Fingerprint identification module

Abstract

The fingerprint identification module provided by the present disclosure comprises a fingerprint identification panel having a fingerprint identification area; a middle shell comprising a partition plate and a middle frame, wherein the partition plate is located on the opposite side of the fingerprint identification side of the fingerprint identification panel, the partition plate is detachably connected with the middle frame, the middle frame comprises a containing space, the containing space is provided with the partition plate and the fingerprint identification panel; a main board located in the containing space, the main board is located on the side of the partition plate away from the fingerprint identification panel, and the main board is electrically connected with the fingerprint identification panel.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of fingerprint identification, in particular to a fingerprint identification module. BACKGROUND

[0002] Fingerprint identification is a biometric identification technology that identifies different fingerprints by comparing the detail feature points of the fingerprints, and can be used for identity authentication. The technology has the advantages of fast identification speed, convenient collection and low price, and is widely used in identity authentication fields such as security, bank payment, public security, mobile phones and computers. SUMMARY

[0003] The fingerprint identification module provided by the present disclosure has the following specific solutions:

[0004] The fingerprint identification module provided by the present disclosure has the following specific solutions:

[0005] The fingerprint identification panel includes a fingerprint identification area.

[0006] The middle shell includes a partition plate and a middle frame, wherein the partition plate is located on the opposite side of the fingerprint identification side of the fingerprint identification panel, the partition plate is detachably connected with the middle frame, the middle frame includes a containing space, and the containing space is provided with the partition plate and the fingerprint identification panel.

[0007] The mainboard is located in the containing space, and the mainboard is located on the side of the partition plate away from the fingerprint identification panel, and the mainboard is electrically connected with the fingerprint identification panel.

[0008] In some embodiments, the fingerprint identification module provided by the present disclosure further includes a first connecting piece, the partition plate includes a first through hole, the mainboard includes a second through hole, the fingerprint identification panel includes a first connecting column, the first connecting column is located on the side of the fingerprint identification panel facing the partition plate, and the first connecting column includes a first blind hole, the first connecting column passes through the first through hole, and the first connecting piece is embedded in the first blind hole through the second through hole.

[0009] In some embodiments, the fingerprint identification panel further includes a frame area surrounding the fingerprint identification area, and the first connecting column is a plurality of first connecting columns, and each first connecting column is dispersedly arranged in the frame area.

[0010] In some embodiments, in the fingerprint recognition module provided in this disclosure, the middle frame includes multiple sidewalls and multiple flanges. The sidewalls are disposed on the side of the partition facing the fingerprint recognition panel and are disposed around the periphery of the partition, extending in a direction perpendicular to the surface of the partition. The number of sidewalls matches the number of edges of the partition. Each sidewall is sequentially connected end to end in a direction parallel to the surface of the partition to form the accommodating space. Each flange is detachably connected to the partition, and each flange extends from the end face of the sidewall adjacent to the fingerprint recognition panel toward the accommodating space. The orthographic projection of each flange on the fingerprint recognition panel does not overlap with the fingerprint recognition area.

[0011] In some embodiments, in the fingerprint recognition module provided in the present disclosure, the edge of the partition includes a first groove, which is recessed in a direction away from the edge of the partition in a direction parallel to the surface of the partition; the flange includes a second groove, which is recessed in a direction parallel to the surface of the partition towards the sidewall; in the stacking direction of the partition and the flange, the first groove and the second groove are disposed through each other, and the fingerprint recognition panel is electrically connected to the motherboard through the first groove and the second groove disposed through each other.

[0012] In some embodiments, in the fingerprint recognition module provided in the present disclosure, the fingerprint recognition panel includes a backlight module, a fingerprint recognition substrate, and a driving circuit, wherein the driving circuit connects the backlight module and the motherboard, and the fingerprint recognition substrate and the motherboard through the first groove and the second groove that are disposed through the partition; in a direction parallel to the surface of the partition, the backlight module is located between the fingerprint recognition substrate and the partition.

[0013] In some embodiments, the fingerprint recognition module provided in this disclosure further includes a second connector, the flange includes a second blind hole located at two edges in the flange extension direction, the partition includes a third through hole opposite to the second blind hole, and the second connector is embedded in the second blind hole through the third through hole.

[0014] In some embodiments, in the fingerprint recognition module provided in the present disclosure, the motherboard further includes: a USB interface, a switch, and a power socket disposed on the same side, wherein the switch and the power socket are disposed adjacent to each other.

[0015] In some embodiments, in the fingerprint recognition module provided in the present disclosure, a first opening and a second opening are provided on the side wall adjacent to the USB interface, the switch and the power socket, wherein the first opening exposes the USB interface and the second opening exposes the switch and the power socket.

[0016] In some embodiments, the fingerprint recognition module provided in this disclosure further includes a front cover, which is located on the side of the middle frame adjacent to the fingerprint recognition panel. The front cover is fixedly connected to the middle frame, and the front cover includes a third opening. The orthographic projection of the third opening on the fingerprint recognition panel approximately coincides with the fingerprint recognition area.

[0017] In some embodiments, the fingerprint recognition module provided in this disclosure further includes a third connector, the flange adjacent to the first flexible circuit board includes a fourth through hole, the fourth through hole is located at two edges in the extension direction of the flange, the front cover includes a second connecting post, the second connecting post is located on the side of the front cover facing the flange, and the second connecting post includes a third blind hole, the second connecting post is embedded in the fourth through hole, and the third connector is embedded in the third blind hole.

[0018] In some embodiments, the fingerprint recognition module provided in this disclosure further includes an ambient light sensing element, which is disposed on the side of the flange away from the partition.

[0019] The front cover also includes a fourth opening, the orthographic projection of which is located within the orthographic projection of the flange on the fingerprint recognition panel, and the fourth opening exposes the ambient light sensing element.

[0020] In some embodiments, the fingerprint recognition module provided in this disclosure further includes an ambient light protection film, which blocks the fourth opening, and the ambient light protection film includes a transparent area located at the fourth opening.

[0021] In some embodiments, in the fingerprint recognition module provided in this disclosure, the ambient light protection film further includes a light-shielding area that surrounds the transparent area.

[0022] In some embodiments, the fingerprint recognition module provided in this disclosure further includes a rear cover, which is located on the side of the middle frame adjacent to the motherboard, and the rear cover is fixedly connected to the middle frame.

[0023] In some embodiments, in the fingerprint recognition module provided in the present disclosure, the middle frame further includes a plurality of protrusions, the protrusions extending from the sidewall toward the accommodating space, the protrusions being disposed near the corner of the accommodating space, the orthographic projection of the protrusions on the fingerprint recognition panel not overlapping with the fingerprint recognition area, and the protrusions being fixedly connected to the back shell.

[0024] In some embodiments, the fingerprint recognition module provided in this disclosure further includes a fourth connector, the protrusion includes a fourth blind hole, the back cover includes a fifth through hole, and the fourth connector is embedded in the fourth blind hole through the fifth through hole.

[0025] On the other hand, this disclosure also provides an assembly method for the above-mentioned fingerprint recognition module, including:

[0026] A fingerprint recognition panel, a mid-shell, and a motherboard are provided, wherein the mid-shell includes a partition with a separate design and a mid-frame, and the mid-frame includes an accommodating space;

[0027] The fingerprint recognition panel and the motherboard are stacked on opposite sides of the partition, and the fingerprint recognition panel and the motherboard are fixedly connected, so that the fingerprint recognition panel and the main body can move relative to the partition.

[0028] The partition, the fingerprint recognition panel, and the motherboard are placed within the accommodating space, and the partition is fixed to the middle frame.

[0029] In some embodiments, in the assembly method provided in this disclosure, the fingerprint recognition panel and the motherboard are stacked on opposite sides of the partition, and the fingerprint recognition panel and the motherboard are fixedly connected, allowing the fingerprint recognition panel and the main body to move relative to the partition. Specifically, this includes:

[0030] The first connecting post of the fingerprint recognition panel passes through the first through hole of the partition;

[0031] The first connector passes through the second through hole of the motherboard and is then embedded in the first blind hole of the first connecting post, thereby achieving a fixed connection between the fingerprint recognition panel and the motherboard, and the fingerprint recognition panel and the main body can move relative to the partition.

[0032] In some embodiments, in the assembly method provided in this disclosure, the middle frame includes a plurality of sidewalls and a plurality of flanges, the sidewalls being sequentially connected end-to-end to form the accommodating space, and each flange extending from the end face of the sidewall adjacent to the fingerprint recognition panel toward the accommodating space. After fixing the partition to the middle frame, the method further includes:

[0033] Provide a front cover, and insert the second connecting post of the front cover into the fourth through hole of the flange;

[0034] The third connector is embedded in the third blind hole of the second connector post, so that the front cover and the flange are locked together, and the fingerprint recognition panel and the motherboard are fastened to the opposite side of the partition.

[0035] In some embodiments, in the assembly method provided in this disclosure, after embedding the third connector into the third blind hole of the second connecting post, thereby locking the front cover and the flange together, and simultaneously securing the fingerprint recognition panel and the motherboard to the opposite sides of the partition, the method further includes:

[0036] A rear shell is provided, and a fourth connector is inserted through a fifth through hole in the rear shell and into a fourth blind hole in a protrusion in the middle frame, so that the rear shell is fastened to the middle frame.

[0037] In some embodiments, in the fingerprint recognition module provided in the present disclosure, the fingerprint recognition panel further includes a border area surrounding the fingerprint recognition area. The border area includes a first border area and a second border area placed opposite each other, and a third border area and a fourth border area respectively connected to the first border area and the second border area.

[0038] The driving circuit includes a flip-chip thin film, a first flexible circuit board, and a second flexible circuit board, wherein...

[0039] The flip-chip film is located in the first frame area. The flip-chip film extends from the side of the fingerprint recognition substrate away from the backlight module and is folded towards the motherboard. The flip-chip film connects the fingerprint recognition substrate and the motherboard.

[0040] The first flexible circuit board is located in the third frame area and the fourth frame area. The first flexible circuit board is folded from the side of the fingerprint recognition substrate away from the backlight module toward the motherboard. The first flexible circuit board connects the fingerprint recognition substrate and the motherboard.

[0041] The second flexible circuit board is located in the second frame area. The second flexible circuit board is folded from the side of the backlight module toward the fingerprint recognition substrate toward the motherboard. The second flexible circuit board connects the backlight module and the fingerprint recognition substrate. Attached Figure Description

[0042] Figure 1 This is a front view of the fingerprint recognition module provided in an embodiment of the present disclosure;

[0043] Figure 2 An exploded perspective view of the fingerprint recognition module provided in the embodiments of this disclosure;

[0044] Figure 3 This is a schematic diagram of the structure of the partition provided in an embodiment of the present disclosure;

[0045] Figure 4 This is a schematic diagram of the structure of the middle frame provided in an embodiment of this disclosure;

[0046] Figure 5 This is a schematic diagram of the structure of a fingerprint recognition panel provided in an embodiment of this disclosure;

[0047] Figure 6 This is a schematic diagram of the assembly of the partition and the fingerprint recognition panel provided in an embodiment of this disclosure;

[0048] Figure 7 This is a schematic diagram of the structure of the motherboard provided in an embodiment of this disclosure;

[0049] Figure 8 This is a schematic diagram of the assembly of the partition, fingerprint recognition panel, and motherboard provided in an embodiment of this disclosure;

[0050] Figure 9 This is a schematic diagram of the rear of the assembled mid-frame and partition, fingerprint recognition panel, and motherboard provided in the embodiments of this disclosure;

[0051] Figure 10 This is a front view of the assembled mid-frame and partition, fingerprint recognition panel, and motherboard provided in the embodiments of this disclosure;

[0052] Figure 11 This is a schematic diagram of the structure of the front cover provided in an embodiment of the present disclosure;

[0053] Figure 12 This is a schematic diagram of the assembly of the front cover and the middle frame provided in an embodiment of this disclosure;

[0054] Figure 13 This is a schematic diagram of the structure of the area where the ambient light sensing element is located, as provided in an embodiment of this disclosure;

[0055] Figure 14 A physical image of the fingerprint recognition module provided in the embodiments of this disclosure;

[0056] Figure 15 This is a schematic diagram of the structure of the rear shell provided in an embodiment of this disclosure;

[0057] Figure 16 This is a schematic diagram of the back of the fingerprint recognition module provided in the embodiments of this disclosure;

[0058] Figure 17 A flowchart illustrating the assembly method of the fingerprint recognition module provided in this embodiment. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the dimensions and shapes of the figures in the drawings do not reflect actual proportions and are only intended to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout the drawings.

[0060] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure and the claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “inner,” “outer,” “upper,” and “lower” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0061] Currently, many payment or information input confirmations rely on fingerprint comparison. However, most current fingerprint recognition systems collect and compare single-fingerprint information, leading to varying degrees of false recognition and reducing the security of information verification. Multi-fingerprint recognition technology significantly improves the security of information comparison, making it particularly suitable for scenarios with extremely high identity verification security requirements. Compared to the single-finger fingerprint recognition area (typically 20mm*30mm), the increased area of ​​a multi-finger (taking four fingers as an example) fingerprint recognition area (typically 80mm*80mm) increases the size of the fingerprint recognition panel and motherboard, thus increasing the difficulty of assembling the fingerprint recognition panel and motherboard into the mid-frame. Furthermore, it makes disassembly more difficult and hinders repair.

[0062] To address the aforementioned technical problems in related technologies, this disclosure provides a fingerprint recognition module, such as... Figures 1 to 10 As shown, it includes:

[0063] Fingerprint recognition panel 001, including fingerprint recognition area AA;

[0064] The middle shell 002 includes a partition 201 and a middle frame 202, wherein the partition 201 is located on the opposite side of the fingerprint recognition side of the fingerprint recognition panel 001, and the middle frame 202 includes an accommodating space 2021, in which the partition 201 and the fingerprint recognition panel 001 are disposed.

[0065] The motherboard 003 is located within the accommodating space 2021. The motherboard 003 is located on the side of the partition 201 away from the fingerprint recognition panel 001. The motherboard 003 is electrically connected to the fingerprint recognition panel 001.

[0066] In the fingerprint recognition module provided in the embodiments of this disclosure, the middle shell 002 adopts a split design. Specifically, the middle shell 002 is split into a detachable partition 201 and a middle frame 202. This makes it easy to place the motherboard 003 and the fingerprint recognition panel 001 on opposite sides of the partition 201, and then fix the motherboard 003, the fingerprint recognition panel 001 and the partition 201 as a whole on the middle frame 202. This reduces the difficulty of assembly, improves the convenience and efficiency of overall assembly, and is easy to disassemble and maintain.

[0067] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 4 As shown, the middle frame 202 includes multiple sidewalls 2022 and multiple flanges 2023. Each sidewall 2022 is disposed on the side of the partition 201 facing the fingerprint recognition panel 001 and is disposed around the periphery of the partition 201, extending in a direction perpendicular to the surface of the partition 201. The number of sidewalls 2022 matches the number of edges of the partition 201. For example, if the partition 201 has four edges, then the number of sidewalls 2022 is 4. Each sidewall 2022 is connected end to end in a direction parallel to the surface of the partition 201 to form the aforementioned accommodating space 2021. Each flange 2023 is detachably connected to the partition 201, and each flange 2023 extends from the end face of the sidewall 2022 adjacent to the fingerprint recognition panel 001 toward the accommodating space 2021. The orthographic projection of each flange 2023 on the fingerprint recognition panel 001 does not overlap with the fingerprint recognition area AA.

[0068] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figures 5 to 8As shown, the fingerprint recognition panel 001 may include a backlight module 101, a fingerprint recognition substrate 102, and a driving circuit 103. The backlight module 101 is located between the fingerprint recognition substrate 102 and the partition 201. The driving circuit 103 is folded towards the motherboard 003 via the side of the fingerprint recognition panel 001 and the partition 201. The driving circuit 103 is connected to the backlight module 101 and the motherboard 003, and to the fingerprint recognition substrate 102 and the motherboard 003, respectively. Optionally, the backlight module 101 may be composed of multiple light-emitting elements (e.g., light-emitting diodes LED); the fingerprint recognition substrate 102 may include multiple photosensitive elements (e.g., photodiodes PIN); the driving circuit 103 may include a chip-on-film (COF) led out from the fingerprint recognition substrate 102, a first flexible circuit board (FPC1) led out from the fingerprint recognition substrate 102, and a second flexible circuit board (FPC2) led out from the backlight module 101. The COF, the first flexible circuit board (FPC1), and the second flexible circuit board (FPC2) need to be inserted into the corresponding sockets 301 on the motherboard 003 to achieve electrical connection between the backlight module 101, the fingerprint recognition substrate 102, and the motherboard 003, respectively.

[0069] Optionally, such as Figure 6 As shown, the fingerprint recognition panel 001 may further include a border area BB surrounding the fingerprint recognition area. The border area BB includes a first border area BB1 and a second border area BB2 that are opposite to each other, and a third border area BB3 and a fourth border area BB4 that are respectively connected to the first border area BB1 and the second border area BB2. The chip-on-film (COF) is located in the first border area BB1, and the COF is folded from the side of the fingerprint recognition substrate 102 away from the backlight module 101 toward the motherboard 003. The first flexible circuit board (FPC1) is located in the third border area BB3 and the fourth border area BB4, and the first flexible circuit board (FPC1) is folded from the side of the fingerprint recognition substrate 102 away from the backlight module 101 toward the motherboard 003. The second flexible circuit board (FPC2) is located in the second border area BB2, and the second flexible circuit board (FPC2) is folded from the side of the backlight module 101 toward the fingerprint recognition substrate 102 toward the motherboard 003.

[0070] In related technologies, fingerprint recognition panels 001 often employ prism optical technology, resulting in a large size and weight of the fingerprint recognition module, making it difficult to carry. However, the fingerprint recognition panel 001 in this disclosure has its own light-emitting element and photosensitive element, eliminating the need for other prism devices. Its simple structure effectively reduces the size and weight of the fingerprint recognition module, making it easy to carry.

[0071] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figures 3 to 9As shown, the edge of the partition 201 includes a first groove 2011. In a direction parallel to the surface of the partition 201, the first groove 2011 is recessed in a direction away from the edge of the partition 201, that is, recessed in the center area of ​​the partition 201. The flange 2023 includes a second groove 20231. In a direction parallel to the surface of the partition 201, the second groove 20231 is recessed in a direction towards the side wall 2022. In the stacking direction of the partition 201 and the flange 2023, the first groove 2011 and the second groove 20231 are connected through each other. The driving circuit 103 is electrically connected to the motherboard 003 through the first groove 2011 and the second groove 20231, which can make the internal structure of the fingerprint recognition module more compact and reduce the size of the frame and the volume of the fingerprint recognition module. Furthermore, the detachable arrangement of the partition 201 and the middle frame 202 facilitates the insertion and removal of the drive circuit 103. The first groove 2011 and the second groove 20231 can also protect the drive circuit 103 (e.g., COF, FPC1, and FPC2) from being squeezed by the motherboard 003 and the partition 201 during assembly. Optionally, the first groove 2011 and the second groove 20231 can be elongated. In the extending direction of the first groove 2011 and the second groove 20231, the length of the first groove 2011 and the length of the second groove 20231 are slightly longer than the width of the corresponding drive circuit 103 (e.g., COF, FPC1, and FPC2). In the vertical direction of the extending direction of the first groove 2011 and the second groove 20231, the width of the first groove 2011 and the width of the second groove 20231 can be 2mm to 5mm, for example, 2mm, 3mm, 4mm, 5mm, etc.

[0072] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 3 , Figures 5 to 8As shown, it may also include a first connector 004; the partition 201 includes a first through hole 2012, the motherboard 003 includes a second through hole 302, and the fingerprint recognition panel 001 includes a first connecting post 104. The first connecting post 104 is located on the side of the fingerprint recognition panel 001 facing the partition 201, and the first connecting post 104 includes a first blind hole 1041. The first connecting post 104 passes through the first through hole 2012, and the first connector 004 is embedded in the first blind hole 1041 through the second through hole 302. In a specific implementation, the first connector 004 can be screwed into the first blind hole 1041 through the second through hole 302 on the motherboard 003, so that the fingerprint recognition panel 001 and the motherboard 003 are fixed together. At this time, relative displacement can still occur between the first connecting post 104 and the first through hole 2012 on the partition 201 (that is, the whole consisting of the fingerprint recognition panel 001 and the motherboard 003 can move up and down between the partition 201). At the same time, it can prevent in-plane displacement between the fingerprint recognition panel 001 and the partition 201, and also ensure that there is no relative displacement between the motherboard 003 and the fingerprint recognition panel 001. Optionally, the first connecting member 004 can be a bolt, screw or other fixing component, which is not limited here.

[0073] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 3 , Figures 5 to 8 As shown, there can be multiple first connecting posts 104, each distributed in the frame area BB (e.g., in various corners of the fingerprint recognition panel 001) to achieve good support and fixation for the motherboard 003. Each first connecting post 104 needs to avoid components such as the chip-on-film (COF), the first flexible circuit board (FPC1), and the second flexible circuit board (FPC2), ensuring that each first connecting post 104 is independently configured from these components. Of course, in specific implementations, the position of the first connecting posts 104 can be flexibly set according to actual needs. Provided that the first connecting posts 104 avoid components on the motherboard 003, the position and spacing of the first connecting posts 104 are not strictly required. Furthermore, it should be understood that after the first connecting post 104 passes through the first through hole 2012, it will protrude relative to the plane of the partition 201 to prevent the motherboard 003 from directly contacting the partition 201 and damaging the motherboard 003. In other words, in order to ensure that the motherboard 003 is not damaged, the height of the first connecting post 104 needs to be sufficient to ensure that the motherboard 003 and its components do not contact the partition 201 after assembly.

[0074] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 3 , Figure 4 and Figure 9As shown, the device may also include a second connector 005. At least a portion of the flange 2023 (e.g., adjacent to the CFO film and the second flexible circuit board FPC2) includes a second blind hole 20232. The second blind hole 20232 is located at two edges (also referred to as the two ends) in the extending direction of the flange 2023. The partition 201 includes a third through hole 2013 directly opposite the second blind hole 20232. The second connector 005 is embedded in the second blind hole 20232 through the third through hole 2013, thus fixing the partition 201 to the flange 2023 of the middle frame 202 via the second connector 005. Furthermore, since the flange 2023 is a blind hole, the appearance of the second connector 005 on the front of the fingerprint recognition module (i.e., the side used for fingerprint recognition) is avoided, thus preventing it from affecting the aesthetics. This also makes the fingerprint recognition module pressure-resistant and ensures the security of its use. Optionally, the second connector 005 may be a bolt, screw, or other fixing component, which is not limited here.

[0075] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 7 As shown, the motherboard 003 may further include: a USB interface 303, a switch 304, and a power socket 305 disposed on the same side (e.g., on the side adjacent to the COF film), wherein the switch 304 and the power socket 305 are disposed adjacent to each other. Of course, in some embodiments, the motherboard 003 may also include other interfaces known to those skilled in the art, and the relative positions of the USB interface 303, the switch 304, and the power socket 305 are not specifically limited.

[0076] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 4 , Figures 7 to 10 As shown, a first opening 20221 and a second opening 20222 are provided on the side wall 2022 adjacent to the USB interface 303, the switch 304 and the power socket 305. The first opening 20221 exposes the USB interface 303, and the second opening 20222 exposes the switch 304 and the power socket 305. This eliminates the need for a button function area on the front of the fingerprint recognition module (i.e., the side used for fingerprint recognition), reducing the bezel size and the overall front area of ​​the fingerprint recognition module.

[0077] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 2 , Figure 11 and Figure 12As shown, it may also include a front cover 006, which is located on the side of the middle frame 202 adjacent to the fingerprint recognition panel 001. The front cover 006 is fixedly connected to the middle frame 202. In order to allow the finger to directly contact the fingerprint recognition panel 001 and improve the sensitivity of fingerprint recognition, a third opening 601 may be provided on the front cover 006, and the orthographic projection of the third opening 601 on the fingerprint recognition panel 001 shall approximately coincide with the fingerprint recognition area AA. It should be noted that in the embodiments provided in this disclosure, due to the limitations of process conditions or the influence of other factors such as measurement, "approximately coincident" may be exactly coincident, or there may be some deviation (e.g., a deviation of ±2μm). Therefore, as long as the "approximately coincident" relationship between related features meets the allowable error, it is within the protection scope of this disclosure.

[0078] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 4 , Figure 9 , Figure 11 and Figure 12 As shown, it may also include a third connector 007. At least a portion of the flange 2023 (e.g., the flange 2023 adjacent to the first flexible circuit board FPC1) includes a fourth through hole 20233. The fourth through hole 20233 is located at two edges (also referred to as the two ends) in the extending direction of the flange 2023. The front cover 006 includes a second connecting post 602. The second connecting post 602 is located on the side of the front cover 006 facing the flange 2023, and the second connecting post 602 includes a third blind hole 6021. The second connecting post 602 is embedded in the fourth through hole 20233, and the third connector 007 is embedded in the third blind hole 6021. In a specific implementation, the second connecting post 602 can be placed in the fourth through hole 20233, and the third connector 007 can be screwed into the third blind hole 6021. During the process of screwing the third connector 007 into the third blind hole 6021, the front cover 006 gradually moves closer to the middle frame 202 and presses the fingerprint recognition panel 001 onto the partition 201. After this assembly step, the fingerprint recognition panel 001, motherboard 003, and partition 201 will no longer slide against each other. It should be understood that, in order for the front cover 006 to press the fingerprint recognition panel 001 firmly onto the partition 201, as... Figure 12 As shown, after this step of assembly, the end face of the second connecting post 602 should be lower than the end face of the fourth through hole 20233, that is, the third connecting piece 007 cannot penetrate the fourth through hole 20233.

[0079] Furthermore, by using the third connector 007 to fix the front cover 006 to the mid-frame 202, the assembly of the front cover 006, fingerprint recognition panel 001, and motherboard 003 is also fixed, thus avoiding the appearance of the third connector 007 on the front of the fingerprint recognition module (i.e., the side used for fingerprint recognition) and its impact on aesthetics. Figure 1As shown. Furthermore, due to the pre-tightening force between the fingerprint recognition panel 001 and the partition 201, the fingerprint recognition module is more pressure-resistant and less prone to damage during use. Optionally, the third connector 007 can be a bolt, screw, or other fixing component; this is not limited to this.

[0080] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 11 and Figure 13 As shown, it may also include an ambient light sensing element 008, which is disposed on the side of the flange 2023 away from the partition 201; the front cover 006 may also include a fourth opening 603, the orthographic projection of the fourth opening 603 on the fingerprint recognition panel 001 is located within the orthographic projection of the flange 2023 on the fingerprint recognition panel 001, so as to avoid the fingerprint recognition area AA, and the fourth opening 603 exposes the ambient light sensing element 008, so as to avoid the front cover 006 from blocking the ambient light sensing element 008, which is conducive to the ambient light sensing element 008 effectively sensing the light intensity of the surrounding environment during the fingerprint recognition process, thereby improving the fingerprint recognition performance.

[0081] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 11 , Figure 13 and Figure 14 As shown, it may also include an ambient light protection film 009, which blocks the fourth opening 603. The ambient light protection film 009 includes a transparent area 901 located at the fourth opening 603. This allows the ambient light protection film 009 to block external dust and other objects from entering, while the transparent area 901 of the ambient light protection film 009 ensures that ambient light can smoothly illuminate the ambient light sensing element 008 at the fourth opening 603.

[0082] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 13 and Figure 14 As shown, the ambient light protective film 009 may further include a light-shielding area 902, which surrounds the transparent area 901. The light-shielding area 902 absorbs ambient light around the transparent area 901, preventing ambient light around the transparent area 901 from being reflected on the front cover 006 and then shining onto the transparent area 901, thus interfering with the ambient light sensing element 008's sensing of ambient light intensity. Optionally, the light-shielding area 902 may be formed by a black screen printing process, such as screen printing with black ink.

[0083] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 2 , Figure 15 and Figure 16As shown, it may also include a rear cover 010, which is located on the side of the middle frame 202 adjacent to the motherboard 003. The rear cover 010 is fixedly connected to the middle frame 202, so that the rear cover 010 and the middle frame 202 form a box, and the motherboard 003 can be protected through the rear cover 010.

[0084] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 4 , Figure 15 and Figure 16 As shown, in order to facilitate the fixed connection between the back cover 010 and the middle frame 202, the middle frame 202 may also include multiple protrusions 2024. The protrusions 2024 extend from the side wall 2022 toward the accommodating space 2021. The protrusions 2024 are located near the corner of the accommodating space 2021. The orthographic projection of the protrusions 2024 on the fingerprint recognition panel 001 does not overlap with the fingerprint recognition area AA. The protrusions 2024 are fixedly connected to the back cover 010.

[0085] In some embodiments, in the fingerprint recognition module provided in the present disclosure, such as Figure 4 , Figure 15 and Figure 16 As shown, it may also include a fourth connector 011, a protrusion 2024 including a fourth blind hole 20241, and a rear shell 010 including a fifth through hole 1001. The fourth connector 011 is embedded in the fourth blind hole 20241 through the fifth through hole 1001. In a specific implementation, the fourth connector 011 passes through the fifth through hole 1001 and is screwed into the fourth blind hole 20241 to achieve a fixed connection between the rear shell 010 and the middle frame 202. Optionally, the fourth connector 011 may be a bolt, screw, or other fixing component, which is not limited here.

[0086] As can be seen from the above, the fingerprint recognition module provided in this disclosure has a small, box-like structure with a large fingerprint recognition area, a compact internal structure, and a small overall size, making it easy to carry. Furthermore, it is simple and quick to assemble, facilitating disassembly and maintenance. It can achieve multi-fingerprint enrollment and recognition, reducing the false recognition rate and improving the security of fingerprint recognition.

[0087] Based on the same inventive concept, this disclosure also provides an assembly method for the above-mentioned fingerprint recognition module. Since the principle of this assembly method in solving the problem is similar to that of the above-mentioned fingerprint recognition module, the implementation of this assembly method can refer to the embodiments of the above-mentioned fingerprint recognition module, and the repeated parts will not be described again.

[0088] Specifically, this disclosure provides an assembly method for the above-mentioned fingerprint recognition module, such as... Figure 17 As shown, the following steps may be included:

[0089] S1701 provides a fingerprint recognition panel, a mid-shell, and a motherboard. The mid-shell includes a separate partition and a mid-frame, and the mid-frame includes accommodating space.

[0090] S1702. The fingerprint recognition panel and the motherboard are stacked on opposite sides of the partition, and the fingerprint recognition panel and the motherboard are fixedly connected so that the fingerprint recognition panel and the main body can move relative to the partition.

[0091] S1703. Place the partition, fingerprint recognition panel and motherboard in the accommodating space, and fix the partition to the middle frame. At this time, the partition and middle frame assembly can still slide up and down with the fingerprint module and motherboard assembly.

[0092] In some embodiments, in the assembly method provided in this disclosure, step S1702, which involves stacking the fingerprint recognition panel and the motherboard on opposite sides of the partition and fixing the fingerprint recognition panel to the motherboard so that the fingerprint recognition panel and the main body can move relative to the partition, can be implemented in the following ways:

[0093] The first connecting post of the fingerprint recognition panel passes through the first through hole of the partition;

[0094] The first connector passes through the second through hole of the motherboard and is then embedded in the first blind hole of the first connecting post, thereby achieving a fixed connection between the fingerprint recognition panel and the motherboard, and the fingerprint recognition panel and the main body can move relative to the partition.

[0095] In some embodiments, in the assembly method provided in this disclosure, the middle frame includes multiple sidewalls and multiple flanges. The sidewalls are connected end to end to form an accommodating space, and each flange extends from the end face of the sidewall adjacent to the fingerprint recognition panel toward the accommodating space. After fixing the partition to the middle frame (specifically the flange) in step S1703, the following steps can also be performed:

[0096] Provide a front cover, and insert the second connecting post of the front cover into the fourth through hole of the flange;

[0097] The third connector is embedded in the third blind hole of the second connector, so that the front cover and the flange are locked together, and the fingerprint recognition panel and the motherboard are fastened to the opposite side of the partition. At this time, the partition, the middle frame assembly and the fingerprint module and the motherboard assembly are locked together.

[0098] In some embodiments, in the assembly method provided in this disclosure, after performing the step of embedding the third connector into the third blind hole of the second connecting post, thereby locking the front cover and the flange while simultaneously securing the fingerprint recognition panel and the motherboard to the opposite side of the partition, the following steps may also be performed:

[0099] A rear shell is provided, and a fourth connector is inserted through a fifth through hole in the rear shell and into a fourth blind hole in a raised section of the middle frame, so that the rear shell is securely fastened to the middle frame.

[0100] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this disclosure without departing from the spirit and scope of the embodiments of this disclosure. Therefore, if these modifications and variations to the embodiments of this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include these modifications and variations.

Claims

1. A fingerprint recognition module, wherein, include: A fingerprint recognition panel includes a fingerprint recognition area, a backlight module, a fingerprint recognition substrate, and a driving circuit, wherein the backlight module is composed of multiple light-emitting elements, and the fingerprint recognition substrate includes multiple photosensitive elements. The middle shell includes a partition and a middle frame. The partition is located on the opposite side of the fingerprint recognition panel. The partition is detachably connected to the middle frame. The middle frame includes an accommodating space in which the partition and the fingerprint recognition panel are disposed. The middle frame includes multiple sidewalls and multiple flanges. The edge of the partition includes a first groove, which is recessed in a direction away from the edge of the partition in a direction parallel to the surface of the partition. The flange includes a second groove, which is recessed in a direction parallel to the surface of the partition towards the sidewall. In the stacking direction of the partition and the flange, the first groove and the second groove are through-hole disposed. The fingerprint recognition panel is electrically connected to the motherboard through the through-hole first groove and the second groove. The motherboard is located within the accommodating space, on the side of the partition away from the fingerprint recognition panel, and is electrically connected to the fingerprint recognition panel.

2. The fingerprint recognition module as described in claim 1, wherein, It also includes a first connector; the partition includes a first through hole, the motherboard includes a second through hole, the fingerprint recognition panel includes a first connecting post, the first connecting post is located on the side of the fingerprint recognition panel facing the partition, and the first connecting post includes a first blind hole, the first connecting post passes through the first through hole, and the first connector is embedded in the first blind hole through the second through hole.

3. The fingerprint recognition module as described in claim 2, wherein, The fingerprint recognition panel also includes a border area surrounding the fingerprint recognition area, and there are multiple first connecting posts, each of which is distributed in the border area.

4. The fingerprint recognition module as described in any one of claims 1 to 3, wherein, The sidewalls are disposed on the side of the partition facing the fingerprint recognition panel and are located around the perimeter of the partition, extending in a direction perpendicular to the surface of the partition. The number of sidewalls matches the number of edges of the partition. Each sidewall is connected end to end in a direction parallel to the surface of the partition to form the accommodating space. Each flange is detachably connected to the partition, and each flange extends from the end face of the sidewall adjacent to the fingerprint recognition panel toward the accommodating space. The orthographic projection of each flange on the fingerprint recognition panel does not overlap with the fingerprint recognition area.

5. The fingerprint recognition module as described in claim 4, wherein, The driving circuit connects the backlight module to the motherboard and the fingerprint recognition substrate to the motherboard through the first groove and the second groove; in a direction parallel to the surface of the partition, the backlight module is located between the fingerprint recognition substrate and the partition.

6. The fingerprint recognition module as described in claim 4, wherein, It also includes a second connector, the flange includes a second blind hole located at two edges in the extension direction of the flange, the partition includes a third through hole opposite to the second blind hole, and the second connector is embedded in the second blind hole through the third through hole.

7. The fingerprint recognition module as described in claim 4, wherein, The motherboard also includes a USB port, a switch, and a power socket, all located on the same side, wherein the switch and the power socket are located adjacent to each other.

8. The fingerprint recognition module as described in claim 7, wherein, A first opening and a second opening are provided on the side wall adjacent to the USB interface, the switch and the power socket, wherein the first opening exposes the USB interface and the second opening exposes the switch and the power socket.

9. The fingerprint recognition module as described in claim 4, wherein, It also includes a front cover, which is located on the side of the middle frame adjacent to the fingerprint recognition panel. The front cover is fixedly connected to the flange. The front cover includes a third opening, the orthographic projection of which on the fingerprint recognition panel roughly coincides with the fingerprint recognition area.

10. The fingerprint recognition module as described in claim 9, wherein, It also includes a third connector, the flange includes a fourth through hole located at two edges in the extension direction of the flange, the front cover includes a second connecting post located on the side of the front cover facing the flange, and the second connecting post includes a third blind hole, the second connecting post is embedded in the fourth through hole, and the third connector is embedded in the third blind hole.

11. The fingerprint recognition module as described in claim 10, wherein, It also includes an ambient light sensing element, which is disposed on the side of the flange away from the partition. The front cover also includes a fourth opening, the orthographic projection of which is located within the orthographic projection of the flange on the fingerprint recognition panel, and the fourth opening exposes the ambient light sensing element.

12. The fingerprint recognition module as described in claim 11, wherein, It also includes an ambient light protection film that blocks the fourth opening, and the ambient light protection film includes a transparent area located at the fourth opening.

13. The fingerprint recognition module as described in claim 12, wherein, The ambient light protection film also includes a light-shielding area that surrounds the transparent area.

14. The fingerprint recognition module as described in claim 4, wherein, It also includes a rear cover, which is located on the side of the middle frame adjacent to the motherboard, and the rear cover is fixedly connected to the middle frame.

15. The fingerprint recognition module as described in claim 14, wherein, The mid-frame also includes multiple protrusions that extend from the sidewall toward the accommodating space. The protrusions are located near the corners of the accommodating space. The orthographic projection of the protrusions on the fingerprint recognition panel does not overlap with the fingerprint recognition area. The protrusions are fixedly connected to the back cover.

16. The fingerprint recognition module as described in claim 15, wherein, It also includes a fourth connector, the protrusion including a fourth blind hole, the rear shell including a fifth through hole, and the fourth connector being inserted into the fourth blind hole through the fifth through hole.

17. The fingerprint recognition module as described in claim 5, wherein, The fingerprint recognition panel also includes a border area surrounding the fingerprint recognition area. The border area includes a first border area and a second border area that are opposite to each other, and a third border area and a fourth border area that are respectively connected to the first border area and the second border area. The driving circuit includes a flip-chip thin film, a first flexible circuit board, and a second flexible circuit board, wherein... The flip-chip film is located in the first frame area. The flip-chip film is folded from the side of the fingerprint recognition substrate away from the backlight module toward the motherboard. The flip-chip film connects the fingerprint recognition substrate and the motherboard. The first flexible circuit board is located in the third frame area and the fourth frame area. The first flexible circuit board is folded from the side of the fingerprint recognition substrate away from the backlight module toward the motherboard. The first flexible circuit board connects the fingerprint recognition substrate and the motherboard. The second flexible circuit board is located in the second frame area. The second flexible circuit board is folded from the side of the backlight module toward the fingerprint recognition substrate toward the motherboard. The second flexible circuit board connects the backlight module and the fingerprint recognition substrate.

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