Ultrasonic fingerprint key with luminous LOGO

Abstract

The utility model discloses an ultrasonic fingerprint key with a luminous LOGO, and the key comprises a bottom cover which is provided with an accommodation space and a through hole communicated with the accommodation space; the ultrasonic fingerprint sensing module is arranged in the accommodating space, the ultrasonic fingerprint sensing module comprises a fingerprint identification chip, an ultrasonic fingerprint substrate and an FPC (Flexible Printed Circuit) which are sequentially arranged from top to bottom, and the fingerprint identification chip and the ultrasonic fingerprint substrate are both connected with the FPC; the touch switch is integrated on the back surface of the FPC flexible circuit board, and the touch switch penetrates through the through hole and is arranged outside the bottom cover; a hollow LOGO is arranged on the cover plate, and the cover plate is fixedly connected to the bottom cover; and the LED lamp sheet is arranged at the dead center of the cover plate. According to the utility model, rapid and accurate identification and response can be realized in any scene, the requirement of customers on appearance is met, and the use experience of users is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fingerprint modules, in particular to an ultrasonic fingerprint button with a luminous LOGO. Background Art

[0002] Currently, fingerprint recognition on the market is illuminated by the LOGO. When unlocking, you need to touch the surface of the chip to collect and identify the fingerprint. Structurally, it is impossible to move the light-emitting device to the middle of the chip for identification. In addition, during the illumination process, because the light-emitting device cannot be placed in the center of the fingerprint, it can only guide light from the side or the front side of the chip. The light cannot be evenly distributed, resulting in weak fingerprint recognition penetration and the inability to recognize fingers with water or sweat. Optical fingerprint module recognition is greatly affected by light. When the surface LOGO is illuminated, it will directly interfere with the module's fingerprint collection and affect the module's use. Therefore, it is necessary to make improvements. Summary of the Invention

[0003] In order to solve the above problems of the prior art, the utility model provides an ultrasonic fingerprint button with LOGO lighting, which can realize simultaneous fingerprint recognition when the LOGO lights up, and is simple to input, and can accurately identify fingers with dirt, grease and sweat.

[0004] To achieve the above-mentioned purpose, the present invention provides an ultrasonic fingerprint button with LOGO illumination, comprising:

[0005] A bottom cover, wherein a receiving space is formed on the bottom cover, and a through hole communicating with the receiving space is provided on the bottom cover;

[0006] An ultrasonic fingerprint sensing module is provided in the accommodating space, and the ultrasonic fingerprint sensing module includes a fingerprint recognition chip, an ultrasonic fingerprint substrate, and an FPC flexible circuit board arranged in sequence from top to bottom, and the fingerprint recognition chip and the ultrasonic fingerprint substrate are both connected to the FPC flexible circuit board;

[0007] A tact switch, the tact switch being integrated on the back of the FPC flexible circuit board and being placed outside the bottom cover through the through hole;

[0008] A cover plate, wherein a hollow LOGO is provided on the cover plate and the cover plate is fixed to the bottom cover;

[0009] An LED light sheet is arranged at the center of the cover plate.

[0010] Furthermore, the ultrasonic fingerprint sensing module also includes a cushioning foam, which is attached to the ultrasonic fingerprint substrate. The cushioning foam defines a chip mounting hole, and the fingerprint recognition chip is placed in the chip mounting hole. The cushioning foam defines a mounting cavity on the back side of the chip mounting hole, and the size of the mounting cavity matches the ultrasonic fingerprint substrate. The provision of the cushioning foam not only acts as a buffer during the fingerprint pressing process, ensuring that the cover is not easily broken and protecting the ultrasonic fingerprint sensing module, but also forms a shielding layer, reducing electromagnetic wave signal interference caused by the electronic device's motherboard and battery to the ultrasonic fingerprint module, thereby enhancing the quality of fingerprint image acquisition.

[0011] Furthermore, a reinforcing sheet is provided between the ultrasonic fingerprint substrate and the FPC flexible circuit board. The reinforcing sheet is made of SUS steel or other materials. The reinforcing sheet can increase the flatness and hardness of the FPC flexible circuit board and provide a certain heat dissipation capacity to ensure the normal operation of the FPC flexible circuit board.

[0012] Furthermore, the centers of the LED light sheet, fingerprint recognition chip, ultrasonic fingerprint substrate, and cover plate are on the same axis. This ensures more accurate fingerprint entry or verification, avoids deviation, and enhances the quality of fingerprint image acquisition.

[0013] Furthermore, the FPC flexible circuit board is folded back to form a bend and a connection portion, and the fingerprint recognition chip and ultrasonic fingerprint substrate are mounted on the bend portion, and the fingerprint recognition chip and ultrasonic fingerprint substrate are respectively connected to the connection portion. The fingerprint recognition chip and ultrasonic fingerprint substrate are respectively connected to the connection portion via ACF glue to increase the stability of the connection between the three and prevent them from falling off.

[0014] Furthermore, an opening is provided on the side edge of the bottom cover, and the end of the FPC extends to form an external connection portion, which passes through the opening and is placed outside the bottom cover. The external connection portion is connected to a connector, which improves the external expansion performance of the utility model, facilitates external connection to a computer, and is more practical.

[0015] Furthermore, one side of the FPC is covered with a copper-yellow grid film, and the other side is covered with a black anti-reflective layer. This provides good protection for the FPC and prevents reflections from affecting fingerprint image collection.

[0016] Furthermore, the cover plate is a light-guiding transparent plate, which can be made of a transparent glass plate, a transparent sapphire plate, or other light-guiding materials. This improves the light transmission performance of the cover plate, can better cooperate with the ultrasonic fingerprint sensing module, and enhance the quality of fingerprint image acquisition.

[0017] Furthermore, the bottom cover is made of aluminum alloy or other metal materials. The metal material makes the bottom cover more stable and ensures the stable operation of the internal components.

[0018] Furthermore, the bottom cover is provided with a mounting ladder, the mounting ladder being arranged above the accommodating space, and the cover plate being fixedly connected to the mounting ladder. Providing the mounting ladder can make the installation of the bottom cover and the cover plate more convenient.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] Ultrasonic fingerprint recognition solves the problem that existing luminous fingerprints cannot recognize fingers with water or sweat. Ultrasonic fingerprint recognition can quickly and accurately respond in any scenario. Ultrasonic fingerprint recognition can directly penetrate the surface of the skin and identify three-dimensional details and unique fingerprint features that current capacitive fingerprint technology cannot recognize, including fingerprint ridges and sweat pores, increasing the security performance of fingerprint recognition and improving the user experience.

[0021] Due to the characteristic that ultrasound can directly penetrate materials, the LED light sheet can keep working while it is identifying fingerprints, which can increase the visual function and meet the user's visual needs for rapid recognition in dark environments. It is easy to identify the fingerprint recognition area, which not only meets the customer's demand for appearance, but also improves the customer's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a structural diagram of an ultrasonic fingerprint button with LOGO light-emitting provided by the utility model;

[0024] Figure 2 It is an explosion diagram of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the bottom cover of the utility model;

[0026] Figure 4 This is a schematic structural diagram of the cushioning foam of the present utility model;

[0027] Figure 5 yes Figure 4 Schematic diagram of the back;

[0028] Figure 6 A schematic structural diagram of the housing of the present utility model;

[0029] Figure 7 It is a schematic diagram of the status of the external connector and components of the utility model.

[0030] The markings in the accompanying drawings are: 1. Bottom cover; 11. Accommodating space; 12. Through hole; 13. Opening; 14. Mounting ladder; 2. Fingerprint recognition chip; 3. Ultrasonic fingerprint substrate; 4. FPC flexible circuit board; 41. Bending part; 42. Connecting part; 43. Socketing space; 44. External part; 5. Buffering foam; 51. Chip mounting hole; 52. Mounting cavity; 6. Connector; 61. Components; 7. Reinforcement sheet; 8. Touch switch; 9. Cover; 91. Hollow LOGO; 10. LED light sheet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied 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 ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] like Figure 1-Figure 7 As shown, this embodiment provides an ultrasonic fingerprint button with a luminous logo, including:

[0036] A bottom cover 1, which is made of aluminum alloy or other metal materials, has an accommodating space 11 formed thereon, and a through hole 12 communicating with the accommodating space 11 formed thereon;

[0037] An ultrasonic fingerprint sensing module is arranged in the accommodating space 11, and the ultrasonic fingerprint sensing module includes a fingerprint recognition chip 2, an ultrasonic fingerprint substrate 3 and an FPC flexible circuit board 4 arranged in sequence from top to bottom. The fingerprint recognition chip 2 and the ultrasonic fingerprint substrate 3 are both connected to the FPC flexible circuit board 4. The FPC flexible circuit board 4 is folded back to form a bending portion 41 and a connecting portion 42. The setting of the bending portion 41 can form a certain socket space 43 between the connecting portion 42 and the FPC flexible circuit board 4. The ends of the fingerprint recognition chip 2 and the ultrasonic fingerprint substrate 3 are placed in the socket space 43, and the fingerprint recognition chip 2 and the ultrasonic fingerprint substrate 3 are connected to the connecting portion 42 through the provided ACF glue.

[0038] In particular, a buffer foam 5 is further provided in this embodiment. The buffer foam 5 is attached to the ultrasonic fingerprint substrate 3. The buffer foam 5 has a chip mounting hole 51, and the fingerprint recognition chip 2 is placed on the chip mounting hole 51. The buffer foam 5 has a mounting cavity 52 on the back side relative to the chip mounting hole 51. The size of the mounting cavity 52 matches the ultrasonic fingerprint substrate 3, and the ultrasonic fingerprint substrate 3 is bonded to the mounting cavity 52 by glue.

[0039] In order to facilitate the connection of other components, an opening 13 is provided on the side edge of the bottom cover 1. The end of the FPC flexible circuit board 4 extends to form an external connection portion 44. The external connection portion 44 passes through the opening 13 and is placed outside the bottom cover 1. The external connection portion 44 is connected to a connector 6. Of course, other components 61 can also be connected through the external connection portion 44 as needed. Figure 7 This embodiment shows the state of the external connector 6 and the component 61 . The provision of the external connection portion 44 can expand the scope of application of the present invention and improve its practicality.

[0040] In this embodiment, this embodiment also includes a reinforcing sheet 7, which is arranged between the ultrasonic fingerprint substrate 3 and the FPC flexible circuit board 4. The reinforcing sheet 7 is a reinforcing sheet 7 made of SUS steel sheet or other materials. One side of the FPC flexible circuit board 4 is provided with a grid copper-yellow covering film, and the other side of the FPC flexible circuit board 4 is provided with a black anti-reflective layer.

[0041] A tact switch 8 is integrated on the back of the FPC flexible circuit board 4 and is placed outside the bottom cover 1 through the through hole 12;

[0042] The cover plate 9 is a light-guiding transparent plate, which can be made of a translucent glass plate, a translucent sapphire plate or other light-guiding materials. A hollow LOGO 91 is provided on the cover plate 9. The cover plate 9 is fixed to the bottom cover 1. In order to facilitate the installation of the cover plate 9, a mounting ladder 14 is provided on the bottom cover 1. The mounting ladder 14 is arranged above the accommodating space 11. The cover plate 9 is fixed to the mounting ladder 14. In this way, the cover plate 9 can completely cover the accommodating space 11, sealing the accommodating space 11, and having strong waterproof ability and high anti-stain ability.

[0043] The LED light sheet 10 electrically connected to the FPC flexible circuit board 4 is arranged at the center of the cover plate 9. The centers of the LED light sheet 10, the fingerprint recognition chip 2, the ultrasonic fingerprint substrate 3 and the cover plate 9 are on the same axis.

[0044] The working principle of the present invention is as follows: In the present invention, the front side of the FPC flexible circuit board 4 carries a reinforcing sheet 7, which is made of SUS steel sheet, and can enhance the overall flatness and hardness of the FPC flexible circuit board 4 to prevent damage to the FPC flexible circuit board 4; the touch switch 8 is integrated into the back of the FPC flexible circuit board 4, and the fingerprint recognition chip 2 and the ultrasonic fingerprint substrate 3 are pressed together with the connecting part 42 of the FPC flexible circuit through ACF glue to achieve connection, forming a signal transmission path; the front side of the fingerprint recognition chip 2 carries an LED light sheet 10, and the ultrasonic fingerprint substrate 3 is glued and adhered to the buffering foam 5 around the periphery, and a chip mounting hole 51 is provided in the buffering foam 5, and the fingerprint recognition chip 2 is installed on the chip mounting hole 51. In this way, the setting of the buffering foam 5 not only plays a buffering role during the fingerprint pressing process, ensuring that the cover plate 9 is not easy to break, not only protects the ultrasonic fingerprint sensing module, but also forms a shielding layer, reduces the electromagnetic wave signal interference caused by the motherboard and battery of the electronic device to the ultrasonic fingerprint module, and enhances the acquisition quality of the fingerprint image; the cover plate 9 is adhered to the bottom cover by glue or the like. 1 is provided with a mounting ladder portion 14, a hollow LOGO is provided on the front surface of the cover plate 9, and an LED light piece 10 is provided in the center of the back of the cover plate 9. After installation, the cover plate 9 can wrap all components within the accommodating space 11 of the bottom cover 1, and the cover plate 9 is not easily broken during the pressing process. The FPC flexible circuit board 4 is connected to the connector 6 through the external connection portion 44 extending outside the bottom cover 1, and is connected to other internal components of the computer through the connector 6; the hollow LOGO 91 on the surface of the cover plate 9 is illuminated by the LED light piece 10 controlled by the FPC flexible circuit board 4 to achieve LOGO illumination; when the fingerprint button is activated, the ultrasonic fingerprint substrate 3 generates ultrasonic waves, which are reflected at the contact surface of the finger epidermis. The ultrasonic fingerprint substrate 3 uses the reflected ultrasonic waves to generate a fingerprint image, which is compared with the pre-stored image. After a successful match, the fingerprint is unlocked. The LED light piece 10 is placed in the center. Ultrasonic waves have the ability to penetrate materials, and the LED light piece 10 will not affect its normal imaging and signal reception. Therefore, during the pressing process, the LOGO can be illuminated and the computer can be turned on and unlocked with one click. When the computer needs to be shut down, just press and hold to shut it down.

[0045] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A LOGO luminous ultrasonic fingerprint button, characterized in that: include: A bottom cover (1), wherein a receiving space (11) is provided on the bottom cover (1), and a through hole (12) communicating with the receiving space (11) is provided on the bottom cover (1); An ultrasonic fingerprint sensing module is arranged in the accommodating space (11), the ultrasonic fingerprint sensing module comprising a fingerprint recognition chip (2), an ultrasonic fingerprint substrate (3) and an FPC flexible circuit board (4) arranged in sequence from top to bottom, the fingerprint recognition chip (2) and the ultrasonic fingerprint substrate (3) are both connected to the FPC flexible circuit board (4); A touch switch (8), the touch switch (8) is integrated on the back side of the FPC flexible circuit board (4), and the touch switch (8) passes through the through hole (12) and is placed outside the bottom cover (1); A cover plate (9), wherein a hollow LOGO (91) is provided on the cover plate (9), and the cover plate (9) is fixedly connected to the bottom cover (1); An LED light sheet (10), wherein the LED light sheet (10) is arranged at the exact center of the cover plate (9).

2. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: The ultrasonic fingerprint sensing module further comprises a buffer foam (5), the buffer foam (5) being attached to the ultrasonic fingerprint substrate (3), a chip mounting hole (51) being provided on the front side of the buffer foam (5), the fingerprint identification chip (2) being placed on the chip mounting hole (51), and a mounting cavity (52) being provided on the back side of the buffer foam (5) relative to the chip mounting hole (51), the size of the mounting cavity (52) matching that of the ultrasonic fingerprint substrate (3).

3. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: It also comprises a reinforcing sheet (7), wherein the reinforcing sheet (7) is arranged between the ultrasonic fingerprint substrate (3) and the FPC flexible circuit board (4), and the reinforcing sheet (7) is a SUS steel sheet.

4. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: The centers of the LED light sheet (10), the fingerprint identification chip (2), the ultrasonic fingerprint substrate (3) and the cover plate (9) are located on the same axis.

5. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: The FPC flexible circuit board (4) is folded back to form a bending portion (41) and a connecting portion (42); the fingerprint recognition chip (2) and the ultrasonic fingerprint substrate (3) are sleeved on the bending portion (41); and the fingerprint recognition chip (2) and the ultrasonic fingerprint substrate (3) are respectively connected to the connecting portion (42).

6. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: An opening (13) is provided on the side edge of the bottom cover (1); an end of the FPC flexible circuit board (4) extends to form an external connection portion (44); the external connection portion (44) passes through the opening (13) and is placed outside the bottom cover (1); and the external connection portion (44) is connected to a connector (6).

7. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: One side of the FPC flexible circuit board (4) is provided with a grid copper-yellow covering film, and the other side of the FPC flexible circuit board (4) is provided with a black anti-reflective layer.

8. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: The cover plate (9) is a light-guiding transparent plate.

9. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: The bottom cover (1) is an aluminum alloy bottom cover (1).

10. The LOGO luminous ultrasonic fingerprint button according to claim 1, characterized in that: The bottom cover (1) is provided with a mounting ladder portion (14), the mounting ladder portion (14) is arranged above the accommodating space (11), and the cover plate (9) is fixedly connected to the mounting ladder portion (14).

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