A thin light emitting fingerprint module

Abstract

The utility model discloses a kind of thin light-emitting fingerprint modules, including a group of L-shaped configuration soft circuit board, a group of hard circuit board, frame, sensing IC and glass panel, the hard circuit board is directly combined on soft circuit board and forms circuit connection, two light guide LED are set on the same plane on the two sides of hard circuit board, the soft circuit board is after combining hard circuit board and is extended and reversely folded to form assembly whole, the assembly whole is placed in the middle groove position in frame, the top of the hard circuit board is sequentially provided with sensing IC and glass panel from bottom to top, the application designs normal touch switch function fingerprint key, since the creation reduces a layer of light guide structure, the thickness of key whole can reduce three times compared with traditional design, can reach the purpose of super-thin design.

Description

Technical Field

[0001] This utility model relates to the field of fingerprint module technology, specifically a thin luminescent fingerprint module. Background Technology

[0002] With the continuous advancement of technology, laptops are becoming increasingly thinner and lighter for portability, while also incorporating various new features, such as fingerprint recognition as a power control method. This fingerprint module is usually integrated with the power button, located in the upper right corner of the keyboard module. To improve recognition accuracy, illuminated visual elements are typically designed around the fingerprint module.

[0003] When the power button must be integrated with a fixed-size keyboard, and space is limited, the traditional circuit board design of the fingerprint button 10 is as follows: Figure 1 , Figure 2 As shown, the flexible flat cable 11 of the rigid-flex board 1 is located on one side of the rigid circuit board 2. When using it, the flexible flat cable needs to be wound and bent before assembly. If there is only one layer of light guide group 3, the light guide path of the LED 31 of the light guide group 3 and the external light guide plate 32 will be blocked. Therefore, two layers of light guide group 3 must be used to guide the light of the LED 31 of the two light guide groups 3 from the light guide plates 32 on both sides to achieve a uniform light emission effect. Under this two-layer structure design, the overall thickness cannot be reduced, so it cannot be applied to ultra-thin laptops. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model relates to a thin luminescent fingerprint module. This module has a simple and reliable structure, effectively solves the aforementioned technical problems, and is suitable for widespread use. To achieve the above objectives, this utility model is implemented through the following technical solution: A thin, light-emitting fingerprint module includes a set of L-shaped flexible circuit boards, a set of rigid circuit boards, a frame, a sensing IC, and a glass panel. The rigid circuit boards are directly assembled onto the flexible circuit boards to form a circuit connection. Two light-guiding LEDs are arranged on the same plane on both sides of the rigid circuit boards. The flexible circuit boards are extended and folded after being assembled with the rigid circuit boards to form an assembly. The assembly is placed in the middle recessed position within the frame. The sensing IC and the glass panel are arranged sequentially from bottom to top on the rigid circuit boards.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme: the frame is made of a light-guiding material as a light guide element.

[0006] The outstanding and beneficial technical effects of this utility model compared to the prior art are: this application designs a fingerprint button with normal touch switch function. Because this invention reduces one layer of light guide structure, the overall thickness of the button can be reduced by 30% compared to the traditional design. Figure 5 As shown, the ultra-thin design can be achieved. Therefore, the thin fingerprint button of this invention can be used to manufacture ultra-thin laptops, which has practical value. In addition, this invention directly uses the frame as a light guide element, which can not only simplify the manufacturing process and improve manufacturing efficiency, but also obtain the best visual effect, making it clear to users at a glance. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a traditional rigid-flex circuit board. Figure 2 This is a cross-sectional diagram of a traditional button combination; Figure 3 This is a schematic diagram of the unfolded flexible and rigid circuit boards of this invention; Figure 4 This is a cross-sectional diagram of the button combination in this work; Figure 5 This is a diagram comparing the appearance of this design with that of traditional buttons. Detailed Implementation

[0008] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0009] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The directions or positional relationships shown are for the purpose of describing this utility model only, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0010] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0011] Please refer to Figure 3 , Figure 4This invention mainly designs an innovative thin-film luminescent fingerprint module structure. The structure mainly includes a set of L-shaped flexible circuit boards 4 and a rigid circuit board 5. The rigid circuit board 5 is directly combined with the flexible circuit board 4. Preferably, the rigid circuit board 5 is heat-pressed to the middle of the flexible circuit board 4 using adhesive bonding technology, and the two form a circuit connection. This eliminates the need for the flexible flat cable 41 to be located on either side of the rigid circuit board 5. Two light-guiding LEDs 51 are set on the same plane on both sides of the rigid circuit board 5. In addition, this invention uses a light-guiding material to make the button frame 6.

[0012] After the flexible circuit board 4 and the rigid circuit board 5 are combined, they are extended and folded to form a cube-shaped assembly, which is placed in the middle of the frame 6. Then, the sensing IC 7 and the glass panel 8 are placed on top, forming a fingerprint button 9 with normal touch switch function. Because this design reduces one layer of light guide structure, the overall thickness of the button is reduced by approximately 30% compared to traditional designs. Figure 5 As shown, the ultra-thin design is achieved. Therefore, the thin fingerprint button of this invention can be used to manufacture ultra-thin laptops, which has practical value.

[0013] In addition, the button frame 6 of this invention is a light guide element made of a material with light guiding properties. Therefore, unlike the traditional design, there is no need to install an additional light guide plate 32 around the LED 31. This invention directly uses the frame 6 as a light guide element, which not only simplifies the manufacturing process and improves manufacturing efficiency, but also achieves the best visual effect, making it clear to users at a glance.

[0014] It is worth noting that the technical features such as the sensing IC and glass panel involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement of these technical features can be adopted by conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0015] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made by those skilled in the art based on the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A thin light emitting fingerprint module, characterized by: It includes a set of L-shaped flexible circuit boards, a set of rigid circuit boards, a frame, a sensing IC, and a glass panel. The rigid circuit boards are directly assembled on the flexible circuit boards to form a circuit connection. Two light guide LEDs are set on the same plane on both sides of the rigid circuit boards. The flexible circuit boards are extended and folded after being assembled with the rigid circuit boards to form an assembly. The assembly is placed in the middle groove position in the frame. The sensing IC and the glass panel are arranged sequentially from bottom to top on the rigid circuit boards.

2. The thin light emitting fingerprint module according to claim 1, wherein: The frame is a light guide element made of a light-guiding material.

Images