key

Abstract

The present application relates to a key, which comprises a key cap, a bottom plate, a light emitting element and a lifting mechanism. The bottom plate is arranged opposite to the key cap. The light emitting element is exposed from the bottom plate and located below the key cap. The lifting mechanism is arranged between the bottom plate and the key cap and movably connects the key cap and the bottom plate, so that the key cap can move up and down relative to the bottom plate. The light emitting element is located in the vertical projection range of the lifting mechanism. The lifting mechanism has a cap end, a bottom end and a light shielding wall. The cap end is connected with the key cap, the bottom end is connected with the bottom plate, and the light shielding wall extends from the cap end to the bottom plate and / or extends from the bottom end to the key cap to shield the light emitted by the light emitting element. The key has the advantages of controlling the halo performance around the key and avoiding visual discomfort of the user.

Description

Technical Field

[0001] This invention relates to a button, and more particularly to a button that includes a lifting mechanism with a light-shielding function. Background Technology

[0002] In today's usage habits of desktop computers, laptops, smartphones, and tablets, the keyboard is an indispensable input device for entering text, symbols, or numbers. Modern keyboard development, in addition to basic input functions, emphasizes visual appeal; for example, modern keys have an illuminated visual effect when in use. Generally, the illuminated design of keys involves placing light-emitting elements, such as LEDs, on the base plate, along with a circuit board electrically connected to these elements. The light emitted by the LEDs projects beyond the keycaps, achieving the effect of key illumination.

[0003] However, as the luminous power and brightness of light-emitting elements continue to improve, if excessively bright light leaks through the gap between the keycap and the base plate without being fully diffused, it will affect the halo effect around the key and may cause visual discomfort to the user. Summary of the Invention

[0004] This invention provides a button that can control the halo effect around the button and avoid visual discomfort for the user.

[0005] According to one aspect of the present invention, a button is provided, comprising:

[0006] keycap;

[0007] The base plate is positioned opposite the keycap.

[0008] The light-emitting element is exposed from the base plate and located below the keycap; and

[0009] A lifting mechanism is disposed between the base plate and the keycap and movably connects the keycap and the base plate, so that the keycap can move up and down relative to the base plate. The lifting mechanism has at least one cap end connected to the keycap, and the cap end extends toward the base plate to form a light-shielding barrier to block the light emitted by the light-emitting element.

[0010] According to another aspect of the present invention, another button is also provided, comprising:

[0011] keycap;

[0012] The base plate is positioned opposite the keycap.

[0013] The light-emitting element is exposed from the base plate and located below the keycap; and

[0014] A lifting mechanism is disposed between the base plate and the keycap and movably connects the keycap and the base plate, so that the keycap can move up and down relative to the base plate. The lifting mechanism has at least one bottom end and at least one light-shielding wall. The bottom end is connected to the base plate, wherein the light-shielding wall extends from the bottom end towards the keycap to block the light emitted by the light-emitting element.

[0015] As an optional technical solution, the base plate also includes at least one base plate rib, and the bottom side of the light-shielding barrier is recessed to form at least one groove. When the lifting mechanism is in the retracted state, the base plate rib is accommodated in the groove.

[0016] As an optional technical solution, a thin film circuit board is also included, which further includes at least one thin film rib. The bottom side of the light-shielding barrier is recessed to form at least one groove. When the lifting mechanism is in the retracted state, the thin film rib is accommodated in the groove.

[0017] As an optional technical solution, an opening is formed on the base plate, through which the light-emitting element is exposed.

[0018] As an optional technical solution, the light-emitting element may be inserted into the opening of the base plate, or the light-emitting element may be located below the opening.

[0019] As an optional technical solution, the light-emitting element is disposed on a circuit board, which is located below the base plate.

[0020] As an optional technical solution, the lifting mechanism includes a first support member and a second support member, with at least one cap end located on the first support member and / or the second support member.

[0021] As an optional technical solution, the first support member is disposed on the outside of the second support member.

[0022] As an optional technical solution, the first support member also includes two opposing side arms, which are respectively connected to the two ends of the cap end of the first support member, and the light-shielding barrier extends at least partially to the two side arms.

[0023] As an optional technical solution, the light-emitting element is located within the vertical projection range of the lifting mechanism.

[0024] As an optional technical solution, the lifting mechanism also has at least one cap end, which is connected to the keycap. The light-shielding barrier extends from the cap end to the base plate and from the bottom end to the keycap to block the light emitted by the light-emitting element.

[0025] As an optional technical solution, the keycap also includes a groove corresponding to the light-shielding barrier on the bottom end of the lifting mechanism. When the lifting mechanism is in the retracted state, the light-shielding barrier is housed in the groove of the keycap.

[0026] In summary, in the key of the present invention, by means of the light-shielding barrier of the lifting mechanism, the light emitted by the light-emitting element can be effectively blocked when the keycap is at its highest position and when the keycap moves closer to or away from the base plate. The light is refracted and diffused multiple times between the keycap and the base plate, thereby reducing the situation where high-brightness light passes directly through the gap between the keycap and the base plate too early. This achieves the effect of controlling the uniform halo effect caused by light leakage around the key and avoiding visual discomfort for the user.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the application of a button according to an embodiment of the present invention;

[0029] Figure 2 A schematic diagram showing the appearance of a button according to an embodiment of the present invention in a standing position;

[0030] Figure 3 for Figure 2 The diagram shows an exploded view of the button components.

[0031] Figure 4A for Figure 2 A top-view plan view;

[0032] Figure 4B For along Figure 4A A cross-sectional view of the A-A' section line in the diagram;

[0033] Figure 5 This is a schematic diagram of the appearance of a button in an embodiment of the present invention in its folded state;

[0034] Figure 6A for Figure 5 A top-view plan view;

[0035] Figure 6B For along Figure 6A A cross-sectional view of the B-B' section line in the diagram;

[0036] Figure 7 for Figure 2 A schematic diagram of the button from another perspective;

[0037] Figure 8 for Figure 5 A schematic diagram of the button from another perspective;

[0038] Figure 9 This is an exploded view of the key components according to an embodiment of the present invention;

[0039] Figure 10A A cross-sectional view of a button according to an embodiment of the present invention in a standing position; and

[0040] Figure 10B This is a cross-sectional schematic diagram of a button according to an embodiment of the present invention in its retracted state. Detailed Implementation

[0041] The key light-shielding design of this invention must consider several factors simultaneously. First, to ensure the characters on the keycaps receive optimal illumination and light transmission, and to ensure the effective use of the light-emitting elements, the light generated by the light-emitting elements must pass through the base plate as much as possible, entering the space between the keycap and the base plate for repeated refraction and uniform diffusion. Second, given the increasing light-emitting power and brightness each year, and the application of multiple light-emitting elements dedicated to a single key in e-sports, the light entering the space between the keycap and the base plate must be prevented from prematurely escaping through the gap. Therefore, the light-shielding element needs to be located between the keycap and the base plate. Furthermore, the relative distance between the keycap and the base plate changes constantly during key presses. When the keycap is at its lowest point, the exposed light-transmitting gap is small, and the light-emitting effect is blocked by the user's fingers when pressing the key; when the keycap is at its highest point, the exposed light-transmitting gap is the largest. Therefore, the light-shielding design must be tailored to the relative position of the element when the keycap is at its highest point. However, for precision mechanical keys that reciprocate, the long-term trend towards thinner designs has reduced key travel to less than 2 mm. This has also led to a high degree of integration of all components and structures between the keycap and the base plate. The light-shielding design must take into account the interference problem of the entire key reciprocating travel to ensure that the keys can operate normally.

[0042] Figure 1 This is a schematic diagram illustrating the application of a button according to an embodiment of the present invention. Figure 1 As shown, in one embodiment of the present invention, the key 100 can constitute a keyboard 200 for use on an electronic device 300, such as a laptop computer or a standalone keyboard, for inputting data to the electronic device 300. The keyboard 200 can be composed of a plurality of the aforementioned keys 100. Figure 2 This is a schematic diagram of the appearance of a button in an embodiment of the present invention when the user is standing. Figure 3 for Figure 2 The diagram shows an exploded view of the button components. Figure 4A for Figure 2 A top-view plan view. Figure 4B For along Figure 4A A cross-sectional diagram of section line A-A' in the diagram. Figure 5 This is a schematic diagram of the appearance of a button in an embodiment of the present invention in its folded state. Figure 6A for Figure 5 A top-view plan view. Figure 6B For along Figure 6A A cross-sectional diagram of the B-B' section line. (See diagram below.) Figures 2 to 6B As shown, each key 100 includes a keycap 110, a base plate 120, a light-emitting device 130, and a lifting mechanism 140. The light-emitting device 130 is attached to the base plate 120 and located below the keycap 110. The lifting mechanism 140 is disposed between the base plate 120 and the keycap 110, allowing the keycap 110 to move up and down relative to the base plate 120. The lifting mechanism 140 includes a first support member 141 and a second support member 142, which are pivotally connected to each other and movably connected to the keycap 110 and the base plate 120, thereby enabling the keycap 110 to move up and down relative to the base plate 120. The light-emitting element 131 is located within the vertical projection range of the lifting mechanism 140. For example, the first support member 141 and the second support member 142 are arranged around the light-emitting element 131 of the light-emitting device 130. The first cap end 1411 of the first support member 141 of the lifting mechanism 140 is connected to the keycap 110, and the second cap end 1421 of the second support member 142 is connected to the keycap. The second cap end 1421 extends toward the base plate 120 to form a light-shielding barrier 143 to block the light emitted by the light-emitting element 131.

[0043] The keycaps 110 described above can be letter keys, number keys, space keys, and enter keys, etc. This invention does not limit the type of keycap 110. Additionally, in this embodiment, the base plate 120 can be a rigid plate made of metal (e.g., iron, aluminum, or alloy) or plastic. The first support member 141 and the second support member 142 of the lifting mechanism 140 can be a scissor-leg structure that is pivotally connected to each other, or a non-intersecting butterfly structure (upright V) or bat structure (inverted V); regardless of the configuration, the first support member 141 and the second support member 142 of the lifting mechanism 140 together enclose a rectangular vertical projection area surrounding the position where the light-emitting element 131 protrudes from the base plate 120. Generally, the light-emitting element 131 and the exposed position of the base plate 120, as well as the lifting mechanism 140 and its vertical projection area, are all located below the keycaps 110. In addition, the aforementioned lifting mechanism 140 may also include an elastic element 144, which is disposed on the base plate 120 and located below the keycap 110. The first support member 141 and the second support member 142 are disposed around the light-emitting element 131. When the keycap 110 is pressed, it can reciprocate relative to the base plate 120 by means of the elastic force of the elastic element 144 and in conjunction with the first support member 141 and the second support member 142. In addition, the aforementioned button 100 also includes a membrane circuit board 150, which is disposed on the base plate 120. The membrane circuit board 150 may be single-layer or multi-layer and has a switching circuit. The switching circuit (not shown) is indirectly or directly triggered when the keycap 110 is pressed by an external force and approaches the base plate 120. After the trigger circuit switches, the elastic element 144 of the lifting mechanism 140 and the first support member 141 and the second support member 142 move away from the base plate 120 and return to the highest position. In one embodiment, the elastic element 144 and the membrane circuit board 150 are light-transmitting elements.

[0044] In this embodiment, when the lifting mechanism 140 is in its standing state (i.e., the keycap 110 is at its highest position, and the distance between the keycap 110 and the base plate 120 is at its maximum), the light emitted by the light-emitting element 131 is blocked by the light-shielding barrier 143 of the first support member 141 and the second support member 142 (see...). Figure 2 and Figure 4B Furthermore, during the process of the lifting mechanism 140 changing from its standing state to its retracted state or from its retracted state to its standing state (i.e., during the process of the keycap 110 moving downwards towards or away from the base plate 120), the light emitted by the light-emitting element 131 is also blocked by the light-shielding barrier 143 of the first support member 141 and the second support member 142 (see...). Figure 4B and Figure 6BAccordingly, through the light-shielding barrier 143 of the first support member 141 and the second support member 142, the light emitted by the light-emitting element 131 can be effectively blocked when the keycap 110 is in its highest position and when the keycap 110 moves closer to or away from the base plate 120. This prevents light from leaking through the gap between the first support member 141 and the second support member 142 when the lifting mechanism 140 is in its standing state, thereby reducing the amount of light leaking through the gap between the keycap 110 and the base plate 120. This achieves the effect of controlling the halo effect caused by light leakage around the key 100 and preventing visual discomfort for the user.

[0045] The first support member 141 and the second support member 142 described above may have different colors and / or degrees of light transmittance to achieve different halo effects. Similarly, to achieve different halo effects, the first support member 141 and the second support member 142 may also have different colors and / or degrees of light transmittance in different parts of themselves, that is, the first support member 141 and the second support member 142 may have two or more colors and / or degrees of light transmittance. The aforementioned colors and degrees of light transmittance can be achieved by the selection and combination of materials.

[0046] The first support member 141 has a first cap end 1411 and a first bottom end 1412, and the second support member 142 has a second cap end 1421 and a second bottom end 1422. The first cap end 1411 and the second cap end 1421 are connected to the keycap 110, and the first bottom end 1412 and the second bottom end 1422 are connected to the base plate 120. The first bottom end 1412 of the first support member 141 can be fixed to the base plate 120 via the first fixing element 121, and the second bottom end 1422 of the second support member 142 can be fixed to the base plate 120 via the second fixing element 122. In one embodiment, the first fixing element 121 and the second fixing element 122 can be, for example, hooks, and the hooks are integrally formed with the base plate 120, that is, the hooks are part of the base plate 120. The hooks can be formed on the base plate 120 by stamping, for example, but the present invention is not limited thereto. In addition, the first support member 141 also includes a first side arm 1413 and a second side arm 1414, and the second support member 142 also includes a third side arm 1423 and a fourth side arm 1424. The first cap end 1411 of the first support member 141 is connected to the first side arm 1413 and the second side arm 1414, and the second cap end 1421 of the second support member 142 is connected to the third side arm 1423 and the fourth side arm 1424. The first side arm 1413 and the second side arm 1414 of the first support member 141 are pivotally connected to the third side arm 1423 and the fourth side arm 1424 of the second support member 142. For example, the first side arm 1413 of the first support member 141 and the third side arm 1423 of the second support member 142 cross each other and are pivotally connected, and the second side arm 1414 of the first support member 141 and the fourth side arm 1424 of the second support member 142 cross each other and are pivotally connected.

[0047] Figure 7 for Figure 2 The button shown is illustrated from another perspective. Figure 8 for Figure 5 This is a schematic diagram showing the button from another perspective. In one embodiment, as shown... Figure 2 , Figure 5 , Figure 7 and Figure 8 As shown, the aforementioned light-shielding barrier 143 is simultaneously disposed on the first cap end 1411 of the first support member 141 and the second cap end 1421 of the second support member 142. However, in other embodiments, depending on the requirements of halo performance, the light-shielding barrier 143 may also be disposed only on the first cap end 1411 of the first support member 141, or only on the second cap end 1421 of the second support member 142.

[0048] In an embodiment where the light-shielding barrier 143 is simultaneously disposed on the first cap end 1411 of the first support member 141 and the second cap end 1421 of the second support member 142 ( Figure 2 , Figure 5 , Figure 7 and Figure 8 The light-shielding barrier 143 includes a first light-shielding barrier 1431 and a second light-shielding barrier 1432. The first light-shielding barrier 1431 is disposed on the first cap end 1411 of the first support member 141, and the second light-shielding barrier 1432 is disposed on the second cap end 1421 of the second support member 142. When the lifting mechanism 140 is in the standing state (i.e., the keycap 110 is in the highest position, and the distance between the keycap 110 and the base plate 120 is at its maximum), the light emitted by the light-emitting element 131 is blocked by the first light-shielding barrier 1431 and the second light-shielding barrier 1432 (see reference). Figure 4B Furthermore, during the process of the lifting mechanism 140 changing from its standing state to its retracted state or from its retracted state to its standing state (i.e., during the process of the keycap 110 moving downwards towards or away from the base plate 120), the light emitted by the light-emitting element 131 is also blocked by the first light-shielding barrier 1431 and the second light-shielding barrier 1432 (see...). Figure 4B and Figure 6B This achieves the effect of controlling the halo effect caused by light leakage around the control button 100 and avoiding visual discomfort for the user.

[0049] In one embodiment, such as Figure 2 and Figure 7 As shown, the aforementioned light-shielding barrier 143 can extend to the side arms of each support member. For example, the first light-shielding barrier 1431 extends from the first cap end 1411 of the first support member 141 to the first side arm 1413 and the second side arm 1414 of the first support member 141, and the second light-shielding barrier 1432 extends from the second cap end 1421 of the second support member 142 to the third side arm 1423 and the fourth side arm 1424 of the second support member 142. That is, the first light-shielding barrier 1431 is disposed on the first cap end 1411, the first side arm 1413 and the second side arm 1414 of the first support member 141, and the second light-shielding barrier 1432 is disposed on the second cap end 1421, the third side arm 1423 and the fourth side arm 1424 of the second support member 142, so as to achieve the desired halo effect.

[0050] In one embodiment, such as Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, the aforementioned base plate 120 also includes base plate ribs 123, with base plate through holes 125 adjacent to both sides of the base plate ribs 123, and recessed grooves 145 formed on the bottom side of the light-shielding wall 143. During the process of the lifting mechanism 140 changing from its standing state to its retracted state (i.e., as the keycap 110 moves downward toward the base plate 120), the base plate ribs 123 enter the grooves 145. When the lifting mechanism 140 is in the retracted state, the base plate ribs 123 are housed in the grooves 145, and the light-shielding wall 143 is located on both sides of the base plate ribs 123. For example, the base plate rib 123 includes a first base plate rib 1231 and a second base plate rib 1232, and the groove 145 includes a first groove 1451 and a second groove 1452. The first groove 1451 is recessed on the bottom side of the first light-shielding wall 1431, and the second groove 1452 is recessed on the bottom side of the second light-shielding wall 1432. During the process of the lifting mechanism 140 changing from the standing state of the lifting mechanism 140 to the retracted state of the lifting mechanism 140 (i.e., the keycap 110 moves downward towards the base plate 1231), During the process of lifting mechanism 140, the first bottom plate rib 1231 enters the first groove 1451, and the second bottom plate rib 1232 enters the second groove 1452. When the lifting mechanism 140 is in the retracted state, the first bottom plate rib 1231 is accommodated in the first groove 1451, the second bottom plate rib 1232 is accommodated in the second groove 1452, the first light-shielding wall 1431 is located on both sides of the first bottom plate rib 1231, and the second light-shielding wall 1432 is located on both sides of the second bottom plate rib 1232. The present invention does not limit the number of the first groove 1451, the second groove 1452, the first bottom plate rib 1231, and the second bottom plate rib 1232.

[0051] Figure 9 This is an exploded view of the button components according to an embodiment of the present invention. Please refer to... Figure 9 In another embodiment, the thin film circuit board 150 includes at least one thin film rib 151 corresponding to the aforementioned base plate rib 123. Thin film perforations 152 are adjacent to both sides of the thin film rib 151, and at least one groove 145 is recessed on the bottom side of the light-shielding wall 143. When the lifting mechanism 140 is in the retracted state, the thin film rib 151 and the base plate rib 123 are simultaneously accommodated in the groove 145 of the light-shielding wall 143, and the light-shielding wall 143 is accommodated in the thin film perforation 152 and the base plate perforation 125. In other embodiments, only the thin-film circuit board 150 has a thin-film rib 151 and an adjacent thin-film perforation 152, while the base plate 120 has no ribs and only a large, continuous base plate perforation 125. When the lifting mechanism 140 is in the retracted state, the thin-film rib 151 is accommodated in the groove 145 of the light-shielding barrier 143, and the light-shielding barrier 143 is accommodated in the thin-film perforation 152 and the base plate perforation 125.

[0052] In one embodiment, such as Figure 7 As shown, the second cap end 1421 of the second support member 142 has a rod-shaped structure 1425. The bottom of the keycap 110 may be provided with a corresponding clamping element (not shown) to clamp and fix it on the rod-shaped structure 1425. In order to set the rod-shaped structure 1425, a corresponding top through hole 1426 is formed on the second cap end 1421 and a corresponding bottom notch 1427 is formed on the second light-shielding barrier 1432. For example, the bottom notch 1427 is located on both sides of the second groove 1452 and is spaced apart from the second groove 1452, but the present invention is not limited thereto.

[0053] In one embodiment, such as Figure 3 , Figure 4A and Figure 6A As shown, in the two support members described above, one support member is disposed outside the other support member. For example, the first support member 141 is disposed outside the second support member 142, the first side arm 1413 and the second side arm 1414 of the first support member 141 are located outside the third side arm 1423 and the fourth side arm 1424 of the second support member 142, the first cap end 1411 of the first support member 141 is located outside the second bottom end 1422 of the second support member 142, and the first bottom end 1412 of the first support member 141 is located outside the second cap end 1421 of the second support member 142; however, in other embodiments, the second support member 142 may be disposed outside the first support member 141.

[0054] Furthermore, the aforementioned light-emitting device 130 includes a circuit board 132, which is attached below the base plate 120. A light-emitting element 131 is disposed on the circuit board 132. An opening 124 is formed on the base plate 120 corresponding to the position of the light-emitting element 131, through which the light-emitting element 131 is exposed. In different embodiments, the light-emitting element 131 may enter the opening 124 of the base plate 120 or be located below the opening 124. The circuit board 132 is arranged with wiring (not shown) to transmit power for the light-emitting element 131 to emit light. The positions of the opening 124 of the base plate 120 and the light-emitting element 131 may be at least partially located below the elastic element 144, allowing the light from the light-emitting element 131 to pass through the elastic element 144. Alternatively, the opening 124 of the base plate 120 and the light-emitting element 131 may not overlap with the elastic element 144 at all.

[0055] Figure 10A This is a cross-sectional schematic diagram of a button according to an embodiment of the present invention in a standing position. Figure 10B This is a cross-sectional schematic diagram of a button according to an embodiment of the present invention in its retracted state. Please refer to... Figure 10A , Figure 10BIn another embodiment, the lifting mechanism 140 further includes another light-shielding barrier 146 that can block the light from the light-emitting element 131. This other light-shielding barrier 146 is located on the bottom end of the connecting base plate 120 of the lifting mechanism 140 and extends toward the keycap 110. In one embodiment, the light-shielding barrier 146 may be located on the first bottom end 1412 of the first support member 141 and / or the second bottom end 1422 of the second support member 142 of the lifting mechanism 140. The keycap 110 also includes a receiving groove 111 corresponding to the light-shielding barrier 146. When the lifting mechanism 140 is in the retracted state, the light-shielding barrier 146 is received in the receiving groove 111 of the keycap 110. Since the light-shielding barrier 146 located at the bottom end (i.e., the first bottom end 1412 and / or the second bottom end 1422) is closer to the light-emitting element 131, it can block more of the high-brightness light from the light-emitting element 131.

[0056] In summary, in the key of this embodiment of the invention, by means of the light-shielding barrier of the above-mentioned lifting mechanism, the light emitted by the light-emitting element can be effectively blocked when the keycap is at its highest position and when the keycap moves closer to or away from the base plate, thereby reducing the light leakage from the gap between the keycap and the base plate, achieving the effect of controlling the halo effect caused by light leakage around the key and avoiding visual discomfort for the user.

[0057] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be included in the scope of the present invention.

Claims

1. A key, characterized in that include: keycap; A base plate, positioned opposite the keycap, has perforations. The light-emitting element is exposed from the base plate and located below the keycap; as well as A lifting mechanism is disposed between the base plate and the keycap and movably connects the keycap and the base plate, so that the keycap can move up and down relative to the base plate. The lifting mechanism has at least one cap end connected to the keycap, and the cap end extends toward the base plate to form a light-shielding barrier to block the light emitted by the light-emitting element. When the keycap is not pressed, the light-shielding barrier can block the light emitted by the light-emitting element; when the keycap is pressed, the light-shielding barrier is housed in the perforation of the base plate.

2. A button, characterized in that, include: keycap; The base plate is positioned opposite the keycap. The light-emitting element is exposed from the base plate and located below the keycap; as well as A lifting mechanism is disposed between the base plate and the keycap and movably connects the keycap and the base plate, so that the keycap can move up and down relative to the base plate. The lifting mechanism includes at least one bottom end and at least one light-shielding barrier. The bottom end is connected to the base plate, wherein the light-shielding barrier extends from the bottom end toward the keycap to block the light emitted by the light-emitting element. The bottom end has a side adjacent to the base plate and a side opposite to the base plate, and the light-shielding wall is located on the side of the bottom end opposite to the base plate; the keycap also includes a groove corresponding to the light-shielding wall on the bottom end of the lifting mechanism, and when the lifting mechanism is in the retracted state, the light-shielding wall is accommodated in the groove of the keycap.

3. The button according to claim 1 or 2, characterized in that, The base plate also includes at least one base plate rib, and the bottom side of the light-shielding barrier is recessed to form at least one groove. When the lifting mechanism is in the retracted state, the base plate rib is accommodated in the groove.

4. The button according to claim 1 or 2, characterized in that, It also includes a thin film circuit board, which further includes at least one thin film rib. The bottom side of the light-shielding barrier is recessed to form at least one groove, and when the lifting mechanism is in the retracted state, the thin film rib is accommodated in the groove.

5. The button according to claim 1 or 2, characterized in that, An opening is formed on the base plate, through which the light-emitting element is exposed.

6. The button according to claim 5, characterized in that, The light-emitting element enters the opening in the base plate, or the light-emitting element is located below the opening.

7. The button according to claim 1 or 2, characterized in that, The light-emitting element is disposed on a circuit board, which is located below the base plate.

8. The button according to claim 1 or 2, characterized in that, The lifting mechanism has at least one cap end connected to the keycap. The lifting mechanism includes a first support member and a second support member, and the at least one cap end is located on the first support member and / or the second support member.

9. The button according to claim 8, characterized in that, The first support member is disposed on the outside of the second support member.

10. The button according to claim 8, characterized in that, The first support also includes two opposing side arms, which are respectively connected to the two ends of the cap end of the first support, and the light-blocking barrier extends at least partially to the two side arms.

11. The button according to claim 1 or 2, characterized in that, The light-emitting element is located within the vertical projection range of the lifting mechanism.

12. The button according to claim 2, characterized in that, The lifting mechanism also has at least one cap end connected to the keycap, and the light-shielding barrier extends from the cap end to the base plate and from the bottom end to the keycap to block the light emitted by the light-emitting element.

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