Finger feature module

Abstract

The invention discloses a finger feature module, which comprises a light guide seat, a circuit board assembly, a feature sensing element and a plurality of light emitting parts, and is characterized in that the light guide seat comprises a frame seat and a plate body arranged in the frame seat, and the plate body is provided with an eccentrically arranged through hole; the circuit board assembly is provided with a first part and a second part, the first part of the circuit board assembly is arranged in the frame seat and located above the board body, and the second part of the circuit board assembly penetrates out of the through hole so that at least part of the circuit board assembly can be located below the board body; the characteristic sensing element is arranged on the first part of the circuit board assembly; the light-emitting parts are electrically connected with the circuit board assembly, two light-emitting parts of the light-emitting parts are located on the two opposite sides of the through hole, and a virtual connecting line of the two light-emitting parts is overlapped with the through hole. The finger feature module is provided with the eccentrically arranged through hole, so that the configuration of a circuit board is facilitated, and the possibility that a light-emitting part or an electronic element is peeled off is reduced.

Description

Technical Field

[0001] This invention relates to a finger feature module, and more particularly to a finger feature module with an eccentric perforation design on a light guide base. Background Technology

[0002] When finger feature modules are placed on the keyboard / casing of electronic devices, their tops resemble buttons, requiring a highly integrated overall design to meet the specifications of modern electronic devices. Designing finger feature modules is a complex problem with no simple answer, as it simultaneously addresses multiple requirements in terms of manufacturing processes and functionality. The design difficulty increases further when the finger feature module also needs to provide button functionality, such as acting as a power button or a function key. Summary of the Invention

[0003] One object of the present invention is to provide a finger feature module whose light guide seat has an off-center perforation, which facilitates the configuration of the circuit board and reduces the possibility of component peeling.

[0004] Another object of the present invention is to provide a finger feature module whose light guide base is composed of multiple components to improve manufacturability and ease of assembly.

[0005] Another object of the present invention is to provide a finger feature module, wherein the light guide seat has a separated upper and lower receiving chamber to improve the configuration flexibility of the circuit board.

[0006] To achieve the above objectives, the present invention provides a finger feature module, comprising a light guide base, a circuit board assembly, a feature sensing element, and a plurality of light-emitting elements. The light guide base includes a frame and a plate disposed within the frame, the plate having an eccentrically disposed through hole. The circuit board assembly has a first portion and a second portion, the first portion of the circuit board assembly being disposed within the frame and located above the plate, and the second portion of the circuit board assembly extending through the through hole such that at least a portion of the circuit board assembly is located below the plate. The feature sensing element is disposed on the first portion of the circuit board assembly. The plurality of light-emitting elements are electrically connected to the circuit board assembly, two of the plurality of light-emitting elements being located on opposite sides of the through hole, and the virtual connection line between the two light-emitting elements overlapping the through hole.

[0007] As an optional technical solution, the plate is connected to the middle section of the frame to define an upper receiving chamber and a lower receiving chamber above and below the plate in the frame, respectively, and the perforation connects the upper receiving chamber and the lower receiving chamber.

[0008] As an optional technical solution, the circuit board assembly includes a first circuit board and a second circuit board, with the first circuit board located in the upper accommodating chamber and the second circuit board located in the lower accommodating chamber.

[0009] As an optional technical solution, the plate is provided with multiple light source accommodating portions, and the multiple light-emitting elements are respectively disposed in the multiple light source accommodating portions.

[0010] As an optional technical solution, the plate includes a fixed plate and a detachable plate. The fixed plate extends from the frame to the center of the frame to form a through hole in the frame. The detachable plate partially covers the through hole to define the perforation together with the fixed plate.

[0011] As an optional technical solution, the plate also has a central groove that communicates with the perforation, and the long axis of the central groove is perpendicular to the long axis of the perforation.

[0012] As an optional technical solution, the plate also has an expansion groove that extends outward from the intersection of the central groove and the perforation.

[0013] The present invention also proposes another finger feature module, comprising a light guide base, a circuit board assembly, a feature sensing element, and at least one light-emitting element. The light guide base includes a frame and a detachable plate, the detachable plate being detachably disposed on the frame to define a through hole in the frame. The circuit board assembly has a first portion and a second portion, the first portion of the circuit board assembly being disposed in the frame and located above the detachable plate, and the second portion of the circuit board assembly extending through the through hole so that at least a portion of the circuit board assembly is located below the detachable plate. The feature sensing element is disposed on the first portion of the circuit board assembly. The at least one light-emitting element is electrically connected to the circuit board assembly to emit light toward the light guide base.

[0014] As an optional technical solution, the frame has a fixing plate that extends from the frame towards the center of the frame to form a through hole in the frame. The detachable plate partially covers the through hole, so that the part of the through hole not covered by the detachable plate forms the perforation.

[0015] As an optional technical solution, the through hole covers the center of the frame base, and the detachable plate partially covers the through hole in such a way that it covers the center of the frame base, so that the through hole is eccentrically set relative to the center of the frame base.

[0016] As an optional technical solution, the portion of the through hole not covered by the removable plate also forms at least one light source receiving portion.

[0017] As an optional technical solution, the fixing plate has two first light source accommodating portions, which are respectively disposed on opposite sides of the perforation, and each of the two first light source accommodating portions is used to accommodate at least one of the at least one light-emitting element.

[0018] As an optional technical solution, the detachable plate has a second light source accommodating portion, the second light source accommodating portion and the perforation are located on opposite sides of the center of the frame, and the second light source accommodating portion is used to accommodate at least one of the at least one light-emitting elements.

[0019] As an optional technical solution, the circuit board assembly includes a first circuit board and a second circuit board. The first circuit board is located in the first part of the circuit board assembly and covers the through hole. The second circuit board is located in the second part of the circuit board assembly and is recessed relative to the first circuit board to form a recessed space.

[0020] As an optional technical solution, the circuit board assembly includes a flexible circuit board for supporting the first circuit board and the second circuit board. The flexible circuit board has a bent section passing through the perforation, and the bent section is located in the retracted space.

[0021] As an optional technical solution, there is a gap between the bent section and the side wall of the frame, the gap being 10% to 45% of the width of the first circuit board.

[0022] As an optional technical solution, the circuit board assembly includes a rigid board and a flexible circuit board. The rigid board is located in the first part of the circuit board assembly, and the flexible circuit board is used to support the rigid board. The feature sensing element is electrically connected to the flexible circuit board and the feature sensing element overlaps at least partially with the rigid board through the flexible circuit board.

[0023] As an optional technical solution, the circuit board assembly includes a flexible circuit board, a first circuit board and a second circuit board. The first circuit board and the second circuit board are respectively disposed on the upper side and the lower side of the flexible circuit board. There is a gap between the end of the first circuit board and the flexible circuit board, and the second circuit board is retracted relative to the end of the first circuit board.

[0024] As an optional technical solution, the circuit board assembly further includes an intermediate circuit board located between the first circuit board and the flexible circuit board, wherein the intermediate circuit board is recessed relative to the end of the first circuit board to form the gap.

[0025] The present invention also proposes another finger feature module, comprising a light guide base, a circuit board assembly, a feature sensing element, and a light-emitting element. The light guide base includes a frame and a plate. The frame defines an accommodating space, and the plate is disposed on the frame to divide the accommodating space into an upper accommodating chamber and a lower accommodating chamber. The plate has a through hole that connects the upper accommodating chamber and the lower accommodating chamber. The circuit board assembly includes a flexible circuit board, a first circuit board, and a second circuit board. The first circuit board and the second circuit board are disposed on the flexible circuit board, and the flexible circuit board extends from the upper accommodating chamber through the through hole to the lower accommodating chamber, such that the first circuit board is located in the upper accommodating chamber and the second circuit board is located in the lower accommodating chamber. The feature sensing element is disposed on the first circuit board. The light-emitting element is electrically connected to the circuit board assembly to emit light toward the light guide base.

[0026] As an optional technical solution, the first circuit board covers the perforation, and the second circuit board is recessed relative to the first circuit board.

[0027] As an optional technical solution, the finger feature module also includes a carrier for supporting the light guide seat. The bottom of the carrier has an opening through which the circuit board assembly extends.

[0028] As an optional technical solution, the circuit board assembly also includes a switch exposed from the opening to enable the finger feature module to have a button function.

[0029] As an optional technical solution, the flexible circuit board has a slot to define a first flexible board portion, a second flexible board portion and a bending section. The first circuit board and the second circuit board are respectively disposed in the first flexible board portion and the second flexible board portion. The bending section is connected between the first flexible board portion and the second flexible board portion, and the flexible circuit board is bent relative to the slot to form the bending section.

[0030] As an optional technical solution, before the flexible circuit board is bent, the first flexible board portion has a pair of flexible board wings on the side adjacent to the second flexible board portion, and the pair of flexible board wings are located on both sides of the bending section.

[0031] As an optional technical solution, the light-emitting element is disposed on the flexible circuit board.

[0032] Compared to existing technologies, the finger feature module of the present invention has an off-center perforation, which facilitates the placement of the circuit board and reduces the possibility of light-emitting components or electronic components peeling off. Furthermore, the finger feature module of the present invention has a modular light guide base, which improves the manufacturability of the components and the ease of assembly. In addition, the light guide base of the finger feature module of the present invention has separate upper and lower receiving chambers to increase the flexibility of circuit board placement.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Attached Figure Description

[0034] Figure 1A This is a schematic diagram of the combination of the finger feature module in the first embodiment of the present invention.

[0035] Figure 1B This is an exploded view of the finger feature module according to the first embodiment of the present invention.

[0036] Figure 1C for Figure 1A A partial cross-sectional schematic diagram of the finger feature module.

[0037] Figure 2A This is a partial cross-sectional schematic diagram of the circuit board assembly according to the first embodiment of the present invention.

[0038] Figure 2B This is an exploded perspective view of the circuit board assembly according to the first embodiment of the present invention.

[0039] Figure 2C for Figure 2B A schematic diagram of a partial explosion of the flexible circuit board of the circuit board assembly before bending.

[0040] Figure 3A This is a planar schematic diagram of the light guide base according to the first embodiment of the present invention.

[0041] Figure 3B This is an exploded three-dimensional schematic diagram of the light guide base according to the first embodiment of the present invention.

[0042] Figure 4A This is an exploded three-dimensional schematic diagram of the light guide base according to the second embodiment of the present invention.

[0043] Figure 4B This is a planar schematic diagram of the light guide base according to the second embodiment of the present invention.

[0044] Figure 5A This is an exploded view of the finger feature module according to the third embodiment of the present invention.

[0045] Figure 5B This is a partial cross-sectional schematic diagram of the finger feature module according to the third embodiment of the present invention.

[0046] Figure 5C This is a planar schematic diagram of the light guide base according to the third embodiment of the present invention.

[0047] Figure 6A This is a partial cross-sectional schematic diagram of the finger feature module according to the fourth embodiment of the present invention.

[0048] Figure 6B This is a three-dimensional schematic diagram of the light guide base according to the fourth embodiment of the present invention.

[0049] Figure 6C This is a planar schematic diagram of the light guide base according to the fourth embodiment of the present invention.

[0050] Figure 7A This is a partial cross-sectional schematic diagram of the finger feature module according to the fifth embodiment of the present invention.

[0051] Figure 7B for Figure 7A A schematic diagram of a partial explosion of the flexible circuit board of the circuit board assembly before bending.

[0052] Figure 7C This is a planar schematic diagram of the light guide base according to the fifth embodiment of the present invention.

[0053] Figures 8A to 8C These are partial cross-sectional schematic diagrams of circuit board assemblies according to different embodiments of the present invention. Detailed Implementation

[0054] To provide a further understanding of the purpose, structure, features and functions of the present invention, detailed descriptions are provided below with reference to embodiments.

[0055] In finger feature modules, flexible printed circuit boards (FPCs) are commonly used to carry signal circuits between multiple circuit boards. However, due to the size limitations of the finger feature module itself, the FPC must be bent to smoothly connect multiple vertically stacked circuit boards. Generally, if the FPC needs to be bent, problems arise as the substrate for the light source and light source driving circuit, because the stress difference near the bending section of the FPC is large, which can easily cause the light source or circuit components on the FPC to peel off. Feature sensing elements, flexible circuit boards, and multiple rigid circuit boards need to be mounted together in a carrier. When the bending section of the FPC is located at or beyond the four sides of the finger feature unit (e.g., feature sensing element), it is easily squeezed and bumped during production line or off-line processes, causing damage to the circuit or components. In addition, the finger feature module also includes a light guide, which has upright sidewalls that can laterally surround the finger feature unit. However, if there is a defect in the entire sidewall, or if there is an inconsistency in the cross-sectional area, shape, or dimensions in any direction, such as the FPC protruding from one side of the sidewall, it will cause differences in the brightness of the light emitted from the top surface of the light guide. The stacked design of multiple rigid and flexible circuit boards in the finger feature module affects the ease of manufacturing, manufacturing cost, and output per unit time.

[0056] refer to Figures 1A to 1C , Figure 1A and Figure 1B These are combined schematic diagrams and exploded schematic diagrams of the finger feature module 1 according to the first embodiment of the present invention; Figure 1C for Figure 1A A partial cross-sectional schematic diagram of the finger feature module 1. (See diagram below.) Figures 1A to 1CAs shown, in the first embodiment, the finger feature module 1 includes a light guide seat 10, a circuit board assembly 20, a feature sensing element 30, and a plurality of light-emitting elements 40. The light guide seat 10 includes a frame 110 and a plate 120 disposed in the frame 110, and the plate 120 has an eccentrically disposed through hole 122. The circuit board assembly 20 has a first portion 21 and a second portion 22. The first portion 21 of the circuit board assembly 20 is disposed in the frame 110 and located above the plate 120, and the second portion 22 of the circuit board assembly 20 protrudes through the through hole 122 so that at least a portion of the circuit board assembly 20 is located below the plate 120. The feature sensing element 30 is disposed on the first portion 21 of the circuit board assembly 20. The plurality of light-emitting elements 40 are electrically connected to the circuit board assembly 20, and two of the plurality of light-emitting elements 40, 40a, are located on opposite sides of the through hole 122, and the virtual connection line L1 of the two light-emitting elements 40a overlaps with the through hole 122 (e.g., Figure 3A (As shown).

[0057] Specifically, the light guide 10 can be made of any suitable optical material to guide the light emitted by the light-emitting element 40 along the plate 120 toward the frame 110, and then emit it from the top surface (or light-emitting surface 111) of the frame 110 to indicate the sensing area of ​​the finger feature module 1 (i.e., the position of the feature sensing element 30). Figure 1B As shown, the light guide base 10 is preferably a three-dimensional light guide extending along the X, Y, and Z axes, and the light guide base 10 has a receiving space 112 and a through hole 122. The receiving space 112 is used to at least partially accommodate the feature sensing element 30 and the circuit board assembly 20, while the through hole 122 is used as a wiring opening for routing the circuit board assembly 20. For example, the frame 110 of the light guide base 10 is formed by sidewalls 114 surrounding the plate body 120, so that the frame 110 defines the receiving space 112. In this embodiment, the frame 110 is a rectangular (or square) frame formed by four sidewalls 114 connected to each other, but is not limited thereto. In other embodiments, depending on the actual application, the frame 110 can be a frame of any suitable geometry such as circular or polygonal. The plate 120 of the light guide base 10 is disposed in the frame 110 and extends laterally to connect with the sidewall 114 constituting the frame 110, serving as the floor of the frame 110. A through-hole 122 is provided in the plate 120, causing the circuit board assembly 20 to partially bend downwards and extend from above the plate 120 through the through-hole 122 to below the plate 120. This ensures that the sidewall 114 constituting the frame 110 remains intact, improving the uniformity of light emitted from the top surface (i.e., the light-emitting surface 111) of the sidewall 114. In this embodiment, the through-hole 122 is eccentrically positioned relative to the center of the frame 110 (e.g., as shown by the central axis C). The "center of the frame" can be represented by the central axis C, which passes through a virtual XY plane along the Z-axis direction through the frame 110 (or the accommodating space 112) or the geometric center of the plate 120. For example, as... Figure 1B and Figure 1C As shown, the perforation 122 is located on the plate 120 at a position offset from the central axis C, such that the perforation 122 is relatively close to one side wall 114 (e.g., the right side wall) and relatively far from the other side wall 114 (e.g., the left side wall) in the X-axis direction, and the perforation 122 preferably extends along the Y-axis direction. In other words, the perforation 122 can be an elongated slot, with its major axis and minor axis arranged along the Y-axis and X-axis directions respectively, and the perforation 122 does not overlap with the center (i.e., the central axis C) of the frame 110 in the Z-axis direction.

[0058] In this embodiment, the sidewalls 114 constituting the frame 110 preferably extend along the Z-axis and surround the plate 120, while the plate 120 extends along the XY plane to connect the inner surfaces (i.e., the surfaces facing the central axis C) of each sidewall 114, such that the light guide base 10 can have a U-shaped or H-shaped cross-section along the Z-axis (e.g., the vertical / stacked direction). For example, such as Figure 1C As shown, in this embodiment, the plate 120 is connected to the middle section of the frame 110 (or sidewall 114), so that the light guide seat 10 has an H-shaped cross-section along the Z-axis. In other words, the plate 120 divides the accommodating space 112 of the light guide seat 10 into an upper accommodating chamber 112U and a lower accommodating chamber 112D, wherein the upper accommodating chamber 112U is the space enclosed above the plate 120 by the upper part 110U of the frame 110, and the lower accommodating chamber 112D is the space enclosed below the plate 120 by the lower part 110D of the frame 110, and the through hole 122 of the plate 120 connects the upper accommodating chamber 112U and the lower accommodating chamber 112D.

[0059] In another embodiment (such as) Figure 7A As shown, the plate 120C can be connected to the bottom or lower part of the frame 110 (or sidewall 114), so that the light guide seat 13A has a U-shaped cross-section along the Z-axis. In other words, the light guide seat 13A can have a single accommodating space 112 enclosed by the frame 110 and the plate 120, and the through hole 122 of the plate 120 allows the accommodating space 112 of the light guide seat 13A to communicate with the outside of the light guide seat 13A. In this embodiment, the plate 120 is preferably orthogonally connected to the surface of the sidewall 114 of the frame 110, that is, the included angle between the plate 120 and the sidewall 114 is preferably 90 degrees, but is not limited thereto. Depending on the actual application, the included angle between the plate 120 and the sidewall 114 can be greater than or less than 90 degrees, so that the plate 120 is disposed in the frame 110 in an inclined manner. Furthermore, the plate 120 is preferably a flat plate with a uniform thickness, but is not limited thereto. Depending on the actual application, the plate 120 may have different thicknesses in different parts.

[0060] In one embodiment, the plate 120 may be provided with light source receiving portions 124 for accommodating light-emitting elements 40. The number of light source receiving portions 124 preferably corresponds to the number of light-emitting elements 40, so that the light-emitting elements 40 are disposed in a one-to-one manner in the light source receiving portions 124, but this is not a limitation. The number of light source receiving portions 124 may be less than the number of light-emitting elements 40, so that the light-emitting elements 40 are disposed in a many-to-one manner in the light source receiving portions 124. The light source receiving portions 124 may be recesses (or blind holes) and / or through holes formed in the plate 120. For example, in this embodiment, the finger feature module 1 has four light-emitting elements 40, and the plate 120 is correspondingly provided with four light source receiving portions 124, wherein two light source receiving portions 124a may be recesses for accommodating light-emitting elements 40a, and the other two light source receiving portions 124b may be through holes for accommodating light-emitting elements 40b (e.g., Figure 3A (as shown), but not limited to this.

[0061] In one embodiment, the circuit board assembly 20 may include multiple functional circuit boards, and these multiple functional circuit boards may be connected by a flexible circuit board 200, i.e., the flexible circuit board 200 is used to carry and electrically connect the multiple functional circuit boards. The multiple functional circuit boards may include, for example, a feature board and an interface board, and optionally a switch board. The feature board is provided with feature circuitry for electrically connecting to a feature sensing element 30 to output feature signals sensed by the feature sensing element 30. The interface board may have circuitry and connectors, electrically connecting the feature board to a system terminal (e.g., a connection interface connected to a computer motherboard) to output feature signals to the system terminal, thereby achieving the function of finger feature recognition. The switch board has a switch circuit and is provided with a switch 240 (e.g., ...). Figure 2B (As shown). The switch board is electrically connected to the switch 240 and the interface board, so that the trigger signal generated by the switch 240 is output to the system via the interface board, thereby enabling the finger feature module 1 to have a button function. In other words, in the embodiment where the functional circuit board of the circuit board assembly 20 only includes the feature board and the interface board, the finger feature module 1 only has a finger feature recognition function; in the embodiment where the functional circuit board of the circuit board assembly 20 includes the feature board, the interface board and the switch board, the finger feature module 1 can simultaneously have a finger feature recognition function and a button function.

[0062] Furthermore, each of the multiple functional circuit boards can be individually composed of a rigid circuit board, a flexible circuit board, or a rigid-flex hybrid circuit board, wherein the rigid-flex hybrid circuit board is formed by stacking and electrically connecting a flexible circuit board and a rigid circuit board. In addition, each functional circuit board can be implemented by at least one circuit board, such that at least one circuit board can have corresponding circuitry to perform the function of the corresponding functional circuit board individually or in combination. In one embodiment, such as... Figure 1CAs shown, the circuit board assembly 20 includes a flexible circuit board 200, a first circuit board 210, and a second circuit board 220, wherein the flexible circuit board 200 carries the first circuit board 210 and the second circuit board 220. The first circuit board 210 is located in the first portion 21 of the circuit board assembly 20 and in the upper receiving chamber 112U, and the second circuit board 220 is located in the second portion 22 of the circuit board assembly 20 and in the lower receiving chamber 112D. Specifically, the circuit board assembly 20 can electrically connect all the circuit boards by a single flexible circuit board 200, wherein the first circuit board 210 is disposed on the first flexible portion 201 of the flexible circuit board 200 to form the first portion 21 of the circuit board assembly 20, and the second circuit board 220 is disposed on the second flexible portion 202 of the flexible circuit board 200 to form the second portion 22 of the circuit board assembly 20. In this embodiment, the first circuit board 210 preferably extends to cover the through hole 122, and the second circuit board 220 is recessed relative to the first circuit board 210 to form a recessed space RS. For example, the second circuit board 220 may be recessed relative to the first circuit board 210 along the X-axis direction toward the center of the frame 110 by approximately 15-55% of the width of the first circuit board 210, forming a recessed space RS to accommodate the bent circuitry of the flexible circuit board 200 (e.g., the bent segment 203 described later). The flexible circuit board 200 has a bent segment 203 that bends downward through the through-hole 122. The bent segment 203 connects the first flexible portion 201 and the second flexible portion 202 of the flexible circuit board 200, and is preferably located in the recessed space RS.

[0063] In this embodiment, the first circuit board 210 can serve as a feature board, while the second circuit board 220 can serve as a switch board. Correspondingly, as... Figure 1C As shown, the circuit board assembly 20 also includes a switch 240, which is disposed on and electrically connected to the second circuit board 220. The switch 240 can be pressed to generate a trigger signal, thereby enabling the finger feature module 1 to function as a button; that is, the finger feature module 1 with the switch 240 can function as a finger feature button (e.g., a power button with finger feature recognition function). Specifically, in this embodiment, the feature plate may be at least composed of a first circuit board 210, which has a feature circuit for electrically connecting to the feature sensing element 30 to output a feature signal. The switch plate may be at least composed of a second circuit board 220, which has a switch circuit for electrically connecting to the switch 240 to output a trigger signal. Figure 1CAs shown, in order to reserve a larger area for mounting the switch plate (e.g., the second circuit board 220) in the second flexible circuit board portion 202, the bending section 203, the retraction space RS, and the through hole 122 of the light guide seat 10 are preferably located off-center in the vertical projection of the feature sensing element 30. This allows the switch 240 mounted on the second circuit board 220 to be located in the central area of ​​the frame 110, thereby improving the triggering effect of the switch 240. For example, in the vertical direction (i.e., the Z-axis direction), the central axis C of the frame 110 preferably passes through the switch 240, or more preferably, the center of the switch 240 overlaps with or is near the central axis C of the frame 110. In other embodiments, the first circuit board 210 and the second circuit board 220 may jointly serve as feature plates, rather than as switch plates for mounting the switch 240, i.e., only having finger feature recognition functionality.

[0064] like Figure 1A As shown, the circuit board assembly 20 also includes a third circuit board 230. The third circuit board 230 can be disposed at the free end of the second portion 22 of the circuit board assembly 20 and protrude beyond the light guide seat 10, serving as an interface plate for electrically connecting to the system end. Thereby, the first circuit board 210, serving as a feature board, can be electrically connected to the third circuit board 230, serving as an interface plate, via the flexible circuit board 200, to transmit finger feature data to the system end via the interface plate. Furthermore, the second circuit board 220, serving as a switch board, can be electrically connected to the feature board (e.g., the first circuit board 210) and the interface plate (e.g., the third circuit board 230) via the flexible circuit board 200, to output a trigger signal to the system end via the interface plate. For example, the flexible circuit board 200 may have a lead-out circuit, wherein the lead-out circuit is electrically connected to the switch board (e.g., the second circuit board 220) and the interface plate (e.g., the third circuit board 230), for outputting a trigger signal to the system end. In this embodiment, the first circuit board 210, the second circuit board 220 and the third circuit board 230 preferably all comprise rigid circuit boards or rigid boards without circuits.

[0065] Please also refer to Figures 2A to 2C , Figure 2A and Figure 2B These are, respectively, a partial cross-sectional view and an exploded perspective view of the circuit board assembly 20 according to the first embodiment of the present invention, and... Figure 2C for Figure 2B A partial explosion diagram of the flexible circuit board 200 in the circuit board assembly 20 before bending. (See diagram for reference.) Figures 2A to 2CAs shown, in this embodiment, the flexible circuit board 200 can be implemented as a strip-shaped circuit board with opposite ends, wherein the first end is for mounting the first circuit board 210 and the second circuit board 220, and the second end is for mounting the third circuit board 230. Preferably, the first end of the flexible circuit board 200 has a slot 204 design, allowing the flexible circuit board 200 to be bent (or folded back) relative to the slot 204 to form a bent segment 203 connecting the first flexible board portion 201 and the second flexible board portion 202. Specifically, as... Figure 2C As shown, before the flexible circuit board 200 is bent, the slot 204 is preferably an L-shaped channel formed on both sides of the bending section 203, so that the first flexible board portion 201 and the second flexible board portion 202 are connected to each other only by the bending section 203, and a pair of flexible board wings 205 are formed on the side of the first flexible board portion 201 adjacent to the second flexible board portion 202, which are arranged parallel to the bending section 203 and separated by the slot 204. Therefore, when the first flexible board portion 201 of the flexible circuit board 200 is bent (or folded back) along the bending section 203 toward the second flexible board portion 202, the first flexible board portion 201 and the second flexible board portion 202 largely overlap in the vertical direction (e.g., the Z-axis direction), and each flexible board wing 205 protrudes away from the second flexible board portion 202 relative to the bending section 203, forming a shape as shown in the diagram. Figure 2B The flexible circuit board 200 shown is folded back. In other words, in the folded flexible circuit board 200, the bent section 203 is preferably located entirely between the two flexible board wings 205 of the first flexible board portion 201, and does not extend beyond the end of the flexible board wings 205 (i.e., away from the free end of the second flexible board portion 202), which can effectively prevent the bent section 203 from being squeezed and collided with the side wall 114 of the frame 110, reducing the possibility of damage.

[0066] Furthermore, both the first circuit board 210 and the second circuit board 220 can be composed of at least one circuit board to achieve a preset electrical function. For example, such as Figure 2A and Figure 2BAs shown, in one embodiment, the first circuit board 210 may include circuit boards 212 and 214, while the second circuit board 220 may include circuit boards 222 and 224. Circuit board 212 is disposed on and electrically connected to the first flexible circuit board portion 201, and preferably has a pair of rigid wing portions 2121 corresponding to the flexible circuit board wing portions 205. When circuit board 212 is disposed on the first flexible circuit board portion 201, the flexible circuit board wing portions 205 are preferably securely stacked on the rigid wing portions 2121, and circuit board 212 preferably covers the bent section 203 of the flexible circuit board 200, so that the bent section 203 does not protrude into the space between the two rigid wing portions 2121, further ensuring that the bent section 203 is not easily damaged, but this is not a limitation. Depending on the actual application, circuit board 212 may also not have rigid wing portions 2121, but may have a size and shape equal to or smaller than that of circuit board 214. Circuit board 214 is stacked and electrically connected to circuit board 212, and feature sensing element 30 is stacked and electrically connected to circuit board 214. Circuit board 214 may have a rectangular shape, and preferably has a size corresponding to feature sensing element 30, such that the bent section 203 is preferably located at the outermost connection pad 310 of the retraction space RS corresponding to feature sensing element 30 (shown in...). Figure 1B The bent segment 203 preferably overlaps at least partially with the outermost connecting pad 310 of the feature sensing element 30 in the receding space RS in the stacking direction (or Z-axis direction). In one embodiment, the bent segment 203 may be completely located inside the outermost connecting pad 310 of the feature sensing element 30, i.e., it does not protrude from the outermost connecting pad 310 in the direction adjacent to the sidewall 114 of the light guide seat 10. For example, there is a gap between the bent segment 203 and the sidewall 114 of the frame seat 110, and this gap is preferably 10% to 45% of the width of the first circuit board 210 (e.g., circuit board 214), but is not limited thereto. In this embodiment, this gap preferably refers to the distance between the most protruding point of the bent segment 203 in the X-axis direction and the inner surface of the opposite sidewall 114. Circuit boards 222 and 224 are respectively disposed on opposite sides (e.g., upper and lower sides) of the second flexible board portion 202 and electrically connected thereto. At least circuit board 224 has a switching circuit, and switch 240 is preferably disposed on the underside of circuit board 224 and electrically connected thereto. In addition, electronic components 250 such as resistors, capacitors, and electrostatic protection elements (e.g., transient voltage suppressor diodes (TVS)) may be selectively disposed on the circuit board (e.g., circuit board 224) to provide the required electrical function.

[0067] The feature sensing element 30 can be a finger feature recognition chip used to capture the user's finger features, such as fingerprints and / or finger veins, for subsequent identification. The feature sensing element 30 can be a capacitive, optical, or ultrasonic fingerprint (and / or finger vein) capture / recognition chip, and the recognition processing unit and storage element (not shown) can be integrated into the feature sensing element 30 or the system. In one embodiment, the recognition processing unit and storage element are preferably integrated into the system, such as the central processing unit (CPU) and memory on a computer motherboard, but are not limited thereto. In another embodiment, the recognition processing unit and storage element can be integrated into an electronic device equipped with this finger feature module 1. The chip-type feature sensing element 30 is typically cut into a small rectangle (or square) during cutting. Since the user's press or contact usually occurs in the center of the chip, the corners of the chip become inefficient chip areas (e.g., areas with low sensing probability), or even invalid chip areas (e.g., corners are non-sensing areas). In one embodiment, the feature sensing element 30 can be reduced in at least one corner space by cutting the feature sensing element 30. For example, the cutting design of the feature sensing element 30 preferably retains 85% to 95% of the chip area of ​​the feature sensing element 30 by making a rounded or beveled cut, but is not limited thereto. Depending on the application, the feature sensing element 30 can be cut to the maximum extent without sacrificing the sensing performance and electrical connection of the feature sensing element 30 (i.e., without damaging the connection pad 310) to effectively reduce the size of the finger feature module 1, but is not limited thereto. Depending on the application, the feature sensing element 30 can have any suitable shape, such as rectangular, square, polygonal, or other geometric shapes.

[0068] The light-emitting element 40 can be any light source that provides light. For example, the light-emitting element 40 can be a single-chip or multi-chip light-emitting diode (LED), a mini-LED, a micro-LED, etc., and the light-emitting element 40 can be a side-emitting or five-sided emitting element (e.g., top / left / right / front / rear side). Figures 2A to 2C As shown, the light-emitting element 40 is preferably disposed on and electrically connected to the first flexible circuit board portion 201 of the flexible circuit board 200, and the light-emitting element 40 and the first circuit board 210 are respectively located on opposite sides of the first flexible circuit board portion 201. In other words, the flexible circuit board 200 preferably has a light source circuit for disposing of the light-emitting element 40 electrically connected thereto. For example, when the flexible circuit board 200 is not folded back, the light-emitting element 40 and the first circuit board 210 may be located on the upper and lower sides of the first flexible circuit board portion 201, respectively (see...). Figure 2C After the flexible circuit board 200 is folded back, the light-emitting element 40 and the first circuit board 210 can be located on the lower and upper sides of the first flexible board portion 201, respectively (see...). Figure 2BIn this embodiment, four light-emitting elements 40 are respectively disposed in four light source accommodating portions 124, but this is not a limitation. For example, two of the four light-emitting elements 40a may be disposed in the flexible plate wings 205 of the first flexible plate portion 201 and protrude toward the light guide seat 10 to be at least partially accommodated in two light source accommodating portions 124a, while the other two light-emitting elements 40b may be disposed on the side of the first flexible plate portion 201 away from the flexible plate wings 205 and protrude toward the light guide seat 10 to be at least partially accommodated in two light source accommodating portions 124b, but this is not a limitation. In other embodiments, the number of light-emitting elements 40 may be different, and multiple light-emitting elements 40 may be disposed in the same light source accommodating portion 124.

[0069] also, Figure 2A and Figure 2B Although the illustration shows circuit boards 212 and 214 of the first circuit board 210 stacked sequentially on the upper side of the first flexible circuit board portion 201, such that the light-emitting element 40 and the first circuit board 210 are located on the lower and upper sides of the first flexible circuit board portion 201 respectively, this is not a limitation. In another embodiment (not shown), at least one of the circuit boards 212 and 214 may be disposed on the lower side of the first flexible circuit board portion 201 and electrically connected thereto, such that the light-emitting element 40 is not directly disposed and electrically connected to the first flexible circuit board portion 201 of the flexible circuit board 200, but is disposed and electrically connected to the lowermost one of the circuit boards 212 and 214 located in the first flexible circuit board portion 201. In yet another embodiment, the rigid wing portion 2121 of the circuit board 212 may be implemented as a rigid board without circuitry to enhance the structural strength of the flexible wing portion 205, thereby facilitating the placement and electrical connection of the light-emitting element 40a to the flexible wing portion 205.

[0070] Please refer to Figure 3A , Figure 3A This is a planar schematic diagram of the light guide base 10 according to the first embodiment of the present invention, showing the relative position of the light-emitting element 40 within the light guide base 10. For example... Figure 3A As shown, the two light source accommodating portions 124a of the board body 120 are respectively disposed on opposite sides of the through hole 122, such that the two light-emitting elements 40a housed in the two light source accommodating portions 124a are respectively located on opposite sides of the bending section 203 of the flexible circuit board 200, and the virtual connection line L1 (e.g., the Y-axis direction) of the light-emitting elements 40a is perpendicular to the bending direction of the bending section 203 (e.g., the Z-axis direction). In other words, in Figure 3AIn the plan view, the two light-emitting elements 40a and the two light source accommodating portions 124a are located on both sides of the through hole 122 (or the bent section 203), such that the virtual connection line L1 of the light-emitting elements 40a and the connection line of the two light source accommodating portions 124a overlap the through hole 122 (or the bent section 203). Furthermore, since the through hole 122 of the light guide seat 10 is eccentrically positioned, it may lead to insufficient light transmission and output in the area near the through hole 122. Therefore, it is preferable that the virtual connection line L1 of the light-emitting elements 40a overlaps with at least one of the bent section 203, the recessed space RS, and the through hole 122 of the light guide seat 10 in the vertical direction (e.g., the Z-axis direction), which helps to improve the overall light output uniformity of the light guide seat 10.

[0071] Please also refer to Figure 3A and Figure 3B , Figure 3B This is an exploded perspective view of the light guide base 10 according to the first embodiment of the present invention. In this embodiment, the plate body 120 preferably includes a fixed plate 120b and a detachable plate 120a. The fixed plate 120b extends from the frame base 110 toward the center of the frame base 110 to form a through hole 113 in the frame base 110. The detachable plate 120a preferably partially covers the through hole 113, so as to define a perforation 122 together with the fixed plate 120b. The detachable plate 120a is detachably disposed on the frame base 110, and the top surface of the detachable plate 120a is preferably coplanar with the top surface of the fixed plate 120b. The detachable plate 120a partially covers the through hole 113, such that the portion of the through hole 113 not covered by the detachable plate 120a forms the perforation 122. The through hole 113 preferably passes through the center of the frame 110 (e.g., the central axis C), and the removable plate 120a partially covers the through hole 113 such that the through hole 122 is eccentrically positioned relative to the center of the frame 110. For example, the fixing plate 120b and the frame 110 can be an integral structure, wherein the fixing plate 120b extends from the middle of the side wall 114 of the frame 110 toward the center of the frame 110 and protrudes beyond the side wall 114 to form a U-shaped plate surrounding the through hole 113, and the center of the frame 110 falls within the area of ​​the through hole 113. Corresponding to the U-shaped fixing plate 120b, the removable plate 120a can have a similar rectangular shape. One end of the detachable plate 120a extends from the open end of the U-shaped plate of the fixed plate 120b toward the bottom of the U-shaped plate to partially cover the through hole 113, such that a through hole 122 is formed at the bottom of the U-shaped plate of the fixed plate 120b and the other end of the detachable plate 120a. In one embodiment, the detachable plate 120a may be positioned in the frame 110 by means of its shape and the through hole 113 forming a tight fit, but is not limited thereto. In another embodiment, the fixed plate 120b may have a support portion 115 (see reference). Figure 4AThis is used to support the removable plate 120a, thereby positioning the removable plate 120a in the frame 110. When the removable plate 120a is positioned in the frame 110, the first portion 21 of the circuit board assembly 20 is disposed in the frame 110 and located above the removable plate 120a, while the second portion 22 of the circuit board assembly 20 protrudes from the through hole 122 and is at least partially located below the removable plate 120a.

[0072] In this embodiment, the fixed plate 120b has two light source accommodating portions 124a (or first light source accommodating portions), which may be recessed and are disposed on opposite sides of the through hole 122. Each light source accommodating portion 124a is used to accommodate at least one light-emitting element 40a. Correspondingly, the detachable plate 120a may have two light source accommodating portions 124b (or second light source accommodating portions), which may be through holes penetrating the detachable plate 120a. The light source accommodating portions 124b and the through hole 122 are located on opposite sides of the center of the frame 110, and the light source accommodating portions 124b are used to accommodate at least one light-emitting element 40b. The light source housing portions 124a and 124b are preferably elongated slots corresponding to the sides (preferably the long sides) of the light-emitting elements 40a and 40b, so that the light emitted from the sides of the light-emitting elements 40a and 40b can effectively enter the fixed plate 120b and the detachable plate 120a of the plate body 120 from the adjacent sidewalls of the light source housing portions 124a and 124b, thereby improving the utilization of light.

[0073] The present invention, through the detachable design of the plate 120 of the light guide base 10, allows for the formation of a larger through hole 113 in the frame 110, effectively improving the assembly operation of the circuit board assembly 20. Furthermore, the present invention also facilitates the circuit board configuration of the circuit board assembly 20 by partially covering the through hole 113 with the detachable plate 120a to jointly define the eccentrically positioned perforation 122 with the fixing plate 120b of the frame 110, thereby reducing the possibility of component peeling. In other words, the light guide base 10 is composed of multiple components (e.g., the frame 110 and the detachable plate 120a), which improves manufacturability and ease of assembly, but is not limited thereto. In other embodiments, the detachable plate 120a may form an integral structure with the frame 110, making the light guide base 10 a single component.

[0074] Furthermore, such as Figures 1A to 1CAs shown, the finger feature module 1 may also include other components, such as a carrier 50 and a cover plate 60, to enhance the integrated application of the finger feature module 1. The carrier 50 serves as the outer shell of the finger feature module 1, supporting the various components of the finger feature module 1. The cover plate 60 is correspondingly disposed on the carrier 50 to provide a surface for the user's finger to place / press. The carrier 50 supports the light guide seat 10, and the bottom of the carrier 50 has an opening 520 through which the circuit board assembly 20 can further extend. Specifically, the carrier 50 has a receiving portion 510 and an opening 520. The receiving portion 510 is used to receive the light guide seat 10 and the feature sensing element 30, the circuit board assembly 20, and the light-emitting element 40 disposed on the light guide seat 10. For example, the carrier 50 may be a housing with a hollow portion, which serves as a receiving portion 510, and the sidewall of the housing surrounding the receiving portion 510 surrounds the sidewall 114 of the frame 110 of the light guide seat 10. An opening 520 is formed at the bottom of the carrier 50 and communicates with the receiving portion 510 to allow the circuit board assembly 20 to extend out of the carrier 50 through the opening 520. In an embodiment where the finger feature module 1 has a switch 240 that performs a button function, the opening 520 is preferably provided corresponding to the switch 240, allowing the switch 240 to be exposed through the opening 520 to correspond to the trigger of an electronic device (e.g., a keyboard). When the user presses the cover plate 60, the switch 240 abuts against the trigger of the electronic device to generate a trigger signal. One end of the third circuit board 230 (i.e., the interface board) included in the circuit board assembly 20 may extend downward through the opening 520 out of the carrier 50, thereby connecting to the system end. In this embodiment, the shape of the carrier 50 preferably corresponds to that of the light guide seat 10, such as rectangular (or square), but is not limited thereto. Depending on the actual application, the carrier 50 can have any suitable shape, such as circular, polygonal, or other geometric shapes. Furthermore, the carrier 50 may also include a positioning part 530 for attaching to an electronic device. For example, the positioning part 530 may be implemented as a column protruding downward from the bottom of the housing, which can be inserted into a slot of the electronic device to achieve a positioning effect, but is not limited thereto. The carrier 50 can be positioned on the electronic device in any suitable manner.

[0075] A cover plate 60 is disposed on the support 50 to cover the receiving portion 510, and the cover plate 60 preferably has a light-transmitting portion 610. In the vertical direction (or the light-emitting direction / Z-axis direction), the top surface (i.e., the light-emitting surface 111) of the sidewall 114 of the light guide 10 at least partially overlaps with the light-transmitting portion 610. In other words, the orthographic projection of the light-emitting surface 111 of the light guide 10 onto the cover plate 60 preferably at least partially overlaps with the light-transmitting portion 610. Specifically, the cover plate 60 is a sheet made of, for example, glass, polymer, etc., and the cover plate 60 is preferably connected to the feature sensing element 30 by an adhesive material, so that the cover plate 60 and the support 50 have an integrated visual appearance, but is not limited thereto. In one embodiment, the cover plate 60 may be entirely the light-transmitting portion 610, but is not limited thereto. In this embodiment, the light-transmitting portion 610 is preferably an annular band (e.g., a square ring) formed around the periphery of the cover plate 60. When the light guide seat 10 guides the light from the light-emitting element 40 upward through the side wall 114 of the plate 120 and the frame 110 and emits it from the top surface (i.e. the light-emitting surface 111) of the side wall 114, the light can be emitted only from the light-transmitting part 610, forming a halo around the feature sensing element 30, which not only indicates the position of the sensing area to the user, but also has an optical effect that enhances the appearance.

[0076] Please refer to Figure 4A and Figure 4B , Figure 4A and Figure 4B These are exploded perspective and planar schematic diagrams of the light guide base 11 according to the second embodiment of the present invention. The differences between this embodiment and the foregoing embodiments will be described below; for similar or identical details, please refer to the relevant descriptions of the foregoing embodiments. Figure 4A and Figure 4B As shown, the light guide base 11 in this embodiment can be used to replace Figure 1B The light guide base 10 differs from the previous embodiment in the design of the detachable plate 121a and the fixed plate 121b. Similar to the previous embodiment, when the detachable plate 121a is disposed on the frame base 110, the top surface of the detachable plate 121a is preferably coplanar with the top surface of the fixed plate 121b, but this is not a limitation. Specifically, the light guide base 11 has a narrow hexagonal detachable plate 121a, such that the short axis of the detachable plate 121a is arranged along the X-axis direction and the long axis of the detachable plate 121a is arranged along the Y-axis direction. For example, the two parallel sides of the hexagon are preferably parallel to the extension direction of the through hole 122 (i.e., the Y-axis direction), and each of the two parallel sides has a pair of inclined sides extending outward and inclined to each other at both ends. Depending on the actual application, the two inclined sides can have the same or different inclination angles or lengths. A pair of lugs 125 are preferably disposed at the connection of the pair of inclined sides on both sides, such that the lugs 125 preferably protrude outward from both sides of the detachable plate 121a along the Y-axis direction. In one embodiment, the line connecting the pair of lugs 125 is preferably parallel to the extension direction of the through hole 122 (i.e., the Y-axis direction), but is not limited thereto.

[0077] Corresponding to the external design of the detachable plate 121a, the fixing plate 121b preferably protrudes from the surrounding sidewalls 114 of the frame 110 toward the center of the frame 110 to form a corresponding through hole 113A. The fixing plate 121b is provided with a support portion 115 to support the lug 125 of the detachable plate 121a. For example, the support portion 115 is a recess formed by the plate surface of the fixing plate 121b facing downwards, and the two support portions 115 are preferably arranged along the Y-axis direction on opposite sides of the frame 110 and adjacent to the through hole 113A. Furthermore, the support portions 115 are preferably arranged near the central area of ​​the frame 110, such that the line connecting the support portions 115 is close to or even passes through the center of the frame 110. When the removable plate 121a is disposed on the frame base 110, the lug 125 is disposed on the support portion 115, and the removable plate 121a partially covers the through hole 113A, so as to define the through hole 122 together with the fixed plate 121b. Specifically, the removable plate 121a partially covers the through hole 113A in such a way that it covers the center of the frame base 110, so that the through hole 122 is eccentrically disposed relative to the center of the frame base 110. Similar to Figure 3A and Figure 3B In one embodiment, the fixing plate 121b has two recessed light source receiving portions 124a, respectively disposed on opposite sides of the through hole 122. In this embodiment, the portion of the through hole 113A not covered by the removable plate 121a may also form at least one light source receiving portion 124b. Specifically, the through hole 113A can be divided into a hexagonal region for mounting the removable plate 121a, a region for forming the through hole 122, and a region for forming the light source receiving portion 124b, and the hexagonal region for mounting the removable plate 121a is preferably located between and communicates with the region for forming the through hole 122 and the region for forming the light source receiving portion 124b. Thus, when the removable plate 121a is disposed on the frame 110, the portion of the through hole 113A not covered by the removable plate 121a can be formed as both the light source receiving portion 124b and the through hole 122. The light source housing 124b and the through hole 122 are located on opposite sides of the frame 110 relative to the center of the frame 110. The light source housings 124a and 124b are preferably elongated slots corresponding to the sides (preferably the long sides) of the light-emitting elements 40a and 40b, and the major and minor axes of the light source housings 124a and 124b are preferably arranged along the X-axis and Y-axis directions, respectively. In this embodiment, the light source housings 124a and 124b are preferably located at the four corners adjacent to the detachable plate 121a, for example, on opposite sides of the lug 125, so that the light emitted by the light-emitting elements 40a and 40b avoids the connection interface between the detachable plate 121a and the frame 110 (and the fixing plate 121b) as much as possible, thereby reducing light transmission loss.

[0078] Please refer to Figures 5A to 5C , Figure 5A and Figure 5B These are exploded views and partial cross-sectional views of the finger feature module according to the third embodiment of the present invention, respectively. Figure 5C This is a plan view of the light guide base 12 according to the third embodiment of the present invention. The differences between this embodiment and the previous embodiments will be described below. For details that are the same or similar to those in the previous embodiments (e.g., details of the circuit board assembly 20, feature sensing element 30, light-emitting element 40, carrier 50, and cover plate 60), please refer to the relevant descriptions in the previous embodiments. Figures 5A to 5C As shown, the plate 120A of the light guide base 12 is preferably connected to the middle section of the frame 110 (or sidewall 114) to divide the accommodating space 112 of the light guide base 12 into an upper accommodating chamber 112U and a lower accommodating chamber 112D, as described in the previous embodiment. In this embodiment, the plate 120A may include a through hole 122 and a central groove 126. The central groove 126 communicates with the through hole 122, and the long axis of the central groove 126 is preferably perpendicular to the long axis of the through hole 122. Specifically, corresponding to the long axis of the through hole 122 being arranged along the Y-axis, the long axis of the central groove 126 is preferably arranged along the X-axis and extends beyond the through hole 122, so that the central groove 126 communicates with the through hole 122 to form a cross-shaped through hole. The central slot 126 allows the passage of the third circuit board 230 (e.g., an interface board) of the circuit board assembly 20, and the through hole 122 allows the passage of the second circuit board 220 (e.g., a switch board). In one embodiment, the board body 120A may further include an expansion slot 128. The expansion slot 128 preferably extends outward from the intersection of the central slot 126 and the through hole 122, so that the cross-shaped through hole becomes a funnel-shaped space that can be used for the second circuit board 220 and the flexible circuit board 200 to rotate through, thereby further improving the ease of assembly. In this way, the light guide seat 12 can have an integral structure, eliminating the light transmission loss caused by the connection interface of multiple components in the board body 120A, and allowing the circuit board assembly 20 to be assembled smoothly without the need for a detachable board.

[0079] Similar to the aforementioned embodiment, the plate 120A is provided with multiple light source accommodating portions 124a and 124b, and the light-emitting elements 40a and 40b are respectively disposed in the light source accommodating portions 124a and 124b. Figure 5AAs shown, two light source accommodating portions 124a are respectively disposed at both ends of the long axis of the through hole 122, and the connecting line of the light source accommodating portions 124a or the virtual connecting line L1 of the light-emitting element 40a preferably overlaps with the through hole 122 (or the bent section 203). The light source accommodating portions 124a and 124b are disposed at opposite ends of the central groove 126 along the long axis of the central groove 126, and the two light source accommodating portions 124b are respectively located on opposite sides of the central groove 126 relative to the long axis of the central groove 126. In this embodiment, the light source accommodating portions 124a and 124b are preferably elongated slots corresponding to the sides (preferably the long sides) of the light-emitting elements 40a and 40b, and the long axis of the light source accommodating portions 124a and 124b preferably extends toward the center of the frame 110 to form a radial configuration, but this is not a limitation.

[0080] Please refer to Figures 6A to 6C , Figure 6A This is a partial cross-sectional schematic diagram of the finger feature module according to the fourth embodiment of the present invention. Figure 6B and Figure 6C These are, respectively, a perspective view and a planar view of the light guide base 13 according to the fourth embodiment of the present invention. The differences between this embodiment and the previous embodiments will be described below; for similar or identical details, please refer to the relevant descriptions of the previous embodiments. Figures 6A to 6C As shown, the light guide base 13 in this embodiment can be used to replace Figure 5AThe light guide seat 12. In this embodiment, the plate body 120B includes a first plate body portion 120B1 and a second plate body portion 120B2, and the first plate body portion 120B1 and the second plate body portion 120B2 may have different thicknesses. For example, the thickness of the first plate body portion 120B1 is less than the thickness of the second plate body portion 120B2, and the first plate body portion 120B1 preferably extends from the middle section of the side wall 114 of the frame 110 toward the center of the frame 110 to divide the receiving space 112 of the light guide seat 13 into an upper receiving chamber 112U and a lower receiving chamber 112D, as described in the previous embodiment. The second plate body portion 120B2 preferably extends from the side wall 114 of the frame 110 opposite to the first plate body portion 120B1 toward the first plate body portion 120B1, such that a through hole 122 is formed between the first plate body portion 120B1 and the second plate body portion 120B2. In this embodiment, the first plate portion 120B1 preferably extends at least to or beyond the center of the frame base 110, so that the through hole 122 is eccentrically positioned. In other words, the extension length of the first plate portion 120B1 (e.g., the length in the X-axis direction) is preferably greater than or equal to more than half the width of the accommodating space 112 of the frame base 110. The thickness of the second plate portion 120B2 is preferably less than or equal to the height of the side wall 114 of the frame base 110 (i.e., the distance from the bottom surface to the top surface of the side wall 114). In this embodiment, the maximum thickness of the second plate portion 120B2 is preferably designed not to exceed the height of the first plate portion 120B1 at the side wall 114 (i.e., the distance from the bottom surface of the side wall 114 to the position where the first plate portion 120B1 is positioned), so that the top surface of the second plate portion 120B2 and the top surface of the first plate portion 120B1 can be coplanar, but this is not a limitation. Depending on the actual application, the thickness and position of the second plate portion 120B2 are not limited to being coplanar with the first plate portion 120B1. For example... Figure 6A As shown, in this embodiment, the thickness of the second plate portion 120B2 is equal to the sum of the height of the lower receiving chamber 112D in the Z-axis direction and the thickness of the first plate portion 120B1, such that the width of the upper receiving chamber 112U in the X-axis direction is greater than the width of the lower receiving chamber 112D. In other words, the second plate portion 120B2 can be regarded as the bottom plate of the frame 110. Therefore, "the plate has an eccentrically set through hole" can be expressed as the plate itself forming a closed through hole at an eccentric position as a through hole, or the plate and the side wall or bottom plate of the frame jointly define an opening at an eccentric position such that the opening is located between the plate and the side wall or bottom plate of the frame as a through hole.

[0081] Furthermore, in this embodiment, the perforation 122 is preferably a cap shape including a top area 122a and a brim area 122b. For example, in the Y-axis direction, the width of the top area 122a is smaller than the width of the brim area 122b. Two light source receiving portions 124a are disposed on the second plate portion 120B2 and are preferably located on opposite sides of the top area 122a, so that the virtual connection line L1 of the light-emitting element 40a can overlap with the top area 122a (or the bent section 203) of the perforation 122. The brim area 122b extends from the top area 122a toward the center of the frame 110 and is located between the top area 122a and the first plate portion 120B1, which can improve the convenience of the circuit board assembly 20 assembly operation. In addition, similar to the aforementioned embodiment, two light source receiving portions 124b are disposed on the first plate portion 120B1 for mounting the light-emitting element 40b. The plate 120B of the light guide base 13 and the frame base 110 are integrated into one structure, which can eliminate the light transmission loss caused by the connection interface of multiple components of the plate 120B, and provide sufficient space for assembly operation and / or setting of switch 240.

[0082] Please refer to Figures 7A to 7C , Figure 7A This is a partial cross-sectional schematic diagram of the finger feature module according to the fifth embodiment of the present invention. Figure 7B for Figure 7A A three-dimensional schematic diagram of a partially exploded flexible circuit board 200 before bending in the circuit board assembly. Figure 7C This is a plan view of the light guide base 13A according to the fifth embodiment of the present invention. The differences between this embodiment and the previous embodiments will be described below; for similar or identical details, please refer to the relevant descriptions of the previous embodiments. Figures 7A to 7C As shown, in this embodiment, the light guide seat 13A has a similar structure to... Figure 6B The structure is similar to that of the light guide base 13, except that the plate 120B is disposed at the bottom of the frame 110, so that the light guide base 13A has a single accommodating space 112. Specifically, the first plate portion 120B1 and the second plate portion 120B2 of the plate 120B preferably have the same thickness and are respectively connected to the bottom of the sidewalls 114 on opposite sides of the frame 110. The first plate portion 120B1 and the second plate portion 120B2 extend toward each other to form a through hole 122, as described above. Furthermore, as Figure 7BAs shown, in this embodiment, the circuit board assembly can have different circuit board configurations. The configuration of the flexible circuit board 200 of the circuit board assembly is similar to that of the aforementioned embodiments, the difference being the configuration positions of circuit boards 212, 214, 222, and 224. For example, circuit boards 212 and 222 can be implemented as two circuit boards cut from the same circuit board, and circuit boards 214 and 224 can also be implemented as two circuit boards cut from the same circuit board. Circuit boards 212 and 222 are respectively disposed and electrically connected to the same side (e.g., the lower side before bending) of the first flexible board portion 201 and the second flexible board portion 202 of the flexible circuit board 200, while circuit boards 214 and 224 are respectively stacked and electrically connected to circuit boards 212 and 222. Before bending or Figure 7A When the flexible circuit board 200 is straightened, circuit boards 212 and 222 are located on the same layer or at the same height, and circuit boards 214 and 224 are also located on the same layer or at the same height. Furthermore, since the board body 120B is located at the bottom of the frame 110, the second circuit board 220 located on the second part 22 of the circuit board assembly is located at the bottom of the light guide seat 13A, and the switch 240 is at least partially located in the opening 520 of the carrier 50, so that the switch 240 is exposed from the opening 520.

[0083] Please refer to Figures 8A to 8C , Figures 8A to 8C These are partial cross-sectional schematic diagrams of circuit board assemblies according to different embodiments of the present invention, wherein... Figures 8A to 8C Any circuit board assembly (e.g., 20A, 20B, or 20C) can replace the circuit board assembly 20 of the aforementioned embodiments and be applied to the finger feature module of any of the aforementioned embodiments. For example... Figure 8AAs shown, in this embodiment, the circuit board assembly 20A includes a rigid board 216 and a flexible circuit board 200. The rigid board 216 is located in the first portion of the circuit board assembly 20A (corresponding to the first portion 21 in the aforementioned embodiment), and the flexible circuit board 200 is used to support the rigid board 216. The feature sensing element 30 can be disposed and electrically connected to the flexible circuit board 200 and at least partially overlaps with the rigid board 216 through the flexible circuit board 200. Specifically, the first portion of the circuit board assembly 20A is the portion disposed above the board body, and the rigid board 216 can be used to replace the first circuit board 210 in the aforementioned embodiment and has no circuitry, serving as a rigid reinforcing plate to support the feature sensing element 30. For example, a rigid plate 216 is preferably disposed on the lower surface of the first flexible section 201 of the flexible circuit board 200. The feature sensing element 30 can be directly disposed on the rigid plate 216 and electrically connected to the upper surface of the first flexible section 201 of the flexible circuit board 200, so that the feature sensing element 30 is supported by the rigid plate 216 disposed below. Furthermore, the circuit board assembly 20A may also include circuit boards 223 and 225. Circuit boards 223 and 225 are respectively disposed on the lower and upper surfaces of the second flexible section 202 of the flexible circuit board 200, and are recessed relative to the rigid plate 216. The flexible circuit board 200 has a bending section 203 for connecting the first flexible section 201 and the second flexible section 202. The feature circuit may be disposed at least in the flexible circuit board 200, or at least one of the flexible circuit board 200, circuit boards 223, and circuit boards 225.

[0084] like Figure 8B As shown, the circuit board assembly 20B includes a flexible circuit board 200, a first circuit board 218, and a second circuit board 217. The first circuit board 218 and the second circuit board 217 are respectively disposed above and below the flexible circuit board 200. A gap G1 is formed between one end of the first circuit board 218 and the flexible circuit board 200, and the second circuit board 217 is recessed relative to the end of the first circuit board 218. Specifically, the end of the first circuit board 218 may not be adhered to the flexible circuit board 200, so that the unadhesive end of the first circuit board 218 forms a free end, and the second circuit board 217 is recessed relative to the free end (or gap G1) of the first circuit board 218, so that the second circuit board 217 and the gap G1 do not overlap at least partially, thereby allowing the flexible circuit board 200 to be bent relative to the first circuit board 218. In this way, the flexible circuit board 200 can easily pass through the through hole 122 of the aforementioned embodiment.

[0085] like Figure 8CAs shown, the circuit board assembly 20C includes a flexible circuit board 200, a first circuit board 213, and a second circuit board 215. The first circuit board 213 and the second circuit board 215 are respectively disposed above and below the flexible circuit board 200. A gap G2 is formed between one end of the first circuit board 213 and the flexible circuit board 200, and the second circuit board 215 is recessed relative to the end of the first circuit board 213. In this embodiment, the circuit board assembly 20C also includes an intermediate circuit board 211. The intermediate circuit board 211 is located between the first circuit board 213 and the flexible circuit board 200, and the intermediate circuit board 211 is recessed relative to the end of the first circuit board 213 to form the gap G2. Specifically, in the extension (or long axis) direction of the flexible circuit board 200, the length of the first circuit board 218 is greater than the length of the intermediate circuit board 211, such that when the first circuit board 218 is stacked on the intermediate circuit board 211, a non-overlapping area is formed, and the gap G2 is generated by the thickness of the intermediate circuit board 211. The second circuit board 215 is recessed relative to the non-overlapping area (or gap G2) of the first circuit board 218, such that the second circuit board 215 and the gap G2 are at least partially non-overlapping, thereby allowing the flexible circuit board 200 to be bent relative to the first circuit board 213. In this way, the flexible circuit board 200 can easily pass through the through-hole 122 of the aforementioned embodiment.

[0086] It should be noted here that Figures 8A to 8C Although switch 240 is not shown in the diagram, depending on the actual application, circuit board assemblies 20A, 20B, and 20C may or may not include switch 240 to provide or not provide button functionality.

[0087] The finger feature module of the present invention has an off-center perforation, which facilitates the placement of the circuit board and reduces the possibility of light-emitting components or electronic components peeling off. Furthermore, the finger feature module of the present invention has a modular light guide base, which improves the manufacturability and ease of assembly of the components. In addition, the light guide base of the finger feature module of the present invention has separate upper and lower receiving chambers to increase the flexibility of circuit board placement.

[0088] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A finger feature module, characterized in that... Include: A light guide base includes a frame and a plate disposed in the frame, the plate having an eccentrically arranged through hole; A circuit board assembly having a first part and a second part, the first part of the circuit board assembly being disposed in the frame and located above the board body, and the second part of the circuit board assembly extending through the through hole so that at least a portion of the circuit board assembly is located below the board body; A feature sensing element is disposed on the first part of the circuit board assembly; as well as Multiple light-emitting elements are electrically connected to the circuit board assembly. Two of the multiple light-emitting elements are located on opposite sides of the through hole, and the virtual connection between the two light-emitting elements overlaps with the through hole.

2. The finger feature module as described in claim 1, characterized in that, The plate is connected to the middle section of the frame to define an upper receiving chamber and a lower receiving chamber above and below the plate in the frame, respectively, and the perforation connects the upper receiving chamber and the lower receiving chamber.

3. The finger feature module as described in claim 2, characterized in that, The circuit board assembly includes a first circuit board and a second circuit board, the first circuit board being located in the upper receiving chamber and the second circuit board being located in the lower receiving chamber.

4. The finger feature module as described in claim 1, characterized in that, The plate is provided with multiple light source housings, and the multiple light-emitting elements are respectively disposed in the multiple light source housings.

5. The finger feature module as described in claim 1, characterized in that, The plate includes a fixed plate and a detachable plate. The fixed plate extends from the frame to the center of the frame to form a through hole in the frame. The detachable plate partially covers the through hole to define the perforation together with the fixed plate.

6. The finger feature module as described in claim 1, characterized in that, The plate also has a central groove that communicates with the perforation, and the long axis of the central groove is perpendicular to the long axis of the perforation.

7. The finger feature module as described in claim 6, characterized in that, The plate also has an expansion groove that extends outward from the intersection of the central groove and the perforation.

8. A finger feature module, characterized in that... Include: A light guide base includes a frame and a removable plate, the removable plate being detachably disposed on the frame to define a through hole in the frame; A circuit board assembly having a first portion and a second portion, the first portion of the circuit board assembly being disposed in the frame and located above the removable plate, and the second portion of the circuit board assembly extending through the through hole such that at least a portion of the circuit board assembly is located below the removable plate; A feature sensing element is disposed on the first portion of the circuit board assembly; and At least one light-emitting element is electrically connected to the circuit board assembly so that the at least one light-emitting element emits light toward the light guide base.

9. The finger feature module as described in claim 8, characterized in that, The frame has a fixing plate that extends from the frame toward the center of the frame to form a through hole in the frame. A removable plate partially covers the through hole, such that the portion of the through hole not covered by the removable plate forms the perforation.

10. The finger feature module as described in claim 9, characterized in that, The through hole covers the center of the frame, and the removable plate partially covers the through hole in such a way that it covers the center of the frame, such that the through hole is eccentrically positioned relative to the center of the frame.

11. The finger feature module as described in claim 9, characterized in that, The portion of the through hole not covered by the removable plate also forms at least one light source housing.

12. The finger feature module as described in claim 9, characterized in that, The fixing plate has two first light source accommodating portions, which are respectively disposed on opposite sides of the perforation. Each of the two first light source accommodating portions is used to accommodate at least one of the at least one light-emitting element.

13. The finger feature module as described in claim 12, characterized in that, The detachable plate has a second light source accommodating portion, which and the perforation are located on opposite sides of the center of the frame, and the second light source accommodating portion is used to accommodate at least one of the at least one light-emitting elements.

14. The finger feature module as described in claim 1 or 8, characterized in that, The circuit board assembly includes a first circuit board and a second circuit board. The first circuit board is located in the first part of the circuit board assembly and covers the through hole. The second circuit board is located in the second part of the circuit board assembly and is recessed relative to the first circuit board to form a recessed space.

15. The finger feature module as described in claim 14, characterized in that, The circuit board assembly includes a flexible circuit board for carrying the first circuit board and the second circuit board. The flexible circuit board has a bent section passing through the through hole and the bent section is located in the retracted space.

16. The finger feature module as described in claim 15, characterized in that, The bent section has a gap between itself and the sidewall of the frame, which is 10% to 45% of the width of the first circuit board.

17. The finger feature module as described in claim 1 or 8, characterized in that, The circuit board assembly includes a rigid board and a flexible circuit board. The rigid board is located in the first part of the circuit board assembly. The flexible circuit board is used to support the rigid board. The feature sensing element is electrically connected to the flexible circuit board and the feature sensing element overlaps at least partially with the rigid board through the flexible circuit board.

18. The finger feature module as described in claim 1 or 8, characterized in that, The circuit board assembly includes a flexible circuit board, a first circuit board, and a second circuit board. The first circuit board and the second circuit board are respectively disposed on the upper side and the lower side of the flexible circuit board. There is a gap between the end of the first circuit board and the flexible circuit board, and the second circuit board is retracted relative to the end of the first circuit board.

19. The finger feature module as described in claim 18, characterized in that, The circuit board assembly also includes an intermediate circuit board located between the first circuit board and the flexible circuit board, the intermediate circuit board being recessed relative to the end of the first circuit board to form the gap.

20. A finger feature module, characterized in that... Include: A light guide base includes a frame and a plate. The frame defines an accommodating space, and the plate is disposed on the frame to divide the accommodating space into an upper accommodating chamber and a lower accommodating chamber. The plate has a through hole that connects the upper accommodating chamber and the lower accommodating chamber. A circuit board assembly includes a flexible circuit board, a first circuit board, and a second circuit board. The first circuit board and the second circuit board are disposed on the flexible circuit board, and the flexible circuit board extends from the upper receiving chamber through the through hole to the lower receiving chamber, such that the first circuit board is located in the upper receiving chamber and the second circuit board is located in the lower receiving chamber. A feature sensing element is disposed on the first circuit board; as well as The light-emitting element is electrically connected to the circuit board assembly so that the light-emitting element emits light toward the light guide base.

21. The finger feature module as described in claim 20, characterized in that, The first circuit board covers the perforation, and the second circuit board is recessed relative to the first circuit board.

22. The finger feature module as described in any one of claims 1, 8, and 20, characterized in that, The finger feature module also includes a carrier for supporting the light guide seat, the bottom of which has an opening through which the circuit board assembly extends.

23. The finger feature module as described in claim 22, characterized in that, The circuit board assembly also includes a switch exposed from the opening to enable the finger feature module to function as a button.

24. The finger feature module as described in claim 20, characterized in that, The flexible circuit board has a slot to define a first flexible board portion, a second flexible board portion, and a bending section. The first circuit board and the second circuit board are respectively disposed in the first flexible board portion and the second flexible board portion. The bending section is connected between the first flexible board portion and the second flexible board portion, and the flexible circuit board is bent relative to the slot to form the bending section.

25. The finger feature module as described in claim 24, characterized in that, Before the flexible circuit board is bent, the first flexible board portion has a pair of flexible board wings on the side adjacent to the second flexible board portion, and the pair of flexible board wings are located on both sides of the bending section.

26. The finger feature module as described in claim 20, characterized in that, The light-emitting element is located on the flexible circuit board.

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