Fingerprint identification module and electronic device

Abstract

The utility model provides a fingerprint identification module and an electronic device, and the module comprises a light guide part which comprises a light guide body and a step, the light guide body is provided with a through hole, the step is disposed on the hole wall of the through hole in a protruding manner, the step is provided with an avoiding hole, and the step is provided with a first surface and a second surface which are opposite to each other; the circuit board comprises a first circuit board, a second circuit board and a third circuit board, the first circuit board is located on the side, away from the second circuit board, of the first surface, the second circuit board is located on the side, away from the first surface, of the second surface, and the two ends of the third circuit board are connected with the first circuit board and the second circuit board respectively; the light source is located in the avoiding hole and arranged on the side, close to the first circuit board, of the second circuit board; and the fingerprint identification chip is located in the through hole, and the fingerprint identification chip is arranged on one side, deviating from the step, of the second circuit board. According to the fingerprint identification module, the fingerprint identification efficiency is improved, the fingerprint identification chip, the circuit board and the light source are all integrated in the light guide part, and the size of the fingerprint identification module can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of biometric identification, in particular to a fingerprint identification module and an electronic device. BACKGROUND

[0002] The existing fingerprint identification module is widely used in electronic devices, such as notebook computers, game consoles, and door locks. However, in a dark environment, a user cannot easily find the location of the fingerprint identification module, resulting in inconvenience for the user and low efficiency of fingerprint identification. CONTENT OF THE UTILITY MODEL

[0003] In view of the above, it is necessary to provide a fingerprint identification module and an electronic device to improve the efficiency of fingerprint identification.

[0004] The first aspect of the embodiment of the present application provides a fingerprint identification module, comprising: a light guide member, comprising a light guide body and a step, a through hole is formed in the light guide body, the step is protruded on the hole wall of the through hole, an avoiding hole is formed in the step and communicates with the through hole, and the step has opposite first and second surfaces; a circuit board, comprising a first circuit board, a second circuit board and a third circuit board, the first and second circuit boards are arranged in the through hole and located on opposite sides of the step, the first circuit board is located on the side of the first surface away from the second circuit board, the second circuit board is located on the side of the second surface away from the first surface, and the third circuit board is arranged in the avoiding hole and the two ends of the third circuit board are connected to the first and second circuit boards respectively, so that the first, second and third circuit boards are electrically connected; a light source located in the avoiding hole, the light source is arranged on the side of the second circuit board close to the first circuit board and electrically connected to the second circuit board; a fingerprint identification chip located in the through hole, the fingerprint identification chip is arranged on the side of the second circuit board away from the step and electrically connected to the second circuit board; and the light guide member is used to guide the light emitted by the light source out and indicate the position of the fingerprint identification chip.

[0005] In the scheme provided by the embodiment of the present application, by arranging the light source and the light guide member surrounding the fingerprint identification chip and the light source, when the light source emits light, the light guide member guides the light emitted by the light source out and indicates the position of the fingerprint identification chip, so that the user can quickly find the position of the fingerprint identification chip and perform fingerprint identification, thereby improving the efficiency of fingerprint identification. At the same time, the fingerprint identification chip, the circuit board and the light source are integrated in the light guide member, which can reduce the volume of the fingerprint identification module and is conducive to the miniaturization of the fingerprint identification module.

[0006] In a possible implementation, the light guide further includes: a light-blocking ink layer, the light-blocking ink layer is arranged on the outer circumferential wall of the light guide body, so as to avoid light from the outer circumferential wall of the light guide body.

[0007] In the scheme provided by the embodiments of the present application, when the light source emits light, the light-blocking ink layer of the outer circumferential wall of the light guide body can avoid light from the outer circumferential wall of the light guide body, and the light guide body guides the light emitted by the light source from one end of the light guide body close to the fingerprint identification chip and indicates the position of the fingerprint identification chip, so that the user can quickly find the position of the fingerprint identification chip and perform fingerprint identification, thereby improving the efficiency of fingerprint identification.

[0008] In a possible implementation, the light guide further includes: a light guide ink layer, the light guide ink layer is arranged on the hole wall of the through hole close to the second surface, the second surface and the hole wall of the avoiding hole, so as to uniformly diffuse the light to the light guide body and indicate the position of the fingerprint identification chip.

[0009] In the scheme provided by the embodiments of the present application, when the light source emits light, the light guide ink layer can uniformly diffuse the light to the light guide body and indicate the position of the fingerprint identification chip, prevent local area from being bright, and play a role of uniform light, so that the user can quickly find the position of the fingerprint identification chip and perform fingerprint identification, thereby improving the efficiency of fingerprint identification.

[0010] In a possible implementation, the light guide further includes: at least one positioning protrusion, the positioning protrusion is arranged on the first surface, the first circuit board is provided with a positioning hole corresponding to the position of the positioning protrusion, and the positioning protrusion extends into the corresponding positioning hole.

[0011] In the scheme provided by the embodiments of the present application, by arranging the positioning protrusion and the positioning hole, the light guide and the first circuit board can be positioned, so that the positions of the light guide and the first circuit board are fixed.

[0012] In a possible implementation, the fingerprint identification module further includes: an adhesive member, the adhesive member is arranged between the first circuit board and the first surface.

[0013] In the scheme provided by the embodiments of the present application, by arranging the adhesive member, the first circuit board can be adhered to the first surface of the step, so as to fix the positioned first circuit board.

[0014] In a possible implementation, the fingerprint identification module further includes: a button, the button is arranged on the side of the first circuit board away from the step and is electrically connected with the first circuit board, and the button is arranged opposite to the fingerprint identification chip.

[0015] In the scheme provided by the embodiment of the present application, the key is arranged opposite to the fingerprint identification chip, and the key is arranged corresponding to the avoiding hole, so that the key can perform corresponding operation when the fingerprint identification chip is pressed.

[0016] In a possible implementation, the light guide body is provided with a connecting hole at one end close to the first surface, the connecting hole being in communication with the fitting groove, and the fingerprint identification module further comprises a reflecting piece, the reflecting piece being attached to the groove bottom of the fitting groove, and the reflecting piece being provided with a receiving hole, and the key being located in the receiving hole.

[0017] In the scheme provided by the embodiment of the present application, the light source can be arranged to reflect the light rays entering the avoiding hole, and the reflected light rays can be guided out from one end of the light guide body close to the fingerprint identification chip and indicate the position of the fingerprint identification chip, so that the light intensity of the light rays emitted from one end of the light guide body close to the fingerprint identification chip is high, and thus the user can quickly find the position of the fingerprint identification chip and perform fingerprint identification, and the efficiency of fingerprint identification is improved.

[0018] In a possible implementation, the light guide body is provided with a connecting hole at one end close to the first surface, the connecting hole being in communication with the fitting groove, and the first circuit board is provided with one end extending out of the connecting hole, and the fingerprint identification module further comprises a peripheral device, the peripheral device being arranged at one end of the first circuit board extending out of the connecting hole and being electrically connected with the first circuit board, and a connector, the connector being arranged at one end of the first circuit board extending out of the connecting hole and being located at one side of the peripheral device, and the connector being electrically connected with the first circuit board.

[0019] In the scheme provided by the embodiment of the present application, the peripheral device and the connector can be arranged to connect the fingerprint identification module with the outside, so as to realize the identification function of the fingerprint identification module.

[0020] In a possible implementation, the third circuit board is provided with a plurality of hollow areas, and the light source comprises a plurality of sub-light sources, and the plurality of sub-light sources correspond to the plurality of hollow areas respectively.

[0021] In the scheme provided by the embodiment of the present application, the plurality of sub-light sources correspond to the plurality of hollow areas on the third circuit board respectively, so that the third circuit board can avoid shielding the light rays emitted by the sub-light sources, and the light intensity of the light rays emitted from one end of the light guide body close to the fingerprint identification chip is high, and thus the user can quickly find the position of the fingerprint identification chip and perform fingerprint identification, and the efficiency of fingerprint identification is improved.

[0022] The second aspect of the embodiment of the present application further provides an electronic device, comprising a main body and the fingerprint identification module according to any one of the above embodiments, and the fingerprint identification module is arranged on the main body.

[0023] In the solution provided in this application embodiment, by setting a light source and a light guide surrounding the fingerprint recognition chip and the light source, when the light source emits light, the light guide guides the light emitted by the light source and indicates the position of the fingerprint recognition chip, so that the user can quickly find the position of the fingerprint recognition chip and perform fingerprint recognition, thereby improving the efficiency of fingerprint recognition; at the same time, the fingerprint recognition chip, circuit board and light source are all integrated in the light guide, which can reduce the size of the fingerprint recognition module and is conducive to the miniaturization of the fingerprint recognition module. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the fingerprint recognition module provided in the embodiments of this application.

[0025] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the fingerprint recognition module along line AA.

[0026] Figure 3 yes Figure 1 The diagram shows the exploded structure of the fingerprint recognition module.

[0027] Figure 4 yes Figure 3 The fingerprint recognition module shown is a three-dimensional structural diagram from another angle.

[0028] Figure 5 yes Figure 1 The circuit board, light source, and fingerprint recognition chip shown are front views.

[0029] Figure 6 This is a partial three-dimensional structural schematic diagram of the electronic device provided in the embodiments of this application.

[0030] Key component symbols: fingerprint recognition module 100, light guide 10, light guide body 11, through hole 111, bonding groove 112, connecting hole 113, step 12, clearance hole 121, first surface 122, second surface 123, light-shielding ink layer 13, light-guiding ink layer 14, positioning protrusion 15, circuit board 20, first circuit board 21, positioning hole 211, second circuit board 22, third circuit board 23, hollow area 231, light source 30, sub-light source 31, fingerprint recognition chip 40, adhesive 50, button 60, reflector 70, receiving hole 71, peripheral device 80, connector 90, main body 200, electronic device 1000. Detailed Implementation

[0031] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are intended to explain the present application, and are not to be understood as limiting the present application.

[0032] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0033] In the description of the present application, it should be noted that, unless otherwise specifically defined and limited, the term "connection" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0035] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are intended to explain the present application, and are not to be understood as limiting the present application.

[0036] Please refer to Figure 1 and Figure 2The first aspect of the embodiment of the present application provides a fingerprint identification module 100, which comprises a light guide 10, a circuit board 20, a light source 30 and a fingerprint identification chip 40.

[0037] Please see Figure 3 The light guide 10 comprises a light guide body 11 and a step 12. The light guide body 11 is substantially in a T-shaped structure. The light guide body 11 can be made of a light guide material, which is any one of polystyrene (PS), polycarbonate (PC) and polymethyl methacrylate (PMMA). The light guide body 11 is provided with a through hole 111, which is substantially in a cylindrical shape. The step 12 is arranged at a middle position of a hole wall of the through hole 111. The step 12 is arranged around the hole wall of the through hole 111. The step 12 is provided with an avoiding hole 121, which is in communication with the through hole 111 and is substantially in a strip shape. The step 12 has opposite first and second surfaces 122 and 123. The circuit board 20 comprises a first circuit board 21, a second circuit board 22 and a third circuit board 23. The first and second circuit boards 21 and 22 are arranged in the through hole 111 and located at opposite sides of the step 12. The first circuit board 21 is located at a side of the first surface 122 away from the second surface 123. The second circuit board 22 is located at a side of the second surface 123 away from the first surface 122. The third circuit board 23 is arranged in the avoiding hole 121 and has two ends connected to the first and second circuit boards 21 and 22 respectively, so that the first, second and third circuit boards 21, 22 and 23 are electrically connected. The light source 30 is arranged in the avoiding hole 121 and electrically connected to the second circuit board 22 at a side of the second circuit board 22 close to the first circuit board 21. The fingerprint identification chip 40 is arranged in the through hole 111 and electrically connected to the second circuit board 22 at a side of the second circuit board 22 away from the step 12. The light guide 10 is used to guide light emitted by the light source 30 out and indicate the position of the fingerprint identification chip 40.

[0038] In the embodiment, the light guide 10 is in an axial symmetry structure. The first, second and third circuit boards 21, 22 and 23 can be printed circuit boards (PCB), flexible printed circuit boards (FPC) or soft and hard combined circuit boards. The light source 30 can be a top emitting light emitting diode (LED) or a side emitting LED. The fingerprint identification chip 40 can be any one of a capacitive fingerprint identification chip, an ultrasonic fingerprint identification chip and an optical fingerprint identification chip.

[0039] In the scheme provided by the embodiment of the application, when the light source 30 emits light, the light guide member 10 guides the light emitted by the light source 30 out and indicates the position of the fingerprint recognition chip 40 (i.e. the fingerprint collection area of the fingerprint recognition chip 40), so that the user can quickly find the position of the fingerprint recognition chip 40 and perform fingerprint recognition. For example, the light guide member 10 is in a breathing light (alternating bright and dark) in a standby state; the light guide member 10 is in a bright light indicating mode (eye-catching) in a starting state, which improves the efficiency of fingerprint recognition. Meanwhile, the fingerprint recognition chip 40, the circuit board 20 and the light source 30 are integrated in the light guide member 10, which can reduce the volume of the fingerprint recognition module 100 and is conducive to the miniaturization of the fingerprint recognition module 100.

[0040] In a possible implementation, the light guide member 10 further comprises a light shielding ink layer 13, which is arranged on the outer peripheral wall of the light guide body 11 to avoid light from being emitted out of the outer peripheral wall of the light guide body 11. In the embodiment, the light shielding ink layer 13 is a black appearance ink layer, and the thickness of the light shielding ink layer 13 ranges from 10 μm to 20 μm.

[0041] In the scheme provided by the embodiment of the application, when the light source 30 emits light, the light shielding ink layer 13 of the outer peripheral wall of the light guide body 11 can avoid light from being emitted out of the outer peripheral wall of the light guide body 11, and the light guide body 11 guides the light emitted by the light source 30 out of the end of the light guide body 11 close to the fingerprint recognition chip 40 and indicates the position of the fingerprint recognition chip 40, so that the user can quickly find the position of the fingerprint recognition chip 40 and perform fingerprint recognition, which improves the efficiency of fingerprint recognition.

[0042] In a possible implementation, the light guide member 10 further comprises a light guide ink layer 14, which is arranged on the hole wall of the through hole 111 close to the second surface 123, the second surface 123 and the hole wall of the avoiding hole 121 to uniformly diffuse light to the light guide body 11 and indicate the position of the fingerprint recognition chip 40. In the embodiment, the light guide ink layer 14 is a white ink layer or a bright silver ink layer, and the thickness of the light guide ink layer 14 ranges from 10 μm to 20 μm.

[0043] In the scheme provided by the embodiment of the application, when the light source 30 emits light, the light guide ink layer 14 can uniformly diffuse light to the light guide body 11 and indicate the position of the fingerprint recognition chip 40, prevent local area from being bright, and play a role of light uniformity, so that the user can quickly find the position of the fingerprint recognition chip 40 and perform fingerprint recognition, which improves the efficiency of fingerprint recognition.

[0044] Please see Figure 4In a possible implementation, the light guide 10 further comprises at least one positioning protrusion 15, the positioning protrusion 15 is arranged on the first surface 122, the first circuit board 21 is provided with a positioning hole 211 corresponding to the position of the positioning protrusion 15, and the positioning protrusion 15 extends into the corresponding positioning hole 211. In this embodiment, the number of the positioning protrusions 15 is two, and the number of the positioning holes 211 is also two.

[0045] In the scheme provided by the embodiment of the application, the positioning protrusion 15 and the positioning hole 211 are arranged, so that the light guide 10 and the first circuit board 21 can be positioned, and the positions of the light guide 10 and the first circuit board 21 are fixed.

[0046] In a possible implementation, the fingerprint identification module 100 further comprises an adhesive 50, the adhesive 50 is arranged between the first circuit board 21 and the first surface 122. In this embodiment, the adhesive 50 is double-sided adhesive tape.

[0047] In the scheme provided by the embodiment of the application, the adhesive 50 is arranged, so that the first circuit board 21 can be adhered to the first surface 122 of the step 12, and the fixed first circuit board 21 after positioning can be achieved.

[0048] In a possible implementation, the fingerprint identification module 100 further comprises a button 60, the button 60 is arranged on the side of the first circuit board 21 away from the step 12 and is electrically connected with the first circuit board 21, and the button 60 is arranged opposite to the fingerprint identification chip 40.

[0049] In the scheme provided by the embodiment of the application, the button 60 is arranged opposite to the fingerprint identification chip 40, and the button 60 is arranged corresponding to the avoiding hole 121, so that the button 60 can perform corresponding operation when the fingerprint identification chip 40 is pressed.

[0050] In a possible implementation, the light guide body 11 is provided with a fitting groove 112 in communication with the through hole 111 at the end close to the first surface 122, the fitting groove 112 is a rectangular groove, the fingerprint identification module 100 further comprises a light-reflecting piece 70, the light-reflecting piece 70 is attached to the groove bottom of the fitting groove 112, the light-reflecting piece 70 is provided with a receiving hole 71, the receiving hole 71 is rectangular, and the button 60 is located in the receiving hole 71. In this embodiment, the light-reflecting piece 70 is a ring-shaped light-reflecting film.

[0051] In the scheme provided by the embodiment of the application, the light-reflecting piece 70 is arranged, so that the light rays entering the avoiding hole 121 can be reflected, the reflected light rays can be guided out from the end of the light guide body 11 close to the fingerprint identification chip 40 and indicate the position of the fingerprint identification chip 40, the light intensity of the light rays emitted from the end of the light guide body 11 close to the fingerprint identification chip 40 is high, so that the user can quickly find the position of the fingerprint identification chip 40 and perform fingerprint identification, and the efficiency of the fingerprint identification is improved.

[0052] In a possible implementation, the light guide body 11 is provided with a connecting hole 113 at one end close to the first surface 122, the connecting hole 113 is substantially rectangular, one end of the first circuit board 21 extends out of the connecting hole 113, the fingerprint identification module 100 further includes a peripheral device 80 and a connector 90, the peripheral device 80 is arranged at one end of the first circuit board 21 extending out of the connecting hole 113 and is electrically connected with the first circuit board 21; the connector 90 is arranged at one end of the first circuit board 21 extending out of the connecting hole 113 and is located at one side of the peripheral device 80, and the connector 90 is electrically connected with the first circuit board 21.

[0053] In the scheme provided by the embodiment of the application, the peripheral device 80 and the connector 90 are arranged, so that the fingerprint identification module 100 can be connected with the outside world, thereby realizing the identification function of the fingerprint identification module 100.

[0054] Please refer to Figure 5 In a possible implementation, the third circuit board 23 is provided with a plurality of hollow areas 231, the light source 30 includes a plurality of sub-light sources 31, and the plurality of sub-light sources 31 correspond to the plurality of hollow areas 231 respectively. In the embodiment, the sub-light sources 31 are three, and correspondingly, the hollow areas 231 are also three. In the embodiment, when the second circuit board 22 is in a strip shape, the three sub-light sources 31 are uniformly arranged on the second circuit board 22, and the second circuit board 22 is divided into four equal areas X; when the second circuit board 22 is in a circular or square shape, the light source 30 is arranged in the middle area of the second circuit board 22.

[0055] In the scheme provided by the embodiment of the application, the plurality of sub-light sources 31 correspond to the plurality of hollow areas 231 on the third circuit board 23 respectively, so that the third circuit board 23 does not shield the light emitted by the sub-light sources 31, the light intensity of the light emitted by the light guide body 11 at one end close to the fingerprint identification chip 40 is high, so that the user can quickly find the position of the fingerprint identification chip 40 and perform fingerprint identification, and the efficiency of fingerprint identification is improved.

[0056] Please refer to Figure 6 The second aspect of the embodiment of the application further provides an electronic device 1000, which includes a main body 200 and the fingerprint identification module 100 as above, and the fingerprint identification module 100 is arranged on the main body 200. The electronic device 1000 can be a notebook computer, a game machine or a smart home, and in the embodiment, the electronic device 1000 is a door lock.

[0057] In the scheme provided by the embodiment of the application, the light guide 10 and the light source 30 and the fingerprint recognition chip 40 are arranged, when the light source 30 emits light, the light guide 10 guides the light emitted by the light source 30 and indicates the position of the fingerprint recognition chip 40, so that the user can quickly find the position of the fingerprint recognition chip 40 and perform fingerprint recognition, and the efficiency of the fingerprint recognition is improved; meanwhile, the fingerprint recognition chip 40, the circuit board 20 and the light source 30 are integrated in the light guide 10, the volume of the fingerprint recognition module 100 can be reduced, and the miniaturization of the fingerprint recognition module 100 is facilitated.

[0058] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved. In addition, it is clear that the word "comprise" does not exclude other units or steps, and the singular does not exclude the plural.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than limit the present application, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A fingerprint recognition module, characterized in that, include: A light guide includes a light guide body and a step. The light guide body has a through hole, the step protrudes from the wall of the through hole, and the step has a clearance hole communicating with the through hole. The step has a first surface and a second surface that are opposite to each other. The circuit board includes a first circuit board, a second circuit board, and a third circuit board. The first circuit board and the second circuit board are disposed in the through hole and located on opposite sides of the step. The first circuit board is located on the side of the first surface away from the second circuit board, and the second circuit board is located on the side of the second surface away from the first surface. The third circuit board is disposed in the clearance hole, and both ends of the third circuit board are respectively connected to the first circuit board and the second circuit board, so that the first circuit board, the second circuit board, and the third circuit board are electrically connected to each other. A light source is located inside the clearance hole. The light source is disposed on the side of the second circuit board close to the first circuit board and is electrically connected to the second circuit board. A fingerprint recognition chip is located inside the through hole. The fingerprint recognition chip is disposed on the side of the second circuit board away from the step and is electrically connected to the second circuit board. The light guide is used to direct the light emitted by the light source and indicate the position of the fingerprint recognition chip.

2. The fingerprint recognition module as described in claim 1, characterized in that, The light guide component also includes: A light-shielding ink layer is disposed on the outer peripheral wall of the light guide to prevent light from escaping from the outer peripheral wall of the light guide.

3. The fingerprint recognition module as described in claim 2, characterized in that, The light guide component also includes: A light-guiding ink layer is disposed on the hole wall near the second surface, the second surface, and the hole wall of the avoidance hole to uniformly diffuse light to the light guide and indicate the position of the fingerprint recognition chip.

4. The fingerprint recognition module as described in claim 1, characterized in that, The light guide component also includes: At least one positioning protrusion is provided on the first surface, and the first circuit board has a positioning hole corresponding to the position of the positioning protrusion, with the positioning protrusion extending into the corresponding positioning hole.

5. The fingerprint recognition module as described in claim 1, characterized in that, The fingerprint recognition module also includes: An adhesive component is disposed between the first circuit board and the first surface.

6. The fingerprint recognition module as described in claim 1, characterized in that, The fingerprint recognition module also includes: A button is located on the side of the first circuit board away from the step and is electrically connected to the first circuit board, and is positioned opposite to the fingerprint recognition chip.

7. The fingerprint recognition module as described in claim 6, characterized in that, The light guide has a fitting groove at one end near the first surface that communicates with the through hole, and the fingerprint recognition module further includes: A reflective element is attached to the bottom of the bonding groove, and a receiving hole is provided on the reflective element, with the button located inside the receiving hole.

8. The fingerprint recognition module as described in claim 7, characterized in that, The light guide has a connection hole at one end near the first surface that communicates with the fitting groove, and one end of the first circuit board extends out of the connection hole. The fingerprint recognition module also includes: The peripheral device is located at one end of the first circuit board that extends out of the connection hole and is electrically connected to the first circuit board. A connector is disposed at one end of the first circuit board that extends out of the connection hole and is located on one side of the peripheral device, and the connector is electrically connected to the first circuit board.

9. The fingerprint recognition module as described in claim 1, characterized in that, The third circuit board has multiple cutout areas, and the light source includes multiple sub-light sources, each of which corresponds to a different cutout area.

10. An electronic device, characterized in that, It includes a main body and a fingerprint recognition module as described in any one of claims 1-9, wherein the fingerprint recognition module is disposed on the main body.

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