TWI691991B - Light emitting keyboard and lighting board thereof - Google Patents

Abstract

A light emitting keyboard includes a bottom board, keyswitches, and a lighting board. The lighting board is disposed between the bottom board and the keyswitches or under the bottom board and includes a flexible substrate having a first hole, multiple-light emitting diodes corresponding to the keyswitches, first and second silver-paste circuit layers formed on upper and lower surfaces of the flexible substrate respectively, a via pillar formed in the first hole to be coupled to the first and second silver-paste circuit layers, a copper layer plated on the first and second silver-paste layers, and a first protection layer coated on the copper layer and having second holes. The multiple-light emitting diode is disposed on the copper layer plated on the first silver-paste circuit layer through the second hole to be coupled to the first silver-paste circuit layer.

Description

Luminous keyboard and its light source lamp board

The invention relates to a light-emitting keyboard and its light source lamp board, in particular to a light-emitting keyboard and a light source lamp board having light source lamp boards with silver paste circuit layers formed on the upper and lower surfaces of the flexible circuit substrate respectively.

Generally speaking, in order to make the keyboard have the key-emitting function, the current common design is to directly configure a light-emitting diode circuit board with a plurality of light-emitting diodes corresponding to each key on the keyboard bottom plate, thereby, the light-emitting diodes The system can emit light to the corresponding keycap to produce the key glow effect. In addition, this design can also use the integrated circuit control chip on the light-emitting diode circuit board to perform the light-emitting control of each light-emitting diode by means of telecommunication transmission. , So that the keyboard can have more varied visual effects of key luminescence.

However, since the circuit board used in the above-mentioned LED circuit board with integrated circuit control chip usually adopts a hardened resin material with higher material cost in consideration of the yield of the process, the above design will not only produce light-emitting diodes The thickness of the board of the polar body circuit board is not easy to be reduced, which is not conducive to the thin design of the keyboard, and it also causes the manufacturing cost of the light-emitting diode circuit board to remain high.

Therefore, one of the objects of the present invention is to provide a light-emitting keyboard with a light source lamp board in which silver paste circuit layers are respectively formed on the upper and lower surfaces of a flexible circuit board, and a light source lamp board to solve the above problems.

According to an embodiment, the light-emitting keyboard of the present invention includes a bottom plate, a plurality of keys, and a light source light board. The plurality of buttons are arranged on the bottom plate, each button includes a key cap and a lift mechanism. The lifting mechanism is disposed between the bottom plate and the key cap, and the key cap moves up and down relative to the bottom plate via the lifting mechanism. The light source lamp board is disposed between the bottom plate and the plurality of keys or under the bottom board. The light source lamp plate includes a flexible circuit substrate, a plurality of multicolor light-emitting diodes, a first silver paste circuit layer, A second silver paste circuit layer, a conductive pillar, a copper plated layer, and a first protective layer. The flexible circuit substrate has at least one first through hole. The plurality of multi-color light-emitting diodes respectively correspond to a plurality of buttons, and are used to generate light incident on the plurality of keycaps. The first silver paste circuit layer has a plurality of first circuits, and the plurality of first circuits are formed on an upper surface of the flexible circuit substrate. The second silver paste circuit layer has a plurality of second circuits, and the plurality of second circuits are formed on a lower surface of the flexible circuit substrate. The conductive pillar is formed in the at least one first through hole to electrically connect at least one of the first lines and at least one of the second lines. The copper plating layer is attached to the first silver paste circuit layer and the second silver paste circuit layer. The first protective layer is coated on the copper-plated layer, and corresponding to the plurality of keys and the position corresponding to the copper-plated layer plated on the first silver paste circuit layer, a plurality of second through holes are formed The color light-emitting diodes are provided on the copper plating layer plated on the first silver paste circuit layer through corresponding second through holes to be electrically connected to the first circuits.

According to another embodiment, the light source lamp board of the present invention is suitable for providing light to a plurality of keys on a keyboard. The light source lamp board includes a flexible circuit substrate, a plurality of multi-color light-emitting diodes, and a first silver paste The circuit layer, a second silver paste circuit layer, a conductive post, a copper plated layer, and a first protective layer. The flexible circuit substrate has at least one first through hole. The plurality of multi-color light-emitting diodes respectively correspond to the plurality of buttons, and are used to generate light incident on the plurality of buttons. The first silver paste circuit layer has a plurality of first circuits, and the plurality of first circuits are formed on an upper surface of the flexible circuit substrate. The second silver paste circuit layer has a plurality of second circuits, and the plurality of second circuits are formed on a lower surface of the flexible circuit substrate. The conductive pillar is formed in the at least one first through hole to electrically connect at least one of the first lines and at least one of the second lines. The copper plating layer is attached to the first silver paste circuit layer and the second silver paste circuit layer. The first protective layer is coated on the copper plating layer and corresponds to a plurality of A plurality of second through holes are formed at the position of the key and the copper plating layer attached to the first silver paste circuit layer, and each multi-color light-emitting diode is provided on the plated through the corresponding second through hole The copper plating layer of the first silver paste circuit layer is electrically connected to the first circuits.

According to another embodiment, the light-emitting keyboard of the present invention includes a bottom plate, a plurality of keys, and a light source light board. The plurality of keys are arranged on the bottom plate, and each key includes a key cap and a lifting structure. The lifting mechanism is disposed between the bottom plate and the key cap, and the key cap moves up and down relative to the bottom plate via the lifting mechanism. The light source lamp board is disposed between the bottom plate and the plurality of keys or under the bottom board. The light source lamp plate includes a flexible circuit board, a plurality of multi-color light-emitting diodes, a first highly conductive circuit layer, A second highly conductive circuit layer, a conductive pillar, a highly conductive plating layer, and a first protective layer. The flexible circuit substrate has at least one first through hole. The plurality of multi-color light-emitting diodes respectively correspond to a plurality of buttons, and are used to generate light incident on the plurality of keycaps. The first highly conductive circuit layer has a plurality of first circuits, and the plurality of first circuits are formed on an upper surface of the flexible circuit substrate. The second highly conductive circuit layer has a plurality of second circuits, and the plurality of second circuits are formed on a lower surface of the flexible circuit substrate. The conductive pillar is formed in the at least one first through hole to electrically connect at least one of the first lines and at least one of the second lines. The highly conductive plating layer is attached to the first highly conductive circuit layer and the second highly conductive circuit layer. The first protective layer is coated on the highly conductive plating layer and a second through hole is formed corresponding to each button and corresponding to the highly conductive plating layer attached to the first highly conductive circuit layer The polar body is electrically connected to the first circuits through a corresponding second through hole and through a highly conductive plating layer deposited on the first highly conductive circuit layer.

According to another embodiment, the light source lamp board of the present invention is suitable for providing light to a plurality of keys on a keyboard. The light source lamp board includes a flexible circuit substrate, a plurality of multi-color light-emitting diodes, and a first highly conductive The circuit layer, a second highly conductive circuit layer, a conductive pillar, a highly conductive plating layer, and a first protective layer. The flexible circuit substrate has at least one first through hole. The plurality of multi-color light-emitting diodes respectively correspond to the plurality of buttons, and are used to generate light incident on the plurality of buttons. The first highly conductive line The layer has a plurality of first lines formed on an upper surface of the flexible circuit substrate. The second highly conductive circuit layer has a plurality of second circuits, and the plurality of second circuits are formed on a lower surface of the flexible circuit substrate. The conductive pillar is formed in the at least one first through hole to electrically connect at least one of the first lines and at least one of the second lines. The highly conductive plating layer is attached to the first highly conductive circuit layer and the second highly conductive circuit layer. The first protective layer is coated on the highly conductive plating layer and a second through hole is formed corresponding to each button and corresponding to the highly conductive plating layer attached to the first highly conductive circuit layer The polar body is electrically connected to the first circuits through a corresponding second through hole and through a highly conductive plating layer deposited on the first highly conductive circuit layer.

In summary, through the design that only the lines used for telecommunication transmission (ie, the first silver paste circuit layer, the second silver paste circuit layer, and the copper plating layer) are formed on the upper and lower surfaces of the flexible circuit substrate, respectively The invention can utilize the flexibility of the flexible circuit board (the minimum plate thickness of the flexible material that can be achieved in actual manufacturing is less than the minimum plate thickness that the hard material can achieve in actual manufacturing) and the flexible circuit board The material cost is lower than the material cost of the circuit board, so as to effectively solve the problem that the thickness of the light-emitting diode circuit board mentioned in the prior art is not easy to reduce and is not conducive to the thin design of the light-emitting keyboard, and can be further reduced Manufacturing cost of luminous keyboard.

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

10, 100, 150: illuminated keyboard

12, 102: bottom plate

14: Button

15: Button area

18: Keycap

20: Lifting mechanism

21, 104, 152: thin film circuit board

22: Flexible circuit board

23: First through hole

24: Multicolor LED

25, 25’: conductive column

30: copper plating

31: Second through hole

32: The first protective layer

33: Second protective layer

40: Hollow slot

103: Piercing

202: the first highly conductive circuit layer

204: second highest conductive circuit layer

206: Highly conductive coating

208: Alloy bonding layer

252: conductive antioxidant layer

302: The first conductive anti-oxidation layer

304: Second conductive anti-oxidation layer

S ₁ : upper surface

S ₂ : lower surface

16, 16’, 16”, 200, 250, 300: light source lamp board

26, 26’, 26”: the first silver paste line layer

27, 27’, 27”, 203: the first line

28, 28’, 28”: Second silver paste line layer

29, 29’, 29”, 205: second line

34: cable board section

36: connection line layer

38: Control circuit board

FIG. 1 is a perspective schematic view of a light-emitting keyboard according to an embodiment of the invention.

FIG. 2 is a schematic cross-sectional view of the light-emitting keyboard of FIG. 1 along section line A-A.

Figure 3 is an enlarged top view of the light source lamp board of Figure 2.

FIG. 4 is a schematic partial cross-sectional view of the light source lamp board of FIG. 3 along section line B-B.

FIG. 5 is a schematic partial cross-sectional view of a light source lamp panel according to another embodiment of the present invention.

FIG. 6 is a schematic partial cross-sectional view of a forming process of a light source lamp board according to another embodiment of the present invention.

FIG. 7 is a schematic partial cross-sectional view of a light-emitting keyboard according to another embodiment of the present invention.

FIG. 8 is a schematic partial cross-sectional view of a light-emitting keyboard according to another embodiment of the present invention.

FIG. 9 is a schematic partial cross-sectional view of a light source lamp board according to another embodiment of the present invention.

FIG. 10 is a schematic partial cross-sectional view of a light source lamp panel according to another embodiment of the present invention.

FIG. 11 is a schematic partial cross-sectional view of a light source lamp board according to another embodiment of the present invention.

Please refer to FIG. 1 and FIG. 2, FIG. 1 is a perspective schematic view of a light-emitting keyboard 10 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional schematic view of the light-emitting keyboard 10 of FIG. 1 along section line AA, As shown in FIGS. 1 and 2, the light-emitting keyboard 10 includes a bottom plate 12, a plurality of keys 14, and a light source lamp board 16. A plurality of keys 14 are provided on the bottom plate 12 for the user to press to perform the function that the user wants to input. Each key 14 includes a keycap 18 and a lifting mechanism 20. The lifting mechanism 20 is provided on the bottom plate 12 and the keycap 18 In between, the keycap 18 can move up and down relative to the bottom plate 12 via the lifting mechanism 20. In this embodiment, the lifting mechanism 20 is preferably a scissor mechanism as shown in Figure 2 (but not limited to this, it can be changed to other common key cap lifting designs, such as magnetic suction Design, etc.) and can be movably connected to the keycap 18 and the bottom plate 12, whereby the keycap 18 can move up and down relative to the bottom plate 12 through the scissor connection design of the lifting mechanism 20.

As for the luminous design of the light source lamp board 16, please refer to FIG. 2, FIG. 3 and FIG. 4, FIG. 3 is an enlarged top view of the light source lamp board 16 of FIG. 2, and FIG. 4 is FIG. 3 A partial cross-sectional schematic view of the light source lamp board 16 along the section line BB. As can be seen from FIGS. 2, 3, and 4, the light source lamp board 16 is disposed on the bottom plate 12, and the light source lamp board 16 includes the flexible circuit board 22 A plurality of multi-color light-emitting diodes 24, conductive pillars 25, a first silver paste circuit layer 26, a second silver paste circuit layer 28, a copper plating layer 30, and a first protective layer 32. The flexible circuit board 22 can be preferably composed of a flexible circuit board material (for example, polyterephthalic acid Polyethylene terephthalate (PET) or polyimide (PI), but not limited to this, and has at least one first through hole 23 (the number and configuration of the actual circuit design of the end-view light source lamp board 16 Depends on demand, not limited to Figure 3). The plurality of multi-color light-emitting diodes 24 can be preferably red, green, and blue light-emitting diodes (RGB LEDs) and correspond to the plurality of buttons 14, respectively, whereby the multi-color light-emitting diodes 24 can be used to emit light incident To the corresponding keycap 18, so as to achieve the key light effect.

The first silver paste circuit layer 26 may have a plurality of first circuits 27 (the number and configuration of which depend on the actual circuit design requirements of the light source lamp board 16 and are not limited to FIG. 3), and the plurality of first circuits 27 The silver paste printing process may be preferably formed on the upper surface S _{1 of the} flexible circuit substrate 22. Similarly, the second silver paste circuit layer 28 may have a plurality of surfaces S ₂ formed on the lower surface of the flexible circuit substrate 22 A second line 29, at least one of the plurality of first lines 27 may be electrically connected to at least one of the plurality of second lines 29 via the conductive pillar 25 formed in the first through hole 23 The configuration of the hole connection depends on the actual circuit design requirements of the light source lamp board 16, not limited to FIG. 3) to establish the electrical connection of the first circuit 27 and the second circuit 29 of the flexible circuit board 22, and further In order to solve the problem of silver paste lines having different impedances due to different line lengths, in this embodiment, the copper plating layer 30 can be plated on the first silver paste circuit layer 26 and the second silver paste circuit layer 28, and The first protective layer 32 may be preferably composed of ultraviolet (UV) thermosetting insulating adhesive material (but not limited thereto) and coated on the copper plating layer 30, thereby generating the effect of preventing the oxidation of the copper plating layer 30.

In more detail, as can be seen from FIG. 4, the first protective layer 32 can be formed with a plurality of second positions at positions corresponding to the plurality of keys 14 and the copper plating layer 30 plated on the first silver paste circuit layer 26 Through holes 31, each multi-color light emitting diode 24 can be provided on the copper plating layer 30 plated on the first silver paste circuit layer 26 through the corresponding second through holes 31 to be electrically connected to the first circuit 27 , So that the light source lamp board 16 can carry out telecommunication transmission through the copper plating layer 30 (compared to the silver paste circuit, the copper circuit does not have the problem of different impedance due to the different circuit length) to control a plurality of multicolor light-emitting diodes 24 glow and color changes. In practical applications, the light source lamp board 16 may further include a second protective layer 33, the second protective layer 33 is coated on the first protective layer 32 and Each multi-color light-emitting diode 24 is provided with protection effects of anti-electrostatic discharge (ESD), dustproof and waterproof.

Here, the first silver paste circuit layer 26, the second silver paste circuit layer 28, the conductive pillar 25, the copper plating layer 30, the first protective layer 32, and the second protective layer 33 are formed on the flexible circuit board 22 The steps are explained. As can be seen from FIG. 4, first, the first silver paste circuit layer 26 and the second silver paste circuit layer 28 can be formed on the upper surface S ₁ and the lower surface S _{2 of the} flexible circuit board 22 by a silver paste printing process, and plated The copper layer 30 can be deposited on the first silver paste circuit layer 26 and the second silver paste circuit layer 28 (for example, by a chemical plating process, etc.). During this process, the silver paste and the copper system can be along the first through hole 23 to form a conductive pillar 25 (as shown in FIG. 4, that is to say, in this embodiment, the conductive pillar 25 is composed of silver paste and copper laminated material), so as to establish the first circuit 27 and the second circuit 29 Electrical connection; Next, the first protective layer 32 can be printed on the copper plating layer 30 and has a second through hole 31 formed thereon, whereby the multicolor light-emitting diode 24 can pass through the second through hole 31 is disposed on the copper plating layer 30 (for example, by soldering, etc.) to be electrically connected to the first circuit 27; finally, the second protective layer 33 can be applied to the first protective layer 32 and the multi-color light-emitting diode by a printing process On the body 24, the forming process of the light source lamp board 16 can be completed in this way. It should be noted that, as shown in FIG. 4, in the above process of forming the first protective layer 32 and the second protective layer 33 in sequence, the first protective layer 32 and the second protective layer 33 may preferably be along The first through hole 23 is formed with a hollow slot 40 (but not limited to this, in another embodiment, it can also use the first protective layer 32 and the second protective layer 33 to fill the first through hole 23 in sequence Design).

In addition, as shown in FIG. 3, the flexible circuit board 22 extends outward to form at least one row of wire plate portions 34 (three are shown in FIG. 3, but not limited thereto), the light source lamp board 16 The connection circuit layer 36 and the control circuit board 38 may be further included. The connection circuit layer 36 is formed on the wiring board portion 34 and is electrically connected to a plurality of multicolor light-emitting diodes 24 through the copper plating layer 30. The control circuit board 38 system One end connected to the cable board portion 34 (for example, an electrical connection method in which the cable is plugged into the port) is electrically connected to the connection circuit layer 36, whereby the control circuit board 38 can transmit electricity through the connection circuit layer 36 Sexual signals to a plurality of multi-color light-emitting diodes 24 to perform the light-emitting control of the plurality of multi-color light-emitting diodes 24 (for example, to control the time division of the plurality of multi-color light-emitting diodes 24) The related circuit control design and principle of illuminating or generating different colored lights in sequence are common in the prior art, which will not be repeated here), so that the luminous keyboard 10 can have more varied visual effects of luminous keys. In addition, in terms of key trigger design, as can be seen from FIG. 2, the light-emitting keyboard 10 may further include a thin film circuit board 21, which is disposed on the light source lamp board 16, whereby, when the key cap 18 is pressed by an external force, The keycap 18 moves downwards with the lifting mechanism 20, so that the corresponding membrane switch on the membrane circuit board 21 is triggered, so that the button 14 can perform the function that the user wants to input according to the button 14 and the membrane circuit board 21 The related descriptions of the trigger design (for example, using the protruding structural member on the lifting mechanism 20 to press down the membrane switch on the membrane circuit board 21, etc.) are common in the prior art and will not be repeated here.

In this way, by forming only the circuits for telecommunication transmission (ie, the first silver paste circuit layer 26, the second silver paste circuit layer 28, and the copper plating layer 30) on the upper and lower surfaces S of the flexible circuit substrate 22, respectively ₁ , S ₂ , and the design of the external connection of the control circuit board 38 used to control the light emission of the multi-color light-emitting diode 24 on one side of the flexible circuit board 22, plus from FIG. 1 and FIG. 3 , A plurality of buttons 14 can form a button area 15 and the area of the flexible circuit board 22 is substantially equal to the area of the button area 15 (since the control circuit board 38 only needs to be configured to control the light emission of the multi-color light-emitting diode 24 The integrated circuit control chip does not need to be equipped with a plurality of multi-color light-emitting diodes 24 and a telecommunication transmission line respectively connected to each multi-color light-emitting diode 24, therefore, the area of the control circuit board 38 can be smaller than the flexible circuit The area of the substrate 22), the present invention can utilize the flexibility of the flexible circuit board (the minimum material thickness that the flexible material can achieve in actual manufacturing is less than the minimum material that the hard board material can achieve in actual manufacturing) Thickness) and the material cost of the flexible circuit board is lower than the material cost of the circuit board, so as to effectively solve the problem that the thickness of the light-emitting diode circuit board mentioned in the prior art is not easy to reduce and is not conducive to the thin design of the light-emitting keyboard Problems, and can further reduce the manufacturing cost of the light-emitting keyboard.

In addition, it is worth mentioning that in the embodiment where the light source lamp board 16 does not need to have a control function capable of controlling the light emission of the multicolor light-emitting diode 24, that is to say, the light source lamp board 16 only needs to have a telecommunication circuit The transmission function and the light-emitting control function are electronic devices (such as notebooks) connected by the light-emitting keyboard 10 In the application provided by the computer), the control circuit board 38 is an omitting element, so as to further simplify the circuit board design of the light-emitting keyboard 10 and reduce the manufacturing cost of the light-emitting keyboard 10. In addition, in practical applications, the control circuit board 38 can be stacked under the light source lamp board 16 by using the flexibility of the flexible circuit board 22, so as to further reduce the configuration space required by the light source lamp board 16. It should be noted that the configuration of the control circuit board may not be limited to the above embodiment, and it may also be a design in which the configuration of the wiring board portion and the connection circuit layer is omitted and the control circuit board is directly laminated under the flexible circuit board, thereby To further simplify the design of the circuit board of the light-emitting keyboard, in short, in the embodiment that omits the configuration of the cable board portion and the connection circuit layer, the control circuit board can be directly laminated under the flexible circuit board (for example, different Anisotropic Conductive Film (ACF) or hot-press soldering (Hot bar, etc.) is used to electrically connect to the multi-color light-emitting diode through the copper plating layer, by which the control circuit board can be used to The copper-plated layer transmits electrical signals to the multi-color light-emitting diodes to control the light emission of the multi-color light-emitting diodes.

In addition, the configuration of the copper plating layer, the first silver paste circuit layer and the second silver paste circuit layer may not be limited to the above embodiment. For example, please refer to FIG. 5, which is another embodiment according to the present invention. The schematic diagram of a partial cross-section of the proposed light source lamp board 16'. In this embodiment, the elements mentioned in the above embodiments have the same number as the same structure or function, and the related description is not repeated here. Repeat. As can be seen from FIG. 5, the light source lamp board 16 ′ includes the flexible circuit board 22, a plurality of multicolor light-emitting diodes 24 (only one is shown in FIG. 5 ), the conductive pillar 25 ′, and the first silver paste circuit layer 26 ', the second silver paste circuit layer 28', the copper plating layer 30, the first protective layer 32, and the second protective layer 33. The first silver paste circuit layer 26' may have a plurality of first circuits 27'. The plurality of first circuits 27' may be preferably formed on the upper surface S _{1 of the} flexible circuit substrate 22 by a silver paste printing process, similar Ground, the second silver paste wiring layer 28 ′ may have a plurality of second wirings 29 ′ formed on the lower surface S ₂ of the flexible circuit substrate 22. It should be noted that, as shown in FIG. 5, in the above process of forming the first line 27' and the second line 29', the silver paste system can preferably fill (but not limited to) the first through hole 23 to form a conductive pillar 25' (that is, in this embodiment, the conductive pillar 25' is composed of silver paste material) to establish an electrical connection between the first line 27' and the second line 29'.

In another embodiment, please refer to FIG. 6, which is a schematic partial cross-sectional view of the forming process of the light source lamp board 16" according to another embodiment of the present invention. The mentioned elements have the same number, which means that they have the same structure or function, and the relevant description will not be repeated here. It can be seen from FIG. 6 that the light source lamp board 16" includes the flexible circuit board 22 and a plurality of multi-color lights The diode 24 (only one is shown in FIG. 6), the conductive pillar 25', the first silver paste wiring layer 26", the second silver paste wiring layer 28", the copper plating layer 30, and the protective layer 32. The first silver paste line layer 26" may have a plurality of first lines 27" and the second silver paste line layer 28" may have a plurality of second lines 29", as shown in FIG. 6(a), the first The circuit 27" and the second circuit 29" can be preferably formed on the upper surface S ₁ and the lower surface S _{2 of the} flexible circuit board 22 using a silver paste printing process, and the copper plating layer 30 can be plated on the first On the silver paste circuit layer 26" and the second silver paste circuit layer 28", as shown in FIG. 6(b), the silver paste printing process may be performed again to fill the first through hole with the silver paste 23, so that the first line 27" and the second line 29" are electrically connected to each other via the conductive post 25' to establish the circuit connection of the flexible circuit board 22.

In addition, the configuration of the thin film circuit board, the light source lamp board, and the bottom plate may not be limited to the above embodiments. For example, please refer to FIG. 7, which is a partial cross-sectional schematic view of a light-emitting keyboard 100 according to another embodiment of the present invention. In this embodiment, the elements mentioned in the above embodiments have the same number as the representative. It has the same structure or function, and the related description is not repeated here. As can be seen from FIG. 7, the light-emitting keyboard 100 includes a plurality of keys 14 (only one is shown in FIG. 7), the light source lamp board 16, the bottom plate 102, and the thin film circuit board 104, the thin film circuit board 104 is disposed on the bottom plate 102, The light source lamp board 16 is attached to the bottom plate 102 and the multi-color light-emitting diode 24 can be inserted into the perforation 103 of the bottom plate 102, thereby effectively reducing the configuration space occupied by the light-emitting diode inside the light-emitting keyboard, The thin design of the luminous keyboard.

In another embodiment, please refer to FIG. 8, which is a partial cross-sectional schematic diagram of a light-emitting keyboard 150 according to another embodiment of the present invention. In this embodiment, the elements mentioned in the above embodiments have the same number In other words, it means that they have the same structure or function, and the related description is not repeated here. As can be seen from FIG. 8, the light-emitting keyboard 150 includes a plurality of keys 14 (only one is shown in FIG. 8), and the light source lamp panel 16. The bottom plate 12 and the thin film circuit board 152, which are disposed between the bottom plate 12 and the light source lamp board 16, whereby when the key cap 18 is pressed by an external force, the key cap 18 moves down with the lifting mechanism 20 , So that the corresponding membrane switch on the membrane circuit board 152 is triggered, so that the button 14 can perform the function that the user wants to input accordingly.

In another embodiment, the present invention can be changed to a three-layer structure design to complete the electrical connection of the multi-color light-emitting diode on the flexible circuit board. For example, please refer to FIG. 9, which is based on this A schematic diagram of a partial cross-section of a light source lamp panel 200 according to another embodiment of the invention. In this embodiment, the elements mentioned in the above embodiment have the same number as the same number, which means that they have the same structure or function. I will not repeat them here. The light source lamp board 200 can be applied to a light-emitting keyboard to produce a key-emitting effect. As can be seen from FIG. 9, the light source lamp board 200 includes a flexible circuit board 22 and a plurality of multi-color light-emitting diodes 24 (in FIG. 9 only One is shown), the conductive pillar 25, the first highly conductive circuit layer 202, the second highly conductive circuit layer 204, the highly conductive plating layer 206, the first protective layer 32, and the second protective layer 33. The first highly conductive circuit layer 202 and the second highly conductive circuit layer 204 can be preferably composed of silver paste or copper paste material (but not limited to this), the first highly conductive circuit layer 202 can have a plurality of A circuit 203 and the second highly conductive circuit layer 204 may have a plurality of second circuits 205. The plurality of first circuits 203 and the plurality of second circuits 205 may be preferably formed on the flexible circuit substrate 22 by a printing process On the upper surface S ₁ and the lower surface S ₂ , at least one of the plurality of first lines 203 can be electrically connected to at least one of the plurality of second lines 205 through conductive pillars 25 formed in the first through holes 23 (The circuit through-hole connection configuration depends on the actual circuit design requirements of the light source lamp board 200) to establish the electrical connection between the first circuit 203 and the second circuit 205 of the flexible circuit board 22. The highly conductive plating layer 206 can be preferably composed of copper, silver or nickel (but not limited to this) and is plated (e.g. by chemical plating process, etc.) on the first highly conductive circuit layer 202 and the second highly conductive layer On the circuit layer 204. In this embodiment, the light source lamp panel 200 may further include an alloy bonding layer 208. The alloy bonding layer 208 may be preferably composed of but not limited to tin-bismuth alloy or tin-silver-copper alloy material and formed in Each multi-color light-emitting diode 24 is corresponding to the corresponding high-conductivity plating layer 206, so that each multi-color light-emitting diode 24 can be more firmly bonded to the high-conductivity plating layer 206. As for other relevant descriptions of the light source lamp board 200 (such as the design of the conductive post, the design of the control circuit board, etc.), it can be referred to the above embodiment by analogy, and will not be repeated here.

In another embodiment, the present invention can be changed to a four-layer structure design to complete the electrical connection of the multi-color light-emitting diode on the flexible circuit substrate. For example, please refer to FIG. 10, which is based on A partial cross-sectional schematic diagram of a light source lamp panel 250 according to another embodiment of the invention. In this embodiment, the elements mentioned in the above embodiment have the same number as the same number, which means they have the same structure or function. I will not repeat them here. The light source lamp board 250 can be applied to a light-emitting keyboard to produce a key luminous effect. As can be seen from FIG. 10, the light source lamp board 250 includes a flexible circuit board 22 and a plurality of multicolor light-emitting diodes 24 (in FIG. 10 only (Showing one), conductive pillar 25, first highly conductive circuit layer 202, second highly conductive circuit layer 204, highly conductive plating layer 206, alloy bonding layer 208, conductive antioxidant layer 252, first protective layer 32, and second protection Layer 33. In this embodiment, the conductive anti-oxidation layer 252 may be preferably composed of nickel or gold (but not limited to this) and formed between the highly conductive plating layer 206 and the alloy bonding layer 208 to prevent high The oxidation effect of the conductive coating 206. As for other related descriptions of the light source lamp board 250 (such as the design of the conductive post, the design of the control circuit board, etc.), it can be referred to the above embodiment by analogy, which will not be repeated here.

In another embodiment, the present invention may adopt a five-layer structure design to complete the electrical connection of the multi-color light-emitting diode on the flexible circuit substrate. For example, please refer to FIG. 11, which is based on A schematic partial cross-sectional view of a light source lamp panel 300 according to another embodiment of the invention. In this embodiment, the elements mentioned in the above embodiments have the same number as the same number, which means they have the same structure or function. I will not repeat them here. The light source lamp panel 300 can be applied to a light-emitting keyboard to generate the key-emitting effect. As can be seen from FIG. 11, the light source lamp panel 300 includes a flexible circuit board 22 and a plurality of multi-color light-emitting diodes 24 (in FIG. (Showing one), conductive pillar 25, first highly conductive circuit layer 202, second highly conductive circuit layer 204, highly conductive plating layer 206, alloy bonding layer 208, first conductive antioxidant layer 302, second conductive antioxidant layer 304, The first protective layer 32, and the second protective layer 33. In this embodiment, the first conductive anti-oxidation layer 302 may be preferably composed of nickel material (but not limited to this) and formed on the highly conductive plating layer 206 and alloy Between the next layers 208, the second conductive anti-oxidation layer 304 can be preferably composed of gold material (but not limited to this) and formed between the first conductive anti-oxidation layer 302 and the alloy bonding layer 208, so First, through the above double-layer anti-oxidation design, the present invention can further improve the anti-oxidation protection for highly conductive plating. As for other relevant descriptions of the light source lamp board 300 (such as the design of the conductive post, the design of the control circuit board, etc.), it can be referred to the above embodiment by analogy, which will not be repeated here.

The above are only the preferred embodiments of the present invention, and all changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

16: Light source lamp board

22: Flexible circuit board

26: The first silver paste line layer

27: First line

30: copper plating

34: cable board section

36: connection line layer

38: Control circuit board

Claims (42)

A light-emitting keyboard, comprising: a bottom plate; a plurality of keys arranged on the bottom plate, each key comprising: a key cap; and a lifting mechanism arranged between the bottom plate and the key cap, the key cap Moving up and down relative to the bottom plate via the lifting mechanism; and a light source lamp board disposed between the bottom plate and the plurality of buttons or under the bottom board, the light source lamp board includes: a flexible circuit board having At least one first through hole; a plurality of multi-color light-emitting diodes, which respectively correspond to a plurality of keys, used to generate light incident on the plurality of key caps; a first silver paste circuit layer, which has a plurality of first Circuit, the plurality of first circuits are formed on an upper surface of the flexible circuit substrate; a second silver paste circuit layer having a plurality of second circuits, the plurality of second circuits formed on the flexible circuit substrate A lower surface; a conductive post formed in the at least one first through hole to electrically connect at least one of the first circuits and at least one of the second circuits; a copper plating layer, which Plated on the first silver paste circuit layer and the second silver paste circuit layer; and a first protective layer coated on the copper plated layer and corresponding to each button and correspondingly plated on the first silver A second through hole is formed at the position of the copper plating layer on the paste circuit layer, and each multicolor light-emitting diode passes through the corresponding second through hole and is electrically plated through the copper plating layer attached to the first silver paste circuit layer Connect to these first lines. The light-emitting keyboard according to claim 1, wherein the flexible circuit substrate extends outward to form at least one wiring board portion, and the light source lamp board further includes: a connection circuit layer formed on the at least one wiring board portion And is electrically connected to the plurality of multi-color light-emitting diodes through the copper plating layer; and a control circuit board, which is connected to one end of the wiring board portion to be electrically connected to the connection circuit layer for passing through the connection circuit The layer transmits electrical signals to the plurality of multicolor light-emitting diodes to perform light emission control of the plurality of multicolor light-emitting diodes. The illuminated keyboard according to claim 2, wherein the control circuit board is stacked under the light source lamp board. The light-emitting keyboard according to claim 1, wherein the flexible circuit substrate is made of polyethylene terephthalate (PET) or polyimide (PI) material. The illuminated keyboard according to claim 1, wherein the first protective layer is composed of ultraviolet (UV) thermosetting insulating adhesive material. The light-emitting keyboard according to claim 1, wherein the light source lamp board further comprises: a second protective layer coated on the first protective layer and each multi-color light-emitting diode. The light-emitting keyboard according to claim 6, wherein the first protective layer and the second protective layer are formed with a hollow slot along the at least one first through hole. The illuminated keyboard according to claim 1, wherein the plurality of keys form a key area, and the area of the flexible circuit substrate is substantially equal to the area of the key area. The luminous keyboard according to claim 1, wherein the conductive post is composed of silver paste material or a laminated material of copper and silver paste. The light-emitting keyboard according to claim 1, wherein the light source lamp board further includes a control circuit board, the control circuit board is laminated under the flexible circuit substrate to be electrically connected to the plurality of multi-color lights through the copper plating layer Diode, the control circuit board is used to transmit electrical signals to the plurality of multi-color light-emitting diodes to perform the light-emitting control of the plurality of multi-color light-emitting diodes. The light-emitting keyboard according to claim 1, wherein an alloy adhesive layer is formed between each multi-color light-emitting diode and the copper-plated layer. The illuminated keyboard according to claim 11, wherein the alloy bonding layer is made of tin-bismuth alloy or tin-silver-copper alloy material. A light source lamp board suitable for providing light to a plurality of keys on a keyboard. The light source lamp board includes: a flexible circuit board having at least one first through hole; a plurality of multi-color light-emitting diodes, which Corresponding to a plurality of buttons, respectively, for generating light incident on the plurality of buttons; a first silver paste circuit layer having a plurality of first circuits, the plurality of first circuits formed in the An upper surface of the flexible circuit substrate; a second silver paste circuit layer having a plurality of second circuits formed on a lower surface of the flexible circuit substrate; a conductive post formed on the flexible circuit substrate At least one of the first through holes is electrically connected to at least one of the first circuits and at least one of the second circuits; a copper plated layer is attached to the first silver paste circuit layer and On the second silver paste circuit layer; and a first protective layer coated on the copper plating layer and corresponding to each button and corresponding to the position of the copper plating layer deposited on the first silver paste circuit layer There is a second through hole, and each multi-color light emitting diode is electrically connected to the first circuits through a corresponding second through hole and through a copper plating layer deposited on the first silver paste circuit layer. The light source lamp board according to claim 13, wherein the flexible circuit substrate extends outward to form at least one wire board portion, and the light source lamp board further includes: a connection circuit layer formed on the at least one wire board portion And electrically connected to the plurality of multi-color light-emitting diodes through the copper plating layer; and a control circuit board connected to one end of the cable board portion to be electrically connected to the connection circuit layer for passing the connection The circuit layer transmits electrical signals to the plurality of multi-color light-emitting diodes to perform light emission control of the plurality of multi-color light-emitting diodes. The light source lamp board according to claim 14, wherein the control circuit board is stacked under the light source lamp board. The light source lamp panel according to claim 13, wherein the flexible circuit board is composed of polyethylene terephthalate or polyimide material. The light source lamp panel according to claim 13, wherein the first protective layer is composed of ultraviolet thermosetting insulating glue material. The light source lamp panel according to claim 13, further comprising: a second protective layer coated on the first protective layer and each multi-color light-emitting diode. The light source lamp panel according to claim 18, wherein the first protective layer and the second protective layer are formed with a hollow slot along the at least one first through hole. The light source lamp panel according to claim 13, wherein the plurality of keys form a key area, and the area of the flexible circuit substrate is substantially equal to the area of the key area. The light source lamp panel as described in claim 13, wherein the conductive column is composed of silver paste material or copper and silver paste laminated material. The light source lamp board according to claim 13, wherein the light source lamp board further includes a control circuit board, the control circuit board is laminated under the flexible circuit board to be electrically connected to the plurality of multi-colors through the copper plating layer A light-emitting diode, the control circuit board is used to transmit electrical signals to the plurality of multi-color light-emitting diodes to perform light-emission control of the plurality of multi-color light-emitting diodes. The light source lamp panel according to claim 13, wherein an alloy adhesive layer is formed between each multi-color light-emitting diode and the copper plating layer. The light source lamp panel according to claim 23, wherein the alloy bonding layer is composed of tin-bismuth alloy or tin-silver-copper alloy material. A light-emitting keyboard, comprising: a bottom plate; a plurality of keys arranged on the bottom plate, each key comprising: a key cap; and a lifting mechanism arranged between the bottom plate and the key cap, the key cap Moving up and down relative to the bottom plate via the lifting mechanism; and a light source lamp board disposed between the bottom plate and the plurality of buttons or under the bottom board, the light source lamp board includes: a flexible circuit board having At least one first through hole; a plurality of multi-color light-emitting diodes, which respectively correspond to a plurality of keys, for generating light incident on the plurality of key caps; a first highly conductive circuit layer, which has a plurality of first Circuit, the plurality of first circuits are formed on an upper surface of the flexible circuit substrate; a second highly conductive circuit layer having a plurality of second circuits, the plurality of second circuits formed on the flexible circuit substrate A lower surface; a conductive post formed in the at least one first through hole to electrically connect at least one of the first circuits and at least one of the second circuits; a highly conductive plating layer, which Plated on the first highly conductive circuit layer and the second highly conductive circuit layer; and a first protective layer coated on the highly conductive plating layer corresponding to each key and correspondingly plated on the first high A second through hole is formed at the position of the highly conductive plating layer on the conductive circuit layer, Each multi-color light emitting diode is electrically connected to the first circuits through a corresponding second through hole and through a highly conductive plating layer deposited on the first highly conductive circuit layer. The light-emitting keyboard according to claim 25, wherein the light source lamp board further comprises: a second protective layer coated on the first protective layer and each multi-color light-emitting diode. The illuminated keyboard according to claim 25, wherein the first highly conductive circuit layer and the second highly conductive circuit layer are composed of silver paste or copper paste material, and the highly conductive plating layer is composed of copper, silver or nickel material composition. The light-emitting keyboard according to claim 25, wherein an alloy bonding layer is formed between each multi-color light-emitting diode and the highly conductive plating layer. The luminous keyboard according to claim 28, wherein the alloy bonding layer is made of tin-bismuth alloy or tin-silver-copper alloy material. The light-emitting keyboard according to claim 28, wherein a first conductive anti-oxidation layer is formed between each alloy bonding layer and the highly conductive plating layer. The illuminated keyboard as recited in claim 30, wherein the first conductive anti-oxidation layer is composed of nickel or gold material. The light-emitting keyboard according to claim 30, wherein a second conductive anti-oxidation layer is formed between each alloy bonding layer and the first conductive anti-oxidation layer. The illuminated keyboard according to claim 32, wherein the first conductive antioxidant layer is composed of nickel material, and the second conductive antioxidant layer is composed of gold material. A light source lamp board suitable for providing light to a plurality of keys on a keyboard. The light source lamp board includes: a flexible circuit board having at least one first through hole; a plurality of multi-color light-emitting diodes, which Corresponding to a plurality of buttons, respectively, for generating light incident on the plurality of buttons; a first highly conductive circuit layer having a plurality of first circuits, the plurality of first circuits formed on one of the flexible circuit substrates A surface; a second highly conductive circuit layer having a plurality of second circuits formed on a lower surface of the flexible circuit substrate; a conductive post formed in the at least one first through hole Electrically connecting at least one of the first circuits and at least one of the second circuits; a highly conductive plating layer, which is attached to the first highly conductive circuit layer and the second highly conductive circuit layer And a first protective layer coated on the highly conductive plating layer and corresponding to each button and corresponding to the position of the highly conductive plating layer attached to the first highly conductive circuit layer is formed a second through hole, each A multi-color light emitting diode is electrically connected to the first circuits through a corresponding second through hole and through a highly conductive plating layer deposited on the first highly conductive circuit layer. The light source lamp panel according to claim 34, further comprising: a second protective layer coated on the first protective layer and each multi-color light-emitting diode. The light source lamp panel according to claim 34, wherein the first highly conductive circuit layer and the second highly conductive circuit layer are composed of silver paste or copper paste material, and the highly conductive plating layer is composed of copper, silver or nickel material Formed by. The light source lamp panel according to claim 34, wherein an alloy bonding layer is formed between each multi-color light-emitting diode and the highly conductive plating layer. The light source lamp panel according to claim 37, wherein the alloy bonding layer is made of tin-bismuth alloy or tin-silver-copper alloy material. The light source lamp panel according to claim 37, wherein a first conductive anti-oxidation layer is formed between each alloy bonding layer and the highly conductive plating layer. The light source lamp panel according to claim 39, wherein the first conductive anti-oxidation layer is composed of nickel or gold material. The light source lamp panel according to claim 39, wherein a second conductive antioxidant layer is formed between each alloy bonding layer and the first conductive antioxidant layer. The light source lamp panel according to claim 41, wherein the first conductive antioxidant layer is composed of nickel material, and the second conductive antioxidant layer is composed of gold material.

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