Low-power consumption variable color keyboard module structure
By using blue LED beads and color-changing areas in the keyboard module, the high cost of keyboard backlighting in existing technologies has been solved, achieving low-cost backlighting effects and good usability in low-light environments.
Patent Information
- Application Number
- CN202521687561.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-08
AI Technical Summary
Existing keyboard backlighting uses pure white LED beads or RGB LED chips, which are expensive, resulting in high keyboard prices and poor economic efficiency.
It uses blue LED beads combined with a color-changing area. The color-changing area absorbs blue light and emits white light, which shines through the keycaps to achieve the backlight effect, reducing the cost of the light-emitting components.
This improved keyboard usability in low-light environments, reduced keyboard production costs, and increased economic efficiency.
Smart Images
Figure CN224682989U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of keyboards, and more particularly to a low-power, color-changing keyboard module structure. Background Technology
[0002] In the current computer peripheral market, especially in the fields of laptops and high-end keyboards, keyboard backlighting has become a standard feature. It not only improves usability in low-light environments, but also becomes an important part of product design aesthetics and user experience.
[0003] The existing structure for implementing keyboard backlighting generally involves placing one or more white light-emitting diodes directly under each key, or using an all-in-one RGB LED containing red, green, and blue chips, so that the light emitted by the diodes passes through the characters on the keycaps to achieve the keyboard backlighting function.
[0004] Regarding the aforementioned technologies, directly using LED beads that can emit pure white light or using multi-color RGB LEDs containing red, green, and blue chips to emit pure white light is quite expensive, making the implementation of keyboard backlighting costly and resulting in expensive keyboards with poor economic efficiency. Utility Model Content
[0005] In order to reduce the cost of keyboards and improve their economic efficiency, this application provides a low-power variable color keyboard module structure.
[0006] The low-power variable color keyboard module structure provided in this application adopts the following technical solution:
[0007] A low-power variable color keyboard module structure includes a circuit assembly, several key assemblies and a light-emitting assembly. The circuit assembly includes a power supply circuit board, a reinforcing sheet and a thin film circuit sheet. The reinforcing sheet is disposed on one side of the power supply circuit board and the thin film circuit sheet is disposed on the side of the reinforcing sheet away from the power supply circuit board.
[0008] Each of the aforementioned button components is disposed on the circuit component. The button component includes a keycap and an elastomer. The keycap is provided with characters that can transmit light. The elastomer is located between the keycap and the thin film circuit sheet. One end of the elastomer is connected to the keycap, and the other end of the elastomer is connected to the thin film circuit sheet.
[0009] The light-emitting component includes several light-emitting modules and a color-changing area. Each light-emitting module is disposed on a power supply circuit board and electrically connected to the power supply circuit board. The light-emitting module can emit blue light. The color-changing area is disposed on the top of the light-emitting module. The color-changing area can absorb blue light and emit white light.
[0010] By adopting the above technical solution, when the keyboard module structure needs to emit white light, the power supply circuit board provides power to the light-emitting module, the light-emitting module emits blue light, and then the blue light is absorbed by the color-changing area. The color-changing area absorbs the blue light emitted by the light-emitting module and then emits pure white light, which shines through the characters set on the keycaps, thereby realizing the backlight effect of the keyboard. This allows users to observe the keyboard in low-light environments, improving usability in low-light environments. It also improves the problem that directly using LED beads that can emit pure white light or using multi-color RGB LEDs containing red, green, and blue chips to emit pure white light is too expensive, making the cost of implementing the keyboard backlight function too high, resulting in expensive keyboards and poor economic efficiency.
[0011] Optionally, the color-changing area may include a thin film layer, a light-shielding layer, and a color-changing layer. The thin film layer is disposed between the power supply circuit board and the reinforcing sheet. The light-shielding layer is a black light-shielding coating applied to the thin film layer. The color-changing layer is a color-changing coating applied to the side of the keycap near the thin film circuit sheet. The color-changing layer not covered by the light-shielding layer is the color-changing area.
[0012] Optionally, the color-changing area may include a thin film layer, a light-shielding layer, and a color-changing layer. The thin film layer is disposed between the power supply circuit board and the reinforcing sheet. The light-shielding layer is a black light-shielding coating applied to the thin film layer. The color-changing layer is a color-changing coating applied to the thin film layer. The color-changing area is the part of the color-changing layer not covered by the light-shielding layer.
[0013] Optionally, the light-shielding layer is located on one side of the thin film layer, and the color-changing layer is located on the other side of the thin film layer.
[0014] Optionally, when the color-changing area is located between the power supply circuit board and the reinforcing sheet, the color-changing layer is located at the top of the light-shielding layer, or the color-changing layer is located at the bottom of the light-shielding layer.
[0015] Optionally, the color-changing area further includes two adhesive layers, which are located on both sides of the film layer. One adhesive layer is used to bond and fix the color-changing area and the reinforcing sheet, and the other adhesive layer is used to bond and fix the power supply circuit board to the color-changing area.
[0016] Optionally, the reinforcing sheet has a plurality of through-hole light-transmitting slots, each of which is located on the top of each of the light-emitting modules, so that the light emitted by each of the light-emitting modules passes through the reinforcing sheet.
[0017] Optionally, the key assembly further includes scissor-switch pins, which are disposed between the keycap and the membrane circuit sheet, and are used to increase the keycap's rebound stability;
[0018] Each keycap is provided with multiple hooks for engaging and fixing with the scissor-switch feet, and the reinforcing plate is provided with hooks for engaging and fixing with the scissor-switch feet, so that one side of each scissor-switch foot is engaged and fixed with each keycap, and the other side of each scissor-switch foot is engaged and fixed with the reinforcing plate.
[0019] A manufacturing process for a low-power, color-changing keyboard module structure includes the following steps:
[0020] The power supply circuit board, reinforcing sheet, thin film circuit sheet, keycap, and elastomer are manufactured independently.
[0021] The power supply circuit board is equipped with backlight modules according to the position of the key characters on the keycaps. The number and position of the backlight modules are based on the number and position of the characters. The light emitted by the backlight modules is blue light.
[0022] Connect the reinforcing sheet to the power supply circuit board, connect the thin film circuit sheet to the reinforcing sheet, and position the color-changing area at the top of the light-emitting module.
[0023] Each elastomer is connected to the thin-film circuit sheet, and each keycap is connected to each elastomer.
[0024] Optionally, a color-changing coating may be applied to the side of the keycap closest to the thin-film circuit board to form a color-changing area;
[0025] Alternatively, the color-changing layer can be coated on one side of the film layer, and the light-shielding layer can be coated on the other side of the film layer. When coating the light-shielding layer, the areas where the color-changing layer needs to transmit light should be avoided, so that the areas where the color-changing layer does not need to transmit light are blocked by the light-shielding layer, so that the areas of the color-changing layer not blocked by the light-shielding layer form the color-changing area.
[0026] In summary, this application includes at least one of the following beneficial technical effects:
[0027] When the keyboard module needs to emit white light, the power supply circuit board provides power to the light-emitting module, which then emits blue light. This blue light is then absorbed by the color-changing area, which in turn emits pure white light. This light shines through the characters on the keycaps, thus achieving the keyboard's backlighting effect. This allows users to see the keyboard in low-light environments, improving usability in such conditions. It also addresses the issue of high costs associated with using pure white LEDs or multi-color RGB LEDs (containing red, green, and blue chips), which resulted in expensive keyboards and poor economic efficiency. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall structure of Example 1. Figure 1 ;
[0029] Figure 2 This is a schematic diagram of the overall structure of Example 1. Figure 2 ;
[0030] Figure 3 This is a schematic diagram of the power supply circuit board structure in Embodiment 1;
[0031] Figure 4 This is a schematic diagram of the partition structure in Embodiment 1;
[0032] Figure 5 This is a schematic diagram of the circuit component structure in Embodiment 1;
[0033] Figure 6 This is a schematic diagram of the button component structure in Embodiment 1;
[0034] Figure 7 This is a schematic diagram of the keycap structure in Example 1. Figure 1 ;
[0035] Figure 8 This is a schematic diagram of the keycap structure in Example 1. Figure 2 ;
[0036] Figure 9 This is a schematic diagram of the keycap structure in Example 1. Figure 3 ;
[0037] Figure 10 This is a schematic diagram of the color-changing area structure in Example 1. Figure 1 ;
[0038] Figure 11 This is a schematic diagram of the color-changing area structure in Example 1. Figure 2 ;
[0039] Figure 12 This is a schematic diagram of the overall structure of Embodiment 2;
[0040] Figure 13 This is a schematic diagram of the color-changing layer structure in Example 2;
[0041] Figure 14 This is the circuit diagram of the power supply circuit board of this application.
[0042] Explanation of reference numerals in the attached drawings: 1. Circuit assembly; 11. Power supply circuit board; 12. Spacer; 121. Clearance hole; 13. Reinforcing sheet; 14. Thin film circuit sheet; 2. Key assembly; 21. Keycap; 211. Character; 212. Hook; 22. Elastomer; 23. Scissor-switch; 3. Light-emitting assembly; 31. Light-emitting module; 32. Color-changing area; 321. Thin film layer; 322. Light-shielding layer; 323. Color-changing layer; 324. Adhesive layer. Detailed Implementation
[0043] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.
[0044] This application discloses a low-power, color-changing keyboard module structure.
[0045] Example 1.
[0046] Reference Figures 1 to 4 A low-power color-changing keyboard module structure includes a circuit assembly 1, several key assemblies 2, and a light-emitting assembly 3. Each key assembly 2 is disposed on the circuit assembly 1, and the light-emitting assembly 3 is disposed on the circuit assembly 1. The circuit assembly 1 includes a power supply circuit board 11, a partition 12, a reinforcing sheet 13, and a thin film circuit sheet 14. The partition 12 is fixedly disposed on one side of the power supply circuit board 11, the reinforcing sheet 13 is disposed on one side of the partition 12, and the thin film circuit sheet 14 is bonded and fixed to the side of the reinforcing sheet 13 away from the power supply circuit board 11. In this embodiment, the reinforcing sheet 13 can be a steel sheet or an iron sheet, and the reinforcing sheet 13 is selected as a steel sheet.
[0047] Reference Figures 5 to 9 The key assembly 2 includes a keycap 21, an elastomer 22, and scissor-switch feet 23. The keycap 21 has characters 211 that are translucent. The elastomer 22 is located between the keycap 21 and the membrane circuit sheet 14. One end of the elastomer 22 is connected to the keycap 21, and the other end is connected to the membrane circuit sheet 14. The elastomer 22 is elastic, so that when the keycap 21 is pressed towards the membrane circuit sheet 14, the elastomer 22 drives the keycap 21 to rebound and reset. The scissor-switch feet 23 are located between the keycap 21 and the membrane circuit sheet 14. The scissor-switch feet 23 are used to increase the rebound stability of the keycap 21. Each keycap 21 is provided with multiple hooks 212 for engaging and fixing with the scissor-switch feet 23, and the reinforcing plate 13 is provided with hooks 212 for engaging and fixing with the scissor-switch feet 23, so that one side of each scissor-switch foot 23 is engaged and fixed with each keycap 21, and the other side of each scissor-switch foot 23 is engaged and fixed with the reinforcing plate 13.
[0048] Reference Figure 10 and Figure 11The light-emitting component 3 includes several light-emitting modules 31 and a color-changing area 32. Each light-emitting module 31 is disposed on and electrically connected to the power supply circuit board 11. The light-emitting module 31 can emit blue light. In this embodiment, the light-emitting module 31 is selected as a blue LED bead. The LED bead is a top-emitting LED bead with a size of 0.5*0.15*0.12mm and a tolerance of ±0.1mm, thereby making the production price of the keyboard module more affordable. The number and position of the light-emitting modules 31 in this embodiment are as follows. Depending on the number and position of the characters 211 engraved on each keycap 21, the color-changing area 32 is located on the top of the light-emitting module 31. The color-changing area 32 can absorb blue light and emit white light. The partition 12 is provided with several clearance holes 121, each clearance hole 121 facing the light-emitting module 31, so that the light emitted by the light-emitting module 31 can pass through the partition 12. The reinforcing plate 13 has several through-through light-transmitting slots, each light-transmitting slot is located on the top of each light-emitting module 31, so that the light emitted by each light-emitting module 31 can pass through the reinforcing plate 13.
[0049] Reference Figure 10 and Figure 11 In this embodiment, the color-changing area 32 is disposed between the power supply circuit board 11 and the reinforcing sheet 13, specifically between the partition 12 and the reinforcing sheet 13. The color-changing area 32 includes a thin film layer 321, a light-shielding layer 322, and a color-changing layer 323. The thin film layer 321 is a transparent thin film with a thickness between 0.025 and 0.15 mm. The light-shielding layer 322 is coated with a black light-shielding paint on the thin film layer 321, and the color-changing layer 323 is coated with a color-changing paint on the thin film layer 321. The unshielded area of the color-changing layer 323 is the color-changing area 32. The light-shielding layer 322 is located on one side of the thin film layer 321, and the color-changing layer 323 is located on the other side of the thin film layer 321. When the color-changing area 32 is disposed between the power supply circuit board 11 and the reinforcing sheet 13, the color-changing layer 323 can be located at the top of the light-shielding layer 322, or the color-changing layer 323 can also be located at the bottom of the light-shielding layer 322.
[0050] Reference Figure 10 and Figure 11 The color-changing area 32 also includes two adhesive layers 324, which are located on both sides of the film layer 321. One adhesive layer 324 covers the surface of the light-shielding layer 322, and the other adhesive layer 324 covers the surface of the color-changing layer 323. One adhesive layer 324 is used to bond and fix the color-changing area 32 and the reinforcing sheet 13, and the other adhesive layer 324 is used to bond and fix the spacer 12 to the color-changing area 32.
[0051] The implementation principle of Embodiment 1 is as follows: When the keyboard module structure needs to emit white light, the power supply circuit board 11 provides power to the light-emitting module 31, the light-emitting module 31 emits blue light, and then the blue light is absorbed by the color-changing area 32. The color-changing area 32 absorbs the blue light emitted by the light-emitting module 31, and then the color-changing area 32 emits pure white light and passes through the characters 211 set on the keycap 21, thereby realizing the backlight effect of the keyboard. This allows users to observe the keyboard in low-light environments, improving usability in low-light environments. It also improves the problem that directly using LED beads that can emit pure white light or using multi-color RGB LEDs containing red, green and blue chips to emit pure white light is too expensive, making the cost of implementing the keyboard backlight function too high, resulting in expensive keyboards and poor economic efficiency.
[0052] Example 2.
[0053] Reference Figure 12 and Figure 13 The main difference between Example 2 and Example 1 lies in the different structure of the color-changing area 32.
[0054] Reference Figure 12 and Figure 13 The color-changing area 32 is located on the top of the thin film circuit sheet 14. The color-changing area 32 may include a thin film layer 321, a light-shielding layer 322, and a color-changing layer 323. The thin film layer 321 is selected as a transparent film, and the thickness of the thin film area is between 0.025 and 0.15 mm. The light-shielding layer 322 is a black light-shielding coating applied to any side of the thin film layer 321. The color-changing layer 323 is a color-changing coating applied to the side of the keycap 21 near the thin film circuit sheet 14 to form the color-changing area 32. In this embodiment, the area of the thin film layer 321 directly opposite the color-changing layer 323 is not coated with the light-shielding layer 322.
[0055] Reference Figure 12 and Figure 13 The color-changing area 32 also includes two adhesive layers 324, which are located on both sides of the film layer 321. One adhesive layer 324 covers the surface of the light-shielding layer 322, and the other adhesive layer 324 covers the side of the film layer 321 away from the light-shielding layer 322. One adhesive layer 324 is used to bond and fix the color-changing area 32 and the reinforcing sheet 13, and the other adhesive layer 324 is used to bond and fix the spacer 12 to the color-changing area 32.
[0056] A manufacturing process for a low-power, color-changing keyboard module structure includes the following steps:
[0057] The power supply circuit board 11, reinforcing sheet 13, thin film circuit sheet 14, keycap 21 and elastomer 22 are manufactured independently.
[0058] The power supply circuit board 11 is equipped with light-emitting modules 31 according to the position of the key characters 211 on the keycap 21. The number and position of the light-emitting modules 31 are determined according to the number and position of the characters 211. The light emitted by the light-emitting modules 31 is blue light.
[0059] The reinforcing sheet 13 is connected to the power supply circuit board 11, the thin film circuit sheet 14 is connected to the reinforcing sheet 13, and the color-changing area 32 is located on top of the light-emitting module 31.
[0060] Each elastomer 22 is connected to the thin film circuit sheet 14, and each keycap 21 is connected to each elastomer 22.
[0061] A color-changing coating is applied to the side of the keycap 21 near the thin film circuit sheet 14 to form a color-changing area 32;
[0062] Alternatively, a color-changing layer 323 may be coated on one side of a thin film layer 321, and a light-shielding layer 322 may be coated on the other side of a thin film layer 321. When the light-shielding layer 322 is coated, the areas of the color-changing layer 323 that need to transmit light are avoided, so that the areas of the color-changing layer 323 that do not need to transmit light are blocked by the light-shielding layer 322, so that the areas of the color-changing layer 323 that are not blocked by the light-shielding layer 322 form the color-changing area 32.
[0063] like Figure 14 As shown, this application also provides a circuit diagram of the power supply circuit board 11, which can be applied to the power supply circuit board 11 of the above embodiments. Specifically, the power supply circuit board 11 includes a connection terminal J1 and multiple resistors, and the light-emitting module 31 includes multiple LEDs. For example, the power supply circuit board 11 includes four resistors, such as... Figure 14 As shown, resistors R1, R2, R3, and R4 are resistors respectively. The light-emitting module 31 includes LEDs 11 to LED1n, LED21, LED22, and LED31 to LED3m, where n and m are integers greater than or equal to 2. The connection terminal J1 is used to connect the power supply voltage. One end of each resistor from R1 to R4 is connected to the power output pin of the connection terminal J1. The other end of resistor R1 is connected to the positive terminal of LEDs 11 to LED1n. The other end of resistor R2 is connected to the positive terminal of LED21. Resistor R3 is connected to the positive terminal of LED22. The other end of resistor R4 is connected to the positive terminal of LEDs 31 to LED3m. The negative terminals of LEDs 11 to LED1n, LED21, LED22, and LED31 to LED3m are all connected to the ground pin of the connection terminal J1.
[0064] Therefore, in the embodiments of this application, one resistor can control one LED light, or one resistor can control multiple LED lights; there is no limitation in this regard. Resistors R1 to R4 can limit the current to the LED lights, and the resistance values of each resistor can be selected according to the required current.
[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A low-power, color-changing keyboard module structure, characterized in that: It includes a circuit assembly (1), several button assemblies (2) and a light-emitting assembly (3). The circuit assembly (1) includes a power supply circuit board (11), a reinforcing sheet (13) and a thin film circuit sheet (14). The reinforcing sheet (13) is disposed on one side of the power supply circuit board (11), and the thin film circuit sheet (14) is disposed on the side of the reinforcing sheet (13) away from the power supply circuit board (11). Each of the key components (2) is disposed in the circuit component (1). The key component (2) includes a keycap (21) and an elastomer (22). The keycap (21) is provided with a character (211) that can transmit light. The elastomer (22) is located between the keycap (21) and the thin film circuit sheet (14). One end of the elastomer (22) is connected to the keycap (21), and the other end of the elastomer (22) is connected to the thin film circuit sheet (14). The light-emitting component (3) includes several light-emitting modules (31) and a color-changing area (32). Each light-emitting module (31) is disposed on the power supply circuit board (11) and electrically connected to the power supply circuit board (11). The light-emitting module (31) can emit blue light. The color-changing area (32) is disposed on the top of the light-emitting module (31). The color-changing area (32) can absorb blue light and emit white light.
2. The low-power variable color keyboard module structure according to claim 1, characterized in that: The color-changing area (32) may include a thin film layer (321), a light-shielding layer (322), and a color-changing layer (323). The thin film layer (321) is disposed between the power supply circuit board (11) and the reinforcing sheet (13). The light-shielding layer (322) is coated with black light-shielding paint on the thin film layer (321). The color-changing layer (323) is coated with color-changing paint on the side of the keycap (21) near the thin film circuit sheet (14). The color-changing layer (323) that is not covered by the light-shielding layer (322) is the color-changing area (32).
3. The low-power variable color keyboard module structure according to claim 1, characterized in that: The color-changing area (32) may include a thin film layer (321), a light-shielding layer (322), and a color-changing layer (323). The thin film layer (321) is disposed between the power supply circuit board (11) and the reinforcing sheet (13). The light-shielding layer (322) is coated with black light-shielding paint on the thin film layer (321). The color-changing layer (323) is coated with color-changing paint on the thin film layer (321). The color-changing layer (323) not covered by the light-shielding layer (322) is the color-changing area (32).
4. The low-power variable color keyboard module structure according to claim 3, characterized in that: The light-shielding layer (322) is located on one side of the thin film layer (321), and the color-changing layer (323) is located on the other side of the thin film layer (321).
5. The low-power variable color keyboard module structure according to claim 4, characterized in that: When the color-changing area (32) is disposed between the power supply circuit board (11) and the reinforcing sheet (13), the color-changing layer (323) is located on top of the light-shielding layer (322), or the color-changing layer (323) is located at the bottom of the light-shielding layer (322).
6. The low-power variable color keyboard module structure according to claim 3, characterized in that: The color-changing area (32) also includes two adhesive layers (324), which are located on both sides of the film layer (321). One adhesive layer (324) is used to bond and fix the color-changing area (32) and the reinforcing sheet (13), and the other adhesive layer (324) is used to bond and fix the power supply circuit board (11) to the color-changing area (32).
7. The low-power variable color keyboard module structure according to claim 1, characterized in that: The reinforcing sheet (13) has several through-hole light-transmitting slots, each of which is located on the top of each light-emitting module (31) so that the light emitted by each light-emitting module (31) passes through the reinforcing sheet (13).
8. The low-power variable color keyboard module structure according to claim 1, characterized in that: The key assembly (2) also includes scissor arms (23), which are disposed between the keycap (21) and the membrane circuit sheet (14). The scissor arms (23) are used to increase the rebound stability of the keycap (21). Each keycap (21) is provided with multiple hooks (212) for engaging and fixing with the scissor legs (23), and the reinforcing plate (13) is provided with hooks (212) for engaging and fixing with the scissor legs (23), so that one side of each scissor leg (23) is engaged and fixed with each keycap (21), and the other side of each scissor leg (23) is engaged and fixed with the reinforcing plate (13).