Perspective key module and control device using same

Abstract

The invention provides a perspective key module and a control device using the perspective key module. The perspective key module comprises a plurality of key caps, an elastic element, a switching circuit and a bottom plate. The elastic element comprises a plurality of bearing parts, a plurality of side walls and a bottom, wherein each bearing part is connected with one key cap. The side wall is located between the bearing part and the bottom. The bottom is provided with a connecting area and a peripheral area, and the side walls are located in the connecting area. The peripheral area surrounds the periphery of the connecting area. The bottom is provided with at least one positioning groove in the peripheral area. The switch circuit is arranged below the elastic element. And the bottom plate is arranged below the switching circuit. The bottom plate is provided with at least one clamping hook, and the clamping hook can penetrate through the switch circuit upwards and then is placed in the positioning groove, so that the switch circuit is fixed between the elastic element and the bottom plate.

Description

Technical Field

[0001] The present invention relates to a see-through key module and a control device using the see-through key module. In the control device, the see-through key module structure is arranged above a display panel to provide a physical key pressing feel and also allow the graphic image of the display panel to be fully revealed. Background Art

[0002] The transparent key module used in the existing control device is composed of multiple layers of components stacked together. However, the thickness of each layer of components is not consistent and it is easy to produce a depression when pressed, making the pressing action uncertain. In addition, the depressed components will also cause interference patterns on the display panel below, and even cause damage to the display components. Therefore, an improved design is urgently needed.

[0003] In addition, there is a lack of alignment design between the components of each layer in the transparent key module, which causes offset during assembly and makes it impossible to align with the graphic images generated by the display panel, affecting the user's operating experience and evaluation of the control device. This defect also needs to be solved by the industry. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the present invention provides a see-through key module, in which a bottom plate is arranged between the switch circuit and the display panel. In addition to supporting the switch circuit from below so that it can be triggered smoothly without causing a dent, the hook on the bottom plate can also be matched with the positioning groove of the elastic element to clamp the contact film layer and the switch circuit therein to complete the alignment. Furthermore, the top cover and the bottom plate can also clamp and fix the elastic element, the contact film layer and the switch circuit therebetween to complete the assembly of the entire see-through key module.

[0005] According to one embodiment of the present invention, a transparent key module is provided. The transparent key module includes a plurality of keycaps, an elastic element and a bottom plate. The elastic element includes a plurality of bearing parts, a plurality of side walls and a bottom, wherein each bearing part is connected to a keycap. The side wall is located between the bearing part and the bottom. The bottom has a connecting area and a peripheral area, a plurality of side walls are located in the connecting area, and the peripheral area surrounds the connecting area. At least one positioning groove is arranged in the peripheral area of ​​the bottom. The switch circuit is arranged below the elastic element. The bottom plate is arranged below the switch circuit, and the bottom plate has at least one hook, which can pass through the switch circuit upward and then be placed in the positioning groove to fix the switch circuit between the elastic element and the bottom plate.

[0006] In some embodiments of the present invention, the bearing portion and the corresponding side walls and bottom together form a crater structure from top to bottom, and the center of the crater structure is a cavity.

[0007] In some embodiments of the present invention, the cavity has a first opening and a second opening, the first opening and the second opening are located at opposite ends, the first opening is adjacent to the keycap, and the second opening is adjacent to the switch circuit.

[0008] In some embodiments of the present invention, the switch circuit includes an upper film layer, a spacer and a lower film layer, the upper film layer includes a top surface, a plurality of light-transmitting openings and a bottom surface, the plurality of light-transmitting openings of the upper film layer are connected to the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer includes a top surface, a plurality of light-transmitting openings and a bottom surface, the plurality of light-transmitting openings of the lower film layer are connected to the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, the upper film layer also includes a circuit contact, the circuit contact of the upper film layer is formed on the bottom surface of the upper film layer, and the lower film layer is provided with a spacer. The film layer also includes a circuit contact, the circuit contact of the lower film layer is formed on the top surface of the lower film layer, the circuit contact of the upper film layer overlaps with the circuit contact of the lower film layer in the vertical direction, and the circuit contact of the upper film layer is separated from the circuit contact of the lower film layer by a spacer, the circuit contact of the upper film layer is adjacent to the light-transmitting opening of the upper film layer, and the circuit contact of the lower film layer is adjacent to the light-transmitting opening of the lower film layer, the range of the light-transmitting opening of the upper film layer is smaller than the range of the second opening of the crater structure, and the range of the light-transmitting opening of the lower film layer is smaller than the range of the second opening of the crater structure, and the bearing part or the keycap can be pressed onto the upper film layer after passing downward through the second opening of the crater structure, so that the circuit contact of the upper film layer contacts the circuit contact of the lower film layer.

[0009] In some embodiments of the present invention, the base plate includes a top surface, multiple light-transmitting openings and a bottom surface. The top surface of the base plate faces the lower film layer. The multiple light-transmitting openings of the base plate connect the top surface of the base plate and the bottom surface of the base plate. The range of the light-transmitting openings of the base plate is less than or equal to the range of the light-transmitting openings of the lower film layer, and in the vertical direction, the light-transmitting openings of the base plate are aligned with the light-transmitting openings of the lower film layer, so that when the circuit contacts of the upper film layer trigger the circuit contacts of the lower film layer, the top surface of the base plate supports the lower film layer.

[0010] In some embodiments of the present invention, the switch circuit includes an upper film layer, a spacer and a lower film layer, the upper film layer includes a top surface, at least one first positioning hole and a bottom surface, the first positioning hole of the upper film layer connects the top surface of the upper film layer and the bottom surface of the upper film layer, and the bottom surface of the upper film layer faces the lower film layer, the lower film layer includes a top surface, at least one first positioning hole and a bottom surface, the first positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, and the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, and the hook of the bottom plate passes through the first positioning hole of the lower film layer and the first positioning hole of the upper film layer in sequence and then is placed in the positioning groove.

[0011] In some embodiments of the present invention, there are two positioning grooves, which are located at opposite ends of the peripheral area; there are two hooks, which are located at opposite ends of the bottom plate; the switch circuit includes an upper film layer, a spacer and a lower film layer; the upper film layer includes a top surface, two first positioning holes and a bottom surface; the first positioning holes of the upper film layer are connected to the top surface of the upper film layer and the bottom surface of the upper film layer; the bottom surface of the upper film layer faces the lower film layer; the lower film layer includes a top surface, two first positioning holes and a bottom surface; the first positioning holes of the lower film layer are connected to the top surface of the lower film layer and the bottom surface of the lower film layer; the top surface of the lower film layer faces the upper film layer; the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer; the two hooks of the bottom plate pass upward through the two first positioning holes of the lower film layer and the two first positioning holes of the upper film layer and are placed in the two positioning grooves.

[0012] In some embodiments of the present invention, the transparent key module also includes a cover, which is arranged above the connection area. The cover has a connection frame and multiple openings, each opening corresponds to a keycap, and the keycap can be exposed from the opening of the cover. The connection frame has a top surface and a bottom surface, and multiple openings connect the top surface and the bottom surface. The cover also includes at least one protrusion, which extends downward from the bottom surface of the connection frame.

[0013] In some embodiments of the present invention, the connection area of ​​the elastic element has at least one positioning hole, the switch circuit includes an upper film layer, a spacer and a lower film layer, the upper film layer includes a top surface, at least one second positioning hole and a bottom surface, the second positioning hole of the upper film layer connects the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer includes a top surface, at least one second positioning hole and a bottom surface, the second positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, and the top surface of the lower film layer is Facing the upper film layer, a spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer. The bottom plate includes a top surface, at least one positioning hole and a bottom surface. The top surface of the bottom plate faces the lower film layer. The positioning hole of the bottom plate connects the top surface of the bottom plate and the bottom surface of the bottom plate. The convex column of the face cover passes downward through the positioning hole of the connection area of ​​the elastic element, the second positioning hole of the upper film layer and the second positioning hole of the lower film layer in sequence, and then extends into the positioning hole of the bottom plate to clamp the elastic element and the switch circuit between the face cover and the bottom plate.

[0014] In some embodiments of the present invention, the transparent key module further includes a sealing glue formed around the protruding column extending into the positioning hole of the bottom plate.

[0015] In some embodiments of the present invention, the protrusion extending into the positioning hole of the bottom plate can be formed into a rivet head through a riveting process.

[0016] According to one embodiment of the present invention, a transparent key module is provided. The transparent key module includes a plurality of keycaps, an elastic element, a contact membrane layer, a switch circuit and a bottom plate. The elastic element includes a plurality of bearing parts, a plurality of side walls and a bottom, wherein each bearing part is connected to a keycap. The side wall is located between the bearing part and the bottom. The bottom has a connection area and a peripheral area, a plurality of side walls are located in the connection area, the peripheral area surrounds the connection area, and the bottom is provided with at least one positioning groove in the peripheral area. The contact membrane layer is arranged below the elastic element. The switch circuit is arranged below the contact membrane layer. The bottom plate is arranged below the switch circuit, and the bottom plate has at least one hook, which can pass through the switch circuit and the contact membrane layer in sequence upward and then be placed in the positioning groove, so as to fix the contact membrane layer and the switch circuit between the elastic element and the bottom plate.

[0017] In some embodiments of the present invention, the supporting portion and the corresponding side walls and bottom together form a crater structure from top to bottom. The center of the crater structure is a cavity. The cavity has a first opening and a second opening. The first opening and the second opening are located at opposite ends. The first opening is adjacent to the keycap, and the second opening is adjacent to the contact membrane layer.

[0018] In some embodiments of the present invention, the contact film layer includes a top surface, a plurality of light-transmitting openings, a bottom surface and at least one protruding structure, the protruding structure of the contact film layer is formed on the top surface of the contact film layer, and the protruding structure of the contact film layer is adjacent to the light-transmitting opening, the plurality of light-transmitting openings of the contact film layer are connected to the top surface of the contact film layer and the bottom surface of the contact film layer, the bottom surface of the contact film layer faces the upper film layer, the switch circuit includes an upper film layer, a spacer and a lower film layer, the upper film layer includes a top surface, a plurality of light-transmitting openings and a bottom surface, the plurality of light-transmitting openings of the upper film layer are connected to the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer includes a top surface, a plurality of light-transmitting openings and a bottom surface, the plurality of light-transmitting openings of the lower film layer are connected to the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, the upper film layer also includes The invention relates to a circuit contact, wherein the circuit contact of the upper film layer is formed on the bottom surface of the upper film layer, and the lower film layer also includes a circuit contact, and the circuit contact of the lower film layer is formed on the top surface of the lower film layer. The protruding structure of the contact film layer, the circuit contact of the upper film layer and the circuit contact of the lower film layer overlap in the vertical direction, and the circuit contact of the upper film layer is separated from the circuit contact of the lower film layer by a spacer, the circuit contact of the upper film layer is adjacent to the light-transmitting opening of the upper film layer, and the circuit contact of the lower film layer is adjacent to the light-transmitting opening of the lower film layer, the range of the light-transmitting opening of the contact film layer is smaller than the range of the second opening of the crater structure, the range of the light-transmitting opening of the upper film layer is smaller than the range of the second opening of the crater structure, and the range of the light-transmitting opening of the lower film layer is smaller than the range of the second opening of the crater structure, the bearing part or the keycap can pass downward through the second opening of the crater structure and then press onto the protruding structure of the contact film layer, and the protruding structure then presses the upper film layer, causing the circuit contact of the upper film layer to contact the circuit contact of the lower film layer.

[0019] In some embodiments of the present invention, the base plate includes a top surface, multiple light-transmitting openings and a bottom surface. The top surface of the base plate faces the lower film layer. The multiple light-transmitting openings of the base plate connect the top surface of the base plate and the bottom surface of the base plate. The range of the light-transmitting openings of the base plate is less than or equal to the range of the light-transmitting openings of the lower film layer, and in the vertical direction, the light-transmitting openings of the base plate are aligned with the light-transmitting openings of the lower film layer, so that when the circuit contacts of the upper film layer trigger the circuit contacts of the lower film layer, the top surface of the base plate supports the lower film layer.

[0020] In some embodiments of the present invention, the contact film layer includes a top surface, at least one first positioning hole, a bottom surface and at least one protruding structure, the protruding structure of the contact film layer is formed on the top surface of the contact film layer, the at least one first positioning hole of the contact film layer connects the top surface of the contact film layer and the bottom surface of the contact film layer, the bottom surface of the contact film layer faces the upper film layer, the switch circuit includes an upper film layer, a spacer and a lower film layer, the upper film layer includes a top surface, at least one first positioning hole and a bottom surface, the first positioning hole of the upper film layer connects the top surface of the upper film layer and the upper The bottom surface of the film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer includes a top surface, at least one first positioning hole and a bottom surface, the first positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, the hook of the bottom plate passes through the first positioning hole of the lower film layer, the first positioning hole of the upper film layer and the first positioning hole of the contact film layer in sequence and then is placed in the positioning groove.

[0021] In some embodiments of the present invention, the number of positioning grooves is two, and the two positioning grooves are located at opposite ends of the peripheral area. The number of hooks is two, and the two hooks are located at opposite ends of the bottom plate. The contact film layer includes a top surface, two first positioning holes, a bottom surface, and at least one protruding structure. The protruding structure of the contact film layer is formed on the top surface of the contact film layer. The first positioning hole of the contact film layer connects the top surface of the contact film layer and the bottom surface of the contact film layer. The bottom surface of the contact film layer faces the upper film layer. The switch circuit includes an upper film layer, a spacer, and a lower film layer. The upper film layer includes a top surface, two first positioning holes, and a bottom surface. The first positioning hole connects the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer includes a top surface, two first positioning holes and a bottom surface, the first positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, the two hooks of the bottom plate sequentially pass through the two first positioning holes of the lower film layer, the two first positioning holes of the upper film layer and the two first positioning holes of the contact film layer, and then are placed in the two positioning grooves.

[0022] In some embodiments of the present invention, the transparent key module also includes a cover, which is arranged above the connection area. The cover has a connection frame and multiple openings, each opening corresponds to a keycap, and the keycap can be exposed from the opening of the cover. The connection frame has a top surface and a bottom surface, and multiple openings connect the top surface and the bottom surface. The cover also includes at least one protrusion, which extends downward from the bottom surface of the connection frame.

[0023] In some embodiments of the present invention, the connection area of ​​the elastic element has at least one positioning hole, the contact film layer includes a top surface, at least one second positioning hole, a bottom surface and at least one protruding structure, the protruding structure of the contact film layer is formed on the top surface of the contact film layer, the at least one second positioning hole of the contact film layer connects the top surface of the contact film layer and the bottom surface of the contact film layer, the bottom surface of the contact film layer faces the upper film layer, the switch circuit includes an upper film layer, a spacer and a lower film layer, the upper film layer includes a top surface, at least one second positioning hole and a bottom surface, the second positioning hole of the upper film layer connects the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer includes a top surface, at least one second positioning hole and a bottom surface and a bottom surface, the second positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer, for separating the upper film layer and the lower film layer, the bottom plate comprises a top surface, at least one positioning hole and a bottom surface, the top surface of the bottom plate faces the lower film layer, the positioning hole of the bottom plate connects the top surface of the bottom plate and the bottom surface of the bottom plate, the convex column of the face cover passes downwardly through the positioning hole of the connection area of ​​the elastic element, the second positioning hole of the contact film layer, the second positioning hole of the upper film layer and the second positioning hole of the lower film layer in sequence, and then extends into the positioning hole of the bottom plate, for clamping the elastic element, the contact film layer and the switch circuit between the face cover and the bottom plate.

[0024] In some embodiments of the present invention, the transparent key module further includes a sealing glue formed around the protruding column extending into the second opening of the bottom plate.

[0025] In some embodiments of the present invention, the protruding column extending into the second opening of the bottom plate can be formed into a rivet head through a riveting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of a control device provided according to a first embodiment of the present invention.

[0027] Figure 2 for Figure 1 Exploded view of the control device.

[0028] Figure 3 for Figure 2 In the control device, an exploded view of the button module can be seen through.

[0029] Figure 4 for Figure 2 A partial cross-sectional enlarged schematic diagram of a transparent key module obtained along the AA section line in the control device.

[0030] Figure 5 for Figure 2 In the control device, the button module can be seen through in a stereoscopic image from another viewing angle.

[0031] Figure 6 for Figure 3 In the see-through key module, the surface covers the three-dimensional image from another perspective.

[0032] Figure 7 for Figure 3 A three-dimensional image of the keycap and the elastic element in the transparent key module from another perspective.

[0033] Figure 8 for Figure 3 A three-dimensional image of the contact membrane layer in the transparent key module.

[0034] Fig. 9 for Figure 3 Exploded view of the switch circuit in the transparent button module.

[0035] Fig.10 for Figure 3 A three-dimensional image of the bottom plate in the see-through key module.

[0036] Fig.11 for Figure 2 In the control device, a cross-sectional view of the transparent key module is obtained along the BB section line.

[0037] Fig.12 for Fig.11 A partially enlarged schematic diagram of .

[0038] Fig.13 for Figure 2 A cross-sectional view of the transparent key module is obtained along the CC section line in the control device.

[0039] Fig.14 for Fig.13 A partially enlarged schematic diagram of .

[0040] Fig.15 It is a schematic diagram of fixing the boss of the cover in the positioning hole of the bottom plate by sealing glue.

[0041] Fig.16 A schematic diagram of the convex column of the cover being formed into a rivet head through a riveting process.

[0042] The reference numerals are as follows:

[0043] 1: Control device

[0044] 2: Shell

[0045] 3: Transparent button module

[0046] 31: Face cover

[0047] 311: Connection box

[0048] 3111: Top

[0049] 3112: Bottom surface

[0050] 312: Opening

[0051] 313: Boss

[0052] 314: Sealing

[0053] 315: Rivet head

[0054] 32: Keycaps

[0055] 321: Pressing surface

[0056] 322: Sidewall

[0057] 323: Bottom

[0058] 33: Elastic element

[0059] 331: Bearing part

[0060] 332: Sidewall

[0061] 333: Bottom

[0062] 3331: Connection Zone

[0063] 33311: Positioning hole

[0064] 3332: Outlying Area

[0065] 3333: Positioning slot

[0066] 33331: Opening

[0067] 334: Crater Structure

[0068] 3341: Cavity

[0069] 3342: First Opening

[0070] 3343: Second opening

[0071] 34: Contact film layer

[0072] 341: Top

[0073] 342: Light-transmitting opening

[0074] 343: Bottom surface

[0075] 344: Protruding structure

[0076] 345: First positioning hole

[0077] 346: Second positioning hole

[0078] 35: Switching circuit

[0079] 351: Upper film layer

[0080] 3511: Top

[0081] 3512: Light-transmitting opening

[0082] 3513: Bottom surface

[0083] 3514: Line contact

[0084] 3515: First positioning hole

[0085] 3516: Second positioning hole

[0086] 352: Spacer

[0087] 353: Lower film layer

[0088] 3531: Top

[0089] 3532: Light-transmitting opening

[0090] 3533: Bottom surface

[0091] 3534: Line contact

[0092] 3535: First positioning hole

[0093] 3536: Second positioning hole

[0094] 36: Bottom plate

[0095] 361: Top

[0096] 362: Light-transmitting opening

[0097] 363: Bottom

[0098] 364: Hook

[0099] 365: Positioning hole

[0100] 4: Display Panel

[0101] 41: Sub-display area

[0102] 42: Background area

[0103] 43: Graphics and images

[0104] 44: Non-graphic images DETAILED DESCRIPTION

[0105] The following embodiments are provided for detailed description. The embodiments are only used as examples and do not limit the scope of the invention. In addition, the drawings in the embodiments omit unnecessary elements or elements that can be completed by conventional techniques to clearly show the technical features of the invention.

[0106] The invention provides a see-through key module and a control device using the see-through key module.

[0107] Please refer to Figures 1 to 14 According to a first embodiment of the present invention, a control device 1 is provided. The control device 1 may be a live broadcast controller, a food ordering machine, an audio and video streaming controller, an image editing controller, a peripheral device controller, or a shortcut key controller.

[0108] The control device 1 includes a housing 2, a see-through key module 3 and a display panel 4. The see-through key module 3 and the display panel 4 can be accommodated in the housing 2. The control device 1 can also be provided with a processor, a signal processing device and a communication interface, which communicate and connect with the see-through key module 3 and the display panel 4 via signals.

[0109] The transparent key module 3 includes a cover 31 , a plurality of key caps 32 , an elastic element 33 , a contact film layer 34 , a switch circuit 35 and a bottom plate 36 .

[0110] The cover 31 has a connection frame 311 and a plurality of openings 312, wherein each opening 312 corresponds to a keycap 32 and allows the keycap 32 to be exposed from the opening 312. The connection frame 311 has a top surface 3111 and a bottom surface 3112, and the opening 312 connects the top surface 3111 and the bottom surface 3112. In addition, the cover includes at least one boss 313, and the boss 313 extends downward from the bottom surface 3112 of the connection frame 311.

[0111] The key cap 32 has a pressing surface 321, a side wall 322 and a bottom surface 323, wherein the side wall 322 is located between the pressing surface 321 and the bottom surface 323. The key cap 32 is a light-transmissive key cap, such as fully transparent or semi-transparent, so that the light generated by the display panel 4, such as graphic images, can directly pass through the key cap 32 upwards to be seen by the user.

[0112] The elastic element 33 is elastic and is used to provide elastic force for the key cap 32 to reciprocate up and down.

[0113] The elastic element 33 includes a plurality of supporting parts 331, a plurality of side walls 332 and a bottom 333. Each supporting part 331 is connected to a key cap 32, for example, connected and fixed to the side wall 322 or other parts of the key cap 32.

[0114] The side wall 332 is located between the supporting portion 331 and the bottom 333. The bottom 333 has a connection area 3331 and a peripheral area 3332. The side walls are located in the connection area 3331, and the peripheral area 3332 surrounds the connection area 3331. The bottom 333 is provided with at least one positioning hole 33311 in the connection area 3331. The bottom 333 is provided with at least one positioning groove 3333 in the peripheral area 3332, and the opening 33331 of the positioning groove 333 faces downward to the bottom plate 36.

[0115] The bearing portion 331 of the elastic element 33 and the corresponding side wall 332 and bottom 333 form a crater structure 334 from top to bottom. The center of the crater structure 334 is a cavity 3341. The cavity 3341 has a first opening 3342 and a second opening 3343. The first opening 3342 and the second opening 3343 are located at opposite ends. The first opening 3342 is adjacent to the keycap 32 and is formed by being surrounded by the bearing portion 331. The second opening 3342 is adjacent to the contact film layer 34 and the switch circuit 35 below and is formed by the bottom 333.

[0116] The contact film layer 34 is disposed below the elastic element 33. The contact film layer 34 includes a top surface 341, a plurality of light-transmitting openings 342, a bottom surface 343, at least one protruding structure 344, at least one first positioning hole 345, and at least one second positioning hole 346. The protruding structure 344 is formed on the top surface 341 as a contact point for pressing, and the protruding structure 344 is adjacent to the light-transmitting opening 342. The light-transmitting opening 342, the first positioning hole 345, and the second positioning hole 346 connect the top surface 341 and the bottom surface 343. The bottom surface 343 of the contact film layer 34 is an upper film layer 351 facing the switch circuit 35.

[0117] The switch circuit 35 is disposed below the elastic element 33 and the contact film layer 34 . The switch circuit 35 includes an upper film layer 351 , a spacer 352 and a lower film layer 353 .

[0118] The upper film layer 351 includes a top surface 3511, a plurality of light-transmitting openings 3512, a bottom surface 3513, at least one first positioning hole 3515, and at least one second positioning hole 3516. The light-transmitting openings 3512, the first positioning holes 3515, and the second positioning holes 3516 connect the top surface 3511 and the bottom surface 3513. The bottom surface 3513 of the upper film layer 351 faces the lower film layer 353. In addition, the upper film layer 351 includes a circuit contact 3514, which is formed on the bottom surface 3513 of the upper film layer 351 and is adjacent to the light-transmitting openings 3512.

[0119] The lower film layer 353 includes a top surface 3531, a plurality of light-transmitting openings 3532, a bottom surface 3533, at least one first positioning hole 3535, and at least one second positioning hole 3536. The light-transmitting openings 3532, the first positioning holes 3535, and the second positioning holes 3536 connect the top surface 3531 and the bottom surface 3533. The top surface 3531 of the lower film layer 353 faces the upper film layer 351. In addition, the lower film layer 353 includes a circuit contact 3534, which is formed on the top surface 3531 of the lower film layer 353 and is adjacent to the light-transmitting openings 3532.

[0120] The spacer 352 is disposed between the bottom surface 3513 of the upper film layer 351 and the top surface 3531 of the lower film layer 353 to separate the upper film layer 351 from the lower film layer 353. The spacer 352 can be made of ink, such as printing ink, hot baking ink, quick-drying ink, or moisture curing ink, or can be made of a spacer film layer, all of which can be specifically implemented according to the present invention. In addition, the circuit contacts 3514 of the upper film layer 351 and the circuit contacts 3534 of the lower film layer 353 overlap in the vertical direction, and the circuit contacts 3514 of the upper film layer 351 and the circuit contacts 3534 of the lower film layer 353 can be separated by the spacer 352.

[0121] Furthermore, the range of the light-transmitting opening 3512 of the upper film layer 351 is smaller than the range of the second opening 3343 of the crater structure 334, and the range of the light-transmitting opening 3532 of the lower film layer 353 is also smaller than the range of the second opening 3343 of the crater structure 334. In this way, when the user presses down the keycap 32, the supporting portion 331 of the elastic element 33 or the keycap 32 can pass through the second opening 3343 of the crater structure 334 and press onto the contact film layer 34 and the upper film layer 351, thereby making the circuit contact 3514 of the upper film layer 351 contact the circuit contact 3534 of the lower film layer 353. Afterwards, the switch circuit 35 can convert the user's pressing action into a pressing signal and transmit it to the control circuit or the main board of the control device 1.

[0122] The bottom plate 36 is disposed below the switch circuit 35, and includes a top surface 361, a plurality of light-transmitting openings 362, a bottom surface 363, at least one hook 364, and a positioning hole 365. The top surface of the bottom plate 36 faces the lower film layer 353, and the light-transmitting opening 362 connects the top surface 361 and the bottom surface 363. The material of the bottom plate 36 can be selected from metal or plastic, such as cold-rolled steel sheet (SPCC), galvanized steel sheet (SECC) or aluminum sheet, or plastic sheet such as polycarbonate (PC), polyester film (Mylar), ABS, etc.

[0123] In addition, the range of the light-transmitting opening 362 of the bottom plate 36 is smaller than or equal to the range of the light-transmitting opening 3532 of the lower film layer 353, and in the vertical direction, the light-transmitting opening 362 of the bottom plate 36 is aligned with the light-transmitting opening 3532 of the lower film layer 353. In this way, when the user performs a pressing action so that the circuit contact 3514 of the upper film layer 351 triggers the circuit contact 3534 of the lower film layer 353, the top surface 361 of the bottom plate 36 can support the lower film layer 353, so that the pressing action can be truly performed, and because of the protection of the bottom plate 36, the user's pressing action will not touch or affect the display panel 4 below, so as to avoid the display panel 4 from generating interference patterns.

[0124] In addition to providing support for the switch circuit below, the bottom plate 36 provided by the present invention also has a positioning function. For example, the hook 361 of the bottom plate 36 can pass through the switch circuit 35 and the contact film layer 34 upwards and then be placed in the positioning groove 3333 of the elastic element 33 through the opening 33331, so as to fix the contact film layer 34 and the switch circuit 35 between the elastic element 33 and the bottom plate 36, and can also simultaneously complete the structural alignment of the four elements of the elastic element 33, the contact film layer 34, the switch circuit 35 and the bottom plate 36. The design of the bottom plate 36 and the elastic element 33 provided in this embodiment can simplify the originally complicated alignment process between the components of each layer, and of course it can also speed up the assembly of the entire transparent key module 3.

[0125] Specifically, the hook 364 of the bottom plate 36 passes through the first positioning hole 3535 of the lower film layer 353 , the first positioning hole 3515 of the upper film layer 351 , and the first positioning hole 345 of the contact film layer 34 in sequence from bottom to top, and is then placed into the positioning groove 3333 through the opening 33331 of the elastic element 33 .

[0126] In addition, the number of hooks 364 on the bottom plate 36 can be at least one or more. For example, when the number of hooks 364 is two, the two hooks 364 can be set on opposite sides of the bottom plate 36, such as the front and back sides or the left and right sides. Correspondingly, two positioning grooves 3333 of the elastic element 33 are also set correspondingly and arranged on opposite sides of the peripheral area 3332, and the number of the first positioning holes 345 of the contact film layer 34, the first positioning holes 3515 of the upper film layer 351 and the first positioning holes 3535 of the lower film layer 353 are also set two and set on opposite sides. The two hooks 364 of the bottom plate 36 can be placed in the two positioning grooves 3333 of the elastic element 33 after passing through the two second positioning holes 3535 of the lower film layer 353, the two first positioning holes 3516 of the upper film layer 351 and the two first positioning holes 345 of the contact film layer 34 in sequence from bottom to top.

[0127] Similarly, the number of hooks 364 on the bottom plate 36 can also be four, and they are arranged on the front and back sides and the left and right sides of the bottom plate 36, and the number and position of the first positioning hole 345 of the contact film layer 34, the first positioning hole 3515 of the upper film layer 351 and the first positioning hole 3535 of the lower film layer 353 will also be adjusted accordingly.

[0128] In addition, the transparent key module 3 provided by the present invention can also sandwich the elastic element 33, the contact membrane layer 34 and the switch circuit 35 between the cover 31 and the bottom plate 36 through cooperation between the two, and complete the assembly of the entire transparent key module 3.

[0129] The cover 31 is disposed above the connection area 3331 of the bottom 333 of the elastic element 33. When the transparent key module 3 is assembled, the protrusion 313 of the cover 31 passes downward through the positioning hole 33311 of the elastic element 33, the second positioning hole 346 of the contact film layer 34, the second positioning hole 3516 of the upper film layer 351 and the second positioning hole 3536 of the lower film layer 353, and then is inserted into the positioning hole 365 of the bottom plate 36. In this way, the elastic element 33, the contact film layer 34 and the switch circuit 35 can be clamped between the cover 31 and the bottom plate 36 to achieve a modular design.

[0130] When the protrusion 313 of the cover 31 is inserted into the positioning hole 365 of the bottom plate 36, the present invention also provides several fixing mechanisms to fix the cover 31 and the bottom plate 36 together. Fig.15 In the present invention, a sealing glue 314 may be formed around the boss 313 passing through the positioning hole 365, thereby fixing the boss 313 and the positioning hole 365 together. Fig.16 As shown, a rivet head 315 is formed at the end of the protrusion 313 passing through the positioning hole 365 through a riveting process. The riveting process can be selected from hot press riveting, hot air riveting or ultrasonic riveting.

[0131] Furthermore, the bottom plate 36 provided by the present invention has a concave structure around the positioning hole 365, that is, the bottom plate 36 is folded or tilted toward the switch circuit 35 in the area adjacent to the positioning hole 365. The concave structure of the positioning hole 365 helps to accommodate the sealing glue 314 or the rivet head 315, while keeping the bottom surface 363 of the bottom plate 36 flat.

[0132] The display area of ​​the display panel 4 is divided into a plurality of sub-display areas 41 and a background area 42, wherein the background area 42 is an area outside the sub-display area 41, which is used to separate adjacent sub-display areas 41 and to provide a clearer boundary between the sub-display areas 41. The display panel 4 outputs or displays a graphic image 43 in the sub-display area 41. The graphic image 43 includes a specific picture, information or icon, which can also be set, controlled and changed by the user. In addition, the display panel 4 displays a non-graphic image 44 in the background area 42, such as a background color, or does not generate light and does not display any image.

[0133] In the control device 1 provided in this embodiment, the see-through key module 3 is arranged above the display panel 4, and the see-through key module 3 will shield the non-graphic image 44 in the vertical direction and reveal the graphic image 43. The graphic image 43 output by the display panel 4 will directly pass through the light-transmitting opening 362 of the bottom plate 36, the light-transmitting opening 3532 of the lower film layer 353, the light-transmitting opening 3512 of the upper film layer 351, the light-transmitting opening 342 of the contact film layer 34, the second opening 3343 of the crater structure, the first opening 3342 of the crater structure and the keycap 32, and then be revealed and directly seen by the user. The graphic image 43 output by the display panel 4 will not be blocked or obstructed during the transmission process, and will directly pass through the light-transmitting opening 362 of the base plate 36, the light-transmitting opening 3532 of the lower film layer 353, the light-transmitting opening 3512 of the upper film layer 351, the light-transmitting opening 342 of the contact film layer 34, the second opening 3343 of the crater structure, and the first opening 3342 of the crater structure. When the graphic image 43 passes through the keycap 32, the graphic image 43 can be completely transmitted upward without being blocked by the keycap 32. This is different from the design of the existing backlit keyboard that the keycap can only emit light in the character area but does not provide a light-shielding coating to block the character area.

[0134] In the control device 1 provided by the present invention, the display panel 4 matched with the transparent key structure 3 can be selected from a liquid crystal display panel (LCD) or an organic light emitting diode (OLED) panel, or can also be selected from a panel belonging to the electronic paper type, such as an electrophoretic display (EPD) panel or a cholesterol liquid crystal (ChLCD) panel.

[0135] In the see-through key module provided according to other embodiments of the present invention, the contact film layer 34 may not be provided. In this structure, the elastic element 33 directly contacts the switch circuit 35 below.

[0136] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any other equivalent changes or modifications that do not deviate from the spirit disclosed in the present invention should be included in the inventive concept of the present invention.

Claims

1. A transparent key module, comprising: Multiple keycaps; An elastic element, the elastic element comprising a plurality of bearing parts, a plurality of side walls and a bottom, wherein each of the bearing parts is connected to a key cap, the side wall is located between the bearing part and the bottom, the bottom has a connection area and a peripheral area, the plurality of side walls are located in the connection area, the peripheral area surrounds the connection area, and the bottom is provided with at least one positioning groove in the peripheral area; A switch circuit is arranged below the elastic element; as well as A bottom plate is arranged below the switch circuit. The bottom plate has at least one hook. The hook can pass through the switch circuit upwards and then be placed in the positioning groove to fix the switch circuit between the elastic element and the bottom plate.

2. The transparent key module as claimed in claim 1, wherein the supporting portion and the corresponding side wall and the bottom together form a crater structure from top to bottom, and the center of the crater structure is a cavity.

3. The transparent key module as described in claim 2, wherein the cavity has a first opening and a second opening, the first opening and the second opening are located at opposite ends, the first opening is adjacent to the keycap, and the second opening is adjacent to the switch circuit.

4. The see-through key module as described in claim 3, wherein the switch circuit comprises an upper film layer, a spacer and a lower film layer, the upper film layer comprises a top surface, a plurality of light-transmitting openings and a bottom surface, the plurality of light-transmitting openings of the upper film layer connect the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer comprises a top surface, a plurality of light-transmitting openings and a bottom surface, the plurality of light-transmitting openings of the lower film layer connect the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, the upper film layer further comprises a circuit contact, the circuit contact of the upper film layer is formed on the bottom surface of the upper film layer The lower film layer also includes a circuit contact, the circuit contact of the lower film layer is formed on the top surface of the lower film layer, the circuit contact of the upper film layer overlaps with the circuit contact of the lower film layer in the vertical direction, and the circuit contact of the upper film layer is separated from the circuit contact of the lower film layer by the spacer, the circuit contact of the upper film layer is adjacent to the light-transmitting opening of the upper film layer, the circuit contact of the lower film layer is adjacent to the light-transmitting opening of the lower film layer, the range of the light-transmitting opening of the upper film layer is smaller than the range of the second opening of the crater structure, the range of the light-transmitting opening of the lower film layer is smaller than the range of the second opening of the crater structure, the bearing part or the keycap can be pressed onto the upper film layer after passing downward through the second opening of the crater structure, so that the circuit contact of the upper film layer contacts the circuit contact of the lower film layer.

5. The see-through key module as described in claim 4, wherein the base plate comprises a top surface, a plurality of light-transmitting openings and a bottom surface, the top surface of the base plate faces the lower film layer, the plurality of light-transmitting openings of the base plate connect the top surface of the base plate and the bottom surface of the base plate, the range of the light-transmitting openings of the base plate is less than or equal to the range of the light-transmitting openings of the lower film layer, and in the vertical direction, the light-transmitting openings of the base plate are aligned with the light-transmitting openings of the lower film layer, so that when the circuit contacts of the upper film layer trigger the circuit contacts of the lower film layer, the top surface of the base plate supports the lower film layer.

6. The transparent key module as described in claim 1, wherein the switch circuit comprises an upper film layer, a spacer and a lower film layer, the upper film layer comprises a top surface, at least one first positioning hole and a bottom surface, the first positioning hole of the upper film layer connects the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer comprises a top surface, at least one first positioning hole and a bottom surface, the first positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, and the hook of the bottom plate sequentially passes through the first positioning hole of the lower film layer and the first positioning hole of the upper film layer upward and is placed in the positioning groove.

7. The transparent key module as described in claim 1, wherein the number of the positioning grooves is two, and the two positioning grooves are located at two opposite ends of the peripheral area; the number of the hooks is two, and the two hooks are located at two opposite ends of the bottom plate; the switch circuit comprises an upper film layer, a spacer and a lower film layer, the upper film layer comprises a top surface, two first positioning holes and a bottom surface, the first positioning hole of the upper film layer connects the top surface of the upper film layer and the bottom surface of the upper film layer, and the bottom surface of the upper film layer faces the lower film layer, the lower film layer comprises a top surface, two first positioning holes and a bottom surface, the first positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, and the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, and the two hooks of the bottom plate pass upward through the two first positioning holes of the lower film layer and the two first positioning holes of the upper film layer and are placed in the two positioning grooves.

8. The transparent key module as described in claim 1 further includes a cover, which is arranged above the connecting area, and the cover has a connecting frame and a plurality of openings, each opening corresponds to a keycap, and the keycap can be exposed from the opening of the cover, the connecting frame has a top surface and a bottom surface, the plurality of openings connect the top surface and the bottom surface, and the cover also includes at least one boss, which extends downward from the bottom surface of the connecting frame.

9. The see-through key module as claimed in claim 8, wherein the connection area of ​​the elastic element has at least one positioning hole, the switch circuit comprises an upper film layer, a spacer and a lower film layer, the upper film layer comprises a top surface, at least one second positioning hole and a bottom surface, the second positioning hole of the upper film layer connects the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer comprises a top surface, at least one second positioning hole and a bottom surface, the second positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, and the top surface of the lower film layer is facing the lower film layer Towards the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, the bottom plate includes a top surface, at least one positioning hole and a bottom surface, the top surface of the bottom plate faces the lower film layer, the positioning hole of the bottom plate connects the top surface of the bottom plate and the bottom surface of the bottom plate, the convex column of the surface cover passes downwardly through the positioning hole of the connecting area of ​​the elastic element, the second positioning hole of the upper film layer and the second positioning hole of the lower film layer in sequence, and then extends into the positioning hole of the bottom plate, so as to clamp the elastic element and the switch circuit between the surface cover and the bottom plate. 10 . The see-through key module as claimed in claim 9 , further comprising a sealing glue formed around the protruding column extending into the positioning hole of the bottom plate. 11 . The see-through key module as claimed in claim 9 , wherein the protrusion extending into the bottom plate positioning hole can be formed into a rivet head through a riveting process.

12. A transparent key module, comprising: Multiple keycaps; An elastic element, the elastic element comprising a plurality of bearing parts, a plurality of side walls and a bottom, wherein each of the bearing parts is connected to a key cap, the side wall is located between the bearing part and the bottom, the bottom has a connection area and a peripheral area, the plurality of side walls are located in the connection area, the peripheral area surrounds the connection area, and the bottom is provided with at least one positioning groove in the peripheral area; A contact film layer is disposed below the elastic element; A switch circuit is arranged below the contact film layer; as well as A bottom plate is arranged below the switch circuit, and the bottom plate has at least one hook, which can pass through the switch circuit and the contact film layer in sequence upwards and then be placed in the positioning groove to fix the contact film layer and the switch circuit between the elastic element and the bottom plate.

13. The transparent key module as described in claim 12, the supporting part and the corresponding side wall and the bottom together form a crater structure from top to bottom, the center of the crater structure is a cavity, the cavity has a first opening and a second opening, the first opening and the second opening are located at opposite ends, the first opening is adjacent to the keycap, and the second opening is adjacent to the contact membrane layer.

14. The see-through key module as claimed in claim 13, wherein the contact film layer comprises a top surface, a plurality of light-transmitting openings, a bottom surface and at least one protruding structure, the protruding structure of the contact film layer is formed on the top surface of the contact film layer, and the protruding structure of the contact film layer is adjacent to the light-transmitting opening, the plurality of light-transmitting openings of the contact film layer connect the top surface of the contact film layer and the bottom surface of the contact film layer, the bottom surface of the contact film layer faces the upper film layer, the switch circuit comprises an upper film layer, a spacer and a lower film layer, the upper film layer comprises a top surface, The invention relates to a plurality of light-transmitting openings and a bottom surface, wherein the plurality of light-transmitting openings of the upper film layer are connected to the top surface of the upper film layer and the bottom surface of the upper film layer, and the bottom surface of the upper film layer faces the lower film layer, and the lower film layer comprises a top surface, a plurality of light-transmitting openings and a bottom surface, wherein the plurality of light-transmitting openings of the lower film layer are connected to the top surface of the lower film layer and the bottom surface of the lower film layer, and the top surface of the lower film layer faces the upper film layer, and the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, and the upper film layer comprises ... The film layer also includes a circuit contact, the circuit contact of the upper film layer is formed on the bottom surface of the upper film layer, the lower film layer also includes a circuit contact, the circuit contact of the lower film layer is formed on the top surface of the lower film layer, the protruding structure of the contact film layer, the circuit contact of the upper film layer and the circuit contact of the lower film layer overlap in the vertical direction, and the circuit contact of the upper film layer is separated from the circuit contact of the lower film layer by the spacer, the circuit contact of the upper film layer is adjacent to the light-transmitting opening of the upper film layer, and the circuit contact of the lower film layer is adjacent to the light-transmitting opening of the lower film layer. The light-transmitting opening of the lower film layer and the light-transmitting opening of the contact film layer are smaller than the range of the second opening of the crater structure, the light-transmitting opening of the upper film layer is smaller than the range of the second opening of the crater structure, and the light-transmitting opening of the lower film layer is smaller than the range of the second opening of the crater structure. The supporting part or the keycap can pass downward through the second opening of the crater structure and press onto the protruding structure of the contact film layer, and the protruding structure further presses the upper film layer, causing the circuit contacts of the upper film layer to contact the circuit contacts of the lower film layer.

15. The see-through key module as described in claim 14, wherein the base plate comprises a top surface, a plurality of light-transmitting openings and a bottom surface, the top surface of the base plate faces the lower film layer, the plurality of light-transmitting openings of the base plate connect the top surface of the base plate and the bottom surface of the base plate, the range of the light-transmitting openings of the base plate is less than or equal to the range of the light-transmitting openings of the lower film layer, and in the vertical direction, the light-transmitting openings of the base plate are aligned with the light-transmitting openings of the lower film layer, so that when the circuit contacts of the upper film layer trigger the circuit contacts of the lower film layer, the top surface of the base plate supports the lower film layer.

16. The see-through key module as claimed in claim 12, wherein the contact film layer comprises a top surface, at least one first positioning hole, a bottom surface and at least one protruding structure, the protruding structure of the contact film layer is formed on the top surface of the contact film layer, the at least one first positioning hole of the contact film layer connects the top surface of the contact film layer and the bottom surface of the contact film layer, the bottom surface of the contact film layer faces the upper film layer, the switch circuit comprises an upper film layer, a spacer and a lower film layer, the upper film layer comprises a top surface, at least one first positioning hole and a bottom surface, the first positioning hole of the upper film layer connects the top surface of the upper film layer with and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, the lower film layer includes a top surface, at least one first positioning hole and a bottom surface, the first positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer, the hook of the bottom plate passes through the first positioning hole of the lower film layer, the first positioning hole of the upper film layer and the first positioning hole of the contact film layer in sequence upward and is placed in the positioning groove.

17. The see-through key module as described in claim 12, wherein the number of the positioning grooves is two, and the two positioning grooves are located at two opposite ends of the peripheral area, the number of the hooks is two, and the two hooks are located at two opposite ends of the bottom plate, the contact film layer includes a top surface, two first positioning holes, a bottom surface and at least one protruding structure, the protruding structure of the contact film layer is formed on the top surface of the contact film layer, the first positioning hole of the contact film layer connects the top surface of the contact film layer and the bottom surface of the contact film layer, the bottom surface of the contact film layer faces the upper film layer, the switch circuit includes an upper film layer, a spacer and a lower film layer, the upper film layer includes a top surface, two first positioning holes and a bottom surface, the The first positioning hole of the upper film layer connects the top surface of the upper film layer and the bottom surface of the upper film layer, and the bottom surface of the upper film layer faces the lower film layer. The lower film layer includes a top surface, two first positioning holes and a bottom surface. The first positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, and the top surface of the lower film layer faces the upper film layer. The spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer to separate the upper film layer and the lower film layer. The two hooks of the bottom plate sequentially pass through the two first positioning holes of the lower film layer, the two first positioning holes of the upper film layer and the two first positioning holes of the contact film layer and are then placed in the two positioning grooves.

18. The transparent key module as described in claim 12 further includes a cover, which is arranged above the connecting area, and the cover has a connecting frame and a plurality of openings, each opening corresponds to a keycap, and the keycap can be exposed from the opening of the cover, the connecting frame has a top surface and a bottom surface, the plurality of openings connect the top surface and the bottom surface, and the cover also includes at least one boss, which extends downward from the bottom surface of the connecting frame.

19. The see-through key module as described in claim 18, wherein the connection area of ​​the elastic element has at least one positioning hole, the contact film layer includes a top surface, at least one second positioning hole, a bottom surface and at least one protruding structure, the protruding structure of the contact film layer is formed on the top surface of the contact film layer, the at least one second positioning hole of the contact film layer connects the top surface of the contact film layer and the bottom surface of the contact film layer, the bottom surface of the contact film layer faces the upper film layer, the switch circuit includes an upper film layer, a spacer and a lower film layer, the upper film layer includes a top surface, at least one second positioning hole and a bottom surface, the second positioning hole of the upper film layer connects the top surface of the upper film layer and the bottom surface of the upper film layer, the bottom surface of the upper film layer faces the lower film layer, and the lower film layer includes a top surface, at least one second positioning hole and A bottom surface, the second positioning hole of the lower film layer connects the top surface of the lower film layer and the bottom surface of the lower film layer, the top surface of the lower film layer faces the upper film layer, the spacer is arranged between the bottom surface of the upper film layer and the top surface of the lower film layer, and is used to separate the upper film layer and the lower film layer, the bottom plate comprises a top surface, at least one positioning hole and a bottom surface, the top surface of the bottom plate faces the lower film layer, the positioning hole of the bottom plate connects the top surface of the bottom plate and the bottom surface of the bottom plate, the convex column of the surface cover passes downward in sequence through the positioning hole of the connecting area of ​​the elastic element, the second positioning hole of the contact film layer, the second positioning hole of the upper film layer and the second positioning hole of the lower film layer, and then extends into the positioning hole of the bottom plate, so as to clamp the elastic element, the contact film layer and the switch circuit between the surface cover and the bottom plate. 20 . The see-through key module as claimed in claim 19 , further comprising a sealing glue formed around the protruding column extending into the second opening of the bottom plate.

21. The see-through key module as claimed in claim 19, wherein the protruding column extending into the second opening of the bottom plate can be formed into a rivet head through a riveting process.

Images