CN220290242U - Biological feature detection device and electronic device - Google Patents

Abstract

The embodiment of the utility model provides a biological characteristic detection device and electronic equipment, wherein the biological characteristic detection device comprises: the device comprises an ultrasonic detection module, a light-emitting assembly and a touch assembly; the ultrasonic detection module is used for detecting a biological characteristic signal through the touch assembly and sending the biological characteristic signal to the processing unit so that the processing unit can perform fingerprint detection and/or heart rate detection according to the biological characteristic signal; the touch component is a specific area of a key or a shell of the electronic equipment where the biological characteristic detection device is located; the light-emitting component is used for generating a light signal through the touch component, wherein the light signal is at least used for indicating the working state of the ultrasonic detection module. According to the scheme, the design freedom degree of the electronic equipment with fingerprint detection and heart rate detection requirements can be improved.

Description

Biological feature detection device and electronic device

Technical Field

The embodiment of the utility model relates to the technical field of electronics, in particular to a biological feature detection device and electronic equipment.

Background

Fingerprint detection is widely used as a biometric identification means for electronic device unlocking, electronic payment and password management due to invariance, uniqueness and convenience of fingerprints. When fingerprint detection is carried out, a fingerprint sensor is used for collecting a fingerprint image, the collected fingerprint image is matched with a pre-stored fingerprint template, a matching result is obtained, and when matching is successful, user identity verification is passed, and equipment unlocking, money payment or automatic password filling is completed.

At present, electronic devices commonly use optical, capacitive or inductive fingerprint sensors to collect fingerprint images, and then fingerprint detection is performed based on the collected fingerprint images.

However, some electronic devices have the need for fingerprint detection and heart rate detection, and only fingerprint detection can be performed through an optical, capacitive or inductive fingerprint sensor, but heart rate detection cannot be performed, so that a heart rate sensor needs to be equipped in the electronic device for heart rate detection, and the fingerprint sensor and the heart rate sensor occupy a larger space inside the electronic device, so that the degree of freedom of design of the electronic device is low.

Disclosure of Invention

In view of the above, embodiments of the present utility model provide a biometric detection device and an electronic device, which can improve the security of the electronic device.

According to a first aspect of an embodiment of the present utility model, there is provided a biometric detection apparatus including: the device comprises an ultrasonic detection module, a light-emitting assembly and a touch assembly; the ultrasonic detection module is used for detecting a biological characteristic signal through the touch assembly and sending the biological characteristic signal to the processing unit so that the processing unit can perform fingerprint detection and/or heart rate detection according to the biological characteristic signal; the touch component is a specific area of a key or a shell of the electronic equipment where the biological characteristic detection device is located; the light-emitting component is used for generating a light signal through the touch component, wherein the light signal is at least used for indicating the working state of the ultrasonic detection module.

In one possible implementation, the light emitting assembly includes: a first circuit board and a plurality of LEDs; the LEDs are electrically connected to the first circuit board, and the first circuit board is used for supplying power to the LEDs; the side surface of the first circuit board, on which the LEDs are mounted, is opposite to the touch assembly.

In one possible implementation, the touch assembly includes: a key cap; the inner side of button cap is provided with holds the chamber, install on the first circuit board the side of LED pass through the lamp plate laminating glue with hold the edge bonding in chamber, a plurality of LEDs are located hold the intracavity.

In one possible implementation, the key cap includes: a light shield and a support; the inner side surface of the light shield is provided with a first light shield layer, a first light hole is formed in the first light shield layer, and a first light-transmitting identification pattern is printed in the first light hole; the support body is made of a light guide material, the outer side face of the support body is attached to the inner side face of the light shield, the first light shield layer and the first identification pattern are clamped between the support body and the light shield, and the inner side face of the support body is provided with the accommodating cavity; the support body is used for conducting light emitted by the LED to the first light holes so that at least part of the light emitted by the LED is transmitted through the area where the first identification pattern is located on the light shield, and the first identification pattern is displayed.

In one possible implementation, the ultrasonic detection module includes an ultrasonic sensor, the ultrasonic sensor is glued to the bottom of the accommodating cavity through a sensor laminating adhesive, and the plurality of LEDs are distributed around the ultrasonic sensor.

In one possible implementation, the touch assembly includes a transparent cover plate, and the light emitting assembly further includes a light guide plate; a second shading layer is arranged in at least part of the area of the lower surface of the transparent cover plate, a second light hole is formed in the second shading layer, and a second transparent identification pattern is printed in the second light hole; the first circuit board is provided with a through hole, and the LEDs are distributed around the edge of the through hole; the upper surface of the light guide plate is adhered to the lower surface of the transparent cover plate through light guide plate laminating adhesive, and the second shading layer and the second identification pattern are clamped between the light guide plate and the transparent cover plate; the ultrasonic sensor is adhered to the lower surface of the light guide plate through sensor adhesive bonding, is at least partially positioned in the through hole along the axial direction of the through hole, and is at least partially positioned outside the through hole; the light guide plate is used for conducting light emitted by the LED to the second light holes so that at least part of the light emitted by the LED is transmitted through the area where the second identification pattern is located on the transparent cover plate, and the second identification pattern is displayed.

In a possible implementation manner, the transparent cover plate comprises a touch control area and/or a display area in the electronic equipment where the biological feature detection device is located; and/or the first circuit board comprises a circuit board in the electronic equipment where the biological feature detection device is located.

In one possible implementation, the sensor laminating adhesive comprises a conductive foil and double-sided adhesive tapes adhered to two sides of the conductive foil, and the double-sided adhesive tape on one side of the conductive foil is adhered to the ultrasonic sensor.

In one possible implementation manner, the conductive foil is configured to send a proximity signal to the processing unit when a finger approaches the outer side surface of the touch assembly, so that the processing unit controls the ultrasonic detection module to switch to a working state after receiving the proximity signal.

In one possible implementation, the conductive foil comprises copper foil.

In one possible implementation, the ultrasonic detection module includes: the ultrasonic sensor, the second circuit board and the connector; the ultrasonic sensor is electrically connected with the connector through the second circuit board, and the connector is used for being electrically connected with the processing unit; the ultrasonic sensor is used for detecting the biological characteristic signal and transmitting the biological characteristic signal to the connector through the second circuit board; the connector is used for transmitting the received biological characteristic signals and the heart rate signals to the processing unit.

In one possible implementation, the second circuit board comprises a flexible circuit board.

In a second aspect, an embodiment of the present utility model provides an electronic device, including a biometric detection apparatus as provided in the first aspect or any possible implementation manner of the first aspect.

According to the technical scheme, the ultrasonic detection module can detect the biological characteristic signals through the touch assembly and send the detected biological characteristic signals to the processing unit, and the processing unit can detect fingerprints and/or heart rate according to the biological characteristic signals. Because the ultrasonic detection module can be used for collecting fingerprint signals and heart rate signals, fingerprint detection and heart rate detection can be realized by the ultrasonic detection module provided by the embodiment of the utility model in the electronic equipment with fingerprint detection and heart rate detection requirements, and a fingerprint sensor and a heart rate sensor are not required to be respectively arranged, so that the occupation of the internal space of the electronic equipment is reduced, and the degree of freedom of the design of the electronic equipment can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of a biometric sensing device according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of a light emitting assembly according to one embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a key cap according to one embodiment of the present utility model;

FIG. 4A is a schematic view of the inside surface structure of a key cap according to one embodiment of the present utility model;

FIG. 4B is a schematic illustration of the outer side structure of a key cap according to one embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a biometric sensing device in accordance with one embodiment of the utility model;

FIG. 6 is a schematic cross-sectional view of a biometric sensing device in accordance with another embodiment of the present utility model;

FIG. 7 is a schematic diagram of a biometric sensing device including a key cap according to one embodiment of the present utility model;

FIG. 8 is a schematic view of a biometric sensing device including a transparent cover in accordance with one embodiment of the present utility model;

FIG. 9 is a schematic diagram of an electronic device according to one embodiment of the utility model;

fig. 10 is a schematic view of an electronic device according to another embodiment of the utility model.

Detailed Description

In order to better understand the technical solutions in the embodiments of the present utility model, the following description will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the present utility model, shall fall within the scope of protection of the embodiments of the present utility model.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the utility model. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.

Biological feature detection device

Fig. 1 is a schematic diagram of a biometric device that may be used for fingerprint and heart rate detection in accordance with one embodiment of the present utility model. As shown in fig. 1, the biometric sensing device 100 includes an ultrasonic sensing module 110, a light emitting assembly 120, and a touch assembly 130. The ultrasonic detection module 110 may detect the biometric signal through the touch assembly 130 and send the detected biometric signal to the processing unit, so that the processing unit performs fingerprint detection and/or heart rate detection according to the biometric signal. The light emitting component 120 can generate a light signal through the touch component 130, and the light signal can at least indicate the working state of the ultrasonic detection module 110. The touch assembly 130 may be a particular area of a key or housing of the electronic device in which the biometric sensing device 100 is located.

According to actual business demand, biological characteristic signal can include any one or two in fingerprint signal and the heart rate signal, can carry out fingerprint detection according to the fingerprint signal, can carry out heart rate detection according to the heart rate signal.

The ultrasonic detection module 110 may emit ultrasonic waves and receive ultrasonic signals emitted by an external structure. When a finger of a user is placed on the touch assembly 130, the ultrasonic wave emitted by the ultrasonic detection module 110 passes through the touch assembly 130 and reaches the finger, the finger reflects at least part of the reached ultrasonic wave, and the reflected ultrasonic wave passes through the touch assembly 130 and is received by the ultrasonic detection module 110. Because the reflection effect of different fingerprints on the ultrasonic wave is different, whether the heart rate also can influence the reflection of the ultrasonic wave, the ultrasonic detection module 110 can extract fingerprint signals and heart rate signals from the reflected ultrasonic wave, can carry out fingerprint detection based on the fingerprint signals, and can carry out heart rate detection based on the heart rate signals.

After acquiring the fingerprint signal and the heart rate signal, the ultrasonic detection module 110 can send the fingerprint signal and the heart rate signal to the processing unit, and the processing unit performs fingerprint detection according to the fingerprint signal and heart rate detection according to the heart rate signal. The processing unit may be any processing unit external to the biometric sensing device 100, for example, the processing unit may be a processing unit in an electronic device in which the biometric sensing device 100 is located. The processing unit performs fingerprint detection based on the fingerprint signal and heart rate detection based on the heart rate signal, and then determines whether verification passes according to the fingerprint detection result and the heart rate detection result, for example, verification passes when fingerprint matching is successful and heart rate is detected, but verification fails when fingerprint matching is not detected.

After the ultrasonic detection module 110 sends the heart rate signal to the processing unit, the processing unit can determine heart rate data of the user according to the heart rate signal, and then the heart rate data is displayed through the display screen, or the heart rate data is played through the audio playing device, so that the user can master the health state of the user at any time in the working and learning processes, the use satisfaction degree of the user is improved, and the competitiveness of the product is improved.

The touch assembly 130 serves as an interactive carrier for the biometric sensing device 100 and the user for enabling a finger to be placed on the touch assembly 130 for fingerprint sensing and heart rate sensing. The touch assembly 130 can protect the ultrasonic detection module 110, prevent the user from directly contacting the ultrasonic detection module 110, and ensure the safety of the user during the use process, and the working stability and reliability of the biological feature detection device 100.

The touch component 130 may be a key or a specific area of a housing of the electronic device where the biometric detection device 100 is located, so that the biometric detection device 100 is deployed at different positions in the electronic device, which improves applicability of the biometric detection device 100 and enables a higher degree of freedom in designing the electronic device.

The light emitting component 120 can generate a light signal through the touch component 130, and the light signal can indicate the working state of the ultrasonic detection module 110. For example, when the ultrasonic detection module 110 is in an operating state, the light emitting component 120 generates a light signal through the touch component 130, and when the ultrasonic detection module 110 is in a non-operating state, the light emitting component 120 does not emit light. The light signal sent by the light emitting component 120 can indicate the working state of the ultrasonic detection module 110, and also can indicate the verification result of the fingerprint and the heart rate, for example, when the fingerprint and the heart rate are verified, the light signal is generated by the light emitting component 120 through the touch component 130, and when the fingerprint or the heart rate is not verified, the light signal is not generated.

The light emitting assembly 120 may emit light of different colors, so that different color light signals may be generated through the touch assembly 130 to indicate different information through the different color light signals. The light emitting component 120 may operate under the control of the processing unit, i.e., the light emitting and the light emitting color of the light emitting component 120 are controlled by the processing unit.

In the embodiment of the present utility model, the ultrasonic detection module 110 may detect the biological characteristic signal through the touch assembly 130, and send the detected biological characteristic signal to the processing unit, where the processing unit may perform fingerprint detection and/or heart rate detection according to the biological characteristic signal. Because the ultrasonic detection module 110 can be used for collecting fingerprint signals and heart rate signals, fingerprint detection and heart rate detection can be realized by the ultrasonic detection module provided by the embodiment of the utility model in the electronic equipment with fingerprint detection and heart rate detection requirements, and a fingerprint sensor and a heart rate sensor are not required to be respectively arranged, so that occupation of the internal space of the electronic equipment is reduced, and the degree of freedom of the design of the electronic equipment can be improved. The light emitting component 120 can generate a light signal through the touch component 130 to indicate the working state of the ultrasonic detection module 110 through the light signal. The light signal that the light-emitting component 120 produced can instruct the operating condition of the ultrasonic detection module 110, and the user can conveniently confirm the operating condition of the ultrasonic detection module 110 based on the light signal, has promoted user experience.

When ultrasonic detection module 110 gathers fingerprint signal and rhythm of the heart signal, promptly biological characteristic signal includes fingerprint signal and rhythm of the heart signal, so processing unit can combine fingerprint and rhythm of the heart to carry out biological characteristic verification, accomplish equipment unblock, money payment or password automatic filling etc. again after fingerprint and rhythm of the heart are all verified and pass, avoided taking place through the circumstances of planar fingerprint image unblock to can improve electronic equipment's security.

Fig. 2 is a schematic diagram of a light emitting assembly according to an embodiment of the present utility model. As shown in fig. 2, the light emitting assembly 120 includes a first circuit board 121 and a plurality of LEDs (light emitting diodes) 122, the plurality of LEDs 122 being electrically connected to the first circuit board 121, the first circuit board 121 being for supplying power to the plurality of LEDs 122. The side of the first circuit board 121 on which the LEDs 122 are mounted is opposite to the touch assembly 130.

The first circuit board 121 is provided with a plurality of LEDs 122, and the first circuit board 121 can supply power to the LEDs 122 under the control of the processing unit, so that the LEDs 122 emit light or are turned off. The first circuit board 121 may be identical to the processing unit through a flat cable, or the processing unit may be connected to the first circuit board 121. Each LED122 may emit light of the same or different colors, and when each LED122 emits light of the same color, the LEDs 122 may be controlled to turn on at different frequencies to produce light that flashes at different frequencies, the light flashing at different frequencies indicating different information. When each LED122 can emit light of at least two colors, different LEDs 122 can be controlled to be turned on to generate different colors of light, with different information indicated by the different colors of light.

The first circuit board 121 may be a printed circuit board (Printed Circuit Board, PCB) or a flexible circuit board (Flexible Printed Circuit, FPC), which is not limited to the embodiment of the present utility model.

In the embodiment of the utility model, the side surface of the first circuit board 121 on which the LED122 is mounted is opposite to the touch assembly 130, that is, the LED122 and the touch assembly 130 are located on the same side of the first circuit board 121, so that when the LED122 emits light, the light emitted by the LED122 can penetrate through the touch assembly 130, so that a user can observe the light emitted by the LED122, thereby determining information indicated by the light emitted by the LED122, and improving the user experience of the user.

In one possible implementation, the touch assembly 130 may include a key cap that may be disposed in a key pad area, an upper portion of a keyboard area, a palm rest area, etc. of a notebook computer when the electronic device in which the biometric sensing device 100 is located is the notebook computer. The key cap is used as a component of the biometric sensing device 100, and can be used as a key cap, for example, a key cap of a power-on key, on the basis of being used as a finger carrier in the fingerprint sensing and heart rate sensing processes.

The key cap is used as a carrier of the ultrasonic detection module 110 and the light-emitting component 120, and cannot have bubbles, micropores and other factors influencing performance, and the key cap can be made of metal, glass, ceramic, plastic or the like.

Fig. 3 is a schematic cross-sectional view of a key cap according to an embodiment of the present utility model. As shown in fig. 3, the inner side surface of the key cap 131 is provided with a receiving cavity 1311, the side surface of the first circuit board 121 on which the LEDs 122 are mounted is adhered to the edge of the receiving cavity 1311 through a lamp panel adhesive 1312, and each LED122 is located in the receiving cavity 1311.

The outer side of the key cap 131 is a surface that a user can contact, i.e., when fingerprint detection and heart rate detection are performed, the user presses a finger on the outer side of the key cap 131. The first circuit board 121 is adhered to the inner side surface of the key cap 131 through the lamp panel adhesive 1312, and the light emitted from the LED122 is transmitted from the inner side of the key cap 131 to the outer side of the key cap 131. The inner side surface of the key cap 131 is provided with a containing cavity 1311, the containing cavity 1311 may be a pit with a round rectangular cross section, and in the direction perpendicular to the first circuit board 121, the height of the LED122 is smaller than or equal to the depth of the containing cavity 1311, so that when the first circuit board 121 is adhered to the inner side surface of the key cap 131, the containing cavity 1311 can contain each LED122.

The lamp panel laminating adhesive 1312 can be glue, adhesive tape or adhesive film, etc. The lamp panel adhesive 1312 is disposed along an edge of the first circuit board 121, the edge of the first circuit board 121 is adhered to an edge of the accommodating cavity 1311, and the LEDs 122 disposed on the first circuit board 121 are located in the accommodating cavity 1311. Since the first circuit board 121 is adhered to the key cap 131, the key cap 131 can drive the first circuit board 121 to move, when the key cap 131 is used as a key cap, the side surface of the first circuit board 121, on which the LED122 is not mounted, is contacted with the key switch, and when the key cap 131 is pressed down, the first circuit board 121 drives the key switch to move, so as to achieve the purpose of triggering the key.

In the embodiment of the present utility model, the outer side surface of the key cap 131 is the bonding surface of the finger when fingerprint and heart rate detection is performed, the inner side surface of the key cap 131 is provided with the accommodating cavity 1311, and the side surface of the first circuit board 121 on which the LEDs 122 are mounted is bonded to the edge of the accommodating cavity 1311, so that each LED122 mounted on the first circuit board 121 is located in the accommodating cavity 1311, and therefore the LEDs 122 do not occupy the height of the biological feature detection device 100 alone, so that the biological feature detection device 100 has a thinner thickness, and the installation space required for deployment of the biological feature detection device 100 is reduced, thereby improving the applicability of the biological feature detection device 100.

Fig. 4A and 4B are schematic views of a key cap according to another embodiment of the present utility model. As shown in fig. 4A and 4B, the key cap 131 includes a light shield 1313 and a support 1314. The inner side surface of the light shield 1313 is provided with a first light shielding layer, a first light hole is formed in the first light shielding layer, and a first transparent identification pattern 1315 is printed in the first light hole. The support 1314 is made of a light-guiding material, an outer side surface of the support 1314 is attached to an inner side surface of the light shield 1313, the first light shield layer and the first identification pattern are sandwiched between the support 1314 and the light shield 1313, and an accommodating cavity 1311 is formed in the inner side surface of the support 1314. The support 1314 may conduct the light emitted from the LED122 to the first light hole, so that at least a portion of the light emitted from the LED122 is transmitted through the area of the light shield 1313 where the first identification pattern 1315 is located, and the first identification pattern 1315 is revealed.

The light shielding cover 1313 may be obtained by printing a light shielding layer and a logo pattern on a transparent film material, and the transparent film material may be polyethylene terephthalate (Polyethylene Glycol Terephthalate, PET), polycarbonate (PC), or the like, and the thickness of the transparent film material is less than or equal to 2mm. The light-transmitting first identification pattern 1315 is silk-screened on the area (the area where the first light-transmitting hole is located) where light transmission is needed on the lower surface of the transparent film material, the first identification pattern 1315 can be a fingerprint pattern, the first shading layer is formed by silk-screening or spraying shading ink on other areas on the lower surface of the transparent film material, and then the transparent film material is hot-pressed to form a needed shape, so that the shading cover 1313 is obtained. The thermally pressed mask 1313 is placed in a mold, and a layer of light-conductive plastic is injection-molded and filled in the interior to form the support 1314, so that the mask 1313 and the support 1314 are integrated, and the mask layer and the first logo pattern 1315 are sandwiched between the mask 1313 and the support 1314. The material of the support 1314 may be transparent PET, PC or polymethyl methacrylate (Polymethyl Methacrylate, PMMA).

The light shielding layer cannot transmit light, the first identification pattern 1315 located in the first light transmission hole on the light shielding layer can transmit light, when the LED122 emits light, the support 1314 can transmit the light emitted by the LED122 to the first light transmission hole, so that at least part of the light emitted by the LED122 is emitted from the light shielding cover 1313 after passing through the first identification pattern 1315 from the first light transmission hole, and the first identification pattern 1315 appears. It should be appreciated that the first logo pattern 1315 is drawn from continuous or discontinuous opaque lines, and that when the LED122 is illuminated, the line areas in the first logo pattern 1315 are opaque and the non-line areas are transparent, thereby rendering the first logo pattern 1315 opaque.

In the embodiment of the utility model, the key cap 131 has a two-layer structure including the light shield 1313 and the support 1314, and the light shield layer and the first identification pattern 1315 are sandwiched between the light shield 1313 and the support 1314, so that the first identification pattern 1315 is not directly contacted when a user uses the fingerprint identification and heart rate identification functions, the identification pattern on the key cap 131 has stronger friction resistance, the aesthetic property of a product is prevented from being influenced after the identification pattern is worn, the durability of the biological feature detection device 100 is ensured, and the use experience of the user can be improved.

FIG. 5 is a schematic cross-sectional view of a biometric sensing device according to another embodiment of the present utility model. As shown in fig. 5, the ultrasonic detection module 110 includes an ultrasonic sensor 111, the ultrasonic sensor 111 is adhered to the bottom of the accommodating cavity 1311 by a sensor adhesive 112, and a plurality of LEDs 122 are distributed around the ultrasonic sensor 111.

The ultrasonic detection module 110 includes an ultrasonic sensor 111, the ultrasonic sensor 111 may be an ultrasonic chip, and the ultrasonic sensor 111 may emit a generated wave toward an outer side surface of the key cap 131 and receive the reflected ultrasonic wave. The ultrasonic sensor 111 is adhered to the inner side surface of the key cap 131 through the sensor adhesive 112, and may specifically be adhered to the bottom of the accommodating cavity 1311. The sensor laminating adhesive 112 may be glue, tape, or film.

The size of the ultrasonic sensor 111 is smaller than the size of the bottom of the accommodating cavity 1311, the ultrasonic sensor 111 is adhered to the middle area of the bottom of the accommodating cavity 1311, and after the first circuit board 121 is adhered to the edge of the accommodating cavity 1311, the LEDs 122 are distributed around the ultrasonic sensor 111, that is, no shielding object exists between the LEDs 122 and the accommodating cavity 1311, so that light emitted by the LEDs 122 can be transmitted into the supporting body 1314. The arrows in fig. 5 indicate the direction of conduction of the light emitted by the LEDs 122.

After the ultrasonic sensor 111 is stuck to the bottom of the housing cavity 1311, the distance between the contact surface of the key cap 131 (the outer side surface of the light shield 1313) and the ultrasonic sensor 111 is less than or equal to 2mm.

In the embodiment of the utility model, the ultrasonic sensor 111 is adhered to the bottom of the accommodating cavity 1311, so that a small distance is formed between the contact surface of the ultrasonic sensor 111 and the key cap 131, and the ultrasonic sensor 111 can effectively collect fingerprint signals and heart rate signals of fingers placed on the contact surface of the key cap 131, thereby ensuring the accuracy of fingerprint detection and heart rate detection. The ultrasonic sensor 111 is located in the accommodating chamber 1311, and the ultrasonic sensor 111 does not occupy the height of the biometric detection device 100 alone, so that the biometric detection device 100 has a thinner thickness, and the installation space required for deployment of the biometric detection device 100 is reduced, so that the applicability of the biometric detection device 100 can be improved. The LEDs 122 are distributed around the ultrasonic sensor 111, so that light emitted by the LEDs 122 can be smoothly conducted into the support 1314, and the support 1314 can conduct light to the first identification pattern 1315, so that the first identification pattern 1315 appears. The first identification pattern 1315 is located in the middle area of the light shield 1313, that is, the first identification pattern 1315 is located directly above the ultrasonic sensor 111, and the LEDs 122 are distributed around the ultrasonic sensor 111, so that the light emitted by different LEDs 122 is uniformly distributed in the support 1314, and thus the first identification pattern 1315 can be displayed with uniform brightness, and the aesthetic property of the identification pattern displayed by the biological feature detection device 100 is ensured.

FIG. 6 is a schematic cross-sectional view of a biometric sensing device in accordance with yet another embodiment of the present utility model. As shown in fig. 6, the touch assembly 130 includes a transparent cover plate 132, and the light emitting assembly 120 includes a first circuit board 121, a plurality of LEDs 122, and a light guide plate 123.

At least a part of the area of the lower surface of the transparent cover plate 132 is provided with a second shading layer 1321, the second shading layer 1321 is provided with a second light hole, and a second transparent identification pattern 1322 is printed in the second light hole. The first circuit board 121 is provided with a through hole 1211, and a plurality of LEDs 122 are distributed around the edge of the through hole 1211. The upper surface of the light guide plate 123 is adhered to the lower surface of the transparent cover 132 by the light guide plate adhesive 124, and the second light shielding layer 1321 and the second logo pattern 1322 are sandwiched between the light guide plate 123 and the transparent cover 132. The ultrasonic sensor 111 included in the ultrasonic detection module 110 is adhered to the lower surface of the light guide plate 123 through the sensor adhesive 112. Along the axial direction of the through hole 1211, the ultrasonic sensor 111 is at least partially located inside the through hole 1211, and the light guide plate 123 is at least partially located outside the through hole 1211.

The light guide plate 123 can conduct the light emitted by the LED122 to the second light hole, so that at least part of the light emitted by the LED122 is transmitted through the area of the transparent cover 132 where the second identification pattern 1322 is located, and the second identification pattern 1322 is revealed.

The transparent cover 132 may be made of transparent glass, plastic, etc., and the thickness of the transparent cover 132 is greater than or equal to 0.2mm. A light transmissive logo pattern is silk-screened on a region (region where the second light transmitting hole is located) where light transmission is required on the lower surface of the transparent cover plate 132, and a second logo pattern 1322 is formed, and the second logo pattern 1322 may be a fingerprint pattern. The second light shielding layer 1321 is formed by screen printing or spraying light shielding ink on other areas on the lower surface of the transparent cover plate 132. The light emitted by the LED122 may pass through the transparent cover 132 through the area where the second identification pattern 1322 is located, but cannot pass through the area where the second light shielding layer 1321 is located on the transparent cover 132, so that the second identification pattern 1322 is revealed.

Since the light emitted by the LED122 needs to pass through the light guide plate adhesive 124 to reach the second identification pattern 1322, the light guide plate adhesive 124 ensures that the light emitted by the LED122 can penetrate and can transmit the light emitted by the LED122, and the light guide plate adhesive 124 can be an OCA optical adhesive (Optically Clear Adhesive) film, a liquid optical adhesive, or the like.

The light guide plate 123 has the functions of guiding and homogenizing light, and the light guide plate 123 can change the propagation direction of the light emitted from the LED122, so that the light emitted from the LED122 passes through the second identification pattern 1322 on the lower surface of the transparent cover 132, and then passes through the transparent cover 132 from the lower surface of the transparent cover 132, thereby making the second identification pattern 1322 appear. The arrows in fig. 6 indicate the conduction paths of the light emitted by the LEDs 122. The material of the light guide plate 123 may be PC, PMMA, PET, etc., and in order to ensure the light guiding effect of the light guide plate 123, the thickness of the light guide plate 123 is greater than or equal to 0.2mm.

The sensor adhesive 112 is used for bonding the light guide plate 123 and the ultrasonic sensor 111, and the sensor adhesive 112 may be glue, tape, or adhesive film. A second shading layer 1321, a light guide plate laminating adhesive 124, a light guide plate 123 and a sensor laminating adhesive 112 are sequentially overlapped between the transparent cover plate 132 and the ultrasonic sensor 111, so that the distance between the upper surface of the ultrasonic sensor 111 and the upper surface of the transparent cover plate 132 is less than or equal to 2mm in order to ensure that the ultrasonic sensor 111 can accurately collect fingerprint signals and heart rate signals.

Along the axial direction of the through-hole 1211, the ultrasonic sensor 111 is at least partially located within the through-hole 1211, and the light guide plate 123 is at least partially located within the through-hole 1211. The ultrasonic sensor 111 is at least partially located in the through hole 1211, which can reduce the space occupied by the ultrasonic sensor 111 in the biological feature detection device 100, thereby enabling the biological feature detection device 100 to have a smaller thickness, facilitating the installation of the biological feature detection device 100 in an electronic device, and improving the applicability of the biological feature detection device 100. The light guide plate 123 is at least partially located outside the through hole 1211, so that the light emitted by the LED122 can be incident into the light guide plate 123, and the light emitted by the LED122 is conducted to the area where the second identification pattern 1322 is located through the light guide plate 123, so that the second identification pattern 1322 can be normally displayed.

In the embodiment of the present utility model, the transparent cover plate 132, the light guide plate 123 and the ultrasonic sensor 111 adopt a laminated structure, and the ultrasonic sensor 111 is at least partially located in the through hole 1211 formed in the first circuit board 121, so that the overall structure of the biological feature detection device 100 is more compact, the thickness of the biological feature detection device 100 is reduced, and meanwhile, the space occupied by the biological feature detection device 100 is reduced, so that the biological feature detection device 100 can be applied to small-sized, light, thin and compact electronic equipment, and the biological feature detection device 100 is ensured to have stronger applicability.

In one possible implementation, as shown in fig. 6, the transparent cover 132 may be a touch area and/or a display area in an electronic device in which the biometric sensing device 100 is located.

In the embodiment of the present utility model, when the biometric detection apparatus 100 is deployed in an electronic device such as a notebook computer, the transparent cover 132 included in the biometric detection apparatus 100 may be a panel of a touch area and/or a display area in the electronic device, for example, may be a functional touch and display area carrier disposed in an upper area of a keyboard, and the panel of the touch area and/or the display area in the electronic device is used as the transparent cover 132 of the biometric detection apparatus 100, so that the biometric detection apparatus 100 is integrated into the overall design of the electronic device, thereby improving the aesthetic property of the electronic device and reducing the weight of the biometric detection apparatus 100.

In one possible implementation, as shown in fig. 6, the first circuit board 121 may be a circuit board in an electronic device in which the biometric detection apparatus 100 is located.

In the embodiment of the present utility model, when the biometric detection device 100 is deployed in an electronic apparatus such as a notebook computer, the first circuit board 121 included in the biometric detection device 100 may be a circuit board of a touch area and/or a display area in the electronic apparatus, for example, may be a circuit board of a functional touch and display area disposed in an upper area of a keyboard, and the circuit board of the touch area and/or the display area in the electronic apparatus is used as a circuit board of an LED in the biometric detection device 100, so that it is not necessary to separately provide the biometric detection device 100 with the circuit board of the LED, which reduces the space occupied by the biometric detection device 100, and facilitates installation of the biometric detection device 100 in the electronic apparatus.

In one possible implementation, as shown in fig. 5 and 6, the sensor laminating adhesive 112 includes a conductive foil and double-sided adhesive tapes adhered to both sides of the conductive foil, wherein the double-sided adhesive tape on one side of the conductive foil is adhered to the ultrasonic sensor 111, and the double-sided adhesive tape on the other side of the conductive foil is adhered to the bottom of the accommodating cavity 1311 or the lower surface of the light guide plate 123, so that the ultrasonic sensor 111 can be firmly adhered to the bottom of the accommodating cavity 1311 or the lower surface of the light guide plate 123.

In one possible implementation, the conductive foil may send a proximity signal to the processing unit when the finger approaches the outer side of the touch assembly, so that the processing unit controls the ultrasonic detection module 110 to switch to the working state after receiving the proximity signal.

The sensor laminating adhesive 112 includes two layers of double-sided adhesive tape and a conductive foil sandwiched between the two layers of double-sided adhesive tape, through which the fixing of the ultrasonic sensor 111 can be achieved, the conductive foil can be used as a touch electrode, and when a finger approaches the outer side surface of the touch assembly 130, the conductive foil generates a proximity signal in the form of an electrical signal and transmits the proximity signal to the processing unit. The conductive foil is connected to the processing unit by wires such that the conductive foil transmits a proximity signal to the processing unit.

The conductive foil is a foil made of conductive metal, for example, the conductive foil may be a copper foil, a silver foil, a nickel alloy foil, or the like.

In the embodiment of the present utility model, the function of finger proximity sensing can be achieved by disposing the conductive foil in the sensor adhesive 112, and when the finger proximity touch assembly 130 is sensed, the processing unit can switch the ultrasonic detection module 110 from the non-operating state to the operating state for fingerprint detection and heart rate detection, and when the finger proximity touch assembly 130 is not sensed, the processing unit makes the ultrasonic detection module 110 enter the non-operating state, thereby reducing the power consumption of the biological feature detection device 100 and improving the service life of the biological feature detection device 100.

In one possible implementation, the conductive foil in the sensor paste 112 may be copper foil, i.e., the sensor paste 112 is copper foil paste.

In the embodiment of the utility model, since copper has good ductility and conductivity, and copper foil is used as the conductive foil in the sensor laminating adhesive 112, the conductive foil can have thinner thickness and flexibility, and can sensitively sense the proximity of the finger to the touch assembly 130, thereby ensuring lower cost of the biological feature detection device 100 while realizing the proximity sensing function of the finger.

Fig. 7 is a schematic view of a biometric sensing device including a key cap according to an embodiment of the present utility model, and fig. 8 is a schematic view of a biometric sensing device including a transparent cover according to an embodiment of the present utility model. As shown in fig. 7 and 8, the ultrasonic detection module 110 includes an ultrasonic sensor 111, a second circuit board 113, and a connector 114.

The ultrasonic sensor 111 and the connector 114 are electrically connected through the second circuit board 113, and the connector 114 is used for electrically connecting the processing unit. The ultrasonic sensor 111 may detect the biometric signal and transmit the biometric signal to the connector 114 through the second circuit board 113, and the connector 114 may transmit the received biometric signal to the processing unit.

In the embodiment of the utility model, the ultrasonic sensor 111 can detect the biological characteristic signal, the biological characteristic signal can be a cypress fingerprint signal and a heart rate signal, after the biological characteristic signal is sent to the processing unit, the processing unit can detect the fingerprint according to the fingerprint signal and detect the heart rate according to the heart rate signal, so that the fingerprint detection function and the heart rate detection function can be realized through one ultrasonic sensor 111, the number of devices required for detecting the fingerprint and the heart rate is reduced, the whole biological characteristic detection device 100 has a simple structure, the occupied installation space is smaller, and the design freedom degree of the electronic equipment is larger.

In one possible implementation, as shown in fig. 7 and 8, the second circuit board 113 may be a flexible circuit board.

In the embodiment of the present utility model, since the ultrasonic sensor 111 is connected to the connector 114 through the second circuit board 113, the connector 114 is used for electrically connecting to a processing unit, and the processing unit is disposed on a motherboard of an electronic device, in order to facilitate the electrical connection between the connector 114 and the processing unit, the second circuit board 113 is a flexible circuit board, so that the installation position of the biological feature detection device 100 in the electronic device has a higher degree of freedom, and the applicability of the biological feature detection device 100 is improved.

It should be noted that, fig. 7 and fig. 8 respectively show the biometric sensing device 100 with two structures, the touch assembly 130 in the biometric sensing device 100 shown in fig. 7 is the key cap 131, the touch assembly 130 in the biometric sensing device 100 shown in fig. 8 is the transparent cover 132, fig. 7 and fig. 8 respectively show the lamination relationship of the components included in the biometric sensing device 100, the structure and connection relationship of the components in the biometric sensing device 100 shown in fig. 7 can be referred to the description of fig. 3, 4A, 4B and 5 in the above embodiment, and the structure and connection relationship of the components in the biometric sensing device 100 shown in fig. 8 can be referred to the description of fig. 6 in the above embodiment, which will not be repeated here.

Based on the biological feature detection device 100 provided by the embodiments of the present utility model, fingerprint detection and heart rate detection are performed by using one ultrasonic sensor 111, so that the number of devices required for detecting fingerprints and heart rates is reduced, and the whole biological feature detection device 100 has a simple structure, occupies a small installation space, and enables the design freedom of electronic equipment to be larger. When the ultrasonic sensor 111 is used for fingerprint detection, heart rate can be detected simultaneously, and the heart rate detection can assist in fingerprint detection, so that invasion of fake fingerprints is prevented, and safety and stability of electronic equipment are improved. Through the light signal generated by the light emitting component 120, the user can quickly find the position of the biological feature detection device 100 in the dark environment, so that the use experience of the user is improved. The penetrating power of ultrasonic wave is stronger, can pierce through the apron within 2mm for biological feature detection device 100's structural strength is better, can make the electronic equipment of installation biological feature detection device 100 have higher degree of freedom of design simultaneously.

Electronic equipment

The embodiment of the utility model also provides an electronic device, which comprises the biological feature detection device 100 in any of the above embodiments. The electronic device may be a mobile phone, a notebook computer, a tablet computer, an attendance machine, and other suitable devices. Taking an electronic device as an example of a notebook computer, fig. 9 and 10 show two examples of the electronic device. As shown in fig. 9, when the structure of the biometric sensing device 100 is as shown in fig. 7, the biometric sensing device 100 may be disposed at the upper portion of the keyboard region, the key region 902, or the palm rest region 903 of the notebook computer. As shown in fig. 10, when the structure of the biometric sensing device 100 is as shown in fig. 8, the biometric sensing device 100 may be disposed in a touch/display area 1001 at the upper portion of the keyboard.

In order to illustrate the deployable area of the biometric sensing device 100, a plurality of biometric sensing devices 100 are shown in the electronic device shown in fig. 9, and one or more biometric sensing devices 100 may be included in an actual electronic device product.

It should be further noted that, since the electronic device is a specific application product of the biological feature detection apparatus 100, the structure and connection relationship of the biological feature detection apparatus 100 in the electronic device can be seen from the description in the foregoing embodiment of the biological feature detection apparatus, and the embodiment of the electronic device has the beneficial effects corresponding to the biological feature detection apparatus 100, which are not described herein again.

It should be understood that the specific examples of the embodiments of the present utility model are intended to facilitate a better understanding of the embodiments of the present utility model by those skilled in the art, and are not intended to limit the scope of the embodiments of the present utility model.

It is to be understood that the terminology used in the embodiments of the utility model and in the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the utility model. For example, as used in embodiments of the utility model and in the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Those of ordinary skill in the art will appreciate that the elements of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the elements and steps of the examples have been described above generally in terms of functionality for clarity of understanding of interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present utility model.

In the several embodiments provided in the present utility model, it should be understood that the disclosed system and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices, or elements, or may be an electrical, mechanical, or other form of connection.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present utility model.

In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present utility model is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present utility model. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (13)

1. A biometric sensing device, comprising: the device comprises an ultrasonic detection module, a light-emitting assembly and a touch assembly;

the ultrasonic detection module is used for detecting a biological characteristic signal through the touch assembly and sending the biological characteristic signal to the processing unit so that the processing unit can perform fingerprint detection and/or heart rate detection according to the biological characteristic signal;

the touch component is a specific area of a key or a shell of the electronic equipment where the biological characteristic detection device is located;

the light-emitting component is used for generating a light signal through the touch component, wherein the light signal is at least used for indicating the working state of the ultrasonic detection module.

2. The apparatus of claim 1, wherein the light assembly comprises: a first circuit board and a plurality of LEDs;

the LEDs are electrically connected to the first circuit board, and the first circuit board is used for supplying power to the LEDs;

the side surface of the first circuit board, on which the LEDs are mounted, is opposite to the touch assembly.

3. The apparatus of claim 2, wherein the touch assembly comprises: a key cap;

The inner side of button cap is provided with holds the chamber, install on the first circuit board the side of LED pass through the lamp plate laminating glue with hold the edge bonding in chamber, a plurality of LEDs are located hold the intracavity.

4. A device according to claim 3, wherein the key cap comprises: a light shield and a support;

the inner side surface of the light shield is provided with a first light shield layer, a first light hole is formed in the first light shield layer, and a first light-transmitting identification pattern is printed in the first light hole;

the support body is made of a light guide material, the outer side face of the support body is attached to the inner side face of the light shield, the first light shield layer and the first identification pattern are clamped between the support body and the light shield, and the inner side face of the support body is provided with the accommodating cavity;

the support body is used for conducting light emitted by the LED to the first light holes so that at least part of the light emitted by the LED is transmitted through the area where the first identification pattern is located on the light shield, and the first identification pattern is displayed.

5. The device of claim 4, wherein the ultrasonic detection module comprises an ultrasonic sensor, the ultrasonic sensor is adhered to the bottom of the accommodating cavity through a sensor laminating adhesive, and the plurality of LEDs are distributed around the ultrasonic sensor.

6. The apparatus of claim 2, wherein the touch assembly comprises a transparent cover plate, and the light emitting assembly further comprises a light guide plate;

a second shading layer is arranged in at least part of the area of the lower surface of the transparent cover plate, a second light hole is formed in the second shading layer, and a second transparent identification pattern is printed in the second light hole;

the first circuit board is provided with a through hole, and the LEDs are distributed around the edge of the through hole;

the upper surface of the light guide plate is adhered to the lower surface of the transparent cover plate through light guide plate laminating adhesive, and the second shading layer and the second identification pattern are clamped between the light guide plate and the transparent cover plate;

the ultrasonic sensor is adhered to the lower surface of the light guide plate through sensor adhesive bonding, is at least partially positioned in the through hole along the axial direction of the through hole, and is at least partially positioned outside the through hole;

the light guide plate is used for conducting light emitted by the LED to the second light holes so that at least part of the light emitted by the LED is transmitted through the area where the second identification pattern is located on the transparent cover plate, and the second identification pattern is displayed.

7. The apparatus of claim 6, wherein the device comprises a plurality of sensors,

the transparent cover plate comprises a touch control area and/or a display area in the electronic equipment where the biological feature detection device is located;

and/or the number of the groups of groups,

the first circuit board comprises a circuit board in the electronic equipment where the biological feature detection device is located.

8. The device of claim 5 or 6, wherein the sensor-attaching adhesive comprises a conductive foil and double-sided adhesive tapes adhered to both sides of the conductive foil, and the double-sided adhesive tapes on one side of the conductive foil are adhered to the ultrasonic sensor.

9. The apparatus of claim 8, wherein the device comprises a plurality of sensors,

and the conductive foil is used for sending a proximity signal to the processing unit when a finger approaches the outer side surface of the touch assembly, so that the processing unit controls the ultrasonic detection module to switch to a working state after receiving the proximity signal.

10. The device of claim 8, wherein the conductive foil comprises a copper foil.

11. The apparatus of claim 5 or 6, wherein the ultrasonic detection module comprises: the ultrasonic sensor, the second circuit board and the connector;

The ultrasonic sensor is electrically connected with the connector through the second circuit board, and the connector is used for being electrically connected with the processing unit;

the ultrasonic sensor is used for detecting the biological characteristic signal and transmitting the biological characteristic signal to the connector through the second circuit board;

the connector is used for transmitting the received biological characteristic signals to the processing unit.

12. The apparatus of claim 11, wherein the second circuit board comprises a flexible circuit board.

13. An electronic device, comprising: a biometric detection device as in any one of claims 1 to 12.