CN211427311U

CN211427311U - Key structure and key module

Info

Publication number: CN211427311U
Application number: CN202020553588.4U
Authority: CN
Inventors: 徐锋; 孙坤; 魏新
Original assignee: Pairui Electronic Technology Suzhou Co ltd
Current assignee: Pairui Electronic Technology Suzhou Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-09-04
Anticipated expiration: 2030-04-15

Abstract

The application provides a button structure and button module, include: a base layer; the two support structures are arranged on the substrate layer at intervals; the first elastic film layer covers the two support structures and is connected with the two support structures, and the two support structures and the first elastic film layer define an abdicating space on the substrate layer; the upper electrode is arranged on the lower surface of the first elastic film layer and is positioned in the abdicating space; a lower electrode disposed on the base layer and located in the abdicating space; the variable resistance elastic body is arranged on the lower surface of the upper layer electrode or the upper surface of the lower layer electrode and is positioned in the abdicating space; the variable resistance elastic body is used for connecting the upper electrode with the lower electrode when the first elastic film layer elastically deforms towards the direction of the lower electrode so as to generate a first key signal related to the elastic deformation of the variable resistance elastic body.

Description

Key structure and key module

Technical Field

The application relates to the technical field of key structure design, in particular to a key structure and a key module.

Background

The keys of the existing game keyboard generally trigger signals in the form of a film resistor type, a relay or a capacitor through metal elastic sheets, and usually only have two states of opening and closing, so that the stress change process of different degrees of operation reflected in the keys of the game keyboard in a game cannot be realized.

SUMMERY OF THE UTILITY MODEL

An object of the embodiments of the present application is to provide a key structure and a key module, which are used to solve the problem that the keys of the current game keyboard only have two states of opening and closing, and cannot realize the stress change process of different degrees of operations reflected in the keys of the game keyboard in the game.

In a first aspect, an embodiment of the present invention provides a key structure, including: a base layer; two support structures arranged on the base layer at intervals; the first elastic film layer covers the two support structures and is connected with the two support structures, and the two support structures and the first elastic film layer define an abdicating space on the substrate layer; the upper electrode is arranged on the lower surface of the first elastic film layer and is positioned in the abdicating space; a lower electrode disposed on the base layer and located in the abdicating space; the variable resistance elastic body is arranged on the lower surface of the electrode on the upper layer or the upper surface of the electrode on the lower layer and is positioned in the abdicating space; the variable resistance elastic body is used for connecting the upper electrode with the lower electrode when the first elastic film layer elastically deforms towards the direction of the lower electrode so as to generate a first key signal related to the elastic deformation of the variable resistance elastic body.

In the key structure with the design, the upper electrode is arranged on the lower surface of the first elastic film layer, the lower electrode and the variable resistance elastic body are arranged on the upper surface of the substrate layer, the upper electrode moves down along with the first elastic film layer when the first elastic film layer is bent, pressure is applied to the variable resistance elastic body, the variable resistance elastic body can be changed into a conductive body from an insulator after being pressed, so that the upper electrode and the lower electrode are conducted, the resistance value of the variable resistance elastic body is related to the pressed value or the deformation quantity of the variable resistance elastic body, and further, on the premise of realizing two states of key opening and closing, operations of different degrees in a game can be reflected as the stress change process of the game keyboard keys, the pressure continuous change adjustment of the game keys is realized, the control of the pressing degree of a user in the game is further improved, and the game experience is improved.

In an optional embodiment of the first aspect, the lower electrode includes a first lower electrode and a second lower electrode disposed at an interval, the first lower electrode and the second lower electrode are both opposite to the upper electrode, and the variable resistance elastomer is disposed on the second lower electrode; the first lower electrode is used for contacting the upper electrode when the first elastic film layer is elastically deformed inwards so as to generate a second key signal; the second lower electrode is used for contacting the upper electrode through the variable resistance elastic body when the first elastic film layer is elastically deformed so as to generate a first key signal related to the elastic deformation of the variable resistance elastic body.

In the embodiment of the above design, the opening and closing functions of the ordinary keyboard can be realized by the upper layer electrode and the first lower layer electrode, the pressure change adjusting function during the game can be realized by the upper layer electrode, the variable resistance elastic body and the second lower layer electrode 502, the ordinary keyboard and the game keyboard can be integrated, and further the problem that the ordinary keyboard and the game keyboard are in a normal state which is designed independently under ordinary conditions is solved, and the cost for purchasing two keyboards and the problem that the keyboard needs to be replaced under the game and the ordinary state are solved for users.

In an optional implementation manner of the first aspect, the upper layer electrode includes a first upper layer electrode and a second upper layer electrode that are disposed at an interval, the first upper layer electrode is opposite to the first lower layer electrode, and the second upper layer electrode is opposite to the second lower layer electrode.

In an alternative embodiment of the first aspect, the first upper electrode has a thickness greater than the second upper electrode or the first lower electrode has a thickness greater than the second lower electrode.

In an alternative embodiment of the first aspect, the second lower electrode is arranged around the first lower electrode.

In an optional implementation manner of the first aspect, the upper layer electrode includes a first upper layer electrode and a second upper layer electrode that are arranged at an interval, the lower layer electrode includes a first lower layer electrode and a second lower layer electrode that are arranged at an interval, the first upper layer electrode and the first lower layer electrode are opposite, the second upper layer electrode and the second lower layer electrode are opposite, and the variable resistance elastomer is arranged on the first upper layer electrode; the first lower layer electrode is used for contacting with the first upper layer electrode through the variable resistance elastomer when the first elastic film layer is elastically deformed inwards so as to generate a first key signal related to the elastic deformation of the variable resistance elastomer; the second lower electrode is used for contacting with the second upper electrode when the first elastic film layer is elastically deformed inwards so as to generate a second key signal.

In an alternative embodiment of the first aspect, the second upper electrode has a thickness greater than the first upper electrode or the second lower electrode has a thickness greater than the first lower electrode.

In an optional implementation manner of the first aspect, the lower layer electrodes include a first lower layer electrode and at least two second lower layer electrodes, the at least two second lower layer electrodes are disposed on the first elastic thin film layer at intervals, each of the second lower layer electrodes is disposed with one variable resistance elastic body, the number of the variable resistance elastic bodies is the same as that of the second lower layer electrodes, and the first lower layer electrode covers each of the variable resistance elastic bodies and is opposite to the upper layer electrode.

In an optional implementation manner of the first aspect, the substrate layer includes a substrate and a second elastic thin film layer, the second elastic thin film layer is disposed on the substrate, the two supporting structures are disposed on the second elastic thin film layer at intervals, and the yielding space is defined by the two supporting structures and the first elastic thin film layer on the second elastic thin film layer.

In an optional implementation manner of the first aspect, the key structure further includes a pressing mechanism, and the pressing mechanism includes an elastic pressing portion, an elastic abutting portion, and two elastic supporting portions; the upper ends of the two elastic supporting parts are connected to the lower surface of the elastic pressing part at intervals, and the lower ends of the two elastic supporting parts are respectively arranged on the first elastic film layer and are respectively opposite to the two supporting structures; the elastic abutting part is arranged on the lower surface of the elastic pressing part and located between the two elastic supporting parts, and the elastic abutting part is opposite to the abdicating space so as to extrude the first elastic film layer towards the lower-layer electrode.

In an alternative embodiment of the first aspect, the lower surface of the elastic abutment portion is smoothly curved.

In a second aspect, an embodiment of the present invention provides a key module, including any one of the foregoing embodiments, the key structure and a key signal generating circuit, the key signal generating circuit is respectively electrically connected to an upper electrode and a lower electrode of the key structure, so that the upper electrode passes through the variable resistance elastomer and the lower electrode are turned on to generate a first key signal related to an elastic deformation amount of the variable resistance elastomer.

In the key module of above-mentioned design, through set up upper electrode at first elastic film layer lower surface, set up lower floor electrode and variable resistance elastomer at the upper surface of stratum basale, upper electrode can move down along with first elastic film layer when utilizing first elastic film layer to take place the inflection, and then exert pressure to the variable resistance elastomer, the variable resistance elastomer can become the conductor by the insulator after receiving pressure and then impel upper electrode and lower floor electrode to switch on, and its resistance value is relevant rather than receiving pressure or its deformation volume, and then under the promotion that realizes two kinds of states of button switching, can reflect the operation of different degrees in the recreation as the atress change process of recreation keyboard button, the pressure continuous change regulation of recreation button has been realized, and then improve the control of user to the degree of pressing when the recreation, the sense of experience of playing has been improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a first schematic view of a key structure according to a first embodiment of the present application;

fig. 2 is a second schematic view of a key structure according to a first embodiment of the present application;

fig. 3 is a third schematic view of a key structure according to the first embodiment of the present application;

fig. 4 is a fourth schematic view of a key structure according to the first embodiment of the present application;

fig. 5 is a fifth schematic view of a key structure according to the first embodiment of the present application;

fig. 6 is a sixth schematic view of a key structure according to the first embodiment of the present application;

fig. 7 is a seventh schematic view of a key structure according to the first embodiment of the present application;

fig. 8 is an eighth schematic view of a key structure according to the first embodiment of the present application;

fig. 9 is a ninth schematic view of a key structure according to the first embodiment of the present application;

fig. 10 is a first schematic view of a key module according to a second embodiment of the present application;

fig. 11 is a second schematic view of a key module according to a second embodiment of the present application;

fig. 12 is a third schematic view of a key module according to a second embodiment of the present application;

fig. 13 is a fourth schematic view of a key module according to a second embodiment of the present application.

Icon: 10-a base layer; 101-a substrate; 102-a second elastic film layer; 20-a support structure; 30-a first elastic film layer; 40-upper electrode; 401 — first upper electrode; 402-a second upper electrode; 50-a lower electrode; 501-first lower electrode; 502-a second lower electrode; 60-variable resistance elastomers; 70-abdicating space; 80-a pressing mechanism; 801-an elastic pressing part; 802-a resilient abutment; 803-an elastic support; 200-key signal generating circuit.

Detailed Description

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

First embodiment

As shown in fig. 1 and fig. 2, the present application provides a key structure, which includes a substrate layer 10, two support structures 20, a first elastic film layer 30, an upper electrode 40, a lower electrode 50 and a variable resistance elastomer 60, the two support structures 20 are arranged on the substrate layer 10 at intervals, the first elastic film layer 30 covers the two support structures 20 and is connected with the two support structures 20, the two support structures 20 and the first elastic film layer 30 define an abdicating space 70 on the substrate layer 10, the upper electrode 40 is disposed on the lower surface of the first elastic film layer 30 and located in the relief space 70, the lower electrode is disposed on the base layer 10 and located in the relief space 70, and the variable resistance elastomer 60 is disposed on the lower surface of the upper electrode (as shown in fig. 2) or disposed on the upper surface of the lower electrode (as shown in fig. 1) and located in the relief space 70.

Wherein the material of the variable resistance elastomer 60 is a carbon-based polymer material, such as graphene or Quantum Tunneling Composite (QTC), and the variable resistance elastomer 60 belonging to the above material belongs to an insulator in a normal state, that is, when not subjected to an external pressing force; the distance between the particles and the distribution of the variable resistance elastic body 60 change when an external pressing force is applied, and the variable resistance elastic body 60 changes into a conductor, and the resistance value of the variable resistance elastic body 60 is inversely related to the pressure applied, that is, the resistance value is smaller when the pressing force is larger. Taking the quantum tunneling composite material as an example, the principle of generating conductivity is the field induced quantum tunneling phenomenon, in the QTC composite material, the metal particles are very closely distributed in the matrix, but do not contact with each other, and when pressed or deformed, the distance between the metal particles is reduced to a distance that electrons can be transferred between the metal particles, thereby having conductivity.

On the basis of the above description, when the key structure designed by this scheme is pressed by a user, that is, when the first elastic film layer 30 is pressed, the first elastic film layer 30 will flex, the upper electrode 40 disposed on the lower surface of the first elastic film layer 30 will move down with the flexing of the first elastic film layer 30, and with the downward movement of the upper electrode 40, the upper electrode 40 will squeeze the variable resistance elastic body 60, and the variable resistance elastic body 60 will change into a conductor after squeezing to conduct the upper electrode 40 and the lower electrode 50, so as to realize the on-off switching of the switch, meanwhile, because the magnitude of the pressure in the above process is a continuously changing process, the resistance of the variable resistance elastic body 60 will change accordingly, so as to generate a first key signal, which is related to the elastic deformation of the variable resistance elastic body 60, and further, the stress change process of the game keyboard keys can be reflected by operations of different degrees in the game.

Taking the different degrees of operations in the game, such as the exertion degree in the game fighting as an example, the stress variation reflected in the game keyboard is that the exertion degree of the user on the keyboard can be transmitted to the game, and then the exertion degree of the character in the game fighting can be mastered, for example, the greater the exertion degree of the user on the keyboard, the greater the exertion degree of the character in the game fighting, and the like. According to the key structure with the design, the resistance of the variable resistance elastic body 60 can be changed along with the change of the key force of the user, so that a first key signal related to the deformation of the variable resistance elastic body 60, namely the resistance value is generated, namely the first key signal can be changed along with the change according to the difference of the resistance value, and then the change of the force degree in the game can be realized when the game related processing is carried out according to the first key signal subsequently, so that the force degree of the character in the game fighting can be changed.

In an alternative embodiment of this embodiment, as shown in fig. 3, the lower electrode 50 includes a first lower electrode 501 and a second lower electrode 502 that are disposed at an interval, the first lower electrode 501 and the second lower electrode 502 are both opposite to the upper electrode 40, and the variable-resistance elastic body 60 is disposed on the second lower electrode 502.

In the key structure with the above design, when in use, the first elastic film layer 30 bends, the upper layer electrode 40 moves downwards along with the first elastic film layer, the upper layer electrode 40 contacts with the first lower layer electrode 501, and after the upper layer electrode 40 contacts with the first lower layer electrode 501, the upper layer electrode 40 is conducted with the first lower layer electrode 501 to generate a second key signal; meanwhile, the upper electrode 40 also generates a force on the variable resistance elastic body 60 disposed on the second lower electrode 502, and the variable resistance elastic body 60 is changed from an insulator to a conductor, according to the principle described above, at this time, the upper electrode 40 and the second lower electrode 502 are also conducted and the first key signal related to the deformation amount of the variable resistance elastic body 60 is generated. Thus, the opening and closing functions of the common keyboard can be realized through the upper layer electrode 40 and the first lower layer electrode 501, and the pressure change adjusting function during the game can be realized through the upper layer electrode 40, the variable resistance elastic body 60 and the second lower layer electrode 502, so that the common keyboard and the game keyboard can be fused by the key structure designed by the embodiment, the problem that the common keyboard and the game keyboard are in a normal state which is designed independently under the common condition is solved, and the problems that the cost for purchasing the two keyboards and the trouble that the keyboard needs to be replaced under the game and the common state are solved for users.

In the above-mentioned key structure, a switch button for normal function and game function can be designed on the integrated keyboard, and when the switch button is switched to the normal function, only the second key signal generated by the upper electrode 40 and the first lower electrode 501 can be received; when the game function is switched to, only the first key signal generated by the upper electrode 40 and the second lower electrode 502 can be received.

In an alternative embodiment of this embodiment, as shown in fig. 4, the upper layer electrode 40 may include a first upper layer electrode 401 and a second upper layer electrode 402 that are arranged at intervals, the first upper layer electrode 401 is opposite to the first lower layer electrode 501, and the second upper layer electrode 402 is opposite to the second lower layer electrode 502.

In the key structure designed in the above embodiment, when in use, the first upper electrode 401 and the second upper electrode 402 move downward when the first elastic film layer 30 is bent, so that the first upper electrode 401 is in contact with and conducted to the first lower electrode 501 to generate a second key signal, and the second upper electrode 402 generates an acting force on the variable resistance elastic body 60 to be conducted to the second lower electrode 502 to generate a first key signal related to the deformation of the variable resistance elastic body 60.

In the embodiment of the design, the upper electrode and the lower electrode are respectively arranged into two, one pair of upper and lower electrodes generates a first key signal, and the other pair of upper and lower electrodes generates a second key signal, so that the upper electrode is more accurately contacted with the lower electrode, and the problem of poor contact possibly caused by the fact that one upper electrode is relative to a plurality of lower electrodes is avoided.

In an optional implementation manner of this embodiment, the thickness of the first upper electrode 401 is greater than that of the second upper electrode 402 or the thickness of the first lower electrode 501 is greater than that of the second lower electrode 502, and since the variable resistance elastic body 60 is disposed on the second lower electrode 502 and the variable resistance elastic body 60 has a certain thickness, the thickness of the first upper electrode 401 may be designed to be thicker than that of the second upper electrode 402 or the thickness of the first lower electrode 501 may be designed to be thicker than that of the second lower electrode 502, so that a problem that the first upper electrode 401 does not contact the first lower electrode 501 at this time due to the thickness of the variable resistance elastic body 60 when the second upper electrode 402 contacts the variable resistance elastic body 60 can be effectively avoided.

In an alternative embodiment of this embodiment, as shown in fig. 5, the second lower electrode 502 is disposed around the first lower electrode 501. In addition to the first lower electrode 501 and the second lower electrode 502 shown in fig. 3, the lower electrode may be formed in an annular shape and the second lower electrode 502 may be provided around the first lower electrode 501, and in this case, the variable resistance elastic body 60 may be formed in an annular shape similar to the second lower electrode 502 and may be further provided on the second lower electrode 502.

In an alternative embodiment of this embodiment, as shown in fig. 6, in addition to the variable resistance elastic body 60 provided on the second lower electrode 502 shown in fig. 4, the variable resistance elastic body 60 may be provided on the first upper electrode 401, and when the variable resistance elastic body 60 is provided on the first upper electrode 401, the thickness of the second upper electrode 402 may be designed to be larger than that of the first upper electrode 401 or the thickness of the second lower electrode 502 may be designed to be larger than that of the first lower electrode 501 to avoid the problem of poor contact due to the thickness of the variable resistance elastic body 60. Of course, the variable resistance elastic body 60 may be disposed on the second upper electrode 402 or the first lower electrode 501.

In an alternative embodiment of this embodiment, in addition to the structure of the lower electrode 50 described above, the lower electrode 50 may also be a first lower electrode 501 and at least two second lower electrodes 502 as shown in fig. 7, the at least two second lower electrodes 502 are disposed on the base layer 10 at intervals, a variable resistance elastic body 60 is disposed on each second lower electrode 502, the number of the variable resistance elastic bodies 60 is the same as that of the second lower electrodes 502, and the first lower electrode 501 covers each variable resistance elastic body 60 and is opposite to the upper electrode 40.

In the key structure designed above, during application, the upper layer electrode 40 moves downward along with the deflection of the first elastic film layer 30, and then contacts with the first lower layer electrode 501 to generate a corresponding second key signal and squeeze the first lower layer electrode 501, and the first lower layer electrode 501 covers the variable resistance elastic body 60 and the second lower layer electrode 502, so that the first lower layer electrode 501 squeezes the variable resistance elastic body 60 on each second lower layer electrode 502, the variable resistance elastic body is changed from an insulator to a conductor, and further the upper layer electrode 40, the first lower layer electrode 501 and the second lower layer electrode 502 are enabled to be conducted, and further the generation of the first key signal related to the deformation of the variable resistance elastic body 60 is triggered.

In an alternative embodiment of this embodiment, as shown in fig. 8, the substrate layer 10 includes a substrate 101 and a second elastic film layer 102, the second elastic film layer 102 is disposed on the substrate 101, two supporting structures 20 are disposed on the second elastic film layer 102 at intervals, and the two supporting structures 20 and the first elastic film layer 30 define the abdicating space 70 on the second elastic film layer 102. The first elastic film layer 30 and the second elastic film layer 102 may be made of polyimide, dacron resin, or the like, and may deform downward when pressed. Here, when only one base layer 10 is provided, the base layer 10 is made of an insulating material.

In an alternative embodiment of this embodiment, as shown in fig. 9, the key structure further includes a pressing mechanism 80, the pressing mechanism 80 includes an elastic pressing portion 801, an elastic abutting portion 802, and two elastic supporting portions 803, upper ends of the two elastic supporting portions 803 are connected to a lower surface of the elastic pressing portion 801 at intervals, lower ends of the two elastic supporting portions 803 are respectively disposed on the first elastic film layer 30 and are respectively opposite to the two supporting structures 20; the elastic abutting portion 802 is disposed on the lower surface of the elastic pressing portion 801 and located between the two elastic supporting portions 803, and the elastic abutting portion 802 is opposite to the yielding space 70. When in use, a user can press the elastic pressing portion 801 of the pressing mechanism 80, the two elastic supporting portions 803 are stressed to elastically deform and contract, and the elastic abutting portion 802 disposed on the lower surface of the elastic pressing portion 801 and opposite to the abdicating space 70 approaches the first elastic film layer 30, so as to generate an acting force on the first elastic film layer 30, so that the first elastic film layer 30 deforms toward the lower electrode. The length of the elastic support 803 and the height of the elastic contact portion 802 may be set according to actual conditions.

In an alternative embodiment of the present embodiment, the lower surface of the elastic abutting portion 802 is a smooth curved surface, and the material of the elastic pressing portion 801, the elastic abutting portion 802 and the two elastic supporting portions 803 may be rubber.

In an alternative embodiment of this embodiment, the pressing mechanism 80 may have other structures besides the above-mentioned structure, and only needs to apply an acting force to the first elastic film layer when the user presses down, for example, the elastic support 803 may have a springback structure with a spring, and drives the abutting portion to move down when the pressing portion is pressed down, and the springback returns after the pressing portion is released; the elastic contact portion 802 may not have a smooth curved surface, but may have a tapered shape.

In an optional embodiment of the present invention, the two supporting structures 20 may be two supporting members, such as rubber, which are separated from each other, or may be a glue used for fixedly connecting the first elastic film layer 30 and the substrate layer 10, and further form a glue layer according to the connected glue, so as to support the first elastic film layer 30 and separate a certain distance from the substrate layer 10, and further form the yielding space 70.

Second embodiment

As shown in fig. 10, the present application provides a key module, which includes the key structure described in the first embodiment and a key signal generating circuit 200, where the key signal generating circuit 200 can be electrically connected to the upper electrode 40 and the lower electrode 50 of the key structure, so as to generate a first key signal related to the elastic deformation amount of the variable resistance elastic body when the upper electrode is connected to the lower electrode through the variable resistance elastic body.

In the first embodiment, the connection between the key signal generating circuit 200 and the lower electrode 50 may be specifically as shown in fig. 11, where the key signal generating circuit 200 is electrically connected to the first lower electrode 501 and the second lower electrode 502 respectively, so as to generate a second key signal when the upper electrode 40 is connected to the first lower electrode 501 in the preset first mode; the first key signal is generated when the upper electrode 40 is turned on with the second lower electrode 502 through the variable resistance elastic body 60 in the preset second mode. Alternatively, as shown in fig. 12, the key signal generating circuit 200 is electrically connected to the first upper electrode 401, the second upper electrode 402, the first lower electrode 501 and the second lower electrode 502 of the key structure, respectively, for generating a second key signal when the second upper electrode 402 and the second lower electrode 502 are connected in the preset first mode; the second key signal is generated when the first upper electrode 401 is connected to the first lower electrode 501 through the variable resistance elastic body 60 in the preset second mode. Or as shown in fig. 13, the key signal generating circuit 200 is electrically connected to the upper layer electrode 40, the first lower layer electrode 501 and each second lower layer electrode 502 of the key structure, for generating a second key signal when the upper layer electrode 40 is connected to the first lower layer electrode 501 in the preset first mode; the first key signal is generated when the upper electrode 40 is connected to the corresponding second lower electrode 502 through the variable resistance elastic body 60 corresponding to each second lower electrode 502 in the preset second mode. The preset first mode can be a normal mode, the preset second mode is a game mode, and the normal mode and the game mode can be switched through set keys.

In the key module designed above, by arranging the upper electrode 40 on the lower surface of the first elastic film layer 30 and arranging the lower electrode 50 and the variable resistance elastic body 60 on the upper surface of the base layer 10, the upper electrode 40 moves down along with the first elastic film layer 30 when the first elastic film layer 30 is deflected, and then presses the variable resistance elastic body 60, the variable resistance elastic body 60 is changed into a conductive body from an insulator after being pressed, so as to enable the upper electrode 40 and the lower electrode 50 to be conducted, and the resistance value is related to the pressed force or the deformation quantity of the upper electrode, so that the operations of different degrees in a game can be reflected as the stressed change process of the game keyboard keys on the premise of realizing two states of key opening and key closing, the continuous pressure change adjustment of the game keys is realized, and the control of the pressing degree of a user in the game is improved, the game experience is improved.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A key structure, comprising:

a base layer;

two support structures arranged on the base layer at intervals;

the first elastic film layer covers the two support structures and is connected with the two support structures, and the two support structures and the first elastic film layer define an abdicating space on the substrate layer;

the upper electrode is arranged on the lower surface of the first elastic film layer and is positioned in the abdicating space;

a lower electrode disposed on the base layer and located in the abdicating space;

the variable resistance elastic body is arranged on the lower surface of the upper layer electrode or the upper surface of the lower layer electrode and is positioned in the abdicating space;

the variable resistance elastic body is used for connecting the upper electrode with the lower electrode when the first elastic film layer elastically deforms towards the direction of the lower electrode so as to generate a first key signal related to the elastic deformation of the variable resistance elastic body.

2. The key structure of claim 1, wherein the lower electrode comprises a first lower electrode and a second lower electrode arranged at intervals, the first lower electrode and the second lower electrode are both opposite to the upper electrode, and the variable resistance elastomer is arranged on the second lower electrode;

the first lower electrode is used for contacting the upper electrode when the first elastic film layer is elastically deformed inwards so as to generate a second key signal;

the second lower electrode is used for contacting the upper electrode through the variable resistance elastic body when the first elastic film layer is elastically deformed so as to generate a first key signal related to the elastic deformation of the variable resistance elastic body.

3. The key structure of claim 2, wherein the upper layer electrodes comprise a first upper layer electrode and a second upper layer electrode which are arranged at intervals, the first upper layer electrode is opposite to the first lower layer electrode, and the second upper layer electrode is opposite to the second lower layer electrode.

4. The key structure of claim 3, wherein the first upper layer electrode has a thickness greater than the second upper layer electrode or the first lower layer electrode has a thickness greater than the second lower layer electrode.

5. The key structure of claim 2, wherein the second lower electrode is disposed around the first lower electrode.

6. The key structure of claim 1, wherein the upper layer electrodes comprise first upper layer electrodes and second upper layer electrodes arranged at intervals, the lower layer electrodes comprise first lower layer electrodes and second lower layer electrodes arranged at intervals, the first upper layer electrodes are opposite to the first lower layer electrodes, the second upper layer electrodes are opposite to the second lower layer electrodes, and the variable resistance elastomer is arranged on the first upper layer electrodes;

the first lower layer electrode is used for contacting with the first upper layer electrode through the variable resistance elastomer when the first elastic film layer is elastically deformed inwards so as to generate a first key signal related to the elastic deformation of the variable resistance elastomer;

the second lower electrode is used for contacting with the second upper electrode when the first elastic film layer is elastically deformed inwards so as to generate a second key signal.

7. The key structure of claim 6, wherein the second upper layer electrode has a thickness greater than the first upper layer electrode or the second lower layer electrode has a thickness greater than the first lower layer electrode.

8. The key structure according to claim 1, wherein the lower electrodes include a first lower electrode and at least two second lower electrodes, the at least two second lower electrodes are disposed on the substrate layer at intervals, each of the second lower electrodes has a variable-resistance elastic body disposed thereon, the number of the variable-resistance elastic bodies is the same as that of the second lower electrodes, and the first lower electrode covers each of the variable-resistance elastic bodies and is opposite to the upper electrode.

9. The key structure according to claim 1, further comprising a pressing mechanism including an elastic pressing portion, an elastic abutting portion, and two elastic supporting portions;

the upper ends of the two elastic supporting parts are connected to the lower surface of the elastic pressing part at intervals, and the lower ends of the two elastic supporting parts are respectively arranged on the first elastic film layer and are respectively opposite to the two supporting structures; the elastic abutting part is arranged on the lower surface of the elastic pressing part and located between the two elastic supporting parts, and the elastic abutting part is opposite to the abdicating space so as to extrude the first elastic film layer towards the lower-layer electrode.

10. A key module comprising the key structure of any one of claims 1-9 and a key signal generating circuit, wherein the key signal generating circuit is electrically connected to the upper electrode and the lower electrode of the key structure, respectively, for generating a first key signal related to the elastic deformation of the variable resistance elastomer when the upper electrode is connected to the lower electrode through the variable resistance elastomer.