a structural schematic diagram in the case where the button 100 is touched.

[0038] Specifically, as shown in Figure 1 、 Figure 2 and Figure 3 , in the case where the button 100 is powered on, that is, one of the first conductive part 120 and the second conductive part 130 is connected to the positive electrode of the power supply of the electronic device 200, and the other of the first conductive part 120 and the second conductive part 130 is connected to the negative electrode of the power supply, one of the first conductive part 120 and the second conductive part 130 carries a positive charge, and the other of the first conductive part 120 and the second conductive part 130 carries a negative charge. Under the attraction of the Coulomb force, the free-moving cations in the ion part 140 will move to the conductive part of the negative electrode, and the anions will move to the conductive part of the positive electrode, thereby forming a double electric layer.

[0039] As shown in Figure 4 , under the same test voltage, the external pressure load changes the actual contact area of the first conductive part 120, the second conductive part 130 and the ion part 140, resulting in a change in the EDL capacitor formed, thereby sensing the size of the pressure.

[0040] It can be understood that the elastic fixing portion 110 has elasticity, so that after pressing the touch area of the elastic fixing portion 110, the elastic fixing portion 110 will be deformed. When the force acting on the touch area of the elastic fixing portion 110 is removed, the elastic fixing portion 110 restores the deformation.

[0041] Wherein, the ion portion 140 is an ion material, the ion portion 140 includes cations and anions; the first conductive portion 120 and the second conductive portion 130 as electrodes contain surface charges (may be positive or negative charges). As shown in Figure 2 The capacitance value is the capacitance value formed by the surface charges of the first conductive portion 120 and the second conductive portion 130 and the opposite charges in the ion portion 140; the resistance refers to the resistance value between the first conductive portion 120 and the second conductive portion 130.

[0042] As shown in Figure 5 And Figure 6 One of the first conductive portion 120 and the second conductive portion 130 contains positive charges, and the other of the first conductive portion 120 and the second conductive portion 130 contains negative charges. The first conductive portion 120 and the second conductive portion 130 are the main bodies of the double-capacitance, and the ion portion 140 is also the main body of the double-capacitance, and the ion portion 140 includes cations and anions.

[0043] When pressure acts on the touch area of the elastic fixing portion 110, the elastic fixing portion 110 is deformed, at this time, the contact area of the first conductive portion 120, the second conductive portion 130 and the ion portion 140 increases, the number of ions contacted by the first conductive portion 120, the second conductive portion 130 and the ion portion 140 increases, so that the capacitance value of the double-capacitance changes, based on the corresponding relationship between the pressure size and the capacitance value, different functions are realized.

[0044] In the related art, the capacitive pressure button converts the external pressure signal into a change signal of the capacitance, and the capacitive pressure button is mainly based on a parallel plate capacitor. The calculation formula of the capacitance C is as follows (wherein ε0 is the vacuum dielectric constant, ε r is the dielectric constant between the two parallel electrode plates, S is the overlapping area between the two electrode plates, and d is the distance between the two electrode plates):

[0045]

[0046] The capacitive pressure button realizes various functions by sensing the change of the capacitance value, and the formula is as follows:

[0047]

[0048] Wherein, ΔC is the capacitance value change, d0 is the initial distance between the two electrode plates, and △d is the distance change value.

[0049] The key 100 of the present application is different from the capacitive pressure key in the related art. The key 100 of the present application utilizes the electric double layer capacitance between the first conductive part 120, the second conductive part 130 and the ion part 140 to realize pressure sensing. The capacitance size of the electric double layer capacitance is 1000 times higher than the capacitance value of the pressure key of the same size using the parallel plate capacitor in the related art, which can significantly improve the sensitivity and signal-to-noise ratio of the key 100.

[0050] In some embodiments, as shown in Figures 5 to 10 at least a part of the first conductive part 120 is located on the first side of the ion part 140, and at least a part of the second conductive part 130 is located on the second side of the ion part 140. The part of the first conductive part 120 on the first side is correspondingly arranged with the part of the second conductive part 130 on the second side. The conductive part on the first side or the conductive part on the second side is correspondingly arranged with the touch area.

[0051] In specific applications, the ion part 140 has a first side and a second side. At least a part of the first conductive part 120 is located on the first side of the ion part 140, and at least a part of the second conductive part 130 is located on the second side of the ion part 140. The conductive part on the first side of the ion part 140 or the conductive part on the second side of the ion part 140 is correspondingly arranged with the touch area. That is, at least a part of the first conductive part 120 is correspondingly arranged with at least a part of the second conductive part 130. In this way, after the touch area of the elastic fixing part 110 is pressed, the contact area and the number of ions contacted between the first conductive part 120 and the ion part 140 are changed, and the contact area and the number of ions contacted between the second conductive part 130 and the ion part 140 are changed. An effective and reliable structural support is provided for the change of the EDL capacitance.

[0052] Specifically, as shown in Figures 5 to 8 the first conductive part 120 is located on the first side of the ion part 140, and the second conductive part 130 is located on the second side of the ion part 140. The first conductive part 120 is correspondingly arranged with the touch area.

[0053] Specifically, as shown in Figure 9 and Figure 10 the ion part 140 has a first side, a second side, a third side and a fourth side. A part of the first conductive part 120 is located on the first side of the ion part 140, and another part of the first conductive part 120 is located on the third side of the ion part 140. A part of the second conductive part 130 is located on the second side of the ion part 140, and another part of the second conductive part 130 is located on the fourth side of the ion part 140. The part of the first conductive part 120 on the first side is correspondingly arranged with the part of the second conductive part 130 on the second side, and the part of the first conductive part 120 on the third side is correspondingly arranged with the part of the second conductive part 130 on the fourth side.

[0054] In some embodiments, as shown in Figures 5 to 10 The key 100 further comprises an elastic positioning part 150, in which a cavity 152 is arranged, and the ion part 140 is located in the cavity 152.

[0055] In specific applications, the key 100 further comprises the elastic positioning part 150, which has the cavity 152 for accommodating the ion part 140. Since the elastic positioning part 150 is elastic, when the touch area is pressed, the elastic positioning part 150 will be deformed under force. When the force acting on the touch area is removed, the elastic positioning part 150 will restore the deformation. This arrangement provides effective and reliable structural support for changing the contact area and the number of ions contacted by the first conductive part 120, the second conductive part 130, and the ion part 140.

[0056] In addition, the ion part 140 is located in the cavity 152, and the elastic positioning part 150 has the functions of fixing and accommodating the ion part 140, preventing the ion part 140 from leaking, and ensuring the safety and reliability of the product in use.

[0057] Specifically, the cavity 152 is a closed structure to effectively prevent the ion part 140 from leaking.

[0058] In some embodiments, as shown in Figure 5 and Figure 6 The ion part 140 stores an ionic liquid.

[0059] In specific applications, the ion part 140 stores an ionic liquid, which is a salt that is in a liquid state at room temperature or near room temperature, commonly known as room temperature ionic liquid or room temperature molten salt, simply referred to as ionic liquid. The ions in the ionic liquid include organic cations, organic anions, or inorganic anions. Due to the large volume difference between the anions and cations in the ionic liquid, the structure is not symmetrical, and the electrostatic attraction between the anions and cations is small, so the ions can move freely at room temperature and form a liquid state.

[0060] In some embodiments, as shown in Figures 7 to 10 The ion part 140 comprises an ionic gel film or an ionic fabric.

[0061] In specific applications, the ion part 140 comprises an ionic gel film, specifically, the ionic liquid is mixed with a high polymer monomer, and finally the high polymer monomer undergoes a polymerization reaction (including free radical, cation, anion initiation, etc.) to form an ionic gel film.

[0062] The ion part 140 comprises an ionic gel film or an ionic fabric, which is not prone to liquid leakage, has high safety and reliability in use.

[0063] In some embodiments, as shown in Figures 5 to 8As shown, when the ion section 140 stores ionic liquid, the elastic positioning section 150 is located between the first conductive section 120 and the ion section, and the elastic positioning section 150 is located between the second conductive section 130 and the ion section.

[0064] In specific applications, when the ion section 140 stores ionic liquid, the elastic positioning section 150 is located between the first conductive section 120 and the ion section, and the elastic positioning section 150 is located between the second conductive section 130 and the ion section. The elastic positioning section 150 separates the first conductive section 120, the second conductive section 130 and the ion section 140. This improves the safety and reliability of the product while ensuring that the EDL capacitance can change after the user touches the touch area.

[0065] In some embodiments, when the ion section 140 includes an ion gel membrane or an ion fabric, the first conductive section 120 and the second conductive section 130 are both located within the chamber 152.

[0066] In specific applications, such as Figure 9 and Figure 10 As shown, when the ion section 140 includes an ion gel membrane or an ion fabric, the ion gel membrane or ion fabric is less prone to liquid leakage. Therefore, the first conductive section 120 and the second conductive section 130 are both located in the chamber 152, which helps to increase the capacitance value of the button 100 when it is pressed, and has the characteristics of higher sensitivity.

[0067] In some embodiments, such as Figure 7 and Figure 8 As shown, when the ion section 140 includes an ion gel membrane or an ion fabric, the elastic positioning section 150 is located between the first conductive section 120 and the ion section, and the elastic positioning section 150 is located between the second conductive section 130 and the ion section.

[0068] In specific applications, such as Figure 7 and Figure 8 As shown, when the ion section 140 includes an ion gel film or an ion fabric, the elastic positioning section 150 is located between the first conductive section 120 and the ion section, and the elastic positioning section 150 is located between the second conductive section 130 and the ion section. The elastic positioning section 150 separates the first conductive section 120, the second conductive section 130 and the ion section 140. This improves the safety and reliability of the product while ensuring that the EDL capacitance can change after the user touches the touch area.

[0069] In some embodiments, the ionogel membrane includes an ionic liquid, an acrylic resin, and an epoxy resin.

[0070] In specific applications, the ionic gel film comprises an ionic liquid, an acrylic resin, and an epoxy resin. The ionic gel film is formed by mixing an ionic liquid and a high polymer monomer (such as an acrylic resin, an epoxy resin, etc.) together, and then polymerizing the high polymer monomer (divided into free radical, cation, and anion initiation, etc.) to form the ionic gel film.

[0071] In some embodiments, the elastic positioning part 150 is a rubber positioning part, a fiber positioning part, or a plastic positioning part.

[0072] In specific applications, the elastic positioning part 150 is a rubber positioning part, a fiber positioning part, or a plastic positioning part, which can ensure that the elastic positioning part 150 can deform under pressure and can restore the deformation after the external force is removed. Moreover, the sealing of the cavity 152 formed in the elastic positioning part 150 can effectively prevent the ionic part 140 from leaking, thereby ensuring the safety and reliability of the product in use.

[0073] In some embodiments, as shown in FIG. 1A, the key 100 further comprises a fixed fitting part 160, and the first conductive part 120, the second conductive part 130, and the ionic part 140 are located between the elastic fixing part 110 and the fixed fitting part 160. Figures 5 to 10

[0074] In specific applications, the key 100 further comprises the fixed fitting part 160, and the first conductive part 120, the second conductive part 130, and the ionic part 140 are located between the elastic fixing part 110 and the fixed fitting part 160. The elastic fixing part 110 and the fixed fitting part 160 have the functions of protecting and fixing the first conductive part 120, the second conductive part 130, and the ionic part 140 located therein, so that the key 100 is a whole, and the direct action of external force on the first conductive part 120, the second conductive part 130, and the ionic part 140 can be prevented, thereby preventing the key 100 from being damaged and prolonging the service life of the product.

[0075] In some embodiments, the elastic fixing part 110 comprises one or a combination of the following: an acrylic resin and an epoxy resin.

[0076] In some embodiments, at least one of the first conductive part 120 and the second conductive part 130 is an indium tin oxide layer.

[0077] In specific applications, the first conductive part 120 is an indium tin oxide layer, or the first conductive part 120 is an indium tin oxide layer, or both the first conductive part 120 and the second conductive part 130 are indium tin oxide layers. The indium tin oxide layer can conduct electricity and serve as an electrode of the key 100. ​

[0078] Specifically, by Figures 5 to 6 This demonstrates the directional movement of anions and cations in the ionic liquid within chamber 152 after pressure is applied to the touch area. The contact area between the positive conductive portion and the anions, located between the elastic fixing portion 110 and the elastic positioning portion 150, is increased; and the contact area between the negative conductive portion and the cations, also located between the elastic fixing portion 110 and the elastic positioning portion 150, is increased. This alters the formed EDL capacitance, thereby sensing the magnitude of the pressure. The arrows indicate the direction of the force.

[0079] Specifically, by Figures 7 to 8 This demonstrates the directional movement of anions and cations in the ionogel membrane within chamber 152 after pressure is applied to the touch area. The contact area between the positive conductive portion (located between the elastic fixing portion 110 and the elastic positioning portion 150) and the anions is increased; similarly, the contact area between the negative conductive portion (located between the elastic fixing portion 110 and the elastic positioning portion 150) and the cations is increased. This alters the formed EDL capacitance, thereby sensing the magnitude of the pressure. The arrows indicate the direction of the force.

[0080] Specifically, by Figures 9 to 10 When pressure is applied to the touch area, the anions and cations in the ionogel membrane within chamber 152 move directionally. This increases the contact area between the positive conductive part and the anions, and the contact area between the negative conductive part and the cations within chamber 152. This changes the formed EDL capacitance, thereby sensing the magnitude of the pressure. The arrows indicate the direction of the force.

[0081] like Figure 12 As shown, an electronic device 200 according to some embodiments of this application includes: a button 100 as described in any of the above embodiments.

[0082] The electronic device 200 provided in this application includes the button 100 of any embodiment, and therefore has all the beneficial effects of the button 100 described above, which will not be described one by one here.

[0083] Specifically, electronic device 200 can be a mobile terminal such as a mobile phone, wearable device, tablet computer, laptop computer, mobile computer, augmented reality device (also known as AR device), virtual reality device (also known as VR device), and handheld game console, etc.

[0084] In some embodiments, the electronic device 200 further includes: a power source, one of the first conductive portion 120 and the second conductive portion 130 being connected to the positive terminal of the power source, and the other of the first conductive portion 120 and the second conductive portion 130 being connected to the negative terminal of the power source.

[0085] In a specific application, the electronic device 200 further comprises a power supply having a positive pole and a negative pole, one of the first conductive part 120 and the second conductive part 130 is connected to the positive pole of the power supply, and the other of the first conductive part 120 and the second conductive part 130 is connected to the negative pole of the power supply. In the powered state, the first conductive part 120 and the second conductive part 130 of the key 100 are two electrodes with different polarities.

[0086] In some embodiments, as shown in FIG. 1, the electronic device 200 further comprises a frame 210, a part of the frame 210 forms the elastic fixing part 110; and a main board 220, a part of the main board 220 forms the fixed matching part 160 of the key 100. Figure 11

[0087] In a specific application, by reasonably setting the structure of the electronic device 200, a part of the frame 210 forms the elastic fixing part 110, and a part of the main board 220 forms the fixed matching part 160 of the key 100. That is, the existing structure (such as the frame 210 and the main board 220) of the electronic device 200 is reasonably utilized, avoiding additional investment in materials to form the elastic fixing part 110 and the fixed matching part 160, which is conducive to reducing the production cost of the product. At the same time, the structure setting can thin the thickness of the key 100, reduce the occupancy rate of the key 100 to the internal space of the electronic device 200, and facilitate the miniaturization design of the product.

[0088] In some embodiments, as shown in FIG. 1, the electronic device 200 further comprises a frame 210, a part of the frame 210 forms the elastic fixing part 110; and a main board 220, a part of the main board 220 forms the fixed matching part 160 of the key 100. Figure 12

[0089] In a specific application, by reasonably setting the structure of the electronic device 200, a part of the frame 210 forms the elastic fixing part 110, and a part of the main board 220 forms the fixed matching part 160 of the key 100. That is, the existing structure (such as the frame 210 and the main board 220) of the electronic device 200 is reasonably utilized, avoiding additional investment in materials to form the elastic fixing part 110 and the fixed matching part 160, which is conducive to reducing the production cost of the product. At the same time, the structure setting can thin the thickness of the key 100, reduce the occupancy rate of the key 100 to the internal space of the electronic device 200, and facilitate the miniaturization design of the product.

[0090] Specifically, as shown in FIG. 1, the frame 210 is locally electroplated with a ground treatment, and the frame 210 locally electroplated is used as the elastic fixing part 110. The electroplated material can be the first conductive part 120. Figure 11

[0091] Specifically, as shown in FIG. 1, the frame 210 is locally electroplated with a ground treatment, and the frame 210 locally electroplated is used as the elastic fixing part 110. The electroplated material can be the first conductive part 120. Figure 12 ​​​As shown, the fixed fitting part 160 can be a plated side frame on the main plate 220 or a separately set flexible circuit board. Among them, the pressure-sensitive control chip MCU (Microcontroller Unit) is pasted on the flexible circuit board, which controls the behavior when the key 100 is stressed. When the touch area on the frame 210 is stressed, the corresponding double-layer capacitance changes, and when the change value exceeds the critical value, the corresponding MCU will implement the corresponding pressure-sensitive function. The elastic positioning part 150 is fixed in the electronic device 200 in the form of assembly insertion, and the plated main plate 220 side is made of nickel or gold plating during the process in the plate factory.

[0092] Specifically, as shown in Figure 5 and Figure 6 , the key 100 includes an elastic fixing part 110, a first conductive part 120, a second conductive part 130, an ion part 140, an elastic positioning part 150 and a fixed fitting part 160. The first conductive part 120, the second conductive part 130 and the ion part 140 are located between the elastic fixing part 110 and the fixed fitting part 160, the ion part 140 is located between the first conductive part 120 and the second conductive part 130, and one of the first conductive part 120 and the second conductive part 130 is arranged corresponding to the touch area of the elastic fixing part 110. Among them, the elastic positioning part 150 is provided with a cavity 152, the ion part 140 is located in the cavity 152, the ion part 140 stores ion liquid, and the first conductive part 120 and the second conductive part 130 are located outside the elastic positioning part 150.

[0093] Specifically, as shown in Figure 7 and Figure 8 , the key 100 includes an elastic fixing part 110, a first conductive part 120, a second conductive part 130, an ion part 140, an elastic positioning part 150 and a fixed fitting part 160. The first conductive part 120, the second conductive part 130 and the ion part 140 are located between the elastic fixing part 110 and the fixed fitting part 160, the ion part 140 is located between the first conductive part 120 and the second conductive part 130, and one of the first conductive part 120 and the second conductive part 130 is arranged corresponding to the touch area of the elastic fixing part 110. Among them, the elastic positioning part 150 is provided with a cavity 152, the ion part 140 is located in the cavity 152, the ion part 140 includes ion gel film or ion fabric, and the first conductive part 120 and the second conductive part 130 are located outside the elastic positioning part 150.

[0094] The ion part 140 includes ion gel film or ion fabric, which is not prone to liquid leakage, has the advantages of high safety and high reliability.

[0095] Specifically, as shown in Figure 9 and Figure 10As shown, the key 100 includes an elastic fixing part 110, a first conductive part 120, a second conductive part 130, an ion part 140, an elastic positioning part 150, and a fixing matching part 160. The first conductive part 120, the second conductive part 130, and the ion part 140 are all located between the elastic fixing part 110 and the fixing matching part 160, the ion part 140 is located between the first conductive part 120 and the second conductive part 130, and one of the first conductive part 120 and the second conductive part 130 is arranged corresponding to the touch area of the elastic fixing part 110. Among them, the elastic positioning part 150 is provided with a cavity 152, the ion part 140, the first conductive part 120, and the second conductive part 130 are all located in the cavity 152, and the ion part 140 includes an ion gel film or an ion fabric.

[0096] The first conductive part 120 and the second conductive part 130 are both located in the cavity 152, which is conducive to increasing the capacitance value of the key 100 when it is pressed, and has the characteristics of higher sensitivity.

[0097] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A key for an electronic device, characterized by comprising: The key comprises: an elastic fixing part provided with a touch area; a first conductive part; a second conductive part, one of the first conductive part and the second conductive part is used for connecting a positive pole of a power supply of the electronic device, and the other of the first conductive part and the second conductive part is used for connecting a negative pole of the power supply; an ionic part between the first conductive part and the second conductive part; an elastic positioning part provided with a cavity, the ionic part is located in the cavity, the cavity is a closed structure, and the elastic positioning part is used for separating the first conductive part, the second conductive part and the ionic part; the ionic part stores an ionic liquid; or the ionic part comprises an ionic gel film or an ionic fabric; wherein one of the first conductive part and the second conductive part is arranged corresponding to the touch area.

2. The key according to claim 1, wherein: at least a part of the first conductive part is located on a first side of the ionic part; at least a part of the second conductive part is located on a second side of the ionic part, and the part of the first conductive part on the first side is arranged corresponding to the part of the second conductive part on the second side; wherein the conductive part on the first side or the conductive part on the second side is arranged corresponding to the touch area.

3. The key according to claim 1 or 2, wherein: when the ionic part stores the ionic liquid, the elastic positioning part is located between the first conductive part and the ionic part, and the elastic positioning part is located between the second conductive part and the ionic part.

4. The key according to claim 1 or 2, wherein: when the ionic part comprises the ionic gel film or the ionic fabric, the first conductive part and the second conductive part are both located in the cavity.

5. The key according to claim 1 or 2, wherein: when the ionic part comprises the ionic gel film or the ionic fabric, the elastic positioning part is located between the first conductive part and the ionic part, and the elastic positioning part is located between the second conductive part and the ionic part.

6. The key according to claim 1 or 2, wherein: when the ionic part comprises the ionic gel film, the ionic gel film comprises an ionic liquid, an acrylic resin and an epoxy resin; and / or the elastic positioning part is a rubber positioning part, a fiber positioning part or a plastic positioning part.

7. The key according to claim 1 or 2, characterized in that Further comprising: a fixed fitting part, the first conductive part, the second conductive part and the ionic part are all located between the elastic fixing part and the fixed fitting part.

8. The key according to claim 1 or 2, wherein: the elastic fixing part comprises one or a combination of the following: an acrylic resin and an epoxy resin; and / or at least one of the first conductive part and the second conductive part is an indium tin oxide layer.

9. An electronic device, comprising: The key comprises: the key according to any one of claims 1 to 8.

10. The electronic device of claim 9, wherein, Further comprising: a power supply, one of the first conductive part and the second conductive part is connected to a positive pole of the power supply, and the other of the first conductive part and the second conductive part is connected to a negative pole of the power supply.

11. The electronic device of claim 9, wherein, Further comprising: A frame, a portion of the frame forming the elastic fixing part; A main board, a portion of the main board forming the fixed matching part of the key.

12. The electronic device of claim 9, wherein, Also includes: A frame, a portion of the frame forming the elastic fixing part; A flexible circuit board, a portion of the flexible circuit board forming the fixed matching part of the key.

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