Light-emitting induction key

Abstract

The invention discloses a light-emitting induction key which comprises a circuit board, an induction module, a first light source, a first light guide plate and a key cap. The sensing module is arranged on the circuit board. The first light source is arranged on the circuit board. The first light guide plate is arranged on the sensing module. The first light guide plate comprises a groove and a side wall surrounding the groove. The side wall is provided with a lead angle structure. A part of the sensing module is accommodated in the groove. The side wall surrounds the sensing module. The key cap is arranged on the first light guide plate. The key cap comprises a light-transmitting layer and a light-shielding layer. The light shielding layer is arranged on one side of the light transmitting layer. The shading layer is provided with a first hollow area. Light emitted by the first light source enters the first light guide plate from the lower portion of the side wall and is guided to the first hollowed-out area through the lead angle structure to be emitted. The first light guide plate is arranged on the sensing module, the side wall of the first light guide plate and the first light source form light conduction, and the light is guided to the first hollow area through the lead angle structure to be emitted, so that a user can accurately find the position of the light-emitting sensing key according to the light-emitting pattern.

Description

Technical Field

[0001] The present invention relates to an inductive key, and particularly to a luminous inductive key. Background Art

[0002] With the development of inductive technology, inductive keys can be integrated into various electronic devices, such as keyboards, mobile devices, etc. The keycaps of inductive keys generally only have printed diagrams. When used in an environment with insufficient light, it is not easy for users to find the position of the inductive key, causing inconvenience in use. In addition, if the inductive key is integrated into a keyboard with backlight, limited by the setting of the inductive module, usually the backlight can only overflow from around the keycap of the inductive key, and there is still no backlight passing through the keycap itself. If there are diagrams on the top surface of the keycap, they still need to be illuminated by ambient light. Therefore, the optical indication effect provided by this backlight structure is limited. Summary of the Invention

[0003] In view of the problems in the prior art, the present invention provides a luminous inductive key to solve the above problems.

[0004] Therefore, the technical problem to be solved by the present invention is to provide a luminous inductive key, which comprises:

[0005] A circuit board;

[0006] An inductive module, which is arranged on the circuit board;

[0007] A first light source, which is arranged on the circuit board;

[0008] A first light guide plate, which is arranged on the inductive module. The first light guide plate comprises a groove and side walls surrounding the groove. The side walls have a light guiding structure. A part of the inductive module is accommodated in the groove, and the side walls surround the inductive module; and

[0009] A keycap, which is arranged on the first light guide plate. The keycap comprises a light-transmitting layer and a light-shielding layer. The light-shielding layer is arranged on one side of the light-transmitting layer, and the light-shielding layer has a first hollow area;

[0010] Wherein, the light emitted by the first light source enters the first light guide plate from below the side walls, and is guided by the light guiding structure to emit light from the first hollow area.

[0011] As an optional technical solution, the light-shielding layer further has a second hollow area, which is located around the first hollow area. The light emitted by the first light source enters the first light guide plate from below the side walls, and is refracted by the light guiding structure to emit light from the second hollow area.

[0012] As an alternative technical solution, the light-shielding layer further has a second hollow area, which is located around the first hollow area. The light-emitting induction key further includes a second light guide plate, which is disposed below the keycap. The position of the second light guide plate corresponds to the position of the second hollow area. The light emitted by the first light source enters the second light guide plate from below the second light guide plate, and is guided by the second light guide plate to emit light from the second hollow area.

[0013] As an alternative technical solution, the light-shielding layer further has a second hollow area, which is located around the first hollow area. The light-emitting induction key further includes a second light source and a second light guide plate. The second light source is disposed on the circuit board, and the second light guide plate is disposed below the keycap. The position of the second light guide plate corresponds to the position of the second hollow area. The light emitted by the second light source enters the second light guide plate from below the second light guide plate, and is guided by the second light guide plate to emit light from the second hollow area.

[0014] As an alternative technical solution, the light-shielding layer further has a second hollow area, which is located around the first hollow area. The light-emitting induction key further includes a second light guide plate and a light-blocking member. The second light guide plate is disposed below the keycap. The position of the second light guide plate corresponds to the position of the second hollow area. The light-blocking member is disposed between the side wall of the first light guide plate and the second light guide plate.

[0015] As an alternative technical solution, the light-blocking member extends to the lower surface of the keycap; or,

[0016] The light-blocking member extends to the upper surface of the circuit board.

[0017] As an alternative technical solution, the vertical projection of the first hollow area does not overlap with the second light guide plate.

[0018] As an alternative technical solution, the vertical projection of the second hollow area does not overlap with the induction module.

[0019] As an alternative technical solution, the vertical projection of the second hollow area overlaps with the second light guide plate and the second light source.

[0020] As an alternative technical solution, the vertical projection of the first hollow area overlaps with the induction module.

[0021] As an alternative technical solution, the chamfer structure is an inclined plane; or,

[0022] The chamfer structure is an arc surface formed by at least one radian.

[0023] As an alternative technical solution, the first light guide plate further includes a microstructure, and the position of the microstructure corresponds to the position of the first hollow area.

[0024] The present invention also provides a light-emitting induction key, which comprises:

[0025] A circuit board;

[0026] An induction module, which is arranged on the circuit board;

[0027] A first light source, which is arranged on the circuit board;

[0028] A first light guide plate, which is arranged on the induction module. The first light guide plate comprises a groove and side walls surrounding the groove. The side walls have light guiding angle structures, and a part of the induction module is accommodated in the groove; and

[0029] A keycap, which is arranged on the first light guide plate. The keycap comprises a first hollow area;

[0030] Wherein, the light emitted by the first light source enters the first light guide plate from below the side walls and is guided by the light guiding angle structures to emit light from the first hollow area.

[0031] As an optional technical solution, the vertical projection of the first hollow area overlaps with the induction module.

[0032] As an optional technical solution, the induction module has four side edges, and the side walls of the first light guide plate extend along at least one of the four side edges of the induction module to approach the first light source.

[0033] As an optional technical solution, the light-emitting induction key further comprises a light-blocking member surrounding the other side edges of the induction module where the side walls do not extend.

[0034] The present invention also provides a light-emitting induction key, characterized in that the light-emitting induction key comprises:

[0035] A circuit board;

[0036] An induction module, which is arranged on the circuit board;

[0037] A first light source, which is arranged on the circuit board;

[0038] A first light guide plate, which is arranged on the induction module. The first light guide plate comprises a top, side walls and a light guiding angle structure. The light guiding angle structure is located between the top and the side walls. The side walls are connected to the top and extend to approach the circuit board to form a light conduction with the first light source; and

[0039] A keycap is disposed on the first light guide plate. The top of the first light guide plate is clamped between the keycap and the sensing module. The keycap includes a first hollow area, and the vertical projection of the first hollow area overlaps with the top of the first light guide plate and the sensing module, and the vertical projection of the first hollow area does not overlap with the first light source.

[0040] Wherein, the light emitted by the first light source enters the first light guide plate from below the side wall, and is guided by the guiding angle structure to emit light from the first hollow area.

[0041] As an optional technical solution, the vertical projection of the first hollow area does not overlap with the side wall of the first light guide plate.

[0042] In summary, in the present invention, the first light guide plate is disposed on the sensing module, and the side wall of the first light guide plate forms a light conduction with the first light source. The light emitted by the first light source can enter the first light guide plate from below the side wall, and is guided by the guiding angle structure to emit light from the first hollow area, thereby forming a light-emitting pattern corresponding to the first hollow area. Thus, the user can accurately find the position of the light-emitting sensing key according to the light-emitting pattern.

[0043] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention. Description of the Drawings

[0044] Figure 1 It is a top view schematic diagram of a light-emitting sensing key according to an embodiment of the present invention.

[0045] Figure 2 For Figure 1 The cross-sectional schematic diagram of the light-emitting sensing key in

[0046] Figure 3 It is a cross-sectional schematic diagram of a light-emitting sensing key according to another embodiment of the present invention.

[0047] Figure 4 It is a cross-sectional schematic diagram of a light-emitting sensing key according to another embodiment of the present invention.

[0048] Figure 5 It is a cross-sectional schematic diagram of a light-emitting sensing key according to another embodiment of the present invention.

[0049] Figure 6 It is a cross-sectional schematic diagram of a light-emitting sensing key according to another embodiment of the present invention. Detailed Embodiments

[0050] To further understand the purpose, structure, features and functions of the present invention, the following will be described in detail in conjunction with the embodiments.

[0051] Please refer to Figure 1 And Figure 2, Figure 1 A top view schematic diagram of a light-emitting induction button according to an embodiment of the present invention Figure 2 is Figure 1 a cross-sectional schematic diagram of the light-emitting induction button in Figure 2 . To clearly present the light path, the cross-section in

[0052] As Figure 1 and Figure 2 shown, the light-emitting induction button 1 includes a circuit board 10, a sensing module 12, a first light source 14, a first light guide plate 16, and a keycap 18. The circuit board 10 can be a printed circuit board (PCB) or other circuit board that can provide electrical connections, and the circuit board 10 can include a substrate and a sensing circuit on the substrate. The sensing module 12 and the first light source 14 are both disposed on the circuit board 10 to control the operation of the sensing module 12 and the first light source 14 via the circuit board 10. The sensing module 12 is electrically connected to the sensing circuit of the circuit board 10, generates a sensing signal according to the operation of the user, and outputs the sensing signal to the system end (for example, a computer) through the sensing circuit. In actual operation, the sensing module 12 can include an integrated circuit chip (IC die) and a package covering the integrated circuit chip. The sensing module 12 can include one or any combination of a fingerprint recognition module and any type of touch module. The first light source 14 can be a light emitting diode (LED) or other element that can emit light.

[0053] The first light guide plate 16 is disposed above the package of the sensing module 12. The first light guide plate 16 includes a groove 160 and side walls 162 surrounding the groove 160, so that the cross-section of the first light guide plate 16 is U-shaped. Therefore, in a three-dimensional perspective, the first light guide plate 16 is bowl-shaped. The side walls 162 have a chamfer structure 164. The first light guide plate 16 can be made by an injection molding process. A part of the sensing module 12 is received in the groove 160 of the first light guide plate 16, so that the side walls 162 of the first light guide plate 16 surround the sensing module 12. In this embodiment, the first light source 14 can be disposed below the side walls 162 of the first light guide plate 16. Further, the first light guide plate 16 can include a top 161, side walls 162, and a chamfer structure 164, where the chamfer structure 164 is located between the top 161 and the side walls 162. The side walls 162 are connected to the top 161 and extend close to the circuit board 10 to form a light conduction with the first light source 14, so that the light emitted by the first light source 14 enters the first light guide plate 16 from below the side walls 162. It should be noted that the number of the first light sources 14 can be determined according to actual applications and is not limited to the embodiment shown in the figure.

[0054] The keycap 18 is disposed on the first light guide plate 16, wherein the top 161 of the first light guide plate 16 is clamped between the keycap 18 and the sensing module 12, and the light guiding structure 164 of the first light guide plate 16 is adjacent to the keycap 18. The keycap 18 includes a light-transmitting layer 180 and a light-shielding layer 182, wherein the light-shielding layer 182 is disposed on one side of the light-transmitting layer 180. In this embodiment, the light-shielding layer 182 can be disposed on the side of the light-transmitting layer 180 facing the circuit board 10. In another embodiment, the light-shielding layer 182 can also be disposed on the other side of the light-transmitting layer 180 away from the circuit board 10. In other words, the light-shielding layer 182 can be disposed on one of the opposite sides of the light-transmitting layer 180, depending on the actual application. The light-transmitting layer 180 can be glass, polycarbonate (PC), or other light-transmitting plate members. The light-shielding layer 182 can be ink or other light-shielding materials, and is formed on the light-transmitting layer 180 by printing or other means.

[0055] The light-shielding layer 182 has a first hollow area 1820 and a second hollow area 1822, wherein the second hollow area 1822 is located around the first hollow area 1820. In this embodiment, the first hollow area 1820 can form a pattern corresponding to the sensing function of the sensing module 12. For example, when the sensing module 12 is a fingerprint recognition module, the first hollow area 1820 can be a fingerprint-shaped pattern. Therefore, when light emits from the first hollow area 1820, a glowing fingerprint pattern can be presented. In addition, in this embodiment, the second hollow area 1822 can be annular. Therefore, when light emits from the second hollow area 1822, an annular halo pattern can be presented. It should be noted that the patterns and shapes of the first hollow area 1820 and the second hollow area 1822 can be determined according to the actual application, and are not limited to the above embodiments. In this embodiment, the first light guide plate 16 can further include a microstructure 166, wherein the position of the microstructure 166 corresponds to the position of the first hollow area 1820. The microstructure 166 is located on the side adjacent to the sensing module 12, and is used to reflect light toward the first hollow area 1820.

[0056] In this embodiment, the vertical projection of the first hollow area 1820 overlaps with the top 161 of the first light guide plate 16 and the sensing module 12, and the vertical projection of the first hollow area 1820 does not overlap with the first light source 14. Therefore, the light emitted by the first light source 14 cannot directly emit from the first hollow area 1820.

[0057] As Figure 2As shown in the figure, the light emitted by the first light source 14 enters the first light guide plate 16 from below the side wall 162 of the first light guide plate 16, and is guided by the light guiding angle structure 164 to emit light from the first hollow area 1820 of the keycap 18. In this embodiment, the vertical projection of the first hollow area 1820 does not overlap with the side wall 162 of the first light guide plate 16. Therefore, after the light enters the first light guide plate 16 from below the side wall 162 of the first light guide plate 16, the light guiding angle structure 164 reflects the light toward the first hollow area 1820. Then, the light is reflected by the micro-structure 166 toward the first hollow area 1820, so that the light is emitted from the first hollow area 1820 to form a light-emitting pattern corresponding to the first hollow area 1820 (for example, a light-emitting fingerprint pattern). Thus, the user can accurately find the position of the light-emitting sensing key 1 according to the light-emitting pattern.

[0058] In addition, after the light emitted by the first light source 14 enters the first light guide plate 16 from below the side wall 162 of the first light guide plate 16, the light is refracted by the light guiding angle structure 164 to emit light from the second hollow area 1822 of the keycap 18, thereby forming a light-emitting effect corresponding to the second hollow area 1822 (for example, a light ring). Thus, a richer visual effect can be brought to the user.

[0059] In this embodiment, the light guiding angle structure 164 is an inclined surface. The present invention can adjust the light emission amounts of the first hollow area 1820 and the second hollow area 1822 by adjusting the inclination angle of the inclined surface.

[0060] Please refer to Figure 3 , Figure 3 which is a sectional view of the light-emitting sensing key 1 according to another embodiment of the present invention. For clearly presenting the light path, Figure 3 the cross-section in

[0061] is not shown with hatching lines. Figure 3 As shown in

[0062] the light guiding angle structure 164 can be a curved surface formed by at least one radian. In one embodiment, the light guiding angle structure 164 can be a circular arc surface formed by a single radian. In another embodiment, the light guiding angle structure 164 can be an irregular arc surface formed by multiple radians. The present invention can adjust the light emission amounts of the first hollow area 1820 and the second hollow area 1822 by adjusting the radian of the curved surface, so that the light emission amount of the first hollow area 1820 is greater than, equal to, or less than the light emission amount of the second hollow area 1822. Figure 4 , Figure 4 which is a sectional view of the light-emitting sensing key 1' according to another embodiment of the present invention. For clearly presenting the light path, Figure 4 the cross-section in

[0063] The main difference between the light-emitting induction key 1' and the above-mentioned light-emitting induction key 1 is that the light-emitting induction key 1' further includes a second light guide plate 20, as Figure 4 shown. In this embodiment, the second light guide plate 20 is disposed below the keycap 18, and the position of the second light guide plate 20 corresponds to the position of the second hollow area 1822. The shape of the second light guide plate 20 also corresponds to the shape of the second hollow area 1822. For example, if the second hollow area 1822 is annular, the second light guide plate 20 is also annular. The first light source 14 can be disposed below the side wall 162 of the first light guide plate 16 and below the second light guide plate 20, so that the light emitted by the first light source 14 enters the first light guide plate 16 from below the side wall 162 and enters the second light guide plate 20 from below the second light guide plate 20.

[0064] After the light emitted by the first light source 14 enters the first light guide plate 16 from below the side wall 162 of the first light guide plate 16, the light is guided by the light guiding structure 164 to exit from the first hollow area 1820 of the keycap 18, thereby forming a light-emitting pattern corresponding to the first hollow area 1820 (for example, a light-emitting fingerprint pattern). In addition, after the light emitted by the first light source 14 enters the second light guide plate 20 from below the second light guide plate 20, the light is guided by the second light guide plate 20 to exit from the second hollow area 1822, thereby forming a light-emitting effect corresponding to the second hollow area 1822 (for example, a light ring). By guiding the light to the second hollow area 1822 through the second light guide plate 20, the light output of the second hollow area 1822 can be made more concentrated to enhance the light-emitting effect of the second hollow area 1822.

[0065] In this embodiment, the vertical projection of the first hollow area 1820 does not overlap with the second light guide plate 20. Therefore, the second light guide plate 20 does not guide the light to the first hollow area 1820. In addition, the vertical projection of the second hollow area 1822 does not overlap with the sensing module 12, and the vertical projection of the second hollow area 1822 overlaps with the second light guide plate 20. Therefore, the second light guide plate 20 can guide the light to the second hollow area 1822.

[0066] Please refer to Figure 5 , Figure 5 which is a cross-sectional view of the light-emitting induction key 1'' according to another embodiment of the present invention. In order to clearly show the light path, Figure 5 the cross-section in

[0067] The main difference between the light-emitting induction key 1'' and the above-mentioned light-emitting induction key 1' is that the light-emitting induction key 1'' further includes a second light source 22, as Figure 5As shown. The second light source 22 and the first light source 14 are spaced apart on the circuit board 10. In this embodiment, the first light source 14 can be disposed below the side wall 162 of the first light guide plate 16, and the second light source 22 can be disposed below the second light guide plate 20, so that the light emitted by the first light source 14 enters the first light guide plate 16 from below the side wall 162, and the light emitted by the second light source 22 enters the second light guide plate 20 from below the second light guide plate 20. It should be noted that the number of the first light source 14 and the second light source 22 can be determined according to actual applications, and is not limited to the embodiments shown in the figures.

[0068] After the light emitted by the first light source 14 enters the first light guide plate 16 from below the side wall 162 of the first light guide plate 16, the light will be guided by the light guiding structure 164 to the first hollow area 1820 of the keycap 18 for light emission, thereby forming a light-emitting pattern corresponding to the first hollow area 1820 (for example, a light-emitting fingerprint pattern). In addition, after the light emitted by the second light source 22 enters the second light guide plate 20 from below the second light guide plate 20, the light will be guided by the second light guide plate 20 to the second hollow area 1822 for light emission, thereby forming a light-emitting effect corresponding to the second hollow area 1822 (for example, a light ring). Since the first light source 14 and the second light source 22 are two independent light sources, the first light source 14 and the second light source 22 can be independently controlled to separately or simultaneously cause the first hollow area 1820 and the second hollow area 1822 to emit light.

[0069] In this embodiment, the vertical projection of the second hollow area 1822 overlaps with the second light guide plate 20 and the second light source 22. Therefore, the second light guide plate 20 can guide the light emitted by the second light source 22 to the second hollow area 1822 for light emission.

[0070] As Figure 5 shown, the light-emitting sensing key 1" may further include a light-blocking member 24, wherein the light-blocking member 24 is disposed between the side wall 162 of the first light guide plate 16 and the second light guide plate 20. The light-blocking member 24 can be a light-absorbing element (for example, a black sponge, a black shield, etc.) or a light-reflecting element to prevent the light emitted by the first light source 14 and the second light source 22 from interfering with each other. The first light source 14 and the second light source 22 can emit light of the same color or different colors. When the first light source 14 and the second light source 22 emit light of different colors, the light-blocking member 24 can prevent color bleeding between different colors of light.

[0071] Please refer to Figure 6 , Figure 6 which is a cross-sectional view of the light-emitting sensing key 1" according to another embodiment of the present invention. For the sake of clearly presenting the light path, Figure 6 the cross-section in

[0072] is not shown with cross-hatching. Figure 6As shown, the light-blocking member 24 can extend to the lower surface of the keycap 18 or the upper surface of the circuit board 10 to enhance the effect of blocking light interference. It should be noted that the light-blocking member 24 can only extend to the lower surface of the keycap 18 or only to the upper surface of the circuit board 10, depending on the actual application.

[0073] In another embodiment, the sensing module 12 can have four sides, and the side wall 162 of the first light guide plate 16 extends along at least one of the four sides of the sensing module 12 to approach the first light source 14. At this time, the light-blocking member 24 can surround the other sides of the sensing module 12 where the side wall 162 does not extend to prevent light from leaking from the other sides of the sensing module 12.

[0074] In summary, in the present invention, the first light guide plate is disposed on the sensing module, and the side wall of the first light guide plate forms a light conduction with the first light source. The light emitted by the first light source can enter the first light guide plate from below the side wall and be guided by the guiding angle structure to exit from the first hollow area, thereby forming a light-emitting pattern corresponding to the first hollow area. Thus, the user can accurately find the position of the light-emitting sensing key according to the light-emitting pattern. In addition, in the present invention, the light can be guided by the first light guide plate or the second light guide plate to exit from the second hollow area, thereby forming a light-emitting effect corresponding to the second hollow area. Thus, a richer visual effect can be brought to the user.

[0075] Of course, the present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A light-sensing button, characterized in that, The light-emitting induction key includes: A circuit board; An induction module, which is arranged on the circuit board; A first light source, which is arranged on the circuit board; A first light guide plate, which is arranged on the induction module. The first light guide plate includes a groove and side walls surrounding the groove. The side walls have a light guide angle structure. A part of the induction module is accommodated in the groove, and the side walls surround the induction module; and A keycap, which is arranged on the first light guide plate. The keycap includes a light-transmitting layer and a light-shielding layer. The light-shielding layer is arranged on one side of the light-transmitting layer, and the light-shielding layer has a first hollow area; Wherein, the light emitted by the first light source enters the first light guide plate from below the side walls and is guided by the light guide angle structure to emit light from the first hollow area.

2. The light-emitting induction button according to claim 1, wherein The light-shielding layer further has a second hollow area, which is located around the first hollow area. The light emitted by the first light source enters the first light guide plate from below the side walls and is refracted by the light guide angle structure to emit light from the second hollow area.

3. The light-emitting induction button according to claim 1, characterized in that, The light-shielding layer further has a second hollow area, which is located around the first hollow area. The light-emitting induction key further includes a second light guide plate, which is arranged below the keycap. The position of the second light guide plate corresponds to the position of the second hollow area. The light emitted by the first light source enters the second light guide plate from below the second light guide plate and is guided by the second light guide plate to emit light from the second hollow area.

4. The light-emitting induction button according to claim 1, characterized in that, The light-shielding layer further has a second hollow area, which is located around the first hollow area. The light-emitting induction key further includes a second light source and a second light guide plate. The second light source is arranged on the circuit board. The second light guide plate is arranged below the keycap. The position of the second light guide plate corresponds to the position of the second hollow area. The light emitted by the second light source enters the second light guide plate from below the second light guide plate and is guided by the second light guide plate to emit light from the second hollow area.

5. The light-emitting induction button according to claim 1, wherein, The light-shielding layer further has a second hollow area, which is located around the first hollow area. The light-emitting induction key further includes a second light guide plate and a light-blocking member. The second light guide plate is arranged below the keycap. The position of the second light guide plate corresponds to the position of the second hollow area. The light-blocking member is arranged between the side walls of the first light guide plate and the second light guide plate.

6. The light-sensing button according to claim 5, wherein, The light-blocking member extends to the lower surface of the keycap; or, The light-blocking member extends to the upper surface of the circuit board.

7. The light-emitting induction button according to any one of claims 3 to 5, characterized in that, The vertical projection of the first hollow area does not overlap with the second light guide plate.

8. The light-emitting induction button according to any one of claims 2 to 5, wherein The vertical projection of the second hollow area does not overlap with the induction module.

9. The light-emitting induction button according to claim 4, wherein The vertical projection of the second hollow area overlaps with the second light guide plate and the second light source.

10. The light-emitting induction button according to claim 1, characterized in that, The vertical projection of the first hollow area overlaps with the induction module.

11. The light-emitting induction button according to claim 1, wherein The light guide angle structure is an inclined plane; or, The light guide angle structure is an arc surface composed of at least one radian.

12. The light-emitting induction button according to claim 1, wherein, The first light guide plate further includes a microstructure, and the position of the microstructure corresponds to the position of the first hollow area.

13. A light-emitting induction key, characterized in that, The light-emitting induction key includes: A circuit board; An induction module, which is arranged on the circuit board; A first light source, which is arranged on the circuit board; A first light guide plate is disposed on the sensing module. The first light guide plate includes a groove and sidewalls surrounding the groove. The sidewalls have a chamfered structure, and a part of the sensing module is received in the groove; and A keycap is disposed on the first light guide plate. The keycap includes a first hollow area; Wherein, the light emitted by the first light source enters the first light guide plate from below the sidewall and is guided by the chamfered structure to emit light from the first hollow area.

14. The light-emitting induction button according to claim 13, characterized in that, The vertical projection of the first hollow area overlaps with the sensing module.

15. The light-emitting induction button according to claim 13, characterized in that, The sensing module has four side edges, and the sidewall of the first light guide plate extends along at least one of the four side edges of the sensing module to approach the first light source.

16. The light-emitting induction button according to claim 15, characterized in that, The light-emitting sensing key further includes a light-blocking member surrounding the other side edges of the sensing module where the sidewall does not extend.

17. A light-sensing button, characterized in that, The light-emitting sensing key includes: A circuit board; A sensing module disposed on the circuit board; A first light source disposed on the circuit board; A first light guide plate disposed on the sensing module. The first light guide plate includes a top, sidewalls and a chamfered structure. The chamfered structure is located between the top and the sidewalls. The sidewalls are connected to the top and extend to approach the circuit board to form a light conduction with the first light source; and A keycap is disposed on the first light guide plate. The top of the first light guide plate is clamped between the keycap and the sensing module. The keycap includes a first hollow area. The vertical projection of the first hollow area overlaps with the top of the first light guide plate and the sensing module, and the vertical projection of the first hollow area does not overlap with the first light source; Wherein, the light emitted by the first light source enters the first light guide plate from below the sidewall and is guided by the chamfered structure to emit light from the first hollow area.

18. The light-emitting induction button according to claim 17, wherein, The vertical projection of the first hollow area does not overlap with the sidewall of the first light guide plate.

Images