CN109036929A - Illuminated keyboard and its light source lamp plate - Google Patents

Abstract

The present invention discloses a kind of illuminated keyboard and its light source lamp plate.Illuminated keyboard includes bottom plate, multiple keys and light source lamp plate.Light source lamp plate is set between bottom plate and key or is set under bottom plate and include multiple multi-color LEDs, first and second conductive paste line layer, conductive column, metal layer and the first protective layer of flexible circuit board with first through hole, corresponding multiple keys.First and second conductive paste line layer is respectively formed in the upper and lower surface of flexible circuit board.Conductive column is formed in first through hole to be electrically connected first and second conductive paste line layer.Metal layer plating is attached on first and second conductive paste line layer.First protective layer is coated on metal layer and has multiple second through-holes, and multi-color LED is set to plating by the second through-hole and is attached on the metal layer of the first conductive paste line layer to be electrically connected the first conductive paste line layer.The present invention can solve the problems, such as that the plate thickness of LED circuitboard is not easy to reduce and be unfavorable for illuminated keyboard slimming design.

Description

Luminous keyboard and its light source light board

technical field

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

Background technique

Generally speaking, in order to make the keyboard have the function of lighting the keys, the current common design is to directly arrange an LED circuit board with a plurality of LEDs corresponding to each key on the keyboard bottom plate, whereby the LEDs can emit light to the corresponding Corresponding keycaps can produce button lighting effect. In addition, this design can also use the integrated circuit control chip on the LED circuit board to control the lighting of each LED in the form of telecommunications transmission, so that the keyboard can have more varied buttons. Glowing visual effects.

However, because the circuit substrate used in the LED circuit board with the integrated circuit control chip is usually made of hardened resin material with high material cost due to the consideration of the process yield, the above design will not only cause defects in the LED circuit board. The thickness of the plate is not easy to reduce, which is not conducive to the thin design of the keyboard, and will also lead to high manufacturing costs of the LED circuit board.

Contents of the invention

Therefore, the purpose of the present invention is to provide a light source lamp board with conductive paste circuit layers formed on the upper and lower surfaces of the flexible circuit board and a light-emitting keyboard using the same, so as to solve the above problems.

In order to achieve the above object, the present invention proposes a light source lamp board, which is suitable for providing light to a plurality of keys on the keyboard, the light source lamp board includes: a flexible circuit board, a plurality of multi-color light-emitting diodes, a first conductive paste circuit layer, a second conductive paste circuit layer, a conductive pillar, a metal layer and a first protective layer. The flexible circuit substrate has at least one first through hole; a plurality of multicolor light emitting diodes are respectively corresponding to the plurality of keys, and the plurality of multicolor light emitting diodes are used to generate light incident on the plurality of keys; the first conductive paste circuit layer has a plurality of first circuits, the plurality of first circuits are formed on the upper surface of the flexible circuit substrate; the second conductive paste circuit layer has a plurality of second circuits, and the plurality of second circuits are formed on the flexible circuit substrate The lower surface; a conductive column is formed in the at least one first through hole to electrically connect at least one of the plurality of first circuits and at least one of the plurality of second circuits; a metal layer is plated on the first through hole On a conductive paste circuit layer and the second conductive paste circuit layer; the first protective layer is coated on the metal layer and the first protective layer corresponds to the plurality of buttons and is correspondingly plated on the first conductive paste circuit layer A plurality of second through holes are formed at the position of the metal layer, and each multicolor light-emitting diode is disposed on the metal layer plated on the first conductive paste circuit layer through the corresponding second through holes to be electrically connected to the metal layer. Multiple first lines.

As an optional technical solution, the flexible circuit substrate extends outward to form at least one flat cable board part, and the light source lamp board further includes: a connection circuit layer and a control circuit board. The connection circuit layer is formed on the at least one flat cable board part and the connection circuit layer is electrically connected to the plurality of multi-color LEDs through the metal layer; the control circuit board is connected to one end of the flat cable board part to be electrically connected to the The circuit layer is connected, and the control circuit board is used to transmit electrical signals to the plurality of multi-color LEDs through the connection layer to control the light emission of the plurality of multi-color LEDs.

As an optional technical solution, the control circuit board is laminated under the light source lamp board.

As an optional technical solution, the flexible circuit substrate is made of polyethylene terephthalate or polyimide.

As an optional technical solution, the first protective layer is made of ultraviolet thermosetting insulating glue material.

As an optional technical solution, the light source light board further includes: a second protective layer. The second protection layer is coated on the first protection layer and each multi-color LED.

As an optional technical solution, the first protective layer and the second protective layer are formed with hollow slots along the at least one first through hole.

As an optional technical solution, the plurality of keys form a key area, and the area of the flexible circuit substrate is equal to the area of the key area.

As an optional technical solution, the first conductive paste circuit layer and the second conductive paste circuit layer are silver paste circuit layers, the metal layer is a copper-plated layer, and the conductive column is made of silver paste material or a laminated material of copper and silver paste composed of.

As an optional technical solution, the light source lamp board also 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 light-emitting diodes through the metal layer, and the control circuit board It is used for transmitting electrical signals to the plurality of multi-color LEDs to control the light emission of the plurality of multi-color LEDs.

In addition, the present invention also proposes a luminous keyboard, which includes: a base plate, a plurality of keys, and the aforementioned light source light board. A plurality of buttons are arranged on the bottom plate, each button includes: a keycap and a lifting mechanism, the lifting mechanism is arranged between the bottom plate and the keycap, and the keycap moves up and down relative to the bottom plate through the lifting mechanism; the light source lamp The board is arranged between the bottom board and the keys or the light source lamp board is arranged under the bottom board.

To sum up, the luminous keyboard and its light source light board of the present invention are formed on the flexible board by only forming the circuit for electrical transmission (that is, the first conductive paste circuit layer, the second conductive paste circuit layer and the metal layer) respectively. The design of the upper and lower surfaces of the circuit substrate, so that the present invention can utilize the flexibility of the flexible circuit substrate (the minimum plate thickness that the flexible material can achieve in actual manufacturing is less than the minimum that the hard board material can achieve in actual manufacturing plate thickness) and the material cost of the flexible circuit substrate is lower than the material cost of the circuit hard 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 further reduce the manufacturing cost of the luminous keyboard.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of a light-emitting keyboard according to an embodiment of the present invention.

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

FIG. 3 is an enlarged top view of the light source lamp panel in FIG. 2 .

FIG. 4 is a schematic partial cross-sectional view of the light source lamp panel in FIG. 3 along the 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 partial cross-sectional schematic diagram of the forming process of the light source lamp panel according to another embodiment of the present invention.

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

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

Detailed ways

The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "side", etc., are only referring to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

In the following embodiments, the same parts are denoted by the same symbols in different drawings.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic perspective view of a light-emitting keyboard 10 according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the light-emitting keyboard 10 in FIG. As shown in FIG. 2 , the luminous keyboard 10 includes a base plate 12 , a plurality of keys 14 and a light source lamp plate 16 . A plurality of buttons 14 are arranged on the bottom plate 12 for the user to press to perform the function that the user wants to input. Each button 14 includes a keycap 18 and a lift mechanism 20, and the lift mechanism 20 is arranged between the bottom plate 12 and the keycap 18. 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 can be preferably designed as a scissor mechanism as shown in FIG. 2 (but not limited thereto, it can be changed to other common keycap lifting design, such as magnetic design, etc.) And it 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 scissors foot connection design of the lifting mechanism 20 .

As for the lighting design of the light source lamp panel 16, please refer to FIG. 2, FIG. 3 and FIG. 4. FIG. 3 is an enlarged top view of the light source lamp panel 16 in FIG. 2, 3 and 4, it can be seen that the light source lamp board 16 is arranged on the base plate 12, and the light source lamp board 16 includes a flexible circuit board 22, a plurality of multicolor light-emitting diodes 24, and conductive columns 25 , the first conductive paste wiring layer 26 , the second conductive paste wiring layer 28 , the metal layer 30 and the first protection layer 32 . The flexible circuit substrate 22 can preferably be made of flexible circuit substrate material (such as polyethylene terephthalate (polyethylene terephthalate, PET) or polyimide (polyimide, PI), but not limited thereto. ) and the flexible circuit substrate 22 has at least one first through hole 23 (the number and configuration thereof depend on the actual circuit design requirements of the light source lamp board 16, and are not limited to FIG. 3 ). The plurality of multicolor light emitting diodes 24 can preferably be red, green and blue light emitting diodes (RGB LEDs) and correspond to the plurality of keys 14 respectively, whereby the multicolor light emitting diodes 24 can be used to emit light and enter the corresponding key caps 18, So as to achieve the button luminous effect.

In actual operation, the first conductive paste circuit layer 26 and the second conductive paste circuit layer 28 may contain conductive particles formed by one or a combination of silver, copper, gold, aluminum, graphite, carbon nanotubes, and graphene. conductive paste layer. The metal layer 30 can be single-layer Cu layer, multi-layer Ag/Au layer/multi-layer Ag/Au/Sn/Ni layer/single-layer Cu layer, single-layer Sn layer/single-layer Cu layer, single-layer Ag layer/single-layer Cu layer, single Au layer/single Cu layer, single Ag layer/single Ni layer/single Cu layer, single Au layer/single Ni layer/single Cu layer, single Sn layer/single layer Au layer/single Ag layer/single Ni layer/single Cu layer, etc.

The first conductive paste line layer 26 can have a plurality of first lines 27 (the number and configuration end depends on the actual circuit design requirements of the light source lamp panel 16, not limited to FIG. 3 ), and the plurality of first lines 27 can be compared It is preferably formed on the upper surface S1 of the flexible circuit substrate 22 using a conductive paste printing process. Similarly, the second conductive paste circuit layer 28 may have a plurality of second circuits 29 formed on the lower surface S2 of the flexible circuit substrate 22, At least one of the plurality of first lines 27 can 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 line through-hole connection configuration end-view light source According to the actual circuit design requirements of the lamp board 16, not limited to FIG. 3 ) to establish the electrical connection between the first circuit 27 and the second circuit 29 of the flexible circuit In this embodiment, the metal layer 30 can be plated on the first conductive paste circuit layer 26 and the second conductive paste circuit layer 28 (in actual operation, the metal layer 30 can be formed by The electroless plating process is deposited on the first conductive paste circuit layer 26 and the second conductive paste circuit layer 28), and the first protective layer 32 may preferably be made of ultraviolet (UV) thermosetting insulating adhesive material (but not limited thereto ) and coated on the metal layer 30, thereby producing the effect of preventing the oxidation of the metal layer 30.

In more detail, as can be seen from FIG. 4 , the first protection layer 32 may be formed with a plurality of second through holes 31 at positions corresponding to the plurality of keys 14 and the metal layer 30 plated on the first conductive paste circuit layer 26 Each multicolor LED 24 can be arranged on the metal layer 30 plated on the first conductive paste circuit layer 26 through the corresponding second through hole 31 to be electrically connected to the first circuit 27, so that the light source lamp board 16 It can pass through the metal layer 30 (in this embodiment, the first conductive paste circuit layer 26 is, for example, a silver paste circuit layer, and the metal layer 30 is a copper-plated layer. Compared with the silver paste circuit, the copper circuit will not be distorted due to the length of the circuit. problems with different impedances) to conduct electrical transmission to control the light emission and color change of multiple multi-color LEDs 24 . In practical applications, the light source lamp panel 16 may further include a second protective layer 33, and the second protective layer 33 is coated on the first protective layer 32 and each multicolor light-emitting diode 24 to generate anti-static discharge (Electrostatic Discharge, ESD ), dustproof and waterproof protection.

Here, the above-mentioned steps of forming the first conductive paste circuit layer 26, the second conductive paste circuit layer 28, the conductive pillars 25, the metal layer 30, the first protective layer 32 and the second protective layer 33 on the flexible circuit board 22 are carried out. illustrate. It can be seen from FIG. 4 that, firstly, the first conductive paste circuit layer 26 and the second conductive paste circuit layer 28 can be formed on the upper surface S1 and the lower surface S2 of the flexible circuit board 22 by a conductive paste printing process, and the metal layer 30 can be plated. Attached (for example, by electroless plating process, etc.) on the first conductive paste circuit layer 26 and the second conductive paste circuit layer 28, in this embodiment, the first conductive paste circuit layer 26 and the second conductive paste circuit layer 28 are silver paste The circuit layer, the metal layer 30 is a copper plating layer, during this process, the silver paste and copper can form a conductive column 25 along the first through hole 23 (as shown in Figure 4, that is to say, in this embodiment, conductive pillar 25 is composed of silver paste and copper laminated material), so as to establish the electrical connection between the first circuit 27 and the second circuit 29; next, the first protective layer 32 can be coated on the metal layer 30 by printing process and formed with The second through hole 31, whereby the multi-color light-emitting diode 24 can be arranged on the metal layer 30 through the second through hole 31 (for example, by soldering, etc.) to be electrically connected to the first circuit 27; finally, the second protective layer 33 can be coated on the first protective layer 32 and the multi-color LEDs 24 by a printing process, so that the forming process of the light source lamp panel 16 can be completed. It should be noted that, as shown in FIG. 4 , in the process of sequentially forming the first protective layer 32 and the second protective layer 33 , the first protective layer 32 and the second protective layer 33 can preferably be formed along the first The through hole 23 is formed with a hollow slot 40 (but not limited thereto, in another embodiment, it can also adopt the design that the first protective layer 32 and the second protective layer 33 can fill the first through hole 23 sequentially ).

In addition, as shown in FIG. 3 , the flexible circuit board 22 extends outward to form at least one flat cable plate portion 34 (three are shown in FIG. 3 , but not limited thereto), and the light source lamp plate 16 can also be Including the connection circuit layer 36 and the control circuit board 38, the connection circuit layer 36 is formed on the flat cable board part 34 and electrically connected to a plurality of multi-color LEDs 24 via the metal layer 30, and the control circuit board 38 is connected to the flat cable board part 34 One end (for example, by plugging a flat cable into the port) is electrically connected to the connecting line layer 36, whereby the control circuit board 38 can transmit electrical signals to a plurality of multi-color LEDs 24 through the connecting line layer 36 To control the light emission of multiple multi-color LEDs 24 (for example, to control multiple multi-color LEDs 24 to emit light in time-division or to sequentially generate different colors of light, etc., the related circuit control design and principle are common in the prior art, and will not be repeated here. repeat), so that the luminous keyboard 10 can have more varied key luminous visual effects. In addition, in terms of key trigger design, it can be seen from FIG. 2 that the luminous keyboard 10 may further include a thin film circuit board 21, and the thin film circuit board 21 is arranged on the light source lamp board 16, whereby when the key cap 18 is pressed by an external force, the key cap 18 moves downward with the lifting mechanism 20, so that the corresponding membrane switch on the thin film circuit board 21 is triggered, so that the button 14 can perform the function that the user wants to input. As for the connection between the button 14 and the thin film circuit board 21 The related description 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.) is common in the prior art and will not be repeated here.

In this way, only the lines used for electrical transmission (ie, the first conductive paste wiring layer 26 , the second conductive paste wiring layer 28 and the metal layer 30 ) are respectively formed on the upper and lower surfaces S1 , S2, and the control circuit board 38 that is used to control the light emission of the multi-color light-emitting diode 24 is externally connected to the design of one side of the flexible circuit substrate 22. In addition, as can be seen from FIGS. 1 and 3, a plurality of buttons 14 can be formed. The area of the button area 15 and the flexible circuit substrate 22 is approximately equal to the area of the button area 15 (because the control circuit board 38 only needs to be configured to control the integrated circuit control chip for controlling the luminous change of the multicolor light emitting diode 24 without disposing a plurality of multicolor LEDs 24 and the electrical transmission lines connected to each multicolor LEDs 24 respectively, therefore, the area of the control circuit board 38 can be smaller than the area of the flexible circuit substrate 22), the present invention can utilize the flexible circuit substrate Flexibility (the minimum sheet thickness that flexible materials can achieve in actual manufacturing is smaller than the minimum sheet thickness that hard board materials can achieve in actual manufacturing) and the material cost of flexible circuit boards is lower than that of circuit hard boards cost, thereby effectively solving the problem in the prior art that the thickness of the light-emitting diode circuit board is difficult to reduce, which is not conducive to the thin design of the light-emitting keyboard, 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 the control function capable of controlling whether the multi-color LEDs 24 emit light or not, that is to say, the light source lamp board 16 only needs to have an electrical line transmission function and the luminous control function is provided by an electronic device (such as a notebook computer) connected to the luminous keyboard 10, the control circuit board 38 is a component that can be omitted, so as to further simplify the circuit board design of the luminous keyboard 10 and reduce the weight of the luminous keyboard. 10 manufacturing costs. In addition, in practical applications, the control circuit board 38 can be laminated under the light source lamp board 16 by utilizing the flexibility of the flexible circuit board 22 , so as to further reduce the configuration space occupied by the light source lamp board 16 . It should be noted that the configuration of the control circuit board is not limited to the above-mentioned embodiments, and it can also adopt a design in which the configuration of the flat cable plate and the connection circuit layer is omitted, and the control circuit board is directly laminated under the flexible circuit board, so as to improve the flexibility of the circuit board. To further simplify the circuit board design of the luminous keyboard, in short, in the embodiment in which the configuration of the flat cable board part and the connection line layer are omitted, the control circuit board can be directly laminated under the flexible circuit board (for example, with an anisotropic Conductive adhesive (Anisotropic Conductive Film, ACF) paste or hot bar welding (Hot bar, etc.) to electrically connect to the multi-color light-emitting diode through the metal layer, whereby the control circuit board can be used to transmit electricity through the metal layer The signal is sent to the multi-color LED to control the light emission of the multi-color LED.

In addition, the arrangement of the metal layer and the first conductive paste wiring layer and the second conductive paste wiring layer is not limited to the above-mentioned embodiments. For example, please refer to FIG. 5 , which is proposed according to another embodiment of the present invention. Partial cross-sectional schematic diagram of the light source lamp board 16 ′. The components mentioned in this embodiment and the above-mentioned embodiments have the same numbers, which means that they have the same structure or function, and the related descriptions will not be repeated here. It can be seen from FIG. 5 that the light source lamp board 16' includes a flexible circuit substrate 22, a plurality of multicolor light-emitting diodes 24 (only one is shown in FIG. 5 ), conductive columns 25', a first conductive paste circuit layer 26', a second The conductive paste wiring layer 28 ′, the metal layer 30 , the first protection layer 32 and the second protection layer 33 . The first conductive paste circuit layer 26' may have a plurality of first circuits 27', and the plurality of first circuits 27' may preferably be formed on the upper surface S1 of the flexible circuit board 22 by using a conductive paste printing process. The second conductive paste circuit layer 28 ′ may have a plurality of second circuits 29 ′ formed on the lower surface S2 of the flexible circuit substrate 22 . It should be noted that, as shown in FIG. 5 , in the above-mentioned process of forming the first circuit 27 ′ and the second circuit 29 ′, the conductive paste can preferably fill (but not limited to) the first through hole 23 to The conductive column 25' is formed (that is, in this embodiment, the conductive column 25' is made of conductive paste material), so as to establish the electrical connection between the first circuit 27' and the second circuit 29'.

In another embodiment, please refer to FIG. 6 , which is a partial cross-sectional schematic diagram of the molding process of the light source lamp panel 16 ″ proposed according to another embodiment of the present invention. Components with the same number represent that they have the same structure or function, and their related descriptions will not be repeated here. As can be seen from FIG. Only one is shown in FIG. 6 ), the conductive pillar 25 ′, the first conductive paste circuit layer 26 ″, the second conductive paste circuit layer 28 ″, the metal layer 30 and the protection layer 32 . The first conductive paste circuit layer 26" can have a plurality of first circuits 27" and the second conductive paste circuit layer 28" can have a plurality of second circuits 29", as shown in Figure 6 (a), the first A circuit 27 ″ and a second circuit 29 ″ can preferably be formed on the upper surface S1 and the lower surface S2 of the flexible circuit board 22 by using a conductive paste printing process, and the metal layer 30 can be plated on the first conductive paste circuit layer 26" and the second conductive paste circuit layer 28", and then, as shown in Figure 6 (b), it can conduct another conductive paste printing process so that the conductive paste fills the first through hole 23 and The first circuit 27 ″ and the second circuit 29 ″ are electrically connected to each other via the conductive post 25 ′ to establish a circuit connection of the flexible circuit substrate 22 .

In addition, the arrangement of the thin film circuit board, the light source lamp board and the bottom board is not limited to the above-mentioned embodiments. For example, please refer to FIG. 7 , which is a partial cross-sectional view of a luminous keyboard 100 according to another embodiment of the present invention. have the same structure or function, and their related descriptions will not be repeated here. It can be seen from FIG. 7 that the luminous keyboard 100 includes a plurality of keys 14 (only one is shown in FIG. 7 ), a light source lamp board 16, a bottom board 102 and a thin film circuit board 104. The thin film circuit board 104 is arranged on the bottom board 102, and the light source lamp board 16 Attached under the bottom plate 102 and the multi-color LEDs 24 can be penetrated in the through holes 103 of the bottom plate 102, thereby effectively reducing the configuration space occupied by the LEDs inside the light-emitting keyboard and facilitating the thinner design of the light-emitting keyboard.

In another embodiment, please refer to FIG. 8 , which is a partial cross-sectional view of a luminous keyboard 150 according to another embodiment of the present invention. The components in this embodiment have the same numbers as those mentioned in the above embodiments. , representing that they have the same structure or function, and their related descriptions will not be repeated here. It can be seen from FIG. 8 that the luminous keyboard 150 includes a plurality of keys 14 (only one is shown in FIG. 8 ), a light source lamp board 16, a bottom board 12 and a thin film circuit board 152, and the thin film circuit board 152 is arranged between the bottom board 12 and the light source lamp board 16. In this way, when the keycap 18 is pressed by an external force, the keycap 18 moves downward along with the lifting mechanism 20, so that the corresponding membrane switch on the thin film circuit board 152 is triggered, so that the key 14 can perform what the user wants. input function.

To sum up, the luminous keyboard and its light source light board of the present invention are formed on the flexure by only forming the circuit for electrical transmission (ie, the first conductive paste circuit layer, the second conductive paste circuit layer, and the metal layer) respectively. The design of the upper and lower surfaces of the flexible circuit substrate, so that the present invention can utilize the flexibility of the flexible circuit substrate (the minimum plate thickness that the flexible material can achieve in actual manufacturing is smaller than that of the hard board material in actual manufacturing The minimum plate thickness) and the material cost of the flexible circuit substrate are lower than the material cost of the circuit rigid board, so as to effectively solve the problem that the thickness of the light-emitting diode circuit board is not easy to reduce and is not conducive to the thin design of the light-emitting keyboard mentioned in the prior art. problem, and can further reduce the manufacturing cost of the luminous keyboard.

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

Claims (11)

1. A light source light board, which is suitable for providing light to a plurality of keys on a keyboard, characterized in that the light source light board comprises: A flexible circuit substrate having at least one first through hole; A plurality of multicolor light emitting diodes, which respectively correspond to the plurality of keys, and the plurality of multicolor light emitting diodes are used to generate light incident on the plurality of keys; a first conductive paste circuit layer, which has a plurality of first circuits formed on the upper surface of the flexible circuit substrate; a second conductive paste circuit layer, which has a plurality of second circuits formed on the lower surface of the flexible circuit substrate; a conductive post formed in the at least one first through hole to electrically connect at least one of the plurality of first circuits and at least one of the plurality of second circuits; a metal layer plated on the first conductive paste wiring layer and the second conductive paste wiring layer; and A first protection layer, which is coated on the metal layer, and the first protection layer is formed with a plurality of second through holes corresponding to the positions of the plurality of buttons and the metal layer plated on the first conductive paste circuit layer Each multi-color LED is disposed on the metal layer plated on the first conductive paste circuit layer through a corresponding second through hole so as to be electrically connected to the plurality of first circuits. 2. The light source lamp board according to claim 1, wherein the flexible circuit board extends outward to form at least one flat cable board portion, and the light source lamp board further comprises: a connection circuit layer formed on the at least one flat cable board part and electrically connected to the plurality of multi-color light emitting diodes via the metal layer; and a control circuit board, which is connected to one end of the flat cable plate to be electrically connected to the connection line layer, and is used to transmit electrical signals to the plurality of multi-color light emitting diodes through the connection line layer to perform the multi-color light-emitting diodes. Lighting control of multi-color LEDs. 3. The light source lamp board according to claim 2, wherein the control circuit board is laminated under the light source lamp board. 4. The light source lamp board according to claim 1, wherein the flexible circuit board is made of polyethylene terephthalate or polyimide. 5. The light source lamp panel according to claim 1, wherein the first protective layer is made of ultraviolet thermosetting insulating glue. 6. The light source lamp board according to claim 1, characterized in that: the light source lamp board further comprises: The second protection layer is coated on the first protection layer and each multi-color LED. 7 . The light source lamp panel according to claim 6 , wherein the first protective layer and the second protective layer are formed with hollow slots along the at least one first through hole. 8 . The light source lamp board according to claim 1 , wherein the plurality of keys form a key area, and the area of the flexible circuit substrate is equal to the area of the key area. 9. The light source lamp panel according to claim 1, characterized in that: the first conductive paste circuit layer and the second conductive paste circuit layer are silver paste circuit layers, the metal layer is a copper-plated layer, and the conductive column is composed of Silver paste material or copper and silver paste laminated material. 10. The light source lamp board according to claim 1, characterized in that: the light source lamp board further comprises a control circuit board, and the control circuit board is laminated under the flexible circuit board to be electrically connected to the multiple through the metal layer. The control circuit board is used to transmit electrical signals to the multiple multi-color LEDs to control the light emission of the multiple multi-color LEDs. 11. A luminous keyboard, characterized in that it comprises: floor; A plurality of buttons are arranged on the bottom plate, and each button includes: keycaps; and an elevating mechanism, which is arranged between the base plate and the keycap, and the keycap moves up and down relative to the base plate via the elevating mechanism; and The light source lamp board according to any one of claims 1 to 10, wherein the light source lamp board is disposed between the base plate and the plurality of keys or the light source lamp board is disposed under the base plate.