WO2022262484A1 - Key-type touch keyboard and electronic device - Google Patents

Abstract

Embodiments of the present application provide a key-type touch keyboard and an electronic device. The key-type touch keyboard comprises: a circuit board assembly and multiple keys provided on the circuit board assembly; the circuit board assembly comprises a touch sensing electrode, a connecting hole, and a non-metallic connecting member; a touch region is defined in the touch sensing electrode, and at least some keys among the multiple keys are located in the touch region; the non-metallic connecting member is connected to the connecting hole; and each key comprises a scissor switch assembly and a keycap, the scissor switch assembly being rotatably connected to the keycap and the non-metallic connecting member, separately. According to the key-type touch keyboard of the embodiments of the present application, the problem in the prior art of poor sensitivity of the touch sensing electrode can be solved.

Description

Push-button touch keyboard and electronic equipment

This application claims the priority of the Chinese patent application with the application number 202110679916.4 and the application name "button-type touch keyboard and electronic equipment" submitted to the China Patent Office on June 18, 2021, the entire contents of which are incorporated in this application by reference middle.

technical field

The embodiments of the present application relate to the technical field of terminals, and in particular to a key-type touch keyboard and electronic equipment.

Background technique

With the explosive growth of portable notebook computers, smart phones and tablet computers (portable equipment, PAD), more and more application software requires higher-precision touch, such as painting software. The traditional keyboard usually integrates two independent functional modules of input and touch panel, which makes the keyboard itself bulky and inconvenient to carry.

Some existing keyboards integrate the touch function in the key input area, and the touch function and input function can be switched to facilitate the user to perform touch or input actions, thereby reducing the volume of the keyboard itself and realizing the miniaturization of the keyboard. This type of keyboard includes a metal substrate, touch sensing electrodes, scissor feet, and keycaps. The metal substrate is used to support the touch sensing circuit board, scissor feet and keycaps. A metal buckle is directly formed on the metal substrate, and the lower end of the scissor foot is rotatably connected to the metal buckle, and the upper end of the scissor foot is rotatably connected to the keycap. The touch sensing circuit board is arranged above the metal substrate.

However, since the touch sensing electrodes set on the metal substrate need to avoid the metal buckle, the touch sensing electrodes cannot sense in the avoiding area and can only be compensated by the algorithm, which leads to the deterioration of the sensitivity of the touch sensing electrodes and affects the touch control. Functional experience.

Contents of the invention

Embodiments of the present application provide a key-type touch keyboard and electronic equipment, which can solve the problem of poor sensitivity of touch sensing electrodes in the prior art.

The first aspect of the present application provides a key-type touch keyboard, including:

A circuit board assembly and a plurality of buttons arranged on the circuit board assembly;

The circuit board assembly includes touch sensing electrodes, connection holes and non-metallic connectors, the touch sensing electrodes define a touch area, and at least some of the keys are located in the touch area, and the non-metallic connectors are connected to the connection holes ;

The key comprises a scissor foot assembly and a keycap, and the scissor foot assembly is respectively rotatably connected with the keycap and the non-metal connecting piece.

In the push-button touch keyboard provided by the embodiment of the present application, the connecting holes on the circuit board assembly can be used to connect and fix the non-metallic connector, and the keycap is connected to the non-metallic connector through the scissor foot assembly. On the one hand, since the size of the connection hole only needs to meet the predetermined requirements for the connection strength of the non-metallic connector and the circuit board assembly, and the connection strength of the non-metallic connector and the circuit board assembly is not high, the size of the connection hole can be The setting is relatively small; on the other hand, the non-metallic connector has little or no interference to the touch sensing signal. To sum up, in the embodiment of the present application, the circuit board assembly replaces the metal substrate in the prior art. The shape of the connection holes and non-metallic connectors on the circuit board assembly has little influence on the design and layout of the touch sensing electrodes, so that the touch sensing electrodes can be designed in a more regular shape, reducing the risk of the touch sensing electrodes due to their own irregular shape design. Possibility of causing poor touch sensitivity.

In a possible implementation manner, the non-metallic connector includes a first clamping part, the first clamping part is located on the side of the circuit board assembly facing the keycap, and the scissor foot assembly is rotatably clamped to the first clamping part , there is an overlapping area between the orthographic projection of the first engaging portion on the circuit board assembly and the 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 the side of the circuit board assembly facing away from the keycap, at least part of the second clamping portion is connected to the circuit board assembly The surface of the side facing away from the keycap abuts.

In a possible implementation manner, the circuit board assembly includes a circuit board, the touch sensing electrodes and the connection holes are both arranged on the circuit board, the first clamping part and the second clamping part are respectively located on the upper and lower sides of the circuit board, and the touch Control the induction electrode to avoid the connection hole setting.

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

In a possible implementation manner, when the touch function of the button-type touch keyboard is turned on, the first backlight group is used to emit the first color; when the button-type touch keyboard turns on the input function, the first backlight group is used to emit A second color, wherein the first color and the second color are different.

In a possible implementation manner, the first backlight group includes a backlight, at least some of the backlights are provided under the keycaps of the keys, and the touch sensing electrodes avoid the backlight.

In a possible implementation manner, the circuit board assembly further includes a second backlight group, and the second backlight group is arranged in the non-touch area. When the button-type touch keyboard turns on the touch function, the first The luminous colors of the backlight group and the second backlight group are different, and when the key-type touch keyboard starts the input function, the luminous colors of the first backlight group and the second backlight group are the same.

In a possible implementation manner, the circuit board assembly includes a circuit board and a backlight module, the backlight module includes a light guide plate, the light guide plate is arranged on the side of the circuit board facing the keycap, and the touch sensing electrodes are arranged on the side of the circuit board facing the guide. On the surface of the light plate, the connection holes are arranged on the light guide plate;

The non-metallic connector further includes a second clamping portion, and the first clamping portion and the second clamping portion are respectively located on the upper and lower sides of the light guide plate.

In a possible implementation manner, the area on the circuit board corresponding to the connection hole is provided with a touch sensing electrode.

In a possible implementation manner, the backlight module further includes a light blocking member, the light blocking member divides the light guide plate into a first area and a second area, the touch area corresponds to the first area, and the key-type touch keyboard turns on the touch area. When the control function is enabled, the luminous colors of the first area and the second area are different, and when the input function of the key-type touch keyboard is turned on, the luminous colors of the first area and the second area are the same.

In a possible implementation, the backlight module further includes a light-shielding sheet, which is located on the side of the light guide plate close to the keycap, and the light-shielding sheet is provided with a light-transmitting hole corresponding to the position of the key, and the orthographic projection area of the keycap facing the light-shielding sheet is larger than Orthographic projection area of the light hole.

In a possible implementation manner, the backlight module further includes a light emitting unit, which is used for incident light to the light guide plate.

In a possible implementation manner, the touch sensing electrodes are disposed on the circuit board of the circuit board assembly through coating, electroplating, etching or printing processes.

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

In a possible implementation manner, the key further includes an elastic member, the elastic member is disposed on the surface of the keycap facing the circuit board assembly, and the elastic member is used to provide resilience to the keycap.

In a possible implementation manner, the circuit board assembly includes a button sensing electrode, and the button further includes a conductive layer. The conductive layer is arranged on the part of the elastic member close to the circuit board assembly, and a capacitance is formed between the button sensing electrode and the conductive layer. Moving up or down can change the capacitance value of the capacitor.

The second aspect of the embodiment of the present application provides an electronic device, including: the above-mentioned key-type touch keyboard.

An electronic device provided by an embodiment of the present application includes a key-type touch keyboard. In the push-button touch keyboard, the connection holes on the circuit board components can be used to connect and fix the non-metallic connectors, and the keycaps are connected to the non-metallic connectors through the scissor foot components. On the one hand, since the size of the connection hole only needs to meet the predetermined requirements for the connection strength of the non-metallic connector and the circuit board assembly, and the connection strength of the non-metallic connector and the circuit board assembly is not high, the size of the connection hole can be The setting is relatively small; on the other hand, the non-metallic connector has little or no interference to the touch sensing signal. To sum up, in the embodiment of the present application, the circuit board assembly replaces the metal substrate in the prior art. The shape of the connection holes and non-metallic connectors on the circuit board assembly has little influence on the design and layout of the touch sensing electrodes, so that the touch sensing electrodes can be designed in a more regular shape, reducing the risk of the touch sensing electrodes due to their own irregular shape design. Possibility of causing poor touch sensitivity.

Description of drawings

FIG. 1 is a schematic diagram of a scene provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of another scenario provided by the embodiment of the present application;

FIG. 3 is a schematic diagram of another scenario provided by the embodiment of the present application;

FIG. 4 is a schematic diagram of another scenario provided by the embodiment of the present application;

FIG. 5 is a schematic diagram of a partial exploded structure of a button-type touch keyboard provided by an embodiment of the present application;

FIG. 6 is a schematic top view of a key-type touch keyboard provided by an embodiment of the present application;

Fig. 7 is a partial cross-sectional structural schematic diagram along the A-A direction in Fig. 6;

FIG. 8 is a partial top structural schematic diagram of a circuit board assembly provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a display backlight in a touch area provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of a connection structure between a circuit board assembly and a wireless communication antenna provided by an embodiment of the present application;

FIG. 11 is a partial cross-sectional structural schematic diagram of a push-button touch keyboard provided by an embodiment of the present application;

Fig. 12 is a partial top structural schematic diagram of a circuit board assembly provided by another embodiment of the present application;

FIG. 13 is a schematic top view of a key-type touch keyboard provided by another embodiment of the present application;

FIG. 14 is a schematic diagram of a connection structure between a circuit board and a touch sensing electrode provided in another embodiment of the present application;

FIG. 15 is a schematic top view of a backlight module provided by an embodiment of the present application;

Fig. 16 is a partial cross-sectional structural schematic diagram along the B-B direction in Fig. 13;

FIG. 17 is a schematic structural diagram of a light-shielding sheet provided by an embodiment of the present application.

Explanation of reference signs:

1. Electronic equipment;

2. Display screen;

3. The host body;

4. Tablet computer;

10. Button touch keyboard;

20. Circuit board assembly; 20a, touch area; 20b, reinforcement board; 21, touch sensing electrode; 211, electrode unit; 22, connection hole; 23, non-metallic connector; 231, first clamping part; 232 , the second clamping part; 233, the connection part; 24, the circuit board; 25, the adhesive layer; 26, the first backlight group; 261, the backlight; 27, the second backlight group; 28, the button sensing electrode; 29. Backlight module; 291. Light guide plate; 291a. First area; 291b. Second area; 292. Light-emitting unit; 293. Light blocking member; 294. Adhesive member; ;

30, button; 31, scissor foot assembly; 31a, rotating shaft; 311, outer scissor foot; 312, inner scissor foot; 32, keycap; 33, elastic member; 331, recessed part; 34, conductive layer;

40. Wireless communication antenna.

detailed description

The embodiment of the present application provides an electronic device 1, the electronic device 1 can be a desktop computer, a notebook computer (laptop), a tablet computer (Table), an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a handheld computer, or a walkie-talkie , netbook, POS machine, personal digital assistant (personal digital assistant, PDA) and other mobile terminals, fixed terminals or foldable devices.

Fig. 1 schematically shows a three-dimensional structure of an electronic device 1 according to 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 host body 3 can be rotatably connected. For example, the display screen 2 and the host body 3 can be connected by a rotating shaft; or, the display screen 2 and the host body 3 can be connected by a hinge structure; or, in some examples, the display screen 2 and the host body 3 can 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 use, the display screen 2 and the host body 3 can 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 electrical connection between the display screen 2 and the host body 3 can be realized through contacts, or the display screen 2 2 and the host body 3 are connected via a flexible printed circuit (FPC), or the display screen 2 and the host body 3 are electrically connected by wires, and in addition, the display screen 2 and the host body 3 can also be connected via a wireless signal. Make a wireless connection.

Referring to FIG. 1 , in order to realize the input of the electronic device 1 , the electronic device 1 may further include a key-type touch keyboard 10 . The push-button touch keyboard 10 can be arranged on the host body 3 . The key-type touch keyboard 10 is electrically connected with the control unit in the host body 3 . The key-type touch keyboard 10 is used as an input device of the electronic device 1 . The key-type touch keyboard 10 can be used to input characters or operation instructions, and can also control the movement of the cursor or perform multi-gesture operations by touch.

Fig. 2 schematically shows the structure of an electronic device 1 in another embodiment. The electronic device 1 of this 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 set independently. The display screen 2 is electrically connected to the host body 3 through a data line to realize the display effect of the display screen 2 . The push-button touch keyboard 10 and the host body 3 are set independently. The push-button touch keyboard 10 is electrically connected to the host body 3 through a data line, so the push-button touch keyboard 10 can be used as an input device of the electronic device 1 . In some other possible embodiments, the key-type touch keyboard 10 is wirelessly connected to the host body 3 through a wireless signal (such as a Bluetooth signal).

Fig. 3 schematically shows a three-dimensional structure of an electronic device 1 in another embodiment. Referring to FIG. 3 , the electronic device 1 may include: a tablet computer 4 and a key-type touch keyboard 10 . The tablet computer 4 and the push-button touch keyboard 10 can be mutually independent devices, for example, detachable between the tablet computer 4 and the push-button touch keyboard 10, when in use, the tablet computer 4 is placed on the push-button touch keyboard 10 In addition, after use, the tablet computer 4 and the key-type touch keyboard 10 can be separated from each other.

Exemplarily, the electrical connection between the tablet computer 4 and the key-type touch keyboard 10 can be realized through contacts. Alternatively, the tablet computer 4 is electrically connected to the key-type touch keyboard 10 through wires. Alternatively, the tablet computer 4 and the push-button touch keyboard 10 may also be wirelessly connected through a wireless signal (such as a Bluetooth signal). Wherein, in the embodiment of the present application, the key-type touch keyboard 10 may be, for example, the wireless keyboard shown in FIG. 3 .

Fig. 4 schematically shows a three-dimensional structure of an electronic device 1 in another embodiment. Referring to Fig. 4, both the tablet computer 4 and the button-type touch keyboard 10 can be placed and used at a predetermined distance from each other, and the connection between the tablet computer 4 and the button-type touch keyboard 10 can be carried out through wireless signals (such as bluetooth signals). The wireless connection enables the user to arbitrarily adjust the placement position of the push-button touch keyboard 10 according to personal usage habits. Wherein, in the embodiment of the present application, the key-type touch keyboard 10 may be, for example, the wireless keyboard shown in FIG. 4 .

In one embodiment, the tablet computer 4 and the key-type touch keyboard 10 can be interconnected through a communication network to realize wireless signal interaction. The communication network can be but not limited to: WI-FI hotspot network, WI-FI point-to-point (peer-to-peer, P2P) network, Bluetooth network, zigbee network or near field communication (near field communication, NFC) network and other short-distance Communications network. The key-type touch keyboard 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 key-type touch keyboard 10 .

In a keyboard integrated with a touch function, the keyboard mainly includes: a substrate, a scissor foot and a keycap, wherein the substrate is integrally formed with a buckle for rotating and connecting with the scissor foot. The touch sensing electrodes are arranged on the substrate. The touch-sensing electrodes are located under the keycaps. Since the substrate is a metal plate, and the buckle used to connect the scissors feet is a metal buckle integrally formed by the metal plate, and the metal buckle will cause signal interference to the touch sensing electrodes on the touch sensing circuit board, so the touch sensor The sensing electrodes need to avoid the metal buckle, that is, in the thickness direction of the keyboard, there is no overlapping area between the orthographic projection of the metal buckle and the orthographic projection of the touch sensing electrode, so as to ensure that the touch sensing electrode is not interfered by the metal buckle.

However, since the touch sensing electrodes need to avoid these buckles and cannot be distributed under the buckles, the overall shape of the touch sensing electrodes is irregular, and in the same touch area, there are fewer touch sensing electrodes, resulting in touch The position where the touch sensing electrode is not set in the area cannot execute the touch command or needs to be compensated by an algorithm, which eventually leads to insensitive touch feedback and inaccurate positioning of the keyboard.

Based on the problems found above, the embodiment of the present application provides a push-button touch keyboard 10, by replacing the metal substrate in the keyboard with a circuit board assembly, and opening a connection hole on the circuit board assembly, the part of the non-metallic connector fixed in the connecting hole. A part of the non-metallic connecting piece forms a buckle on the circuit board assembly and is engaged with the scissors assembly. The keycaps are connected to non-metallic connectors through scissor foot assemblies. Since the non-metallic connector does not interfere with the touch sensing signal, when the touch sensing electrode is set on the circuit board assembly, it only needs to avoid the connection hole, and it is not necessary at the position where the non-metallic connector and the scissors component are engaged. Avoid, in this way, the touch sensing electrodes can be set under the engagement position of the non-metallic connector and the scissor foot assembly, and the touch sensing electrodes and the non-metallic connector can overlap in the thickness direction of the keyboard, so that the same touch area Inside, more touch sensing electrodes are added, and the touch sensing electrodes can be designed into a more regular shape to make the touch more sensitive.

The implementation of the key-type touch keyboard 10 provided by the embodiment of the present application will be described in detail below.

FIG. 5 schematically shows an exploded structure of the push-button touch keyboard 10 according to an embodiment. Referring to FIG. 5 , the key-type touch keyboard 10 of the embodiment of the present application 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 button 30 are stacked. The circuit board assembly 20 can provide support for each key 30 . The types of keys 30 can refer to existing keyboards, for example, the plurality of keys 30 include number keys, function keys (such as Delete key, Insert key, etc.), and letter keys. According to the size of the button 30 itself, it can be divided into a single button and a multiple button. The single key refers to the square key 30 above the keyboard, such as the key 30 corresponding to each letter and each number. The multiple keys are keys 30 other than single keys, 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 touch sensing electrodes 21 , connecting holes 22 and non-metal connecting parts 23 . The touch sensing electrodes 21 define a touch area 20a, and at least some of the keys 30 are located in the touch area 20a. The non-metal connecting piece 23 is connected to the connecting hole 22 . The key 30 includes a scissors assembly 31 and a key cap 32 . The scissor foot assembly 31 is rotatably connected with the keycap 32 and the non-metal connecting piece 23 respectively.

The touch sensing electrode 21 can control the position of the cursor or execute related operation instructions by sensing the motion of the user's finger. For example, if the finger slides on the touch area 20a, the cursor can be moved. The object can be selected by tapping the finger on the touch area 20a once. Tap twice on the touch area 20a with a finger, and then an object can be double-clicked. Multi-gesture functions can be realized, for example, on the touch area 20a, the three-finger sliding action can display the desktop, or the three-finger left sliding action can realize page return.

In some embodiments, the touch sensing electrodes 21 may be capacitive sensing electrodes. When the user's finger approaches the touch sensing electrode 21, the capacitance value of the corresponding position of the touch sensing electrode 21 will change. Therefore, when the finger performs a related action on the touch area 20a, the capacitance value of the corresponding position of the touch sensing electrode 21 will change. change, so that the touch sensing electrode 21 can recognize the motion of the finger based on the change of the capacitance value.

In the embodiment of the present application, at least some of the keys 30 are located in the touch area 20 a , that is, this part of the keys 30 are stacked with the touch sensing electrodes 21 . When the key-type touch keyboard 10 is in the input function mode, the key 30 located in the touch area 20a can be pressed normally to perform the input function.

In some embodiments, FIG. 6 schematically shows a top view structure of a key-type touch keyboard 10 of an embodiment. Referring to FIG. 6 , the push-button touch keyboard 10 also includes a left-click key and a right-click key. The left-click key and the right-click key are located below the touch area 20a. The left-click and right-click keys function like the left-click and right-click keys of a mouse. The left-click and right-click keys can cooperate with the touch function to realize more command operations. A left-click key and a right-click key can be set separately on the key-type touch keyboard 10 . The left-click and right-click keys are located on the left and right sides of the space bar, respectively. Alternatively, select two keys on the key-type touch keyboard 10 , for example, the letter F key and the letter J key, and in the touch function mode, the letter F key and the letter J key are respectively used as the left-click key and the right-click key. In the input function mode, the letter F key and the letter J key can input letter F and letter J respectively.

Alternatively, divide the long space bar into two left and right keys. In the touch function mode, the left and right buttons are respectively used as the left-click button and the right-click button. When entering function mode, both the left and right keys can input spaces.

FIG. 7 schematically shows a partial cross-sectional structure along the direction A-A in FIG. 6 . Referring to FIGS. 6 and 7 , the connection holes 22 on the circuit board assembly 20 are used to provide connection positions for the non-metallic connectors 23 . A part of the non-metal connecting piece 23 is located in the connecting hole 22 . After the non-metallic connector 23 is connected to the circuit board assembly 20 , when the non-metallic connector 23 is subjected to an external force, the non-metallic connector 23 is not easy to come out of the connection hole 22 . The circuit board assembly 20 and the non-metallic connector 23 can be independent of each other. In some embodiments, the non-metal connecting member 23 can be connected to the circuit board assembly 20 by being clipped to the connection hole 22 . In some other embodiments, the non-metallic connector 23 can be injection-molded on the circuit board assembly 20 through an injection molding process, and a part of the non-metallic connector 23 is located in the connection hole 22, so that the non-metallic connector 23 and the circuit board assembly 20 interconnected. Alternatively, the non-metallic connecting piece 23 can be connected to the circuit board assembly 20 by riveting or clamping.

The key 30 of the embodiment of the present application includes a scissors assembly 31 and a key cap 32 . The scissor foot assembly 31 is rotatably connected with the keycap 32 and the non-metal connecting piece 23 respectively. The scissors assembly 31 is disposed under the keycap 32 . The scissor foot assembly 31 is configured to provide good support for the keycap 32, so that the keycap 32 can be pressed to balance the stress, so that the user can press the keycap 32 with a fixed pressure at any position on the keycap 32 to lower the keycap. 32 Possibility of uneven pressure or stuck keys.

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

In some embodiments, scissor foot assembly 31 includes an outer scissor foot 311 and an inner scissor foot 312 . The outer scissors feet 311 and the inner scissors feet 312 cross each other and are rotatably connected. The respective lower ends of the outer scissors feet 311 and the inner scissors feet 312 are rotatably connected with the non-metal connecting piece 23 . The upper ends of the outer scissors 311 and the inner scissors 312 are rotatably connected with the keycap 32 . In some examples, both the outer scissors feet 311 and the inner scissors feet 312 may have a frame structure.

In the embodiment of the present application, the material of the non-metal connecting member 23 may be an insulating material, such as plastic or rubber. The material of the outer scissor feet 311 and the inner scissor feet 312 can be plastic. The matching relationship between the outer scissors 311 and the inner scissors 312 can refer to the structure of the scissors in the existing key 30 . The material of the keycap 32 can be plastic.

In the key-type touch keyboard 10 of the embodiment of the present application, the circuit board assembly 20 provides support for the keys 30 . 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 when the key-type touch keyboard 10 is in the touch function mode, corresponding commands can be input by touch. When the key-type touch keyboard 10 is in the input function mode, the key 30 can be pressed to perform the input function. Therefore, the push-button touch keyboard 10 of the embodiment of the present application has a touch function and an input function, and the touch-sensing electrodes 21 and the buttons 30 are stacked so that there is no need to divide a separate one on the push-button touch keyboard 10 The touch sensing electrodes 21 are arranged in the area, which is beneficial to reduce the overall size of the key-type touch keyboard 10 and realize the miniaturization of the key-type touch keyboard 10 . In the embodiment of the present application, the connecting hole 22 on the circuit board assembly 20 can be used to connect and fix the non-metallic connecting member 23 , and the keycap 32 is connected to the non-metallic connecting member 23 through the scissor foot assembly 31 . On the one hand, because the size of the connection hole 22 only needs to meet the predetermined requirements for the connection strength of the non-metallic connector 23 and the circuit board assembly 20, and the connection strength of the non-metallic connector 23 and the circuit board assembly 20 is not high, therefore The size of the connecting hole 22 can be set to be relatively small; on the other hand, the non-metallic connecting piece 23 has little or no interference to the touch sensing signal. To sum up, in the embodiment of the present application, the circuit board assembly 20 replaces the metal substrate in the prior art. The shape of the connection hole 22 and the non-metallic connector 23 on the circuit board assembly 20 has little influence on the design and layout of the touch sensing electrode 21, so that the touch sensing electrode 21 can be designed into a relatively regular shape, reducing the impact of the touch sensing electrode 21. The possibility of poor touch sensitivity due to irregular shape design.

It should be noted that the design of the touch sensing electrodes 21 in a relatively regular shape means that the overall pattern formed by the touch sensing electrodes 21 itself is relatively regular and orderly.

In some embodiments, for each key 30 , four non-metallic connecting pieces 23 may be disposed under the keycap 32 . The four non-metallic connectors 23 are respectively provided at the four corners of the keycap 32 . The scissor foot assemblies 31 are respectively connected in rotation with the four non-metal connecting pieces 23 . In the embodiment where the scissors assembly 31 includes an outer scissors 311 and an inner scissors 312, the lower ends of the outer scissors 311 are respectively connected to two adjacent non-metallic connectors 23 by rotation, while the lower ends of the inner scissors 312 are respectively rotated. It is connected to two other adjacent non-metal connecting pieces 23 .

In some embodiments, the non-metallic connector 23 includes a first engaging portion 231 . The first engaging portion 231 is located on a side of the circuit board assembly 20 facing the keycap 32 . The scissor foot assembly 31 is rotatably engaged with the first engaging portion 231 . At least part of the first engaging portion 231 may be disposed above the touch sensing electrode 21 . The orthographic projection of the first engaging portion 231 on the circuit board assembly 20 overlaps with the orthographic projection of the touch sensing electrode 21 . Since the non-metallic connector 23 has little or no interference to the touch sensing signal, the touch sensing electrode 21 does not need to avoid the part of the first locking part 231 that is arranged above the touch sensing electrode 21, thereby effectively reducing the touch sensing electrode 21. Control the avoidance area of the sensing electrode 21.

The non-metallic connector 23 includes a connecting portion 233 . At least part of the connecting portion 233 is located in the connecting hole 22 . The first engaging portion 231 is located outside the connecting hole 22 and connected to the connecting portion 233 .

In some examples, a gap is formed between the first engaging portion 231 and the circuit board assembly 20 , and the scissor foot assembly 31 includes a rotating shaft portion 31a that is engaged in the gap. The surface of the first engaging portion 231 facing the circuit board assembly 20 may be a plane, and the shaft portion 31a may abut against the surface of the first engaging portion 231 facing the circuit board assembly 20 . The contact area between the shaft portion 31a and the surface of the first locking portion 231 facing the circuit board assembly 20 is small, so that the rotation resistance of the shaft portion 31a can be effectively reduced, which is beneficial to reduce the wear rate of the shaft portion 31a.

In some examples, a slot may be provided on the first engaging portion 231 , and the scissors foot assembly 31 includes a shaft portion 31a that is engaged with the slot. Exemplarily, the first engaging portion 231 extends along the radial direction of the connecting hole 22 . The opening of the slot on the first engaging portion 231 is located on the surface of the first engaging portion 231 facing the circuit board assembly 20 .

In some embodiments, the non-metallic connector 23 further includes a second locking portion 232 . The second engaging portion 232 is located on a side of the circuit board assembly 20 facing away from the keycap 32 . The second engaging portion 232 protrudes from a surface of the circuit board assembly 20 facing away from the keycap 32 . At least part of the second engaging portion 232 abuts against a surface of the circuit board assembly 20 facing away from the keycap 32 . The second clamping portion 232 can improve the stability and reliability of the connection between the non-metallic connector 23 and the circuit board assembly 20 . Since the second engaging portion 232 abuts against the surface of the circuit board assembly 20 facing away from the keycap 32, the second engaging portion 232 acts as a restraining limit, so when the first engaging portion 231 is touched by the scissor foot When the upward pulling force of the component 31 acts, the non-metallic connector 23 is not easy to escape from the connection hole 22 and be separated from the circuit board component 20 .

In some examples, the second engaging portion 232 extends along the radial direction of the connecting hole 22 . The radial dimensions of the first engaging portion 231 and the second engaging portion 232 are larger than the maximum radial dimension of the connecting hole 22 , and the first engaging portion 231 and the second engaging portion 232 can respectively cover the connecting hole 22 . The first engaging portion 231 and the second engaging portion 232 are respectively connected to the upper end and the lower end of the connecting portion 233 .

In some examples, the second engaging portion 232 extends along the radial direction of the connecting hole 22 . The extending direction of the first engaging portion 231 and the second engaging portion 232 may be the same, that is, both the first engaging portion 231 and the second engaging portion 232 extend along the same direction. The first engaging portion 231 and the second engaging portion 232 are respectively connected to the upper end and the lower end of the connecting portion 233 .

FIG. 8 schematically shows a top view structure of the circuit board assembly 20 of an embodiment. Referring to FIGS. 7 and 8 , the circuit board assembly 20 includes a circuit board 24 . The circuit board 24 provides support for the key 30 . Both 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 located on upper and lower sides of the circuit board 24 . The connection hole 22 penetrates the circuit board 24 . The touch sensing electrodes 21 are arranged avoiding the connection holes 22 . The non-metallic connector 23 is directly connected to the circuit board 24 .

In some examples, the circuit board 24 itself is light in weight, which is beneficial to reduce the overall weight of the touch-button keyboard 10 and realize the weight reduction of the touch-button keyboard 10 . In the embodiment of the present application, the circuit board 24 is not easily bent and deformed. The circuit board 24 may be a printed circuit board (Printed Circuit Board, PCB).

In some examples, circuit board assembly 20 also includes stiffeners. The reinforcing sheet is disposed on the side of the circuit board 24 facing away from the keycap. The reinforcement sheet is connected to the circuit board 24 , for example, the reinforcement sheet is bonded 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 the circuit board 24 being broken due to bending. Exemplarily, the thickness of the reinforcing sheet is 0.3 mm to 0.4 mm. The reinforcement sheet can be a steel sheet.

In some examples, when the material of the non-metallic connector 23 is plastic or rubber, the non-metallic connector 23 can be formed by injection molding on the circuit board 24 through an injection molding process, so that the non-metallic connector 23 and the circuit board 24 are connected to each other to form a the whole frame.

The touch sensing electrodes 21 are directly formed on the circuit board 24, so that the touch sensing electrodes 21 and the circuit board 24 form an integral structure, so that the touch sensing electrodes 21 are independently arranged as separate structural parts in the prior art , the position of the touch sensing electrode 21 itself in the embodiment of the present application will not move, reducing the position shift of the touch sensing electrode 21 that causes the position of the touch area 20a to change or the touch sensing electrode 21 to wrinkle and cause touch possibility of failure. Exemplarily, the touch sensing electrodes 21 can be disposed on the circuit board 24 of the circuit board assembly 20 through coating, electroplating, etching or printing processes.

In some examples, the touch sensing electrodes 21 may include a plurality of electrode units 211 in a prism or square pattern. Each electrode unit 211 in the touch sensing electrode 21 is arranged in order. Two adjacent electrode units 211 are electrically connected to each other.

The circuit board assembly 20 also includes an adhesive layer 25 . The adhesive layer 25 is disposed on the surface of the circuit board 24 facing away from the keycap 32 . The circuit board 24 can be adhered to the corresponding installation platform through the adhesive layer 25, so that the push-button touch keyboard 10 is fixed on the installation platform. Exemplarily, the adhesive layer 25 may be double-sided tape or liquid adhesive.

Since the second engaging portion 232 abuts against the side surface of the circuit board 24 facing away from the keycap 32, the position corresponding to the second engaging portion 232 on the circuit board 24 does not need to be provided with a sinking portion, so that the circuit board 24 as a whole The thickness is set to be uniform and consistent, so that the overall mechanical strength and deformation resistance of the circuit board 24 are strong, thereby reducing the possibility that the second clamping portion 232 exerts compressive stress on the circuit board 24 and causes the circuit board 24 to be prone to cracks.

FIG. 9 schematically shows a top view structure of a key-type touch keyboard 10 according to an embodiment. Referring to FIGS. 7 and 9 , the circuit board assembly 20 further includes a first backlight group 26 . The first backlight group 26 is located in the touch area 20a and below the one or more keys 30 . The first backlight group 26 can be used to provide backlight for the keys 30 located in the touch area 20a, so that in a dark environment, the user can also clearly observe the corresponding keys 30, reducing the possibility of misoperation of the keys 30, Improve input efficiency. The first backlight group 26 can also be used to display the touch area 20a by means of backlight, so that the user can clearly observe the touch area 20a, which is convenient for the user to accurately and quickly perform gesture touch operations in the touch area 20a, The possibility of input errors due to gesture touch operation performed in the non-touch area due to the inability to clearly identify the touch area 20 a is reduced.

The first backlight group 26 can display different colors. When the key-type touch keyboard 10 turns on the touch function, the first backlight group 26 is used to emit the first color, and when the button-type touch keyboard 10 turns on the input function, the first backlight group 26 is used to emit the second color, Wherein, the first color and the second color are different. For example, the first backlight group 26 is used to emit red light when the touch-touch keyboard 10 is enabled for touch function, and the first backlight group 26 is used for emitting white light when the touch-type keyboard 10 is enabled for input function. The first backlight group 26 can display different color changes to remind the user of the switching of the function of the push-button touch keyboard 10 and the position of the touch area 20a, thereby improving the accuracy and convenience of the user's touch input.

Exemplarily, a physical switch (not shown in the figure) may be set on the key-type touch keyboard 10 , so that the user can switch between the touch function and the input function through the physical switch. The physical switch can control the colors displayed by the first backlight group 26 . Alternatively, the touch sensing electrodes 21 can automatically recognize user gestures to determine whether the user is performing a touch operation. Or, for example, if the user inputs a gesture of making a checkmark in the touch area 20a, the touch sensing electrode 21 automatically recognizes the gesture, and automatically switches between the touch function and the input function. At this time, the key-type touch keyboard 10 can automatically control the first backlight group 26 to turn on and emit light.

In some examples, the first backlight group 26 includes a backlight 261 . At least some of the keys 30 are provided with backlights 261 under the key caps 32 . For example, a backlight 261 may be provided under the key cap 32 of the key 30 located at the edge of the touch area 20a. Alternatively, all the backlights 261 are provided under the key caps 32 of the keys 30 in the touch area 20a. The touch sensing electrodes 21 avoid the backlight 261 , thereby reducing the possibility of signal interference caused by the backlight 261 to the touch sensing electrodes 21 . A backlight 261 may be disposed in a gap between two adjacent electrode units 211 . The backlight 261 is disposed on the circuit board 24 . The backlight 261 may be an LED light.

In some examples, the backlights 261 under different keys 30 can also be controlled separately, so that the backlights 261 under different keys 30 can have different brightness or different light colors to meet individual needs.

Exemplarily, the first backlight group 26 may include a two-color backlight 261 , 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 backlights 261 may be provided under the keycap 32 . The color of light emitted by the backlight lamps 261 of the first group is different from that of the light emitted by the backlight lamps 261 of the second group. For example, in the touch function mode, the backlights 261 of the first group work and emit red light, while the backlights 261 of the second group are in an off state; while in the input function mode, the backlights 261 of the second group work and emit red light. White light is emitted, and the backlights 261 of the first group are in an off state.

In some embodiments, as shown in FIG. 8 , the circuit board assembly 20 further includes a second backlight group 27 . The second backlight group 27 is disposed in the non-touch area. The non-touch area refers to the area on the key-type touch keyboard 10 except the touch area 20a defined by the touch sensing electrodes 21 . The second backlight group 27 can be used to provide backlight for the keys 30 located in the non-touch area, so that in a dark environment, the user can also clearly observe the corresponding keys 30 in the non-touch area, reducing misoperation of the keys 30 The possibility is conducive to improving the input efficiency.

When the key-type touch keyboard 10 turns on the touch function, the first backlight group 26 in the touch area 20a and the second backlight group 27 in the non-touch area have different light colors, and the key-type touch keyboard 10 is turned on. When the function is input, the light emitting colors of the first backlight group 26 and the second backlight group 27 are the same. For example, when the touch function of the key-type touch keyboard 10 is turned on, the first backlight group 26 emits red light, and the second backlight group 27 emits white light. When the key-type touch keyboard 10 turns on the input function, both the first backlight group 26 and the second backlight group 27 emit white light. The first backlight group 26 and the second backlight group 27 distinguish the touch area 20a and the non-touch area by displaying backlights of different colors, so that the user can clearly observe the touch area 20a and the non-touch area, which is convenient for the user to accurately Moreover, the gesture touch operation is quickly performed in the touch area 20a, reducing the possibility of input errors caused by performing the gesture touch operation in the non-touch area due to the inability to accurately identify the touch area 20a.

The second backlight group 27 includes a backlight 261 . In the non-touch area, at least some of the keys 30 are provided with backlights 261 under the key caps 32 . For example, a backlight 261 may be provided under the keycap 32 of the key 30 located on the non-touch area and close to the touch area 20a. Alternatively, a backlight 261 is provided under the key caps 32 of all the keys 30 in the non-touch area. The backlight 261 is disposed on the circuit board 24 .

FIG. 10 schematically shows a partial structure of a key-type touch keyboard 10 according to an embodiment. Referring to FIG. 10 , the key-type touch keyboard 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 on one side of the touch sensing electrode 21 , that is, the wireless communication antenna 40 is located in the non-touch area of the key-type touch keyboard 10 . Compared with the stacking arrangement of the touch sensing electrodes 21 and the wireless communication antenna 40, the tile arrangement of the touch sensing electrodes 21 and the wireless communication antenna 40 reduces the overall thickness of the push-button touch keyboard 10, and is also beneficial to reduce the touch Control the possibility of signal interference between the sensing electrode 21 and the wireless communication antenna 40 .

Exemplarily, the wireless communication antenna 40 may include a Bluetooth (bluetooth, BT) antenna and/or a near field communication (near field communication, NFC) coil.

FIG. 11 schematically shows a partial cross-sectional structure of a key-type touch keyboard 10 according to an embodiment. Referring to FIG. 11 , the button 30 further includes an elastic member 33 . The elastic member 33 is disposed on a surface of the keycap 32 facing the circuit board assembly 20 . The elastic member 33 is located between the keycap 32 and the circuit board assembly 20 . The elastic member 33 is used to provide resilience to the keycap 32 . When the user presses the keycap 32 to move down, the keycap 32 compresses the elastic member 33 . When the user releases the keycap 32 , the elastic member 33 releases elastic potential energy to rebound and drive the keycap 32 to move upward. Exemplarily, the end of the elastic member 33 close to the circuit board assembly 20 is connected to the surface of the circuit board assembly 20 facing the keycap 32 . Exemplarily, the elastic member 33 is a flexible structure. The material of the elastic member 33 can be selected from silicone or rubber.

The circuit board assembly 20 includes a key sensing electrode 28 . The key 30 also includes a conductive layer 34 . The conductive layer 34 is disposed on a portion of the elastic member 33 close to the circuit board assembly 20 . The key sensing electrode 28 and the conductive layer 34 are separated by a predetermined distance, so that a capacitor is formed between the two. Moving up or down the elastic member 33 can change the capacitance of the capacitor. The key-type touch keyboard 10 receives the capacitance value change signal, so as to identify the position of the key 30 being tapped, so as to execute the corresponding input command. Exemplarily, 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 concave portion 331 . The conductive layer 34 is disposed on the bottom wall of the concave portion 331 . Since the conductive layer 34 is located in the recess 331, the elastic member 33 will protect the conductive layer 34, which is beneficial to improve the waterproof performance and dustproof performance of the key-type touch keyboard 10, so that water or conductive dust is not easily accessible. The conductive layer 34 reduces the possibility of interference caused by water or conductive dust to the capacitance between the conductive layer 34 and the key sensing electrode 28 .

Fig. 12 schematically shows 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. . The left-hand touch area and the right-hand touch area can perform touch functions independently. For example, users who are accustomed to using their left hand for touch can selectively turn on the left-hand touch area, while the right-hand touch area can be turned off. Users who use their right hand for touch can selectively turn on the right-hand touch area, while the left-hand touch area can be turned off. The touch sensing electrodes 21 can meet the needs of users with different usage habits and improve product satisfaction.

FIG. 13 schematically shows a top view structure of a key-type touch keyboard 10 according to an embodiment. FIG. 14 schematically shows the top view structure of the circuit board 24 and the touch sensing electrodes 21 according to an embodiment. FIG. 15 schematically shows the top view structure of the backlight module 29 of an embodiment. Referring to FIGS. 13 to 15 , the circuit board assembly 20 includes a circuit board 24 and a backlight module 29 . The backlight module 29 includes a light guide plate 291 . The light guide plate 291 is disposed on a side of the circuit board 24 facing the keycap 32 . The light guide plate 291 has the functions of light guiding and uniform light. The backlight module 29 can display a backlight through the light guide plate 291 to illuminate the keys 30 in corresponding areas. The backlight module 29 can be used to provide backlight for the keys 30, so that in a dark environment, the user can also clearly observe the corresponding keys 30, reducing the possibility of misoperation of the keys 30, which is conducive to improving input accuracy and input. efficiency. The touch sensing electrodes 21 are disposed on the surface of the circuit board 24 facing the light guide plate 291 . The connection hole 22 is disposed on the light guide plate 291 . The non-metal connecting piece 23 is connected with the light guide plate 291 .

In some examples, the material of the light guide plate 291 is an insulating material, such as polymethyl methacrylate (PMMA).

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

In some embodiments, the area of the circuit board 24 corresponding to the connection hole 22 is provided with the touch sensing electrode 21 . Since the connection holes 22 are arranged on the light guide plate 291, the touch sensing electrodes 21 on the circuit board 24 no longer need to avoid the connection holes 22, so that the overall shape of the touch sensing electrodes 21 on the circuit board 24 can be designed to be more regular, which is beneficial. It is beneficial to further improve the touch sensitivity of the touch sensing electrodes 21 .

In some embodiments, the backlight module 29 further includes a light emitting unit 292 . The light emitting unit 292 is used for incident light to the light guide plate 291 . The light emitting unit 292 can be disposed near the edge of the light guide plate 291 . After the light emitting unit 292 is turned on, the light enters the light guide plate 291 . The light passes through the light guide plate 291 and illuminates the area of the button 30 after being uniformly lighted. Since the light-emitting unit 292 can be arranged in the non-touch area, the touch-sensing electrode 21 does not need to avoid the light-emitting unit 292, so the touch-sensing electrode 21 can be designed into a regular shape, which is conducive to further improving the sensitivity of the touch-sensing electrode 21, and The touch sensing electrodes 21 are less disturbed by the light emitting unit 292 , which is also beneficial to improve the sensitivity of the touch sensing electrodes 21 . Exemplarily, the light emitting unit 292 may be an LED lamp.

In some embodiments, the backlight module 29 further includes a light blocking member 293 . The light blocking member 293 partitions the light guide plate 291 into a first area 291a and a second area 291b. The light blocking member 293 is an opaque structural member. The light blocking member 293 functions to prevent light mixing between the first region 291a and the second region 291b. The light blocking member 293 extends along the outer contour of the touch sensing electrode 21 . The touch area 20 a defined by the touch sensing electrodes 21 may correspond to the first area 291 a of the light guide plate 291 . The non-touch area of the key-type touch keyboard 10 may correspond to the second area 291 b of the light guide plate 291 . When the touch function of the key-type touch keyboard 10 is turned on, the first area 291 a and the second area 291 b emit light in different colors. When the input function of the key-type touch keyboard 10 is turned on, the first region 291 a and the second region 291 b emit light in the same color.

The first area 291a and the second area 291b of the light guide plate 291 distinguish the touch area 20a and the non-touch area by displaying backlights of different colors, so that the user can clearly observe the touch area 20a and the non-touch area, which is convenient for the user to accurately Moreover, the gesture touch operation is quickly performed in the touch area 20a, reducing the possibility of input errors caused by performing the gesture touch operation in a non-touch area because the touch area 20a cannot be recognized.

In some examples, the first region 291 a and the second region 291 b of the light guide plate 291 are respectively bonded and fixed to the light blocking member 293 . The light guide plate 291 and the light blocking member 293 can be bonded to the touch sensing electrodes 21 and/or the circuit board 24 .

In some examples, the light emitting unit 292 in the backlight module 29 for incident light to the first region 291a of the light guide plate 291 and the light emitting unit 292 in the backlight module 29 for incident light to the second region 291b of the light guide plate 291 are separately control. For example, when the key-type touch keyboard 10 turns on the touch function, the light-emitting unit 292 in the backlight module 29 for incident light on the first area 291a of the light guide plate 291 is controlled to emit red light, and the backlight module 29 is used for guiding light. The light emitting unit 292 into which light enters the second region 291b of the light plate 291 is controlled to emit white light. When the key-type touch keyboard 10 turns on the input function, the light-emitting unit 292 in the backlight module 29 for incident light on the first area 291a of the light guide plate 291 is controlled to emit white light, and the first area 291a of the backlight module 29 for the light guide plate 291 is controlled to emit white light. The light-emitting unit 292 where light is incident on the second region 291b is controlled to emit white light.

Fig. 16 schematically shows the cross-sectional structure along the B-B direction in Fig. 13 . Referring to FIG. 16 , the non-metallic connector 23 includes a first engaging portion 231 and a second engaging portion 232 . The first engaging portion 231 and the second engaging portion 232 are respectively located on the upper and lower sides of the light guide plate 291 . The second engaging portion 232 is located on a side of the light guide plate 291 facing away from the keycap 32 . At least part of the second engaging portion 232 abuts against a surface of the light guide plate 291 facing away from the keycap 32 . The second clamping portion 232 can improve the stability and reliability of the connection between the non-metallic connector 23 and the light guide plate 291 . Since the second engaging portion 232 abuts against the surface of the light guide plate 291 facing away from the keycap 32, the second engaging portion 232 acts as a restraining limit, so when the first engaging portion 231 receives the scissor foot assembly When the upward pulling force of 31 acts, the non-metallic connecting member 23 is not easy to come out from the connecting hole 22 and be separated from the light guide plate 291 .

In some examples, a gap is formed between the first engaging portion 231 and the light guide plate 291 , and the scissor foot assembly 31 includes a shaft portion 31a that is engaged in the gap. Alternatively, a slot may be provided on the first engaging portion 231 , and the scissor foot assembly 31 includes a shaft portion 31a that is engaged in the slot. Exemplarily, the first engaging portion 231 extends along the radial direction of the connecting hole 22 . The opening of the slot on the first engaging portion 231 is located on the surface of the first engaging portion 231 facing the light guide plate 291 .

Fig. 17 schematically shows the structure of a light-shielding sheet according to an embodiment. Referring to FIG. 16 and FIG. 17 , the backlight module 29 further includes a light-shielding film 295 . The material of the light-shielding sheet 295 can be plastic. The light shielding sheet 295 is located on a side of the light guide plate 291 close to the keycap 32 . The light-shielding sheet 295 is provided with a light-transmitting hole 295 a corresponding to the position of the button 30 . The orthographic area of the keycap 32 facing the light shielding sheet 295 is larger than the orthographic area of the light transmission hole 295a. The light emitted by the light guide plate 291 can only exit at the position of the light transmission hole 295a of the light-shielding sheet 295, so that the backlight of the key 30 is soft and uniform, and the light emitted by the light guide plate 291 is reduced directly from the gap between the keycap 32 and the keycap 32. Possibility of causing glare to the user due to projection. The shading sheet 295 can also block the part between the keycap 32 and the keycap 32 on the touch sensing electrode 21, so that the shading sheet 295 can protect the touch sensing electrode 21 from the outside of the key-type touch keyboard 10. It is not easy to observe the touch sensing electrodes 21 , and also reduces the possibility of scratching the touch sensing electrodes 21 by foreign objects and causing the breakage of the touch sensing electrodes 21 .

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

In the description of the embodiments of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a An indirect connection through an intermediary may be an internal communication between two elements or an interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application according to specific situations.

The devices or components referred to in the embodiments of the present application must have specific orientations, be constructed and operated in specific orientations, and therefore should not be construed as limiting the embodiments of the present application. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise specifically specified.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above drawings are used to distinguish similar objects, while It is not necessarily used to describe a particular order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein, for example, can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

The term "plurality" herein means two or more. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this paper generally indicates that the contextual objects are an "or" relationship; in the formula, the character "/" indicates that the contextual objects are a "division" relationship.

It can be understood that the various numbers involved in the embodiments of the present application are only for convenience of description, and are not used to limit the scope of the embodiments of the present application.

It can be understood that, in the embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in the implementation of this application. The implementation of the examples constitutes no limitation.

Claims (18)

1. A key-type touch keyboard (10), characterized in that it comprises:

   A circuit board assembly (20) and a plurality of buttons (30) arranged on the circuit board assembly (20);

   The circuit board assembly (20) includes touch sensing electrodes (21), connection holes (22) and non-metallic connectors (23), the touch sensing electrodes (21) define a touch area (20a), and At least some of the keys (30) in the plurality of keys (30) are located in the touch area (20a), and the non-metallic connecting piece (23) is connected to the connecting hole (22);

   The key (30) includes a scissor foot assembly (31) and a keycap (32), and the scissor foot assembly (31) is respectively connected in rotation with the keycap (32) and the non-metal connecting piece (23).
2. The key-type touch keyboard (10) according to claim 1, characterized in that, the non-metallic connector (23) includes a first clamping portion (231), and the first clamping portion (231) is located at The side of the circuit board assembly (20) facing the keycap (32), the scissor foot assembly (31) is rotatably engaged with the first engaging portion (231), and the first engaging portion (231) is rotatably engaged. The orthographic projection of the contact portion (231) on the circuit board assembly (20) and the orthographic projection of the touch sensing electrode (21) have overlapping areas.
3. The key-type touch keyboard (10) according to claim 2, characterized in that, the non-metallic connector (23) further includes a second clamping portion (232), and the second clamping portion (232) Located on the side of the circuit board assembly (20) facing away from the keycap (32), at least part of the second engaging portion (232) and the circuit board assembly (20) are facing away from the keycap One side surface of (32) abuts.
4. The key-type touch keyboard (10) according to claim 3, characterized in that, the circuit board assembly (20) includes a circuit board (24), the touch sensing electrode (21) and the connection hole ( 22) are all arranged on the circuit board (24), the first clamping part (231) and the second clamping part (232) are respectively located on the upper and lower sides of the circuit board (24), and the The touch sensing electrodes (21) are arranged avoiding the connecting holes (22).
5. The key-type touch keyboard (10) according to claim 4, characterized in that, the circuit board assembly (20) further comprises a first backlight group (26), and the first backlight group (26) is located at The touch area (20a) is located under the button (30).
6. The button-type touch keyboard (10) according to claim 5, characterized in that, when the button-type touch keyboard (10) turns on the touch function, the first backlight group (26) is used to emit the second One color, when the key-type touch keyboard (10) turns on the input function, the first backlight group (26) is used to emit a second color, wherein the first color is different from the second color.
7. The button type touch keyboard (10) according to claim 5 or 6, characterized in that, the first backlight group (26) includes a backlight (261), and the keycap of the button (30) The backlight (261) is arranged below (32), and the touch sensing electrode (21) avoids the backlight (261).
8. The key-type touch keyboard (10) according to any one of claims 5 to 7, wherein the circuit board assembly (20) further includes a second backlight group (27), and the second backlight The group (27) is set in the non-touch area, and when the button-type touch keyboard (10) turns on the touch function, the first backlight group (26) in the touch area (20a) and the The light emitting colors of the second backlight group (27) are different. When the key-type touch keyboard (10) turns on the input function, The glow is the same color.
9. The key-type touch keyboard (10) according to claim 2, characterized in that, the circuit board assembly (20) comprises a circuit board (24) and a backlight module (29), and the backlight module (29) It includes a light guide plate (291), the light guide plate (291) is arranged on the side of the circuit board (24) facing the keycap (32), and the touch sensing electrode (21) is arranged on the circuit board (24) facing the surface of the light guide plate (291), the connection hole (22) is arranged on the light guide plate (291);

   The non-metallic connector (23) further includes a second clamping portion (232), the first clamping portion (231) and the second clamping portion (232) are respectively located on the light guide plate (291) the upper and lower sides.
10. The key-type touch keyboard (10) according to claim 9, characterized in that, the touch sensing electrode (21) is provided on the circuit board (24) in an area corresponding to the connection hole (22) .
11. The key-type touch keyboard (10) according to claim 9 or 10, characterized in that, the backlight module (29) further comprises a light blocking member (293), and the light blocking member (293) divides the The light guide plate (291) is divided into a first area (291a) and a second area (291b), the touch area (20a) corresponds to the first area (291a), and the key-type touch keyboard (10) When the touch function is turned on, the light emitting colors of the first region (291a) and the second region (291b) are different, and when the button type touch keyboard (10) turns on the input function, the first region (291a ) is the same as the light emission color of the second region (291b).
12. The key-type touch keyboard (10) according to any one of claims 9 to 11, characterized in that, the backlight module (29) further includes a shading sheet (295), and the shading sheet (295) is located at the The light guide plate (291) is close to the side of the keycap (32), the light-shielding sheet (295) is provided with a light-transmitting hole (295a) corresponding to the position of the key (30), and the keycap (32) faces The orthographic projection area of the shading sheet (295) is larger than the orthographic projection area of the light transmission hole (295a).
13. The key-type touch keyboard (10) according to any one of claims 9 to 12, characterized in that, the backlight module (29) further includes a light emitting unit (292), and the light emitting unit (292) is used for Light is incident on the light guide plate (291).
14. The key-type touch keyboard (10) according to claim 4 or 9, characterized in that, the touch sensing electrodes (21) are arranged on the circuit board (24) by coating, electroplating, etching or printing processes superior.
15. The key-type touch keyboard (10) according to any one of claims 1 to 14, characterized in that, the key-type touch keyboard (10) further comprises a wireless communication antenna (40), and the wireless communication antenna ( 40) It is arranged on the circuit board assembly (20), and the wireless communication antenna (40) is located on one side of the touch sensing electrode (21).
16. The button type touch keyboard (10) according to any one of claims 1 to 15, characterized in that, the button (30) further includes an elastic member (33), and the elastic member (33) is arranged on the The keycap (32) faces the surface of the circuit board assembly (20), and the elastic member (33) is used to provide resilience to the keycap (32).
17. The button type touch keyboard (10) according to claim 16, characterized in that, the circuit board assembly (20) includes a button sensing electrode (28), and the button (30) further includes a conductive layer (34), The conductive layer (34) is arranged on the part of the elastic member (33) close to the circuit board assembly (20), and a capacitor is formed between the button sensing electrode (28) and the conductive layer (34), so The upward or downward movement of the elastic member (33) can change the capacitance value of the capacitor.
18. An electronic device, characterized by comprising: the key-type touch keyboard (10) according to any one of claims 1 to 17.

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