Biometric recognition device and electronic device

Abstract

The present application discloses a biometric recognition device and an electronic device. Among them, the biometric recognition device includes: a lens module, which includes a first lens group and a second lens group, and the optical axis directions of the first lens group and the second lens group are not parallel; a sensor, which is disposed opposite to the first lens group; a reflector, which is disposed on one side of the exit direction of the second lens group, and the reflector is used to receive the light that passes through the second lens group and enters; among them, when the biometric recognition device is in the first incident state, after the light passes through the second lens group, it enters the sensor through the reflector; when the biometric recognition device is in the second incident state, the light passes through the first lens group and then enters the sensor. In the technical solution of the present application, lens groups with two different light incident directions can be set. When the biometric recognition device is in different incident states, the same sensor is used to sense the light incident from different directions, saving the layout space of additional sensors and also improving the diversity of biometric recognition.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to a biometric recognition device and an electronic device. Background Art

[0002] Currently, for electronic products, in order to ensure the use safety of users when using electronic products, biometric recognition methods such as fingerprint recognition or face recognition are usually adopted. However, for existing fingerprint recognition devices or face recognition devices, they need to limit the position where the recognition object is located. For the overall single recognition device, it can only achieve recognition at a single specified position, which will bring certain inconvenience to users during use. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] This application aims to provide a biometric recognition device and an electronic device. By setting lens groups with two different light incident directions, when the biometric recognition device is in different incident states, the same sensor can be used to sense the light incident from different directions, saving the layout space of additional sensors and improving the diversity of biometric recognition at the same time.

[0005] To achieve the above object, the biometric recognition device provided in the first aspect of this application includes: a first lens group and a second lens group, the optical axis directions of the first lens group and the second lens group are not parallel; a sensor, disposed opposite to the first lens group; a reflector, disposed on one side of the exit direction of the second lens group, and the reflector is used to receive the light passing through the second lens group and entering; wherein, when the biometric recognition device is in the first incident state, after the light passes through the second lens group, it enters the sensor through the reflector; when the biometric recognition device is in the second incident state, the light passes through the first lens group and then enters the sensor.

[0006] According to an embodiment of the biometric recognition device provided by the present application, it includes: a first lens group, a second lens group, and a sensor. The two lenses will respectively capture biometric features under different incident states, so that biometric recognition at different positions can be achieved by only using one sensor, improving the space utilization rate inside the overall device. Specifically, due to the different optical axis directions of the first lens group and the second lens group, biometric features in different directions can be recognized. When the biometric recognition device is in the first incident state, light enters through the second lens group and then enters the sensor under the action of the reflector. The sensor is used to analyze the light for subsequent imaging. Similarly, when the biometric recognition device is in the second incident state, the light directly enters the sensor after passing through the first lens group. The optical path in the second incident state is relatively direct and there is no reflection. It should be noted that due to the different incident states of the biometric recognition device and the differences in the propagation paths of light inside the biometric recognition device, biometric features can be recognized in different directions.

[0007] Among them, in order to ensure the recognition accuracy, the light entering from the first lens group and the light entering from the second lens group can only be adjusted by controlling the incident light. At the same time, only the light entering from one lens group is allowed to be directed to the sensor.

[0008] It should be added that the first lens group and the sensor are relatively arranged to ensure that the light passing through the first lens group will be imaged on the sensor for subsequent processing.

[0009] The second lens group and the reflector are relatively arranged. The position of the reflector should not only ensure that the light emitted from the second lens group can be received, but also ensure that the reflected angle can direct the light to the sensor.

[0010] Among them, the number of lenses in the first lens group can be one or multiple.

[0011] Similarly, the number of lenses in the second lens group can be one or multiple.

[0012] It can be understood that the light here can be the light that is reflected back to the first lens group or the second lens group after hitting the biometric feature, thus greatly improving the overall usage scenario of the biometric recognition device.

[0013] Among them, the specific biometric recognition can be fingerprint recognition or face recognition.

[0014] Second aspect, an embodiment of the present application provides an electronic device, including: a first folding body and a second folding body rotatably connected; a folding screen disposed on one side of the first folding body and the second folding body; a secondary screen disposed on the other side of the first folding body opposite to the folding screen; a biometric recognition device in any of the above embodiments, disposed on the first folding body; wherein, a second lens group of the biometric recognition device is disposed on the side of the first folding body close to the folding screen.

[0015] The electronic device provided by the second aspect of the present application includes a first folding body, a second folding body, and a biometric recognition device disposed on the first folding body. Among them, a folding screen is disposed on one side of the two folding bodies as the main screen, and based on the rotatable connection between the first folding body and the second folding body, the folding and unfolding of the screen can be realized. In addition, a secondary screen is further disposed on the other side of the first folding body. On this basis, by disposing the biometric recognition device on the first folding body, regardless of whether the electronic device is in a folded or unfolded state, biometric recognition can be performed through the position of the corresponding lens group. It should be emphasized that the second lens group is disposed on the side of the first folding body close to the folding screen, so that the folding screen can serve as a light source. When the biometric is close to the folding screen, the emitted light can be reflected into the second lens group and then reflected into the sensor again under the action of the reflecting member. On this basis, since the electronic device includes the biometric recognition device in the first aspect embodiment of the present application, it has the beneficial effects of any of the above embodiments and will not be elaborated here.

[0016] Among them, the electronic device can be a smart phone, a tablet, a smart watch, a smart bracelet, or other devices with biometric recognition requirements.

[0017] The additional aspects and advantages of the present application will become apparent in the following description section or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structural schematic diagram of a biometric recognition device according to an embodiment of the present application is shown;

[0019] Figure 2 The structural schematic diagram of a biometric recognition device according to an embodiment of the present application is shown;

[0020] Figure 3 The structural schematic diagram of a biometric recognition device according to an embodiment of the present application is shown;

[0021] Figure 4 The structural schematic diagram of a biometric recognition device according to an embodiment of the present application is shown;

[0022] Figure 5 Shows a schematic structural diagram of a biometric recognition device according to an embodiment of the present application;

[0023] Figure 6 Shows a schematic structural diagram of an electronic device according to an embodiment of the present application;

[0024] Figure 7 Shows a schematic structural diagram of an electronic device according to an embodiment of the present application.

[0025] Among them, Figures 1 to 7 The corresponding relationship between the reference numerals and the component names in the figure is as follows:

[0026] 100: Biometric recognition device; 102: First lens group; 104: Second lens group; 106: Sensor; 108: Reflective member; 110: Planar lens; 112: Spacing structure; 114: Auxiliary light source; 118: Lens housing; 200: Electronic device; 2022: First folding body; 2024: Second folding body; 204: Folding screen; 206: Sub-screen; 208: First clamping structure; 210: Second clamping structure; 212: Detection circuit; 214: Processor. Detailed implementation manners

[0027] Hereinafter, embodiments of the present application will be described in detail. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0028] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] The electronic device provided in the embodiment of the present application is mainly used for electronic devices, such as mobile terminals such as mobile phones, wearable devices, tablet computers, laptop computers, mobile computers, handheld game consoles, video recorders, and video cameras, etc. Of course, it may not be limited to electronic devices, but may be applied to other devices that require biometric identification.

[0031] The following refers to Figures 1 to 7 Describe a biometric identification device and an electronic device provided according to an embodiment of the present application.

[0032] As Figure 1 and Figure 2 As shown, an embodiment of the present application proposes a biometric identification device 100, including: a first lens group 102 and a second lens group 104, the optical axis directions of the first lens group 102 and the second lens group 104 are not parallel; a sensor 106, disposed opposite to the first lens group 102; a reflector 108, disposed on one side of the exit direction of the second lens group 104, the reflector is used to receive the light passing through the second lens group; wherein, when the biometric identification device is in the first incident state, after the light passes through the second lens group 104, it is reflected by the reflector 108 and enters the sensor 106; when the biometric identification device is in the second incident state, the light passes through the first lens group 102 and then enters the sensor 106.

[0033] According to an embodiment of the biometric recognition device 100 provided by the present application, it includes: a first lens group 102, a second lens group 104, and a sensor 106. Among them, the two lenses will respectively capture biometric features under different incident states, so that biometric recognition at different positions can be achieved only by using one sensor 106, improving the space utilization rate inside the overall device. Specifically, the first lens group 102 and the second lens group 104 with non-parallel optical axis directions can recognize biometric features in different directions. When the biometric recognition device is in the first incident state, light enters the lens module through the second lens group 104, and then enters the sensor 106 under the action of the reflector 108. The sensor 106 is used to analyze the light for subsequent imaging. Similarly, when the biometric recognition device is in the second incident state, the light directly enters the sensor 106 after passing through the first lens group 102. The optical path in the second incident state is relatively direct and there is no reflection. It should be noted that due to the different incident states of the biometric recognition device and the differences in the propagation paths of light in the biometric recognition device 100, biometric recognition can be achieved in different directions.

[0034] Among them, in order to ensure the recognition accuracy, the light rays incident from the first lens group 102 and the light rays incident from the second lens group 104 can only be adjusted by control to achieve the adjustment of the incident light. At the same time, only the light rays incident from one lens group are allowed to be directed to the sensor 106.

[0035] It should be added that the first lens group 102 and the sensor 106 are arranged opposite to each other to ensure that the light passing through the first lens group 102 will be imaged on the sensor 106 for subsequent processing.

[0036] The second lens group 104 and the reflector 108 are arranged opposite to each other. The position of the reflector 108 should not only ensure that the light rays emitted from the second lens group 104 can be received, but also ensure that the reflected angle can direct the light rays to the sensor 106.

[0037] Among them, the number of lenses in the first lens group 102 can be one or multiple.

[0038] Similarly, the number of lenses in the second lens group 104 can be one or multiple.

[0039] It can be understood that the light here can be the light that is reflected back to the first lens group or the second lens group after hitting the biometric feature, thus greatly improving the overall usage scenario of the biometric recognition device 100.

[0040] Among them, the specific biometric recognition can be fingerprint recognition or face recognition.

[0041] In a specific embodiment, the first lens group 102 can perform fingerprint recognition, and the second lens group 104 can perform face recognition.

[0042] In another specific embodiment, the second lens group 104 can perform fingerprint recognition, and the first lens group 102 can perform face recognition.

[0043] In another specific embodiment, both the first lens group 102 and the second lens group 104 can perform fingerprint recognition.

[0044] In another specific embodiment, both the first lens group 102 and the second lens group 104 can perform face recognition.

[0045] Further, as Figure 4 shown, it further includes: a planar lens 110, which is disposed opposite to the sensor 106, and the planar lens 110 is disposed on the side of the first lens away from the sensor 106. After the light passes through the planar lens, it enters the sensor through the first lens group.

[0046] By disposing the planar lens 110 on the other side of the first lens relative to the sensor 106, and the planar lens 110 and the sensor 106 are in a relative positional relationship, under the action of the planar lens 110, the light is not refracted or reflected, ensuring the propagation effect. Of course, since the planar lens 110 is the outermost lens, that is, the lens that first contacts the light, the planar lens 110 can play a certain protective effect on the entire device.

[0047] Further, in the case of using the planar lens for framing, after the light passes through the planar lens, it enters the sensor through the first lens group.

[0048] Further, it further includes: a spacer structure 112, which is disposed on the planar lens 110. The spacer structure 112 is used to space apart the object to be recognized from the planar lens 110 so that the light is reflected by the object to be recognized and then enters the planar lens 110.

[0049] By further providing the spacer structure 112 on the planar lens 110 to facilitate separating the object to be recognized, it can be understood that when the object to be recognized moves towards the planar lens 110, under the action of the spacer structure 112, it will physically prevent further penetration. At this time, since there is a distance between the object to be recognized and the planar lens 110, the light will be directed towards the object to be recognized and reflected back to the planar lens 110, so as to facilitate biometric recognition of the object to be recognized under the action of the sensor 106.

[0050] Further, as Figure 5As shown in the figure, it further includes: an auxiliary light source 114, which is arranged on the side of the second lens group 104 away from the reflector 108. The auxiliary light source 114 is used to be powered on to provide light when the biometric recognition device is in the first incident state.

[0051] By arranging the auxiliary light source 114 on one side of the second lens group 104, it can emit light when the lens module is in a specific incident state to achieve a supplementary light effect, thereby improving the recognition accuracy. Specifically, the auxiliary light source 114 is arranged on the side of the second lens group 104 away from the reflector 108, that is, on the outer side of the entire lens module. Thus, when the sensor 106 receives the light from the second lens group 104, it can ensure that the light will propagate normally, facilitating the recognition of biometric features.

[0052] Furthermore, as Figure 3 shown in the figure, it includes: a lens housing 118, and the first lens group and the second lens group are arranged inside the lens housing 118; among them, the first lens group 102 and the sensor 106 are arranged inside the lens housing 118 along the first direction of the lens housing 118.

[0053] By arranging the lens housing 118, it can play a role in protecting the propagation of the light path, preventing other structures from interfering with the propagation path of the light, ensuring the imaging effect, and improving the recognition accuracy of biometric features.

[0054] It should also be added that the first lens group 102 and the sensor 106 are arranged along the first direction inside the lens housing 118, so that when the light path propagates linearly, it can enter through one side of the lens housing 118, and directly enter the sensor 106 after passing through the first lens group 102.

[0055] Furthermore, the second lens group 104 and the reflector 108 are arranged on the two side walls of the lens housing 118 arranged along the second direction, and the first direction is perpendicular to the second direction.

[0056] The setting position of the second lens group 104 is different from that of the first lens group 102. It and the reflector 108 are respectively arranged on the two side walls in another direction of the lens housing 118. Since the first direction and the second direction are perpendicular, it can ensure that in different incident states of the biometric recognition device, a corresponding more convenient biometric recognition method can be found, greatly improving the user experience.

[0057] In a specific embodiment, a two-way fingerprint recognition system is provided, as Figure 6 and Figure 7As shown, based on a lens module, a two-way fingerprint recognition solution can be realized for a single camera module, which reduces the number of devices and provides a novel side fingerprint recognition solution. The two-way fingerprint recognition system includes a plane lens (i.e., a plane lens 110), a side lens (i.e., a first lens group 102), an under-screen recognition lens (i.e., a second lens group 104), a fingerprint reflector (i.e., a reflector 108), a photosensitive sensor 106 (i.e., a sensor 106), a main screen (i.e., a folding screen 204), a secondary screen 206, a positioning block (i.e., a spacing structure 112), a folding screen shaft, a pop-up buckle (i.e., a first clamping structure 208), a sliding buckle (i.e., a second clamping structure 210), and a detection spring. The plane lens is mainly used to prevent dust from entering the lens module. At the same time, the side lens of the lens module can be electrically controlled to achieve position changes in the module to achieve focus in different scenes. When the screen is fully unfolded and enters the under-screen fingerprint recognition mode, light enters from the under-screen recognition lens, is reflected by the fingerprint reflector, and is finally imaged on the photosensitive sensor 106. This embodiment requires a folding screen solution based on the main screen and the auxiliary screen 206. When the screen is in a folded state, the identification solution needs a positioning block to assist, and a gap needs to be formed between the finger and the plane lens so that the light is projected onto the finger to form an image. The folding screen shaft connects the first folding body 2022 and the second folding body 2024, and plays a role of rotation. The closed slope is to cooperate with the folding screen solution to seal the light on the bottom surface, and the other surfaces can use a similar design to seal the light path. The pop-up buckle is a mechanical structure. In order to fix the state when it is unfolded, the buckle is made of metal material, which provides convenience for detecting and identifying circuits. The main function of the sliding buckle is to pull the pop-up buckle so that the buckle can be retracted, or it can be retracted into the inside of the mobile phone when it is in a folded state. The main function of the detection shrapnel is to detect whether the screen is fully unfolded. The detection shrapnel is pulled up to the power supply through a resistor, and the GPIO port detects the level state of the pin at the same time. When the conductive buckle is inserted, it is connected to GND through the buckle. At this time, the GPIO port detects that the pin is at a low level, and determines that the screen is fully unfolded, thus entering the logic of under-screen fingerprint recognition. Otherwise, the pin is at a high level and the under-screen fingerprint recognition solution is not enabled.

[0058] Among them, the entire recognition system will be placed on the lower half of the foldable phone to facilitate the user's operating habits.

[0059] As for the principle of this specific embodiment, when the folding phone is in a fully unfolded state, the optical fingerprint under the screen will be controlled for identification. When in the unfolded screen fingerprint identification state, the positioning block and the folding of the folding screen cause no light to enter the side lens. After the unfolded state detection circuit 212 detects that the screen is fully unfolded, the corresponding GPIO port detects a low level, and the corresponding area of the main screen will provide bright light to provide a light source when detection is needed, thereby performing optical fingerprint identification under the screen. There needs to be a certain displacement deviation between the bright light position and the actual position of the lens. After the reflected light enters the lens, the fingerprint reflector in the module reflects the light information into the photosensitive sensor 106.

[0060] It should be noted that the light source of the mobile phone in the unfolded state is provided by the screen, and the specific placement needs to be determined according to the position of the under-screen recognition camera lens. The actual fingerprint recognition area needs to be staggered a certain distance from the light source to ensure that the light can be incident on the finger and reflected. The light source can be the screen, or an external light source, as long as it can irradiate the finger and reflect back to the light sensor 106.

[0061] When the foldable phone is in a folded state, which includes partial folding and full folding, the finger is placed on the positioning block. The positioning block is not a completely closed device. The side can pass light, leaving a gap with the plane lens, allowing natural light to be projected onto the finger, allowing the lens to shoot the finger area. In order to achieve close-up shooting of finger fingerprints, it is necessary to adjust the position of the focusing lens to make the image clear. After obtaining the color image, the software algorithm is used to convert the image into a grayscale image, and then identify the finger fingerprint. Of course, a flash can also be placed on the side, and it will automatically flash when the overall brightness of the entire screen is low. (Software is required) The flash fill light solution is not within the scope of protection of this patent.

[0062] In order to be able to take photos in different environments, you can consider adding an LED flash to assist in taking photos.

[0063] like Figure 6 and Figure 7As shown in the figure, another embodiment of the present application provides an electronic device 200, which includes a first folding body 2022, a second folding body 2024, and a biometric recognition device 100 disposed on the first folding body 2022. Among them, a folding screen 204 is disposed on one side of the two folding bodies as the main screen, and based on the rotational connection between the first folding body 2022 and the second folding body 2024, the folding and unfolding of the screen can be realized. In addition, a secondary screen 206 is further disposed on the other side of the first folding body 2022. On this basis, by disposing the biometric recognition device 100 on the first folding body 2022, regardless of whether the electronic device 200 is in a folded or unfolded state, biometric recognition can be performed through the position of the corresponding lens group. It should be emphasized that the second lens group 104 is disposed on the side of the first folding body 2022 close to the folding screen 204, so that the folding screen 204 can serve as a light source. When the biometric is close to the folding screen 204, the emitted light can be reflected into the second lens group 104 and then reflected into the sensor 106 under the action of the reflector 108. On this basis, since the electronic device 200 includes the biometric recognition device 100 in the above-mentioned first aspect embodiment, it has the beneficial effects of any of the above embodiments, which will not be elaborated here.

[0064] Among them, the electronic device 200 can be a smart phone, a tablet, a smart watch, a smart bracelet, or other devices with biometric recognition requirements.

[0065] Further, it includes: a first clamping structure 208 and a second clamping structure 210, which are respectively disposed on the first clamping structure 208 and the second clamping structure 210. When the biometric recognition device is in the first incident state, the first clamping structure 208 is clamped with the second clamping structure 210, and the folding screen 204 is unfolded.

[0066] Further, it further includes: a detection circuit 212, which is connected to the first clamping structure 208 and the second clamping structure 210. When the first clamping structure 208 is clamped with the second clamping structure 210, the detection circuit 212 is at a low level; a processor 214, which is electrically connected to the detection circuit 212. The processor 214 is used to control the area corresponding to the second lens group 104 of the biometric recognition device 100 on the folding screen 204 to be powered on to provide a light source when the detection circuit 212 is at a low level.

[0067] Further, the auxiliary light source of the biometric recognition device is disposed on the folding screen, and the folding screen is disposed on the side of the second lens group away from the reflector of the biometric recognition device.

[0068] By arranging the auxiliary light source on the folding screen and arranging the folding screen on the side of the second lens group away from the reflecting member, that is, the folding screen and the reflecting member are arranged on both sides of the second lens group, so that when the electronic device is in different postures, the biometric recognition device will correspondingly adjust to different incident states, thereby realizing multi-angle biometric recognition using the same sensor.

[0069] According to the embodiments of the biometric recognition device and the electronic device of the present application, by arranging two lens groups with different light incident directions, when the biometric recognition device is in different incident states, the same sensor can be used to sense the light incident from different directions, saving the layout space of additional sensors and improving the diversity of biometric recognition at the same time.

[0070] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0071] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A biometric recognition device, characterized in that, Comprising: A first lens group and a second lens group, the optical axis directions of the first lens group and the second lens group are not parallel; A sensor, oppositely arranged relative to the first lens group; A reflector, arranged on one side of the exit direction of the second lens group, the reflector is used to receive the light that passes through the second lens group and enters; Wherein, when the biometric recognition device is in the first incident state, after the light passes through the second lens group, it enters the sensor through the reflector; when the biometric recognition device is in the second incident state, the light passes through the first lens group and then enters the sensor; An auxiliary light source, arranged on the side of the second lens group away from the reflector, the auxiliary light source is used to be powered on to provide light when the biometric recognition device is in the first incident state.

2. The biometric recognition device according to claim 1, wherein Further comprising: A planar lens, oppositely arranged relative to the sensor, and the planar lens is arranged on the side of the first lens away from the sensor, after the light passes through the planar lens, it passes through the first lens group and enters the sensor.

3. The biometric recognition device according to claim 2, characterized in that, Further comprising: A spacer structure, arranged on the planar lens, the spacer structure is used to space the object to be recognized from the planar lens so that the light is reflected by the object to be recognized and then enters the planar lens.

4. The biometric recognition device according to any one of claims 1 to 3, characterized in that Comprising: A lens housing, the first lens group and the second lens group are arranged in the lens housing; Wherein, the first lens group and the sensor are arranged in the lens housing along the first direction of the lens housing.

5. The biometric recognition device according to claim 4, wherein The second lens group and the reflector are arranged on the two side walls of the lens housing arranged along the second direction, and the first direction is perpendicular to the second direction.

6. An electronic device, characterized in that, Comprising: A first folding body and a second folding body that are rotatably connected; A folding screen, arranged on one side of the first folding body and the second folding body; A secondary screen, oppositely arranged relative to the folding screen on the other side of the first folding body; The biometric recognition device according to any one of claims 1 to 5, arranged on the first folding body; Wherein, the second lens group of the biometric recognition device is arranged on the side of the first folding body close to the folding screen.

7. The electronic device according to claim 6, wherein Comprising: A first clamping structure and a second clamping structure, respectively arranged on the first clamping structure and the second clamping structure, when the biometric recognition device is in the first incident state, the first clamping structure is clamped with the second clamping structure, and the folding screen is unfolded.

8. The electronic device according to claim 7, wherein Further comprising: A detection circuit, connected to the first clamping structure and the second clamping structure, when the first clamping structure and the second clamping structure are clamped, the detection circuit is at a low level; A processor, electrically connected to the detection circuit, the processor is used to control the area corresponding to the second lens group of the biometric recognition device on the folding screen to be powered on to provide light when the detection circuit is at a low level.

9. The electronic device according to claim 6, wherein The auxiliary light source of the biometric recognition device is arranged on the folding screen, and the folding screen is arranged on the side of the second lens group away from the reflector of the biometric recognition device.

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