Electronic device

Abstract

The invention provides electronic equipment which comprises a display screen, a middle frame and a decoration piece, and the display screen is provided with a display area and a non-display area arranged around the periphery of the display area; the middle frame comprises a frame surrounding the periphery of the edge of the display screen; the decorative sheet extends from the frame to the direction of the display screen so as to cover at least part of a non-display area on one side of the display surface of the display screen; in the thickness direction of the display screen, the surface, deviating from the display screen, of the decorative sheet does not protrude out of the frame. According to the electronic equipment provided by the invention, the decoration sheet extends from the frame to the direction of the display screen so as to cover at least part of the non-display area on one side of the display surface of the display screen, and the decoration sheet does not protrude out of the frame, so that the influence of the decoration sheet on the overall thickness of the electronic equipment can be ignored, and the effect of reducing the overall thickness of the electronic equipment is achieved.

Description

Technical Field

[0001] This application relates to the technical field of the structure of electronic devices, and specifically relates to an electronic device. Background Art

[0002] Electronic devices such as mobile phones achieve display and interaction functions through a display screen. Among them, around the display screen, plastic decorative parts are generally overlapped with the black edge of the display screen to protect the display screen.

[0003] However, since the plastic decorative parts generally protrude from the middle frame of the electronic device, and in order to ensure the manufacturability of the plastic decorative parts, the plastic decorative parts have a certain wall thickness in the thickness direction of the display screen, which further increases the thickness of the electronic device. For foldable electronic devices, such as foldable mobile phones, in the folded state, the thickness of the electronic device increases more, which is not conducive to the thin and light design of the electronic device. Summary of the Invention

[0004] An embodiment of this application provides an electronic device, which includes a display screen, a middle frame, and a decorative sheet. The display screen has a display area and a non-display area disposed around the periphery of the display area; the middle frame includes a frame disposed around the outer periphery of the edge of the display screen; the decorative sheet extends from the frame towards the display screen to cover at least part of the non-display area on the display surface side of the display screen; wherein, in the thickness direction of the display screen, the surface of the decorative sheet facing away from the display screen does not protrude from the frame.

[0005] For the electronic device provided by the embodiment of this application, by extending the decorative sheet from the frame towards the display screen to cover at least part of the non-display area on the display surface side of the display screen, and the decorative sheet does not protrude from the frame, the influence of the decorative sheet on the overall thickness of the electronic device can be ignored, so as to achieve the effect of reducing the overall thickness of the electronic device. Brief Description of the Drawings

[0006] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0007] Figure 1 is a schematic structural diagram of the electronic device in the unfolded state in some embodiments of this application;

[0008] Figure 2 is Figure 1 a schematic structural diagram of the electronic device in the folded state in the embodiment;

[0009] Figure 3 is Figure 1 Schematic diagram of a partial sectional structure of area A of the electronic device in the embodiment along the B-B direction;

[0010] Figure 4 is Figure 1 Schematic diagram of a partially enlarged structure of area C of the electronic device in the embodiment;

[0011] Figure 5 is a top view structure diagram of the electronic device in some embodiments of the present application;

[0012] Figure 6 is Figure 5 Schematic diagram of a partially enlarged structure of the top area of the electronic device in the embodiment;

[0013] Figure 7 is Figure 5 Schematic diagram of a partially enlarged structure of the bottom area of the electronic device in the embodiment;

[0014] Figure 8 is Figure 6 Schematic diagram of a partially enlarged structure of area D of the electronic device in the embodiment;

[0015] Figure 9 is a structure diagram of the electronic device when folded in some embodiments of the present application;

[0016] Figure 10 is a partial structure diagram of the electronic device in some other embodiments of the present application;

[0017] Figure 11 is a schematic diagram of the structural composition of the mobile terminal device in some embodiments of the present application.

[0018] Reference numerals:

[0019] 100 - Electronic device; 10 - Display screen; 20 - Middle frame 20; 30 - Rotating shaft;

[0020] 20a - First middle frame; 20b - Second middle frame; 21 - Middle plate; 22 - Frame;

[0021] 23 - Decorative piece; 231 - First decorative piece; 233 - Second decorative piece; 235 - Third decorative piece;

[0022] 221 - First frame; 222 - Second frame; 223 - Third frame; 224 - Fourth frame;

[0023] 111 - First black edge; 112 - Second black edge; 113 - Third black edge; 114 - Fourth black edge;

[0024] 101 - Display area; 102 - Non-display area;

[0025] 116 - First arc edge; 117 - Second arc edge; 118 - Third arc edge; 119 - Fourth arc edge;

[0026] 226 - First arc frame; 227 - Second arc frame; 228 - Third arc frame; 229 - Fourth arc frame;

[0027] 2261 - Top of the first frame; 211 - First bearing surface; 212 - Second bearing surface. Detailed implementation mode

[0028] The following combines the accompanying drawings and embodiments to make a further detailed description of the present application. It is specifically pointed out that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only partial embodiments of the present application rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0029] Referring to "embodiments" herein means that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0030] As used herein, an "electronic device" (or simply referred to as a "terminal") includes, but is not limited to, a device configured to receive / transmit communication signals via a wired connection (such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection, and / or another data connection / network) and / or via a wireless interface (such as for a cellular network, Wireless Local Area Network (WLAN), digital television network such as DVB-H network, satellite network, AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface can be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communication System (PCS) terminals that can combine cellular radiotelephone with data processing, facsimile, and data communication capabilities; PDAs that can include radiotelephones, pagers, Internet / intranet access, web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palm receivers or other electronic devices including radiotelephone transceivers. A mobile phone is an electronic device configured with a cellular communication module.

[0031] Please refer to Figure 1 and Figure 2 , Figure 1 which are schematic structural diagrams of the electronic device 100 in an unfolded form in some embodiments of the present application, Figure 2 and Figure 1 which are schematic structural diagrams of the electronic device 100 in a folded form in the embodiments. The electronic device 100 may include a display screen 10, a middle frame 20, and a rotating shaft 30. Among them, the rotating shaft 30 may mainly cooperate with the middle frame 20 to support the display screen 10; and enable the display screen 10 to be folded. For example: the rotating shaft 30 and the middle frame 20 may be hinged so that the two can rotate relative to each other; the display screen 10 is connected to the middle frame 20 by one or a combination of assembly methods such as clamping, gluing, welding, etc., so that the display screen 10 and the middle frame 20 can rotate relative to the rotating shaft 30 together, thereby realizing the folding of the display screen 10. Further, structural components such as a battery module, an antenna module, a camera module, a fingerprint module, etc. ( Figures 1 to 2 not shown in all of them) may be provided inside the electronic device 100 (specifically, between the display screen 10 and the middle frame 20), so that the electronic device 100 can realize other corresponding functions, thereby meeting the usage requirements of users.

[0032] Among them, the electronic device 100 in the embodiments of the present application may be a portable device such as a mobile phone, a laptop computer, a tablet computer, a wearable device, etc. The present application takes the electronic device 100 as a mobile phone as an example for exemplary illustration. It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative position relationship, movement conditions, etc. between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly. Among them, Figure 1 the direction indicated by the arrow X in Figure 1 may be simply regarded as the long axis direction of the electronic device, Figure 1 the direction indicated by the arrow Y in

[0033] may be simply regarded as the short axis direction of the electronic device, and Figure 1 the direction indicated by the arrow Z in

[0033] may be simply regarded as the thickness direction of the electronic device. Generally, the size of the electronic device in the long axis direction is greater than its size in the short axis direction. Of course, in other embodiments, the size of the electronic device in the long axis direction may be the same as its size in the short axis direction. In this case, the projection of the electronic device on the XY plane is a square.The display screen 10 can be an LCD (Liquid Crystal Display) screen, or an OLED (Organic Light-Emitting Diode), QLED (Quantum Dot Light Emitting Diode) screen, or also a Mini-LED, Micro-LED screen. In this application, the display screen 10 being an OLED screen is taken as an example for exemplary illustration. The edge of the touch screen 10 extends outward in a curved shape to serve as the edge of the electronic device 100. It can be understood that, in addition, in some embodiments, the display screen 10 can be a curved display screen, that is, at least two edges of the display screen 10 that extend outward in a curved shape. For example, three of the four edges of the display screen 10 extend outward in a curved shape, or all four edges of the display screen 10 extend outward in a curved shape and serve as the edge of the display screen 10.

[0034] As Figure 1 and Figure 2 shown, the middle frame 20 can include a first middle frame 20a and a second middle frame 20b that are rotatably connected. The first middle frame 20a and the second middle frame 20b can be respectively connected to the rotating shaft 30 so that the first middle frame 20a and the second middle frame 20b can be switched between the unfolded form and the folded form through the rotating shaft 30. In other words, the second middle frame 20b is rotatably connected to the first middle frame 20a, and the first middle frame 20a and the second middle frame 20b can rotate relative to each other so that the electronic device 100 can be switched between the folded form and the unfolded form. Further, the folding angle at which the first middle frame 20a and the second middle frame 20b can be folded can be 0 to 180°. Among them, when the above folding angle is equal to 0°, it can be considered that the electronic device 100 is in the folded form; when the above folding angle θ is equal to 180°, it can be considered that the electronic device 100 is in the unfolded form; and when the above folding angle θ is between 0° and 180°, it can be considered that the electronic device 100 is in the semi-folded form.

[0035] It should be noted that when the electronic device 100 is in the above folded form, it can be that the display screen 10 is located between the first middle frame 20a and the second middle frame 20b, that is, the display screen 10 can be hidden, commonly known as "inner folding"; it can also be that the display screen 10 covers the first middle frame 20a and the second middle frame 20b, that is, the display screen 10 can be externally displayed, commonly known as "outer folding". Of course, in some other embodiments, the electronic device 100 can also cancel the rotating shaft 30, that is, the first middle frame 20a and the second middle frame 20b are directly connected and can be folded. For example, the connecting portion of the first middle frame 20a and the second middle frame 20b can be made of a bendable material.

[0036] In addition, in some embodiments, the electronic device 100 can be a non-foldable electronic device, that is, the electronic device 100 includes a display screen 10 and a middle frame 20, where the middle frame 20 is used to support the display screen 10. For example, the display screen 10 is connected to the middle frame 20 by one or a combination of assembly methods such as snap connection, adhesive bonding, and welding. Further, structural components such as a battery module, an antenna module, a camera module, and a fingerprint module can be provided inside the electronic device 100 (specifically, between the display screen 10 and the middle frame 20), so that the electronic device 100 can implement other corresponding functions to meet the usage needs of users.

[0037] Wherein, when the electronic device 100 is a foldable electronic device, the display screen 10 is a flexible screen; when the electronic device 100 is a non-foldable electronic device, the flexible screen 10 is a non-flexible screen.

[0038] It should be noted that the electronic device in the following embodiments is mainly described by taking a foldable electronic device as an example, such as a folding screen mobile phone. Specifically, the folding screen mobile phone has gradually become the development trend of the future whole machine. Its main advantages are that it combines entertainment and office work and is easy to carry, meeting the current consumers' demand for the unity of portability and diverse functions. Among them, the folding screen mobile phone generally has folding methods such as inward folding and outward folding. For the folding screen mobile phone with the inward folding method, after folding, the display surfaces of the display screen approach each other along the folding area, that is, the display screen is in an inward folding form. For the folding screen mobile phone with the outward folding method, after folding, the display surfaces of the display screen deviate from each other along the folding area, that is, the display screen is in an outward folding form.

[0039] Referring to Figure 3 and Figure 4 , Figure 3 is Figure 1 a schematic partial cross-sectional structure diagram of area A of the electronic device 100 in the embodiment along the B-B direction, Figure 4 is Figure 1 a schematic enlarged partial structure diagram of area C of the electronic device 100 in the embodiment. The display screen 10 can have a display area 101 and a non-display area 102 provided around the periphery of the display area 101. Among them, the non-display area 102 of the display screen 10 can be understood as the black edge area of the display screen 10. The middle frame 20 can include a middle plate 21 and a frame 22 extending from the edge of the middle plate 21. The middle plate 21 can be configured to carry the display screen 10, and the frame 22 can be provided around the periphery of the display screen 10. The display screen 10 is connected to the middle plate 21 by one or a combination of assembly methods such as snap connection, adhesive bonding, and welding. For example, the display screen 10 can be adhered to the middle plate 21.

[0040] The frame 22 is disposed around the periphery of the display screen 10, that is, the frame 22 surrounds the outer edge of the display screen 10 and is spaced from the edge of the display screen 10. Optionally, the frame 22 may protrude from the display screen 10 in the Z direction, that is, the thickness direction of the display screen 10. In the thickness direction of the display screen 10, the frame 22 has a portion protruding from the display screen 10 to provide protection in the circumferential direction of the display screen 10.

[0041] Furthermore, the electronic device 100 may further include a decorative sheet 23 disposed on a side of the frame 22 close to the display screen 10. The decorative sheet 23 extends from the frame 22 towards the direction close to the display screen 10 to cover at least a part of the non-display area 102 of the display screen 10 on the display surface side of the display screen 10.

[0042] In other words, the decorative sheet 23 is disposed on the display surface side of the display screen 10, that is, the decorative sheet 23 is disposed on a side of the display surface of the display screen 10 facing away from the non-display surface. In the thickness direction of the display screen 10, the surface of the decorative sheet 23 facing away from the display screen 10 does not protrude from the frame 22.

[0043] Wherein, the decorative sheet 23 and the frame 22 may be an integrally formed structural member. For example, a structural body having the decorative sheet 23 and the frame 22 may be directly formed by an integrally formed process such as injection molding. Of course, in other embodiments, the decorative sheet 23 and the frame 22 may be formed separately and then assembled into one body.

[0044] Optionally, when the electronic device 100 is a foldable electronic device, that is, the middle frame 20 includes a first middle frame 20a and a second middle frame 20b, both the first middle frame 20a and the second middle frame 20b may include a middle plate 21 and a frame 22. The frame 22 of the first middle frame 20a and the frame 22 of the second middle frame 20b are located on opposite sides of the rotating shaft 30 and respectively surround the outer edge of the flexible screen 10.

[0045] As described above, in the thickness direction of the display screen 10, the frame 22 has a portion protruding from the display screen 10, and the frame 22 is spaced from the display screen 10. In the embodiment of the present application, by disposing the decorative sheet 23 that does not protrude from the frame 22 on a side of the frame 22 close to the flexible screen 10, and the decorative sheet 23 can cover at least a part of the non-display area 102 of the flexible screen 10 and at least a part of the gap between the frame 22 and the flexible screen 10, not only can at least a part of the edge of the flexible screen 10 be protected and the flexible screen 10 be prevented from falling and warping, but also the overall thickness of the electronic device 100 can be reduced in the thickness direction of the flexible screen 10, that is, the Z direction.

[0046] In other words, in the technical solution of a conventional electronic device, in the thickness direction of the display screen, the frame has a portion protruding from the display screen, and the frame is spaced apart from the display screen. At this time, a decorative member protruding from the frame is provided on the frame to protect at least a part of the edge of the flexible screen and prevent the flexible screen from falling and warping. However, in this technical solution, the thickness of the decorative member is added to the overall thickness of the electronic device. Compared with the fact that the thickness of the decorative sheet in the above embodiments of the present application is not added to the overall thickness of the electronic device, the overall thickness of the electronic device in the above embodiments of the present application is significantly smaller than that of the conventional electronic device.

[0047] Please refer to Figure 5 , Figure 5 which is a top view structural schematic diagram of the electronic device 100 in some embodiments of the present application. The frame 22 may include a first frame 221 and a third frame 223 that are oppositely arranged, and a second frame 222 and a fourth frame 224 that are oppositely arranged. The first frame 221 is respectively adjacent to the second frame 222 and the fourth frame 224, that is, the first frame 221 is disposed between the second frame 222 and the fourth frame 224. The third frame 223 is respectively adjacent to the second frame 222 and the fourth frame 224, that is, the third frame 223 is disposed between the second frame 222 and the fourth frame 224. The first frame 221, the second frame 222, the third frame 223, and the fourth frame 224 are sequentially bent and connected to enclose a frame 22 having an annular structure. Among them, the first frame 221 can be understood as the top frame of the electronic device 100, the third frame 223 can be understood as the bottom frame of the electronic device 100, and the second frame 222 and the fourth frame 224 can be understood as the two side frames of the electronic device 100.

[0048] Optionally, when the electronic device 100 is a foldable electronic device, the first frame 221 is formed on the first middle frame 20a, the third frame 223 is formed on the second middle frame 20b, a part of the second frame 222 is formed on the first middle frame 20a, and another part is formed on the second middle frame 20b. A part of the fourth frame 224 is formed on the first middle frame 20a, and another part is formed on the second middle frame 20b. That is, the second frame 222 can be divided into two parts formed on the first middle frame 20a and the second middle frame 20b respectively with the rotation axis 30 as the boundary, and the fourth frame 224 can be divided into two parts formed on the first middle frame 20a and the second middle frame 20b respectively with the rotation axis 30 as the boundary.

[0049] The non-display area 102 of the flexible screen 10 may include a first black edge 111 and a third black edge 113 that are oppositely arranged, and a second black edge 112 and a fourth black edge 114 that are oppositely arranged. The first black edge 111 is respectively adjacent to the second black edge 112 and the fourth black edge 114, that is, the first black edge 111 is disposed between the second black edge 112 and the fourth black edge 114. The third black edge 113 is respectively adjacent to the second black edge 112 and the fourth black edge 114, that is, the third black edge 113 is disposed between the second black edge 112 and the fourth black edge 114. The first black edge 111, the second black edge 112, the third black edge 113, and the fourth black edge 114 are sequentially bent and connected to enclose a non-display area 102 that surrounds the display area 101 and has an annular structure. Among them, the first frame 221 is disposed on the side of the first black edge 111 facing away from the display area 101 and is spaced apart from the first black edge 111. The second frame 222 is disposed on the side of the second black edge 112 facing away from the display area 101 and is spaced apart from the second black edge 112. The third frame 223 is disposed on the side of the third black edge 113 facing away from the display area 101 and is spaced apart from the third black edge 113. The fourth frame 224 is disposed on the side of the fourth black edge 114 facing away from the display area 101 and is spaced apart from the fourth black edge 114.

[0050] Among them, the first black edge 111 and the second black edge 112 may be integrally extended with the adjacent two side edges of the display area 101 respectively. The second black edge 112 and the third black edge 113 may be integrally extended with the adjacent two side edges of the display area 101 respectively. The third black edge 113 and the fourth black edge 114 may be integrally extended with the adjacent two side edges of the display area 101 respectively. The fourth black edge 114 and the first black edge 111 may be integrally extended with the adjacent two side edges of the display area 101 respectively. That is, the first black edge 111, the second black edge 112, the third black edge 113, and the fourth black edge 114 are sequentially connected and disposed on the outer side of the periphery of the display area 101.

[0051] In an embodiment, the decorative sheet 23 is disposed on the side of the first frame 221 close to the display screen 10 and extends toward the display screen 10, so that the decorative sheet 23 covers at least part of the first black edge 111. Among them, the opposite ends of the decorative sheet 23 respectively extend to the sides of the second frame 222 and the fourth frame close to the display screen 10.

[0052] In an embodiment, the decorative sheet 23 is disposed on the side of the third frame 223 close to the display screen 10 and extends toward the display screen 10, so that the decorative sheet 23 covers at least part of the third black edge 113. Among them, the opposite ends of the decorative sheet 23 respectively extend to the sides of the second frame 222 and the fourth frame close to the display screen 10.

[0053] Such as Figure 5As shown, the decorative sheet 23 may include a first decorative sheet 231 and a second decorative sheet 233 that are oppositely arranged. The first decorative sheet 231 may be disposed on one side of the first frame 221 close to the display screen 10 and extend toward the display screen 10, so that the first decorative sheet 231 covers at least a part of the first black edge 111. The second decorative sheet 233 may be disposed on one side of the third frame 223 close to the display screen 10 and extend toward the display screen 10, so that the third decorative sheet 233 covers at least a part of the third black edge 113. Among them, the opposite ends of the first decorative sheet 231 respectively extend to one sides of the second frame 222 and the fourth frame close to the display screen 10. The opposite ends of the second decorative sheet 233 respectively extend to one sides of the second frame 222 and the fourth frame close to the display screen 10.

[0054] Among them, in the thickness direction of the display screen 10, the surface of the decorative sheet 23 (i.e., the first decorative sheet 231 and the second decorative sheet 233) facing away from the display screen 10 does not protrude beyond the frame 22. Optionally, in the thickness direction of the display screen 10, the heights of the parts of the first frame 221, the second frame 222, the third frame 223, and the fourth frame 224 protruding beyond the display screen 10 may be the same. Of course, in other embodiments, in the thickness direction of the display screen 10, the heights of the parts of the first frame 221, the second frame 222, the third frame 223, and the fourth frame 224 protruding beyond the display screen 10 may be different. At this time, the surface of the first decorative sheet 231 facing away from the display screen 10 does not protrude beyond the first frame 221, the second frame 222, and the fourth frame 224, and the surface of the second decorative sheet 233 facing away from the display screen 10 does not protrude beyond the second frame 222, the third frame 223, and the fourth frame 224. By the above method, the thickness of the decorative sheet in the embodiments of the present application will not be superimposed on the overall thickness of the electronic device, that is, the thickness of the decorative article in the embodiments of the present application will not have a great impact on the overall thickness of the electronic device.

[0055] As described above, when the electronic device 100 is a foldable electronic device, the middle frame 20 includes a first middle frame 20a and a second middle frame 20b that are rotatably connected, that is, the first middle frame 20a and the second middle frame 20b can be rotatably connected through the rotating shaft 30. The first frame 221 is formed on the first middle frame 20a and is spaced apart from the rotating shaft 30, and the third frame 223 is formed on the second middle frame 20b and is spaced apart from the rotating shaft 30. In other words, in the unfolded state of the electronic device 100, the first frame 221 and the third frame 223 are located on opposite sides of the rotating shaft 30; in the folded state of the electronic device 100, the first frame 221 and the third frame 223 are located on the same side of the rotating shaft 30.

[0056] Please refer to Figure 6 and Figure 7 , Figure 6 is Figure 5Schematic diagram of a partially enlarged structure of the top region of the electronic device 100 in the embodiment Figure 7 is Figure 5 Schematic diagram of a partially enlarged structure of the bottom region of the electronic device 100 in the embodiment. The non-display area 102 of the display screen 10 may further include a first arc edge 116 connected between the first black edge 111 and the second black edge 112, a second arc edge 117 connected between the second black edge 112 and the third black edge 113, a third arc edge 118 connected between the third black edge 113 and the fourth black edge 114, and a fourth arc edge 119 connected between the fourth black edge 114 and the first black edge 111. Among them, the first arc edge 116, the second arc edge 117, the third arc edge 118, and the fourth arc edge 119 respectively correspond to the corner positions of the display area 101 and are integrally extended with the display area 101. Further, the first black edge 111 and the second black edge 112 are bent and connected through the first arc edge 116. The second black edge 112 and the third black edge 113 are bent and connected through the second arc edge 117. The third black edge 113 and the fourth black edge 114 are bent and connected through the third arc edge 118. The fourth black edge 114 and the first black edge 111 are bent and connected through the fourth arc edge 119.

[0057] The frame 22 may further include a first arc frame 226 connected between the first frame 221 and the second frame 222, a second arc frame 227 connected between the second frame 222 and the third frame 223, a third arc frame 228 connected between the third frame 223 and the fourth frame 224, and a fourth arc frame 229 connected between the fourth frame 224 and the first frame 221. Among them, the first arc frame 226, the second arc frame 227, the third arc frame 228, and the fourth arc frame 229 respectively correspond to the corner positions of the display area 101. Among them, the first arc frame 226 is provided on the side of the first arc edge 116 away from the display area 101. The second arc frame 227 is provided on the side of the second arc edge 117 away from the display area 101. The third arc frame 228 is provided on the side of the third arc edge 118 away from the display area 101. The fourth arc frame 229 is provided on the side of the fourth arc edge 119 away from the display area 101. Further, the first frame 221 and the second frame 222 are bent and connected through the first arc frame 226. The second frame 222 and the third frame 223 are bent and connected through the second arc frame 227. The third frame 223 and the fourth frame 224 are bent and connected through the third arc frame 228. The fourth frame 224 and the first frame 221 are bent and transitioned through the fourth arc frame 229.

[0058] Further, the first decorative sheet 231 is disposed on the side of the first frame 221 close to the display screen 10, and its opposite ends respectively extend to the first arc frame 226 and the fourth arc frame 229. That is, one end of the first decorative sheet 231 extends to the side of the first arc frame 226 close to the display screen 10, and the other opposite end extends to the side of the fourth arc frame 229 close to the display screen 10. The second decorative sheet 233 is disposed on the side of the third frame 223 close to the display screen 10, and its opposite ends respectively extend to the second arc frame 227 and the third arc frame 228. That is, one end of the second decorative sheet 233 extends to the side of the second arc frame 227 close to the display screen 10, and the other opposite end extends to the side of the third arc frame 228 close to the display screen 10.

[0059] As described above, the surfaces of the first decorative sheet 231 and the second decorative sheet 233 facing away from the display screen 10 do not protrude beyond the frame 22, so that the thicknesses of the first decorative sheet 231 and the second decorative sheet 233 will not be superimposed on the overall thickness of the electronic device, thereby reducing the overall thickness of the electronic device.

[0060] For a foldable electronic device, when the electronic device is in a folded state, in order to ensure the radiation efficiency of the antenna of the electronic device, a certain radiation gap needs to be reserved between the first middle frame and the second middle frame. Referring to Figure 8 and Figure 9 , Figure 8 is Figure 6 a partial enlarged structural schematic diagram of the D area of the electronic device 100 in the embodiment, Figure 9 and is a structural schematic diagram of the electronic device 100 when folded in some embodiments of the present application.

[0061] The middle frame 20 of the electronic device 100 includes a first middle frame 20a and a second middle frame 20b that are rotatably connected. The first middle frame 20a and the second middle frame 20b can rotate relative to each other so that the electronic device 100 can be switched between an unfolded state and a folded state. The first frame 221 is formed on the first middle frame 20a, the third frame 223 is formed on the second middle frame 20b, a part of the second frame 222 is formed on the first middle frame 20a, and another part is formed on the second middle frame 20b. A part of the fourth frame 224 is formed on the first middle frame 20a, and another part is formed on the second middle frame 20b. That is, the second frame 222 is divided into two parts, one part is formed on the first middle frame 20a, and the other part is formed on the second middle frame 20b. The fourth frame 224 is divided into two parts, one part is formed on the first middle frame 20a, and the other part is formed on the second middle frame 20b.

[0062] Further, in the folded state of the electronic device 100, the first frame 221 and the third frame 223 overlap, a part of the second frame 222 on the first middle frame 20a overlaps with another part of the second frame 222 on the second middle frame 20b, and a part of the fourth frame 224 on the first middle frame 20a overlaps with another part of the fourth frame 224 on the second middle frame 20b.

[0063] Optionally, in the folded state of the electronic device 100, the first arc frame 226 abuts against the second arc frame 227, so that there is a gap j between the first middle frame 20a and the second middle frame 20b. In other words, in the folded state of the electronic device 100, the first arc frame 226 abuts against the second arc frame 227, so that there is a gap j between a part of the second frame 222 on the first middle frame 20a and another part of the second frame 222 on the second middle frame 20b.

[0064] Optionally, in the folded state of the electronic device 100, the fourth arc frame 229 abuts against the third arc frame 228, so that there is a gap j between the first middle frame 20a and the second middle frame 20b. In other words, in the folded state of the electronic device 100, the fourth arc frame 229 abuts against the third arc frame 228, so that there is a gap j between a part of the fourth frame 224 on the first middle frame 20a and another part of the fourth frame 224 on the second middle frame 20b.

[0065] Optionally, in the folded state of the electronic device 100, the first arc frame 226 abuts against the second arc frame 227, and the fourth arc frame 229 abuts against the third arc frame 228, so that there is a gap j between the first middle frame 20a and the second middle frame 20b. In other words, in the folded state of the electronic device 100, the first arc frame 226 abuts against the second arc frame 227, and the fourth arc frame 229 abuts against the third arc frame 228, so that there is a gap j between a part of the second frame 222 on the first middle frame 20a and another part of the second frame 222 on the second middle frame 20b, and there is a gap j between a part of the fourth frame 224 on the first middle frame 20a and another part of the fourth frame 224 on the second middle frame 20b.

[0066] It can be understood that the above gap j can be used as the radiation gap of the antenna of the electronic device 100, so that the electronic device 100 can also maintain good antenna radiation efficiency in the folded state.

[0067] In one embodiment, the first arc-shaped frame 226 has a first frame top 2261 that protrudes from the display screen 10 in the thickness direction of the display area 101. Among them, in the thickness direction of the display area 101, the height by which the first frame top 2261 protrudes from the display screen 10 is greater than the height by which the second side frame 222 protrudes from the display screen 10. Optionally, in the thickness direction of the display area 101, the height by which the first frame top 2261 protrudes from the display screen 10 is greater than the height by which the first side frame 221 protrudes from the display screen 10. In the folded state of the electronic device 100, the first frame top 2261 abuts against the second arc-shaped frame 227, so that there is a gap j between the first middle frame 20a and the second middle frame 20b.

[0068] Furthermore, in the thickness direction of the display area 101, the height by which the first arc-shaped frame 226 protrudes from the display screen 10 gradually increases in the direction from the end where the first arc-shaped frame 226 is connected to the second side frame 222 to the first frame top 2261. Optionally, the height by which the first arc-shaped frame 226 protrudes from the display screen 10 gradually increases in the direction from the end where the first arc-shaped frame 226 is connected to the first side frame 221 to the first frame top 2261.

[0069] Optionally, there is a height difference h between the height by which the first frame top 2261 protrudes from the display screen 10 and the height by which the second side frame 222 protrudes from the display screen 10, and the height difference h is not less than 0.1 mm. For example, the height difference h can be 0.15 mm, 0.20 mm, 0.25 mm, or 0.30 mm, etc.

[0070] Optionally, there is a height difference between the height by which the first frame top 2261 protrudes from the display screen 10 and the height by which the first side frame 221 protrudes from the display screen 10, and this height difference is not less than 0.1 mm. For example, the height difference can be 0.15 mm, 0.20 mm, 0.25 mm, or 0.30 mm, etc.

[0071] Similarly, in some embodiments, the second arc-shaped frame 227 has a second frame top (not shown in the figure), and the second frame top protrudes from the display screen 10 in the thickness direction of the display area 101. Among them, in the thickness direction of the display area 101, the height by which the second frame top protrudes from the display screen 10 is greater than the height by which the second side frame 222 protrudes from the display screen 10. Optionally, in the thickness direction of the display area 101, the height by which the second frame top protrudes from the display screen 10 is greater than the height by which the third side frame 223 protrudes from the display screen 10. In the folded state of the electronic device 100, the second frame top abuts against the first arc-shaped frame 226, so that there is a gap j between the first middle frame 20a and the second middle frame 20b.

[0072] Further, in the thickness direction of the display area 101, the height by which the second arc-shaped frame 227 protrudes from the display screen 10 gradually increases in the direction from the end where the second arc-shaped frame 227 is connected to the second side frame 222 to the top of the second frame. Optionally, the height by which the second arc-shaped frame 227 protrudes from the display screen 10 gradually increases in the direction from the end where the second arc-shaped frame 227 is connected to the third side frame 223 to the top of the second frame.

[0073] Optionally, there is a height difference between the height by which the top of the second frame protrudes from the display screen 10 and the height by which the second side frame 222 protrudes from the display screen 10, and this height difference is not less than 0.1 mm. For example, the height difference can be 0.15 mm, 0.20 mm, 0.25 mm, or 0.30 mm, etc.

[0074] Optionally, there is a height difference between the height by which the top of the second frame protrudes from the display screen 10 and the height by which the third side frame 223 protrudes from the display screen 10, and this height difference is not less than 0.1 mm. For example, the height difference can be 0.15 mm, 0.20 mm, 0.25 mm, or 0.30 mm, etc.

[0075] Similarly, in some embodiments, the third arc-shaped frame 228 has a top of the third frame (not shown in the figure), and the top of the third frame protrudes from the display screen 10 in the thickness direction of the display area 101. In some embodiments, the fourth arc-shaped frame 229 has a top of the fourth frame (not shown in the figure), and the top of the fourth frame protrudes from the display screen 10 in the thickness direction of the display area 101.

[0076] In some embodiments, the first arc-shaped frame 226 has a top of the first frame 2261, and the second arc-shaped frame 227 has a top of the second frame. In the folded state of the electronic device 100, the top of the first frame 2261 abuts against the top of the second frame, so that there is a gap j between the first middle frame 20a and the second middle frame 20b. The gap j can be understood as the gap between a part of the second side frame 222 on the first middle frame 20a and another part of the second side frame 222 on the second middle frame 20b.

[0077] In some embodiments, the third arc-shaped frame 228 has a top of the third frame, and the fourth arc-shaped frame 229 has a top of the fourth frame. In the folded state of the electronic device 100, the top of the third frame abuts against the top of the fourth frame, so that there is a gap j between the first middle frame 20a and the second middle frame 20b. The gap j can be understood as the gap between a part of the fourth side frame 224 on the first middle frame 20a and another part of the fourth side frame 224 on the second middle frame 20b.

[0078] Wherein, the width of the gap j is not less than 0.2 mm. For example, the gap j can be 0.25 mm, 0.3 mm, 0.35 mm, or 0.40 mm, etc.

[0079] In some embodiments, the end of the first decorative sheet 231 facing away from the first frame edge 221 may be flush with the top of the first frame 2261, and / or the end of the first decorative sheet 231 facing away from the first frame edge 221 may be flush with the top of the fourth frame. In other words, the angle between the first decorative sheet 231 and the first frame edge 221 is an obtuse angle.

[0080] As Figure 7 shown, the top of the first frame 2261 may protrude from the first frame edge 221. One end of the first decorative sheet 231 is connected to the first frame edge 221 and the other end is flush with the top of the first frame 2261, then the angle between the first decorative sheet 231 and the first frame edge 221 is an obtuse angle. Similarly, the top of the fourth frame may protrude from the first frame edge 221. One end of the first decorative sheet 231 is connected to the first frame edge 221 and the other end is flush with the top of the fourth frame, then the angle between the first decorative sheet 231 and the first frame edge 221 is an obtuse angle.

[0081] In some embodiments, the end of the second decorative sheet 233 facing away from the third frame edge 223 may be flush with the top of the second frame, and / or the end of the second decorative sheet 233 facing away from the third frame edge 223 may be flush with the top of the third frame. In other words, the angle between the second decorative sheet 233 and the third frame edge 223 is an obtuse angle.

[0082] As described above, the top of the second frame may protrude from the third frame edge 223. One end of the second decorative sheet 233 is connected to the third frame edge 223 and the other end is flush with the top of the second frame, then the angle between the second decorative sheet 233 and the third frame edge 223 is an obtuse angle. Similarly, the top of the third frame may protrude from the third frame edge 223. One end of the second decorative sheet 233 is connected to the third frame edge 223 and the other end is flush with the top of the third frame, then the angle between the second decorative sheet 233 and the third frame edge 223 is an obtuse angle.

[0083] In one embodiment, a slit is provided on the first middle frame 20a and / or the second middle frame 20b. In the folded state of the electronic device 100, the slit communicates with the gap j to ensure the radiation efficiency of the internal antenna of the electronic device 100 when the electronic device 100 is folded. That is, the gap j can be understood as a radiation gap. As Figure 9 shown, a first slit f1 is provided on the first middle frame 20a, and a second slit f2 is provided on the second middle frame 20b. Among them, the first slit f1 may be provided on a part of the second frame edge 222 on the first middle frame 20a and / or a part of the fourth frame edge 224 on the first middle frame 20a, and the second slit f2 may be provided on another part of the second frame edge 222 on the second middle frame 20b and / or another part of the fourth frame edge 224 on the second middle frame 20b. Among them, the middle frame 20 (i.e., the first middle frame 20a and / or the second middle frame 20b) is made of metal, and the decorative sheet 230 is made of plastic.

[0084] Of course, in other embodiments, the first gap f1 can be provided on the first frame 221 on the first middle frame 20a, and the second gap f2 can be provided on the third frame 223 on the second middle frame 20b. In some embodiments, the first gap f1 and / or the second gap f2 can be filled with plastic to form a plastic antenna gap of the electronic device.

[0085] See again Figures 1 to 3 The middle plate 21 is configured to carry the flexible screen 10. The middle plate 21 and the frame 22 cooperate to form a receiving groove for receiving the display screen 10. The decorative sheet 23 is arranged on a side of the frame 22 close to the middle plate 21 and is spaced apart from the middle plate 21.

[0086] Further, the middle plate 21 may include a first bearing surface 211 for bearing the display area 101, and a second bearing surface 212 for bearing the non-display area 102. The decorative sheet 23 is at least partially overlapped with the second bearing surface 212. One end of the second bearing surface 212 is adjacent to the first bearing surface 211, and the other end is bent and extended in a direction away from the decorative sheet 23. In other words, the second bearing surface 212 is formed on the edge of the middle plate 21 extending outwardly into a curved surface, that is, the second bearing surface 212 is curved.

[0087] Among them, one end of the second bearing surface 212 away from the first bearing surface 211 is bent and extended in a direction away from the decorative sheet 23, so that the non-display area 102 of the display screen 10 is bent and extended in a direction away from the decorative sheet 23, that is, the non-display area 102 of the display screen 10 is in a curved shape to provide an escape space for the decorative sheet 23. Optionally, the decorative sheet 23 can be in a curved shape, and its curved shape is adapted to the curved shape of the non-display area 102. In other words, the curved shape of the decorative sheet 23 is adapted to the curved shape of the second bearing surface 212.

[0088] It can be understood that when the height of the frame 22 protruding from the display area 101 is fixed, the non-display area 102 bends and extends in a direction away from the decorative sheet 23. At this time, the height of the frame 22 protruding from the non-display area 102 near the end of the frame 22 is greater than the height of the frame 22 protruding from the display area 101, thereby providing a thickness space for the decorative sheet 23, thereby achieving a thinner electronic device 100.

[0089] For example, the height of the frame 22 protruding from the display area 101 can be 0.1 mm, and the non-display area 102 bends and extends in a direction away from the decorative sheet 23, so that the height of the frame 22 protruding from the non-display area 102 near the end of the frame 22 can be 0.2 mm or even greater than 0.2 mm. The protruding height can provide a certain thickness space for the decorative sheet 23.

[0090] As described above, the decorative sheet 23 includes a first decorative sheet 231 and a second decorative sheet 233. The first decorative sheet 231 covers at least part of the first black edge 111, and the second decorative sheet 233 covers at least part of the third black edge 113. At this time, there may be two second bearing surfaces 212. The two second bearing surfaces 212 are respectively arranged corresponding to the first decorative sheet 231 and the second decorative sheet 233, that is, at least part of one second bearing surface 212 overlaps with the first decorative sheet 231, and at least part of the other second bearing surface 212 overlaps with the second decorative sheet 233.

[0091] For a foldable electronic device, when the display screen 10 is folded, there will be a stacking dislocation. As Figure 5 shown, the dislocation of the display screen 10 mainly occurs at the ends where the first black edge 111 and the third black edge 113 are located. Based on this, the first decorative sheet 231, the first frame 221 and the second bearing surface 212 of the middle plate 21 can provide space for the stacking dislocation of the first black edge 111, that is, the first black edge 111 is arranged at an interval from the first frame 221. Similarly, the second decorative sheet 233, the third frame 223 and the second bearing surface 212 of the middle plate 21 can provide space for the stacking dislocation of the third black edge 113, that is, the third black edge 113 is arranged at an interval from the third frame 223. At the same time, the first decorative sheet 231 is arranged to overlap with the first black edge 111, and the second decorative sheet 233 is arranged to overlap with the third black edge 113, which can prevent the ends where the first black edge 111 and the third black edge 113 are located from warping.

[0092] It should be noted that the terms "first", "second", etc. in this application are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include at least one such feature.

[0093] Please refer to Figure 10 , Figure 10 which is a schematic diagram of a partial structure of the electronic device 100 in some other embodiments of this application. As described above, the decorative sheet 23 extends from the frame 22 towards the display screen 10, so that the decorative sheet 23 covers at least part of the non-display area 102, and the display screen 10 is arranged at an interval from the frame 22. Based on this, the width of the black edge of the electronic device 100 at least includes the width of the non-display area 102 and the gap between the display screen 10 and the frame 22. The width of the decorative sheet 23 includes the gap between the display screen 10 and the frame 22 and the overlapping width between the decorative sheet 23 and the non-display area 102.

[0094] Further, the decorative sheet 23 may include a first portion 2301 overlapping with the non-display area 102 and a second portion 2302 disposed between the first portion 2301 and the frame 22. Among them, the color of the first portion 2301 is the same as that of the non-display area 102, so as to visually achieve the effect of narrowing the decorative sheet 23.

[0095] As Figure 10 shown, the area between the two dotted lines defines the non-display area 102 of the display screen 10. The first portion 2301 is located at one end of the decorative sheet 23 away from the frame 22 and overlaps with the non-display area 102. By setting the color of the first portion 2301 to be the same as that of the non-display area 102, the effect of narrowing the decorative sheet 23 can be achieved visually.

[0096] Among them, the decorative sheet 23 can be color-separated so that the first portion 2301 and the second portion 2302 present different colors. For example, the non-display area 102 generally appears black, so the first portion 2301 can appear black, while the second portion 2302 can appear non-black such as red, blue or green. Thus, visually, the black first portion 2301 can be regarded as the non-display area 102, and the non-black second portion 2302 can be regarded as the decorative sheet 23, thereby achieving the effect of narrowing the decorative sheet 23 visually.

[0097] Optionally, the decorative sheet 23 may be disposed around the outer periphery of the display area 101. At this time, the first portion 2301 may be annular and overlap with the non-display area 102. As Figure 10 shown, the decorative sheet 23 may further include a third decorative sheet 235 disposed on the side of the fourth frame 224 close to the display screen 10. The third decorative sheet 235 extends towards the display screen 10, and the width of the third decorative sheet 235 in the extending direction does not exceed 1 mm. It can be understood that the third decorative sheet 235 does not protrude from the fourth frame 224 and can cover at least part of the gap between the fourth frame 224 and the flexible screen 10; or, the third decorative sheet 235 can further cover at least part of the fourth black edge 114 of the flexible screen 10 to protect at least part of the edge of the fourth black edge 114.

[0098] Similarly, the decorative sheet may further include a fourth decorative sheet (not shown in the figure) disposed on the side of the second frame close to the display screen. The fourth decorative sheet extends towards the display screen, and the width of the fourth decorative sheet in the extending direction does not exceed 1 mm. Among them, the fourth decorative sheet does not protrude from the second frame and can cover at least part of the gap between the second frame and the flexible screen; or, the fourth decorative sheet can further cover at least part of the second black edge of the flexible screen to protect at least part of the edge of the second black edge.

[0099] Optionally, for a foldable electronic device, when the decorative sheet 23 includes the first decorative sheet 231 and the second decorative sheet 233 in the foregoing embodiments, the decorative sheets on the second frame 222 and the fourth frame 224 are cancelled. The first part 2301 of the first decorative sheet 231 overlaps with the first black edge 111 and they have the same color. The first part 2301 of the second decorative sheet 233 overlaps with the third black edge 113 and they have the same color.

[0100] In the electronic device provided by the embodiment of the present application, by disposing the decorative sheet on the side of the frame close to the display screen and the decorative sheet does not protrude from the frame, the influence of the decorative sheet on the overall thickness of the electronic device can be ignored, so as to achieve the effect of reducing the overall thickness of the electronic device. In addition, by performing color separation processing on the decorative sheet, the color of the part of the decorative sheet overlapping with the non-display area is the same as that of the non-display area, so that the effect of narrowing the decorative sheet can be achieved visually, thereby improving the appearance expressiveness of the electronic device.

[0101] In addition, the present application also provides a mobile terminal device. Please refer to Figure 11 , Figure 11 is a schematic structural composition diagram of the mobile terminal device 900 in some embodiments of the present application. The mobile terminal device 900 can be a mobile phone, a tablet computer, a laptop computer, a wearable device, etc. In the embodiment of the present application, the mobile phone is taken as an example. The structure of the mobile terminal device 900 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (i.e., the display screen 10 in the foregoing embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980, and a power supply 990, etc. Among them, the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to provide electrical energy for the entire mobile terminal device 900.

[0102] Specifically, the RF circuit 910 is used for receiving and transmitting signals; the memory 920 is used for storing data instruction information; the input unit 930 is used for inputting information, which may specifically include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941 (i.e., the display screen 10 in the above embodiment), etc.; the sensor 950 includes an infrared sensor, a laser sensor, the pressure sensor and the position sensor in the foregoing embodiment, etc., and is used for detecting user proximity signals, distance signals, pressure signals, position signals, etc.; the speaker 961 and the microphone (or microphone) 962 are connected to the processor 980 through the audio circuit 960 and are used for receiving and transmitting sound signals; the wifi module 970 is used for receiving and transmitting wifi signals, and the processor 980 is used for processing the data information of the mobile terminal device. It can be understood that for the technical features not detailed in this embodiment, reference can be made to the specific descriptions in the above embodiments, so this embodiment will not be elaborated herein.

[0103] It should be noted that the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or settings.

[0104] The above are only some embodiments of the present application, and thus do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. An electronic device, characterized in that, The electronic device includes: a display screen having a display area and a non-display area disposed around the periphery of the display area; a middle frame including a border disposed around the outer periphery of the display screen; and a decorative sheet extending from the border toward the display screen to cover at least a part of the non-display area on the display surface side of the display screen; wherein, in the thickness direction of the display screen, the surface of the decorative sheet facing away from the display screen does not protrude beyond the border.

2. The electronic device according to claim 1, wherein The non-display area includes a first black edge, a second black edge, a third black edge, and a fourth black edge that are sequentially bent and connected; the border includes a first border, a second border, a third border, and a fourth border that are sequentially bent and connected; the first border is disposed on a side of the first black edge facing away from the display area, the second border is disposed on a side of the second black edge facing away from the display area, the third border is disposed on a side of the third black edge facing away from the display area, and the fourth border is disposed on a side of the fourth black edge facing away from the display area; wherein, the decorative sheet includes a first decorative sheet disposed on a side of the first border close to the display screen and a second decorative sheet disposed on a side of the third border close to the display screen; the first decorative sheet extends toward the display screen to cover at least a part of the first black edge, and the second decorative sheet extends toward the display screen to cover at least a part of the third black edge.

3. The electronic device according to claim 2, characterized in that, The border further includes a first arc-shaped frame connected between the first border and the second border, a second arc-shaped frame connected between the second border and the third border, a third arc-shaped frame connected between the third border and the fourth border, and a fourth arc-shaped frame connected between the fourth border and the first border; wherein, one end of the first decorative sheet extends to a side of the first arc-shaped frame close to the display screen, and the other opposite end extends to a side of the fourth arc-shaped frame close to the display screen; one end of the second decorative sheet extends to a side of the second arc-shaped frame close to the display screen, and the other opposite end extends to a side of the third arc-shaped frame close to the display screen.

4. The electronic device according to claim 3, wherein The middle frame includes a first middle frame and a second middle frame that are rotatably connected, and the first middle frame and the second middle frame can rotate relative to each other so that the electronic device can switch between an unfolded form and a folded form; wherein, in the folded form, the first arc-shaped frame abuts against the second arc-shaped frame and / or the fourth arc-shaped frame abuts against the third arc-shaped frame, so that there is a gap between the first middle frame and the second middle frame.

5. The electronic device according to claim 4, characterized in that, The first arc-shaped frame has a first frame top, and there is a height difference between the height by which the first frame top protrudes beyond the display screen and the height by which the second border protrudes beyond the display screen; the second arc-shaped frame has a second frame top, and there is a height difference between the height by which the second frame top protrudes beyond the display screen and the height by which the second border protrudes beyond the display screen; wherein, in the folded form, the first frame top abuts against the second frame top, so that there is a gap between the first middle frame and the second middle frame.

6. The electronic device according to claim 5, wherein The width of the gap is not less than 0.2 mm.

7. The electronic device according to claim 4, wherein The angle between the first decorative piece and the first frame is an obtuse angle; the angle between the second decorative piece and the third frame is an obtuse angle.

8. The electronic device according to claim 4, wherein The middle frame is made of metal, and the decorative piece is made of plastic; there is a gap provided on the first middle frame and / or the second middle frame, and in the folded state, the gap communicates with the gap.

9. The electronic device according to claim 2, wherein The decorative piece further includes a third decorative piece provided on the fourth frame close to the display screen side, the third decorative piece extends towards the display screen, and the width of the third decorative piece in the extending direction does not exceed 1 mm; and / or The decorative piece further includes a fourth decorative piece provided on the second frame close to the display screen side, the fourth decorative piece extends towards the display screen, and the width of the fourth decorative piece in the extending direction does not exceed 1 mm.

10. The electronic device according to claim 1, wherein The middle frame further includes a middle plate, the middle plate includes a first bearing surface for bearing the display area and a second bearing surface for bearing the non-display area; at least part of the decorative piece overlaps with the second bearing surface; wherein, one end of the second bearing surface is adjacent to the first bearing surface and the other end bends and extends in a direction away from the decorative piece.

11. The electronic device according to claim 1, characterized in that, The decorative piece includes a first part overlapping with the non-display area and a second part provided between the first part and the frame; wherein, the color of the first part is the same as the color of the non-display area.

12. The electronic device according to claim 11, characterized in that, The color of the second part is different from the color of the first part.

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