Electronic device

Abstract

The invention discloses electronic equipment, and relates to the technical field of communication. The electronic equipment comprises an equipment main body, a display screen and a driving assembly, the equipment main body can be switched between an unfolded state and a folded state, the display screen and the driving assembly are both arranged on the equipment main body, the display screen comprises a bent part, the driving assembly is connected with the first end of the display screen, and the bent part is connected with the second end of the display screen. When the electronic equipment is in the unfolded state, the driving assembly can drive the display screen part to move relative to the equipment main body, and when the electronic equipment is in the unfolded state, the driving assembly can drive the display screen part to move relative to the equipment main body in the direction away from the second end of the display screen, so that the display screen is kept in the unfolded state; and / or under the condition that the electronic equipment is in the folding state, the driving assembly can drive part of the display screen to move relative to the equipment main body so as to adjust the length of the bending part.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to an electronic device. Background Art

[0002] In recent years, foldable electronic devices have gradually gained the favor of many users. They can not only bring a good visual impact to users, but also meet the users' demand for the portability of electronic devices. Foldable electronic devices mainly use a hinge mechanism to switch between a folded state and an unfolded state, thereby changing the size of the entire electronic device.

[0003] For currently available foldable electronic devices on the market, in the early stage of use, the crease depth of the display screen is small and the crease is not obvious visually. However, after long-term use, as the number of folds increases, the crease depth of the display screen will become larger and larger, and the display image at the crease position of the screen will be distorted, showing an obvious difference from the display images in the flat areas on both sides, which results in a poor user experience. In addition, when the electronic device is in the folded state, if a large force is applied to the bent portion of its display screen, the bent portion will be damaged, causing the display image of this part to be distorted. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide an electronic device that can solve the problem that the display image of the display screen of current electronic devices is prone to distortion.

[0005] To solve the above technical problems, this application is implemented as follows: This application provides an electronic device, including a device body, a display screen, and a driving component. The device body can switch between an unfolded state and a folded state. The display screen and the driving component are both arranged on the device body. The display screen includes a bent portion. The driving component is connected to the first end of the display screen, enabling a part of the display screen to move relative to the device body. When the electronic device is in the unfolded state, the driving component can drive a part of the display screen to move relative to the device body in a direction away from the second end of the display screen, so that the display screen remains in an extended state; and / or when the electronic device is in the folded state, the driving component can drive a part of the display screen to move relative to the device body to adjust the length of the bent portion.

[0006] In an embodiment of the present application, when the electronic device has been used for a long time and is in an unfolded state, the driving component drives a part of the display screen to move relative to the device body in a direction away from the second end of the display screen, so as to reduce the crease depth at the folding position of the display screen and keep the display screen in an extended state, thereby avoiding deformation of the display image at the crease position of the display screen, and further making the display effect at the crease position of the display screen basically the same as that of the flat areas on both sides, so as to improve the user experience; when the electronic device is in a folded state, the driving component can drive a part of the display screen to move relative to the device body to adjust the length of the bending part of the display screen, reduce the internal stress of the bending part or prevent the bending part from being squeezed by the electronic device, thereby reducing the acting force on the bending part and avoiding damage to the bending part of the display screen, and further ensuring that the display image of the display screen is not deformed. Therefore, the embodiment of the present application can solve the problem that the display image of the display screen of the current electronic device is prone to deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application; Figure 2 is Figure 1 a partial enlarged view of the structure shown; Figure 3 is a schematic structural diagram of a display screen and a driving component disclosed in an embodiment of the present application; Figure 4 is Figure 3 a partial enlarged view of the structure shown; Figure 5 is a partial schematic structural diagram of the electronic device in an unfolded state disclosed in an embodiment of the present application; Figure 6 is a partial schematic structural diagram of the electronic device in a folded state disclosed in an embodiment of the present application.

[0008] DESCRIPTION OF THE REFERENCE NUMERALS: 100 - device body, 110 - hinge mechanism, 111 - connection component, 112 - first swing arm, 113 - second swing arm, 120 - first main body part, 130 - second main body part; 200 - display screen, 210 - first part, 211 - rack, 212 - detection opening, 220 - bending part, 230 - second part; 300 - driving component, 310 - driving source, 320 - first gear, 330 - second gear, 340 - third gear, 341 - annular main body, 342 - transmission teeth, 350 - connection shaft; 400 - position detection device, 410 - second detection piece; 510 - The first acoustic device, 520 - The second acoustic device, 530 - The camera module, 540 - The PCB board. Detailed implementation manners

[0009] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0010] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0011] Next, in conjunction with the accompanying drawings, the electronic device provided by the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0012] As Figures 1 to 6 shown, an electronic device disclosed in an embodiment of the present application includes a device main body 100, a display screen 200, and a driving component 300. The device main body 100 can be switched between an unfolded state and a folded state. When the device main body 100 is in the unfolded state, the effective display area of the display screen 200 is larger, and users can have a better experience during activities such as watching videos and playing games. When the device main body 100 is in the folded state, the size of the electronic device is smaller, which is convenient for users to carry.

[0013] Both the display screen 200 and the driving component 300 are disposed on the device main body 100. The display screen 200 includes a bent portion 220. The driving component 300 is connected to the first end of the display screen 200, so that a part of the display screen 200 can move relative to the device main body 100. Optionally, the display screen 200 includes a first part 210, a bent portion 220, and a second part 230 that are connected in sequence. Among them, the first end of the display screen 200 is located at the first part 210, the first end of the display screen 200 can move relative to the device main body 100, the second end of the display screen 200 is located at the second part 230, and the second end of the display screen 200 is fixedly connected to the device main body 100.

[0014] When the electronic device is in the unfolded state, the driving component 300 can drive a part of the display screen 200 to move relative to the device body 100 in a direction away from the second end of the display screen 200, so that the display screen 200 is maintained in the stretched state. At this time, the wrinkled crease is forcibly straightened, the depth of the crease becomes shallower, the width becomes larger, and the appearance recognition degree decreases, becoming less obvious visually; and / or, when the electronic device is in the folded state, the driving component 300 can drive a part of the display screen 200 to move relative to the device body 100 to adjust the length of the bent portion 220 of the display screen 200. The length here specifically refers to the length from the first end of the bent portion 220 (i.e., the end connected to the first part 210) to the second end (i.e., the end connected to the second part 230). During the process of folding the electronic device, the boundary of the bent portion of the display screen 200 will change, that is, the positions of the first end and the second end of the bent portion 220 will change, so the length of the bent portion 220 will change.

[0015] In the embodiment of the present application, when the electronic device has been used for a long time and is in the unfolded state, the driving component 300 drives a part of the display screen 200 to move relative to the device body 100 in a direction away from the second end of the display screen 200, so as to reduce the depth of the crease at the folding position of the display screen 200 and keep the display screen 200 in the stretched state, thereby avoiding deformation of the display picture at the crease position of the display screen 200, and further making the display effect at the crease position of the display screen 200 basically the same as that of the flat areas on both sides, so as to improve the user experience; when the electronic device is in the folded state, the driving component 300 can drive a part of the display screen 200 to move relative to the device body 100 to adjust the length of the bent portion 220 of the display screen 200, reduce the internal stress of the bent portion 220 or avoid the bent portion 220 from being squeezed by the electronic device, thereby reducing the acting force on the bent portion 220 and avoiding damage to the bent portion 220 of the display screen 200, and further ensuring that the display picture of the display screen 200 is not deformed. Therefore, the embodiment of the present application can solve the problem that the display picture of the display screen 200 of the current electronic device is prone to deformation.

[0016] In an alternative embodiment, the device body 100 includes a first body portion 120, a second body portion 130, and a hinge mechanism 110. The first body portion 120 is rotatably connected to the second body portion 130 through the hinge mechanism 110 to enable the electronic device to switch between an unfolded state and a folded state. Among them, the first end of the display screen 200 is slidably connected to the first body portion 120, and the second end of the display screen 200 is fixedly connected to the second body portion 130. The hinge mechanism 110 can form an accommodation space. Optionally, the hinge mechanism 110 includes a connection component 111, a first swing arm 112, and a second swing arm 113. The first swing arm 112 is rotatably connected to the second swing arm 113 through the connection component 111. The first swing arm 112 is connected to the first body portion 120, and the second swing arm 113 is connected to the second body portion 130. The first swing arm 112, the second swing arm 113, and the connection component 111 can form the above-mentioned accommodation space.

[0017] When the electronic device is in the folded state, the bending portion 220 is located in the accommodation space of the hinge mechanism 110 of the device body 100. The driving component 300 can drive a part of the display screen 200 to move relative to the device body 100 in a first direction to increase the length of the bending portion 220 and reduce the gap between the bending portion 220 and the hinge mechanism 110, or drive a part of the display screen 200 to move relative to the device body 100 in a second direction to reduce the length of the bending portion 220 and increase the gap between the bending portion 220 and the hinge mechanism 110. Among them, both the first direction and the second direction are parallel to the width direction of the hinge mechanism 110 (the width direction of the hinge mechanism 110 specifically refers to the width direction of the electronic device when the electronic device is in the folded state), and the first direction and the second direction are opposite.

[0018] Specifically, when the electronic device is in a folded state and in a supported state (such as when the user is carrying it or placing it on a table), the driving component 300 can drive a part of the display screen 200 to move relative to the device body 100 in a first direction, so as to increase the length of the bending part 220, thereby increasing the distance between the two opposite side walls of the bending part 220 and reducing the gap between the bending part 220 and the hinge mechanism 110 (such as reducing the gap between the bending part 220 and the connecting component 111, the first swing arm 112, and the second swing arm 113). Furthermore, the internal stress of the bending part 220 is reduced, and the bending part 220 is prevented from being damaged due to excessive internal stress. Therefore, this is beneficial to extending the service life of the display screen 200; when the electronic device is in a falling state, the driving component 300 can drive a part of the display screen 200 to move relative to the device body 100 in a second direction, so as to reduce the length of the bending part 220, increase the gap between the bending part 220 and the hinge mechanism 110 (such as increasing the gap between one end of the bending part 220 that is away from the first part 210 and the second part 230 and the connecting component 111, that is, increasing the distance between the bending part 220 and the connecting component 111), and prevent the hinge mechanism 110 from impacting the bending part 220 of the display screen 200 after being impacted, thereby improving the reliability of the display screen 200. This can not only ensure that the display screen 200 does not deform, but also is beneficial to extending the service life of the display screen 200.

[0019] It should be noted that the specific width of the above gap can be a preset distance L, and the preset distance L can specifically be a certain value or a value range. The embodiments of the present application do not make specific limitations on this.

[0020] Optionally, the electronic device further includes a gravity detection component (acceleration sensor) and a control component. The gravity detection component and the control component are both arranged on the device body 100. The gravity detection component and the driving component 300 are both electrically connected to the control component. The gravity detection component is used to detect whether the electronic device is in a falling state. When the electronic device is in a folded state and in a falling state, the control component controls the driving component 300 to drive a part of the display screen 200 to move relative to the device body 100 according to the detection signal of the gravity detection component.

[0021] In another alternative embodiment, the driving assembly 300 includes a driving source 310 and a first gear 320. Optionally, the driving source 310 may be a driving member such as a motor, and the embodiments of the present application do not make specific limitations thereto. The driving source 310 is disposed on the device main body 100, and the first gear 320 is connected to the output shaft of the driving source 310. The display screen 200 has a display surface, and a rack 211 is provided on a surface of the display screen 200 facing away from the display surface. Optionally, the rack 211 may extend along the moving direction of a part of the display screen 200; optionally, the rack 211 and the backlight plate of the display screen 200 may be adhesively fixed through an adhesive. The first gear 320 is in transmission connection with the rack 211, and the driving source 310 can drive a part of the display screen 200 to move relative to the device main body 100 through the first gear 320 and the rack 211. Since the gear-rack transmission has the characteristic of fast response speed, in this solution, the driving source 310 drives a part of the display screen 200 to move relative to the device main body 100 through the first gear 320 and the rack 211. During the process of the device main body 100 switching from the unfolded state to the folded state, the first gear 320 and the rack 211 can achieve rapid reverse movement, so that a part of the display screen 200 moves in the reverse direction relative to the device main body 100, thereby avoiding damage to the bending portion 220 of the display screen 200 due to excessive internal stress. Of course, the above-mentioned first gear 320 and rack 211 may also be replaced with a worm and worm gear structure.

[0022] Optionally, the first gear 320 and the rack 211 may be directly meshed; or, in other alternative embodiments, the driving assembly 300 further includes a second gear 330 and a third gear 340 that are connected and coaxially arranged. The second gear 330 is meshed with the first gear 320, and the central axis of the second gear 330 intersects with the central axis of the first gear 320. The third gear 340 is meshed with the rack 211. At this time, the installation position of the driving source 310 is relatively flexible and can be arranged according to actual needs. For example, the driving source 310 and the rack 211 may be arranged side by side in the length direction of the electronic device (here, the length direction of the electronic device specifically refers to the direction in which the top of the electronic device extends to the bottom when the electronic device is in the folded state and the user holds the electronic device, that is, the length direction of the hinge mechanism 110). At this time, the central axis of the second gear 330 is perpendicular to the central axis of the first gear 320. Or, the driving source 310 is arranged obliquely with respect to the rack 211, and an acute angle of any degree is formed between the extending direction of the output shaft of the driving source 310 and the extending direction of the rack 211. Of course, the central axis of the second gear 330 and the central axis of the first gear 320 may also be parallel, and at this time, the second gear 330 and the first gear 320 are arranged side by side in the extending direction of the rack 211.

[0023] Optionally, both the second gear 330 and the first gear 320 in the above embodiments can be bevel gears, which can change the transmission direction and meet various mechanical transmission requirements.

[0024] In a further optional embodiment, the number of the third gears 340 can be one, or the number of the third gears 340 is at least two. The racks 211 and the third gears 340 are arranged in one-to-one correspondence, and each third gear 340 meshes with each rack 211 respectively. The driving assembly 300 further includes a connecting shaft 350. The second gear 330 and each third gear 340 are sleeved on the connecting shaft 350, so that the second gear 330 is connected to each third gear 340 through the connecting shaft 350. The second gear 330 is located at one end of the connecting shaft 350, and each third gear 340 is arranged at intervals along the axial direction of the connecting shaft 350. The driving source 310 drives the connecting shaft 350 to rotate through the first gear 320 and the second gear 330, and the connecting shaft 350 drives each third gear 340 to rotate together, thereby driving a part of the display screen 200 to move relative to the device main body 100. This solution drives a part of the display screen 200 to move by arranging a plurality of third gears 340 and racks 211, which can increase the connection area between the driving assembly 300 and the display screen 200, thereby improving the connection stability between the two, and at the same time, the driving force received by the display screen 200 can be evenly distributed, so that a part of the display screen 200 can move more smoothly. Of course, the connecting shaft 350 can also be not provided, and the driving source 310, the first gear 320 and the second gear 330 are respectively arranged in one-to-one correspondence with the third gear 340.

[0025] In another optional embodiment, the third gear 340 includes a connected annular main body 341 and a plurality of transmission teeth 342. The arc length formed by each transmission tooth 342 can be equal to the circumference of the annular main body 341, that is, the third gear 340 can be a complete gear; or, the arc length formed by each transmission tooth 342 is greater than one-third of the circumference of the annular main body 341 and less than one-half of the circumference of the annular main body 341. At this time, the third gear 340 is an incomplete gear, and the side of the central axis of the third gear 340 close to the device main body 100 is a smooth surface, and no transmission teeth 342 are provided thereon, which can reduce the size of the third gear 340 in the thickness direction of the electronic device, thereby reducing the thickness of the electronic device.

[0026] Optionally, the electronic device further includes a sliding connection layer. Since the sliding connection layer still allows sliding in a certain direction in the bonded state, a part of the display screen 200 and the device main body 100 are bonded through the sliding connection layer. The sliding connection layer needs to avoid the racks 211. The setting of the sliding connection layer can not only ensure the movement of a part of the display screen 200 relative to the device main body 100, but also play a role in connecting and supporting the display screen 200.

[0027] In yet another alternative embodiment, the electronic device further includes a position detection device 400 and a control member. The position detection device 400 and the driving assembly 300 are both electrically connected to the control member. The position detection device 400 is configured to detect the moving distance of a part of the display screen 200. The control member can control the driving assembly 300 to start working or stop working according to the moving distance of the part of the display screen 200 detected by the position detection device 400. When the electronic device is in the unfolded state, if the display screen 200 is stretched excessively, it will cause the display screen 200 to be torn; when the electronic device is in the folded state, if it is compressed excessively, it will cause wrinkles on the surface of the display screen 200. Therefore, in order to ensure that stretching and compression do not affect the reliability of the display screen 200, the moving distance of a part of the display screen 200 is detected by the position detection device 400, and the control member controls the driving assembly 300 to start working or stop working according to the moving distance, thereby protecting the display screen 200 and further extending the service life of the display screen 200. Of course, the above-mentioned position detection device 400 may not be provided, and the driving assembly 300 can be controlled to start working or stop working by observing the state of the display screen 200 manually.

[0028] In a further alternative embodiment, the position detection device 400 includes a first detection member. The first detection member is electrically connected to the control member. The first detection member is configured to emit light. One of a part of the display screen 200 and the device body 100 is provided with the first detection member, and the other is provided with at least two detection openings 212 that are sequentially spaced apart along the moving direction of the part of the display screen 200. Each detection opening 212 can be opposite to the first detection member. During the process that the driving assembly 300 drives a part of the display screen 200 to move relative to the device body 100, each detection opening 212 can be opposite to the first detection member. During this process, the light emitted by the first detection member is directed towards the part of the display screen 200, and there is a difference in the intensity of the light reflected by the detection opening 212 and the part between adjacent detection openings 212. At this time, the first detection member can calculate the moving distance of the part of the display screen 200 according to the different intensities of the received light (similar to the grating recognition principle), and then control the driving assembly 300 to start working or stop working. This solution forms a grating structure by using the structure of the electronic device itself, and then the moving distance of a part of the display screen 200 is detected by the first detection member. The position detection device 400 has a small number of components and a simple structure, and is easy to manufacture. Of course, the first detection member can also be replaced by a counter, and the moving distance of a part of the display screen 200 is determined by calculating the number of detection openings 212.

[0029] Optionally, at least one of the detection openings 212 can be a groove structure or a through-hole structure, and the embodiments of the present application do not make specific limitations on this.

[0030] Optionally, when the device body 100 is provided with a first detection component, at least two detection openings 212 are arranged at intervals in sequence along the moving direction of a part of the display screen 200. At this time, the detection openings 212 can be formed on the backlight plate of the display screen 200; further optionally, the detection openings 212 can be formed by an etching process, and of course, they can also be formed by other processes. The embodiments of the present application do not make specific limitations on this.

[0031] Optionally, the shapes of the detection openings 212 can be circular, triangular, strip-shaped, etc. The embodiments of the present application do not make specific limitations on this; further optionally, the shapes of the detection openings 212 are strip-shaped, and each detection opening 212 extends along the length direction of the electronic device (here, the length direction of the electronic device specifically refers to the direction in which the top of the electronic device extends to the bottom when the electronic device is in a folded state and the user holds the electronic device, that is, the length direction of the hinge mechanism 110). At this time, the widths of the detection openings 212 can be set to be relatively small, and the distances between adjacent detection openings 212 can also be set to be relatively small to improve the detection accuracy of the position detection device 400 and make the moving distance of a part of the display screen 200 more accurate; moreover, when the above-mentioned strip-shaped detection openings 212 are adopted, since the cross-sectional area of the detection openings 212 is relatively large, the change in the light intensity after reflection is more obvious, which is convenient for the first detection component to identify, thereby improving the detection accuracy of the position detection device 400.

[0032] In a further optional embodiment, the position detection device 400 further includes a second detection component 410. The second detection component 410 includes at least two light absorption units, and each light absorption unit is correspondingly arranged in each detection opening 212. Each light absorption unit is used to absorb the light emitted by the first detection component so that the light irradiated to the detection opening 212 is absorbed by the light absorption unit, thereby reducing the reflected light. At this time, the difference in the light intensity reflected at the detection opening 212 and the light intensity reflected at the part between adjacent detection openings 212 is more obvious, which is beneficial to further improving the detection accuracy of the first detection component. Of course, an absorbent coating can also be coated on the inner surface of each detection opening 212; or optical elements, such as reflectors, can be arranged in each detection opening 212.

[0033] In another alternative embodiment, the driving assembly 300 includes a driving source 310 disposed on the device main body 100. The driving source 310 is connected to the first end of the display screen 200, and the driving source 310 can drive a part of the display screen 200 to move relative to the device main body 100. Optionally, the driving source 310 and the position detection device 400 may be arranged at intervals in the width direction of the electronic device (here, the width direction of the electronic device specifically refers to the extending direction from the first end to the second end of the display screen 200 when the electronic device is in the unfolded state); or, in other embodiments, the driving source 310 and the position detection device 400 are arranged at intervals in a third direction, where the third direction is perpendicular to both the moving direction of a part of the display screen 200 and the thickness direction of the electronic device. That is to say, the driving source 310 and the position detection device 400 in this solution are arranged at intervals in the length direction of the electronic device (here, the length direction of the electronic device specifically refers to the extending direction from the top end to the bottom end of the electronic device when the electronic device is in the folded state and the user holds the electronic device, that is, the length direction of the hinge mechanism 110), which can save space in the width direction of the electronic device, thereby facilitating the arrangement of other structures (such as acoustic devices, etc.).

[0034] Optionally, the electronic device further includes a first acoustic device 510, a second acoustic device 520, and a camera module 530. The first acoustic device 510 and the second acoustic device 520 are both disposed on the first main body portion 120 of the device main body 100, and the first acoustic device 510 and the second acoustic device 520 are respectively located at the first end and the second end (i.e., the top end and the bottom end) of the device main body 100 in its length direction (here, the length direction of the electronic device specifically refers to the extending direction from the top end to the bottom end of the electronic device when the electronic device is in the folded state and the user holds the electronic device), so as to improve the sound effect of the electronic device; the camera module 530 is disposed on the second main body portion 130 of the device main body 100, and it is used for taking pictures.

[0035] Optionally, the electronic device further includes a main board and a PCB board 540 disposed on the device main body 100. The top ends and the bottom ends of the first main body portion 120 and the second main body portion 130 are both provided with the PCB board 540. Each PCB board 540 is electrically connected to the functional devices disposed around it, and each PCB board 540 is electrically connected to the main board.

[0036] The electronic device disclosed in the embodiments of the present application may be an electronic device such as a smart phone, a tablet computer, an e-book reader, a wearable device (such as a smart watch), an electronic game console, etc. The embodiments of the present application do not specifically limit the types of electronic devices.

[0037] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. An electronic device, characterized in that: The device comprises a device body (100), a display screen (200) and a driving assembly (300); the device body (100) can be switched between an unfolded state and a folded state; the display screen (200) and the driving assembly (300) are both arranged on the device body (100); the display screen (200) comprises a bending portion (220); the driving assembly (300) is connected to a first end of the display screen (200) so that a portion of the display screen (200) can move relative to the device body (100); When the electronic device is in the unfolded state, the driving component (300) can drive a portion of the display screen (200) to move relative to the device body (100) in a direction away from the second end of the display screen (200), so that the display screen (200) remains in the extended state; and / or, when the electronic device is in the folded state, the driving component (300) can drive a portion of the display screen (200) to move relative to the device body (100), so as to adjust the length of the bent portion (220).

2. The electronic device according to claim 1, characterized in that: The device body (100) comprises a first main body portion (120), a second main body portion (130) and a hinge mechanism (110); the first main body portion (120) is rotatably connected to the second main body portion (130) via the hinge mechanism (110) so that the electronic device can be switched between the unfolded state and the folded state; the hinge mechanism (110) can form a storage space. When the electronic device is in the folded state, the bending portion (220) is located in the accommodating space, and the driving component (300) can drive part of the display screen (200) to move relative to the device body (100) along a first direction to increase the length of the bending portion (220) and reduce the gap between the bending portion (220) and the hinge mechanism (110), or drive part of the display screen (200) to move relative to the device body (100) along a second direction to reduce the length of the bending portion (220) and increase the gap between the bending portion (220) and the hinge mechanism (110). The first direction and the second direction are both parallel to the width direction of the hinge mechanism (110), and the first direction and the second direction are opposite.

3. The electronic device according to claim 1, characterized in that: The driving assembly (300) comprises a driving source (310) and a first gear (320); the driving source (310) is arranged on the device body (100); the first gear (320) is connected to the output shaft of the driving source (310); the display screen (200) has a display surface; a rack (211) is provided on a side of the display screen (200) facing away from the display surface; the first gear (320) is transmission-connected to the rack (211); the driving source (310) can drive part of the display screen (200) to move relative to the device body (100) via the first gear (320) and the rack (211).

4. The electronic device according to claim 3, characterized in that: The drive assembly (300) further comprises a second gear (330) and a third gear (340) which are connected and coaxially arranged, the second gear (330) meshing with the first gear (320), and the central axis of the second gear (330) intersects with the central axis of the first gear (320), and the third gear (340) meshing with the rack (211).

5. The electronic device according to claim 4, characterized in that: The number of the third gears (340) is at least two, the racks (211) and the third gears (340) are arranged in one-to-one correspondence, and each of the third gears (340) is respectively meshed with each of the racks (211). The driving assembly (300) further comprises a connecting shaft (350), and the second gear (330) and each of the third gears (340) are both sleeved on the connecting shaft (350), so that the second gear (330) is connected to each of the third gears (340) through the connecting shaft (350), and the second gear (330) is located at one end of the connecting shaft (350), and each of the third gears (340) is arranged at intervals along the axial direction of the connecting shaft (350).

6. The electronic device according to claim 4, characterized in that: The third gear (340) comprises a connected annular body (341) and a plurality of transmission teeth (342), wherein the arc length formed by each of the transmission teeth (342) is greater than one third of the circumference of the annular body (341) and less than one half of the circumference of the annular body (341).

7. The electronic device according to claim 1, characterized in that: The electronic device further comprises a position detection device (400) and a control component, wherein the position detection device (400) and the drive component (300) are both electrically connected to the control component, the position detection device (400) is used to detect the moving distance of a portion of the display screen (200), and the control component can control the drive component (300) to start or stop working according to the moving distance.

8. The electronic device according to claim 7, characterized in that: The position detection device (400) comprises a first detection member, the first detection member is electrically connected to the control member, the first detection member is used to emit light, one of the display screen (200) and the device body (100) is provided with the first detection member, and the other is provided with at least two detection openings (212) arranged in sequence along a moving direction of a portion of the display screen (200), and each of the detection openings (212) can be opposite to the first detection member.

9. The electronic device according to claim 8, characterized in that: The position detection device (400) further comprises a second detection member (410), the second detection member (410) comprising at least two light absorbing units, each of the light absorbing units being arranged in a one-to-one correspondence in each of the detection openings (212), and each of the light absorbing units being used to absorb the light.

10. The electronic device according to claim 7, characterized in that: The driving component (300) comprises a driving source (310), the driving source (310) being arranged on the device body (100), the driving source (310) being connected to the first end of the display screen (200), the driving source (310) being capable of driving a portion of the display screen (200) to move relative to the device body (100), the driving source (310) and the position detection device (400) being arranged at intervals along a third direction, The third direction is perpendicular to both the moving direction of the portion of the display screen (200) and the thickness direction of the electronic device.

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