CN115494974A

CN115494974A - Key type touch keyboard and electronic equipment

Info

Publication number: CN115494974A
Application number: CN202110679916.4A
Authority: CN
Inventors: 闫圣达; 朱胜; 罗洋; 黄维勇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-12-20
Also published as: WO2022262484A1

Abstract

The embodiment of the application provides a key type touch keyboard and electronic equipment. The touch-tone keyboard includes: the circuit board assembly comprises a circuit board assembly and a plurality of keys arranged on the circuit board assembly; the circuit board assembly comprises a touch sensing electrode, a connecting hole and a non-metal connecting piece, the touch sensing electrode defines a touch area, at least part of keys in the plurality of keys are positioned in the touch area, and the non-metal connecting piece is connected to the connecting hole; the key comprises a scissor component and a key cap, and the scissor component is respectively connected with the key cap and the nonmetal connecting piece in a rotating way. The key-type touch keyboard provided by the embodiment of the application can solve the problem of poor sensitivity of the touch sensing electrode in the prior art.

Description

Key type touch keyboard and electronic equipment

Technical Field

The embodiment of the application relates to the technical field of terminals, in particular to a key type touch keyboard and electronic equipment.

Background

With the explosive growth of portable notebook computers, smart phones, and tablet computers (PADs), more and more application software requires higher precision touch, such as drawing software. The traditional keyboard usually integrates two independent functional modules of an input module and a touch pad, so that the keyboard is large in size and inconvenient to carry.

Touch control functions of some existing keyboards are integrated in a key input area, and the touch control functions and the input functions can be switched, so that a user can conveniently perform touch control or input actions, the size of the keyboard is reduced, and the miniaturization of the keyboard is realized. This type of keyboard includes metal substrate, touch-control response electrode, scissors foot and key cap. The metal substrate is used for supporting the touch control induction circuit board, the scissor feet and the keycap. The metal substrate is directly provided with a metal buckle, the lower end of the scissor foot is rotatably connected with the metal buckle, and the upper end of the scissor foot is rotatably connected with the keycap. The touch control sensing circuit board is arranged above the metal substrate.

However, the touch sensing electrodes arranged on the metal substrate need to avoid the metal buckles, so that the touch sensing electrodes cannot sense in an avoiding area and can only compensate through an algorithm, and the sensitivity of the touch sensing electrodes is deteriorated, thereby affecting the use experience of the touch function.

Disclosure of Invention

The embodiment of the application provides a key type touch keyboard and electronic equipment, and can solve the problem that a touch sensing electrode in the prior art is poor in sensitivity.

The application provides a key-type touch keyboard in a first aspect, including:

the circuit board assembly comprises a circuit board assembly and a plurality of keys arranged on the circuit board assembly;

the circuit board assembly comprises a touch sensing electrode, a connecting hole and a non-metal connecting piece, the touch sensing electrode defines a touch area, at least part of keys in the plurality of keys are positioned in the touch area, and the non-metal connecting piece is connected to the connecting hole;

the key comprises a scissor component and a key cap, and the scissor component is respectively connected with the key cap and the nonmetal connecting piece in a rotating way.

According to the key-type touch keyboard provided by the embodiment of the application, the connecting holes in the circuit board assembly can be used for connecting and fixing the nonmetal connecting piece, and the keycap is connected to the nonmetal connecting piece through the scissor-leg assembly. On one hand, the size of the connecting hole only needs to meet the requirement that the connecting strength of the non-metal connecting piece and the circuit board assembly meets the preset requirement, but the requirement on the connecting strength of the non-metal connecting piece and the circuit board assembly is not high, so that the size of the connecting hole can be set to be smaller; on the other hand, the nonmetal connecting piece has small or no interference to the touch sensing signal. In summary, in the embodiment of the present application, the metal substrate in the prior art is replaced with the circuit board assembly. The shapes of the connecting holes and the nonmetal connecting pieces on the circuit board assembly have little influence on the design layout of the touch sensing electrodes, so that the touch sensing electrodes can be designed into regular shapes, and the possibility of poor touch sensitivity caused by irregular shape design of the touch sensing electrodes is reduced.

In a possible implementation manner, the non-metal connecting member includes a first clamping portion, the first clamping portion is located on a side of the circuit board assembly facing the key cap, the scissor-leg assembly is rotatably clamped with the first clamping portion, and an overlapping area exists between an orthographic projection of the first clamping portion on the circuit board assembly and an orthographic projection of the touch sensing electrode.

In a possible implementation manner, the non-metallic connector further includes a second clamping portion, the second clamping portion is located on a side of the circuit board assembly facing away from the key cap, and at least a portion of the second clamping portion abuts against a surface of the side of the circuit board assembly facing away from the key cap.

In a possible implementation manner, the circuit board assembly includes a circuit board, the touch sensing electrode and the connecting hole are both disposed on the circuit board, the first clamping portion and the second clamping portion are respectively located on the upper side and the lower side of the circuit board, and the touch sensing electrode avoids the connecting hole.

In one possible implementation, the circuit board assembly further includes a first backlight set located in the touch area and below the key.

In one possible implementation, when the touch function is activated by the key-type touch keyboard, the first backlight lamp set is configured to emit a first color, and when the input function is activated by the key-type touch keyboard, the first backlight lamp set is configured to emit a second color, where the first color is different from the second color.

In a possible implementation manner, the first backlight lamp set comprises a backlight lamp, the backlight lamp is arranged below at least part of keycaps of the keys, and the touch sensing electrodes avoid the backlight lamp.

In a possible implementation manner, the circuit board assembly further includes a second backlight set disposed in the non-touch area, when the touch function is activated by the key-press touch keyboard, the light emitting colors of the first backlight set and the second backlight set in the touch area are different, and when the input function is activated by the key-press touch keyboard, the light emitting colors of the first backlight set and the second backlight set are the same.

In one possible implementation manner, the circuit board assembly comprises a circuit board and a backlight module, the backlight module comprises a light guide plate, the light guide plate is arranged on one side of the circuit board facing the keycap, the touch sensing electrodes are arranged on the surface of the circuit board facing the light guide plate, and the connecting holes are arranged in the light guide plate;

the nonmetal connecting piece further comprises a second clamping portion, and the first clamping portion and the second clamping portion are located on the upper side and the lower side of the light guide plate respectively.

In one possible implementation manner, a touch sensing electrode is disposed on a region of the circuit board corresponding to the connection hole.

In a possible embodiment, the backlight module further includes a light blocking member, the light blocking member separates the light guide plate into a first area and a second area, the touch area corresponds to the first area, when the touch function is activated by the key-type touch keyboard, the light emitting colors of the first area and the second area are different, and when the input function is activated by the key-type touch keyboard, the light emitting colors of the first area and the second area are the same.

In a possible implementation manner, the backlight module further includes a light shielding sheet, the light shielding sheet is located on one side of the light guide plate close to the key cap, the light shielding sheet is provided with a light hole corresponding to the key position, and an orthographic projection area of the key cap facing the light shielding sheet is larger than that of the light hole.

In one possible embodiment, the backlight module further includes a light emitting unit for emitting light toward the light guide plate.

In one possible embodiment, the touch sensing electrode is disposed on the circuit board of the circuit board assembly through a coating, plating, etching or printing process.

In a possible implementation manner, the touch keypad further includes a wireless communication antenna disposed on the circuit board assembly, and the wireless communication antenna is located on one side of the touch sensing electrode.

In a possible embodiment, the key further comprises an elastic member, the elastic member is disposed on a surface of the key cap facing the circuit board assembly, and the elastic member is used for providing a resilience force to the key cap.

In a possible implementation manner, the circuit board assembly includes a key sensing electrode, the key further includes a conductive layer, the conductive layer is disposed on a portion of the elastic member close to the circuit board assembly, a capacitor is formed between the key sensing electrode and the conductive layer, and the capacitance value of the capacitor can be changed by moving the elastic member up or down.

A second aspect of embodiments of the present application provides an electronic device, including: such as the key-type touch keyboard described above.

The electronic equipment provided by the embodiment of the application comprises a key type touch keyboard. In the button touch keyboard, the connecting holes on the circuit board assembly can be used for connecting and fixing the nonmetal connecting pieces, and the keycaps are connected to the nonmetal connecting pieces through the scissor-foot assemblies. On one hand, the size of the connecting hole only needs to meet the requirement that the connecting strength of the non-metal connecting piece and the circuit board assembly meets the preset requirement, but the requirement on the connecting strength of the non-metal connecting piece and the circuit board assembly is not high, so that the size of the connecting hole can be set to be smaller; on the other hand, the nonmetal connecting piece has little or no interference to the touch sensing signal. In summary, in the embodiment of the present application, the metal substrate in the prior art is replaced with the circuit board assembly. The shapes of the connecting holes and the nonmetal connecting pieces on the circuit board assembly have little influence on the design layout of the touch sensing electrodes, so that the touch sensing electrodes can be designed into regular shapes, and the possibility of poor touch sensitivity caused by irregular shape design of the touch sensing electrodes is reduced.

Drawings

Fig. 1 is a schematic view of a scenario provided in an embodiment of the present application;

fig. 2 is a schematic view of another scenario provided in the embodiment of the present application;

fig. 3 is a schematic view of another scenario provided in an embodiment of the present application;

fig. 4 is a schematic view of another scenario provided in an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a partially exploded structure of a touch keypad according to an embodiment of the present disclosure;

fig. 6 is a schematic top view of a key-type touch keyboard according to an embodiment of the present disclosure;

FIG. 7 isbase:Sub>A schematic view in section taken along A-A of FIG. 6;

fig. 8 is a schematic diagram illustrating a partial top view of a circuit board assembly according to an embodiment of the present application;

fig. 9 is a schematic view of a display backlight of a touch area according to an embodiment of the present application;

fig. 10 is a schematic diagram illustrating a connection structure between a circuit board assembly and a wireless communication antenna according to an embodiment of the present application;

fig. 11 is a schematic partial sectional view of a touch keypad according to an embodiment of the present application;

fig. 12 is a schematic diagram illustrating a partial top view of a circuit board assembly according to another embodiment of the present application;

fig. 13 is a schematic top view of a touch keypad according to another embodiment of the present disclosure;

fig. 14 is a schematic view of a connection structure between a circuit board and a touch sensing electrode according to another embodiment of the present application;

fig. 15 is a schematic top view illustrating a backlight module according to an embodiment of the present application;

FIG. 16 is a schematic view in partial section taken along the line B-B in FIG. 13;

fig. 17 is a schematic structural diagram of a light-shielding sheet according to an embodiment of the present application.

Description of the reference numerals:

1. an electronic device;

2. a display screen;

3. a host body;

4. a tablet computer;

10. a push-button touch keyboard;

20. a circuit board assembly; 20a, a touch area; 20b, a reinforcing plate; 21. touch sensing electrodes; 211. an electrode unit; 22. connecting holes; 23. a non-metallic connector; 231. a first clamping part; 232. a second clamping part; 233. a connecting portion; 24. a circuit board; 25. an adhesive layer; 26. a first backlight lamp group; 261. a backlight; 27. a second backlight lamp group; 28. a key sensing electrode; 29. a backlight module; 291. a light guide plate; 291a, a first region; 291b, a second region; 292. a light emitting unit; 293. a light blocking member; 294. bonding the parts; 295. a shading sheet; 295a, light-transmitting holes;

30. pressing a key; 31. a scissor foot assembly; 31a, a rotating shaft part; 311. an outer scissor leg; 312. inner scissor feet; 32. a keycap; 33. an elastic member; 331. a recess; 34. a conductive layer;

40. a wireless communication antenna.

Detailed Description

The embodiment of the present application provides an electronic device 1, where the electronic device 1 may be a mobile terminal, a fixed terminal, or a foldable device, such as a desktop computer, a notebook computer (laptop), a tablet computer (Table), an ultra-mobile personal computer (UMPC), a handheld computer, an intercom, a netbook, a POS machine, a Personal Digital Assistant (PDA), and the like.

Fig. 1 schematically shows a three-dimensional structure of an electronic apparatus 1 of an embodiment. Referring to fig. 1, an electronic device 1 may include a display screen 2 and a host body 3. The display screen 2 and the main body 3 can be connected in a rotating way. For example, the display screen 2 and the main body 3 can be connected through a rotating shaft; or the display screen 2 and the host body 3 can be rotationally connected through a hinge structure; or, in some examples, the display screen 2 and the host body 3 may be independent devices, for example, the display screen 2 and the host body 3 are detachable, when in use, the display screen 2 is placed on the host body 3, and after the use is finished, the display screen 2 and the host body 3 may be separated from each other.

It should be noted that, in order to achieve the display effect of the display screen 2, the display screen 2 and the host body 3 are electrically connected, for example, the display screen 2 and the host body 3 may be electrically connected through a contact, or the display screen 2 and the host body 3 may be electrically connected through a Flexible Printed Circuit (FPC), or the display screen 2 and the host body 3 may be electrically connected through a wire, or the display screen 2 and the host body 3 may be wirelessly connected through a wireless signal.

Referring to fig. 1, to implement input of the electronic device 1, the electronic device 1 may further include a touch-key keypad 10. The key type touch keyboard 10 can be arranged on the main body 3. The key type touch keyboard 10 is electrically connected with the control unit in the main body 3. A touch-key keypad 10 serves as an input device for the electronic device 1. The key-type touch keyboard 10 can use keys to input characters or operation instructions, and can also control cursor movement or perform multi-gesture operation in a touch manner.

Fig. 2 schematically shows the structure of an electronic apparatus 1 of another embodiment. The electronic device 1 of the present embodiment is a desktop computer. Referring to fig. 2, the electronic device 1 may include a display screen 2 and a host body 3. The display screen 2 and the host body 3 are independently arranged. The display screen 2 is electrically connected with the host body 3 through a data line, so that the display effect of the display screen 2 is realized. The key type touch keyboard 10 and the main body 3 are independently arranged. The key touch keyboard 10 is electrically connected with the host body 3 through a data line, so that the key touch keyboard 10 can be used as an input device of the electronic device 1. In some other embodiments, the key-type touch keyboard 10 is wirelessly connected to the host body 3 through a wireless signal (e.g., a bluetooth signal).

Fig. 3 schematically shows a three-dimensional structure of an electronic apparatus 1 of another embodiment. Referring to fig. 3, the electronic device 1 may include: a tablet computer 4 and a touch-tone keypad 10. The tablet computer 4 and the key touch keyboard 10 can be independent from each other, for example, the tablet computer 4 and the key touch keyboard 10 can be detachable from each other, when the keyboard is used, the tablet computer 4 is placed on the key touch keyboard 10, and after the keyboard is used, the tablet computer 4 and the key touch keyboard 10 can be separated from each other.

Illustratively, the tablet computer 4 and the touch-key keyboard 10 may be electrically connected through contacts. Or, the tablet computer 4 is electrically connected with the key touch keyboard 10 through a wire. Alternatively, the tablet computer 4 and the touch keypad 10 may be wirelessly connected through a wireless signal (e.g., a bluetooth signal). In the embodiment of the present application, the key touch keyboard 10 may be, for example, a wireless keyboard shown in fig. 3.

Fig. 4 schematically shows a three-dimensional structure of an electronic apparatus 1 of another embodiment. Referring to fig. 4, the tablet computer 4 and the key touch keyboard 10 may be placed at a predetermined distance from each other for use, and the tablet computer 4 and the key touch keyboard 10 may be wirelessly connected by a wireless signal (e.g., a bluetooth signal), so that a user may arbitrarily adjust the placement position of the key touch keyboard 10 according to personal use habits. In the embodiment of the present application, the key touch keyboard 10 may be, for example, a wireless keyboard shown in fig. 4.

In one embodiment, the tablet computer 4 and the touch-key keypad 10 can be interconnected through a communication network to realize wireless signal interaction. The communication network may be, but is not limited to: a WI-FI hotspot network, a WI-FI peer-to-peer (P2P) network, a bluetooth network, a zigbee network, or a Near Field Communication (NFC) network. The touch-tone keypad 10 can provide input to the electronic device 1, and the electronic device 1 performs an operation in response to the input based on the input of the touch-tone keypad 10.

In the keyboard integrated with the touch function, the keyboard mainly comprises: base plate, scissors foot and key cap, wherein, the integrated buckle that is used for rotating continuous with the scissors foot that forms on the base plate. The substrate is provided with a touch sensing electrode. The touch sensing electrode is located below the keycap. Because the base plate is sheet metal to the buckle that is used for connecting the scissors foot is by sheet metal integrated into one piece's metal buckle, and the metal buckle can produce signal interference to the touch-control response electrode on the touch-control response circuit board, therefore touch-control response electrode need dodge out the metal buckle, and on the thickness direction of keyboard promptly, there is not overlap area in orthographic projection of metal buckle and the orthographic projection of touch-control response electrode, thereby guarantees that touch-control response electrode does not receive the interference of metal buckle.

However, since the touch sensing electrodes need to avoid the buckles and cannot be distributed below the buckles, the overall shape of the touch sensing electrodes is irregular, and in the same touch area, the number of touch sensing electrodes is small, so that the position of the touch area where no touch sensing electrode is arranged cannot execute a touch instruction or needs to be compensated by an algorithm, and finally touch feedback of the keyboard is insensitive and inaccurate in positioning.

Based on the above-mentioned problems, the embodiment of the present application provides a touch keypad 10, in which a metal substrate in the keypad is replaced with a circuit board assembly, and a connection hole is formed in the circuit board assembly, so as to fix a part of a non-metal connection member in the connection hole. And a part of the nonmetal connecting piece forms a buckle which is clamped with the scissors assembly above the circuit board assembly. The keycap is connected to the non-metal connecting piece through the scissor assembly. Because the non-metal connecting piece is free from interference to the touch sensing signal, when the touch sensing electrode is arranged on the circuit board assembly, the non-metal connecting piece is only required to avoid the connecting hole, and the clamping position of the non-metal connecting piece and the scissor component is not required to avoid, so that the touch sensing electrode can be arranged below the clamping position of the non-metal connecting piece and the scissor component, and the touch sensing electrode and the non-metal connecting piece can be overlapped in the thickness direction of the keyboard, therefore, in the same touch area, the touch sensing electrodes are increased, and the touch sensing electrodes can be designed into a more regular shape, and the touch is more sensitive.

The following describes in detail the implementation of the key touch keyboard 10 provided in the embodiment of the present application.

FIG. 5 schematically illustrates an exploded view of the touch-key keypad 10 according to one embodiment. Referring to fig. 5, the touch keypad 10 of the present embodiment includes a circuit board assembly 20 and a plurality of keys 30 disposed on the circuit board assembly 20. The circuit board assembly 20 and the key 30 are stacked. Circuit board assembly 20 may provide support for each of keys 30. The variety of keys 30 may be referenced to existing keyboards, for example, the plurality of keys 30 may include numeric keys, function keys (e.g., delete key, insert key, etc.), and alphabetic keys, among others. The buttons 30 may be divided into single buttons and multiple buttons according to their own sizes. The single key refers to the key 30 that is right above the keyboard, for example, the key 30 corresponding to each letter and each number. The multiple keys are keys 30 other than the single key, for example, keys 30 such as a space key, an Enter key, and a Shift key.

The circuit board assembly 20 of the embodiment of the present application includes a touch sensing electrode 21, a connection hole 22, and a non-metal connector 23. The touch sensing electrode 21 defines a touch area 20a, and at least some of the plurality of keys 30 are located in the touch area 20 a. The non-metallic connector 23 is connected to the connection hole 22. The key 30 comprises a scissor-foot assembly 31 and a key cap 32. The scissor-foot assembly 31 is pivotally connected to the key cap 32 and the non-metallic link 23, respectively.

The touch sensing electrode 21 can control the position of the cursor or execute the related operation command by sensing the motion of the user's finger. For example, if a finger slides on the touch area 20a, the cursor can be moved. An object can be selected by a finger tapping on the touch area 20 a. A finger taps two times at the touch area 20a and can double-tap an object. Multiple gesture functions may be implemented, for example, on the touch area 20a, a three-finger swipe down may display a desktop, or a three-finger left swipe may implement a page return.

In some embodiments, the touch sensing electrode 21 may be a capacitive sensing electrode. When a finger of a user approaches the touch sensing electrode 21, the capacitance value of the position corresponding to the touch sensing electrode 21 is changed, so that when the finger performs a related action on the touch area 20a, the capacitance value of the position corresponding to the touch sensing electrode 21 is changed, and the touch sensing electrode 21 can identify the action of the finger based on the change of the capacitance value.

At least some of the keys 30 of the embodiment of the application are located in the touch area 20a, that is, the number of the keys 30 and the touch sensing electrodes 21 are stacked. When the key-press type touch keyboard 10 is in the input function mode, the keys 30 located in the touch area 20a can be normally pressed to execute the input function.

In some embodiments, FIG. 6 schematically illustrates a top view of one embodiment of touch-tone keyboard 10. Referring to FIG. 6, touch-tone keyboard 10 also includes left and right keystrokes. The left and right keystrokes are located below the touch area 20 a. The left and right keystrokes function like the left and right keystrokes of a mouse. The left key stroke and the right key stroke are matched with a touch function to realize more instruction operations. Left and right keystrokes may be individually provided on touch-tone keyboard 10. The left key stroke and the right key stroke are respectively positioned at the left side and the right side of the space key. Alternatively, two keys, e.g., the letter F key and the letter J key, are selected on touch-sensitive keyboard 10 and are used as left-click and right-click keys, respectively, in the touch-sensitive functional mode. The letter F key and the letter J key may input the letter F and the letter J, respectively, when inputting the function mode.

Or the long-strip-shaped space key is divided into a left key and a right key. And when in the touch function mode, the left key and the right key are respectively used as a left key stroke and a right key stroke. When the function mode is input, the left key and the right key can input a space.

Fig. 7 schematically showsbase:Sub>A partial sectional structure along thebase:Sub>A-base:Sub>A direction in fig. 6. Referring to fig. 6 and 7, the connection holes 22 on the circuit board assembly 20 are used to provide connection sites for the non-metallic connectors 23. A portion of the non-metallic connector 23 is located within the attachment hole 22. After the non-metal connector 23 and the circuit board assembly 20 are connected, when the non-metal connector 23 is acted by external force, the non-metal connector 23 is not easy to be separated from the connecting hole 22. The circuit board assembly 20 and the non-metallic connectors 23 may be independent of each other. In some embodiments, the non-metallic connector 23 may be connected to the circuit board assembly 20 by being snapped into the connection hole 22. In other embodiments, the non-metallic connector 23 may be injection molded on the circuit board assembly 20 through an injection molding process, instead of a portion of the metallic connector 23 being located within the connection hole 22, so that the non-metallic connector 23 and the circuit board assembly 20 are connected to each other. Alternatively, the non-metallic connector 23 may be attached to the circuit board assembly 20 by riveting or snapping.

The key 30 of the present embodiment includes a scissor-foot assembly 31 and a key cap 32. The scissor-foot assembly 31 is pivotally connected to the key cap 32 and the non-metallic link 23, respectively. The scissor-foot assembly 31 is disposed below the keycap 32. The scissor assembly 31 is configured to provide good support for the key cap 32 to enable equalization of the key cap 32 pressing stress so that a user can press the key cap 32 at a fixed pressure anywhere on the key cap 32, reducing the possibility of uneven pressure or key jamming of the key cap 32.

In some embodiments, one or more than two scissor assemblies 31 may be disposed under one keycap 32.

In some embodiments, scissor assembly 31 includes outer scissor legs 311 and inner scissor legs 312. The outer scissor leg 311 and the inner scissor leg 312 are crossed and rotatably connected with each other. The respective lower ends of the outer scissor legs 311 and the inner scissor legs 312 are rotatably connected to the non-metal connector 23. The upper ends of the outer scissor-like legs 311 and the inner scissor-like legs 312 are rotatably connected with the key cap 32. In some examples, outer scissor legs 311 and inner scissor legs 312 may both be a box structure.

In the embodiment of the present application, the material of the non-metal connector 23 may be an insulating material, such as plastic or rubber. The material of the outer scissor legs 311 and the inner scissor legs 312 may be plastic. The mating relationship of the outer scissor legs 311 and the inner scissor legs 312 may be referred to as the scissor leg configuration in the prior art key 30. The material of the key cap 32 may be plastic.

The key-type touch keyboard 10 of the embodiment of the present application provides support for the keys 30 through the circuit board assembly 20. The touch sensing electrodes 21 and the keys 30 on the circuit board assembly 20 are stacked. The touch sensing electrodes 21 on the circuit board assembly 20 define a touch area 20a, so that corresponding commands can be input by a touch method when the key-type touch keyboard 10 is in a touch function mode. When the touch-tone keypad 10 is in the input function mode, the keys 30 can be pressed to perform the input function. Therefore, the key touch keyboard 10 of the embodiment of the present application has a touch function and an input function, and by the way of stacking the touch sensing electrodes 21 and the keys 30, the key touch keyboard 10 does not need to separately partition an area for disposing the touch sensing electrodes 21, which is beneficial to reducing the overall size of the key touch keyboard 10 and realizing miniaturization of the key touch keyboard 10. In the embodiment of the present application, the connection hole 22 on the circuit board assembly 20 can be used to connect and fix the non-metal link 23, and the key cap 32 is connected to the non-metal link 23 through the scissor-foot assembly 31. On one hand, the size of the connecting hole 22 only needs to meet the requirement that the connection strength of the nonmetal connecting piece 23 and the circuit board assembly 20 meets the preset requirement, but the requirement on the connection strength of the nonmetal connecting piece 23 and the circuit board assembly 20 is not high, so the size of the connecting hole 22 can be set to be smaller; on the other hand, the non-metal connecting part 23 has little or no interference to the touch sensing signal. In summary, in the embodiment of the present application, the circuit board assembly 20 replaces the metal substrate in the prior art. The shapes of the connection holes 22 and the non-metal connecting pieces 23 on the circuit board assembly 20 have little influence on the design layout of the touch sensing electrodes 21, so that the touch sensing electrodes 21 can be designed into a more regular shape, and the possibility of poor touch sensitivity of the touch sensing electrodes 21 due to irregular shape design is reduced.

It should be noted that, the touch sensing electrode 21 is designed into a regular shape, which means that the pattern formed by the touch sensing electrode 21 is regular and ordered.

In some embodiments, four non-metallic links 23 may be disposed below the key cap 32 for each key 30. The four non-metallic connectors 23 are disposed corresponding to the four corners of the key cap 32, respectively. The scissor-foot assemblies 31 are respectively rotatably connected with the four non-metallic connectors 23. In the embodiment where the scissor assembly 31 comprises the outer scissor legs 311 and the inner scissor legs 312, the lower ends of the outer scissor legs 311 are respectively pivotally connected to two adjacent non-metallic connectors 23, and the lower ends of the inner scissor legs 312 are respectively pivotally connected to the other two adjacent non-metallic connectors 23.

In some embodiments, the non-metallic connector 23 includes a first snap-in portion 231. The first clamping portion 231 is located on a side of the circuit board assembly 20 facing the key cap 32. The scissor-leg assembly 31 is rotatably engaged with the first engaging portion 231. At least a portion of the first clamping portion 231 may be disposed above the touch sensing electrode 21. The orthographic projection of the first clamping part 231 on the circuit board assembly 20 and the orthographic projection of the touch sensing electrode 21 have an overlapping area. Since the nonmetal connecting member 23 has little or no interference with the touch sensing signal, the touch sensing electrode 21 does not need to avoid the portion of the first clamping portion 231 disposed above the touch sensing electrode 21, thereby effectively reducing the avoidance area of the touch sensing electrode 21.

The non-metallic connector 23 includes a connection portion 233. At least a portion of the connection portion 233 is located within the connection hole 22. The first catching portion 231 is located outside the connection hole 22 and connected to the connection portion 233.

In some examples, a gap is formed between the first clamping portion 231 and the circuit board assembly 20, and the scissor-foot assembly 31 includes a rotating shaft portion 31a clamped in the gap. The surface of the first clamping portion 231 facing the circuit board assembly 20 may be a plane, and the rotation shaft portion 31a may abut against the surface of the first clamping portion 231 facing the circuit board assembly 20. The contact area between the surface of the rotating shaft portion 31a and the surface of the first clamping portion 231 facing the circuit board assembly 20 is small, so that the rotating resistance of the rotating shaft portion 31a can be effectively reduced, and the abrasion rate of the rotating shaft portion 31a is favorably reduced.

In some examples, a slot may be disposed on the first clamping portion 231, and the scissor-leg assembly 31 includes a rotating shaft portion 31a clamped in the slot. Illustratively, the first catching portion 231 extends in a radial direction of the connection hole 22. The opening of the card slot on the first card connecting portion 231 is located on the surface of the first card connecting portion 231 facing the circuit board assembly 20.

In some embodiments, the non-metallic connector 23 further includes a second snap-in portion 232. The second clamping portion 232 is located on a side of the circuit board assembly 20 facing away from the key cap 32. The second clamping portion 232 protrudes from a side surface of the circuit board assembly 20 facing away from the key cap 32. At least a portion of the second snap-fit portion 232 abuts a side surface of the circuit board assembly 20 facing away from the key cap 32. The second clamping portion 232 can improve the connection stability and reliability of the non-metal connector 23 and the circuit board assembly 20. Because second joint portion 232 and circuit board component 20 are the lateral surface butt of key cap 32 dorsad for second joint portion 232 plays the spacing effect of restraint, consequently receives the ascending pulling force of scissors foot subassembly 31 when first joint portion 231 acts on, and nonmetal connecting piece 23 is difficult for deviating from in the connecting hole 22 and takes place the separation with circuit board component 20.

In some examples, the second catching portion 232 extends in a radial direction of the connection hole 22. The radial dimensions of the first and second catching

portions

231 and 232 are greater than the maximum radial dimension of the connection hole 22, and the first and second catching

portions

231 and 232 may shield the connection hole 22, respectively. The first and second seizing

portions

231 and 232 are connected to upper and lower ends of the connecting portion 233, respectively.

In some examples, the second catching portion 232 extends in a radial direction of the connection hole 22. The extending directions of the first clamping portion 231 and the second clamping portion 232 may be the same, that is, both the first clamping portion 231 and the second clamping portion 232 extend along the same direction. The first and second seizing

portions

Fig. 8 schematically illustrates a top view of an embodiment of a circuit board assembly 20. Referring to fig. 7 and 8, the circuit board assembly 20 includes a circuit board 24. The circuit board 24 provides support for the keys 30. The touch sensing electrodes 21 and the connecting holes 22 are disposed on the circuit board 24. The first clamping portion 231 and the second clamping portion 232 are respectively located at the upper and lower sides of the circuit board 24. The connection hole 22 penetrates the circuit board 24. The touch sensing electrode 21 is disposed to be away from the connection hole 22. The non-metallic connector 23 is directly connected to the circuit board 24.

In some examples, circuit board 24 is lightweight itself, thereby facilitating a reduction in the overall weight of touch-tone keyboard 10, resulting in a lighter weight touch-tone keyboard 10. In the embodiment of the present application, the circuit board 24 is not easily bent or deformed. The Circuit Board 24 may be a Printed Circuit Board (PCB).

In some examples, circuit board assembly 20 also includes a stiffener. The reinforcing sheet is disposed on a side of the circuit board 24 facing away from the keycap. The stiffener is attached to the circuit board 24, for example, by bonding the stiffener to the circuit board 24. The reinforcing sheet can effectively improve the deformation resistance of the circuit board assembly 20 and reduce the possibility of self-fracture caused by bending of the circuit board 24. Illustratively, the thickness of the reinforcing sheet is 0.3 mm to 0.4 mm. The reinforcing sheet may be a steel sheet.

In some examples, when the material of the non-metal connector 23 is plastic or rubber, the non-metal connector 23 may be injection molded on the circuit board 24 by an injection molding process, so that the non-metal connector 23 and the circuit board 24 are connected to each other to form a unitary structure.

The touch sensing electrode 21 is directly formed on the circuit board 24, so that the touch sensing electrode 21 and the circuit board 24 form an integral structure, and thus, compared with a mode that the touch sensing electrode 21 is independently arranged as a separate structural member in the prior art, the position of the touch sensing electrode 21 itself in the embodiment of the present application does not move, and the possibility that the position of the touch sensing electrode 21 is shifted to cause the change of the position of the touch area 20a or the wrinkle of the touch sensing electrode 21 to cause touch failure is reduced. Illustratively, the touch sensing electrode 21 may be disposed on the circuit board 24 of the circuit board assembly 20 through a coating, plating, etching or printing process.

In some examples, the touch sensing electrode 21 may include a plurality of electrode units 211 in a prismatic or square pattern. The electrode units 211 in the touch sensing electrode 21 are arranged in order. The adjacent two electrode units 211 are electrically connected to each other.

The circuit board assembly 20 further includes an adhesive layer 25. The adhesive layer 25 is disposed on a surface of the circuit board 24 on a side facing away from the keycap 32. Circuit board 24 may be adhered to a corresponding mounting platform by adhesive layer 25 to secure touch-tone keypad 10 to the mounting platform. Illustratively, the adhesive layer 25 may be a double-sided tape or a liquid adhesive.

Because second joint portion 232 and circuit board 24 are the lateral surface butt of key cap 32 dorsad, consequently, the position that circuit board 24 and second joint portion 232 correspond need not set up the portion of sinking to the whole thickness of circuit board 24 sets up to even, unanimous, makes circuit board 24 self whole mechanical strength strong, anti deformability is strong, and then can reduce second joint portion 232 and exert pressure stress to circuit board 24 and lead to circuit board 24 easily to appear the possibility of crack.

Fig. 9 schematically shows a top view of the touch-key keypad 10 according to an embodiment. Referring to fig. 7 and 9, the circuit board assembly 20 further includes a first backlight group 26. The first backlight set 26 is located in the touch area 20a and under one or more of the buttons 30. The first backlight set 26 may be configured to provide backlight to the keys 30 located in the touch area 20a, so that in a dark environment, a user may clearly observe the corresponding keys 30, thereby reducing the possibility of incorrect operation of the keys 30 and improving the input efficiency. The first backlight lamp set 26 may also be used to display the touch area 20a in a backlight manner, so that the user can clearly observe the touch area 20a, which is convenient for the user to accurately and quickly perform a gesture touch operation in the touch area 20a, and reduces the possibility of input errors caused by performing the gesture touch operation in a non-touch area due to the inability to clearly identify the touch area 20 a.

The first backlight group 26 may display different colors. When the touch function is activated by the key-type touch keyboard 10, the first backlight lamp set 26 is used to emit a first color, and when the input function is activated by the key-type touch keyboard 10, the first backlight lamp set 26 is used to emit a second color, wherein the first color is different from the second color. For example, when the touch function is activated by the key-press touch keyboard 10, the first backlight lamp set 26 is used for emitting red light, and when the input function is activated by the key-press touch keyboard 10, the first backlight lamp set 26 is used for emitting white light. The first backlight lamp set 26 can remind the user of the switching change of the functions of the key touch keyboard 10 and the position of the touch area 20a by displaying different color changes, thereby improving the accuracy and convenience of touch input of the user.

For example, a physical switch (not shown) may be disposed on the touch-key keypad 10, so that a user can switch between a touch function and an input function through the physical switch. The physical switch may control the color displayed by the first backlight group 26. Alternatively, the touch sensing electrode 21 may automatically recognize the gesture of the user to determine that the user is performing a touch operation. Or, for example, the user inputs a gesture of making a pair number in the touch area 20a, the touch sensing electrode 21 automatically recognizes the gesture, and the touch function and the input function are automatically switched. At this time, the key touch keyboard 10 can automatically control the first backlight lamp set 26 to illuminate.

In some examples, the first backlight group 26 includes a backlight 261. A backlight 261 is disposed beneath the key caps 32 of at least some of the keys 30. For example, a backlight 261 may be disposed under the key cap 32 of the key 30 located at the edge of the touch area 20 a. Alternatively, the backlight 261 is provided under the key caps 32 of the keys 30 in all the touch areas 20 a. The touch sensing electrode 21 is shielded from the backlight 261, so that the possibility of signal interference caused by the backlight 261 to the touch sensing electrode 21 is reduced. A backlight 261 may be disposed in a gap between adjacent two electrode units 211. The backlight 261 is disposed on the circuit board 24. The backlight 261 may be an LED lamp.

In some examples, the backlight lamps 261 under different keys 30 can also be controlled individually, so that different brightness or different light emitting colors of the backlight lamps 261 under different keys 30 can be realized, and personalized requirements can be met.

Illustratively, the first backlight group 26 may include a backlight 261 that is bi-colored, for example, in the touch function mode, the backlight 261 may emit red light, and in the input function mode, the backlight 261 may emit white light. Alternatively, two sets of backlight lamps 261 may be disposed beneath the key caps 32. The color of light emitted from the first group of backlights 261 is different from the color of light emitted from the second group of backlights 261. For example, in the touch function mode, the first group of backlights 261 is operated and emits red light, while the second group of backlights 261 is in an off state, and in the input function mode, the second group of backlights 261 is operated and emits white light, while the first group of backlights 261 is in an off state.

In some embodiments, referring to fig. 8, the circuit board assembly 20 further includes a second backlight group 27. The second backlight lamp set 27 is disposed in the non-touch area. The non-touch area refers to an area of the touch-key pad 10 except for the touch-control area 20a defined by the touch-control sensing electrode 21. The second backlight lamp set 27 may be configured to provide backlight for the keys 30 located in the non-touch area, so that in a dark environment, a user may also clearly observe the keys 30 corresponding to the non-touch area, thereby reducing the possibility of misoperation of the keys 30 and facilitating improvement of input efficiency.

When the touch function of the key touch keyboard 10 is turned on, the light emitting colors of the first backlight set 26 in the touch area 20a and the second backlight set 27 in the non-touch area are different, and when the input function of the key touch keyboard 10 is turned on, the light emitting colors of the first backlight set 26 and the second backlight set 27 are the same. For example, when the touch function of the key-type touch keyboard 10 is turned on, the first backlight lamp set 26 emits red light, and the second backlight lamp set 27 emits white light. When the key-press type touch control keyboard 10 starts an input function, the first backlight lamp set 26 and the second backlight lamp set 27 both emit white light. The first backlight set 26 and the second backlight set 27 display backlights with different colors to distinguish the touch area 20a from the non-touch area, so that the user can clearly observe the touch area 20a and the non-touch area, thereby facilitating the user to accurately and quickly perform the gesture touch operation in the touch area 20a, and reducing the possibility of input errors caused by the gesture touch operation performed in the non-touch area due to the failure to accurately identify the touch area 20 a.

The second backlight group 27 includes a backlight 261. In the non-touch area, a backlight 261 is arranged under the key caps 32 of at least some of the keys 30. For example, a backlight 261 may be provided under the key cap 32 of the key 30 located on the non-touch area near the touch area 20 a. Alternatively, backlight 261 is provided under the key caps 32 of the keys 30 in all the non-touch areas. The backlight 261 is provided on the circuit board 24.

Fig. 10 schematically shows a partial structure of the touch-key keyboard 10 according to an embodiment. Referring to FIG. 10, touch-tone keypad 10 also includes a wireless communication antenna 40. The wireless communication antenna 40 is disposed on the circuit board assembly 20. The wireless communication antenna 40 is located at one side of the touch sensing electrode 21, i.e. the wireless communication antenna 40 is located at the non-touch area of the key touch keyboard 10. Compared with the mode that the touch sensing electrode 21 and the wireless communication antenna 40 are stacked, the mode that the touch sensing electrode 21 and the wireless communication antenna 40 are tiled reduces the overall thickness of the key touch keyboard 10, and is also beneficial to reducing the possibility of signal interference between the touch sensing electrode 21 and the wireless communication antenna 40.

Illustratively, the wireless communication antenna 40 may include a Bluetooth (BT) antenna and/or a Near Field Communication (NFC) coil.

Fig. 11 schematically shows a partial cross-sectional structure of a touch-key keyboard 10 according to an embodiment. Referring to fig. 11, the key 30 further includes an elastic member 33. The elastic member 33 is disposed on a surface of the key cap 32 facing the circuit board assembly 20. The resilient member 33 is located between the key cap 32 and the circuit board assembly 20. The elastic member 33 serves to provide a resilient force to the key cap 32. When the user presses the key cap 32 to move down, the key cap 32 compresses the elastic member 33. When the user releases the key cap 32, the elastic member 33 releases the elastic potential energy to resiliently drive the key cap 32 to move up. Illustratively, the end of the resilient member 33 proximate the circuit board assembly 20 is attached to a surface of the circuit board assembly 20 on a side facing the key cap 32. Illustratively, the elastic member 33 is a flexible structure. The material of the elastic member 33 may be selected from silicone or rubber.

Circuit board assembly 20 includes key sensing electrodes 28. Key 30 also includes a conductive layer 34. The conductive layer 34 is disposed on a portion of the elastic member 33 near the circuit board assembly 20. The key sensing electrode 28 and the conductive layer 34 are spaced apart by a predetermined distance, thereby forming a capacitance therebetween. The elastic member 33 moves up or down to change the capacitance of the capacitor. The key-type touch keyboard 10 receives the capacitance value change signal, thereby identifying the position of the hit key 30 to execute the corresponding input command. Illustratively, the material of the conductive layer 34 may be a carbon powder layer or a layer structure containing carbon powder.

In some examples, the surface of the elastic member 33 facing the circuit board assembly 20 has a recess 331. The conductive layer 34 is disposed on the bottom wall of the recess 331. Because the conductive layer 34 is located in the concave portion 331, the elastic member 33 can protect the conductive layer 34, which is beneficial to improving the waterproof performance and the dustproof performance of the touch keypad 10, so that water or conductive dust is not easy to contact the conductive layer 34, and the possibility that the water or conductive dust interferes with the capacitance between the conductive layer 34 and the key sensing electrode 28 is reduced.

Fig. 12 schematically illustrates a partial top view structure of a circuit board assembly provided by another embodiment. Referring to fig. 12, the touch sensing electrode 21 can be divided into a left-hand touch area and a right-hand touch area, for example, the dotted line in fig. 12 is used as a boundary line, the left side is the left-hand touch area, and the right side is the right-hand touch area. The left-hand touch area and the right-hand touch area can respectively and independently perform touch functions, for example, a user accustomed to using the left hand to perform touch can selectively turn on the left-hand touch area, the right-hand touch area can be set in a turn-off state, a user accustomed to using the right hand to perform touch can selectively turn on the right-hand touch area, and the left-hand touch area can be set in a turn-off state. The touch sensing electrode 21 can meet the requirements of users with different use habits, and the product satisfaction is improved.

FIG. 13 schematically illustrates a top view of one embodiment of the touch-tone keyboard 10. Fig. 14 schematically shows a top view structure of the circuit board 24 and the touch sensing electrode 21 according to an embodiment. Fig. 15 schematically shows a top view structure of the backlight module 29 according to an embodiment. Referring to fig. 13 to 15, the circuit board assembly 20 includes a circuit board 24 and a backlight module 29. The backlight assembly 29 includes a light guide plate 291. The light guide plate 291 is disposed on a side of the circuit board 24 facing the key cap 32. The light guide plate 291 has functions of guiding and homogenizing light. The backlight module 29 may display backlight through the light guide plate 291 to illuminate the keys 30 of the corresponding area. The backlight module 29 can be used for providing backlight for the keys 30, so that in an environment with dark light, a user can clearly observe the corresponding keys 30, the possibility of misoperation of the keys 30 is reduced, and the improvement of input accuracy and input efficiency is facilitated. The touch sensing electrode 21 is disposed on a surface of the circuit board 24 facing the light guide plate 291. The connection hole 22 is provided in the light guide plate 291. The non-metal connector 23 is connected to the light guide plate 291.

In some examples, the material of the light guide plate 291 is an insulating material, and may be, for example, polymethyl methacrylate (PMMA).

In some examples, the light guide plate 291 is adhered to the touch sensing electrode 21 and/or the circuit board 24 by an adhesive 294, for example, the adhesive 294 may be a double-sided tape.

In some embodiments, the touch sensing electrode 21 is disposed on the circuit board 24 in a region corresponding to the connection hole 22. Since the connection hole 22 is disposed on the light guide plate 291, the touch sensing electrode 21 on the circuit board 24 does not need to leave the connection hole 22, so that the overall shape of the touch sensing electrode 21 on the circuit board 24 can be designed to be more regular, which is beneficial to further improving the touch sensitivity of the touch sensing electrode 21.

In some embodiments, the backlight assembly 29 further comprises a light emitting unit 292. The light emitting unit 292 serves to introduce light to the light guide plate 291. The light emitting unit 292 may be disposed at a position near an edge of the light guide plate 291. The light emitting unit 292 is turned on and then, light is incident into the light guide plate 291. The light is uniformly distributed by the light guide plate 291 to illuminate the key 30 area. Because the light-emitting unit 292 may be disposed in the non-touch area, the touch sensing electrode 21 does not need to avoid the light-emitting unit 292, and thus the touch sensing electrode 21 may be designed in a regular shape, which is beneficial to further improving the sensitivity of the touch sensing electrode 21, and the touch sensing electrode 21 is less interfered by the light-emitting unit 292, which is also beneficial to improving the sensitivity of the touch sensing electrode 21. Illustratively, the light emitting unit 292 may be an LED lamp.

In some embodiments, the backlight module 29 further includes a light barrier 293. The light blocking member 293 partitions the light guide plate 291 into a first region 291a and a second region 291b. The light blocking member 293 is an opaque member. The light blocking member 293 serves to prevent the first and second regions 291a and 291b from mixing light. The light blocking member 293 extends along the outer contour of the touch sensing electrode 21. The touch sensing electrode 21 may define a touch area 20a corresponding to the first area 291a of the light guide plate 291. The non-touch region of the key touch keypad 10 may correspond to the second region 291b of the light guide plate 291. When the touch function is activated by the key touch keyboard 10, the first area 291a and the second area 291b emit different colors of light. When the key touch keyboard 10 starts an input function, the first area 291a and the second area 291b emit the same color light.

The first and second regions 291a and 291b of the light guide plate 291 distinguish the touch region 20a from the non-touch region by displaying backlights of different colors, so that the user can clearly observe the touch region 20a and the non-touch region, thereby facilitating the user to accurately and quickly perform a gesture touch operation in the touch region 20a, and reducing the possibility of an input error caused by performing the gesture touch operation in the non-touch region due to the inability to recognize the touch region 20 a.

In some examples, the first and second regions 291a and 291b of the light guide plate 291 are adhesively fixed with the light blocking member 293, respectively. The light guide plate 291 and the light blocking member 293 may be adhered to the touch sensing electrode 21 and/or the circuit board 24.

In some examples, the light emitting units 292 in the backlight assembly 29 for incident light to the first region 291a of the light guide plate 291 and the light emitting units 292 in the backlight assembly 29 for incident light to the second region 291b of the light guide plate 291 are separately controlled. For example, when the touch key pad 10 is activated, the light emitting unit 292 of the backlight module 29 for emitting light to the first region 291a of the light guide plate 291 is controlled to emit red light, and the light emitting unit 292 of the backlight module 29 for emitting light to the second region 291b of the light guide plate 291 is controlled to emit white light. When the key touch keyboard 10 starts the input function, the light emitting unit 292 of the backlight module 29 for emitting light toward the first region 291a of the light guide plate 291 is controlled to emit white light, and the light emitting unit 292 of the backlight module 29 for emitting light toward the second region 291b of the light guide plate 291 is controlled to emit white light.

Fig. 16 schematically shows a sectional structure in the direction B-B in fig. 13. Referring to fig. 16, the non-metal connector 23 includes a first catching portion 231 and a second catching portion 232. The first and second engaging

portions

231 and 232 are respectively disposed at upper and lower sides of the light guide plate 291. The second clipping portion 232 is located at a side of the light guide plate 291 facing away from the key cap 32. At least a part of the second engaging portion 232 abuts against a side surface of the light guide plate 291 facing away from the key cap 32. The second clamping portion 232 can improve the connection stability and reliability of the non-metal connector 23 and the light guide plate 291. Because second joint portion 232 and the light guide plate 291 are in butt joint with a side surface of the key cap 32, so that the second joint portion 232 plays a role in restricting and limiting, when the first joint portion 231 is acted by the upward pulling force of the scissor leg assembly 31, the nonmetal connecting piece 23 is not easy to be separated from the connecting hole 22 and separated from the light guide plate 291.

In some examples, a gap is formed between the first clamping portion 231 and the light guide plate 291, and the scissor-leg assembly 31 includes a rotation shaft portion 31a clamped in the gap. Alternatively, a slot may be disposed on the first clamping portion 231, and the scissors foot assembly 31 includes a rotating shaft portion 31a clamped in the slot. Illustratively, the first catching portion 231 extends in a radial direction of the connection hole 22. The opening of the card slot on the first card portion 231 is located on the surface of the first card portion 231 facing the light guide plate 291.

Fig. 17 schematically shows a structure of a light-shielding sheet of an embodiment. Referring to fig. 16 and 17, the backlight module 29 further includes a light shielding sheet 295. The material of the gobo 295 may be plastic. The light shielding sheet 295 is located on one side of the light guide plate 291 near the key cap 32. The light shielding plate 295 is provided with a light transmitting hole 295a corresponding to the position of the key 30. The area of the orthographic projection of the key cap 32 facing the light-shielding sheet 295 is larger than the area of the orthographic projection of the light-transmitting hole 295a. The light emitted from the light guide plate 291 can only be emitted from the light hole 295a of the light-shielding sheet 295, so that the backlight of the key 30 is soft and uniform, and the possibility that the light emitted from the light guide plate 291 is directly emitted from the gap between the key cap 32 and the key cap 32 to cause a user to feel dazzling is reduced. The light shielding sheet 295 can also shield the portion of the touch sensing electrode 21 between the key cap 32 and the key cap 32, so that the light shielding sheet 295 can protect the touch sensing electrode 21, the touch sensing electrode 21 is not easily observed from the outside of the key touch keyboard 10, and the possibility that the touch sensing electrode 21 is broken due to the fact that an external object scrapes the touch sensing electrode 21 is also reduced.

In some examples, the first catching portion 231 of the non-metallic connector 23 is inserted into the light transmission hole 295a, and the scissor assembly 31 is rotatably connected to the first catching portion 231.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection through an intermediate medium, a connection between two elements, or an interaction between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Reference throughout this specification to apparatus or components, in embodiments or applications, means or components must be constructed and operated in a particular orientation and therefore should not be construed as limiting the present embodiments. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and claims of the embodiments of the application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The term "plurality" herein means two or more. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division".

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application.

It should be understood that, in the embodiment of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.

Claims

1. A touch-tone keyboard (10), comprising:

a circuit board assembly (20) and a plurality of keys (30) disposed on the circuit board assembly (20);

the circuit board assembly (20) comprises touch sensing electrodes (21), a connecting hole (22) and a nonmetal connecting piece (23), wherein the touch sensing electrodes (21) define a touch area (20 a), at least part of keys (30) in the plurality of keys (30) are located in the touch area (20 a), and the nonmetal connecting piece (23) is connected to the connecting hole (22);

the key (30) comprises a scissor-foot assembly (31) and a key cap (32), wherein the scissor-foot assembly (31) is respectively connected with the key cap (32) and the non-metal connecting piece (23) in a rotating manner.

2. The touch-tone keyboard (10) of claim 1, wherein the non-metal connecting member (23) comprises a first engaging portion (231), the first engaging portion (231) is located on a side of the circuit board assembly (20) facing the key cap (32), the scissor-foot assembly (31) is rotatably engaged with the first engaging portion (231), and an overlapping area exists between an orthographic projection of the first engaging portion (231) on the circuit board assembly (20) and an orthographic projection of the touch-sensitive electrode (21).

3. The touch-typable keyboard (10) of claim 2, wherein said non-metallic connector (23) further comprises a second snap-in portion (232), said second snap-in portion (232) being located on a side of said circuit board assembly (20) facing away from said key cap (32), at least a portion of said second snap-in portion (232) abutting a side surface of said circuit board assembly (20) facing away from said key cap (32).

4. The touch-tone keypad (10) of claim 3, wherein the circuit board assembly (20) includes a circuit board (24), the touch sensing electrodes (21) and the connecting holes (22) are disposed on the circuit board (24), the first engaging portion (231) and the second engaging portion (232) are respectively disposed on upper and lower sides of the circuit board (24), and the touch sensing electrodes (21) are disposed to be away from the connecting holes (22).

5. The touch-tone keyboard (10) of claim 4, wherein the circuit board assembly (20) further includes a first backlight group (26), the first backlight group (26) being located within the touch-sensitive area (20 a) and below the keys (30).

6. The touch-tone keypad (10) of claim 5, wherein the first backlight set (26) is configured to emit a first color when the touch-tone keypad (10) is enabled for touch functionality, and wherein the first backlight set (26) is configured to emit a second color when the touch-tone keypad (10) is enabled for input functionality, wherein the first color is different from the second color.

7. The touch-tone keyboard (10) of claim 5 or 6, wherein the first backlight lamp set (26) comprises a backlight lamp (261), the backlight lamp (261) is disposed under the key cap (32) of the key (30), and the touch-sensitive electrode (21) is shielded from the backlight lamp (261).

8. The touch-tone keyboard (10) according to any one of claims 5 to 7, wherein the circuit board assembly (20) further includes a second backlight set (27), the second backlight set (27) is disposed in a non-touch region, when the touch-tone keyboard (10) starts a touch function, the light emission colors of the first backlight set (26) and the second backlight set (27) in the touch region (20 a) are different, and when the touch-tone keyboard (10) starts an input function, the light emission colors of the first backlight set (26) and the second backlight set (27) are the same.

9. The touch-tone keyboard (10) according to claim 2, wherein the circuit board assembly (20) comprises a circuit board (24) and a backlight module (29), the backlight module (29) comprises a light guide plate (291), the light guide plate (291) is disposed on a side of the circuit board (24) facing the key cap (32), the touch sensing electrodes (21) are disposed on a surface of the circuit board (24) facing the light guide plate (291), and the connection holes (22) are disposed on the light guide plate (291);

nonmetal connecting piece (23) still includes second joint portion (232), first joint portion (231) with second joint portion (232) are located respectively the upper and lower both sides of light guide plate (291).

10. The push-button touch keyboard (10) according to claim 9, wherein the touch sensing electrode (21) is disposed on the circuit board (24) in a region corresponding to the connection hole (22).

11. The touch-key keyboard (10) according to claim 9 or 10, wherein the backlight module (29) further comprises a light barrier (293), the light barrier (293) divides the light guide plate (291) into a first region (291 a) and a second region (291 b), the touch region (20 a) corresponds to the first region (291 a), when the touch function of the touch-key keyboard (10) is activated, the light emitting colors of the first region (291 a) and the second region (291 b) are different, and when the input function of the touch-key keyboard (10) is activated, the light emitting colors of the first region (291 a) and the second region (291 b) are the same.

12. The touch-tone keyboard (10) according to any one of claims 9 to 11, wherein the backlight module (29) further comprises a light-shielding sheet (295), the light-shielding sheet (295) is disposed on a side of the light guide plate (291) close to the key cap (32), the light-shielding sheet (295) is provided with a light-transmitting hole (295 a) corresponding to the key (30), and an orthographic area of the key cap (32) facing the light-shielding sheet (295) is larger than an orthographic area of the light-transmitting hole (295 a).

13. The touch-typable keyboard (10) according to any one of claims 9 to 12, wherein said backlight module (29) further comprises a light-emitting unit (292), said light-emitting unit (292) being configured to inject light rays towards said light-guiding plate (291).

14. The touch-tone keypad (10) of claim 4 or 9, wherein the touch-sensitive electrodes (21) are provided on the circuit board (24) by a coating, plating, etching or printing process.

15. The touch-tone keyboard (10) of any one of claims 1-14, wherein the touch-tone keyboard (10) further comprises a wireless communication antenna (40), the wireless communication antenna (40) being disposed on the circuit board assembly (20), the wireless communication antenna (40) being located on one side of the touch sensing electrode (21).

16. The touch-typable keyboard (10) according to any one of claims 1 to 15, wherein said keys (30) further comprise an elastic member (33), said elastic member (33) being disposed on a surface of said key cap (32) facing said circuit board assembly (20), said elastic member (33) being configured to provide a resilient force to said key cap (32).

17. The touch-typable keypad (10) according to claim 16, wherein said circuit board assembly (20) includes a key sensing electrode (28), said key (30) further includes a conductive layer (34), said conductive layer (34) is disposed on a portion of said elastic member (33) adjacent to said circuit board assembly (20), a capacitor is formed between said key sensing electrode (28) and said conductive layer (34), and said elastic member (33) moves up or down to change a capacitance value of said capacitor.

18. An electronic device, comprising: a touch-tone keypad (10) as claimed in any one of claims 1 to 17.