electronic devices

Abstract

An embodiment of the present application provides an electronic device, comprising a first body, a second body, and a flexible screen. The first body and the second body are slidably connected, the second body has a movable back panel, and an antenna assembly is disposed on the inner side of the movable back panel. In the electronic device, when the flexible screen is in an unfolded state, a cavity is formed between the first body and the second body, and at least a portion of the antenna assembly faces the cavity. Because the antenna assembly is disposed on the inner side of the movable back panel, at least a portion of the antenna assembly is directly facing the cavity, and the cavity can serve as a clearance area for the antenna assembly, thereby improving the radiation performance of the antenna assembly and the strength of the signal transmission of the electronic device.

Description

Technical Field

[0001] The present application belongs to the field of electronic technology, and specifically relates to an electronic device. Background Art

[0002] In related technologies, with the continuous innovation of science and technology, the structure and function of electronic devices are constantly updated and iterated. Take flexible screens as an example. Many electronic devices have begun to be equipped with flexible screens, which can meet users' demand for large screen sizes.

[0003] Flexible screen devices require better antenna performance while increasing screen display. However, because the screen of a flexible screen device covers a larger area of the electronic device, it reduces the layout space of the antenna, limiting the signal transmission performance of the electronic device. Summary of the Invention

[0004] The present application aims to provide an electronic device to solve the problem of poor signal transmission of electronic devices in the prior art.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] An embodiment of the present application provides an electronic device, including:

[0007] A first body, a second body, and a flexible screen, wherein the first body and the second body are slidably connected, the second body has a movable back plate and a rotating shaft, a first end of the flexible screen is connected to the first body, and a second end of the flexible screen passes through the rotating shaft and is connected to the movable back plate;

[0008] An antenna assembly is provided on the inner side of the movable back panel. When the flexible screen is in the unfolded state, a cavity is formed between the first body and the second body, and at least a portion of the antenna assembly is opposite to the cavity.

[0009] In this application, an embodiment of the present application provides an electronic device comprising a first body, a second body, and a flexible screen. When the flexible screen is in an unfolded state, a cavity is formed between the first body and the second body, and at least a portion of the antenna assembly faces the cavity. Because the antenna assembly is disposed on the inner side of the movable backplane, at least a portion of the antenna assembly faces directly toward the cavity, and the cavity serves as a clearance area for the antenna assembly, thereby improving the radiation performance of the antenna assembly and the signal transmission strength of the electronic device.

[0010] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 is a rear view of an electronic device according to an embodiment of the present application, wherein the flexible screen is in a retracted state;

[0013] Figure 2 is a cross-sectional view in the length direction of an electronic device according to an embodiment of the present application when the flexible screen is in a retracted state;

[0014] Figure 3 is a rear view of a flexible screen of an electronic device in an unfolded state according to an embodiment of the present application;

[0015] Figure 4 is a cross-sectional view in the length direction of a flexible screen of an electronic device according to an embodiment of the present application when in an unfolded state;

[0016] Figure 5 is a schematic diagram of an antenna assembly of an electronic device before assembly according to an embodiment of the present application;

[0017] Figure 6 is a schematic diagram of an assembled antenna assembly of an electronic device according to an embodiment of the present application;

[0018] Figure 7 is a schematic diagram of an antenna assembly of another electronic device before assembly according to an embodiment of the present application;

[0019] Figure 8 is a schematic diagram of another assembled antenna assembly of an electronic device according to an embodiment of the present application;

[0020] Figure 9 is a schematic diagram of an antenna assembly of another electronic device before assembly according to an embodiment of the present application;

[0021] Figure 10 is a schematic diagram of an assembled antenna assembly of another electronic device according to an embodiment of the present application;

[0022] Figure 11 This is a circuit diagram of a feeding contact point of an electronic device according to an embodiment of the present application.

[0023] Reference numerals:

[0024] 1. First body; 11. Feed contact point; 2. Second body; 21. Movable back panel; 22. Rotating shaft; 3. Flexible screen; 4. Antenna assembly; 41. First antenna; 42. Second antenna; 43. Second antenna; 44. Second antenna; 45. Slit; 5. Feed line; 51. First feed line; 52. Second feed line. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] The following combination Figure 1 - Figure 11 An electronic device according to an embodiment of the present application is described.

[0030] like Figures 1 to 4 As shown, according to some embodiments of the present application, an electronic device is provided, the electronic device including:

[0031] A first body 1, a second body 2, and a flexible screen 3. The first body 1 and the second body 2 are slidably connected. The second body 2 has a movable back panel 21 and a rotating shaft 22. The first end of the flexible screen 3 is connected to the first body 1, and the second end of the flexible screen 3 passes around the rotating shaft 22 and is connected to the movable back panel 21. When the flexible screen 3 is in the unfolded state, that is, when the second body 2 and the first body 1 are sliding relative to each other, the user can hold the first body 1 and then pull the second body 2 to achieve relative sliding between the first body 1 and the second body 2. When the movable back panel 21 slides relative to the first body 1, the rotating shaft 22 can drive the flexible screen 3 to open and retract when it rotates and moves away from the first body 1, thereby achieving flexible adjustment of the display area of the electronic device.

[0032] Specifically, the first body 1 is a fixed body, the second body 2 is a mobile body, the first end of the flexible screen 3 is a fixed end, and the flexible screen 3 is fixedly connected to the first body 1 through the first end, and the second end of the flexible screen 3 is a mobile end, and the second end of the flexible screen 3 moves with the second body 2.

[0033] In one embodiment, when the second body 2 and the first body 1 slide relative to each other, the first body 1 is provided with a slide rail extending along the sliding direction of the second body 2 and the first body 1, and the second body 2 is provided with a slide groove cooperating with the slide rail, and the relative sliding of the second body 2 and the first body 1 is achieved through the cooperation of the slide rail and the slide groove.

[0034] In another embodiment, the first body 1 is provided with a sliding groove extending along the sliding direction of the second body 2 and the first body 1, and the second body 2 is provided with a sliding rail that cooperates with the sliding rail. The relative sliding of the second body 2 and the first body 1 is also achieved through the cooperation of the sliding rail and the sliding groove.

[0035] See also Figure 4 The antenna assembly 4 is provided on the inner side of the movable back plate 21. When the flexible screen 3 is in the unfolded state, a cavity is formed between the first body 1 and the second body 2. Figure 4 As shown, at this time, the unfolded state of the flexible screen 3 includes two situations: the flexible screen 3 is in a retracted state and the flexible screen 3 is in an extended state. Figure 4 The end plates on either side of the cavity are not shown. During the unfolding of the flexible screen 3, the cavity remains closed, and at least a portion of the antenna assembly 4 faces the cavity. Because the antenna assembly 4 is positioned inside the movable backplane 21, at least a portion of the antenna assembly 4 faces directly into the cavity. The cavity serves as a clearance area for the antenna assembly 4, improving its radiation performance.

[0036] Specifically, when the flexible screen 3 is in a retracted state, the second body 2 and the first body 1 are close to each other. At this time, the antenna component 4 on the inside of the movable back panel 21 can be stored between the movable back panel 21 and the first body 1, and the antenna component 4 is in a non-working state; when the flexible screen 3 is in an extended state, the second body 2 and the first body 1 are away from each other. At this time, a cavity can be formed between the first body 1 and the second body 2, so that at least part of the movable back panel 21 is exposed from the cavity. The antenna component 4 can use the clearance area formed by the cavity to improve the radiation performance of the antenna component 4, so that the antenna component 4 can transmit and receive signals through the movable back panel 21, that is, the antenna component 4 is in a working state.

[0037] The electronic device provided in an embodiment of the present application includes a first body 1, a second body 2, and a flexible screen 3. The first body 1 and the second body 2 are slidably connected. The second body 2 has a movable back panel 21 and a hinge 22. The first end of the flexible screen 3 is connected to the first body 1, and the second end of the flexible screen 3 passes around the hinge 22 and is connected to the movable back panel 21. An antenna assembly 4 is disposed inside the movable back panel 21. When the flexible screen 3 is in the unfolded state, a cavity is formed between the first body 1 and the second body 2, and at least a portion of the antenna assembly 4 faces the cavity. Because the antenna assembly 4 is disposed inside the movable back panel 21, at least a portion of the antenna assembly 4 directly faces the cavity. The cavity serves as a clearance area for the antenna assembly 4, improving the radiation performance of the antenna assembly 4 and the signal transmission strength of the electronic device.

[0038] Alternatively, see Figures 5 to 10 A feeding contact point 11 is provided on the first body 1. When the second body 2 and the first body 1 are away from each other, the antenna component 4 is electrically connected to the feeding contact point 11 through the feed line 5.

[0039] Specifically, a main board may be provided on the first main body 1 , and a feeding contact point 11 may be provided on the main board. The feeding contact point 11 may be a conductive member such as conductive foam or a spring.

[0040] When the flexible screen 3 is in the retracted state, the antenna assembly 4 and the feed line 5 can be stored between the movable back panel 21 and the first main body 1. At this time, the antenna assembly 4 is not connected to the feed contact point 11, and the antenna assembly 4 is not working. When the flexible screen 3 is in the extended state, the extended state of the flexible screen 3 can be a partially extended state or a fully extended state. For example, when the flexible screen 3 is fully extended, the end of the feed line 5 away from the antenna assembly 4 contacts the feed contact point 11, so that the antenna assembly 4 can be electrically connected to the feed contact point 11 through the feed line 5, and the antenna assembly 4 is in an operating state.

[0041] Specifically, since the electronic device is generally in the state of watching videos or playing games when the flexible screen 3 is in the extended state, antennas for 4G intermediate frequency (B3, B1), WiFi 2.4G, 4G high frequency (B40, B41), WiFi 5G, and 5G N78 band can be made on the inner side of the movable back panel 21 to form the antenna assembly 4. When the flexible screen 3 is in the extended state, the cavity can increase the clearance of the antenna assembly 4, improving the signal transmission and reception performance of the antenna assembly 4.

[0042] Alternatively, see Figure 5 and Figure 6 The antenna assembly 4 includes a first antenna 41 , which is a microstrip antenna. The feed line 5 includes a first feed line 51 , which is electrically connected to the feeding contact point 11 through the first feed line 51 .

[0043] Specifically, the microstrip antenna can be made very thin while ensuring signal transmission and reception performance, so as to avoid the first antenna 41 from occupying too much space inside the electronic device when the flexible screen 3 is retracted. In addition, the antenna component 4 can also be a wire antenna, a monopole antenna, a dipole antenna, a helical antenna, or other types of planar antennas to ensure the signal radiation performance and thickness of the antenna component 4.

[0044] Also, see Figure 5 The antenna assembly 4 may further include a second antenna 42, a third antenna 43 and a fourth antenna 44. The second antenna 42, the third antenna 43 and the fourth antenna 44 may all be microstrip antennas electrically connected to the feeding contact point 11 through the first feed line 51, just like the first antenna 41. The first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 may form an antenna cluster or a MIMO antenna to improve the radiation performance of the antenna assembly 4.

[0045] Alternatively, see Figure 7 and Figure 8The first antenna 41 is a square microstrip antenna, the feed line 5 includes a first feed line 51 and a second feed line 52, and two adjacent edges of the first antenna 41 are electrically connected to the feeding contact point 11 through the first feed line 51 and the second feed line 52 respectively.

[0046] Specifically, a first feeding point and a second feeding point can be respectively provided on two adjacent edges of the first antenna 41, the first feed line 51 is electrically connected to the first feeding point, and the second feed line 52 is electrically connected to the second feeding point. The two feeding points consisting of the first feeding point and the second feeding point on the two adjacent edges of the first antenna 41 can form a common radiator antenna, so that the first antenna 41 can be used as a MIMO antenna or a same-frequency antenna cluster, thereby improving the signal receiving and transmitting performance of the antenna assembly 4.

[0047] In addition, the second antenna 42, the third antenna 43 and the fourth antenna 44 can all be square microstrip antennas, like the first antenna 41, whose two adjacent edges are electrically connected to the feeding contact point 11 through the first feed line 51 and the second feed line 52, respectively, to form a square microstrip antenna. Figure 8 The structure of the antenna assembly 4 is shown.

[0048] Optionally, the first antenna 41 is a square microstrip antenna, and a first feeding point and a second feeding point are respectively provided on two adjacent edges of the first antenna 41 , and the phase difference between the first feeding point and the second feeding point is 90°.

[0049] Specifically, the first feed point and the second feed point on the first antenna 41 can form an orthogonal feed point. When the amplitudes of the first feed point and the second feed point are equal, the phase difference between the first feed point and the second feed point is 90°, which can enable the first antenna 41 to form a circularly polarized antenna, so as to achieve the miniaturization of the first antenna 41 while ensuring the bandwidth of the first antenna 41.

[0050] In addition, the first feeding point and the second feeding point can be formed on the second antenna 42, the third antenna 43 and the fourth antenna 44 on adjacent edges respectively, and the second antenna 42, the third antenna 43 and the fourth antenna 44 can all have a phase difference of 90° between the first feeding point and the second feeding point, just like the first antenna 41.

[0051] Alternatively, see Figures 5 to 8 The antenna assembly 4 includes a second antenna 42, a third antenna 43 and a fourth antenna 44. The first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 are arranged at intervals on the inner side of the movable back panel 21 along a direction perpendicular to the sliding direction of the first body 1 and the second body 2.

[0052] Specifically, the electronic device can be square and have a width and a length. The first body 1 and the second body 2 can slide relative to each other along the width of the electronic device, and the first antenna 41, the second antenna 42, the third antenna 43, and the fourth antenna 44 can be arranged at intervals along the length of the electronic device on the inner side of the movable back panel 21. The first antenna 41, the second antenna 42, the third antenna 43, and the fourth antenna 44 can form an antenna cluster similar to an antenna array. The first antenna 41, the second antenna 42, the third antenna 43, and the fourth antenna 44 can be same-frequency antennas or different-frequency antennas in adjacent frequency bands to improve the radiation performance of the antenna assembly 4.

[0053] In addition, the number of antennas of the antenna component 4 can be one, two, three, four, five or more, and when the number of antennas of the antenna component 4 is multiple, multiple antenna components 4 can form a MIMO antenna or an antenna cluster, thereby improving the signal receiving and transmitting performance of the antenna component 4.

[0054] Alternatively, see Figures 5 to 8 The first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 form an antenna cluster, and the antennas among the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 whose radiation efficiency is greater than or equal to the radiation threshold are the transmitting antennas of the electronic device, and the antennas among the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 whose radiation efficiency is less than the radiation threshold are the receiving antennas of the electronic device.

[0055] Specifically, when the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 form an antenna cluster, the antenna cluster is a group of structures similar to an antenna array formed by multiple antennas through the same feeding point. The antennas in the antenna cluster can be same-frequency antennas or different-frequency antennas in adjacent frequency bands. Moreover, the isolation between the antennas is good and they do not interfere with each other. The radiation efficiency of each antenna can be improved, which means that the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 do not interfere with each other, and the radiation efficiency of the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna can be improved.

[0056] See also Figure 5 and Figure 6 The first antenna 41, the second antenna 42, the third antenna 43, and the fourth antenna 44 can form a co-frequency antenna. When the electronic device is placed or held in different positions, the signal transmission performance of the electronic device can be enhanced by flexibly switching the antenna with high radiation efficiency as the transmitting antenna and the remaining antenna with relatively low radiation efficiency as the receiving antenna.

[0057] In the first embodiment, the electronic device is placed on a non-metallic bracket. Since the surrounding environment of the electronic device has little impact on the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44, and since the cavity can serve as a clearance area of the antenna assembly 4, two adjacent antennas among the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 can be used as transmitting antennas, and the other two antennas can be used as receiving antennas.

[0058] In addition, when the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 are all monopole antennas, the two antennas used for signal transmission can be used as a transmitting antenna cluster, and the two antennas used for signal reception can be used as a receiving antenna cluster; and if the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 are all microstrip antennas, the middle two antennas of the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 can be used as transmitting antennas, and the two antennas on both sides can be used as receiving MIMO antennas, and the receiving performance of the antenna assembly 4 can be improved by virtue of the better isolation of the antennas on both sides.

[0059] In the second embodiment, the electronic device is in handheld mode, in portrait mode, with the charging port facing downwards and the screen facing the face. When the flexible screen 3 is extended, due to the large width of the electronic device, the user can hold the electronic device with both hands, or place the electronic device on the palm of one hand to hold it up. In this case, the user's hand will seriously affect the radiation performance of the antenna near the lower charging port, such as Figure 5 When the third antenna 43 and the fourth antenna 44 are blocked, the radiation performance is reduced. In this case, the third antenna 43 and the fourth antenna 44 can be used as receiving antennas, and the first antenna 41 and the second antenna 42 can be used as transmitting antennas, so that the antenna assembly 4 forms a full-duplex system.

[0060] In a third embodiment, the electronic device is in a handheld state and in landscape mode, with the charging port facing the left hand and the screen facing the face. Furthermore, considering the user experience of the flexible screen 3 and the structural strength of the extended portion of the flexible screen 3 in a gaming scenario, the extended portion of the flexible screen 3 is positioned upward. At this time, the first antenna 41 and the fourth antenna 44 on both sides of the first antenna 41, the second antenna 42, the third antenna 43, and the fourth antenna 44 are blocked, and the radiation performance is reduced. The first antenna 41 and the fourth antenna 44 can be used as receiving antennas, and the second antenna 42 and the third antenna 43 can be used as transmitting antennas. Furthermore, due to the high isolation between the first antenna 41 and the fourth antenna 44, the first antenna 41 and the fourth antenna 44 can be combined into an antenna cluster, which together with the second antenna 42 and the third antenna 43 form a MIMO antenna.

[0061] Specifically, see Figure 7 and Figure 8The first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 can form a different frequency antenna, and the four antennas cover the four frequency bands of B1, B40+WiFi 2.4G, B3 and B41 respectively.

[0062] In the first embodiment, the electronic device is placed on a non-metallic bracket. Since the surrounding environment of the electronic device has little effect on the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44, and since the cavity can serve as a clearance area of the antenna assembly 4, any two antennas among the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 can be combined into a heterogeneous frequency transmitting antenna cluster, and it is not necessary for all frequency bands to have the same polarization, and then the remaining two antennas can be combined into a heterogeneous frequency receiving antenna cluster.

[0063] In the second embodiment, the electronic device is in handheld mode, in portrait mode, with the charging port facing downwards and the screen facing the face. When the flexible screen 3 is extended, due to the large width of the electronic device, the user can hold the electronic device with both hands, or place the electronic device on the palm of one hand to hold it up. In this case, the user's hand will seriously affect the radiation performance of the antenna near the lower charging port, such as Figure 5 When the third antenna 43 and the fourth antenna 44 are blocked, the radiation performance is reduced. In this case, the third antenna 43 and the fourth antenna 44 can be used as receiving antennas, and the first antenna 41 and the second antenna 42 can be used as transmitting antennas.

[0064] Optionally, the antenna among the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 whose receiving level is greater than or equal to the level threshold is the transmitting antenna of the electronic device, and the antenna among the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 whose receiving level is less than the level threshold is the receiving antenna of the electronic device.

[0065] Specifically, the receiving levels of the first antenna 41, the second antenna 42, the third antenna 43, and the fourth antenna 44 can be detected and compared to determine the degree of antenna impact and thus determine the transmitting antenna and the receiving antenna. In a specific embodiment, even if the radiation performance of the third antenna 43 and the fourth antenna 44 is reduced after being blocked, if the receiving level of the third antenna 43 is greater than or equal to the level threshold, that is, the third antenna 43 is at a high level, the receiving level of the fourth antenna 44 is less than the level threshold, that is, the fourth antenna 44 is at a low level, the receiving level of the first antenna 41 is at a high level, and the receiving level of the second antenna 42 is at a low level, but the level of the third antenna 43 is greater than that of the second antenna 42, the first antenna 41 and the third antenna 43 can be used as transmitting antennas, and the second antenna 42 and the fourth antenna 44 can be used as receiving antennas to ensure the transmitting and receiving performance of the antenna assembly 4.

[0066] In the third embodiment, the electronic device is in a handheld state and in a landscape state, with the charging port facing the left hand and the screen facing the face. In addition, considering the usage experience of the flexible screen 3 and the structural strength of the pulled-out part of the flexible screen 3 in the game scene, the pulled-out part of the flexible screen 3 will be at the top. At this time, the first antenna 41 and the fourth antenna 44 on both sides of the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 are blocked, and the radiation performance is reduced. The first antenna 41 and the fourth antenna 44 can be used as receiving antennas, and the second antenna 42 and the third antenna 43 can be used as transmitting antennas.

[0067] In the fourth embodiment, when the electronic device is in a harsh receiving environment, such as a weak signal or a high noise environment, the first antenna 41, the second antenna 42, the third antenna 43 and the fourth antenna 44 can be set as circularly polarized antennas, and the four antennas form a broadband circularly polarized antenna cluster to improve the transmission and reception performance of the antenna assembly 4.

[0068] Alternatively, see Figure 9 and Figure 10 , the antenna component 4 is a metal layer provided on the inner side of the movable back plate 21, and the feeding contact point 11 is an elastic metal part;

[0069] When the second body 2 and the first body 1 are close to each other, the metal layer is separated from the elastic metal member. When the second body 2 and the first body 1 are far away from each other, the metal layer is electrically connected to the elastic metal member.

[0070] Specifically, the metal layer can be formed on the inner side of the movable back panel 21 by coating, or the metal layer can be adhered to the inner side of the movable back panel 21 by bonding to ensure the flatness and stability of the metal layer on the inner side of the movable back panel 21; the elastic metal part can be a metal half ring or a metal spring. When the second body 2 and the first body 1 are close to each other, that is, when the flexible screen 3 is in a retracted state, the elastic metal part is pressed into the first body 1 by the second body 2, and the metal layer is separated from the elastic metal part; when the second body 2 and the first body 1 are away from each other, that is, when the flexible screen 3 is in a pulled apart state, the elastic metal part extends from the first body 1, and the metal layer forms an electrical connection after contacting the elastic metal part to achieve the radiation performance of the antenna assembly 4.

[0071] Alternatively, see Figure 9 and Figure 10 A plurality of slots 45 are provided on the metal layer so that the metal layer and the cavity form a resonant cavity antenna.

[0072] Specifically, see Figure 9 Two feeding contact points 11 can be provided, and the two feeding contact points 11 jointly excite the metal layer, and form a metal layer on the metal layer by reverse feeding. Figure 9 The current distribution shown in FIG. The circuit of the two feeding contact points 11 is as follows Figure 11 As shown, one of the feed contact points 11 excites the metal layer through a phase shifter with another feed contact point 11, turning the metal layer into a multi-frequency antenna. The slot 45 can cut off the current in the metal layer, and with the help of the cavity between the first body 1 and the second body 2, the metal layer and the cavity form a resonant cavity antenna. The antenna assembly 4 transmits and receives signals through the slot 45, improving the signal transmission and reception performance of the electronic device.

[0073] Optionally, the thickness of the antenna assembly 4 is less than or equal to 0.1 mm.

[0074] Specifically, the antenna component 4 can be an LDS (Laser Direct Structuring) antenna or an FPC (Flexible Printed Circuit) antenna. The antenna component 4 is specifically arranged on the inner side of the movable back panel 21 by laser or spraying, so that the thickness of the antenna component 4 is less than or equal to 0.1 mm. On the basis of ensuring the signal transmission and reception performance of the antenna component 4, the antenna component 4 is prevented from excessively occupying the internal space of the electronic device and obstructing the opening and retraction of the flexible screen 3, thereby achieving the flexibility of the flexible screen 3.

[0075] Optionally, the movable back plate 21 may be a non-metal back plate.

[0076] Specifically, the movable back panel 21 can be an insulating non-metallic back panel such as a glass back panel, a plastic back panel or a plastic back panel, so as to avoid the movable back panel 21 shielding the radiation signal of the antenna component 4, and ensure that the antenna component 4 can transmit and receive signals through the movable back panel 21.

[0077] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0078] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and purpose of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that: include: A first body (1), a second body (2) and a flexible screen (3), wherein the first body (1) and the second body (2) are slidably connected, the second body (2) is provided with a movable back plate (21) and a rotating shaft (22), a first end of the flexible screen (3) is connected to the first body (1), and a second end of the flexible screen (3) passes around the rotating shaft (22) and is connected to the movable back plate (21); An antenna assembly (4) is provided on the inner side of the movable back panel (21); when the flexible screen (3) is in the unfolded state, a cavity is formed between the first body (1) and the second body (2), and at least a portion of the antenna assembly (4) is opposite to the cavity; A feeding contact point (11) is provided on the first body (1); when the second body (2) and the first body (1) are away from each other, the antenna assembly (4) is electrically connected to the feeding contact point (11) via a feeder line (5); When the flexible screen (3) is in a retracted state, the antenna assembly (4) and the feeding contact point (11) are not conductive.

2. The electronic device according to claim 1, wherein The antenna assembly (4) includes a first antenna (41), the first antenna (41) is a microstrip antenna, the feed line (5) includes a first feed line (51), and the microstrip antenna is electrically connected to the feeding contact point (11) via the first feed line (51).

3. The electronic device according to claim 2, wherein: The first antenna (41) is a square microstrip antenna, the feed line (5) includes a first feed line (51) and a second feed line (52), and two adjacent edges of the first antenna (41) are electrically connected to the feeding contact point (11) through the first feed line (51) and the second feed line (52), respectively.

4. The electronic device according to claim 2, wherein: The first antenna (41) is a square microstrip antenna, and a first feeding point and a second feeding point are respectively provided on two adjacent edges of the first antenna (41), and the phase difference between the first feeding point and the second feeding point is 90°.

5. The electronic device according to claim 2 or 3, characterized in that: The antenna assembly (4) further comprises a second antenna (42), a third antenna (43) and a fourth antenna (44); the first antenna (41), the second antenna (42), the third antenna (43) and the fourth antenna (44) are arranged at intervals on the inner side of the movable back plate (21) along a direction perpendicular to the sliding direction of the first body (1) and the second body (2).

6. The electronic device according to claim 5, characterized in that The first antenna (41), the second antenna (42), the third antenna (43) and the fourth antenna (44) form an antenna cluster, and the antennas among the first antenna (41), the second antenna (42), the third antenna (43) and the fourth antenna (44) whose radiation efficiency is greater than or equal to a radiation threshold are transmitting antennas of the electronic device, and the antennas among the first antenna (41), the second antenna (42), the third antenna (43) and the fourth antenna (44) whose radiation efficiency is less than the radiation threshold are receiving antennas of the electronic device.

7. The electronic device according to claim 5, characterized in that The antenna whose receiving level among the first antenna (41), the second antenna (42), the third antenna (43) and the fourth antenna (44) is greater than or equal to the level threshold is the transmitting antenna of the electronic device, and the antenna whose receiving level among the first antenna (41), the second antenna (42), the third antenna (43) and the fourth antenna (44) is less than the level threshold is the receiving antenna of the electronic device.

8. The electronic device according to claim 1, wherein: The antenna component (4) is a metal layer arranged on the inner side of the movable back plate (21), and the feeding contact point (11) is an elastic metal part; When the second body (2) and the first body (1) are close to each other, the metal layer is separated from the elastic metal part; when the second body (2) and the first body (1) are away from each other, the metal layer is electrically connected to the elastic metal part.

9. The electronic device according to claim 8, wherein: A plurality of slits (45) are provided on the metal layer so that the metal layer and the cavity form a resonant cavity antenna.

10. The electronic device according to claim 1, wherein The thickness of the antenna component (4) is less than or equal to 0.1 mm.

11. The electronic device according to claim 1, wherein: The movable back plate (21) is a non-metal back plate.

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