A metal substrate flexible copper-clad double-sided circuit board luminous keyboard module

Abstract

The invention discloses a metal substrate flexible copper clad double-sided circuit board luminous keyboard module. The luminous keyboard module comprises a double-sided circuit board, a trigger layer, a light guide film, an elastic conductive member, an LED lamp and a key cap. The trigger layer is arranged on the double-sided circuit board, a conductive contact is arranged below the trigger layer at a position corresponding to the double-sided circuit board, a conductive pressing point is arranged above the trigger layer at a position corresponding to the conductive contact, the LED lamp is mounted on the double-sided circuit board and arranged at a position corresponding to the key cap, a first through hole is arranged at a position of the trigger layer corresponding to the LED lamp, the light guide film is arranged above the trigger layer, a second through hole is arranged at a position corresponding to the first through hole, the LED lamp is mounted in the first through hole and the second through hole, a third through hole is arranged at a position corresponding to the conductive pressing point of the light guide film, the elastic conductive member is arranged at a position corresponding to the third through hole, the key cap is arranged above the elastic conductive member, and the structural stability of the luminous keyboard module is effectively enhanced by supporting the double-sided circuit board with a supporting structure, so as to ensure that the entire luminous keyboard module is stable during use.

Description

Technical Field

[0001] The invention relates to a luminous keyboard module, in particular to a metal substrate flexible copper-clad double-sided circuit board luminous keyboard module, which is applied to the technical field of computer peripheral equipment. Background Art

[0002] The keyboard is the most commonly used and most important input device. Through the keyboard, English letters, Chinese characters, numbers, punctuation marks, etc. can be input into the computer, so as to issue commands to the computer, input data, etc. It can be said that since the day when the computer was born, the keyboard has been one of the indispensable peripheral devices of the computer.

[0003] With the continuous development of keyboards, in order to make the keyboard have better use effect, the luminous keyboard originated from the ordinary keyboard. In order to meet the different usage needs of more users, the luminous keyboard came into being. The keycaps are designed as a light-transmitting structure, and the light emitted by the luminous keyboard module is used to illuminate the keycaps. On the one hand, it is more suitable for night input and it is convenient to see the words on the keycaps. On the other hand, it will also produce a cooler effect.

[0004] During the production process of existing luminous keyboard modules, a part of them adopts single-sided circuit boards. However, the existing single-sided circuit boards can no longer meet the functional requirements of luminous keyboards. Therefore, the other part adopts double-sided circuit boards. However, during the use of double-sided circuit boards in existing luminous keyboards, the luminous keyboard modules are prone to bending and damage after long-term use, which affects the user experience and reduces the product's life cycle. Summary of the invention

[0005] In view of the problem that some of the luminous keyboards in the prior art mentioned above that use double-sided circuit boards are prone to bending and damage after long-term use, thus affecting the service life of the product, the present invention provides a luminous keyboard module with a metal substrate flexible copper-clad double-sided circuit board. By using a double-sided circuit board with a supporting structure, the structural stability of the luminous keyboard module is effectively enhanced by supporting the supporting structure during the use of the luminous keyboard, thereby ensuring that the entire luminous keyboard module is stable during use.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a metal substrate flexible copper clad double-sided circuit board luminous keyboard module, the luminous keyboard module includes a double-sided circuit board, a trigger layer, a light guide film, an elastic conductive member, an LED lamp and a keycap, the trigger layer is arranged on the double-sided circuit board, a conductive contact is arranged below the trigger layer corresponding to the position of the double-sided circuit board, a conductive press point is arranged above the trigger layer corresponding to the position of the conductive contact, the LED lamp is installed on the double-sided circuit board and arranged corresponding to the keycap, the trigger layer is provided with a first through hole corresponding to the position of the LED lamp, the light guide film is arranged above the trigger layer, the light guide film is provided with a second through hole corresponding to the position of the first through hole, the LED lamp is installed in the first through hole and the second through hole, the light guide film is provided with a third through hole corresponding to the position of the conductive press point, the elastic conductive member is arranged at the position corresponding to the third through hole, and the keycap is arranged above the elastic conductive member.

[0007] Furthermore, the double-sided circuit board includes a supporting structure, a first insulating layer, a first circuit layer, a second insulating layer and a second circuit layer, the first insulating layer is arranged on the supporting structure, the first circuit layer is arranged on the first insulating layer, the second insulating layer is arranged on the first circuit layer, the second insulating layer is provided with a fourth through hole corresponding to the position of the first circuit layer, the second circuit layer is arranged on the second insulating layer, and the second circuit layer is connected to the first circuit layer through the fourth through hole.

[0008] Furthermore, an extension portion is provided on the second circuit layer at a position corresponding to the fourth through hole, and the extension portion is placed in the fourth through hole and connected to the first circuit board.

[0009] Furthermore, the circuit board further comprises a protective layer, the protective layer is arranged on the second circuit layer, a fifth through hole is arranged on the protective layer at a position corresponding to the fourth through hole, and the extension portion is placed in the fifth through hole.

[0010] Furthermore, the first insulating layer is fixedly installed with the first circuit layer by a first adhesive layer, and the thickness of the first insulating layer is 0.02mm-0.05mm; the second insulating layer is fixedly installed with the first circuit layer by a second adhesive layer, and the thickness of the second insulating layer is 0.02mm-0.05mm.

[0011] Furthermore, a composite film is arranged above the light-guiding film, the thickness of the composite film is 0.020-0.30 mm, white ink is arranged on the lower layer of the composite film, black ink is arranged on the upper layer of the composite film, white ink and black ink are not arranged at the positions of the composite film corresponding to the keycaps, or openings are arranged at the positions of the composite film corresponding to the keycaps.

[0012] Furthermore, the supporting structure is made of steel sheet, and the thickness of the steel sheet is 0.10mm to 0.25mm.

[0013] Furthermore, the conduction dots are made of silver paste or carbon paste.

[0014] Furthermore, the elastic conductive member is a spring sheet, which is installed on the trigger layer; or the spring sheet is installed on the light guide film; or the spring sheet is installed on the composite film.

[0015] Furthermore, a scissor foot is installed between the key cap and the elastic conductive member, and the key cap and the scissor foot are respectively installed on the supporting structure.

[0016] Beneficial effects of the invention: The invention provides a metal-based flexible copper-clad double-sided circuit board luminous keyboard module, which adopts a double-sided circuit board with a supporting structure. During the use of the luminous keyboard, the supporting structure is used to support the luminous keyboard module to effectively enhance the structural stability of the luminous keyboard module, thereby ensuring that the entire luminous keyboard module is stable during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the exploded structure of the metal substrate flexible copper-clad double-sided circuit board luminous keyboard module provided by the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the double-sided circuit board provided by the present invention;

[0019] Figure 3 is a schematic diagram of the top view structure of the trigger layer provided by the present invention;

[0020] Figure 4 It is a schematic diagram of the top structure of the double-sided circuit board provided by the present invention.

[0021] Figure numerals: 1-support structure, 2-first insulating layer, 3-first adhesive layer, 4-first circuit layer, 5-second adhesive layer, 6-second insulating layer, 61-fourth through hole, 7-second circuit layer, 71-extension portion, 8-protective layer, 81-fifth through hole, 9-trigger layer, 91-conduction point, 92-first through hole, 10-light guide film, 101-second through hole, 102-third through hole, 11-composite film, 12-scissor foot, 13-key cap, 14-elastic conductive part, 15-LED lamp. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] See also Figure 1-4The present invention provides a metal substrate flexible copper clad double-sided circuit board luminous keyboard module, the luminous keyboard module includes a double-sided circuit board, a trigger layer 9, a light guide film 10, an elastic conductive member 14, an LED lamp 15 and a key cap 13, the trigger layer 9 is arranged on the double-sided circuit board, a conductive contact is arranged below the trigger layer 9 at a position corresponding to the double-sided circuit board, a conductive press point 91 is arranged above the trigger layer 9 at a position corresponding to the conductive contact, wherein the conductive press point 91 adopts a silver paste point or a carbon paste point, and the LED lamp 15 is installed on the double-sided circuit board and corresponds to the key cap 13. The trigger layer 9 is provided with a first through hole 92 at a position corresponding to the LED lamp 15, the light guide film 10 is provided above the trigger layer 9, the light guide film 10 is provided with a second through hole 101 at a position corresponding to the first through hole 92, the LED lamp 15 is installed in the first through hole 92 and the second through hole 101, so that the light emitted by the LED lamp 15 can illuminate the corresponding keycap 13, the light guide film 10 is provided with a third through hole 102 at a position corresponding to the conduction point 91, the elastic conductive member 14 is provided at a position corresponding to the third through hole 102, and the keycap 13 is provided above the elastic conductive member 14. In a specific implementation, the keycap 13, the scissor foot 12 and other components are provided above the double-sided circuit board, and the double-sided circuit board is used to support the light-emitting keyboard module to effectively enhance the structural stability, and ensure the stability of the entire light-emitting keyboard during use.

[0024] In this embodiment, in order to ensure the structural stability of the double-sided circuit board, the double-sided circuit board includes a support structure 1, a first insulating layer 2, a first circuit layer 4, a second insulating layer 6 and a second circuit layer 7. The first insulating layer 2 is arranged on the support structure 1, the first circuit layer 4 is arranged on the first insulating layer 2, the second insulating layer 6 is arranged on the first circuit layer 4, the second insulating layer 6 is provided with a fourth through hole 61 corresponding to the position of the first circuit layer 4, the second circuit layer 7 is arranged on the second insulating layer 6, and the second circuit layer 7 is connected to the first circuit layer 4 through the fourth through hole 61. By adopting the support structure 1, the overall stability of the double-sided circuit board is effectively increased, and the service life of the existing luminous keyboard is increased. In this embodiment, the thickness of the first circuit layer 4 and the second circuit layer 7 are respectively 0.05 to 0.12 mm, which can ensure the normal use of electronic devices and can also effectively control the thickness of the double-sided circuit board, making the double-sided circuit board thinner. In this embodiment, the first circuit layer 4 and the second circuit layer 7 are copper foil circuits, which can be formed by etching, silk screen printing or pasting.

[0025] In this embodiment, an extension portion 71 is provided on the second circuit layer 7 at a position corresponding to the fourth through hole 61, and the extension portion 71 is placed in the fourth through hole 61 and connected to the first circuit board. The extension portion 71 is preferably a copper block formed by chemical copper plating on the second circuit layer 7, connecting the first circuit layer and the second circuit layer.

[0026] In this embodiment, in order to prevent short circuit and avoid oxidation corrosion of the second circuit board 7, the circuit board also includes a protective layer 8. The protective layer 8 is made of polyimide film or polyester film. The protective layer 8 is arranged on the second circuit layer 7. A fifth through hole 81 is provided on the protective layer 8 corresponding to the position of the fourth through hole 61. The extension portion 71 is placed in the fifth through hole 81. By using the fifth through hole 81, the normal use of the double-sided circuit board is not affected. In this embodiment, the thickness of the protective layer 8 is 0.01mm~0.04mm, preferably 0.02nm.

[0027] In this embodiment, the first insulating layer 2 is fixedly installed together with the first circuit layer 4 by using the first adhesive layer 3; the second insulating layer 6 is fixedly installed together with the first circuit layer 4 by using the second adhesive layer 5. The first adhesive layer 3 and the second adhesive layer 5 are preferably glue for easy processing. In specific implementation, materials such as self-adhesive tape can also be used. It should be noted that, according to different application scenarios, the first adhesive layer 3 and the second adhesive layer 5 can be made of different materials. For example, the first adhesive layer 3 is made of glue, and the second adhesive layer 5 is made of self-adhesive tape. At the same time, according to the usage, the first adhesive layer 3 and the second adhesive layer 5 are not set during production and processing. For example, other fixed structures are selected to fix the first circuit layer 4 and the first insulating layer 2 together, and the second insulating layer 6 is fixedly installed together with the first circuit layer 4. In this embodiment, the first insulating layer 2 and the second insulating layer 6 are made of polyimide film or polyester film, and other insulating materials can also be used without special requirements. It should be noted that the thickness of the entire keyboard is controlled. The thickness of the first insulating layer 2 is 0.02mm~0.05mm, preferably 0.03, which can ensure the insulation effect while meeting the usage requirements. The thickness of the second insulating layer 6 can also be controlled at 0.02mm~0.05mm, which is consistent with the thickness of the first insulating layer 2.

[0028] In this embodiment, a composite film 11 is arranged above the light-guiding film 10. Since it has both reflective and shading functions, the thickness of the composite film 11 is 0.020-0.30 mm. White ink is arranged on the lower layer of the composite film 11 for reflection, and black ink is arranged on the upper layer of the composite film 11 for shading. White ink and black ink are not arranged at the position of the composite film 11 corresponding to the keycap 13, or an opening is arranged at the position of the composite film 11 corresponding to the keycap 13 to allow light to pass through.

[0029] In this embodiment, the support structure 1 is made of steel sheet with a thickness of 0.10 mm to 0.25 mm, preferably 0.15 mm, which can meet the strength requirements without making the overall circuit board too thick. The support structure 1 can also be made of other alloys, such as aluminum alloy, titanium alloy, etc., as long as the support strength of the keyboard is met.

[0030] In this embodiment, the elastic conductive member 14 is a spring, which can also be called Rubber Dome or pot piece. In specific implementation, rubber or silicone button form can also be selected, which mainly plays the role of elastic support and increasing hand feel. In specific implementation, according to the implementation situation, the spring can be installed on the trigger layer 9; or the spring can be installed on the light guide film 10; the spring can be installed on the composite film 11, among which it is preferably installed on the trigger layer 9 for the best use effect.

[0031] In this embodiment, a scissor foot 12 is installed between the keycap 13 and the elastic conductive member 14. The keycap 13 and the scissor foot 12 are respectively installed on the supporting structure 1. In order to facilitate installation, the supporting structure is provided with mounting holes, hooks, etc. for installation.

[0032] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A metal substrate flexible copper clad double-sided circuit board luminous keyboard module, characterized in that: The luminous keyboard module comprises a double-sided circuit board, a trigger layer (9), a light guide film (10), an elastic conductive member (14), an LED lamp (15) and a key cap (13); the trigger layer (9) is arranged on the double-sided circuit board; a conductive contact is arranged below the trigger layer (9) at a position corresponding to the double-sided circuit board; a conductive button (91) is arranged above the trigger layer (9) at a position corresponding to the conductive contact; the LED lamp (15) is mounted on the double-sided circuit board and arranged at a position corresponding to the key cap (13); the trigger layer (9) is provided with a first through hole (92) at a position corresponding to the LED lamp (15); the light guide film (10) is arranged above the trigger layer (9); the light guide film (10) is provided with a second through hole (101) at a position corresponding to the first through hole (92); The lamp (15) is installed in the first through hole (92) and the second through hole (101); the light guide film (10) is provided with a third through hole (102) at a position corresponding to the conduction point (91); the elastic conduction member (14) is provided at a position corresponding to the third through hole (102); and the key cap (13) is provided above the elastic conduction member (14); The double-sided circuit board comprises a support structure (1), a first insulating layer (2), a first circuit layer (4), a second insulating layer (6) and a second circuit layer (7); the first insulating layer (2) is arranged on the support structure (1); the first circuit layer (4) is arranged on the first insulating layer (2); the second insulating layer (6) is arranged on the first circuit layer (4); a fourth through hole (61) is provided in the second insulating layer (6) at a position corresponding to the first circuit layer (4); the second circuit layer (7) is arranged on the second insulating layer (6); and the second circuit layer (7) is electrically connected to the first circuit layer (4) via the fourth through hole (61); An extension portion (71) is provided on the second circuit layer (7) at a position corresponding to the fourth through hole (61); the extension portion (71) is placed in the fourth through hole (61) and connected to the first circuit layer (4).

2. The metal substrate flexible copper clad double-sided circuit board luminous keyboard module according to claim 1, characterized in that: The double-sided circuit board further comprises a protective layer (8), the protective layer (8) being arranged on the second circuit layer (7), a fifth through hole (81) being arranged on the protective layer (8) at a position corresponding to the fourth through hole (61), and the extension portion (71) being arranged in the fifth through hole (81).

3. The metal substrate flexible copper clad double-sided circuit board luminous keyboard module according to claim 1, characterized in that: The first insulating layer (2) is fixedly mounted together with the first circuit layer (4) using a first adhesive layer (3), and the thickness of the first insulating layer (2) is 0.02 mm to 0.05 mm; the second insulating layer (6) is fixedly mounted together with the first circuit layer (4) using a second adhesive layer (5), and the thickness of the second insulating layer (6) is 0.02 mm to 0.05 mm.

4. The metal substrate flexible copper clad double-sided circuit board luminous keyboard module according to claim 1, characterized in that: A composite film (11) is arranged above the light guide film (10), the thickness of the composite film (11) is 0.020-0.30 mm, white ink is arranged on the lower layer of the composite film (11), black ink is arranged on the upper layer of the composite film (11), and white ink and black ink are not arranged at the position of the composite film (11) corresponding to the key cap (13), or an opening is arranged at the position of the composite film (11) corresponding to the key cap (13).

5. The metal substrate flexible copper clad double-sided circuit board luminous keyboard module according to claim 1, characterized in that: The support structure (1) is made of steel sheet, and the thickness of the steel sheet is 0.10 mm to 0.25 mm.

6. The metal substrate flexible copper clad double-sided circuit board luminous keyboard module according to claim 1, characterized in that: The conduction points (91) are made of silver paste or carbon paste.

7. The metal substrate flexible copper clad double-sided circuit board luminous keyboard module according to claim 4, characterized in that: The elastic conductive member (14) is a spring sheet, which is installed on the trigger layer (9); or the spring sheet is installed on the light guide film (10); or the spring sheet is installed on the composite film (11).

8. The metal substrate flexible copper clad double-sided circuit board luminous keyboard module according to claim 5, characterized in that: A scissor foot (12) is installed between the key cap (13) and the elastic conductive member (14), and the key cap (13) and the scissor foot (12) are respectively installed on the supporting structure (1).

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