Light-emitting key

Abstract

The present application discloses a light-emitting button, which comprises a bottom plate, a thin film switch layer, a key cap, a lifting mechanism, a backlight device and at least one elastic body. The bottom plate has at least one first broken hole. The thin film switch layer has at least one second broken hole. The thin film switch layer is arranged on the upper surface or the lower surface of the bottom plate so that each second broken hole is located above or below the corresponding first broken hole. The lifting mechanism is arranged between the bottom plate and the key cap. The lifting mechanism comprises at least one protruding structure. At least one elastic body is formed on the backlight device. The backlight device is arranged below the bottom plate so that each elastic body passes through the corresponding first broken hole and the corresponding second broken hole. When the key cap is in the pressing position, each protruding structure extends into the corresponding first broken hole and the corresponding second broken hole and compresses the corresponding elastic body. The present application uses the elastic body formed on the backlight device to help eliminate noise and improve the pressing touch feedback.

Description

TECHNICAL FIELD

[0001] The present invention relates to a light-emitting key, and particularly to a light-emitting key capable of improving the feedback of pressing touch and eliminating noise during operation. BACKGROUND

[0002] Keyboards have been common input peripheral devices on the market. In order to eliminate the noise generated during operation and improve the feedback of pressing touch, the key of the prior art includes a buffering structure formed by the thin film switch layer and the elastic dome sheet relative to the bottom plate to absorb the impact energy of the keycap, the lifting mechanism, the balance bar, etc. when the key is pressed, thereby eliminating the noise.

[0003] However, the structure of the key of the prior art for eliminating noise is quite complex. Moreover, when the key is designed as a thin type key, part of the structure of the lifting mechanism will extend into the broken hole of the bottom plate, so that some parts of the lifting mechanism will inevitably hit the bottom plate. Therefore, the thin film switch layer or the bottom plate of the thin type key cannot provide sufficient buffering space, and the structure of the key of the prior art for eliminating noise is difficult to implement on the thin type key. In addition, for the light-emitting key using the backlight device including the light guide plate, there is no technology using the backlight device to assist in eliminating noise. SUMMARY

[0004] Therefore, the technical problem to be solved by the present invention is to provide a light-emitting key using a backlight device to assist in eliminating noise and improving the feedback of pressing touch. The structure of the light-emitting key of the present invention for eliminating noise can be implemented on a thin type light-emitting key.

[0005] To achieve the above object, the present application provides a light-emitting button, which comprises a base plate, a thin film switch layer, a key cap, a lifting mechanism, a backlight device and at least one elastic body. The base plate has at least one first aperture; the thin film switch layer has at least one second aperture, each second aperture corresponding to one of the first apertures, the thin film switch layer being arranged on the upper surface of the base plate so that each second aperture is above its corresponding first aperture or being arranged on the lower surface of the base plate so that each second aperture is below its corresponding first aperture; the key cap is arranged above the base plate and can move vertically relative to the base plate; the lifting mechanism is arranged between the base plate and the key cap, the lifting mechanism limiting the movement of the key cap between an unpressed position and a pressed position, the lifting mechanism comprising at least one protruding structure, each protruding structure corresponding to one of the second apertures; and at least one elastic body is formed on the backlight device, each elastic body corresponding to one of the first apertures, wherein the backlight device is arranged below the base plate so that each elastic body is arranged in its corresponding first aperture and its corresponding second aperture, and wherein when the key cap is in the pressed position, each protruding structure extends into its corresponding first aperture and its corresponding second aperture and compresses its corresponding elastic body.

[0006] As an optional technical solution, the backlight device comprises a light guide plate, a reflective sheet and a light shielding film. The light guide plate has a front surface and a back surface; the reflective sheet is arranged on the back surface of the light guide plate; and the light shielding film has at least one third aperture, each elastic body corresponding to one of the third apertures, the at least one elastic body being formed on the front surface of the light guide plate, the light shielding film being arranged on the front surface of the light guide plate so that each elastic body passes through its corresponding third aperture.

[0007] As an optional technical solution, the backlight device comprises a light guide plate, a reflective sheet and a light shielding film. The light guide plate has a front surface and a back surface; the reflective sheet is arranged on the back surface of the light guide plate; and the light shielding film is arranged on the front surface of the light guide plate, wherein the at least one elastic body is formed on the light shielding film.

[0008] As an optional technical solution, the back surface of the light guide plate defines at least one non-light-guiding region, each non-light-guiding region corresponding to one of the elastic bodies and being below its corresponding elastic body, and the backlight device further comprises a plurality of light turning structures formed on the back surface of the light guide plate except the at least one non-light-guiding region, the plurality of light turning structures being used to guide the light rays directed to the plurality of light turning structures to the front surface of the light guide plate.

[0009] As an optional technical solution, the light shielding film sheet has a top surface and a bottom surface, the top surface of the light shielding film sheet defines at least one light shielding area, each light shielding area corresponds to one of the at least one elastic body and is located below the corresponding elastic body, the bottom surface of the light shielding film sheet defines at least one light reflecting area, each light reflecting area corresponds to one of the at least one elastic body and is located below the corresponding elastic body, and the backlight device further comprises at least one light shielding film and at least one light reflecting film, each light shielding film corresponds to one of the at least one light shielding area and is formed on the corresponding light shielding area, and each light reflecting film corresponds to one of the at least one light reflecting area and is formed on the corresponding light reflecting area.

[0010] As an optional technical solution, the backlight device comprises a light guide plate, a light reflecting sheet, and a light shielding film sheet. The light guide plate has a front surface and a back surface; the light reflecting sheet is arranged on the back surface of the light guide plate; the light shielding film sheet has at least one first protruding part protruding upward, each elastic body corresponds to one of the at least one first protruding part, the at least one elastic body is formed on the front surface of the light guide plate, and the light shielding film sheet is arranged on the front surface of the light guide plate so that each elastic body is fitted into the corresponding first protruding part.

[0011] As an optional technical solution, the backlight device comprises a light guide plate, a light reflecting sheet, and a light shielding film sheet. The light guide plate has a front surface and a back surface; the light reflecting sheet is arranged on the back surface of the light guide plate; the light shielding film sheet has at least one second protruding part protruding upward, the at least one second protruding part serves as the at least one elastic body, and the light shielding film sheet is arranged on the front surface of the light guide plate.

[0012] As an optional technical solution, the back surface of the light guide plate defines at least one non-light guiding area, each non-light guiding area corresponds to one of the at least one second protruding part and is located below the corresponding second protruding part, and the backlight device further comprises a plurality of light turning structures formed on the back surface of the light guide plate except for the at least one non-light guiding area, the plurality of light turning structures are used to guide light rays directed to the plurality of light turning structures to the front surface of the light guide plate.

[0013] As an optional technical solution, the backlight device comprises a light guide plate, a light reflecting sheet, and a light shielding film sheet. The light guide plate has a front surface and a back surface, the at least one elastic body is formed on the front surface of the light guide plate; the light reflecting sheet is arranged on the back surface of the light guide plate; and the light shielding film sheet is arranged on the front surface of the light guide plate and covers the at least one elastic body.

[0014] As an optional technical solution, the back surface of the light guide plate defines at least one non-light-guiding area, each non-light-guiding area corresponds to one of the at least one elastic body and is located below the corresponding elastic body, and the backlight device further comprises a plurality of light turning structures formed on the back surface of the light guide plate except the at least one non-light-guiding area, the plurality of light turning structures being used to guide the light rays directed to the plurality of light turning structures to the front surface of the light guide plate.

[0015] In addition, the application also proposes a light-emitting key, which comprises a bottom plate, a thin film switch layer, a key cap, a lifting mechanism, a backlight device, and at least one elastic body. The bottom plate has at least one first hole; the thin film switch layer is arranged on the upper surface or the lower surface of the bottom plate; the key cap is arranged above the bottom plate and can move vertically relative to the bottom plate; the lifting mechanism is arranged between the bottom plate and the key cap, which limits the movement of the key cap between the unpressed position and the pressed position, and the lifting mechanism comprises at least one protruding structure; at least one elastic body is formed on the backlight device, which corresponds to the at least one protruding structure, wherein when the key cap is in the pressed position, the at least one protruding structure passes through the bottom plate and the thin film switch layer and compresses the at least one elastic body on the backlight device.

[0016] Unlike the prior art, the light-emitting key according to the application does not form a buffer structure on the thin film switch layer relative to the bottom plate, but uses the elastic body formed on the backlight device to help eliminate noise and improve the pressing touch feedback.

[0017] The application will be described in detail below in conjunction with the drawings and specific embodiments, but not as a limitation on the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the appearance of the light-emitting key according to the preferred embodiment of the application.

[0019] Figure 2 It is an expanded view of the elements and components of the light-emitting key according to the preferred embodiment of the application.

[0020] Figure 3 It is a perspective view of the appearance of the light-emitting key according to the preferred embodiment of the application. Figure 2 It is a cross-sectional view of the light-emitting key along the A-A line after assembly and in the unpressed position.

[0021] Figure 4 It is a cross-sectional view of the light-emitting key along the A-A line after assembly and in the pressed position. Figure 2 It is a cross-sectional view of the light-emitting key along the A-A line after assembly and in the pressed position.

[0022] Figure 5 It is a partial cross-sectional view of a specific embodiment of the backlight device and the elastic body of the light-emitting key according to the application.

[0023] Figure 6 This is a partial cross-sectional view of another specific embodiment of the backlight device and elastomer of the luminous button according to the present invention.

[0024] Figure 7 This is a partial cross-sectional view of another specific embodiment of the backlight device and elastomer of the luminous button according to the present invention.

[0025] Figure 8 This is a partial cross-sectional view of another specific embodiment of the backlight device and elastomer of the luminous button according to the present invention.

[0026] Figure 9 This is a partial cross-sectional view of another specific embodiment of the backlight device and elastomer of the luminous button according to the present invention. Detailed Implementation

[0027] To provide a further understanding of the purpose, structure, features, and functions of the present invention, detailed descriptions are provided below with reference to specific embodiments.

[0028] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 These figures schematically depict a light-emitting button 1 according to a preferred embodiment of the present invention. Figure 1 The light-emitting button 1 according to a preferred embodiment of the present invention is illustrated in a three-dimensional perspective view. Figure 2 A preferred embodiment of the light-emitting button 1 according to the present invention is illustrated in the unfolded diagram of its components and parts. Figure 3 for Figure 2 A cross-sectional view of the central illuminated button 1 after assembly and in the unpressed position, along line AA. Figure 4 for Figure 2 A cross-sectional view of the central illuminated button 1 after assembly and in the pressed position, along line AA.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the light-emitting button 1 according to a preferred embodiment of the present invention includes a base plate 10, a membrane switch layer 11, a keycap 12, a lifting mechanism 13, a backlight device 14, and at least one elastomer 15.

[0030] The base plate 10 has at least one first perforation 104. The membrane switch layer 11 has at least one second perforation 112. Each second perforation 112 corresponds to one of the at least one first perforation 104. The membrane switch layer 11 is disposed on the upper surface 100 or lower surface 102 of the base plate 10, such that each second perforation 112 is located above or below its corresponding first perforation 104. Figure 2 ,Figure 3 and Figure 4 In the example shown, the membrane switch layer 11 is disposed on the upper surface 100 of the base plate 10.

[0031] The key cap 12 is disposed above the base plate 10 and is vertically movable relative to the base plate 10. The lifting mechanism 13 is disposed between the base plate 10 and the key cap 12. The lifting mechanism 13 restricts the key cap 12 to move between an unpressed position (as shown in Figure 3 ) and a pressed position (as shown in Figure 4 ). The lifting mechanism 13 comprises at least one protruding structure 136. Each protruding structure 136 corresponds to one of the at least one first break hole 104. In the example shown, Figure 2 , Figure 3 and Figure 4 The lifting mechanism 13 comprises a first connecting member 132 and a second connecting member 134 in the example shown, but the present application is not limited thereto. The light-emitting key 1 according to the present application can also have a butterfly lifting mechanism 13, a magnetic lifting mechanism 13, etc. It is emphasized that the light-emitting key 1 according to the present application is a thin light-emitting key 1 in the examples shown in Figure 3 and Figure 4 .

[0032] At least one elastic body 15 is formed on the backlight device 14. Each elastic body 15 corresponds to one of the at least one first break hole 104. The backlight device 14 is disposed below the base plate 10 such that each elastic body 15 is disposed within its corresponding first break hole 104 and its corresponding second break hole 112. In the example shown, Figure 2 two elastic bodies 15 are shown as representatives.

[0033] In a specific embodiment, the at least one elastic body 15 can be formed of ultraviolet hardening resin, water glue, silica gel, or other commercially available and high-molecular materials with high elastic coefficient.

[0034] As shown in Figure 4 , when the key cap 12 is in the pressed position, each protruding structure 136 extends into its corresponding first break hole 104 and its corresponding second break hole 112 and compresses the elastic body 15 disposed therein. In this way, the elastic body 15 can absorb the impact energy of the lifting mechanism 13 when the key cap 12 is pressed, thereby eliminating noise and improving the feedback of the pressing touch.

[0035] In one embodiment, the top view shape of the elastic body 15 can be circular, oval, rectangular, etc. In one example, the top view shape of the elastic body 15 is circular, the height of the elastic body 15 is 0.25 mm, and the diameter of the elastic body 15 is 2.00 mm.

[0036] In the present application, the light-emitting button 1 comprises a bottom plate 10, a thin-film switch layer 11, a key cap 12, a lifting mechanism 13, a backlight device 14, and at least one elastic body 15. The bottom plate 10 has at least one first break hole 104; the thin-film switch layer 11 is arranged on the upper surface or the lower surface of the bottom plate 10; the key cap 12 is arranged above the bottom plate 10 and can move vertically relative to the bottom plate 10; the lifting mechanism 13 is arranged between the bottom plate 10 and the key cap 12, and the lifting mechanism 13 limits the movement of the key cap 12 between the unpressed position and the pressed position. The lifting mechanism 13 comprises at least one protruding structure 136; at least one elastic body 15 is formed on the backlight device 14, and the at least one elastic body 15 corresponds to the at least one protruding structure 136. When the key cap 12 is in the pressed position, the at least one protruding structure 136 penetrates the bottom plate 10 and the thin-film switch layer 11 and compresses the at least one elastic body 15 on the backlight device 14.

[0037] Please refer to Figure 5 , Figure 5 FIG. 2 is a partial cross-sectional view of one embodiment of the backlight device 14 and the elastic body 15 of the light-emitting button 1 according to the present application.

[0038] As shown in Figure 5 , in one embodiment, the backlight device 14 comprises a light guide plate 140, a reflective sheet 142, and a light-blocking film 143. The light guide plate 140 has a front surface 1402 and a back surface 1404. The reflective sheet 142 is arranged on the back surface 1404 of the light guide plate 140. The light-blocking film 143 has at least one third break hole 1434. Each elastic body 15 corresponds to one of the at least one third break hole 1434. At least one elastic body 15 is formed on the front surface 1402 of the light guide plate 140. The light-blocking film 143 is arranged on the front surface 1402 of the light guide plate 140 so that each elastic body 15 penetrates the corresponding third break hole 1434.

[0039] In one embodiment, the light guide plate 140 can be made of acrylic, silicone, thermoplastic polyurethane (TPU), or other commercially available high-molecular materials with good light-guiding properties.

[0040] In one embodiment, the reflective sheet 142 can be formed of white polyester film, but the present application is not limited thereto.

[0041] In the above embodiments, the light rays corresponding to the areas of the at least one elastic body 15 on the light guide plate 140 are blocked by the at least one elastic body 15 and thus cannot be utilized. In order to reduce the light energy loss in these areas, as shown in Figure 5 , further, the back surface 1404 of the light guide plate 140 is defined with at least one non-light-guiding area 1406. Each non-light-guiding area 1406 corresponds to one of the at least one elastic body 15 and is located below the corresponding elastic body 15. The backlight device 14 further comprises a plurality of light turning structures 144. The plurality of light turning structures 144 are formed on the back surface 1404 of the light guide plate 140 except for the at least one non-light-guiding area 1406. The backlight device 14 further comprises a plurality of light emitting elements 146. In the example shown in Figure 2 , the plurality of light emitting elements 146 are disposed adjacent to the side surface of the light guide plate 140 (the light guide plate 140 is not shown in Figure 2 ). The light rays emitted by the plurality of light emitting elements 146 enter the light guide plate 140 from the side surface of the light guide plate 140, but the present application is not limited thereto. The plurality of light emitting elements 146 can be disposed in many different positions, which will not be described herein. The light rays emitted by the plurality of light emitting elements 146 enter the light guide plate 140. The plurality of light turning structures 144 are used to direct the light rays toward the front surface 1402 of the light guide plate 140. The plurality of light turning structures 144 can be formed by printing dot-like light-colored (e.g., white) ink on the back surface 1404 of the light guide plate 140, can be micro-lenses, or can be formed by coating the light guide plate 140. However, the plurality of light turning structures 144 can be formed by other processes.

[0042] Please refer to Figure 6 , Figure 6 for another partial cross-sectional view of the backlight device 14 and the elastic body 15 according to another embodiment of the present application.

[0043] As shown in Figure 6 , in another embodiment, the backlight device 14 comprises a light guide plate 140, a reflective sheet 142, and a light blocking film 143. The light guide plate 140 has a front surface 1402 and a back surface 1404. The reflective sheet 142 is disposed on the back surface 1404 of the light guide plate 140. The light blocking film 143 is disposed on the front surface 1402 of the light guide plate 140. The at least one elastic body 15 is formed on the light blocking film 143.

[0044] In the above embodiment, in order to reduce the light energy loss of the light guide plate 140, as shown in Figure 6As shown, further, the back surface 1404 of the light guide plate 140 is defined with at least one non-light guiding area 1406. Each of the non-light guiding areas 1406 corresponds to one of the elastic bodies 15 and is located below the corresponding elastic body 15. The backlight device 14 further comprises a plurality of light turning structures 144. The plurality of light turning structures 144 are formed on the back surface 1404 of the light guide plate 140 except for the at least one non-light guiding area 1406. Similarly, the light emitted by the plurality of light emitting elements 146 enters the light guide plate 140 and is guided by the light guide plate 140. The plurality of light turning structures 144 are used to direct the light entering the plurality of light turning structures 144 toward the front surface 1402 of the light guide plate 140.

[0045] In the above embodiment, in order to reduce the light guiding energy loss of the light guide plate 140, as shown, Figure 6 As shown, further, the light blocking film 143 has a top surface 1430 and a bottom surface 1432. The top surface 1430 of the light blocking film 143 is defined with at least one light blocking area 1436. Each of the light blocking areas 1436 corresponds to one of the elastic bodies 15 and is located below the corresponding elastic body 15. The bottom surface 1432 of the light blocking film 143 is defined with at least one light reflecting area 1437. Each of the light reflecting areas 1437 corresponds to one of the elastic bodies 15 and is located below the corresponding elastic body 15. The backlight device 14 further comprises at least one light blocking film 147 and at least one light reflecting film 148. Each of the light blocking films 147 corresponds to one of the light blocking areas 1436 and is formed on the corresponding light blocking area 1436. The at least one light blocking film 147 is used to block the light entering the at least one light blocking film 147. Each of the light reflecting films 148 corresponds to one of the light reflecting areas 1437 and is formed on the corresponding light reflecting area 1437. The at least one light reflecting film 148 is used to reflect the light entering the at least one light reflecting film 148. The at least one light blocking film 147 can be formed by coating black or dark ink, but the present application is not limited thereto. The at least one light reflecting film 148 can be formed by coating white or light ink, but the present application is not limited thereto.

[0046] Please refer to Figure 7 , Figure 7 FIG. 6 is a partial cross-sectional view of another embodiment of the backlight device 14 and the elastic body 15 of the light emitting key 1 according to the present application.

[0047] As shown, Figure 7As shown, in another specific embodiment, the backlight device 14 includes a light guide plate 140, a reflector 142, and a light-shielding film 143. The light guide plate 140 has a front side 1402 and a back side 1404. The reflector 142 is disposed on the back side 1404 of the light guide plate 140. The light-shielding film 143 has at least one upwardly projecting first protrusion 1438. Each elastomer 15 corresponds to one of the at least one first protrusion 1438. The light-shielding film 143 may be formed at least one first protrusion 1438 by a stamping process. At least one elastomer 15 is formed on the front side 1402 of the light guide plate 140. The light-shielding film 143 is disposed on the front side 1402 of the light guide plate 140 such that each elastomer 15 fits into its corresponding first protrusion 1438.

[0048] In the above specific embodiments, similarly, in order to reduce the light guide energy loss of the light guide plate 140, the following measures are taken: Figure 7 As shown, further, the back surface 1404 of the light guide plate 140 defines at least one non-light-guiding area 1406. Each non-light-guiding area 1406 corresponds to one of the at least one elastic body 15 and is located below its corresponding elastic body 15. The backlight device 14 also includes a plurality of light-directing structures 144. The plurality of light-directing structures 144 are formed on the back surface 1404 of the light guide plate 140, excluding the at least one non-light-guiding area 1406. Similarly, the light emitted by the plurality of light-emitting elements 146 enters the light guide plate 140 and is then guided by the light guide plate 140. The plurality of light-directing structures 144 are used to guide the light rays incident on the plurality of light-directing structures 144 to the front surface 1402 of the light guide plate 140.

[0049] Please see Figure 8 , Figure 8 This is a partial cross-sectional view of another specific embodiment of the backlight device 14 and elastomer 15 of the luminous button 1 according to the present invention.

[0050] like Figure 8 As shown, in another specific embodiment, the backlight device 14 includes a light guide plate 140, a reflector 142, and a light-shielding film 143. The light guide plate 140 has a front side 1402 and a back side 1404. The reflector 142 is disposed on the back side 1404 of the light guide plate 140. The light-shielding film 143 has at least one upwardly projecting second protrusion 1439. The at least one second protrusion 1439 serves as at least one elastic body 15. The light-shielding film 143 can be formed by a stamping process. The light-shielding film 143 is disposed on the front side 1402 of the light guide plate 140.

[0051] In the above specific embodiments, similarly, in order to reduce the light guide energy loss of the light guide plate 140, the following measures are taken: Figure 8As shown, further, the back surface 1404 of the light guide plate 140 defines at least one unguided light area 1406. Each unguided light area 1406 corresponds to one of the at least one second protrusion 1439 and is located below its corresponding second protrusion 1439. The backlight device 14 also includes a plurality of light-directing structures 144. The plurality of light-directing structures 144 are formed on the back surface 1404 of the light guide plate 140, excluding the at least one unguided light area 1406. Similarly, the light emitted by the plurality of light-emitting elements 146 enters the light guide plate 140 and is then guided by the light guide plate 140. The plurality of light-directing structures 144 are used to guide the light incident on the plurality of light-directing structures 144 to the front surface 1402 of the light guide plate 140.

[0052] Please see Figure 9 , Figure 9 This is a partial cross-sectional view of another specific embodiment of the backlight device 14 and elastomer 15 of the luminous button 1 according to the present invention.

[0053] like Figure 9 As shown, in another specific embodiment, the backlight device 14 includes a light guide plate 140, a reflector 142, and a light-shielding film 143. The light guide plate 140 has a front side 1402 and a back side 1404. At least one elastomer 15 is formed on the front side 1402 of the light guide plate 140. The reflector 142 is disposed on the back side 1404 of the light guide plate 140. The light-shielding film 143 is disposed on the front side 1402 of the light guide plate 140 and covers at least one elastomer 15.

[0054] In the above specific embodiments, similarly, in order to reduce the light guide energy loss of the light guide plate 140, the following measures are taken: Figure 9 As shown, further, the back surface 1404 of the light guide plate 140 defines at least one non-light-guiding area 1406. Each non-light-guiding area 1406 corresponds to one of the at least one elastic body 15 and is located below its corresponding elastic body 15. The backlight device 14 also includes a plurality of light-directing structures 144. The plurality of light-directing structures 144 are formed on the back surface 1404 of the light guide plate 140, excluding the at least one non-light-guiding area 1406. Similarly, the light emitted by the plurality of light-emitting elements 146 enters the light guide plate 140 and is then guided by the light guide plate 140. The plurality of light-directing structures 144 are used to guide the light incident on the plurality of light-directing structures 144 to the front surface 1402 of the light guide plate 140.

[0055] In one specific embodiment, such as Figure 2As shown, the membrane switch layer 11 includes a switch 114. The switch 114 is located below the keycap 12. The light-emitting key 1 according to the preferred embodiment of the present application further includes a resilient actuating element 16. The resilient actuating element 16 includes an actuating post (not shown in the figure). The resilient actuating element 16 is disposed between the keycap 12 and the membrane switch layer 11 and is located above the switch 114. When the keycap 12 is pressed and moved to a pressed position, the resilient actuating element 16 is deformed and actuates the switch 114 to be turned on by the actuating post. When the keycap 12 is released, the resilient actuating element 16 provides a restoring force required for the keycap 12 to return to an unpressed position and turns off the switch 114.

[0056] From the above detailed description of the present application, it is clear that the light-emitting key according to the present application does not form a cushioning structure in the membrane switch layer relative to the bottom plate, but uses the elastic body formed on the backlight device to assist in eliminating noise and improving the press touch feedback. The structure of the light-emitting key according to the present application for eliminating noise can be implemented on a thin light-emitting key.

[0057] From the above detailed description of the preferred embodiments, it is intended to more clearly describe the features and spirit of the present application, rather than to limit the scope of the present application to the preferred embodiments disclosed above. On the contrary, it is intended to cover various changes and equivalent arrangements within the scope of the patent application of the present application. Therefore, the scope of the patent application of the present application should be interpreted most broadly according to the above description, so as to cover all possible changes and equivalent arrangements.

Claims

1. A light-emitting button, characterized in that... Include: The base plate has at least one first perforation; A thin-film switch layer having at least one second perforation, each second perforation corresponding to one of the at least one first perforation, the thin-film switch layer being disposed on the upper surface of the base plate such that each second perforation is located above its corresponding first perforation, or the thin-film switch layer being disposed on the lower surface of the base plate such that each second perforation is located below its corresponding first perforation. The keycap is positioned above the base plate and can move vertically relative to the base plate. A lifting mechanism is disposed between the base plate and the keycap. The lifting mechanism restricts the keycap from moving between an unpressed position and a pressed position. The lifting mechanism includes at least one protruding structure, and each protruding structure corresponds to one of the at least one second hole. Backlight device; as well as At least one elastomer is formed on the backlight device, each elastomer corresponding to one of the at least one first perforation, wherein the backlight device is disposed below the base plate such that each elastomer is placed within its corresponding first perforation and its corresponding second perforation. When the keycap is in the pressing position, each protruding structure extends into its corresponding first hole and its corresponding second hole and compresses its corresponding elastic body. The backlight device includes a light guide plate and a light shielding film, and at least one elastomer is formed on the light shielding film, on the light guide plate, or between the light shielding film and the light guide plate.

2. A light-emitting button, characterized in that... Include: The base plate has at least one first perforation; A thin-film switch layer having at least one second perforation, each second perforation corresponding to one of the at least one first perforation, the thin-film switch layer being disposed on the upper surface of the base plate such that each second perforation is located above its corresponding first perforation, or the thin-film switch layer being disposed on the lower surface of the base plate such that each second perforation is located below its corresponding first perforation. The keycap is positioned above the base plate and can move vertically relative to the base plate. A lifting mechanism is disposed between the base plate and the keycap. The lifting mechanism restricts the keycap from moving between an unpressed position and a pressed position. The lifting mechanism includes at least one protruding structure, and each protruding structure corresponds to one of the at least one second hole. Backlight device; as well as At least one elastomer is formed on the backlight device, each elastomer corresponding to one of the at least one first perforation, wherein the backlight device is disposed below the base plate such that each elastomer is placed within its corresponding first perforation and its corresponding second perforation. When the keycap is in the pressing position, each protruding structure extends into its corresponding first hole and its corresponding second hole and compresses its corresponding elastic body. The backlight device includes: The light guide plate has a front and a back. A reflector is disposed on the back side of the light guide plate; and A light-shielding film having at least one third perforation, each elastomer corresponding to one of the at least one third perforation, the at least one elastomer being formed on the front side of the light guide plate, the light-shielding film being disposed on the front side of the light guide plate such that each elastomer passes through its corresponding third perforation.

3. A light-emitting button, characterized in that... Include: The base plate has at least one first perforation; A thin-film switch layer having at least one second perforation, each second perforation corresponding to one of the at least one first perforation, the thin-film switch layer being disposed on the upper surface of the base plate such that each second perforation is located above its corresponding first perforation, or the thin-film switch layer being disposed on the lower surface of the base plate such that each second perforation is located below its corresponding first perforation. The keycap is positioned above the base plate and can move vertically relative to the base plate. A lifting mechanism is disposed between the base plate and the keycap. The lifting mechanism restricts the keycap from moving between an unpressed position and a pressed position. The lifting mechanism includes at least one protruding structure, and each protruding structure corresponds to one of the at least one second hole. Backlight device; as well as At least one elastomer is formed on the backlight device, each elastomer corresponding to one of the at least one first perforation, wherein the backlight device is disposed below the base plate such that each elastomer is placed within its corresponding first perforation and its corresponding second perforation. When the keycap is in the pressing position, each protruding structure extends into its corresponding first hole and its corresponding second hole and compresses its corresponding elastic body. The backlight device includes: The light guide plate has a front and a back. A reflector is disposed on the back side of the light guide plate; and A light-shielding film is disposed on the front side of the light guide plate, wherein at least one elastomer is formed on the light-shielding film.

4. The luminous button according to claim 3, characterized in that, The back side of the light guide plate defines at least one non-light-guiding area, each non-light-guiding area corresponding to one of the at least one elastic bodies and located below its corresponding elastic body. The backlight device also includes a plurality of light-directing structures formed on the back side of the light guide plate in areas other than the at least one non-light-guiding area. The plurality of light-directing structures are used to guide light rays incident on the plurality of light-directing structures to the front side of the light guide plate.

5. The luminous button according to claim 4, characterized in that, The light-shielding film has a top surface and a bottom surface. The top surface of the light-shielding film defines at least one light-shielding area, each light-shielding area corresponding to one of the at least one elastomers and located below its corresponding elastomer. The bottom surface of the light-shielding film defines at least one reflective area, each reflective area corresponding to one of the at least one elastomers and located below its corresponding elastomer. The backlight device also includes at least one light-shielding film and at least one reflective film. Each light-shielding film corresponds to one of the at least one light-shielding areas and is formed on its corresponding light-shielding area. Each reflective film corresponds to one of the at least one reflective areas and is formed on its corresponding reflective area.

6. A light-emitting button, characterized in that... Include: The base plate has at least one first perforation; A thin-film switch layer having at least one second perforation, each second perforation corresponding to one of the at least one first perforation, the thin-film switch layer being disposed on the upper surface of the base plate such that each second perforation is located above its corresponding first perforation, or the thin-film switch layer being disposed on the lower surface of the base plate such that each second perforation is located below its corresponding first perforation. The keycap is positioned above the base plate and can move vertically relative to the base plate. A lifting mechanism is disposed between the base plate and the keycap. The lifting mechanism restricts the keycap from moving between an unpressed position and a pressed position. The lifting mechanism includes at least one protruding structure, and each protruding structure corresponds to one of the at least one second hole. Backlight device; as well as At least one elastomer is formed on the backlight device, each elastomer corresponding to one of the at least one first perforation, wherein the backlight device is disposed below the base plate such that each elastomer is placed within its corresponding first perforation and its corresponding second perforation. When the keycap is in the pressing position, each protruding structure extends into its corresponding first hole and its corresponding second hole and compresses its corresponding elastic body. The backlight device includes: The light guide plate has a front and a back. A reflector is mounted on the back side of the light guide plate; as well as A light-shielding film has at least one upwardly projecting first protrusion, each elastomer corresponding to one of the first protrusions, the at least one elastomer being formed on the front surface of the light guide plate, the light-shielding film being disposed on the front surface of the light guide plate such that each elastomer fits into its corresponding first protrusion.

7. A light-emitting button, characterized in that... Include: The base plate has at least one first perforation; A thin-film switch layer having at least one second perforation, each second perforation corresponding to one of the at least one first perforation, the thin-film switch layer being disposed on the upper surface of the base plate such that each second perforation is located above its corresponding first perforation, or the thin-film switch layer being disposed on the lower surface of the base plate such that each second perforation is located below its corresponding first perforation. The keycap is positioned above the base plate and can move vertically relative to the base plate. A lifting mechanism is disposed between the base plate and the keycap. The lifting mechanism restricts the keycap from moving between an unpressed position and a pressed position. The lifting mechanism includes at least one protruding structure, and each protruding structure corresponds to one of the at least one second hole. Backlight device; as well as At least one elastomer is formed on the backlight device, each elastomer corresponding to one of the at least one first perforation, wherein the backlight device is disposed below the base plate such that each elastomer is placed within its corresponding first perforation and its corresponding second perforation. When the keycap is in the pressing position, each protruding structure extends into its corresponding first hole and its corresponding second hole and compresses its corresponding elastic body. The backlight device includes: The light guide plate has a front and a back. A reflector is mounted on the back side of the light guide plate; as well as A light-shielding film having at least one second protrusion protruding upward, the at least one second protrusion serving as the at least one elastic body, the light-shielding film being disposed on the front side of the light guide plate.

8. The luminous button according to claim 7, characterized in that, The back side of the light guide plate defines at least one non-light guiding area, each non-light guiding area corresponding to one of the at least one second protrusion and located below its corresponding second protrusion. The backlight device also includes a plurality of light deflection structures formed on the back side of the light guide plate in areas other than the at least one non-light guiding area. The plurality of light deflection structures are used to guide light rays incident on the plurality of light deflection structures to the front side of the light guide plate.

9. A light-emitting button, characterized in that... Include: The base plate has at least one first perforation; A thin-film switch layer having at least one second perforation, each second perforation corresponding to one of the at least one first perforation, the thin-film switch layer being disposed on the upper surface of the base plate such that each second perforation is located above its corresponding first perforation, or the thin-film switch layer being disposed on the lower surface of the base plate such that each second perforation is located below its corresponding first perforation. The keycap is positioned above the base plate and can move vertically relative to the base plate. A lifting mechanism is disposed between the base plate and the keycap. The lifting mechanism restricts the keycap from moving between an unpressed position and a pressed position. The lifting mechanism includes at least one protruding structure, and each protruding structure corresponds to one of the at least one second hole. Backlight device; as well as At least one elastomer is formed on the backlight device, each elastomer corresponding to one of the at least one first perforation, wherein the backlight device is disposed below the base plate such that each elastomer is placed within its corresponding first perforation and its corresponding second perforation. When the keycap is in the pressing position, each protruding structure extends into its corresponding first hole and its corresponding second hole and compresses its corresponding elastic body. The backlight device includes: A light guide plate having a front side and a back side, wherein at least one elastomer is formed on the front side of the light guide plate; A reflector is mounted on the back side of the light guide plate; as well as A light-shielding film is disposed on the front side of the light guide plate and covers the at least one elastomer.

10. The luminous button according to claim 2, 6, or 9, characterized in that, The back side of the light guide plate defines at least one non-light-guiding area, each non-light-guiding area corresponding to one of the at least one elastic bodies and located below its corresponding elastic body. The backlight device also includes a plurality of light-directing structures formed on the back side of the light guide plate in areas other than the at least one non-light-guiding area. The plurality of light-directing structures are used to guide light rays incident on the plurality of light-directing structures to the front side of the light guide plate.

11. A light-emitting button, characterized in that... Include: The base plate has at least one first perforation; A membrane switch layer is disposed on the upper or lower surface of the base plate; The keycap is positioned above the base plate and can move vertically relative to the base plate. A lifting mechanism is disposed between the base plate and the keycap, the lifting mechanism restricts the movement of the keycap between an unpressed position and a pressed position, and the lifting mechanism includes at least one protruding structure; Backlight device; as well as At least one elastomer is formed on the backlight device, and the at least one elastomer corresponds to the at least one protruding structure. When the keycap is in the pressed position, the at least one protruding structure passes through the base plate and the thin-film switch layer and compresses the at least one elastomer on the backlight device; The backlight device includes a light guide plate and a light shielding film, and at least one elastomer is formed on the light shielding film, on the light guide plate, or between the light shielding film and the light guide plate.

12. A light-emitting button, characterized in that... Include: The base plate has at least one first perforation; A membrane switch layer is disposed on the upper or lower surface of the base plate; The keycap is positioned above the base plate and can move vertically relative to the base plate. A lifting mechanism is disposed between the base plate and the keycap, the lifting mechanism restricts the movement of the keycap between an unpressed position and a pressed position, and the lifting mechanism includes at least one protruding structure; Backlight device; as well as At least one elastomer is formed on the backlight device, and the at least one elastomer corresponds to the at least one protruding structure. When the keycap is in the pressed position, the at least one protruding structure passes through the base plate and the thin-film switch layer and compresses the at least one elastomer on the backlight device; The backlight device includes: a light guide plate having a front and a back; a reflector disposed on the back of the light guide plate; and a light-shielding film having at least one third perforation, each elastomer corresponding to one of the at least one third perforation, the at least one elastomer being formed on the front of the light guide plate, and the light-shielding film being disposed on the front of the light guide plate such that each elastomer passes through its corresponding third perforation; or, The backlight device includes: a light guide plate having a front side and a back side; a reflector disposed on the back side of the light guide plate; and a light-shielding film disposed on the front side of the light guide plate, wherein at least one elastomer is formed on the light-shielding film; or, The backlight device includes: a light guide plate having a front and a back; a reflector disposed on the back of the light guide plate; and a light-shielding film having at least one upwardly projecting first protrusion, each elastic body corresponding to one of the at least one first protrusion, the at least one elastic body being formed on the front of the light guide plate, and the light-shielding film being disposed on the front of the light guide plate such that each elastic body fits into its corresponding first protrusion; or, The backlight device includes: a light guide plate having a front side and a back side; a reflector disposed on the back side of the light guide plate; and a light-shielding film having at least one upwardly projecting second protrusion, the at least one second protrusion serving as the at least one elastic body, the light-shielding film being disposed on the front side of the light guide plate; or, The backlight device includes: a light guide plate having a front side and a back side, wherein at least one elastomer is formed on the front side of the light guide plate; a reflector disposed on the back side of the light guide plate; and a light-shielding film disposed on the front side of the light guide plate and covering the at least one elastomer.

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