TW202249049A - Illuminated keyswitch - Google Patents

Abstract

An illuminated keyswitch includes a base plate, a membrane switch layer, a keycap, a lifting mechanism, a backlight apparatus, and at least one resilient body. The base plate has at least one firstthrough opening. The membrane switch layer has at least one second through opening. The membrane switch layer is disposed on an upper surface or a lower surface of the base plate such that each second through opening is located above or below the corresponding first through opening. The lifting mechanism is disposed between the base plate and the keycap. The lifting mechanism includes at least one protruding structure. The at least one resilient body is formed on the backlight apparatus. The backlight apparatus is disposed below the base plate such that each resilient body is placed in the corresponding first through opening and the corresponding second through opening. When the keycap is in a pressed position, each protruding structures is placed in the corresponding first through opening and the corresponding second through opening and compresses the corresponding resilient body.

Description

Illuminated keys

The present invention relates to a luminous key, and in particular to a luminous key capable of improving the tactile feedback of pressing and eliminating noise during operation.

The keyboard has become a common input peripheral device on the market. In order to eliminate the noise during operation and improve the tactile feedback of pressing, the keys of the prior art are included in the membrane switch layer, and the elastic dome sheet forms a buffer structure relative to the bottom plate to absorb the keycap, lifting mechanism, and balance bar when pressing the key. Equal impact energy, thereby eliminating noise.

However, the structures of the buttons in the prior art for eliminating noise are quite complicated. Moreover, when the button is designed as a thinner button, part of the structure of the lifting mechanism will protrude into the perforated hole of the bottom plate, so that some parts of the lifting mechanism will inevitably hit the bottom plate. Therefore, the membrane switch layer or bottom plate of the thinned keypad cannot provide enough buffer space, and the structure for eliminating noise of the keypad in the prior art is difficult to implement on the thinned keypad. In addition, with regard to the luminous keys using the backlight device including the light guide plate, no technology using the backlight device to help eliminate noise has been proposed so far.

Therefore, one technical problem to be solved by the present invention is to provide a light-emitting key that utilizes a backlight device to help eliminate noise and improve the tactile feedback of pressing. The noise-eliminating structure of the light-emitting key according to the present invention can be implemented on a thin light-emitting key.

In order to achieve the above object, the present invention proposes a light-emitting key, which includes a bottom plate, a membrane 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 perforation; the membrane switch layer has at least one second perforation, and each second perforation corresponds to a first perforation in the at least one first perforation, and the membrane switch layer is arranged on the base plate The surface causes each second perforation to be located above its corresponding first perforation or the membrane switch layer is arranged on the lower surface of the bottom plate so that each second perforation is located below its corresponding first perforation; the keycap The keycap is placed above the bottom plate and the keycap can move vertically relative to the bottom plate; the lifting mechanism is arranged between the bottom plate and the keycap, the lifting mechanism restricts the keycap from moving between the unpressed position and the pressed position, and the lifting mechanism includes at least one protruding structure, Each protruding structure corresponds to a second hole in at least one second hole; at least one elastic body is formed on the backlight device, and each elastic body corresponds to a first hole in the at least one first hole, wherein the backlight The device is arranged under the bottom plate so that each elastic body is placed in its corresponding first hole and its corresponding second hole, wherein when the keycap is in the pressed position, each protruding structure extends into its corresponding first hole. the hole and its corresponding second hole and compress its corresponding elastic body.

As an optional technical solution, the backlight device includes a light guide plate, a reflective sheet and a light-shielding film. The light guide plate has a front side and a back side; the reflective sheet is placed on the back side of the light guide plate; the light-shielding film has at least one third hole, each elastic body corresponds to a third hole in the at least one third hole, and at least one elastic The body is formed on the front surface of the light guide plate, and the light-shielding film is arranged on the front surface of the light guide plate so that each elastic body passes through its corresponding third hole.

As an optional technical solution, the backlight device includes a light guide plate, a reflective sheet and a light-shielding film. The light guide plate has a front side and a back side; the reflective sheet is placed on the back side of the light guide plate; the light shielding film is placed on the front side of the light guide plate, and at least one elastic body is formed on the light shielding film.

As an optional technical solution, at least one non-light-guiding region is defined on the back of the light guide plate, each non-light-guiding region corresponds to one of the at least one elastic body and is located below the corresponding elastic body, and the backlight device also Comprising a plurality of light redirecting structures, the plurality of light redirecting structures are formed on the back surface of the light guide plate except at least one non-light-guiding area, and the plurality of light redirecting structures are used to guide the light emitted to the plurality of light redirecting structures The front of the light guide plate.

As an optional technical solution, 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 corresponds to one elastic body in the at least one elastic body and is located at its corresponding elastic Below the body, the bottom surface of the light-shielding film defines at least one light-reflecting area, each light-reflecting area corresponds to one of the elastic bodies in the at least one elastic body and is located below the corresponding elastic body, and the backlight device also includes at least one light-shielding film and At least one light-reflecting film, each light-shielding film corresponds to one light-shielding area in at least one light-shielding area and is formed on its corresponding light-shielding area, each light-shielding film corresponds to one light-reflecting area in at least one light-reflecting area and is formed on its corresponding light-shielding area area.

As an optional technical solution, the backlight device includes a light guide plate, a reflective sheet and a light-shielding film. The light guide plate has a front side and a back side; the reflective sheet is placed on the back side of the light guide plate; the light-shielding film has at least one first protruding portion protruding upward, and each elastic body corresponds to a first protrusion in the at least one first protruding portion At least one elastic body is formed on the front of the light guide plate, and the light-shielding film is placed on the front of the light guide plate so that each elastic body fits into its corresponding first protrusion.

As an optional technical solution, the backlight device includes a light guide plate, a reflective sheet and a light-shielding film. The light guide plate has a front side and a back side; the reflective sheet is placed on the back side of the light guide plate; the light-shielding film has at least one second protruding portion protruding upwards, and the at least one second protrusion is used as at least one elastic body, and the light-shielding film is placed on the light guide plate on the front.

As an optional technical solution, at least one non-light-guiding area is defined on the back of the light guide plate, and each non-light-guiding area corresponds to one of the at least one second protrusion and is located at the edge of the corresponding second protrusion. Below, the backlight device further includes a plurality of light redirecting structures, which are formed on other areas of the back surface of the light guide plate except the at least one non-light guiding area, and the plurality of light redirecting structures are used for directing light to multiple The light of a light redirecting structure is directed to the front of the light guide plate.

As an optional technical solution, the backlight device includes a light guide plate, a reflective sheet and a light-shielding film. The light guide plate has a front side and a back side. At least one elastic body is formed on the front side of the light guide plate; the reflective sheet is placed on the back side of the light guide plate; the light shielding film is placed on the front side of the light guide plate and the light shielding film covers at least one elastic body.

As an optional technical solution, at least one non-light-guiding region is defined on the back of the light guide plate, each non-light-guiding region corresponds to one of the at least one elastic body and is located below the corresponding elastic body, and the backlight device also includes A plurality of light redirecting structures, the plurality of light redirecting structures are formed on other areas of the back of the light guide plate except at least one non-light-guiding area, and the plurality of light redirecting structures are used to guide the light emitted to the plurality of light redirecting structures The front of the light board.

In addition, the present invention also proposes a light-emitting key, which includes a base plate, a membrane 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 hole; the membrane switch layer is arranged on the upper surface or the lower surface of the base plate; the key cap is placed above the base plate and the key cap can move vertically relative to the base plate; the lifting mechanism is arranged between the base plate and the key cap, The lifting mechanism restricts the movement of the keycap between the unpressed position and the pressed position. The lifting mechanism includes at least one protruding structure; at least one elastic body is formed on the backlight device, and at least one elastic body corresponds to at least one protruding structure. When in position, at least one protruding structure passes through the bottom plate and the membrane switch layer and compresses at least one elastic body on the backlight device.

Different from the prior art, the light-emitting button according to the present invention does not form a buffer structure on the membrane 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 tactile feedback.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , which schematically depict a light-emitting key 1 according to a preferred embodiment of the present invention. FIG. 1 schematically shows a light-emitting key 1 according to a preferred embodiment of the present invention in an external view. FIG. 2 schematically shows a light-emitting key 1 according to a preferred embodiment of the present invention in an expanded view of components and components. FIG. 3 is a cross-sectional view along line A-A of the light-emitting key 1 in FIG. 2 after assembly and in an unpressed position. FIG. 4 is a cross-sectional view along line A-A of the illuminated key 1 in FIG. 2 after being assembled and in the pressed position.

As shown in Fig. 1, Fig. 2 and Fig. 3, the light-emitting button 1 according to the preferred embodiment of the present invention includes a bottom plate 10, a membrane 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 hole 104 . The membrane switch layer 11 has at least one second perforation 112 . Each second perforation 112 corresponds to one first perforation 104 in the at least one first perforation 104 . The membrane switch layer 11 is disposed on the upper surface 100 or the lower surface 102 of the bottom plate 10 such that each second perforation 112 is located above or below its corresponding first perforation 104 . In the examples shown in FIGS. 2 , 3 and 4 , the membrane switch layer 11 is disposed on the upper surface 100 of the base plate 10 .

The keycap 12 is placed on the base plate 10 and can move vertically relative to the base plate 10 . The lifting mechanism 13 is disposed between the bottom plate 10 and the keycap 12 . The lifting mechanism 13 restricts the movement of the keycap 12 between the unpressed position (as shown in FIG. 3 ) and the pressed position (as shown in FIG. 4 ). The lifting mechanism 13 includes at least one protruding structure 136 . Each protruding structure 136 corresponds to at least one first hole 104 in the first hole 104 . In the examples shown in FIG. 2 , FIG. 3 and FIG. 4 , the lifting mechanism 13 includes a first connecting member 132 and a second connecting member 134 . The first connecting member 132 and the second connecting member 134 are combined into a so-called scissor lift mechanism 13 , but the present invention is not limited thereto. The elevating mechanism 13 of the luminous button 1 according to the present invention may also be a butterfly elevating mechanism 13, a magnetic elevating mechanism 13, and the like. It should be emphasized that, in the examples shown in FIG. 3 and FIG. 4 , the light-emitting key 1 according to the present invention belongs to the thinned light-emitting key 1 .

At least one elastic body 15 is formed on the backlight device 14 . Each elastic body 15 corresponds to one first perforation 104 in the at least one first perforation 104 . The backlight device 14 is disposed under the base plate 10 , so that each elastic body 15 is placed in its corresponding first hole 104 and its corresponding second hole 112 . In the example shown in FIG. 2 , two elastic bodies 15 are shown as representatives.

In a specific embodiment, the at least one elastic body 15 may be formed of ultraviolet curable resin, hydrogel, silica gel, or other commercial polymer materials with high elastic modulus.

As shown in FIG. 4 , when the keycap 12 is in the pressed position, each protruding structure 136 protrudes into its corresponding first hole 104 and its corresponding second hole 112 , and compresses its corresponding elastic body 15 . Thereby, when the keycap 12 is pressed, the elastic body 15 can absorb the impact energy of the lifting mechanism 13 , so as to eliminate the noise and improve the tactile feedback of pressing.

In a specific embodiment, the top view shape of the elastic body 15 may be circular, elliptical, or rectangular. 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.

In the present invention, the light-emitting key 1 includes a bottom plate 10 , a membrane switch layer 11 , a keycap 12 , a lifting mechanism 13 , a backlight device 14 and at least one elastic body 15 . The base plate 10 has at least one first perforation 104; the membrane switch layer 11 is arranged on the upper surface or the lower surface of the base plate 10; the keycap 12 is placed above the base plate 10 and the keycap 12 can move vertically relative to the base plate 10; the lifting mechanism 13 is disposed between the bottom plate 10 and the keycap 12, and the lifting mechanism 13 restricts the movement of the keycap 12 between the unpressed position and the pressed position. The lifting mechanism 13 includes 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 . Wherein, when the keycap 12 is at the pressed position, at least one protruding structure 136 passes through the bottom plate 10 and the membrane switch layer 11 and compresses at least one elastic body 15 on the backlight device 14 .

Please refer to FIG. 5 . FIG. 5 is a partial cross-sectional view of a specific embodiment of the backlight device 14 and the elastic body 15 of the light-emitting key 1 according to the present invention.

As shown in FIG. 5 , in a specific embodiment, the backlight device 14 includes a light guide plate 140 , a reflective sheet 142 and a light shielding film 143 . The light guide plate 140 has a front 1402 and a back 1404 . The reflective sheet 142 is disposed on the back surface 1404 of the light guide plate 140 . The light shielding film 143 has at least one third hole 1434 . Each elastic body 15 corresponds to one third hole 1434 in at least one third hole 1434 . At least one elastic body 15 is formed on the front surface 1402 of the light guide plate 140 . The light-shielding film 143 is disposed on the front surface 1402 of the light guide plate 140 such that each elastic member 15 passes through its corresponding third hole 1434 .

In a specific embodiment, the light guide plate 140 can be made of acrylic, silicone, thermoplastic polyurethane (TPU) or other commercial polymer materials with good light guiding properties. .

In a specific embodiment, the reflective sheet 142 may be formed of white polyester film, but the invention is not limited thereto.

In the above specific embodiments, the light in the area of the light guide plate 140 corresponding to the at least one elastic body 15 will not be used because it is blocked by the at least one elastic body 15. In order to reduce the light guide energy loss in this area, as shown in FIG. 5 As shown, further, the back surface 1404 of the light guide plate 140 defines at least one non-light guide area 1406 . Each non-light guiding area 1406 corresponds to one elastic body 15 in at least one elastic body 15 and is located below the corresponding elastic body 15 . The backlight device 14 also includes a plurality of light redirecting structures 144 . A plurality of light redirecting structures 144 are formed on other areas of the back surface 1404 of the light guide plate 140 except at least one non-light guiding area 1406 . The backlight device 14 further includes a plurality of light emitting elements 146 . In the example shown in FIG. 2 , a plurality of light-emitting elements 146 are arranged at the side of the adjacent light guide plate 140 (the light guide plate 140 is not marked in FIG. The side is incident into the light guide plate 140, but the present invention is not limited thereto. There are also many different designs for the placement positions of the plurality of light emitting elements 146 , which will not be repeated here. The light emitted by the plurality of light emitting elements 146 enters into the light guide plate 140 . The plurality of light redirecting structures 144 are used to guide the light directed toward the plurality of light redirecting structures 144 to the front surface 1402 of the light guide plate 140 . The plurality of light redirecting structures 144 can be formed by printing dot-shaped light-colored (for example, white) ink on the back 1404 of the light guide plate 140, or can use micro-lens, or can be integrated with the light guide plate 140 by coating. forming. However, the formation of the plurality of light redirecting structures 144 is not limited to the above process.

Please refer to FIG. 6 . 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 invention.

As shown in FIG. 6 , in another embodiment, the backlight device 14 includes a light guide plate 140 , a reflective sheet 142 and a light shielding film 143 . The light guide plate 140 has a front 1402 and a back 1404 . The reflective sheet 142 is disposed on the back surface 1404 of the light guide plate 140 . The light-shielding film 143 is disposed on the front surface 1402 of the light guide plate 140 . At least one elastic body 15 is formed on the light shielding film 143 .

In the above-mentioned specific embodiments, also in order to reduce the light guide energy loss of the light guide plate 140 , as shown in FIG. 6 , further, at least one non-light guide area 1406 is defined on the back surface 1404 of the light guide plate 140 . Each non-light guiding area 1406 corresponds to one elastic body 15 in at least one elastic body 15 and is located below the corresponding elastic body 15 . The backlight device 14 also includes a plurality of light redirecting structures 144 . A plurality of light redirecting structures 144 are formed on other areas of the back surface 1404 of the light guide plate 140 except at least one non-light guiding area 1406 . Likewise, the light emitted by the plurality of light emitting elements 146 enters into the light guide plate 140 and is then guided by the light guide plate 140 . The plurality of light redirecting structures 144 are used to guide the light directed toward the plurality of light redirecting structures 144 to the front surface 1402 of the light guide plate 140 .

In the above specific embodiments, also in order to reduce the light guide energy loss of the light guide plate 140 , as shown in FIG. 6 , further, the light shielding film 143 has a top surface 1430 and a bottom surface 1432 . The top surface 1430 of the light-shielding film 143 defines at least one light-shielding region 1436 . Each light-shielding area 1436 corresponds to one elastic body 15 in the at least one elastic body 15 and is located below the corresponding elastic body 15 . The bottom surface 1432 of the light-shielding film 143 defines at least one reflective area 1437 . Each reflective area 1437 corresponds to one elastic body 15 in the at least one elastic body 15 and is located below the corresponding elastic body 15 . The backlight device 14 further includes at least one light-shielding film 147 and at least one light-reflecting film 148 . Each light shielding film 147 corresponds to one light shielding region 1436 in at least one light shielding region 1436 and is formed on the corresponding light shielding region 1436 . The at least one light-shielding film 147 is used for shielding the light incident on the at least one light-shielding film 147 . Each reflective film 148 corresponds to at least one reflective region 1437 in the reflective region 1437 and is formed on the corresponding reflective region 1437 . The at least one reflective film 148 is used to reflect the light incident on the at least one reflective film 148 . At least one light-shielding film 147 can be formed by coating black or dark ink, but the invention is not limited thereto. At least one reflective film 148 can be formed by coating white or light color ink, but the invention is not limited thereto.

Please refer to FIG. 7 . FIG. 7 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 invention.

As shown in FIG. 7 , in another embodiment, the backlight device 14 includes a light guide plate 140 , a reflective sheet 142 and a light shielding film 143 . The light guide plate 140 has a front 1402 and a back 1404 . The reflective sheet 142 is disposed on the back surface 1404 of the light guide plate 140 . The light-shielding film 143 has at least one first protruding portion 1438 protruding upward. Each elastic body 15 corresponds to one of the at least one first protrusion 1438 . The light-shielding film 143 can form at least one first protruding portion 1438 by a punching process. At least one elastic body 15 is formed on the front surface 1402 of the light guide plate 140 . The light-shielding film 143 is disposed on the front surface 1402 of the light guide plate 140 , so that each elastic body 15 fits into its corresponding first protruding portion 1438 .

In the above-mentioned specific embodiments, also in order to reduce the light guide energy loss of the light guide plate 140 , as shown in FIG. 7 , further, at least one non-light guide area 1406 is defined on the back surface 1404 of the light guide plate 140 . Each non-light-guiding area 1406 corresponds to one elastic body 15 in the at least one elastic body 15 and is located below the corresponding elastic body 15 . The backlight device 14 also includes a plurality of light redirecting structures 144 . A plurality of light redirecting structures 144 are formed on other areas of the back surface 1404 of the light guide plate 140 except at least one non-light guiding area 1406 . Likewise, the light emitted by the plurality of light emitting elements 146 enters into the light guide plate 140 and is then guided by the light guide plate 140 . The plurality of light redirecting structures 144 are used to guide the light directed toward the plurality of light redirecting structures 144 to the front surface 1402 of the light guide plate 140 .

Please refer to FIG. 8 . FIG. 8 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 invention.

As shown in FIG. 8 , in another embodiment, the backlight device 14 includes a light guide plate 140 , a reflective sheet 142 and a light shielding film 143 . The light guide plate 140 has a front 1402 and a back 1404 . The reflective sheet 142 is disposed on the back surface 1404 of the light guide plate 140 . The light-shielding film 143 has at least one second protruding portion 1439 protruding upward. At least one second protrusion 1439 is at least one elastic body 15 . The light-shielding film 143 can form at least one second protruding portion 1439 by a punching process. The light-shielding film 143 is disposed on the front surface 1402 of the light guide plate 140 .

In the above specific embodiments, also in order to reduce the loss of light guiding energy of the light guide plate 140 , as shown in FIG. 8 , 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 second protrusion 1439 and is located below the corresponding second protrusion 1439 . The backlight device 14 also includes a plurality of light redirecting structures 144 . A plurality of light redirecting structures 144 are formed on other areas of the back surface 1404 of the light guide plate 140 except at least one non-light guiding area 1406 . Likewise, the light emitted by the plurality of light emitting elements 146 enters into the light guide plate 140 and is then guided by the light guide plate 140 . The plurality of light redirecting structures 144 are used to guide the light directed toward the plurality of light redirecting structures 144 to the front surface 1402 of the light guide plate 140 .

Please refer to FIG. 9 . FIG. 9 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 invention.

As shown in FIG. 9 , in another embodiment, the backlight device 14 includes a light guide plate 140 , a reflective sheet 142 and a light shielding film 143 . The light guide plate 140 has a front 1402 and a back 1404 . At least one elastic body 15 is formed on the front surface 1402 of the light guide plate 140 . The reflective sheet 142 is disposed on the back surface 1404 of the light guide plate 140 . The light-shielding film 143 is disposed on the front surface 1402 of the light guide plate 140 and covers at least one elastic body 15 .

In the above-mentioned specific embodiments, also in order to reduce the light guide energy loss of the light guide plate 140 , as shown in FIG. 9 , further, the back surface 1404 of the light guide plate 140 defines at least one non-light guide area 1406 . Each non-light guiding area 1406 corresponds to one elastic body 15 of the at least one elastic body 15 and is located below the corresponding elastic body 15 . The backlight device 14 also includes a plurality of light redirecting structures 144 . A plurality of light redirecting structures 144 are formed on other areas of the back surface 1404 of the light guide plate 140 except at least one non-light guiding area 1406 . Likewise, the light emitted by the plurality of light emitting elements 146 enters into the light guide plate 140 and is then guided by the light guide plate 140 . The plurality of light redirecting structures 144 are used to guide the light directed toward the plurality of light redirecting structures 144 to the front surface 1402 of the light guide plate 140 .

In a specific embodiment, as shown in FIG. 2 , the membrane switch layer 11 includes a switch 114 . The switch 114 is located under the keycap 12 . The light-emitting key 1 according to a preferred embodiment of the present invention further includes an elastic actuating element 16 . The elastic actuating element 16 includes an actuating column (not shown in the figure). The elastic actuating element 16 is disposed between the keycap 12 and the membrane switch layer 11 and above the switch 114 . When the keycap 12 is pressed and moved to the pressed position, the elastic actuating element 16 is deformed and the actuating post actuates the switch 114 to open. When the keycap 12 is released, the elastic actuating element 16 provides the restoring force required for the keycap 12 to return to the unpressed position, and closes the switch 114 .

From the above detailed description of the present invention, it can be clearly understood that the light-emitting key according to the present invention does not form a buffer structure on the membrane 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. sense feedback. The noise-eliminating structure of the light-emitting key according to the present invention can be implemented on a thin light-emitting key.

Through the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the aspect of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the purpose is to cover various changes and equivalent arrangements within the scope of the patent application for the present invention. Therefore, the aspect of the scope of the patent application for the present invention should be interpreted in the broadest way based on the above description, so as to cover all possible changes and equivalent arrangements.

1: Illuminated button 10: Bottom plate 100: upper surface 102: lower surface 104: The first hole 11: Membrane switch layer 112: The second hole 114: switch 12: Keycap 13: Lifting mechanism 132: the first connecting member 134: the second connecting member 136:Prominent structure 14: Backlight device 140: light guide plate 1402: front 1404: back 1406: Unguided area 142: reflective sheet 143: shading diaphragm 1430: top surface 1432: bottom surface 1434: The third hole 1436: shading area 1437: reflective area 1438: First salient 1439: Second protrusion 144: Light steering structure 146: Light emitting element 147: Shading film 148: reflective film 15: Elastomer 16: Elastic actuation element

Fig. 1 is an appearance view of a luminous key according to a preferred embodiment of the present invention. Fig. 2 is an expanded view of elements and components of a luminous key according to a preferred embodiment of the present invention. Fig. 3 is a cross-sectional view along line A-A of the light-emitting button in Fig. 2 after being assembled and in the unpressed position. Fig. 4 is a cross-sectional view along line A-A of the light-emitting button in Fig. 2 after being assembled and in the pressed position. FIG. 5 is a partial cross-sectional view of a specific embodiment of a backlight device and an elastic body for a light-emitting key according to the present invention. 6 is a partial cross-sectional view of another embodiment of the backlight device and the elastic body of the light-emitting key according to the present invention. 7 is a partial cross-sectional view of another embodiment of the backlight device and the elastic body of the light-emitting key according to the present invention. 8 is a partial cross-sectional view of another embodiment of the backlight device and the elastic body of the light-emitting key according to the present invention. 9 is a partial cross-sectional view of another embodiment of the backlight device and the elastic body of the light-emitting key according to the present invention.

1: Illuminated button

10: Bottom plate

100: upper surface

102: lower surface

104: The first hole

11: Membrane switch layer

112: The second hole

12: Keycap

13: Lifting mechanism

132: the first connecting member

134: the second connecting member

136:Prominent structure

14: Backlight device

15: Elastomer

Claims (11)

A luminous button, comprising: A base plate with at least one first perforation; a membrane switch layer with at least one second perforation, each second perforation corresponding to one of the at least one first perforation, the membrane switch layer is disposed on an upper surface of the base plate such that each second perforation is located above its corresponding first perforation or the membrane switch layer is disposed on a lower surface of the base such that each second perforation is located above its corresponding first perforation. Below the corresponding first perforation; a key cap is placed above the base plate and the key cap can move vertically relative to the base plate; a lifting mechanism is arranged between the base plate and the key cap, and the lift The mechanism restricts the movement of the keycap between an unpressed position and a pressed position, the lifting mechanism includes at least one protruding structure, each protruding structure corresponds to one of the at least one second perforated hole; a backlight device and at least one elastic body is formed on the backlight device, each elastic body corresponds to a first hole in the at least one first hole, wherein the backlight device is arranged under the bottom plate so that each elastic body The system is placed in its corresponding first hole and its corresponding second hole, wherein when the keycap is in the pressed position, each protruding structure extends into its corresponding first hole and its corresponding second hole and compresses its corresponding elastomer. The light-emitting button as described in claim 1, wherein the backlight device includes: A light guide plate has a front side and a back side; a reflective sheet is arranged on the back side of the light guide plate; and a light-shielding film has at least one third perforation, and each elastic body corresponds to at least one third A third hole in the hole, the at least one elastic system is formed on the front side of the light guide plate, the light-shielding film is placed on the front side of the light guide plate so that each elastic body passes through its corresponding first Three holes. The light-emitting button as described in claim 1, wherein the backlight device includes: A light guide plate has a front side and a back side; a reflective sheet is placed on the back side of the light guide plate; and a light-shielding film is placed on the front side of the light guide plate, wherein the at least one elastic system forms on the shading film. The light-emitting key according to claim 3, wherein the back surface of the light guide plate defines at least one non-light-guiding region, each non-light-guiding region corresponds to one of the at least one elastic body and is located on the corresponding elastic body Below, the backlight device also includes a plurality of light redirecting structures, the plurality of light redirecting structures are formed on other areas of the back surface of the light guide plate except the at least one non-light guiding area, the plurality of light redirecting structures It is used for directing one of the light beams directed towards the plurality of light turning structures to the front surface of the light guide plate. The light-emitting button according to claim 4, wherein 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, and each light-shielding area corresponds to at least one elastic body one of the elastic bodies and located below its corresponding elastic body, the bottom surface of the light-shielding film defines at least one light-reflecting area, and each light-reflecting area corresponds to one of the at least one elastic body and is located at its corresponding elastic body Below the body, the backlight device also includes at least one light-shielding film and at least one light-shielding film, each light-shielding film corresponds to one of the light-shielding areas in the at least one light-shielding area and is formed on its corresponding light-shielding area, and each light-shielding film corresponds to the light-shielding area One of the at least one reflective area is formed on its corresponding reflective area. The light-emitting button as described in claim 1, wherein the backlight device includes: A light guide plate has a front side and a back side; a reflective sheet is placed on the back side of the light guide plate; and a light-shielding film has at least one first protruding portion protruding upward, and each elastic body corresponds to at least One of the first protrusions, the at least one elastic system is formed on the front side of the light guide plate, the light-shielding film is placed on the front side of the light guide plate so that each elastic body fits into the Its corresponding first protruding part. The light-emitting button as described in claim 1, wherein the backlight device includes: A light guide plate has a front side and a back side; a reflective sheet is placed on the back side of the light guide plate; and a light-shielding film has at least one second protruding portion protruding upward, and the at least one second protruding portion That is, as the at least one elastic body, the light-shielding film is arranged on the front surface of the light guide plate. The light-emitting key according to claim 7, wherein the back surface of the light guide plate defines at least one non-light-guiding area, and each non-light-guiding area corresponds to one of the at least one second protrusions and is located on it Below the corresponding second protruding portion, the backlight device further includes a plurality of light redirecting structures, and the plurality of light redirecting structures are formed on other areas of the back surface of the light guide plate except the at least one non-light guiding area, A light enters into the light guide plate, and the plurality of light diversion structures are used to direct the light directed to the plurality of light diversion structures to the front surface of the light guide plate. The light-emitting button as described in claim 1, wherein the backlight device includes: A light guide plate has a front side and a back side, the at least one elastic system is formed on the front side of the light guide plate; a reflective sheet is placed on the back side of the light guide plate; and a light-shielding film is placed on the The light-shielding film covers the at least one elastic body on the front surface of the light guide plate. The light-emitting key according to claim 2, 6 or 9, wherein the back surface of the light guide plate defines at least one non-light-guiding region, each non-light-guiding region corresponds to one of the at least one elastic body and is located therein Below the corresponding elastic body, the backlight device further includes a plurality of light redirecting structures, the plurality of light redirecting structures are formed on other areas of the back surface of the light guide plate except the at least one non-light guiding area, the plurality of A light redirection structure is used to direct one of the light rays directed towards the plurality of light redirection structures to the front surface of the light guide plate. A luminous button, comprising: A base plate; a membrane switch layer, which is arranged on one of the upper surface or the lower surface of the base plate; a key cap, which is placed above the base plate and can move vertically relative to the base plate; a lifting mechanism, which is arranged 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; a backlight device; and at least one elastic body, It is formed on the backlight device, and each elastic body corresponds to at least one protruding structure, wherein when the keycap is at the pressing position, the at least one protruding structure passes through the bottom plate and the membrane switch layer and compresses the backlight device The at least one elastic body.

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