Fingerprint module with positioning hole and fingerprint electronic device

Abstract

A fingerprint module with positioning holes and a fingerprint electronic device, the fingerprint module comprising: a fingerprint identification component; an FPC, comprising an FPC inner overlap portion, an FPC outer extension portion and an FPC connection portion; the FPC inner overlap portion is positioned below the fingerprint identification component and forms an electrical connection; the FPC outer extension portion is used for lead wires and electrically connected to the opposite system mainboard; a reinforcing sheet, comprising a reinforcing sheet connection portion, positioned below the FPC inner overlap portion; at least two positioning holes, staggered with the FPC connection portion, and matched with at least two positioning posts corresponding to the whole machine, for fixing the fingerprint module on the whole machine by snapping the corresponding positioning posts through the positioning holes in the assembly state. Thereby, the assembly accuracy of the fingerprint module can be effectively improved, so that the module is firmly positioned during use, and deviation is prevented, which helps to increase the service life of the fingerprint module. In particular, the effect is particularly significant for fingerprint identification components with a circular main body outer contour.

Description

Technical Field

[0001] The present application relates to the field of biometric identification technology, and in particular to a fingerprint module with a positioning hole and a fingerprint electronic device. Background Art

[0002] Fingerprint modules are widely used in various scenarios, such as mobile phones, door locks and other electronic products. When a conventional fingerprint module is assembled with a complete machine, it is placed in a slot designed by the complete machine that is consistent with the size of the fingerprint module. However, considering the convenience of taking and placing the fingerprint module in the slot and the module tolerance, the slot size needs to be designed to be larger than the module size, which will limit the assembly accuracy, causing the module to loosen and deviate, thus affecting the service life of the fingerprint module. This problem is particularly prominent for fingerprint recognition components with a circular outer contour. Summary of the invention

[0003] In order to solve at least one problem existing in the prior art, the purpose of the present application is to provide a fingerprint module and a fingerprint electronic device with a positioning hole, which can effectively improve the assembly accuracy of the fingerprint module, so that the module is firmly positioned during use, prevents displacement, and helps to increase the service life of the fingerprint module. In particular, the effect is particularly significant for fingerprint recognition components with a circular main body outer contour.

[0004] To achieve the above purpose, the fingerprint module with positioning holes provided in the present application includes:

[0005] Fingerprint recognition component, used to collect and recognize fingerprint information;

[0006] The FPC comprises an FPC inner overlap portion, an FPC outer overlap portion, and an FPC connecting portion between the FPC inner overlap portion and the FPC outer overlap portion; wherein the FPC inner overlap portion is positioned below the fingerprint recognition component and forms an electrical connection; the FPC outer overlap portion is used for wiring and electrically connecting to a mainboard of a peer system; and,

[0007] The reinforcing sheet comprises a reinforcing sheet connecting portion and at least two positioning hole portions; wherein,

[0008] The reinforcing sheet connection portion is positioned below the FPC inner overlap portion;

[0009] The at least two positioning holes are staggered with the FPC connection part and matched with at least two positioning posts on the fingerprint electronic device in a one-to-one manner, so as to fix the fingerprint module on the whole machine by engaging the corresponding positioning posts through the positioning holes in the assembled state.

[0010] Optionally, the snap-fitted positioning hole portions and positioning posts are fixed by glue.

[0011] Optionally, the at least two positioning hole portions include at least two diagonal positioning hole portions, and the two diagonal positioning hole portions are arranged on a diagonal line of an outer peripheral contour of the fingerprint recognition component.

[0012] Further optionally, the at least two positioning hole portions include an opposite-end positioning hole portion, and the opposite-end positioning hole portion is located at the opposite end of the FPC connecting portion.

[0013] Optionally, the aperture range of the positioning hole is 1.15-1.25 mm.

[0014] Further optionally, the hole wall range of the positioning hole is 0.95-1.05 mm.

[0015] Optionally, the thickness of the reinforcement sheet is in the range of 0.25-0.35 mm.

[0016] Optionally, the thickness of the reinforcing sheet is greater than twice the thickness of the FPC; the outer edge of the reinforcing sheet connecting portion and the FPC connecting portion form a step structure, and a bending buffer glue is also provided on the step structure.

[0017] Optionally, the fingerprint recognition component includes:

[0018] A fingerprint sensing chip is welded on the upper surface of the inner overlapped portion of the FPC and is used to collect and identify fingerprint information;

[0019] An insulating cover plate, covering the upper surface of the fingerprint sensing chip and fixedly connected to the fingerprint sensing chip;

[0020] The conductive outer ring is sleeved on the outer periphery of the fingerprint sensing chip and the insulating cover plate, is fixedly connected to the insulating cover plate, and is electrically connected to the grounding end of the FPC.

[0021] To achieve the above-mentioned purpose, the present application also provides a fingerprint electronic device, including: a fingerprint module with a positioning hole as described above.

[0022] The present application discloses a fingerprint module and a fingerprint electronic device with a positioning hole, which collect and identify fingerprint information through a fingerprint recognition component; and obtain and transmit signals through an FPC; and a fixedly connected reinforcing sheet is provided under the FPC; and a reinforcing sheet connection portion and at least two positioning hole portions that match the positioning posts on the whole machine are provided on the reinforcing sheet, and the positioning hole portions are arranged staggered with the FPC connection portion, so that when the fingerprint module is used, the corresponding positioning posts on the whole machine can be buckled through the positioning hole portions, so that the fingerprint module can be firmly fixed on the whole machine. In this way, the assembly accuracy of the fingerprint module can be effectively improved, so that the module is firmly positioned during use to prevent displacement, which helps to increase the service life of the fingerprint module. In particular, for fingerprint recognition components with a circular main body outer contour, loosening, rotation, and displacement can be effectively prevented, and the effect is particularly significant.

[0023] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0025] Figure 1 A top view of a fingerprint module with a positioning hole according to an embodiment of the present application;

[0026] Figure 2 for Figure 1 AA cross-section of the fingerprint module with positioning holes in the middle;

[0027] Figure 3 for Figure 1 Bottom view of the fingerprint module with a positioning hole in the middle;

[0028] Figure 4 The structure block diagram of the fingerprint electronic device according to the embodiment of the present application.

[0029] Specifically, the following reference numerals are included:

[0030] Fingerprint module-100;

[0031] Fingerprint recognition component-20; fingerprint sensor chip-21; insulating cover plate-22; conductive outer ring-23;

[0032] FPC-30; FPC inner overlap-31; FPC outer extension-32; FPC connection-33; FPC interface end-34; bending buffer glue-35;

[0033] Reinforcing plate 40; reinforcing plate connecting portion 41; positioning hole portion 42; positioning hole 43; diagonal positioning hole portion 44; opposite end positioning hole portion 45. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0035] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0036] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0037] Combination Figure 1-Figure 3 As shown, the fingerprint module 100 with positioning holes includes: a fingerprint recognition component 20, an FPC 30 and a reinforcement sheet 40.

[0038] The fingerprint recognition component 20 is used to collect and recognize fingerprint information.

[0039] The FPC 30 (Flexible Printed Circuit) includes an FPC inner stacking portion 31 , an FPC outer stacking portion 32 , and an FPC connecting portion 33 located between the FPC inner stacking portion 31 and the FPC outer stacking portion 32 .

[0040] The FPC inner overlap portion 31 is positioned below the fingerprint recognition component 20 and forms an electrical connection. In a specific example, the upper surface of the FPC inner overlap portion 31 is welded to the lower surface of the chip in the fingerprint recognition component 20. The FPC outer extension portion 32 is used for lead wires and is electrically connected to the opposite system motherboard through the FPC interface end 34.

[0041] In a specific example, a circuit, a pad, and exposed copper are provided on the FPC 30. The circuit is used for electrical characteristic connection; the pad is used for fixing the fingerprint recognition component 20 and electronic components; and the exposed copper is used for electrical conduction.

[0042] The reinforcing sheet 40 includes a reinforcing sheet connecting portion 41 and at least two positioning holes 42 .

[0043] The reinforcing sheet connection portion 41 is positioned below the FPC inner overlap portion 31. Positioning holes 43 are provided on the positioning hole portion 42. These positioning holes 42 are staggered with the FPC connection portion 33, and are matched with at least two positioning posts on the fingerprint electronic device in a one-to-one correspondence, so that the fingerprint module 100 is fixed to the device in the assembled state by snapping the corresponding positioning posts through the positioning holes 42.

[0044] It is understandable that the reinforcing sheet 40 may be a reinforcing steel sheet, or may be a rigid reinforcing sheet 40 made of other suitable materials. The present application does not impose any specific limitation on this.

[0045] According to the fingerprint module and fingerprint electronic device with positioning holes in the embodiment of the present application, fingerprint information is collected and identified through the fingerprint recognition component; and signals are obtained and transmitted through the FPC; and a fixedly connected reinforcing sheet is provided under the FPC; and a reinforcing sheet connection portion and at least two positioning hole portions that match the positioning columns on the whole machine are provided on the reinforcing sheet, and the positioning hole portion and the FPC connection portion are staggered, so that when the fingerprint module is used, the positioning hole portion can be used to buckle the corresponding positioning column on the whole machine, so that the fingerprint module is firmly fixed on the whole machine. In this way, the assembly accuracy of the fingerprint module can be effectively improved, so that the module is firmly positioned during use to prevent displacement, which helps to increase the service life of the fingerprint module. In particular, for fingerprint recognition components with a circular main body outer contour, loosening, rotation, and displacement can be effectively prevented, and the effect is particularly significant.

[0046] In the embodiment of the present application, the fingerprint recognition component 20 may include a fingerprint sensing chip 21 , an insulating cover plate 22 and a conductive outer ring 23 .

[0047] The fingerprint sensing chip 21, namely LGA (Land Grid Array), is welded on the upper surface of the FPC inner overlap portion 31 and is used to collect and identify fingerprint information.

[0048] The insulating cover plate 22 covers the upper surface of the fingerprint sensing chip 21 and is fixedly connected to the fingerprint sensing chip 21. The insulating cover plate 22 is used to cover and protect the fingerprint sensing chip 21 on the one hand; on the other hand, it is used to directly contact the fingerprint to form a capacitance value between the fingerprint of the finger and the fingerprint sensing chip 21, so that the fingerprint sensing chip 21 can use the capacitance value information to identify the fingerprint pattern. In a specific example, the insulating cover plate 22 can be made of glass or sapphire.

[0049] The conductive outer ring 23 is sleeved on the outer periphery of the fingerprint sensor chip 21 and the insulating cover plate 22, is fixedly connected to the insulating cover plate 22, and is electrically connected to the ground terminal of the FPC 30. In a specific example, the conductive outer ring 23 is made of metal and can be electrically connected to the ground terminal of the FPC 30 through conductive silver paste to release static electricity.

[0050] It can be understood that the fingerprint recognition component 20 in the present application can be composed of the components in the above embodiment, or can be composed of other applicable components, as long as it can collect and identify fingerprint information, and the present application does not make any specific restrictions on this.

[0051] In the embodiment of the present application, the snap-fitted positioning hole portion 42 and the positioning column can also be fixed by glue.

[0052] In the embodiment of the present application, the positioning hole portion 42 of the reinforcing sheet 40 may include at least two diagonal positioning hole portions 44 , and the two diagonal positioning hole portions 44 are arranged on the diagonal line of the outer periphery of the fingerprint recognition component 20 .

[0053] Furthermore, the at least two positioning hole portions 42 may further include an opposite end positioning hole portion 45 , and the opposite end positioning hole portion 45 is located at the opposite end of the FPC connecting portion 33 .

[0054] In a specific example, Figure 1 and Figure 3 As shown, the reinforcing sheet 40 may include five positioning holes 42 , namely, two groups of diagonal positioning holes 44 and one end positioning hole 45 , which can further improve the positioning stability of the module during use.

[0055] In the embodiment of the present application, the aperture range of the positioning hole 43 is preferably 1.15-1.25 mm. Further, the aperture range of the positioning hole 43 is preferably 0.95-1.05 mm. In this way, better fixing reliability and space occupation are taken into account.

[0056] In the embodiment of the present application, the thickness of the reinforcing sheet 40 may be in the range of 0.25-0.35 mm, so as to achieve a good balance between the rigidity strength and material cost of the reinforcing sheet 40 .

[0057] In the embodiment of the present application, the thickness of the reinforcing sheet 40 can be greater than twice the thickness of the FPC 30 to ensure the rigidity of the reinforcing sheet 40. At this time, the outer edge of the reinforcing sheet connection part 41 and the FPC connection part 33 form a step structure, and the step structure can be provided with a bending buffer glue 35. In other words, when the FPC 30 is bent at 90 degrees, it is easy to be injured by the reinforcing sheet 40. Therefore, the bending buffer glue 35 is added between the reinforcing sheet 40 and the FPC 30 to protect the FPC 30 from damage, thereby further improving the service life of the fingerprint module 100.

[0058] Figure 4 FIG. 1 is a structural block diagram of a fingerprint electronic device according to an embodiment of the present application. Figure 4 As shown, the fingerprint electronic device 1000 includes the fingerprint module 100 with positioning holes in the above embodiment. The fingerprint electronic device 1000 can be a mobile phone or a door lock.

[0059] It should be noted that in the drawings, the sizes of layers, regions, components and their relative sizes may be exaggerated for clarity. The same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions.

[0060] It should be noted that the modification of "one" mentioned in the present application is illustrative rather than restrictive, and those skilled in the art should understand that it should be understood as "one or more" unless otherwise clearly indicated in the context.

[0061] It should be noted that when a structure or layer is referred to as being "on...", it may be directly on other components or layers, or there may be intervening components or structures. The relationship between structures should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. It should be noted that the orientation or position relationship indicated by the terms "middle", "peripheral", "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0062] It should be noted that the specific numerical values ​​mentioned above are only used as examples to illustrate the implementation of the present application in detail, and should not be understood as limiting the present application. In other implementations or examples, other numerical values ​​can be selected according to the present application, and are not specifically limited here.

[0063] Those skilled in the art can understand that the above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fingerprint module with a positioning hole, characterized in that: The fingerprint module comprises: Fingerprint recognition component, used to collect and recognize fingerprint information; The FPC comprises an FPC inner overlap portion, an FPC outer overlap portion, and an FPC connecting portion between the FPC inner overlap portion and the FPC outer overlap portion; wherein the FPC inner overlap portion is positioned below the fingerprint recognition component and forms an electrical connection; the FPC outer overlap portion is used for wiring and electrically connecting to a mainboard of a peer system; and, The reinforcing sheet comprises a reinforcing sheet connecting portion and at least two positioning hole portions; wherein, The reinforcing sheet connection portion is positioned below the FPC inner overlap portion; The at least two positioning holes are staggered with the FPC connection part and matched with at least two positioning posts on the fingerprint electronic device in a one-to-one manner, so as to fix the fingerprint module on the whole machine by engaging the corresponding positioning posts through the positioning holes in the assembled state.

2. The fingerprint module with positioning holes according to claim 1, characterized in that: The snap-fitting positioning holes and positioning posts are fixed with glue.

3. The fingerprint module with positioning holes according to claim 1, characterized in that: The at least two positioning hole portions include at least two diagonal positioning hole portions, and the two diagonal positioning hole portions are arranged on the diagonal lines of the outer peripheral contour of the fingerprint recognition component.

4. The fingerprint module with positioning holes according to claim 3, characterized in that: The at least two positioning hole portions include an opposite end positioning hole portion, and the opposite end positioning hole portion is located at the opposite end of the FPC connecting portion.

5. The fingerprint module with positioning holes according to claim 1, characterized in that: The aperture range of the positioning hole is 1.15-1.25 mm.

6. The fingerprint module with positioning holes according to claim 5, characterized in that: The hole wall range of the positioning hole is 0.95-1.05 mm.

7. The fingerprint module with positioning holes according to claim 1, characterized in that: The thickness of the reinforcing sheet is in the range of 0.25-0.35 mm.

8. The fingerprint module with positioning holes according to claim 1, characterized in that: The thickness of the reinforcing sheet is greater than twice the thickness of the FPC; the outer edge of the reinforcing sheet connection portion and the FPC connection portion form a step structure, and a bending buffer glue is also provided on the step structure.

9. The fingerprint module with positioning holes according to any one of claims 1 to 8, characterized in that: The fingerprint recognition component comprises: A fingerprint sensing chip is welded on the upper surface of the inner overlapped portion of the FPC and is used to collect and identify fingerprint information; An insulating cover plate, covering the upper surface of the fingerprint sensing chip and fixedly connected to the fingerprint sensing chip; The conductive outer ring is sleeved on the outer periphery of the fingerprint sensing chip and the insulating cover plate, is fixedly connected to the insulating cover plate, and is electrically connected to the grounding end of the FPC.

10. A fingerprint electronic device, characterized in that: include: A fingerprint module with a positioning hole as described in any one of claims 1 to 9.

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