Light-emitting module of touch panel

Abstract

The utility model provides a light-emitting module of a touchpad, which is used for enabling the periphery of the touchpad to be in a light-emitting state and comprises a frame-shaped reflector plate, a frame-shaped light guide plate, a light source component and a glass upper cover. The frame-shaped light guide plate is arranged on the frame-shaped reflector plate in a stacked mode, the inner periphery of the frame-shaped light guide plate is recessed to form at least one circular-truncated-cone-shaped containing hole, LED light sources of the light source assembly are arranged on the circuit substrate, the circuit substrate is arranged on the frame-shaped light guide plate in a stacked mode, the LED light sources are assembled in the circular-truncated-cone-shaped containing hole, and the glass upper cover is arranged on the circuit substrate. Therefore, a uniform light-emitting effect can be formed on the periphery of the touch panel.

Description

Technical Field

[0001] This utility model relates to the field of light-emitting product technology, and in particular to a light-emitting module for a touch panel. Background Technology

[0002] Touchpads are input devices for modern computers, providing users with intuitive swiping, clicking, and multi-finger gesture operations, making them an important tool for daily operations, especially common in laptops. As laptop designs become thinner and lighter with higher integration, touchpad functionality continues to evolve, with the application of backlit touchpads gradually gaining market attention.

[0003] Light guide plates are primarily used in backlight modules, commonly found in LCD monitors and keyboard backlight systems. The principle behind light guide plates is to guide light sources, distributing the light evenly to improve the visibility of displays or buttons. Given their high light transmittance, uniform light guiding, and light diffusion characteristics, light guide plates can be used not only as part of backlight modules but also in direct-light products such as illuminated signs, ambient lights, and motion-activated indicator lights.

[0004] In recent years, as market demands for both aesthetics and functionality have increased, some manufacturers have begun investing in the development of luminous products for touchpads. These products not only enhance visual appeal but can also serve as status indicators, interactive feedback, or part of brand identity. Therefore, designing products that are compatible with touchpads and provide the required lighting effects has become an important development direction for the industry.

[0005] In view of this, the applicant has conceived and proposed a light-emitting module for touchpads to respond to market demand for touchpad light-emitting products and enhance their visual effects and product competitiveness. Utility Model Content

[0006] One objective of this invention is to provide a light-emitting module for a touchpad that can create a ring-shaped light-emitting effect around the touchpad and ensure uniform light emission, thereby improving the overall visual quality.

[0007] To achieve the above objectives, this utility model discloses a light-emitting module for a touchpad in one embodiment, used to create a light-emitting state around the periphery of the touchpad. The module includes: a frame-shaped reflector; a frame-shaped light guide plate stacked on the frame-shaped reflector, the inner periphery of the light guide plate having at least one frustum-shaped receiving hole; a light source assembly including a circuit board and at least one LED light source, the LED light source being disposed on the circuit board, the circuit board being stacked on the frame-shaped light guide plate, and the LED light source being assembled within the frustum-shaped receiving hole; and a glass cover disposed on the circuit board of the light source assembly. Through the aforementioned light-emitting module structure, a uniform light emission can be formed around the periphery of the touchpad, effectively reducing uneven light emission problems caused by distinct light and dark areas, such as hotspot phenomena.

[0008] Furthermore, in another embodiment, the frustum-shaped receiving hole is a through hole to facilitate the necessary adjustments to the light, so that the subsequent light output achieves a uniform performance.

[0009] In yet another embodiment, a more detailed and suitable example in terms of size and structure is disclosed, for example, the top arc length of the frustum-shaped receiving hole may be greater than the bottom arc length, and the top arc length of the frustum-shaped receiving hole may be 0.5 to 0.6π mm.

[0010] Based on the aforementioned embodiments, in one embodiment, the bottom arc length of the frustum-shaped receiving hole is disclosed to be 0.11 to 0.15 mm, so as to have a better light adjustment effect.

[0011] In addition, another suitable example is disclosed in another embodiment, in which the top arc length of the frustum-shaped receiving hole is greater than the bottom arc length, and the bottom arc length of the frustum-shaped receiving hole is 0.11 to 0.15π mm.

[0012] Considering the structural stability and ease of assembly after assembly, in one embodiment, the frame-shaped reflector and the frame-shaped light guide plate are assembled and fixed by adhesive.

[0013] Based on the foregoing embodiments, in another embodiment, the upper surface of the frame-shaped reflector is pre-coated with adhesive to make the assembly process easier and thus provide a smooth assembly operation.

[0014] On the other hand, also considering the overall structural stability, in one embodiment, the glass cover and the circuit board can be assembled and fixed by adhesive.

[0015] Considering practical application requirements and the strength of protective functions, another embodiment discloses that the glass cover is frosted glass.

[0016] Furthermore, one embodiment reveals that the top surface of the frame-shaped light guide plate has a frame-shaped groove for the circuit board to abut against and stack. This improves alignment convenience during assembly and structural stability after assembly.

[0017] In summary, the light-emitting module of the touchpad of this utility model, through its specific stacked structure, enables a uniform light-emitting effect around the perimeter of the touchpad. More specifically, the frustum-shaped receiving hole effectively solves the problem of uneven brightness and hot spots, improving the uniformity of the final light emission. Furthermore, this utility model also proposes many additional technical features, the specific details of which and their achievable effects are described in the preceding paragraphs. Attached Figure Description

[0018] Figure 1 This is an exploded view of the light-emitting module structure according to one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of a frustum-shaped receiving hole structure according to one embodiment of the present invention.

[0020] Figure 3 This is a cross-sectional schematic diagram of a light-emitting module according to one embodiment of the present invention. Detailed Implementation

[0021] As mentioned earlier, in order to enable the touchpad to have a light-emitting visual effect to meet the increasingly diverse needs of today's electronic products, the applicant proposes a light-emitting module for the touchpad, so that the touchpad can have a uniform light emission performance. Please refer to [link / reference] below. Figure 1 This is an exploded view of the light-emitting module structure according to one embodiment of the present invention. The structural dimensions, proportions, sizes, shapes, or application states shown in the figures are merely illustrative and used to illustrate the technical features of the present invention, and do not represent actual structural designs. The light-emitting module 1 of the touchpad proposed in this invention is used to create a light-emitting state around the perimeter of the touchpad. The light-emitting module 1 includes a frame-shaped reflector 10, a frame-shaped light guide plate 11, a light source assembly 12, and a glass cover 13.

[0022] A frame-shaped light guide plate 11 is stacked on a frame-shaped reflector 10, and the inner periphery of the frame-shaped light guide plate 11 is recessed to form at least one frustum-shaped receiving hole 111. Please refer to [reference here] for further details. Figure 2 This is a schematic diagram of a frustum-shaped receiving hole structure according to one embodiment of the present invention, to more clearly show the structural morphology of the frustum-shaped receiving hole 111. The frame-shaped light guide plate 11 may have a dotted structure in its predetermined light-emitting area, and to ensure light emission around the periphery of the touchpad, the dotted structure may be arranged in a ring shape. Furthermore, in this embodiment, taking an example where each side of the inner periphery of the frame-shaped light guide plate 11 has multiple frustum-shaped receiving holes 111, however... Only A suitable example, whose quantity and arrangement can be adjusted according to actual needs, is a frustum. The arrangement of the frustum-shaped receiving hole 111 is not limited to this. The light source assembly 12 includes a circuit board 121 and at least one LED light source 122. The LED light source 122 is disposed on the circuit board 121, which is stacked on a frame-shaped light guide plate 11. The LED light source 122 is assembled within the frustum-shaped receiving hole 111. The number of LED light sources 122 corresponds to the number of frustum-shaped receiving holes 111, so that after the circuit board 121 is stacked on the frame-shaped light guide plate 11, the LED light sources 122 are respectively located within the frustum-shaped receiving holes 111. A glass cover 13 is disposed on the circuit board 121 of the light source assembly 12 to protect the overall component. A schematic diagram of the overall stacked structure of the light-emitting module 1 can be found in [reference needed]. Figure 3 This is a cross-sectional schematic diagram of a light-emitting module according to one embodiment of the present invention.

[0023] Therefore, the light-emitting module 1, through the frustum-shaped receiving hole 111 structure, can better adjust the light entering the LED light source 122, so as to prevent the generation of hot spots with uneven brightness, thereby effectively improving the uniformity of light output, so that the light-emitting module 1 presents uniform ring-shaped light emission, and the periphery of the touch panel has a good light emission effect.

[0024] Specifically, the frustum-shaped receiving hole 111 can be a through hole or a blind hole structure. In this embodiment, the frustum-shaped receiving hole 111 is taken as a through hole structure, which can be appropriately adjusted for the incident light. At the same time, choosing to implement it as a through hole also has the advantage of easy processing.

[0025] Furthermore, in one application structure of the frustum-shaped receiving hole 111, the top arc length A of the frustum-shaped receiving hole 111 can be greater than the bottom arc length B, and the top arc length A of the frustum-shaped receiving hole 111 can be 0.5 to 0.6π mm. This discloses a structure in which the frustum-shaped receiving hole 111 tapers from the top side to the bottom side, and further proposes a suitable size range for the top arc length. This allows the overall optical adjustment and light emission effect to better meet the light emission requirements. (See [reference needed]). Figure 2 As shown. In practical applications, the arc length A of the top of the frustum-shaped receiving hole 111 can be, for example, 0.55π or 0.57π mm.

[0026] Furthermore, when the frustum-shaped receiving hole 111 has a top arc length A greater than the bottom arc length B, the bottom arc length B of the frustum-shaped receiving hole 111 can also be designed, for example, to be 0.11 to 0.15π mm. This also facilitates the adjustment of the light emitted by the LED light source 122, making the light emission performance of the light-emitting module 1 very uniform. In practical applications, the bottom arc length B of the frustum-shaped receiving hole 111 can be, for example, 0.13π or 0.14π mm.

[0027] Furthermore, when the top arc length A of the frustum-shaped receiving hole 111 is greater than the bottom arc length B, and the top arc length A of the frustum-shaped receiving hole 111 is 0.5 to 0.6π mm, the bottom arc length B can be further combined with the aforementioned range, i.e., the bottom arc length B of the frustum-shaped receiving hole 111 is 0.11 to 0.15π mm. Under these structural and dimensional conditions, the frustum-shaped receiving hole 111 can properly adjust the incident light of the LED light source 122, thereby expanding the light spread angle and avoiding uneven brightness phenomena such as local areas being too dark and local areas being too bright.

[0028] Regarding assembly, in one embodiment, the frame-shaped reflector 10 and the frame-shaped light guide plate 11 are fixed together by an adhesive. The use of adhesive provides a stable and uniform fixing force, and for thin or easily deformable materials, adhesive can more effectively prevent deformation or displacement that may occur during mechanical assembly. Furthermore, adhesive fixing also simplifies the assembly process.

[0029] Furthermore, to improve assembly convenience and efficiency, the upper surface of the frame-type reflector 10 can be pre-coated with adhesive, thereby simplifying the operation steps and significantly improving production efficiency.

[0030] In addition, taking into account factors such as assembly efficiency and ease of operation, the glass cover 13 and the circuit board 121 can also be assembled and fixed by adhesive, thereby improving product quality and reducing the complexity of the assembly process.

[0031] In order to provide excellent protection and enhance the touch experience, the glass cover 13 can be made of frosted glass to reduce dirt residue during use. It can also improve scratch and wear resistance, making the surface less prone to minor scratches.

[0032] Regarding the assembly of the frame-shaped light guide plate 11 and the light source assembly 12, the top surface of the frame-shaped light guide plate 11 can have a frame-shaped groove 112 for the circuit board 121 to abut against and be stacked on. The frame-shaped groove 112 structure facilitates the rapid positioning of the circuit board 121 during assembly, and the groove allows the circuit board 121 to be stably stacked on the frame-shaped light guide plate 11.

[0033] In summary, the light-emitting module of this invention, through a specific stacked structure design, enables the touchpad periphery to exhibit a uniform and stable light-emitting effect, improving the overall visual quality. More specifically, the light-emitting module adopts a frustum-shaped receiving hole structure, which can effectively regulate light diffusion, reduce the uneven brightness and dark spot effect caused by excessive concentration of LED light, and thus optimize light uniformity. On the other hand, regarding the structural and dimensional characteristics of the light-emitting module, this invention also proposes, for example, that the frustum-shaped receiving hole be a through-hole structure, or that the frustum-shaped receiving hole have a top arc length greater than the bottom arc length. Furthermore, the top arc length of the frustum-shaped receiving hole can be 0.5–0.6π mm, and the bottom arc length can be 0.11–0.15π mm. Implementing one or a combination of the aforementioned conditions allows the frustum-shaped receiving hole to effectively adjust the light from the LED light source, increasing the incident light spread angle and further improving the subsequent light emission uniformity. In the assembly section, an adhesive method is disclosed for assembling and fixing certain components to improve assembly stability and simplify the assembly process, thereby effectively improving convenience and production efficiency. For example, the frame-shaped reflector and the frame-shaped light guide plate, or the glass cover and the circuit board, can be assembled and fixed using adhesive. Furthermore, to improve assembly process efficiency, an adhesive pre-applied to the frame-shaped reflector can be used. In addition, this invention proposes that the glass cover can be made of frosted glass, which has advantages such as excellent protection, scratch resistance, and reduced dirt residue. Furthermore, a frame-shaped groove can be provided on the top surface of the frame-shaped light guide plate to facilitate quick alignment of the circuit board during assembly, and to keep the circuit board stable and not easily moved after assembly.

[0034] The above description is merely an illustration of preferred embodiments of the present utility model and is not intended to limit the scope of protection of the claims of the present utility model; therefore, any equivalent substitutions or modifications made without departing from the spirit and scope of the present utility model should be included within the scope of protection of the claims of the present utility model.

[0035] [Explanation of Labels in the Attached Image]

[0036] 1. Light-emitting module

[0037] 10 Frame-type reflector

[0038] 11 Frame-type light guide plate

[0039] 111 Frustum-shaped receiving hole

[0040] 112 Frame-type groove

[0041] 12 Light Source Components

[0042] 121 Circuit Board

[0043] 122 LED light source

[0044] 13 Glass Top Cover

[0045] A. Top arc length

[0046] B bottom arc length

Claims

1. A light-emitting module for a touchpad, used to make the periphery of the touchpad illuminate, characterized in that, include: A frame-type reflector; A frame-shaped light guide plate is stacked on the frame-shaped reflective sheet, and the inner periphery of the frame-shaped light guide plate is recessed to form at least one frustum-shaped receiving hole; A light source assembly includes a circuit board and at least one LED light source, wherein the LED light source is disposed on the circuit board, the circuit board is stacked on the frame-shaped light guide plate, and the LED light source is assembled within the frustum-shaped receiving hole; and A glass cover is disposed on the circuit board of the light source assembly.

2. The light-emitting module of the touchpad according to claim 1, wherein, The frustum-shaped receiving hole is a through hole.

3. The light-emitting module of the touchpad according to claim 1, wherein, The top arc length of the frustum-shaped receiving hole is greater than the bottom arc length, and the top arc length of the frustum-shaped receiving hole is 0.5 to 0.6 mm.

4. The light-emitting module of the touch panel according to claim 3, wherein, The bottom arc length of the frustum-shaped receiving hole is 0.11 to 0.15 mm.

5. The light-emitting module of the touchpad according to claim 1, wherein, The top arc length of the frustum-shaped receiving hole is greater than the bottom arc length, and the bottom arc length of the frustum-shaped receiving hole is 0.11 to 0.15 mm.

6. The light-emitting module of the touchpad according to claim 1, wherein, The frame-shaped reflector and the frame-shaped light guide plate are assembled and fixed by adhesive.

7. The light-emitting module of the touchpad according to claim 6, wherein, The upper surface of the frame-shaped reflector is pre-coated with adhesive.

8. The light-emitting module of the touchpad according to claim 1, wherein, The glass cover and the circuit board are assembled and fixed by adhesive.

9. The light-emitting module of the touch panel according to claim 1, wherein, The glass cover is made of frosted glass.

10. The light-emitting module of the touchpad according to claim 1, wherein, The top surface of the frame-shaped light guide plate has a frame-shaped groove for the circuit board to abut against and be stacked on.

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