Foldable electronic devices

Abstract

The present application discloses a foldable electronic device, belonging to the technical field of foldable electronic devices. The device comprises a first body, a second body, a first display screen, a second display screen, a fingerprint module, and a lens assembly. The first body and the second body are rotatably connected, the fingerprint module is disposed in the second body, and the lens assembly is disposed in the first body and the second body. The first display screen is disposed on a first side of the first body and the second body; the second display screen is disposed on a second side of the first body, with the first side and the second side being opposite. When the foldable electronic device is in an unfolded state, light emitted by the fingerprint module passes through the first display screen for fingerprint recognition. When the foldable electronic device is in a folded state, the lens assembly and the fingerprint module face each other, and light emitted by the fingerprint module passes through the first display screen, the lens assembly, and the second display screen in sequence for fingerprint recognition.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic devices, and specifically relates to a foldable electronic device. Background Art

[0002] With the advancement of technology, people's expectations for electronic devices are becoming increasingly sophisticated. Fingerprint unlocking technology, due to its excellent security and quick unlocking, has been widely used in electronic devices. In recent years, with the development of flexible screen technology, electronic devices with foldable screens have become widely used due to their combination of large screens and portability.

[0003] In the prior art, the fingerprint recognition module on electronic devices with foldable screens is typically fixedly installed under the display screen. When the foldable screen is unfolded as the main screen, the fingerprint recognition module located under the main screen is used to unlock the device with the user's fingerprint. When the foldable screen is folded into the secondary screen, the fingerprint recognition module located under the secondary screen is used to unlock the device with the user's fingerprint.

[0004] However, setting corresponding fingerprint recognition modules under the main screen and sub-screen of the folding screen respectively takes up a large space of the entire machine and increases the weight of the entire machine. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a foldable electronic device that can solve the problem in the prior art that the fingerprint recognition module of the electronic device occupies a large space and increases the weight of the entire device.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] An embodiment of the present application provides a foldable electronic device, including a first body, a second body, a first display screen, a second display screen, a fingerprint module and a lens assembly, the first body and the second body are rotatably connected, the fingerprint module is arranged in the second body, and the lens assembly is arranged in the first body and the second body; the first display screen is arranged on a first side of the first body and the second body; the second display screen is arranged on a second side of the first body, and the first side and the second side are opposite sides; when the foldable electronic device is in an unfolded state, light emitted by the fingerprint module passes through the first display screen for fingerprint recognition; when the foldable electronic device is in a folded state, the lens assembly and the fingerprint module are opposite, and light emitted by the fingerprint module passes through the first display screen, the lens assembly and the second display screen in sequence for fingerprint recognition.

[0008] In an embodiment of the present application, a foldable electronic device includes a first body and a second body, the first body and the second body being rotatably connected to enable the foldable electronic device to switch between an unfolded state and a folded state. A first display screen is disposed on a first side of the first body and the second body. During the switching process between the unfolded and folded states, the first display screen can also deform as the foldable electronic device unfolds and folds. A second display screen is mounted on the first body, and the second display screen and the first display screen are disposed on opposite sides of the first body, facing away from each other. A fingerprint module is disposed in the second body, and each of the first and second bodies has through holes, located at positions corresponding to the fingerprint module, to allow light to pass through the first and second bodies, enabling the fingerprint module to perform fingerprint recognition. When the foldable electronic device is in the unfolded state, a user presses the first display screen, and the fingerprint module receives light transmitted through the first display screen for fingerprint recognition. When the foldable electronic device is in the folded state, the first display screen folds, and the user needs to use the second display screen for fingerprint unlocking. When the user presses the second display screen, the fingerprint module receives light transmitted through the second display screen and then the folded first display screen for fingerprint recognition. In the embodiment of the present application, by providing through holes in the first and second bodies, respectively, and with the positions of the through holes corresponding to the positions of the fingerprint modules, light can be transmitted through the first and second bodies. By providing a fingerprint module in at least one of the first and second bodies, a single electrical fingerprint recognition module can be used to perform photoelectric fingerprint recognition in both the unfolded and folded states of the foldable electronic device. This has the beneficial effects of saving overall space, reducing overall weight, and achieving dual-screen (first display and second display) photoelectric fingerprint unlocking in different states (folded and unfolded) of the foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is one of the schematic diagrams of the unlocking optical path structure of the foldable electronic device in the unfolded state according to the embodiment of the present application;

[0010] Figure 2 This is one of the schematic diagrams of the unlocking optical path structure of the foldable electronic device in the folded state according to the embodiment of the present application;

[0011] Figure 3 This is the second schematic diagram of the unlocking optical path structure of the foldable electronic device in the unfolded state according to the embodiment of the present application;

[0012] Figure 4 This is the second schematic diagram of the unlocking optical path structure of the foldable electronic device in the folded state according to the embodiment of the present application;

[0013] Figure 5This is the third schematic diagram of the unlocking optical path structure of the foldable electronic device in the unfolded state according to the embodiment of the present application;

[0014] Figure 6 This is the third schematic diagram of the unlocking optical path structure of the foldable electronic device in the folded state according to the embodiment of the present application;

[0015] Figure 7 1 is a schematic diagram of the optical path structure of the liquid microlens head of the foldable electronic device in an embodiment of the present application when no pressure is applied;

[0016] Figure 8 This is a schematic diagram of the optical path structure of the liquid microlens head of the foldable electronic device when pressurized in an embodiment of the present application.

[0017] Description of reference numerals:

[0018] 10. First body; 20. Second body; 30. First display screen; 40. Second display screen; 50. Fingerprint module; 60. Lens assembly; 51. Electrochromic assembly; 511. First electrochromic component; 512. Second electrochromic component; 61. First lens; 62. Second lens; 63. Lens fixing bracket; 64. Lens moving bracket; 611. Transparent substrate; 612. First light-transparent liquid; 613. Second light-transparent liquid; 614. Electrode assembly; 615. Insulator; 6141. First electrode; 6142. Second electrode. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0021] To facilitate understanding of the solutions in the embodiments of the present application, we first introduce electrochromic materials. Electrochromic materials refer to the phenomenon that the optical properties (reflectivity, transmittance, absorptivity, etc.) of the material undergo stable and reversible color changes under the action of an external electric field, which is manifested in appearance as reversible changes in color and transparency.

[0022] In practical applications, the color and transparency of the electrochromic material can be changed by applying electricity, and the function corresponding to the change can be achieved by changing the color and transparency of the electrochromic material.

[0023] The foldable electronic device provided by the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 8 , an embodiment of the present application provides a foldable electronic device, including a first body 10, a second body 20, a first display screen 30, a second display screen 40, a fingerprint module 50 and a lens assembly 60, the first body 10 and the second body 20 are rotatably connected, the fingerprint module 50 is arranged in the second body 20, and the lens assembly 60 is arranged in the first body 10 and the second body 20; the first display screen 30 is arranged on a first side of the first body 10 and the second body 20; the second display screen 40 is arranged on a second side of the first body 10, and the first side and the second side are opposite sides; when the foldable electronic device is in an unfolded state, the light emitted by the fingerprint module 50 passes through the first display screen 30 for fingerprint recognition; when the foldable electronic device is in a folded state, the lens assembly 60 and the fingerprint module 50 are opposite, and the light emitted by the fingerprint module 50 passes through the first display screen 30, the lens assembly 60 and the second display screen 40 in sequence for fingerprint recognition.

[0025] In an embodiment of the present application, a foldable electronic device includes a first body 10 and a second body 20, which are pivotally connected to enable the foldable electronic device to switch between an unfolded state and a folded state. A first display screen 30 is disposed on a first side of the first and second bodies 10, 20. During the switching process between the unfolded and folded states, the first display screen 30 can also deform as the foldable electronic device unfolds and folds. A second display screen 40 is mounted on the first body 10, and the second display screen 40 and the first display screen 30 are disposed on opposite sides of the first body 10, facing away from each other. A fingerprint module 50 is disposed in the second body 20. Through holes are formed in both the first and second bodies 10, 20, and are located at positions corresponding to the fingerprint module 50 to allow light to pass through the first and second bodies 10, 20, enabling the fingerprint module 50 to perform fingerprint recognition. When the foldable electronic device is in the unfolded state, a user presses the first display screen 30, and the fingerprint module 50 receives light transmitted through the first display screen 30 for fingerprint recognition. When the foldable electronic device is in its folded state, with the first display 30 folded, the user needs to use the second display 40 for fingerprint unlocking. By pressing the second display 40, the fingerprint module 50 receives light that passes through the second display 40 and then the folded first display 30 for fingerprint recognition. In this embodiment of the present application, through-holes are provided in the first and second bodies 10, 20, respectively, with the positions of the through-holes corresponding to the position of the fingerprint module 50, allowing light to pass through the first and second bodies 10, 20. By placing the fingerprint module 50 in at least one of the first and second bodies 10, 20, a single fingerprint recognition module can be used to perform photoelectric fingerprint recognition in both the unfolded and folded states of the foldable electronic device. This approach saves space and weight, while enabling dual-screen (first and second displays 30, 40) photoelectric fingerprint unlocking in both the unfolded and folded states of the foldable electronic device.

[0026] Optionally, in the embodiment of the present application, the lens assembly 60 includes a first lens 61 ; the first lens 61 is used to converge the light emitted by the fingerprint module 50 and / or the reflected light received by the fingerprint module 50 .

[0027] In the embodiment of the present application, the first lens 61 is configured to converge light emitted by the fingerprint module 50 and reflected light received by the fingerprint module 50. When the foldable electronic device is in the unfolded state, the user presses the first display 30 or the second display 40, causing light to pass through the first display 30 or the first display 30 and the second display 40, and the first lens 61 converges the light emitted by the fingerprint module 50 and the reflected light received by the fingerprint module 50. When the foldable electronic device is in the unfolded state, the distance between the location where the user presses the fingerprint and the fingerprint module 50 is relatively large. The fingerprint recognition light passes through the first lens 61 to achieve a clear image. The first lens 61 converges the light emitted by the fingerprint module 50 and the reflected light received by the fingerprint module 50, thereby improving the clarity of the fingerprint. In the embodiment of the present application, by providing the coordination between the first lens 61 and the fingerprint module 50, light passes through the optical path, ensuring that the fingerprint module 50 captures a clear fingerprint image, thereby reducing the overall space occupied by the fingerprint module 50 and ensuring the accuracy of fingerprint unlocking.

[0028] Optionally, in the embodiment of the present application, the foldable electronic device further includes an electrochromic assembly 51, which includes a first electrochromic element 511. The first electrochromic element 511 is disposed in the second body 20 and is disposed on a side adjacent to the second display screen 40. When the foldable electronic device is in the unfolded state, the electrochromic assembly 51 is in a non-light-transmitting state; when the foldable electronic device is in the folded state, the electrochromic assembly 51 is in a light-transmitting state.

[0029] In an embodiment of the present application, the foldable electronic device further includes an electrochromic component 51, which includes a first electrochromic component 511, wherein the first electrochromic component 511 is disposed in the second body 20, and the first electrochromic component 511 is disposed on a side close to the second display screen 40.

[0030] When the foldable electronic device is in the unfolded state, the user's fingerprint is pressed against the second display screen 40, and the first electrochromic component 511 is energized, causing it to darken and reduce its transparency, making it opaque and concealing the internal structure of the device. When the foldable electronic device is in the folded state, the user's fingerprint is pressed against the second display screen 40, and the first electrochromic component 511 is energized and becomes transparent, allowing light to pass through the first electrochromic component 511 and illuminate the first display screen 30, thereby achieving a clear optical path. The fingerprint recognition light is then focused by the first lens 61 onto the fingerprint module 50, enabling the acquisition and recognition of the optoelectronic fingerprint. In this embodiment of the present application, the provision of the electrochromic component 51 protects the internal structure of the second body 20 when the foldable electronic device is in the unfolded state, while ensuring a clear optical path when the foldable electronic device is in the folded state.

[0031] Optionally, in an embodiment of the present application, the lens assembly 60 further includes a second lens 62, which is a convex lens and is disposed on the first body 10; when the foldable electronic device is in a folded state, the second lens 62 and the first lens 61 are used to converge the light emitted by the fingerprint module 50, and / or the reflected light received by the fingerprint module 50.

[0032] In an embodiment of the present application, when the foldable electronic device is in a folded state, the user presses the second display screen 40, and light passes through the second display screen 40, the first lens 61, the folded first display screen 30, and the second lens 62 in sequence, so that the fingerprint module 50 can perform fingerprint recognition. In actual application, the distance between the position where the user presses the fingerprint in the folded state and the fingerprint module 50 is relatively far, and the fingerprint recognition light cannot achieve a clear image after passing through the second display screen 40, the first lens 61, and the folded first display screen 30. If the fingerprint recognition light is directly focused on the fingerprint module 50, it will result in a large error and affect the user experience. Therefore, the setting of the second lens 62 is used to adjust the focal length of the optical path, and the fingerprint recognition light is focused on the fingerprint module 50 through the second optical lens, thereby improving the clarity of the fingerprint. In an embodiment of the present application, by providing a fingerprint module 50, and in different states of the foldable electronic device (expanded state and folded state), the light passes through different optical paths. In actual applications, the second lens 62 and the first lens 61 are both used to converge the light emitted by the fingerprint module 50 and the reflected light received by the fingerprint module 50, ensuring that the fingerprint module 50 can capture clear fingerprint images in different states, which has the beneficial effect of reducing the space occupied by the fingerprint module 50 and ensuring the accuracy of fingerprint unlocking.

[0033] Optionally, in the embodiment of the present application, the electrochromic component 51 further includes a second electrochromic element 512 , which is disposed between the second lens 62 and the first display screen 30 , and the first electrochromic element 511 is disposed between the second lens 62 and the second display screen 40 .

[0034] In this embodiment of the present application, the second electrochromic element 512 is disposed between the second lens 62 and the first display screen 30, and the first electrochromic element 511 is disposed between the second lens 62 and the second display screen 40. When the foldable electronic device is unfolded, a user's fingerprint is pressed against the second display screen 40, and the first and second electrochromic elements 511, 512 are energized, causing them to darken and decrease in transparency, rendering the electrochromic assembly 51 opaque and concealing the internal structure of the device. When the foldable electronic device is folded, a user's fingerprint is pressed against the second display screen 40, and the first and second electrochromic elements 511, 512 are energized and become transparent, allowing light to pass through the first electrochromic element 511 and illuminate the second lens, and light to pass through the second electrochromic element 512 and illuminate the folded first display screen 30. Light sequentially passes through the second display screen 40, the first electrochromic element 511, the first lens 61, the second electrochromic element 512, the folded first display screen 30, and the second lens 62, achieving a continuous optical path. The second lens 62 then focuses the fingerprint recognition light onto the fingerprint module 50, enabling the acquisition and recognition of the optoelectronic fingerprint. In this embodiment of the present application, the electrochromic element 51 protects the entire internal structure of the second body 20 when the foldable electronic device is in the unfolded state, while maintaining a continuous optical path when the foldable electronic device is in the folded state.

[0035] It should be noted that the first electrochromic element 511 and the second electrochromic element 512 may both be bonded to the first body 10 , or may both be connected to the first body 10 via connectors, which is not limited in this embodiment.

[0036] Optionally, in an embodiment of the present application, the first lens 61 is a liquid lens, and the liquid lens adjusts the focal length by deformation; when the foldable electronic device switches between the unfolded state and the folded state, the liquid lens deforms to adjust the focal length to converge the light emitted by the fingerprint module 50 and / or the reflected light received by the fingerprint module 50.

[0037] In the embodiments of the present application, a liquid lens is configured to adjust the focal length of a foldable electronic device in different states. In practical applications, one surface of the liquid lens is fixed. The other surface is made of a stretchable material that can be deformed. During adjustment, the stretchable surface is compressed to change its curvature, thereby achieving deformation and zoom of the liquid lens.

[0038] It should be noted that the focal length of the liquid lens changes with the deformation of the liquid lens. The specific formula for calculating the focal length of the liquid lens is as follows:

[0039]

[0040] Among them, f is the focal length, d is the thickness of the lens, r1 / r2 are the curvature radius of the two surfaces of the lens, n L is the refractive index of the lens. When the liquid lens is focused, the first light-transmitting portion of the liquid lens is deformed, causing the curvature of the first light-transmitting portion to change, thereby changing the focal length. The focal length after focusing is:

[0041]

[0042] Optionally, in an embodiment of the present application, the lens assembly 60 further includes a lens fixing bracket 63 and a lens moving bracket 64, and the lens fixing bracket 63 and the lens moving bracket 64 can move relative to each other in a direction perpendicular to the first display screen 30, and the lens fixing bracket 63 and the lens moving bracket 64 are both connected to the liquid lens; when the lens moving bracket 64 moves relative to the lens fixing bracket 63 in a direction perpendicular to the first display screen 30, the liquid lens is deformed.

[0043] In the embodiment of the present application, the liquid lens is connected to a lens fixing bracket 63, which is disposed within the second through hole. The lens fixing bracket 63 is connected to the second body 20 to achieve a fixed connection between the liquid lens and the second body 20. When the foldable electronic device is in the unfolded state, the user presses the second display screen 40, and the fingerprint module 50 receives light transmitted through the second display screen 40 for fingerprint recognition.

[0044] Furthermore, the lens moving bracket 64 is electrically controlled. During the process of switching the foldable electronic device from the unfolded state to the folded state, the lens moving bracket 64 has begun to squeeze the liquid lens to cause the liquid lens to deform. Therefore, the liquid lens is used to focus the fingerprint recognition light onto the fingerprint module 50, thereby improving the focusing speed of the photoelectric fingerprint module 50. This has the beneficial effects of improving the focusing speed, improving the fingerprint recognition and collection speed, and enhancing a good user experience.

[0045] Optionally, in an embodiment of the present application, the liquid lens includes a deformable first light-transmitting portion and a second light-transmitting portion, the first light-transmitting portion is connected to the lens moving bracket 64, and the second light-transmitting portion is connected to the lens fixing bracket 63; when the lens moving bracket 64 moves relative to the lens fixing bracket 63 in a direction perpendicular to the first display screen 30, the first light-transmitting portion is deformed.

[0046] In the embodiment of the present application, the liquid lens includes a deformable first light-transmitting portion and a second light-transmitting portion. The first light-transmitting portion is connected to a lens movable bracket 64, and one end of the lens movable bracket is connected to the second display screen 40. The lens movable bracket 64 is configured to cause the first light-transmitting portion to deform. The first light-transmitting portion can be a stretchable surface. During the movement of the lens movable bracket 64, the stretchable surface compresses, causing the stretchable surface to change in curvature. This deformation of the first light-transmitting portion causes the focal length of the liquid lens to change.

[0047] Optionally, in an embodiment of the present application, the first lens 61 is a liquid microlens head, which changes the distribution shape of the light-transmitting liquid through voltage changes to adjust the focal length; when the foldable electronic device switches between the unfolded state and the folded state, the distribution shape of the light-transmitting liquid in the liquid microlens head changes to adjust the focal length to converge the light emitted by the fingerprint module 50, and / or the reflected light received by the fingerprint module 50.

[0048] In the embodiments of the present application, a liquid microlens lens is configured to adjust the focal length of a foldable electronic device in different states. The liquid microlens lens is disposed within and fixedly connected to the second body 20. The liquid microlens lens adjusts the focal length by varying the distribution of the light-transmitting liquid through voltage changes.

[0049] When the foldable electronic device is in the folded state, the user presses the second display screen 40, and the first lens 61 receives light that passes through the second display screen 40, the folded first display screen 30, and the liquid microlens head in sequence for fingerprint recognition. In actual applications, the distance between the position where the user presses the fingerprint in the folded state and the fingerprint module 50 is relatively far, and the fingerprint recognition light cannot achieve a clear image after passing through only the second display screen 40 and the folded first display screen 30. If the fingerprint recognition light is directly focused on the fingerprint module 50, it will result in a large error, affecting the user experience. Therefore, by setting a liquid microlens head to adjust the focal length of the optical path, the fingerprint recognition light is focused on the fingerprint module 50 through the change of the focal length of the liquid microlens head, thereby improving the clarity of the fingerprint. In the embodiment of the present application, by setting up a fingerprint module 50 and a liquid microlens head, and in different states of the foldable electronic device (unfolded state and folded state), the light passes through different optical paths, thereby ensuring that the focal length of different optical paths can be adjusted through the liquid microlens head in different states, and then the fingerprint module 50 can collect a clear fingerprint image, which has the beneficial effect of reducing the space occupied by the fingerprint module 50 and ensuring the accuracy of fingerprint unlocking.

[0050] Optionally, in an embodiment of the present application, the liquid microlens head includes a light-transmitting substrate 611, a first light-transmitting liquid 612, a second light-transmitting liquid 613, an electrode assembly 614, and an insulating member 615; the first light-transmitting liquid 612 and the second light-transmitting liquid 613 are both arranged on the surface of the light-transmitting substrate 611, and the first light-transmitting liquid 612 and the second light-transmitting liquid 613 autonomously form a strip-shaped liquid array on the surface of the light-transmitting substrate 611 along a first direction; two electrode assemblies 614 are respectively arranged at both ends of the surface of the light-transmitting substrate 611, and the electrode assembly 614 includes a first electrode 61 41 and the second electrode 6142, the first electrode 6141 and the second electrode 6142 in the same electrode assembly 614 are arranged in a direction perpendicular to the first direction; the insulating member 615 is arranged between the first electrode 6141 and the second electrode 6142 in the same electrode assembly 614; the strip liquid array changes with the voltage between the first electrode 6141 and the second electrode 6142; wherein, the first light-transmitting liquid 612 and the second light-transmitting liquid 613 are immiscible with each other, and either of the first light-transmitting liquid 612 and the second light-transmitting liquid 613 is an electrolyte.

[0051] In the embodiment of the present application, the transparent substrate 611 is configured to provide a placement surface for the first and second transparent liquids 612 and 613, and in order to achieve a continuous fingerprint light path, the substrate is configured as the transparent substrate 611. The mutually immiscible first and second transparent liquids 612 and 613 autonomously form a strip-shaped liquid array along a first direction on the surface of the transparent substrate 611. The electrode assembly 614 is configured to achieve charge movement in the electrode assembly 614 upon power-up, thereby causing the strip-shaped liquid array to deform, thereby achieving a change in the focal length of the liquid microlens head. The two electrode assemblies 614 are respectively disposed at both ends of the surface of the transparent substrate 611. The electrode assembly 614 includes a first electrode 6141 and a second electrode 6142. The first and second electrodes 6141 and 6142 in the same electrode assembly 614 are disposed in a direction perpendicular to the first direction. An insulating member 615 is further provided between the first electrode 6141 and the second electrode 6142 in the same electrode assembly 614. The insulating member 615 is provided to prevent contact between the first electrode 6141 and the second electrode 6142. Furthermore, the strip-shaped liquid array changes with changes in the voltage between the first electrode 6141 and the second electrode 6142. Since either the first light-transmitting liquid 612 or the second light-transmitting liquid 613 is an electrolyte, a voltage is applied between the electrolyte and the electrode. When the voltage is applied externally, the electrolyte solution level around the container rises, and the non-electrolyte solution fills the space vacated by the electrolyte solution in the middle, thereby changing the curved shape between the two liquids, ultimately achieving the purpose of changing the focal length of the lens and achieving zoom.

[0052] It should be noted that the strip-shaped liquid array refers to a clearly defined liquid array formed on a transparent substrate 611 by a first light-transmitting liquid 612 and a second light-transmitting liquid 613, each of which is different. When the electrode assembly 614 is energized, the strip-shaped liquid array deforms through charge migration, thereby changing the focal length of the liquid microlens lens. Furthermore, the strip-shaped liquid array may also be a crescent-shaped liquid array, which is not limited in this embodiment.

[0053] The foldable electronic device disclosed in the embodiments of the present application may be a mobile phone, an e-book, a tablet computer, or other device. The embodiments of the present application do not limit the specific type of the foldable electronic device.

[0054] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0055] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A foldable electronic device, characterized in that: The device comprises a first body, a second body, a first display screen, a second display screen, a fingerprint module, and a lens assembly. The first body and the second body are rotatably connected, the fingerprint module is disposed in the second body, and the lens assembly is disposed in the first body and the second body. The first display screen is arranged on a first side of the first body and the second body; The second display screen is arranged on a second side of the first body, and the first side and the second side are opposite sides; When the foldable electronic device is in the unfolded state, light emitted by the fingerprint module passes through the first display screen to perform fingerprint recognition; When the foldable electronic device is in a folded state, the lens assembly and the fingerprint module are opposite to each other, and the light emitted by the fingerprint module passes through the first display screen, the lens assembly and the second display screen in sequence to perform fingerprint recognition.

2. The foldable electronic device according to claim 1, wherein: The lens assembly includes a first lens; The first lens is used to converge the light emitted by the fingerprint module and / or the reflected light received by the fingerprint module.

3. The foldable electronic device according to claim 2, wherein: The foldable electronic device further comprises an electrochromic component, wherein the electrochromic component comprises a first electrochromic member; The first electrochromic element is disposed in the second body, and the first electrochromic element is disposed on a side close to the second display screen; When the foldable electronic device is in the unfolded state, the electrochromic component is in a non-light-transmitting state; When the foldable electronic device is in a folded state, the electrochromic component is in a light-transmitting state.

4. The foldable electronic device according to claim 3, wherein: The lens assembly further includes a second lens, which is a convex lens and is disposed on the first body; When the foldable electronic device is in the folded state, the second lens and the first lens are used to converge the light emitted by the fingerprint module and / or the reflected light received by the fingerprint module.

5. The foldable electronic device according to claim 4, wherein: The electrochromic component further includes a second electrochromic element, which is disposed between the second lens and the first display screen, and the first electrochromic element is disposed between the second lens and the second display screen.

6. The foldable electronic device according to claim 3, wherein: The first lens is a liquid lens, and the liquid lens adjusts the focal length by deformation; When the foldable electronic device switches between the unfolded state and the folded state, the liquid lens deforms to adjust the focal length to converge the light emitted by the fingerprint module and / or the reflected light received by the fingerprint module.

7. The foldable electronic device according to claim 6, wherein: The lens assembly further includes a lens fixing bracket and a lens moving bracket, wherein the lens fixing bracket and the lens moving bracket are movable relative to each other in a direction perpendicular to the first display screen, and both the lens fixing bracket and the lens moving bracket are connected to the liquid lens; When the lens moving bracket moves relative to the lens fixing bracket in a direction perpendicular to the first display screen, the liquid lens is deformed.

8. The foldable electronic device according to claim 7, wherein: The liquid lens comprises a deformable first light-transmitting portion and a second light-transmitting portion, wherein the first light-transmitting portion is connected to the lens moving bracket, and the second light-transmitting portion is connected to the lens fixing bracket; When the lens moving bracket moves relative to the lens fixing bracket in a direction perpendicular to the first display screen, the first light-transmitting portion is deformed.

9. The foldable electronic device according to claim 3, wherein: The first lens is a liquid micro-lens head, which changes the distribution shape of the light-transmitting liquid by changing the voltage to adjust the focal length; When the foldable electronic device switches between the unfolded state and the folded state, the distribution shape of the light-transmitting liquid in the liquid microlens head changes to adjust the focal length to converge the light emitted by the fingerprint module and / or the reflected light received by the fingerprint module.

10. The foldable electronic device according to claim 9, wherein: The liquid microlens head includes a light-transmitting substrate, a first light-transmitting liquid, a second light-transmitting liquid, an electrode assembly and an insulating member; The first light-transmitting liquid and the second light-transmitting liquid are both disposed on the surface of the light-transmitting substrate, and the first light-transmitting liquid and the second light-transmitting liquid autonomously form a strip-shaped liquid array along a first direction on the surface of the light-transmitting substrate; The two electrode assemblies are respectively arranged at two ends of the surface of the light-transmitting substrate, the electrode assemblies include a first electrode and a second electrode, and the first electrode and the second electrode in the same electrode assembly are arranged along a direction perpendicular to the first direction; The insulating member is provided between the first electrode and the second electrode in the same electrode assembly; The strip-shaped liquid array changes as the voltage between the first electrode and the second electrode changes; The first light-transmitting liquid and the second light-transmitting liquid are immiscible with each other, and either one of the first light-transmitting liquid and the second light-transmitting liquid is an electrolyte.

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