An electronic device

Abstract

This application provides a foldable electronic device, relating to the field of electronic device technology. The electronic device includes a first frame, a first back cover, a screen, and a button assembly, wherein: the first frame has a first surface, a second surface, and an outer side surface; the first and second surfaces are disposed opposite to each other; the outer side surface is connected to the first and second surfaces; and a first mounting groove is provided on the outer side surface; the screen is located on the side of the first surface away from the second surface; the first back cover is located on the side of the second surface away from the first surface; the button assembly includes a fingerprint recognition module, a button, and a first flexible circuit board; the button assembly is mounted in the first mounting groove and is movable along a first direction; a portion of the first flexible circuit board is disposed between the fingerprint recognition module and the button; the button includes a third surface, a fourth surface, and a recess; the third surface faces the screen, the fourth surface faces away from the screen, and the recess is disposed on the third surface and recessed from the third surface to the fourth surface.

Description

[0001] This application is a divisional application. The original application has the application number 202380014177.4 and the original application date is October 19, 2023. The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic equipment technology, and more particularly to an electronic device. Background Technology

[0003] With the continuous improvement of people's living standards, electronic devices such as mobile phones and tablets are widely used. Electronic devices typically consist of a stacked frame and a screen. The screen's outgoing wire structure usually bends from the edge of the main body used to display video and images toward the back of the main body. Due to manufacturing tolerances, the height of the outgoing wire structure protruding from the display surface of the main body may be greater than the thickness of the main body.

[0004] Electronic devices typically include buttons such as power buttons or volume buttons for turning the device on / off or adjusting the volume. In related technologies, when the buttons and the screen's wiring structure overlap in the thickness direction of the electronic device, if the device's thickness is limited, a through-hole needs to be created in the frame between the buttons and the wiring structure to allow for structural clearance. However, this can cause the buttons to easily scratch the screen's wiring structure during assembly. Summary of the Invention

[0005] This application provides an electronic device to solve the problem of how to prevent buttons from scratching the screen's cable exit structure.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] This application provides an electronic device including a first frame, a screen, and buttons. The first frame includes a first surface and a second surface facing each other, and an outer surface connecting the first surface and the second surface. The outer surface has a first mounting groove. The screen is located on the side of the first surface away from the second surface; the screen includes a main body and a bent portion, the bent portion being bent from the edge of the main body towards the back of the main body. The buttons are mounted in the first mounting groove and are movable relative to the first frame along a pressing direction; the buttons include a third surface, a fourth surface, and a recessed portion, the third surface facing the screen, the fourth surface facing away from the screen, and the recessed portion being disposed on the third surface and recessed from the third surface towards the fourth surface; the recessed portion and the bent portion are disposed opposite each other along the height direction of the first frame.

[0008] The electronic device provided in this application embodiment has a first mounting groove on the outer side of the first frame. The button is installed in the first mounting groove and can move relative to the first frame along the pressing direction, allowing the user to perform related operations on the electronic device by triggering the button. By bending the screen from the edge of the main body towards the back of the main body, the driving circuit of the screen can be electrically connected to the main circuit board of the electronic device from the back of the main body. By setting a recess on the third surface of the button facing the screen, and the recess recessing from the third surface towards the fourth surface opposite to the screen, the recess and the bent part of the screen are arranged opposite each other along the height direction of the first frame, so that sufficient space can be reserved between the button and the bent part of the screen along the height direction of the first frame, which can prevent the button from scratching the bent part of the screen and causing damage to the screen during the assembly of the electronic device.

[0009] In some possible implementations, the first frame includes a baffle located between the recess and the bend. This baffle isolates the button and the bend of the screen, further preventing the button from scratching the bend during electronic device assembly. Additionally, it prevents dirt entering through the opening of the first mounting slot from corroding the bend and damaging the screen.

[0010] In some possible implementations, the thickness of the guard section is greater than or equal to 0.3 mm. This ensures the strength of the guard section and also guarantees that the guard section can be formed during the fabrication of the first frame.

[0011] In some possible implementations, the recess extends through the front end of the button along the pressing direction. This ensures sufficient space between the front end of the button and the bend in the screen along the pressing direction, preventing the button from scratching the bend during electronic device assembly and facilitating the fabrication of the recess.

[0012] In some possible implementations, the button further includes a fifth surface and a sixth surface disposed opposite to each other along the length of the first frame, with the recess extending through the fifth and sixth surfaces. This allows for sufficient space between the front end of the button and the bent portion of the screen, preventing the button from scratching the bent portion during electronic device assembly and facilitating the fabrication of the recess.

[0013] In some possible implementations, the bottom wall of the recess is flat. This makes it easier to form the recess on the button, reducing the difficulty of button design and manufacturing.

[0014] In some possible implementations, along the length of the first frame, the bottom wall of the recess includes a first region, a second region, and a third region that are sequentially connected. The distance from the second region to the fourth surface is greater than the distance from the first region to the fourth surface, and the distance from the second region to the fourth surface is also greater than the distance from the third region to the fourth surface. This increases the local strength of the button, thereby ensuring the overall strength of the button. Furthermore, the button portion between the second region and the fourth surface can be used for a transmission connection with a switch component electrically connected to the main circuit board, thereby improving the tactile feedback caused by the eccentricity of the button's front end and enhancing the user experience.

[0015] In some possible implementations, the electronic device further includes an elastic element and a first circuit board. The elastic element is disposed on the front end surface of the button portion between the second region and the fourth surface along the pressing direction. The first circuit board is located in front of the button along the pressing direction and is fixed relative to the first frame; the surface of the first circuit board facing the button has a switch element, and the elastic element is located between the button and the switch element and contacts the switch element. In this way, by providing an elastic element between the button and the switch element, damage to the switch element can be prevented during the transmission of the pressing force applied by the user to the button assembly, and damage to the switch element from external impacts can also be prevented.

[0016] In some possible implementations, the baffle has a first through hole connecting the first mounting groove and the first surface; a second region is disposed opposite to the first through hole along the height direction of the first frame. In this way, the baffle partially has a through hole, which can avoid the second region of the elastic element and buttons from bending the screen, thus facilitating the thinning and lightening of the electronic device.

[0017] In some possible implementations, the electronic device further includes a first protective film. The first protective film is disposed at the first through-hole and covers the first through-hole. This prevents dirt entering through the opening of the first mounting groove from corroding the bent portion at the first through-hole and causing screen damage.

[0018] In some possible implementations, the button includes a button body and two hook-on portions. Along the pressing direction, the two hook-on portions are disposed on the front end face of the button body and hooked onto a first frame; the two hook-on portions are spaced apart along the length of the first frame; a portion of the surface of the button body forms part of the bottom wall of a recess, and the surface of the hook-on portions facing the bend forms another portion of the bottom wall of the recess. In this way, the hook-on portions can hook the button assembly onto the first frame, preventing the button assembly from detaching from the first frame.

[0019] In some possible implementations, the button body includes a first part, a second part, and a third part connected sequentially along the length of the first frame. Two mounting portions include a first mounting portion and a second mounting portion, with the first mounting portion located in the first part and the second mounting portion located in the third part. The button also includes a first protruding ridge and a second protruding ridge. The first protruding ridge is located in the first part and on the bottom wall surface of the recessed portion, extending to the first mounting portion; the second protruding ridge is located in the third part and on the bottom wall surface of the recessed portion, extending to the second mounting portion. In this way, the first and second protruding ridges ensure the strength of the button at the first and second mounting portions, thereby ensuring the overall strength of the button and the reliability of the button assembly. Furthermore, increasing the distance between the button and the blocking portion at the first and second mounting portions can prevent the button assembly from wobbling or shaking during assembly onto the first frame, thus reducing assembly difficulty.

[0020] In some possible implementations, the baffle has a second through hole and a third through hole, both of which connect to the first mounting groove and the first surface. Along the height direction of the first frame, the first protruding ridge is positioned opposite to the second through hole, and the second protruding ridge is positioned opposite to the third through hole. This partial opening of through holes in the baffle avoids the first and second protruding ridges from intersecting with the bends in the screen, facilitating the reduction in the thickness and weight of the electronic device.

[0021] In some possible implementations, the electronic device also includes a second protective film and a third protective film. The second protective film is disposed at the second through-hole and covers the second through-hole. The third protective film is disposed at the third through-hole and covers the third through-hole. In this way, dirt entering from the opening of the first mounting groove can be prevented from corroding the bent portion through the second and third through-holes, thus preventing damage to the screen.

[0022] In some possible implementations, the thickness of the button portion between the recess and the fourth surface along the height direction of the first border is greater than or equal to 0.4 mm. This ensures sufficient space between the button and the bent portion of the screen while maintaining the overall strength of the button and thus guaranteeing the reliability of the button assembly.

[0023] In some possible implementations, the thickness of the button portion between the third and fourth surfaces along the height direction of the first frame is greater than or equal to 1.2mm. This ensures that the end face of the button facing the outside of the electronic device has a sufficiently large area, guaranteeing a good tactile feel when the user presses the button. Furthermore, when the button assembly is a fingerprint button, the chip of the fingerprint recognition module can be reinforced, and sufficient support can be provided for the flexible circuit board of the fingerprint button to prevent insufficient reinforcement of the fingerprint recognition module from damaging the chip.

[0024] In some possible implementations, the electronic device also includes a fingerprint recognition module and a first flexible circuit board. The fingerprint recognition module is disposed behind the button along the pressing direction. A portion of the first flexible circuit board is disposed between the button and the fingerprint recognition module and is electrically connected to the fingerprint recognition module. This allows for user authentication by comparing the fingerprint touched by the fingerprint recognition module with a pre-stored fingerprint, improving the convenience and security of the electronic device.

[0025] In some possible implementations, the screen includes a display panel and a first chip. The display panel is a flexible display panel, comprising a display portion and a non-display portion, with the display portion forming part of the main body. A portion of the non-display portion forms a bent portion, and another portion of the non-display portion forms a fixed portion. The fixed portion is fixed to the back of the main body, and the bent portion connects the fixed portion and the display portion. The first chip is disposed on the side of the fixed portion opposite to the main body. This reduces the area of ​​the black border at the edge of the main body, which helps to increase the display area and achieve a full-screen display effect. Attached Figure Description

[0026] Figure 1 Perspective views of electronic devices provided in some embodiments of this application in an unfolded state;

[0027] Figure 2 for Figure 1 A partial exploded view of the electronic device shown.

[0028] Figure 3 for Figure 1 The diagram shows the structure of the electronic device in a folded state.

[0029] Figure 4 for Figure 1 A schematic diagram of a cross-sectional structure of the electronic device shown at line AA;

[0030] Figure 5 for Figure 4 A magnified view of the electronic device shown at point B;

[0031] Figure 6 for Figure 4 A schematic diagram of the structure on the back of the screen of the electronic device shown;

[0032] Figure 7 for Figure 1 A schematic diagram of another cross-sectional structure of the electronic device shown at line AA;

[0033] Figure 8 for Figure 7 A magnified view of the electronic device shown at point E;

[0034] Figure 9 for Figure 7 A schematic diagram of the button assembly of the electronic device shown.

[0035] Figure 10 for Figure 9 The diagram shows the exploded structure of the button assembly.

[0036] Figure 11 for Figure 1 A schematic diagram of a partial cross-sectional structure of the electronic device shown at the CC line;

[0037] Figure 12 for Figure 11 A schematic diagram of a partial cross-sectional structure of the first frame of the electronic device shown.

[0038] Figure 13 for Figure 1 A schematic diagram of another cross-sectional structure of the electronic device shown at line AA;

[0039] Figure 14 for Figure 13 A magnified view of the electronic device shown at point D;

[0040] Figure 15 for Figure 13 A schematic diagram of the button assembly of the electronic device shown.

[0041] Figure 16 for Figure 1 Another partial structural diagram of the electronic device shown at the CC line;

[0042] Figure 17 for Figure 16 A schematic diagram of the button assembly of the electronic device shown.

[0043] Figure 18 for Figure 17 A schematic diagram of a partial cross-sectional structure of the first frame of the electronic device shown.

[0044] Figure label:

[0045] 100 - Electronic devices;

[0046] 10-Screen; 10a-First display area; 10c-Third display area; 10b-Second display area; 101-Main body; 102-Bending part; 103-Fixing part; 11-Back plate; 12-Display panel; 121-Display part; 122-Non-display part; 13-Light-transmitting cover; 14-First chip; 15-Second flexible circuit board;

[0047] 20 - Support device; 21 - First housing; 211 - First middle frame; 2111 - First side frame; 2111a - First surface; 2111a1 - Clearance hole; 2111b - Second surface; 2111c - Outer side; 2111d - First mounting groove; 2111d1 - First opening; 2111d2 - First bottom wall; 2111d3 - First limiting part; 2111d4 - Second limiting part; 2111e - Barrier part; 2111f - First through hole; 2111g - Second through hole; 2111h - Third through hole; 2112 - Second frame; 2113 - Third frame; 2114 - First middle plate; 212 - First rear cover; 22 - Second housing; 221 - Second middle frame; 2211 - Fourth frame; 2212 - Fifth frame; 2213 - Sixth frame; 2214 - Second middle plate; 222 - Second rear cover; 23 - Rotating shaft mechanism; 24 - First protective film; 25 - Second protective film; 26 - Third protective film;

[0048] 30 - Button assembly; 31 - Button; 311 - Third surface; 312 - Fourth surface; 313 - Recess; 3131 - Bottom wall surface; 3132 - Side wall surface; 3131a - First region; 3131b - Second region; 3131c - Third region; 314 - Fifth surface; 315 - Sixth surface; 316 - Protrusion; 317 - Button body; 318 - Hanging part; 3181 - First hanging part; 3181a - First connecting segment; 3181b - Second connecting segment; 3182 - Second hanging part; 3182a - Third connecting segment; 3182b - Fourth connecting segment; 319 - First protruding ridge; 320 - Second protruding ridge; 32 - Fingerprint recognition module; 33 - First flexible circuit board; 34 - First circuit board; 341 - Switch; 35 - Elastic element; 351 - Groove. Detailed Implementation

[0049] In the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0050] In the embodiments of this application, it should be understood that the directional terms mentioned, such as "up", "down", "left", "right", "inner", "outer", etc., are only for reference to the direction of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0051] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0052] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0053] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0054] In the embodiments of this application, it should be noted that the descriptions of "vertical" and "parallel" respectively indicate approximately vertical and approximately parallel within a certain error range. This error range can be a range with a deviation angle of less than or equal to 5°, 8° or 10° relative to absolute verticality and absolute parallelism, respectively, and is not specifically limited here.

[0055] This application provides an electronic device, which can be a user equipment (UE) or a terminal device. For example, the electronic device can be a tablet computer (PAD), a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device, an in-vehicle device, a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in smart grids, a wireless terminal in transportation safety, a wireless terminal in smart cities, a wireless terminal in smart homes, and other mobile or fixed terminals. The form of the electronic device is not specifically limited in the embodiments of this application.

[0056] Please see Figure 1 and Figure 2 , Figure 1 This is a perspective view of the electronic device 100 provided in some embodiments of this application in its unfolded state. Figure 2 for Figure 1 This is a partially exploded structural diagram of the electronic device 100. This embodiment and the following embodiments illustrate the electronic device 100 as a foldable handheld device, such as a mobile phone. The electronic device 100 is approximately rectangular in shape when unfolded. For ease of description in the following embodiments, an XYZ coordinate system is established for the electronic device 100 in its unfolded state, defining the length direction of the electronic device 100 as the X-axis, the width direction as the Y-axis, and the thickness direction as the Z-axis. It is understood that the coordinate system setting of the electronic device 100 can be flexibly set according to actual needs and is not specifically limited here. In some other embodiments, the shape of the electronic device 100 in its unfolded state can also be a square plate, a circular plate, an elliptical plate, etc. In still other embodiments, the electronic device 100 can also be a non-foldable handheld device, such as a mobile phone.

[0057] The electronic device 100 includes a screen 10, a support device 20, and a button assembly 30.

[0058] Understandable Figure 1 and Figure 2 The electronic device 100 is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 1 and Figure 2 Restrictions.

[0059] Screen 10 is used to display images, videos, and other information. Specifically, screen 10 is a flexible screen that can be bent and deformed between a folded state and an unfolded state.

[0060] A support device 20 is used to support the screen 10. The support device 20 includes a first housing 21, a second housing 22, and a pivot mechanism 23 connecting the first housing 21 and the second housing 22. The screen 10 is supported on the first housing 21, the second housing 22, and the pivot mechanism 23. The pivot mechanism 23 is used to achieve relative rotation between the second housing 22 and the first housing 21 to support the electronic device 100. Figure 1 The screen shows the switching between the unfolded and folded states.

[0061] Electronic device 100 in the state Figure 1 When unfolded, the device enables a large-screen display, providing users with richer information and a better user experience. For the folded state of the electronic device 100, please refer to [link / reference]. Figure 3 , Figure 3 for Figure 1 The diagram shows the structure of the electronic device 100 in a folded state. The size of the electronic device 100 is reduced, making it easier to carry.

[0062] It should be noted that, Figure 3 The illustrated electronic device 100 is an inward-folding electronic device, meaning that when the electronic device 100 is in the folded state, the support device 20 protects the screen 10 from view, making the screen 10 invisible to the user and preventing it from being scratched by hard objects. In some other embodiments, the electronic device 100 can also be an outward-folding electronic device, meaning that when the electronic device 100 is in the folded state, the screen 10 is located outside the support device 20 and is visible to the user, allowing for the display of video and images even when folded. The following embodiments are described based on the premise that the electronic device 100 is an inward-folding electronic device, and this should not be considered a special limitation on the structural form of the electronic device 100.

[0063] Please return to the reference. Figure 1 and Figure 2The first housing 21 may include a first middle frame 211 and a first rear cover 212. The first middle frame 211 may include a first side frame 2111, a second side frame 2112, a third side frame 2113, and a first middle plate 2114. The first side frame 2111 is the short side frame of the electronic device 100. The second side frame 2112 and the third side frame 2113 are arranged opposite to each other and spaced apart along the length direction of the first side frame 2111, that is, the first side frame 2111 extends along the Y-axis direction, and the second side frame 2112 and the third side frame 2113 are spaced apart along the Y-axis direction and both extend along the X-axis direction. The second side frame 2112, the first side frame 2111, and the third side frame 2113 are connected sequentially and surround the peripheral edge of the first middle plate 2114. Figure 1 and Figure 2 In the illustrated embodiment, the first border 2111, the second border 2112, and the third border 2113 are the right border, a bottom border, and a top border of the electronic device 100, respectively. In some other embodiments, the first border 2111 may also be the right border, top border, or bottom border of the electronic device 100.

[0064] The first frame 2111, second frame 2112, and third frame 2113 can be metal or ceramic. The first middle plate 2114 can be an aluminum plate, an aluminum alloy plate, or a magnesium alloy plate. The first frame 2111, second frame 2112, and third frame 2113 can be integrally formed. In some examples, the first frame 2111, second frame 2112, and third frame 2113 can be connected to the first middle plate 2114 by snap-fit, adhesive, or other methods. In other examples, the first frame 2111, second frame 2112, and third frame 2113 can also be an integrally formed structure with the first middle plate 2114, that is, the first middle frame 211 is a single structural component.

[0065] The second housing 22 may include a second middle frame 221 and a second rear cover 222. The second middle frame 221 may include a fourth side frame 2211, a fifth side frame 2212, a sixth side frame 2213, and a second middle plate 2214. The fourth side frame 2211 is the short side frame of the electronic device 100. The fifth side frame 2212 and the sixth side frame 2213 are arranged opposite to each other and spaced apart along the length direction of the fourth side frame 2211, that is, the fourth side frame 2211 extends along the Y-axis direction, and the fifth side frame 2212 and the sixth side frame 2213 are spaced apart along the Y-axis direction and extend along the X-axis direction. The fifth side frame 2212, the fourth side frame 2211, and the sixth side frame 2213 are connected sequentially and surround the peripheral edge of the second middle plate 2214. Figure 1 and Figure 2 In the embodiment shown, the fourth border 2211, the fifth border 2212, and the sixth border 2213 are the left border, another bottom border, and another top border of the electronic device 100, respectively.

[0066] The fourth frame 2211, fifth frame 2212, and sixth frame 2213 can be metal or ceramic. The second middle plate 2214 can be an aluminum plate, an aluminum alloy plate, or a magnesium alloy plate. The fourth frame 2211, fifth frame 2212, and sixth frame 2213 can be integrally formed. In some examples, the fourth frame 2211, fifth frame 2212, and sixth frame 2213 can be connected to the second middle plate 2214 by snap-fit, adhesive, or other methods. In other examples, the fourth frame 2211, fifth frame 2212, and sixth frame 2213 can also be an integrally formed structure with the second middle plate 2214, that is, the second middle frame 221 is a single structural component. Based on this, the pivot mechanism 23 is connected between the first middle frame 211 and the second middle frame 221.

[0067] Please see Figure 4 and Figure 5 , Figure 4 for Figure 1 The diagram shows a cross-sectional structure of the electronic device 100 at line AA. Figure 5 for Figure 4 The diagram shows an enlarged view of the electronic device 100 at point B. The first frame 2111 includes opposing first surfaces 2111a and 2111b, and an outer surface 2111c connecting the first surfaces 2111a and 2111b. The first surfaces 2111a and 2111b are arranged along the height direction of the first frame 2111, which is the thickness direction of the electronic device 100 and also perpendicular to the display interface of the screen 10. That is, the first surfaces 2111a and 2111b are arranged along the Z-axis. The first surfaces 2111a and 2111b respectively form part of two surfaces of the first middle frame 211 arranged along its height direction. The outer surface 2111c forms part of the exterior surface of the electronic device 100.

[0068] The outer surface 2111c has a first mounting groove 2111d, the first mounting groove 2111d has a first opening 2111d1 and a first bottom wall 2111d2, the first opening 2111d1 and the first bottom wall 2111d2 are arranged along the X-axis direction.

[0069] The first back cover 212 is located on the side of the second surface 2111b of the first frame 2111 away from the first surface 2111a, and is fixed to the first middle frame 211. In some examples, the first back cover 212 can be fixed to the first middle frame 211 by means of adhesive, snap-fit, etc. In other examples, the first back cover 212 can also be integrally formed with the first middle frame 211, that is, the first back cover 212 and the first middle frame 211 are a single structural component. A first accommodating space C1 is formed between the first back cover 212 and the first middle frame 211.

[0070] The second back cover 222 is located on the side of the second surface 2111b of the first frame 2111 away from the first surface 2111a, and is fixed to the second middle frame 221. In some examples, the second back cover 222 can be fixed to the second middle frame 221 by adhesive, snap-fit, or other means. In other examples, the second back cover 222 can also be integrally formed with the second middle frame 221, that is, the second back cover 222 and the second middle frame 221 are a single structural component. A second accommodating space C2 is formed between the second back cover 222 and the second middle frame 221. The first accommodating space C1 and the second accommodating space C2 are used to accommodate electronic components such as the motherboard, sub-board, speaker module, camera module, and battery.

[0071] The screen 10 is located on the side of the first surface 2111a of the first frame 2111 away from the second surface 2111b, that is, the screen 10 is located on the side of the first middle frame 211 away from the first back cover 212 along the Z-axis direction, and on the side of the second middle frame 221 away from the second back cover 222. The screen 10 has a display area for displaying image information, and the display area is exposed to facilitate the presentation of image information to the user. The display area of ​​the screen 10 includes a first display area 10a, a third display area 10c, and a second display area 10b. The first display area 10a is supported on the first middle frame 211 and fixed to the first middle plate 2114 by means of adhesive bonding or the like; the second display area 10b is supported on the second middle frame 221 and fixed to the second middle plate 2214 by means of adhesive bonding or the like; and the third display area 10c is supported on the pivot mechanism 23.

[0072] Please continue reading. Figure 4 and Figure 5 The screen 10 includes a back panel 11, a display panel 12, and a light-transmitting cover 13.

[0073] It should be noted that, Figure 4 and Figure 5 The diagram schematically illustrates some of the film layers included in the screen 10, the size and structure of which are not affected by the surrounding environment. Figure 4 and Figure 5 Due to limitations, these film layers of screen 10 may include, but are not limited to, flexible tape layers, polarizers, buffer layers, shielding layers, etc., and this application does not make specific limitations in this regard.

[0074] Display panel 12 is the main component for displaying images and videos. Display panel 12 is a flexible display panel. Specifically, display panel 12 can be an organic light-emitting diode (OLED) display panel, a micro organic light-emitting diode (micro organic light-emitting diode) display panel, or a quantum dot light-emitting diode (QLED) display panel.

[0075] The display panel 12 includes a display portion 121 and a non-display portion 122. The display portion 121 is stacked between the back panel 11 and the light-transmitting cover plate 13. The back panel 11, the display portion 121, and the light-transmitting cover plate 13 form the main body 101 of the screen, that is, the display portion 121 forms a part of the main body 101 of the screen 10. The display portion 121 is used to display image information. The non-display portion 122 bends from the edge of the display portion 121 toward the back of the back panel 11. A part of the non-display portion 122 forms a bending portion 102, and another part of the non-display portion 122 forms a fixing portion 103. The bending portion 102 connects the display portion 121 and the fixing portion 103. The fixing portion 103 is fixed to the back of the back panel 11, that is, the fixing portion 103 is fixed to the back side of the main body 101. The bending portion 102 bends from the edge of the main body 101 toward the back of the main body 101. It should be noted that the back side of the back panel 11 refers to the surface of the back panel 11 that is opposite to the display unit 121. The light-transmitting cover 13 is used to protect the display panel 12 from water, dust, and scratches. The material of the light-transmitting cover 13 includes, but is not limited to, plastic. In some other embodiments, the screen 10 may not have a light-transmitting cover 13.

[0076] In some examples, the backplate 11 is a rigid structural component. The material of the backplate 11 can be copper, copper alloy, steel, titanium, or titanium alloy. For example, the material of the backplate 11 can be titanium or titanium alloy. The backplate 11 has a small thickness, allowing it to bend and deform, so that when the screen 10 is applied to the foldable electronic device 100, the backplate 11 can be folded or unfolded synchronously with the screen 10. The backplate 11 itself has high rigidity, so that when an external force is applied along the thickness direction of the backplate 11, the backplate 11 is not prone to denting or deformation. In this way, the backplate 11 can provide good support for the display unit 121, thereby ensuring that the display unit 121 has good flatness and is not prone to denting or deformation when subjected to external forces.

[0077] Based on this, please refer to Figure 5 and Figure 6 , Figure 6 for Figure 4This is a schematic diagram of the back structure of the screen 10 of the electronic device 100. The screen 10 also includes a first chip 14 and a second flexible circuit board 15. The first chip 14 is disposed on the back of the main body 101, thereby reducing the area of ​​the black border at the edge of the main body 101, which is beneficial to increasing the display area and achieving a full-screen display effect for the screen 10. Specifically, the first chip 14 is disposed on the side of the fixing part 103 opposite to the main body 101. The first chip 14 can be formed by wafer slicing. A wafer refers to a silicon wafer used to fabricate silicon semiconductor circuits. The second flexible circuit board 15 is located on the side of the first chip 14 away from the bending part 102. The second flexible circuit board 15 is connected to the fixing part 103 and electrically connected to the first chip 14. The second flexible circuit board 15 can be electrically connected to the main circuit board of the electronic device 100 to realize electrical signal interaction between the first chip 14 and the main circuit board, thereby driving the display panel 12 to display corresponding image information.

[0078] In some examples, a supporting metal plate can be connected between the fixing part 103 and the main body 101. For example, the supporting metal plate can be an aluminum alloy plate with an elastic modulus of 70 GPa. When the user touches the display area of ​​the main body 101, the display area of ​​the main body 101 is recessed. The supporting metal plate can apply a reaction force to the display area of ​​the main body 101 to effectively buffer the external force, thereby making it less likely for stress concentration to occur on the first chip 14 and cause cracking damage. In other examples, the fixing part 103 can also be fixed to the back of the main body 101.

[0079] In some other embodiments, the display panel 12 may also be a rigid display panel, and the bending portion 102 and the fixing portion 103 may also be flexible circuit boards. The bending portion 102 is connected to the back plate 11 and electrically connected to the display panel 12. The bending portion 102 bends from the edge of the back plate 11 toward the back of the back plate 11, and the bending portion 102 is connected between the back plate 11 and the fixing portion 103. The fixing portion 103 is fixed to the back of the back plate 11, and the first chip 14 is fixed to the side surface of the fixing portion 103 opposite to the main body portion 101.

[0080] The button assembly 30 is used to input commands and is electrically connected to the main circuit board of the electronic device 100. The main circuit board of the electronic device 100 controls the internal functional devices of the electronic device 100 according to the commands input by the button assembly 30. The button assembly 30 can be a volume button assembly, so that the volume of the electronic device 100 can be adjusted by triggering the button assembly 30. Alternatively, the button assembly 30 can also be a power button assembly, so that the electronic device 100 can be turned on, turned off, locked, or woken up by triggering the button assembly 30.

[0081] The button assembly 30 can be located on the side and / or top edge of the first middle frame 211 or the second middle frame 221 to serve as a side button or a top button. The number of button assemblies 30 can be one or more. Figure 1 and Figure 2 In the illustrated embodiment, there are two button assemblies 30, which are arranged alternately along the Y-axis as side buttons. One button assembly 30 is a volume button assembly, and the other is a power button assembly. In some other embodiments, the volume button assembly and the power button assembly may also serve as two top buttons, arranged alternately along the X-axis. In still other embodiments, one of the volume button assembly and the power button assembly may serve as a side button, and the other as a top button; this application does not limit this.

[0082] Based on the above, please refer to Figure 4 and Figure 5 The button assembly 30 includes a button 31, a fingerprint recognition module 32, a first flexible circuit board 33, and a first circuit board 34.

[0083] Button 31 is installed in the first mounting groove 2111d of the first frame 2111 and can move relative to the first frame 2111 along the pressing direction and the rebound direction. It can be understood that the pressing direction of button assembly 30 is from the first opening 2111d1 of the first mounting groove 2111d to the first bottom wall 2111d2, and the rebound direction of button assembly 30 is from the first bottom wall 2111d2 of the first mounting groove 2111d to the first opening 2111d1.

[0084] The first circuit board 34 is located on the front side of the button 31 along the pressing direction of the button 31, that is, the first circuit board 34 is located on the side of the button 31 facing the first bottom wall 2111d2 of the first mounting groove 2111d. The first circuit board 34 is fixed relative to the first frame 2111. In some examples, the first circuit board 34 can be fixed to the first bottom wall 2111d2 of the first mounting groove 2111d by adhesive, snap-fit, or threaded connection. In other examples, the first circuit board 34 can also be fixed within the first accommodating space C1. The first circuit board 34 can be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board.

[0085] The surface of the first circuit board 34 facing the button 31 has a switch element 341. The button 31 is drive-connected to the switch element 341, and the switch element 341 is electrically connected to the main circuit board of the electronic device 100 through the first circuit board 34. It should be noted that the drive-connection here refers to a connection that enables the pressure applied by the user to the button 31 to be transmitted to the switch element 341, thereby changing the electrical connection between the switch element 341 and the first circuit board 34. In some examples, the button 31 can directly contact the switch element 341. In other examples, the button 31 can also contact the switch element 341 indirectly through intermediate parts such as guide rods and / or elastic elements.

[0086] In some examples, the switch 341 can be a dome switch. When a user presses button 31 to apply pressure, the user needs to overcome the force exerted by the dome switch on button 31 to force the dome switch to deform, thereby causing the dome switch to contact the circuit on the first circuit board 34, thus forming a circuit to transmit signals. When the user removes the pressure applied to button 31, the dome switch returns to its original shape, and button 31, under the action of the dome switch's own rebound force, moves towards the first opening 2211d1 of the first mounting groove 2111d to the reset position. That is, button 31 moves to the reset position in the rebound direction opposite to the direction of the pressure applied, and at the same time, the electrical connection between the dome switch and the first circuit board 34 is broken.

[0087] The fingerprint recognition module 32 is positioned behind the button 31 along the pressing direction, specifically on the side of the button 31 away from the first bottom wall 2111d2 of the first mounting groove 2111d. The fingerprint recognition surface of the fingerprint recognition module 32 faces outward from the first opening 2111d1 and is also the pressing surface of the button assembly 30. A portion of the first flexible circuit board 33 is positioned between the fingerprint recognition module 32 and the button 31 and is electrically connected to the fingerprint recognition module 32. The first flexible circuit board 33 is also electrically connected to the main circuit board of the electronic device 100, allowing the main circuit board to control the electronic device 100 to perform relevant operations based on fingerprint commands from the fingerprint recognition module 32. This allows for comparison of the fingerprint touched by the fingerprint recognition module 32 with pre-stored fingerprints to verify the user's identity, improving the convenience and security of the electronic device 100.

[0088] In some examples, the first flexible circuit board 33 and the fingerprint recognition module 32 can be fixedly connected and electrically connected by soldering. In other examples, the first flexible circuit board 33 and the fingerprint recognition module 32 can also be fixedly connected and electrically connected by conductive adhesive. Furthermore, the first flexible circuit board 33 and the button 31 can be fixedly connected by adhesive, snap-fit, or other methods, which are not limited in this application.

[0089] In some other embodiments, the button assembly 30 may not include the fingerprint recognition module 32 and the first flexible circuit board 33. That is, the button assembly 30 is a mechanical press-type side button, and the surface of the button facing outward from the first opening 2111d1 is the pressing surface of the button assembly 30.

[0090] Figure 4 and Figure 5 In the illustrated embodiment, button 31 includes a third surface 311 and a fourth surface 312 facing each other. The third surface 311 and the fourth surface 312 are arranged opposite each other along the height direction of the first frame 2111, that is, the third surface 311 and the fourth surface 312 are arranged opposite each other along the Z-axis direction. The third surface 311 faces the screen 10, and the fourth surface 312 faces away from the screen 10.

[0091] Specifically, the third surface 311 of the button 31 and the bent portion 102 of the screen 10 are arranged opposite each other along the height direction of the first frame 2111, that is, the orthographic projection of the third surface 311 on the plane perpendicular to the Z-axis overlaps with the orthographic projection of the bent portion 102 in the Z-axis direction. Due to manufacturing tolerances, the height of the bent portion 102 protruding from the display interface of the screen 10 may be greater than the thickness of the main body 101. In this case, if the thickness of the electronic device 100 is limited, it is necessary to provide an avoidance hole 2111a1 on the first surface 2111a of the first frame 2111. The avoidance hole 2111a1 penetrates the sidewall of the first mounting groove 2111d to achieve structural avoidance, thereby achieving a thinner and lighter electronic device 100. As a result, during the assembly of the electronic device 100, there is a risk that the button 31 may scratch the bent portion 102 of the screen 10.

[0092] To resolve the above issues, please refer to Figure 7 and Figure 8 , Figure 7 for Figure 1 The diagram shows another cross-sectional structure of the electronic device 100 at line AA. Figure 8 for Figure 7 An enlarged view of the electronic device 100 shown at point E. Figure 7 The illustrated embodiments and Figure 4 The difference in the illustrated embodiment is that the button 31 further includes a recess 313, which is disposed on the third surface 311 and recessed from the third surface 311 toward the fourth surface 312. The recess 313 and the bent portion 102 of the screen 10 are disposed opposite each other along the height direction of the first frame 2111. In this way, sufficient space can be left between the button 31 and the bent portion 102 of the screen 10 along the height direction of the first frame 2111, which can prevent the button 31 from scratching the bent portion 102 of the screen 10 and causing damage to the screen 10 during the assembly of the electronic device 100.

[0093] Based on this, the first frame 2111 includes a retaining portion 2111e, which is located between the recess 313 and the bent portion 102. The surface of the retaining portion 2111e facing away from the screen 10 forms part of the sidewall of the first mounting groove 2111d, and the surface of the retaining portion 2111e facing the screen 10 forms part of the first surface 2111a of the first frame 2111. In this way, the retaining portion 2111e can isolate the button 31 from the bent portion 102 of the screen 10, which can further prevent the button 31 from scratching the bent portion 102 during the assembly of the electronic device 100. In addition, it can also prevent dirt entering from the first opening 2111d1 of the first mounting groove 2111d from corroding the bent portion 102 and causing damage to the screen 10.

[0094] The thickness of the baffle portion 2111e is greater than or equal to 0.3 mm. That is, the distance from each point on the surface of the baffle portion 2111e facing the screen 10 to each point on the surface of the baffle portion 2111e facing away from the screen 10 is greater than or equal to 0.3 mm. For example, the thickness of the baffle portion 2111e can be 0.3 mm, 0.35 mm, or 0.4 mm. This ensures the strength of the baffle portion 2111e and also ensures that the baffle portion 2111e can be formed during the fabrication of the first frame 2111.

[0095] Based on the above, please refer to Figure 8 and Figure 9 , Figure 9 for Figure 7 This is a schematic diagram of the button assembly 30 of the electronic device 100. The recessed portion 313 includes a bottom wall surface 3131 and a side wall surface 3132. The bottom wall surface 3131 faces the bent portion 102 of the screen 10, and the side wall surface 3132 is in contact with the third surface 311 of the button 31. Along the pressing direction, the recessed portion 313 penetrates the front end face of the button 31, that is, the bottom wall surface 3131 of the recessed portion 313 is in contact with the front end face of the button 31. In this way, sufficient space is left between the front end of the button 31 and the bent portion 102 of the screen 10 along the pressing direction, which can prevent the button 31 from scratching the bent portion 102 during the assembly of the electronic device 100, and facilitates the processing to form the recessed portion 313.

[0096] Please continue reading. Figure 9The button 31 also includes a fifth surface 314 and a sixth surface 315. The fifth surface 314 and the sixth surface 315 are arranged opposite each other along the length direction of the first frame 2111, that is, the fifth surface 314 and the sixth surface 315 are arranged opposite each other along the Y-axis direction. The fifth surface 314 is in contact with both the third surface 311 and the fourth surface 312, and the sixth surface 315 is in contact with both the third surface 311 and the fourth surface 312. The recess 313 also penetrates through the fifth surface 314 and the sixth surface 315, that is, the bottom wall surface 3131 of the recess 313 is also in contact with both the fifth surface 314 and the sixth surface 315. This further ensures sufficient space between the front end of the button 31 and the bent portion 102 of the screen 10, preventing the button 31 from scratching the bent portion 102 during the assembly of the electronic device 100, and making it easier to process and form the recess 313.

[0097] In some other embodiments, the length of the bend 102 along the length direction of the first frame 2111 may be less than the length of the button 31. The recess 313 may also not penetrate the fifth surface 314, the sixth surface 315, and the front end surface of the button 31, and the recessed shape of the recess 313 may be adapted to the shape of the bend 102 protruding towards the back side of the main body 101. In still other embodiments, the recess 313 may penetrate only one of the fifth surface 314 and the sixth surface 315. In this case, a portion of the projection of the fifth surface 314 and the sixth surface 315 that is in contact with the bottom wall surface 3131 of the recess 313 onto the screen 10 along the Z-axis is located inside the bend 102, while the projection of the other surface along the Z-axis onto the screen 10 is located outside the bend 102.

[0098] Based on the above, please continue to refer to... Figure 9 Along the length of the first frame 2111, the bottom wall surface 3131 of the recess 313 includes a first region 3131a, a second region 3131b, and a third region 3131c that are connected sequentially. The distance from the second region 3131b to the fourth surface 312 is greater than the distance between the first region 3131a and the fourth surface 312, and the distance from the second region 3131b to the fourth surface 312 is also greater than the distance between the third region 3131c and the fourth surface 312. It should be noted that the distance here refers to the distance from a region on the bottom wall surface 3131 to a reference plane passing through at least one point on the fourth surface 312. This reference plane is a plane perpendicular to the height direction of the first frame 2111 (a plane perpendicular to the Z-axis). For example, the fourth surface 312 can be a plane, and the reference plane is the plane on which the fourth surface 312 is located; the fourth surface 312 can also be an uneven surface, and the reference plane passes through one or more points on the fourth surface 312.

[0099] This increases the local strength of button 31, thereby ensuring the overall strength of button 31. Furthermore, the button portion between the second region 3131b and the fourth surface 312 can be used for a transmission connection with the switch 341 on the first circuit board 34, improving the tactile feedback caused by the eccentricity of the front end of button 31 and enhancing the user experience.

[0100] Based on the above, please refer to Figure 8 and Figure 10 , Figure 10 for Figure 9 The diagram shows an exploded view of the button assembly 30. The button assembly 30 also includes an elastic element 35. The elastic element 35 is disposed on the front end face of the button portion between the second region 3131b and the fourth surface 312, along the pressing direction of the button 31. Specifically, one of the front end face of the button 31 and the rear end face of the elastic element 35 has a groove, and the other has a protrusion that matches the groove. Figure 8 and Figure 10 In the illustrated embodiment, the front end face of the button portion between the second region 3131b and the fourth surface 312 has a protrusion 316, and the rear end face of the elastic member 35 has a groove 351, which is adapted to the protrusion 316. Based on this, the elastic member 35 is located between the button 31 and the switch member 341 on the first circuit board 34 and is in contact with the switch member 341. In this way, by providing the elastic member 35 between the button 31 and the switch member 341, damage to the switch member 341 can be prevented during the transmission of pressure applied by the user to the button assembly 30, and damage to the switch member 341 from external impacts can also be prevented.

[0101] The elastic element 35 can be made of soft rubber, specifically, it can be made of thermoplastic polyurethane rubber (TPU) or polyester rubber (TPEE). In some examples, the button 31 is a metal part, and the elastic element 35 can be injection molded onto the front end surface of the button 31. In other examples, the button 31 is a plastic part, and the elastic element 35 can be integrally formed with the button 31 through a two-color injection molding process. This results in the elastic element 35 having good elasticity and high strength, thus extending its service life. Furthermore, the connection between the elastic element 35 and the button 31 via injection molding ensures high connection strength, preventing the elastic element 35 from detaching from the button 31 and affecting the user's pressing feel, thus ensuring the reliability of the button assembly 30. In other embodiments, the elastic element 35 can also be fixed to the front end surface of the button 31 by adhesive, snap-fit, or other methods; this application does not limit this method.

[0102] Based on the above, please refer to Figure 11 and Figure 12 , Figure 11 for Figure 1 The diagram shows a partial cross-sectional view of the electronic device 100 at the CC line. Figure 12 for Figure 11 The schematic diagram shows a partial cross-sectional structure of the first frame 2111 of the electronic device 100. It should be noted that... Figure 11 and Figure 8 The diagram shows the structure of the same embodiment at different cross-sections. The baffle portion 2111e has a first through hole 2111f, which connects the first mounting groove 2111d and the first surface 2111a. The second region 3131b and the elastic member 35 are correspondingly arranged with the first through hole 2111f along the height direction of the first frame 2111. In this way, the baffle portion 2111e partially has a through hole, which avoids the second region 3131b of the elastic member 35 and the button 31 from intersecting with the bending portion 102 of the screen 10, thus facilitating the thinning and lightening of the electronic device 100.

[0103] Based on this, please continue reading Figure 11 and Figure 12 The support device 20 also includes a first protective film 24, which is disposed at and covers the first through hole 2111f. Specifically, the first protective film 24 can be adhered to the surface of the partition portion 2111e facing the screen 10. The first protective film 24 can be a polyimide (PI) film or a polyethylene terephthalate (PET) film. In this way, dirt entering from the first opening 2111d1 of the first mounting groove 2111d can be prevented from corroding the bending portion 102 through the first through hole 2111f, thus preventing damage to the screen 10.

[0104] Please continue reading. Figure 10 and Figure 11 The button 31 includes a button body 317 and two hook-on portions 318. The button body 317 includes a first portion 3171, a second portion 3172, and a third portion 3173 connected sequentially along the length direction of the first frame 2111, that is, the first portion 3171, the second portion 3172, and the third portion 3173 are arranged along the Y-axis direction. The aforementioned elastic member 35 is disposed on the front end surface of the second portion 3172 along the pressing direction of the button 31.

[0105] The two mounting portions 318 include a first mounting portion 3181 and a second mounting portion 3182. Along the pressing direction of the button 31, the two mounting portions 318 are disposed on the front end face of the button body portion 317. Specifically, the first mounting portion 3181 is disposed on the front end face of the first portion 3171 of the button body portion 317, and the second mounting portion 3182 is disposed on the front end face of the third portion 3173 of the button body portion 317, meaning the two mounting portions 318 are spaced apart along the length direction of the first frame 2111. In some examples, the first mounting portion 3181, the second mounting portion 3182, and the button body portion 317 can be an integral structural component. In other examples, the first mounting portion 3181 and the second mounting portion 3182 can also be fixed to the button body portion 317 by snap-fit, adhesive, threaded connection, etc., and this application does not limit this.

[0106] Figure 10 and Figure 11 In the illustrated embodiment, the first connecting portion 3181 is approximately L-shaped and includes a first connecting segment 3181a and a second connecting segment 3181b. One end of the first connecting segment 3181a is connected to the front end face of the first portion 3171 of the button body portion 317, and the other end extends away from the button body portion 317 along the pressing direction of the button 31. One end of the second connecting segment 3181b is connected to the end of the first connecting segment 3181a away from the button body portion 317, and the other end extends away from the second connecting portion 3182. The second connecting portion 3182 is approximately L-shaped and includes a third connecting segment 3182a and a fourth connecting segment 3182b. One end of the third connecting segment 3182a is connected to the front end face of the third portion 3173 of the button body portion 317, and the other end of the third connecting segment 3182a extends away from the button body portion 317 along the pressing direction of the button 31. One end of the fourth connecting segment 3182b is connected to one end of the third connecting segment 3182a away from the button body 317, and the other end extends away from the first hook part 3181.

[0107] The first mounting portion 3181 and the second mounting portion 3182 are mounted on the first frame 2111. Specifically, the first mounting groove 2111d has a first limiting portion 2111d3 on one side wall and a second limiting portion 2111d4 on the other side wall, which are arranged along the length of the first frame 2111d. One end of the first limiting portion 2111d3 is fixed to the aforementioned side wall of the first mounting groove 2111d, and the other end extends toward the second limiting portion 2111d4. One end of the second limiting portion 2111d4 is fixed to the aforementioned other side wall of the first mounting groove 2111d, and the other end extends toward the first limiting portion 2111d3. That is, the first limiting portion 2111d3 and the second limiting portion 2111d4 extend toward each other along the Y-axis. Based on this, the first connecting part 3181 is connected to the first limiting part 2111d3, and the second connecting part 3182 is connected to the second limiting part 2111d4.

[0108] Based on this, a portion of the front end of the button body 317 facing the bending portion 102 forms a part of the bottom wall surface 3131 of the recessed portion 313, and the surface of the hook portion 318 facing the bending portion 102 forms another portion of the bottom wall surface 3131 of the recessed portion 313. That is, a part of the recessed portion 313 is provided on the button body 317, and another part is provided on the hook portion 318. Specifically, the first region 3131a of the bottom wall surface 3131 of the recessed portion 313 is located on the first portion 3171 and the first hook portion 3181, the second region 3131b of the bottom wall surface 3131 of the recessed portion 313 is located on the second portion 3172, and the third region 3131c of the recessed portion 313 is located on the third portion 3173 and the second hook portion 3182. In this way, the mounting part 318 can mount the button assembly 30 onto the first frame 2111 to prevent the button assembly 30 from falling off the first frame 2111. At the same time, in the height direction of the first frame 2111, sufficient space is reserved between the button 31 and the bending part 102 to prevent the button 31 from scratching the bending part 102 during the assembly of the electronic device 100.

[0109] Please see Figures 13-15 , Figure 13 for Figure 1 This is a schematic diagram of another cross-sectional structure of the electronic device 100 at line AA. Figure 14 for Figure 13 An enlarged view of the electronic device 100 at point D. Figure 15 for Figure 13 A schematic diagram of the button assembly 30 of the electronic device 100 shown. Figures 13-15 The illustrated embodiments and Figure 8 and Figure 9The difference in the illustrated embodiment is that the bottom wall surface 3131 of the recess 313 is flat. In this case, the blocking part 2111e completely isolates the button 31 and the bent part 102 of the screen 10. This makes it easier to form the recess 313 on the button 31, reducing the design and manufacturing difficulty of the button 31.

[0110] Please see Figure 16 and Figure 17 , Figure 16 for Figure 1 This is another partial structural diagram of the electronic device 100 at the CC line. Figure 17 for Figure 16 A schematic diagram of the button assembly 30 of the electronic device 100 shown. Figure 16 and Figure 17 The illustrated embodiments and Figure 8 and Figure 9 The difference in the illustrated embodiment is that the button 31 further includes a first protrusion 319 and a second protrusion 320. The first protrusion 319 is disposed on the first portion 3171 of the button body 317 and located on the bottom wall surface 3131 of the recessed portion 313, extending to the first hook portion 3181. The second protrusion 320 is disposed on the third portion 3173 of the button body 317 and located on the bottom wall surface 3131 of the recessed portion 313, extending to the second hook portion 3182. Figure 16 and Figure 17 In the illustrated embodiment, the first protruding ridge 319 extends from the side wall surface 3132 of the recessed portion 313 to the front end surface of the first hook portion 3181 along the pressing direction of the button 31, and the second protruding ridge 320 extends from the side wall surface 3132 of the recessed portion 313 to the front end surface of the second hook portion 3182 along the pressing direction of the button 31. In other embodiments, the extending directions of the first protruding ridge 319 and the second protruding ridge 320 may also form a certain angle with the pressing direction of the button 31.

[0111] In this way, the first protrusion 319 and the second protrusion 320 can ensure the strength of the first hook portion 3181 and the second hook portion 3182 of the button 31, thereby ensuring the overall strength of the button 31 and the reliability of the button assembly 30. In addition, the distance between the button 31 and the blocking portion 2111e at the first hook portion 3181 and the second hook portion 3182 can be increased to prevent the button assembly 30 from wobbling or shaking during the assembly of the button assembly 30 to the first frame 2111, thus preventing the assembly from becoming more difficult.

[0112] In some examples, the first protrusion 319, the second protrusion 320, the button body 317, the first hook part 3181, and the second hook part 3182 can be an integral structural component. In other examples, the first protrusion 319 and the second protrusion 320 can also be fixed to the button body 317 by means of adhesive, snap-fit, etc., and this application does not limit this.

[0113] Please see Figure 17 and Figure 18 , Figure 18 for Figure 17 The diagram shows a partial cross-sectional view of the first frame 2111 of the electronic device 100. The baffle portion 2111e has a second through hole 2111g and a third through hole 2111h, both of which connect to the first mounting groove 2111d and the first surface 2111a. Along the height direction of the first frame 2111, a first protruding ridge 319 is positioned opposite to the second through hole 2111g, and a second protruding ridge 320 is positioned opposite to the third through hole 2111h. This partial opening of through holes in the baffle portion 2111e avoids the first protruding ridge 319, the second protruding ridge 320, and the bending portion 102 of the screen 10, thus facilitating the thinning and lightening of the electronic device 100.

[0114] Based on this, please continue reading Figure 17 and Figure 18 The support device 20 also includes a second protective film 25 and a third protective film 26. The second protective film 25 is disposed at and covers the second through hole 2111g. The third protective film 26 is disposed at and covers the third through hole 2111h. Specifically, the second protective film 25 and the third protective film 26 can be adhered to the surface of the partition portion 2111e facing the screen 10. The second protective film 25 and the third protective film 26 can be polyimide (PI) films or polyethylene terephthalate (PET) films. In this way, dirt entering from the first opening 2111d1 of the first mounting groove 2111d can be prevented from corroding the bending portion 102 through the second through hole 2111g and the third through hole 2111h, thus preventing damage to the screen 10.

[0115] Based on the above embodiments, along the height direction of the first frame 2111, the thickness of the button portion between the recess 313 and the fourth surface 312 is greater than or equal to 0.4 mm. In some examples, the button 31 is a metal part, and the thickness of the button portion between the recess 313 and the fourth surface 312 can be 0.4 mm, 0.6 mm, 0.8 mm, or 1.0 mm. In other examples, the button 31 is a plastic part, and the thickness of the button portion between the recess 313 and the fourth surface 312 can be 0.6 mm, 0.8 mm, or 1.0 mm. In this way, while ensuring sufficient space between the button 31 and the bending portion 102 of the screen 10, the overall strength of the button 31 can be guaranteed, thereby ensuring the reliability of the button assembly 30.

[0116] Based on the above embodiment, along the height direction of the first frame 2111, the thickness of the button portion between the third surface 311 and the fourth surface 312 is greater than or equal to 1.2 mm. For example, the thickness of the button portion between the third surface 311 and the fourth surface 312 can be 1.2 mm, 1.3 mm, or 1.4 mm. This ensures that the end face of the button 31 facing the fingerprint recognition module 32 has a sufficiently large area to reinforce the chip of the fingerprint recognition module 32 and provide sufficient support for the first flexible circuit board 33, preventing insufficient reinforcement of the fingerprint recognition module 32 by the button 31 from damaging the chip of the fingerprint recognition module 32.

[0117] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A foldable electronic device, characterized in that, The electronic device includes a first frame, a first back cover, a screen, a button assembly, and a first circuit board, wherein: The first frame includes a first surface, a second surface, and an outer surface. The first surface and the second surface are disposed opposite to each other. The outer surface is connected to the first surface and the second surface. The outer surface is provided with a first mounting groove. The screen is located on the side of the first surface away from the second surface, and the first back cover is located on the side of the second surface away from the first surface; The button assembly includes a fingerprint recognition module, a button, and a first flexible circuit board. The button is mounted in the first mounting slot and can move along a first direction. A portion of the first flexible circuit board is disposed between the fingerprint recognition module and the button, wherein the first direction is perpendicular to the outer surface. The button includes a first hook-up portion, a second hook-up portion, a third surface, a fourth surface, and a recessed portion. The first hook-up portion and the second hook-up portion are spaced apart along a second direction. The recessed portion is disposed on the third surface and recessed from the third surface to the fourth surface. The second direction is the length direction of the first frame. Along the second direction, the bottom wall surface of the recess includes a first region, a second region, and a third region that are connected in sequence. The distance from the second region to the fourth surface is greater than the distance from the first region to the fourth surface, and the distance from the second region to the fourth surface is greater than the distance from the third region to the fourth surface. The first circuit board is provided with a switch, and the portion of the button located between the second region and the fourth surface is kinetically connected to the switch.

2. The electronic device according to claim 1, characterized in that, Along the first direction, the recessed portion penetrates the front end face of the button.

3. The electronic device according to claim 1 or 2, characterized in that, The button further includes a fifth surface and a sixth surface, which are disposed opposite to each other along a second direction. The recessed portion penetrates the fifth surface and the sixth surface, wherein the second direction is the length direction of the first frame.

4. The electronic device according to claim 1 or 2, characterized in that, The electronic device also includes an elastic element disposed on the front end face of the button.

5. The electronic device according to claim 4, characterized in that, The switch is disposed on the surface of the first circuit board facing the button, and the elastic element is in contact with the switch.

6. The electronic device according to claim 1 or 2, characterized in that, The button also includes a button body, which includes a first part, a second part, and a third part; the first part, the second part, and the third part are connected sequentially along the second direction.

7. The electronic device according to claim 6, characterized in that, The first hook-on part is disposed in the first part, and the second hook-on part is disposed in the third part.

8. The electronic device according to claim 1 or 2, characterized in that, The electronic device also includes a main circuit board, and the first flexible circuit board is electrically connected to the fingerprint recognition module and the main circuit board.

9. The electronic device according to claim 1 or 2, characterized in that, The first mounting slot includes a first bottom wall, and the fingerprint recognition module is disposed on the side of the button away from the first bottom wall.

10. The electronic device according to claim 1 or 2, characterized in that, The third surface faces the screen, and the fourth surface faces away from the screen.

11. The electronic device according to claim 10, characterized in that, The screen includes a main body and a bent portion, the bent portion being bent from the edge of the main body toward the back of the main body.

12. The electronic device according to claim 11, characterized in that, Along a third direction, the recessed portion is disposed opposite to the bent portion, wherein the third direction is the height direction of the first frame.

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