Fingerprint identification module and fingerprint identification device

Abstract

The utility model relates to a fingerprint identification module and a fingerprint identification device, the fingerprint identification module comprises a flexible circuit board, a fingerprint identification unit and a connection port used for connecting a mainboard, and the fingerprint identification unit and the connection port are arranged on the flexible circuit board along the length direction of the flexible circuit board. The fingerprint identification unit is electrically connected with the connection port through the flexible circuit board, and the fingerprint identification unit is provided with an identification area used for collecting fingerprints. The fingerprint identification module and the fingerprint identification equipment provided by the utility model solve the problem of poor compatibility of the traditional fingerprint module.

Description

Technical Field

[0001] The utility model relates to the technical field of fingerprint recognition devices, in particular to a fingerprint recognition module and a fingerprint recognition device. Background Art

[0002] With the wide application of fingerprint recognition for biometric living locks, it has become increasingly common to have a fingerprint recognition module built into the lock. However, the existing fingerprint recognition modules occupy a large area and are not applicable to locks of various shapes, resulting in poor compatibility. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a fingerprint recognition module and a fingerprint recognition device, aiming to solve the problem of poor compatibility of the existing fingerprint modules.

[0004] To achieve the above object, a fingerprint recognition module proposed by the utility model includes a flexible circuit board, a fingerprint recognition unit, and a connection port for connecting to a main board. The fingerprint recognition unit and the connection port are arranged along the length direction of the flexible circuit board, and the fingerprint recognition unit and the connection port are electrically connected through the flexible circuit board. The fingerprint recognition unit has a recognition area for collecting fingerprints.

[0005] According to some embodiments of the utility model, the flexible circuit board has opposite first and second sides. The fingerprint recognition unit is located on the first side of the flexible circuit board, and a support portion is provided on the second side of the flexible circuit board, and the support portion is arranged corresponding to the position of the fingerprint recognition unit.

[0006] According to some embodiments of the utility model, the material of the support portion is a conductive material. The support portion is electrically connected to the flexible circuit board, and the support portion has a grounding side electrically connected to a grounding wire.

[0007] According to some embodiments of the utility model, a conductive adhesive is provided between the support portion and the second side of the flexible circuit board, and the support portion and the flexible circuit board are electrically connected through the conductive adhesive.

[0008] According to some embodiments of the utility model, a chip filling adhesive is filled between the fingerprint recognition unit and the flexible circuit board.

[0009] According to some embodiments of the utility model, a glue storage groove is formed at one end of the fingerprint recognition unit in its length direction, and the glue storage groove is located on the side of the fingerprint recognition unit facing the flexible circuit board.

[0010] According to some embodiments of the present utility model, the fingerprint recognition unit is arranged in an elongated shape, and glue storage grooves are provided at both ends of the fingerprint recognition unit in its length direction, and both of the two glue storage grooves are located on the side of the fingerprint recognition unit facing the flexible circuit board.

[0011] According to some embodiments of the present utility model, the fingerprint recognition unit has a dispensing surface for the chip filling glue output by a dispenser, and the dispensing surface extends along the length direction of the fingerprint recognition unit.

[0012] According to some embodiments of the present utility model, a protective coating is covered on the recognition area of the fingerprint recognition unit.

[0013] In addition, the present utility model also provides a fingerprint recognition device, including the fingerprint recognition module as described in any one of the above.

[0014] The present utility model has at least the following beneficial effects:

[0015] In the present utility model, the fingerprint recognition unit and the connection port are arranged on the flexible circuit board along its length direction, and the fingerprint recognition unit and the connection port are electrically connected through the flexible circuit board. The existing fingerprint module uses an ordinary PCB circuit board, and the fingerprint recognition unit and the connection port are correspondingly arranged on both sides of the PCB circuit board. Since the connection port is electrically connected to the main board, the entire fingerprint module must be stacked on the main board, resulting in poor compatibility of the fingerprint module. However, the present utility model uses the flexible circuit board, and the connection port is arranged on one side of the fingerprint recognition unit. The production personnel can bend the flexible circuit board according to actual needs and set the fingerprint recognition unit at any required position to adapt to door locks of various shapes, thereby greatly improving the compatibility of the fingerprint recognition module. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a side view of a fingerprint recognition module provided by an embodiment of the present utility model;

[0018] Figure 2 For Figure 1 is a partial enlarged schematic diagram of A in

[0019] Figure 3 For Figure 1Front view of the fingerprint recognition module.

[0020] Description of the reference numerals in the drawings:

[0021] 100 - fingerprint recognition module; 1 - flexible circuit board; 2 - fingerprint recognition unit; 21 - glue storage groove; 22 - dispensing surface; 3 - connection port; 4 - support part; 41 - grounding side; 5 - conductive glue; 6 - chip filling glue; 7 - protective coating. Specific embodiments

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0025] The present invention provides a fingerprint recognition module and a fingerprint recognition device. Figures 1 to 3 This is a specific embodiment of a fingerprint recognition module provided by the present invention.

[0026] As Figure 1 and Figure 3As shown in the figure, an embodiment of the present utility model provides a fingerprint recognition module 100, which includes a flexible circuit board 1, a fingerprint recognition unit 2, and a connection port 3 for connecting to a main board. The fingerprint recognition unit 2 and the connection port 3 are arranged along the length direction of the flexible circuit board 1, and the fingerprint recognition unit 2 and the connection port 3 are electrically connected through the flexible circuit board 1. The fingerprint recognition unit 2 has a recognition area for collecting fingerprints.

[0027] In the present utility model, the fingerprint recognition unit 2 and the connection port 3 are arranged along the length direction of the flexible circuit board 1, and the fingerprint recognition unit 2 and the connection port 3 are electrically connected through the flexible circuit board 1. Existing fingerprint modules use ordinary PCB circuit boards, and the fingerprint recognition unit and the connection port are correspondingly arranged on both sides of the PCB circuit board. Since the connection port is electrically connected to the main board, the entire fingerprint module must be stacked on the main board, resulting in poor compatibility of the fingerprint module. However, the present utility model uses the flexible circuit board 1, and the connection port 3 is arranged on one side of the fingerprint recognition unit 2. Production personnel can bend the flexible circuit board 1 according to actual needs and set the fingerprint recognition unit 2 at any required position to adapt to door locks of various shapes, thereby greatly improving the compatibility of the fingerprint recognition module 100.

[0028] It should be noted that the fingerprint recognition module 100 uses a fingerprint recognition module on a mobile phone. Compared with traditional door lock fingerprint modules, it has a smaller volume and integrates various components such as capacitors and resistors, eliminating the need to additionally arrange components on the circuit board. On the one hand, this greatly reduces the overall volume of the fingerprint recognition module 100, and on the other hand, it improves the production yield of the fingerprint recognition module 100.

[0029] Since the flexible circuit board 1 is used, there is a lack of support for the fingerprint recognition unit 2 after it is arranged on the flexible circuit board 1, making it prone to damage. Therefore, in some embodiments, as Figure 1 shown in the figure, the flexible circuit board 1 has opposite first and second sides. The fingerprint recognition unit 2 is located on the first side of the flexible circuit board 1, and a support portion 4 is provided on the second side of the flexible circuit board 1. The support portion 4 is arranged corresponding to the position of the fingerprint recognition unit 2. With this arrangement, the support portion 4 is arranged at the corresponding position of the fingerprint recognition unit 2. On the one hand, it can protect the flexible circuit board 1, and on the other hand, the support portion 4 can be connected to the housing of the fingerprint recognition device to fix the fingerprint recognition unit 2, preventing the fingerprint recognition unit 2 from moving within the housing, affecting fingerprint collection and recognition, and even causing damage to the fingerprint recognition unit 2.

[0030] For safety reasons, the fingerprint recognition unit 2 and the flexible circuit board 1 need to be grounded. Therefore, in some embodiments, asFigure 2 As shown, the material of the support portion 4 is a conductive material. The support portion 4 is electrically connected to the flexible circuit board 1, and the support portion 4 has a grounding side 41 electrically connected to the grounding wire. With such a setting, since the support portion 4 is electrically connected to the grounding wire and the support portion 4 is electrically connected to the flexible circuit board 1, the fingerprint recognition unit 2 and the flexible circuit board 1 are grounded.

[0031] Furthermore, there is no limitation on the fixing method of the support portion 4 and the flexible circuit board 1, as long as the support portion 4 is electrically connected to the flexible circuit board 1. For example, in some embodiments, as Figure 2 shown, a conductive adhesive 5 is provided between the support portion 4 and the second side of the flexible circuit board 1. The support portion 4 and the flexible circuit board 1 are electrically connected through the conductive adhesive 5. On the one hand, the support portion 4 can be bonded to the flexible circuit board 1 through the conductive adhesive 5, and on the other hand, the gap between the support portion 4 and the flexible circuit board 1 can be filled, thereby improving the conductive efficiency.

[0032] In order to better fix the fingerprint recognition unit 2 on the flexible circuit board 1, in some embodiments, as Figure 2 and Figure 3 shown, a chip filling adhesive 6 is filled between the fingerprint recognition unit 2 and the flexible circuit board 1. The chip filling adhesive 6 can not only fix the fingerprint recognition unit 2, isolate the fingerprint recognition unit 2 from the external environment, prevent the fingerprint recognition unit 2 from being eroded by harmful substances such as moisture and oxygen, thereby improving the reliability and stability of the fingerprint recognition unit 2, but also protect the flexible circuit board 1 from mechanical stress and chemical corrosion and other influences.

[0033] Generally, when dispensing glue with a glue dispenser, the fingerprint recognition unit 2 is located below the flexible circuit board 1. In order to prevent the chip filling adhesive 6 from overflowing and flowing to the recognition area position of the fingerprint recognition unit 2, in some embodiments, as Figure 2 shown, the fingerprint recognition unit 2 is arranged in an elongated shape, and a glue storage groove 21 is formed at one end of the fingerprint recognition unit 2 in its length direction. The glue storage groove 21 is located on the side of the fingerprint recognition unit 2 facing the flexible circuit board 1. When the chip filling adhesive 6 overflows, it will flow into the glue storage groove 21, avoiding flowing to the recognition area position of the fingerprint recognition unit 2 and affecting the collection and recognition of fingerprints.

[0034] Furthermore, in some embodiments, as Figure 2As shown, glue storage grooves 21 are provided at both ends of the fingerprint recognition unit 2 in its length direction, and the two glue storage grooves 21 are both located on the side of the fingerprint recognition unit 2 facing the flexible circuit board 1. With such a setting, the tolerance rate during glue overflow is improved by arranging multiple glue storage grooves 21.

[0035] Specifically, in some embodiments, as Figure 2 and Figure 3 shown, the fingerprint recognition unit 2 has a dispensing surface 22 for the chip filling glue 6 to be output by a dispenser, and the dispensing surface 22 extends along the length direction of the fingerprint recognition unit 2. In the prior art, due to the relatively large volume of the fingerprint recognition unit, in order to fix the fingerprint recognition unit more firmly on the circuit board, the chip filling glue 6 is generally output along the circumferential direction of the fingerprint recognition unit, resulting in a higher cost. In the fingerprint recognition unit 2 of the present utility model, the volume is smaller and the actual shape is slender. According to the actual situation, the chip filling glue 6 is output along its length, and the cost is lower on the premise of ensuring fixation.

[0036] Since the recognition area of the fingerprint recognition unit 2 is exposed, it may be scratched during long-term use, affecting the collection and recognition of fingerprints. Therefore, in some embodiments, as Figure 2 shown, a protective coating 7 is provided on the recognition area of the fingerprint recognition unit 2. On the one hand, the recognition area of the fingerprint recognition unit 2 can be protected by the protective coating 7. On the other hand, the color of the protective coating 7 can be adapted to the color of the housing of the fingerprint recognition device, improving the integrity of the fingerprint recognition device.

[0037] In addition, the present utility model also provides a fingerprint recognition device, including a fingerprint recognition module 100, the fingerprint recognition module 100 includes a flexible circuit board 1, a fingerprint recognition unit 2 and a connection port 3 for connecting to the main board. The fingerprint recognition unit 2 is electrically connected to the flexible circuit board 1. The connection port 3 is provided on one side of the fingerprint recognition unit 2 in the length direction of the flexible circuit board 1. The fingerprint recognition unit 2 and the connection port 3 are electrically connected through the flexible circuit board 1. The fingerprint recognition unit 2 has a recognition area for collecting fingerprints.

[0038] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A fingerprint recognition module, characterized in that: It includes a flexible circuit board, a fingerprint recognition unit and a connection port for connecting to a mainboard. The fingerprint recognition unit and the connection port are arranged along the length direction of the flexible circuit board. The fingerprint recognition unit and the connection port are electrically connected through the flexible circuit board. The fingerprint recognition unit has an identification area for collecting fingerprints.

2. The fingerprint recognition module according to claim 1, characterized in that: The flexible circuit board has a first side and a second side opposite to each other. The fingerprint identification unit is located on the first side of the flexible circuit board. A supporting portion is provided on the second side of the flexible circuit board. The supporting portion is arranged corresponding to the position of the fingerprint identification unit.

3. The fingerprint recognition module according to claim 2, characterized in that: The support portion is made of a conductive material, is electrically connected to the flexible printed circuit board, and has a grounding side electrically connected to a grounding wire.

4. The fingerprint recognition module according to claim 3, characterized in that: Conductive glue is provided between the support portion and the second side of the flexible circuit board, and the support portion and the flexible circuit board are electrically connected through the conductive glue.

5. The fingerprint recognition module according to claim 1, characterized in that: Chip filling glue is filled between the fingerprint recognition unit and the flexible circuit board.

6. The fingerprint recognition module according to claim 5, characterized in that: The fingerprint recognition unit is arranged in an elongated shape, and a glue storage groove is provided at one end of the fingerprint recognition unit in the length direction, and the glue storage groove is located at a side of the fingerprint recognition unit facing the flexible circuit board.

7. The fingerprint recognition module according to claim 6, characterized in that: The fingerprint recognition unit is provided with the glue storage grooves at both ends in the length direction thereof, and the two glue storage grooves are both located at a side of the fingerprint recognition unit facing the flexible circuit board.

8. The fingerprint recognition module according to claim 6, characterized in that: The fingerprint recognition unit has a dispensing surface for a dispensing machine to output the chip filling glue, and the dispensing surface extends along the length direction of the fingerprint recognition unit.

9. The fingerprint recognition module according to claim 1, characterized in that: The identification area of ​​the fingerprint identification unit is covered with a protective coating.

10. A fingerprint recognition device, characterized in that: It comprises a fingerprint recognition module as described in any one of claims 1 to 9.

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