Touch keycaps, keyboards, and keyboard touch input modules

Abstract

The present invention relates to the technical field of keyboards and discloses a touch keycap comprising a circuit board and a keycap body. The circuit board is provided on the keycap body and / or keyboard, a touch circuit is provided on the circuit board, and a capacitive sensing touch element is electrically connected to the touch circuit, which is one or more of a touch key, a touch slider, and a touch pad. The touch circuit is provided with an MCU, and the capacitive sensing touch element is electrically connected to the MCU. The capacitive sensing touch element is located on the inner, inner, or outer surface of the top wall of the keycap body, or the capacitive sensing touch element is located on the inner, inner, or outer surface of the side wall of the keycap body, or the capacitive sensing touch element is located on the ridge of the keycap body. A keyboard using this touch keycap can increase the number of keys under a given number of key positions, and has high interaction efficiency. The present invention also discloses a keyboard touch input module that can be used in combination with a keyboard or alone.

Description

Technical Field

[0001] The present invention relates to the technical field of keyboards, and particularly to touch key caps, keyboards, and keyboard touch input modules.

Background Art

[0002] Conventional keyboards, as inexpensive human-computer interaction devices commonly used worldwide, usually consist of a keyboard bottom case, a control circuit board, key switches, a switch positioning plate (upper cover), and key caps of the keys. Since the birth of the typewriter in the early 19th century, which formed the prototype of the keyboard, until now, the operating principle and connection method of the key switches inside the keyboard have evolved several times, from mechanical switches, capacitive detection switches to optical switches, and from wired AT interfaces, PS / 2 interfaces, USB interfaces to later wireless 2.4GHz, Bluetooth (registered trademark) connections. However, the interaction method between humans and keyboards has hardly changed, and mainly consists of the operation of pressing keys from top to bottom.

[0003] In recent years, some consumers have begun to adopt keyboard layouts other than the standard 108-key (100%) layout, such as 87-key (also known as the 80% layout, which removes the numeric keypad area), 68-key (also known as the 65% layout, which removes the function key area and slims down the navigation key area from the 80% layout, i.e., slims down the F1-F12 keys and removes any two of the Insert, Delete, Home, End, PageUp, and PageDown keys), and 61-key (also known as the 60% layout, which removes the function key area and navigation key area). Reducing the number of keys is a double-edged sword; while it improves space efficiency, it also increases learning costs, interaction costs (key combinations must be used to achieve the intended single-key operation), and purchase costs (the production volume of new layouts is far lower than that of 100% layouts, making economies of scale difficult to achieve during production, and the increased costs are passed on to consumers).

[0004] At the same time, keyboards with a single knob on the upper right corner began to become popular in the market. The knob offers unparalleled intuitiveness and step precision / speed compared to key operation for specific actions such as volume control, field of view adjustment, and screen zoom adjustment. However, keyboards with knobs also face similar issues of cost management and interaction efficiency (the user's hands need to be released from a "typing posture").

[0005] As described above, there is a need for a keyboard that can increase the number of usable keys while maintaining a predetermined number of keys and volume, and that does not require the user to change their hand position when typing with both hands. [Overview of the project] [Problems that the invention aims to solve]

[0006] The technical problem that this invention aims to solve is to provide an easy-to-operate touch keycap that can increase the number of usable keys while maintaining a predetermined number of keys and volume. [Means for solving the problem]

[0007] To achieve the above objective, the present invention provides a touch keycap comprising a circuit board and a keycap body, wherein the circuit board is provided on the keycap body and / or keyboard, a touch circuit is provided on the circuit board, a capacitive sensing touch member is electrically connected to the touch circuit, the capacitive sensing touch member is one or more of a touch key, a touch slider, and a touch pad, an MCU is provided on the touch circuit, the capacitive sensing touch member is electrically connected to the MCU, the capacitive sensing touch member is installed on any of the inner, inner, or outer surfaces of the top wall of the keycap body, or the capacitive sensing touch member is installed on any of the inner, inner, or outer surfaces of the side wall of the keycap body, or the capacitive sensing touch member is installed on the ridge of the keycap body.

[0008] In a preferred embodiment of the present invention, the circuit board includes a touch area and a mounting area, the capacitive sensing touch member is provided within the touch area, the touch circuit is provided within the mounting area, and the mounting area is installed on the keycap body and / or keyboard.

[0009] In a preferred embodiment of the present invention, the circuit board is a flexible circuit board, the flexible circuit board is provided on the keycap body, the touch area is fixed to the inner surface of the side wall of the keycap, and the mounting area is provided on the inner surface of the wall of the keycap body adjacent to the touch area.

[0010] Simultaneously, based on the above-mentioned touch keycaps, the present invention provides a keyboard comprising a control circuit board and the above-mentioned touch keycaps, wherein the touch keycaps are provided at the key positions of the keyboard and the touch circuits are electrically connected to the control circuit board.

[0011] In a preferred embodiment of the present invention, the touch keycap is provided at the key position on the outer edge of the keyboard, the side of the keycap body facing outward is the touch side, and the capacitive sensing touch member is installed on either the inner surface, the inside, or the outer surface of the wall on the touch side.

[0012] In a preferred embodiment of the present invention, a plurality of touch keycaps are installed, and the capacitive sensing touch members of the plurality of touch keycaps are each electrically connected to the same MCU, forming a group of touch keys.

[0013] In a preferred embodiment of the present invention, a plurality of touch key groups are provided, and each touch key group is provided with one MCU.

[0014] In a preferred embodiment of the present invention, the keyboard further includes an adapter, the adapter is provided with an input interface and an output interface, the control circuit board is electrically connected to the input interface, and the output interface is used for communication with a computer.

[0015] Simultaneously, the present invention further provides a keyboard touch input module comprising a circuit board and an adapter for communication connection to a keyboard control circuit board and / or a computer, wherein the circuit board is provided with a touch circuit, a capacitive sensing touch member is electrically connected to the touch circuit, the capacitive sensing touch member is one or more of a touch key, a touch slider, and a touch pad, and an MCU is provided with the touch circuit, the MCU is electrically connected to the capacitive sensing touch member and the adapter, respectively. [Effects of the Invention]

[0016] The touch keycap according to the present invention has the following beneficial effects compared to the prior art. When a finger touches the part of the keycap body corresponding to the position of the capacitive sensing touch member, the capacitive sensing touch member installed on the keycap body senses the finger contact, which triggers the capacitive sensing touch member to output a signal. This signal is transmitted to the MCU, processed by the MCU, and then a command signal is output, thus giving the touch keycap a touch output function. The present invention further provides a keyboard using this touch keycap, which allows for an increase in the number of usable keys based on a predetermined number of key positions, enables output of two or more key combinations with one finger, allows the use of the touch slider function while maintaining a "two-handed typing" state, is easy to operate, and increases interaction efficiency. The touch keycap is provided at the key position on the outer edge of the keyboard, and the side of the keycap body facing outward is the touch side. This ensures exposure of the outer wall of the touch side of the keycap body, allowing a person to perform a touch operation and trigger the touch output function of the touch keycap. The present invention further provides a keyboard touch module, which, when combined with the keycaps of a conventional keyboard, can add additional touch input functionality to the conventional keyboard, or can be used independently as an additional touch keyboard. [Brief explanation of the drawing]

[0017] [Figure 1] This is a diagram showing the configuration of the touch keycap of the present invention. [Figure 2] This is a diagram of the configuration from a different angle than Figure 1. [Figure 3] This is a diagram showing the configuration when a side groove is provided at the bottom of the keycap body of the present invention. [Figure 4] This is a diagram showing the configuration of a keyboard having touch keycaps according to the present invention. [Figure 5] This figure shows the connection relationship between the touch keycap and the control circuit board of the present invention. [Figure 6] This figure shows the connection relationship between the touch keycap and the adapter of the present invention. [Figure 7] This diagram shows the connection relationships of the keyboard touch input module of the present invention. [Modes for carrying out the invention]

[0018] The following describes specific embodiments of the present invention in more detail with reference to the drawings and examples. The following embodiments are for illustrative purposes only and do not limit the scope of the present invention.

[0019] In describing the present invention, it should be understood that the orientations or positional relationships indicated by terms such as “center,” “vertical,” “horizontal,” “up,” “down,” “front,” “back,” “left,” “right,” “perpendicular,” “horizontal,” “top,” “bottom,” “inside,” and “outside” used herein are based on the orientations or positional relationships shown in the drawings and are merely for the purpose of facilitating and simplifying the description of the present invention. They do not express or suggest that such devices or elements have a specific orientation or are configured or operated in a specific orientation, and therefore should not be understood as limiting the present invention. Furthermore, the terms “first,” “second,” and “third” are used for convenience of explanation and should not be understood as expressing or suggesting relative importance.

[0020] As shown in FIGS. 1 to 2, the touch key cap includes a circuit board and a key cap body 12. The circuit board is provided on the key cap body 12 and / or on the keyboard. That is, the circuit board is provided on the key cap body 12, on the keyboard, or on both the key cap body 12 and the keyboard (for example, the circuit board is divided into two electrically connected parts, one is provided on the key cap body 12 and the other is provided on the keyboard). A touch circuit is provided on the circuit board, and the touch circuit is electrically connected to the capacitive sensing touch member 111. The capacitive sensing touch member 111 is one or more of a touch key, a touch slider, and a touch pad. An MCU 112 is provided in the touch circuit, and the capacitive sensing touch member 111 is electrically connected to the MCU 112. One side surface of the key cap body 12 is the touch side 121. The capacitive sensing touch member 111 is installed on any of the inner surface, the inside, and the outer surface of the top wall body of the key cap body 12, or the capacitive sensing touch member 111 is installed on any of the inner surface, the inside, and the outer surface of the side wall body of the key cap body 12, or the capacitive sensing touch member 111 is installed on the ridge line portion of the key cap body 12. It should be noted that on the premise of ensuring that it can be normally triggered, it is possible to install two or more capacitive sensing touch members 111 at the same part of the key cap body 12.

[0021] The operating principle of this embodiment is as follows: When a finger approaches (touches) the capacitive sensing touch member 111, capacitive coupling occurs between the capacitive sensing touch member 111 and the finger. This causes a change in the capacitance of the capacitive sensing touch member 111, and by measuring this capacitance, the presence of finger contact can be determined. The capacitive sensing touch member 111 can reliably detect a valid finger touch even when it is more than 20 mm away from an insulating material (such as glass or plastic) cover. Based on the above principle, when a finger touches the part of the keycap body 12 corresponding to the position of the capacitive sensing touch member 111, the capacitive sensing touch member 111 installed on the keycap body 12 senses the finger contact, which triggers the capacitive sensing touch member 111 to emit a signal. This signal is transmitted to the MCU 112, and after processing by the MCU 112, a command signal is output. Therefore, in addition to its original keycap function, this touch keycap 1 also has an additional touch output function. Specifically, if the capacitive sensing touch member 111 is a touch key, when a finger touches the part of the keycap body 12 corresponding to the position of the capacitive sensing touch member 111 (top, side, or edge), this touch key can be triggered, meaning that the touch keycap 1 of this embodiment has the function of a touch key. Also, if the capacitive sensing touch member 111 is a touch slider, when a finger slides over the part of the keycap body 12 corresponding to the position of the capacitive sensing touch member 111, this touch slider can be triggered, meaning that the touch keycap 1 of this embodiment has the function of a touch slider. Furthermore, if the capacitive sensing touch member 111 is a touchpad, when a finger slides over the part of the keycap body 12 corresponding to the position of the capacitive sensing touch member 111, this touchpad can be triggered, meaning that the touch keycap 1 of this embodiment has the function of a touchpad.

[0022] When the capacitive sensing touch member 111 is installed on any of the inner surface (i.e., the inner side surface of the top wall body of the key cap body 12), the inside (i.e., the inside of the top wall body of the key cap body 12, for example, a top concave groove is provided inside the top wall body of the key cap body 12 and the capacitive sensing touch member 111 is fitted into the top concave groove), and the outer surface (i.e., the outer side surface of the top wall body of the key cap body 12) of the top wall body of the key cap body 12, when a finger touches the top of the key cap body 12, the capacitive sensing touch member 111 is triggered, thereby realizing the touch output function. In order to prevent interference in character output (the output when touching the key cap body 12 and the output when pressing the key cap body 12 interfere with each other), it is necessary to install a switch for controlling the start and stop of the touch function of the key cap body 12. Thereby, after turning off the touch function of the key cap body 12, it is possible to normally press the key cap body 12 to output characters, or the signal of the touch output may be blocked by software.

[0023] When the capacitive sensing touch member 111 is installed on any of the inner surface (inner side surface), the inside (i.e., the inside of the side wall body of the key cap body 12, for example, as shown in FIG. 3, a side concave groove 122 is provided inside or on the bottom surface of the side wall body of the key cap body 12 and the capacitive sensing touch member 111 is fitted into the side concave groove 122. In this case, in order to facilitate connection, it is necessary to provide a wiring through hole in the key cap body 12 that communicates with the inside of the key cap body 12 and the side concave groove 122 respectively), and the outer surface (outer side surface) of the wall body of the touch side 121 of the key cap body 12, or when the capacitive sensing touch member 111 is installed on the ridge line portion of the key cap body 12, when the user presses the key cap body 12 to output characters, the capacitive sensing touch member 111 is not triggered, and the touch function and the character output function do not interfere with each other.

[0024] As an example, the circuit board includes a touch area 113 and a mounting area 114, with a capacitive sensing touch element 111 provided within the touch area 113. That is, the touch area 113 is provided on the keycap body 12, the touch circuit is provided within the mounting area 114, and the mounting area 114 is installed on the keycap body 12 or the keyboard. The mounting area 114 may be installed at any position on the keycap body 12, or it may be installed on the keyboard's control circuit board 2 or functional daughterboard. In this case, the mounting area 114 and the touch area 113 do not necessarily have to be a single unit, and may be two separate parts, which may be connected by a circuit board, wires, slide rails, or a modified conductive key switch.

[0025] As an example, the circuit board is a flexible circuit board 11, which is provided on the keycap body 12, with a touch area 113 fixed to the inner surface of the side wall of the keycap, and the circuit board has a fold line, which divides the flexible circuit board 11 into a touch area 113 and a mounting area 114. A capacitive sensing touch member 111 is provided in the touch area 113, and a touch circuit is provided in the mounting area 114, the touch area 113 is fixed to the inner surface of the side wall of the keycap, and the mounting area 114 is provided on the inner surface of the wall of the keycap body 12 adjacent to the touch area 113, that is, the flexible circuit board 11 is fixed to the inner wall of the keycap body 12 after being bent. This makes it easier to fix the flexible circuit board 11 inside the keycap body 12, and when the keycap body 12 is pressed down, the flexible circuit board 11 is not compressed, and only the capacitive sensing touch member 111 is provided on the inner surface of the side wall of the keycap body 12, so that the touch sensing area of ​​the capacitive sensing touch member 111 matches the area of ​​the inner surface of the side wall of the keycap body 12, thereby ensuring that the capacitive sensing touch member 111 is accurately triggered. In other embodiments, the mounting area 114 may be installed on the same inner surface as the touch area 113 or on a different inner surface, or it may be installed overlapping the back surface of the touch area 113, or the mounting area 114 may be installed on the inner surface of the top wall of the keycap body 12.

[0026] Furthermore, based on the touch keycap 1 described above, the present invention further provides a keyboard including a control circuit board 2 and the touch keycap 1, wherein the touch keycap 1 is provided at the key position of the keyboard, the touch circuit is electrically connected to the control circuit board 2, and when this keyboard is connected to a computer 3, command signals transmitted from the MCU 112 are transmitted to the computer 3. In other words, since the touch keycap 1 described above is used as the keycap of this keyboard, this keyboard will have a touch output function.

[0027] As an example, as shown in Figures 4-6, the touch keycap 1 is provided at the outer edge key position of the keyboard, the side of the keycap body 12 facing outward is the touch side 121, and the capacitive sensing touch member 111 is installed on either the inner surface, the inside, or the outer surface of the wall of the touch side 121 of the keycap body 12, and the outer edge key position refers to a key position close to the outer edge of the keyboard. Taking a 108-key keyboard as an example, the key positions on the outer edge are the key positions shown in the dashed box in Figure 4. The side of the keycap body 12 facing outward, that is, the side of the keycap body 12 closer to the outer edge of the keyboard, is the touch side 121. As shown in Figure 4, the front side of the keycap body 12 located at the "space key" is the touch side 121. On the other hand, when a touch keycap 1 is attached to an outer edge key position located at the corner of the keyboard, this touch keycap 1 has two sides facing outward. As with the touch keycap 1 located at the "right Enter" key position on the keyboard, both the front and right sides of the keycap body 12 are touch sides 121. In this case, a capacitive sensing touch member 111 may be installed on one of the touch sides 121 (specifically, the inner surface, interior or exterior surface, or edge of the wall of the touch side 121), or both touch sides 121 may have capacitive sensing touch members 111. In this case, two capacitive sensing touch members 111 may be installed on the two touch sides 121, or one capacitive sensing touch member 111 may be installed on the two touch sides 121.

[0028] The operating principle of this embodiment is as follows: The touch keycap 1 is provided at the key position on the outer edge of the keyboard, and the side of the keycap body 12 facing outwards is the touch side 121. This ensures that the wall of the touch side 121 of the keycap body 12 is exposed, making it possible for a person to trigger the touch output function of the touch keycap 1 by performing a touch operation.

[0029] If the capacitive sensing touch element 111 is a touch key, the touch keycap 1 can not only output a character command for the key position it is located on, but can also output another character command when the capacitive sensing touch element 111 of the touch keycap body 12 is triggered. This character command can be programmed to adapt to the user's usage needs and habits. For example, if the output character command of the touch keycap 1 located at the key position of the "F4 key" is set to "Alt", when the user's finger touches this touch keycap 1 and triggers its capacitive sensing touch element 111, and at the same time presses this touch keycap 1 (for example, when the finger touches the wall of the touch side 121 of the keycap body 12, the frictional force pulls the keycap body 12 into a pressed state), it becomes possible to output the key combination "Alt + F4", meaning that the user can perform a key combination that originally required two fingers with just one finger. Generally, key combinations that would normally require n fingers to press simultaneously can be reduced to n / 2 (rounded up) by using Touch Keycap 1, doubling the interaction efficiency.

[0030] In a 61-key 60% layout keyboard, after attaching the touch keycap 1 of the present invention, 31 additional keys can be added, increasing the number of keys by more than 50%, and the feel of operation far surpasses that of 65% and 80% layout keyboards without the touch keycap 1. In a 108-key 100% layout keyboard, after attaching the touch keycap 1 of the present invention, 39 additional keys can be added, resulting in a significant 36% increase in the number of keys. The improvement effect of the 65% and 80% layouts is that they are positioned between the two, and the added keys can be used to complement the layout keys, or customized to be used as shortcut keys to launch applications or scripts (macros), to switch layouts, or to trigger combinations of frequently used keys, thereby significantly reducing the need for keyboard and mouse operations.

[0031] If the capacitive sensing touch element 111 is a touch slider, functions such as volume adjustment can be realized by triggering the touch slider, and the user does not need to break the "two-handed typing" hand posture when triggering the touch slider of the touch keycap 1. For example, if the touch keycap 1 with a touch slider function is installed at the position of the "space key", the touch slider can be triggered by only a slight movement of the thumb, and this continuity of posture not only significantly improves interaction efficiency but also helps maintain the user's concentration and the continuity of their thinking during work.

[0032] If the capacitive sensing touch element 111 is a touchpad, functions such as moving the mouse pointer can be realized by triggering the touchpad.

[0033] As an example, multiple touch keycaps 1 are installed, and the capacitive sensing touch elements 111 of each of the multiple touch keycaps 1 are electrically connected to the same MCU 112, forming a group of touch keys. This reduces the number of MCUs 112, thereby simplifying the circuit and lowering costs. Multiple groups of touch keys are installed, and each group of touch keys is provided with one MCU 112. Generally, 5 to 6 capacitive sensing touch elements 111 share one MCU 112, so to install more touch keycaps 1, it is necessary to install multiple MCUs 112.

[0034] Generally, during the manufacturing of a keyboard, the touch circuit of the touch keycap 1 can be electrically connected directly to the control circuit board 2 to enable the connection and installation of the touch keycap 1. As an example, the keyboard of the present invention further includes an adapter 21, which is provided with an input interface and an output interface. The input interface is electrically connected to the control circuit board 2, and the output interface is used for communication with a computer 3 (including wired and wireless communication connections). That is, the adapter 21 connects to the computer 3 after aligning the wiring of the control circuit board 2 with the wiring of the circuit board, making it easy to replace the touch keycap 1. Furthermore, by installing the adapter 21, it becomes easy to modify a conventional keyboard into a keyboard having the touch keycap 1 of the present invention.

[0035] As shown in Figure 7, the present invention further provides a keyboard touch input module comprising a circuit board and an adapter 21 for communication connection to a keyboard control circuit board 2 and / or a computer 3. The communication connection includes wired communication connections and wireless communication connections, the wireless communication connection being, for example, a Bluetooth® connection, a Wi-Fi connection, etc., and can be powered by an independent battery or by being connected to the keyboard's battery. A touch circuit is provided on the circuit board, and a capacitive sensing touch member 111 is electrically connected to the touch circuit, and an MCU 112 is provided on the touch circuit, and the MCU 112 is electrically connected to the capacitive sensing touch member 111 and the adapter 21, respectively.

[0036] When the adapter 21 of the above module communicates with the control circuit board 2 of a conventional keyboard, this module is used in combination with the conventional keyboard, thereby modifying the conventional keyboard and adding additional touch functionality to the keyboard's keycaps. When the adapter 21 of the above module communicates with the computer 3, this module can be used independently and is equivalent to an independent additional touch keyboard. The adapter 21 can also communicate with the control circuit board 2 of the keyboard and the computer 3, respectively.

[0037] The above are merely preferred embodiments of the present invention, and those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention. [Explanation of Symbols]

[0038] 1 Touch Keycap 11 Flexible circuit board 111 Capacitive Sensing Touch Member 112 MCU 113 Touch area 114 Mounting area 12 Keycaps 121 Touch side 122 Side groove 2 Control circuit board 21 Adapters 3 Computers

Claims

1. It is a touch keycap, A touch keycap comprising a circuit board and a keycap body, wherein the circuit board is provided on the keycap body and / or keyboard, a touch circuit is provided on the circuit board, a capacitive sensing touch member is electrically connected to the touch circuit, the capacitive sensing touch member is one or more of a touch key, a touch slider and a touch pad, an MCU is provided on the touch circuit, the capacitive sensing touch member is electrically connected to the MCU, and the capacitive sensing touch member is installed on either the inner surface, inside and outside of the side wall of the keycap body, or the capacitive sensing touch member is installed on the ridge of the keycap body, such that the side wall of the keycap body or the ridge of the keycap body becomes a trigger portion for triggering the capacitive sensing touch member.

2. The touch keycap according to claim 1, wherein the circuit board includes a touch area and a mounting area, the capacitive sensing touch member is provided in the touch area, the touch circuit is provided in the mounting area, and the mounting area is installed on the keycap body and / or keyboard.

3. The touch keycap according to claim 2, wherein the circuit board is a flexible circuit board, the flexible circuit board is provided on the keycap body, the touch area is fixed to the inner surface of the side wall of the keycap body, and the mounting area is provided on the inner surface of the wall of the keycap body adjacent to the touch area.

4. It's a keyboard, A keyboard comprising a control circuit board and a touch keycap according to any one of claims 1 to 3, wherein the touch keycap is provided at the key position of the keyboard and the touch circuit is electrically connected to the control circuit board.

5. The keyboard according to claim 4, wherein the touch keycap is provided at the key position on the outer edge of the keyboard, the side of the keycap body facing outward is the touch side, and the capacitive sensing touch member is installed on either the inner surface, the inside, or the outer surface of the wall on the touch side.

6. The keyboard according to claim 4, characterized in that a plurality of touch keycaps are installed, and the capacitive sensing touch members of the plurality of touch keycaps are each electrically connected to the same MCU to form a group of touch keys.

7. The keyboard according to claim 6, characterized in that a plurality of the aforementioned touch key groups are installed, and each of the aforementioned touch key groups is provided with one of the aforementioned MCUs.

8. The keyboard according to claim 6, further comprising an adapter, the adapter being provided with an input interface and an output interface, the control circuit board being electrically connected to the input interface, and the output interface being used for communication with a computer.

9. A keyboard touch input module, A keyboard touch input module comprising a circuit board, a control circuit board for the keyboard described in claim 4, and an adapter for communication connection to a computer, wherein the circuit board is provided with a touch circuit, a capacitive sensing touch member is electrically connected to the touch circuit, the capacitive sensing touch member is one or more of a touch key, a touch slider, and a touch pad, an MCU is provided in the touch circuit, and the MCU is electrically connected to the capacitive sensing touch member and the adapter, respectively.

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