Patent Description:
A mobile communications network provided by an operator is needed for communication between intelligent terminals such as mobile phones. A communication connection between intelligent devices can further be implemented in a plurality of manners such as wireless fidelity (Wireless Fidelity, Wi-Fi), Bluetooth, and infrared. For a mobile phone, communication signals are sent and received through antennas. Because the mobile phone performs communication in various manners, a relatively large quantity of antennas need to be disposed inside the mobile phone.

Currently, when the antennas are disposed in the mobile phone, as shown in <FIG>, specifically, gaps are disposed at a top part and a bottom part of a metal frame <NUM> of the mobile phone, to form a first antenna 1a and a second antenna 1b. The first antenna 1a includes a top metal frame and parts of metal side frames, and the second antenna 1b includes a bottom metal frame and parts of the metal side frames.

When side frames of a mobile phone are non-metal frames, for example, when the side frames of the mobile phone are glass frames, a total length of metal frames that can be used as antennas is reduced. Consequently, there is no sufficient length space in the mobile phone for arranging all antennas. <CIT> describes a mobile device that includes a ground element, a first radiation element, a second radiation element, a matching circuit, and a first metal frame. <CIT> describes an antenna system for a mobile device that includes a first electrically conductive member having a plurality of segments including at least a first corner segment and a central segment that is disposed adjacent to the first corner segment. <CIT> describes an antenna structure that includes a metal housing, a first resonance portion, a second resonance portion, an extending portion, and a signal feed source. <CIT> describes an antenna comprising an antenna body and an antenna branch, wherein one end of the antenna branch is connected to the antenna body, and the other end thereof is connected to a feed point of a main radio frequency path; the end of the antenna branch which is connected to the feed point of the main radio frequency path is also connected to the antenna body by means of a first adjustable device; and the first adjustable device comprises an off state and an on state. <CIT> describes a portable wireless telecom equipment's metal frame antenna. <CIT> describes an electronic device including a support member on which an antenna radiator is formed.

This application provides an antenna assembly and an electronic device with a rollable display, to increase a length of an antenna, ensure radiation efficiency of the antenna, and resolve a problem in an existing mobile phone that a length for arranging antennas in the mobile phone is insufficient due to reduction of metal frames that can be used as antennas. In accordance with the invention, there is provided an electronic device as device in the appended claims.

A first aspect provides an antenna assembly, used in an electronic device. The antenna assembly includes a first antenna, and the first antenna includes a first radiator, a first extension stub, and a first feed point and a first ground point that are electrically connected to the first extension stub. One end of the first extension stub is connected to the first radiator, the other end of the first extension stub extends into the electronic device, and the first radiator is a part of a top metal frame or a part of a bottom metal frame of the electronic device.

The first antenna includes the first radiator and the first extension stub connected to the first radiator, and the first radiator is located on the top metal frame or the bottom metal frame of the electronic device. In this way, the first radiator can radiate an electromagnetic wave to the outside, so that radiation efficiency of the first antenna is ensured. The first extension stub extends into the electronic device. In this way, when a side edge of the electronic device is a non-metal frame, disposition of the first extension stub increases a length of the first antenna. This ensures that the first antenna has a sufficient length, and ensures that an antenna with a sufficient length can be disposed in the electronic device. Therefore, a problem in an existing mobile phone that a length for arranging antennas in the mobile phone is insufficient due to reduction of metal frames that can be used as antennas is resolved.

In a possible implementation, the antenna assembly further includes a second antenna. The second antenna includes at least a second radiator, a second extension stub, and a second feed point and a second ground point that are electrically connected to the second extension stub, one end of the second extension stub is connected to the second radiator, and the other end of the second extension stub extends into the electronic device.

The first radiator is located at one end of the top metal frame, and the second radiator is located at the other end of the top metal frame.

Alternatively, the first radiator is located at one end of the bottom metal frame, and the second radiator is located at the other end of the bottom metal frame. Alternatively, the first radiator is located at one end of the top metal frame, and the second radiator is located at one end of the bottom metal frame; or the first radiator is located at one end of the bottom metal frame, and the second radiator is located at one end of the top metal frame.

The second extension stub is disposed, so that the second extension stub increases a length of the second antenna. This ensures that the second antenna has a sufficient length.

In a possible implementation, the antenna assembly further includes a third antenna. The third antenna includes at least a third radiator and a third feed point and a third ground point that are electrically connected to the third radiator.

The third radiator is located between the first radiator and the second radiator, a first gap exists between one end of the third radiator and the first radiator, a second gap exists between the other end of the third radiator and the second radiator.

In this way, the third antenna may use a radiation stub of the first antenna or the second antenna, and the first antenna and the second antenna may use the radiator of the third antenna for radiation, to ensure that the third antenna, the first antenna, and the second antenna excite corresponding resonance frequencies when lengths of the third antenna, the first antenna, and the second antenna are relatively small.

In a possible implementation, the antenna assembly further includes a fourth antenna. The fourth antenna includes at least a fourth radiator, a fourth extension stub, and a fourth feed point and a fourth ground point that are electrically connected to the fourth extension stub.

One end of the fourth extension stub is connected to the fourth radiator, the other end of the fourth extension stub extends into the electronic device, one of the fourth radiator and the first radiator is a part of the top metal frame, and the other is a part of the bottom metal frame.

A length of the fourth antenna is increased by using the fourth extension stub, to ensure that more antennas can be disposed in the electronic device.

In a possible implementation, the antenna assembly further includes a fifth antenna. The fifth antenna includes at least a fifth radiator, a fifth extension stub, and a fifth feed point and a fifth ground point that are electrically connected to the fifth extension stub, one end of the fifth extension stub is connected to the fifth radiator, and the other end of the fifth extension stub extends into the electronic device.

The fourth radiator is located at one end of the top metal frame, and the fifth radiator is located at the other end of the top metal frame; or the fourth radiator is located at one end of the bottom metal frame, and the fifth radiator is located at the other end of the bottom metal frame. Alternatively, one of the fourth radiator, the fifth radiator, the first radiator, and the second radiator is located at one end of the top metal frame, another one is located at the other end of the top metal frame, the 3rd one is located at one end of the bottom metal frame, and the 4th one is located at the other end of the bottom metal frame.

A length of the fifth antenna is increased by using the fifth extension stub, to ensure that an enough long antenna can be disposed in the electronic device.

In a possible implementation, the antenna assembly further includes a sixth antenna. The sixth antenna includes at least a sixth radiator and a sixth feed point and a sixth ground point that are electrically connected to the sixth radiator.

The sixth radiator is located between the fourth radiator and the fifth radiator, there is a gap between one end of the sixth radiator and the fourth radiator, and a third gap exists between one end of the sixth radiator and the fourth radiator, a fourth gap exists between the other end of the sixth radiator and the fifth radiator. The sixth antenna is disposed, and the radiator of the sixth antenna is located between the fifth antenna and the fourth antenna. In this way, the sixth antenna may use a radiation stub of the fourth antenna or the fifth antenna, and the fourth antenna and the fifth antenna may use the radiator of the sixth antenna for radiation, to ensure that the sixth antenna, the fifth antenna, and the fourth antenna excite corresponding resonance frequencies when lengths of the sixth antenna, the fifth antenna, and the fourth antenna are relatively small.

In a possible implementation, the third antenna further includes a first tuning circuit, one end of the first tuning circuit is electrically connected to the third radiator through a first tuning contact, and the other end of the first tuning circuit is grounded.

The sixth antenna further includes a second tuning circuit, one end of the second tuning circuit is electrically connected to the sixth radiator through a second tuning contact, and the other end of the second tuning circuit is grounded.

The first tuning circuit can enable the third antenna to cover an entire bandwidth of a low band when the third antenna is used as a low-band antenna, and the second tuning circuit can enable the sixth antenna to cover an entire bandwidth of a low band when the sixth antenna is used as a low-band antenna.

In a possible implementation, the first tuning circuit and the second tuning circuit each include a tuning switch and at least one matching circuit, one end of the matching circuit is electrically connected to the tuning switch, and the other end of the matching circuit is grounded. The third antenna and the sixth antenna can be switched to matching paths with different load by using tuning switches, so that the third antenna and the sixth antenna cover more bandwidths.

In a possible implementation, the first radiator, the second radiator, and the third radiator are three metal frames formed by disposing two gaps on the top metal frame.

The fourth radiator, the fifth radiator, and the sixth radiator are three metal frames formed by disposing two gaps on the bottom metal frame.

In this way, the top metal frame may be used as the first radiator, the second radiator, and the third radiator to transmit an electromagnetic wave to the outside, and the bottom metal frame may be used as the fourth radiator, the fifth radiator, and the sixth radiator. This avoids additionally disposing an antenna radiator in the electronic device. In addition, when the top metal frame and the bottom metal frame are used as antenna radiators, because the top metal frame and the bottom metal frame are located at the top and the bottom of the electronic device, radiation efficiency is relatively high.

In a possible implementation, the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub each are in a suspended bridge structure in the electronic device.

This ensures that the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub have appropriate clearances in the electronic device.

In a possible implementation, the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub are four metal stubs formed by ea metal middle plate in the electronic device separately extending toward the top metal frame and the bottom metal frame.

In this way, the metal middle plate is integrated with the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub, and one end of each of the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub is grounded by using the metal middle plate. This avoids a case in which a spring plate is disposed between the extension stub and the metal middle plate for grounding.

In a possible implementation, lengths of the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub are in a range of <NUM> to <NUM>.

In a possible implementation, lengths of the first radiator, the second radiator, the fourth radiator, and the fifth radiator are in a range of <NUM> to <NUM>. This ensures that the first antenna, the second antenna, the fourth antenna, and the fifth antenna can be used as medium- and high-band antennas.

In a possible implementation, lengths of the third radiator and the sixth radiator are in a range of <NUM> to <NUM>. This can ensure that the third radiator and the sixth radiator can be used as low-band antennas.

In a possible implementation, clearances of the first radiator, the second radiator, and the third radiator are in a range of <NUM> to <NUM>.

Clearances of the fourth radiator, the fifth radiator, and the sixth radiator are in a range of <NUM> to <NUM>.

Clearances of the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub are not less than <NUM>. This ensures that each radiator and each extension stub have specific clearance regions during working, so that radiation efficiency of each radiator and each extension stub is higher.

In a possible implementation, a gap width of the first gap and the second gap are in a range of <NUM> to <NUM>. This ensures that capacitive loading is formed at the gap between one end of the third radiator and one end of the first radiator and the gap between the other end of the third radiator and one end of the second radiator, so that the third antenna can use the radiation stub of the first antenna or the second antenna, and the first antenna and the second antenna can use the radiation stub of the third antenna.

A gap width of the third gap and the fourth gap are in a range of <NUM> to <NUM>. This ensures that capacitive loading is formed at the gap between one end of the sixth radiator and one end of the fourth radiator and the gap between the other end of the sixth radiator and one end of the fifth radiator, so that the sixth antenna can use the radiation stub of the fourth antenna or the fifth antenna, and the fourth antenna and the fifth antenna can use the radiation stub of the sixth antenna.

In a possible implementation, the antenna assembly further includes at least one high-band antenna located in the electronic device, and each high-band antenna includes a high-band radiator and a feed point and a ground point that are electrically connected to the high-band radiator.

The at least one high-band antenna is disposed, so that a high band covered by the antenna is extended, and a high-band communication requirement is met.

In a possible implementation, the high-band antenna is located on an inner side of a radiation stub of the first antenna, a radiation stub of the second antenna, a radiation stub of the fourth antenna, or a radiation stub of the fifth antenna.

A clearance of the high-band antenna is greater than or equal to <NUM>. This ensures that radiation efficiency of the high-band antenna is relatively high.

In a possible implementation, the third antenna is a low-band antenna, the first antenna and the second antenna are medium- and high-band antennas, the first antenna and the second antenna use the radiator of the third antenna, and the third antenna uses the radiation stub of the first antenna or the second antenna. In this way, the third antenna and one of the first antenna and the second antenna may be used as main antennas, and the other of the first antenna and the second antenna may be used as a medium- and high-band MIMO antenna or a Wi-Fi antenna.

The sixth antenna is a low-band antenna, the fourth antenna and the fifth antenna are medium- and high-band antennas, the fifth antenna and the fourth antenna use the radiator of the sixth antenna, and the sixth antenna uses the radiation stub of the fourth antenna or the fifth antenna. In this way, the sixth antenna and one of the fourth antenna and the fifth antenna may be used as diversity antennas, and the other of the fifth antenna and the fourth antenna may be used as a medium- and high-band MIMO antenna, a Wi-Fi antenna, or a GPS antenna.

A second aspect provides an electronic device as defined in claim <NUM>.

The antenna assembly of the first aspect is included, and at least one of the top frame and the bottom frame of the middle frame is a metal frame. In this way, the metal frame may be used as a radiator of an antenna in the antenna assembly, and an extension stub in the antenna assembly can increase a length of the antenna, so that when a side frame of the electronic device is a non-metal frame, it is ensured that the antenna has a sufficient length. This avoids a problem that a length for arranging antennas is insufficient because a metal frame is shortened, and resolves a problem in an existing mobile phone that a length for arranging antennas in the mobile phone is insufficient due to reduction of metal frames that can be used as antennas.

In a possible implementation, the middle frame includes a metal middle plate and a top metal frame and a bottom metal frame that are located at two ends of the metal middle plate, the metal middle plate is located in space enclosed by the rollable display and the rear cover, and the top metal frame and the bottom metal frame are respectively located at the top and the bottom of the rollable display and the rear cover.

In a possible implementation, there are at least two gaps on each of the top metal frame and the bottom metal frame, and the at least two gaps divide the top metal frame into a first radiator, a second radiator, and a third radiator located between the first radiator and the second radiator that are of the antenna assembly.

The at least two gaps divide the bottom metal frame into at least a fourth radiator, a fifth radiator, and a sixth radiator located between the fourth radiator and the fifth radiator that are of the antenna assembly.

In a possible implementation, there are curly parts curling toward the rear cover on two sides of the rollable display, and a first extension stub, a second extension stub, a fourth extension stub, and a fifth extension stub in the antenna assembly extend into the space enclosed by the rollable display and the rear cover. In this way, a left side surface and a right side surface of the electronic device belong to the display, so that a screen-to-body ratio of the electronic device is high. This ensures that an enough long antenna can still be disposed when the metal frame in the electronic device is shortened.

In a possible implementation, two side edges of the metal middle plate respectively extend toward the top metal frame and the bottom metal frame to form the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub. In this way, the metal middle plate is integrated with the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub, and one end of each of the first extension stub, the second extension stub, the fourth extension stub, and the fifth extension stub can be grounded by using the metal middle plate. This avoids a case in which a spring plate is disposed between the extension stub and the metal middle plate for grounding.

In a possible implementation, the rollable display includes a glass layer and a display layer, there are first curly parts curling toward the rear cover on two sides of the glass layer, and there are second curly parts curling toward the rear cover on two sides of the display layer.

In a possible implementation, a curling angle of the first curly part is in a range of <NUM>° to <NUM>°.

A curling angle of the second curly part is in a range of <NUM>° to <NUM>°. In this way, the left and right side surfaces and partial rear surfaces of the electronic device are all display regions, so that a problem that the screen-to-body ratio is reduced due to existence of left and right black borders of the electronic device is avoided. In embodiments of this application, a high screen-to-body ratio of the electronic device is implemented.

In a possible implementation, the rear cover is a glass rear cover. In this way, interference caused by the glass rear cover to the antenna disposed in the electronic device is reduced, and it is ensured that the antenna in the electronic device has higher radiation efficiency.

Embodiments of this application provide an electronic device, including but not limited to a mobile or fixed terminal with an antenna, such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a handheld computer, a walkie-talkie, a netbook, a POS terminal, a personal digital assistant (personal digital assistant, PDA), a wearable device, a virtual reality device, a wireless USB flash drive, a Bluetooth speaker/headset, or a vehicle-mounted factory-installed device.

In embodiments of this application, an example in which the foregoing electronic device is a mobile phone <NUM> is used for description. The mobile phone <NUM> provided in embodiments of this application may be a mobile phone with a rollable display. <FIG> and <FIG> respectively show an overall structure and a split structure of the mobile phone <NUM>. As shown in <FIG> and <FIG>, the mobile phone <NUM> may include a display <NUM>, a rear cover <NUM>, a middle frame <NUM>, and a circuit board <NUM>. The circuit board <NUM> may be disposed on a surface that is of the middle frame <NUM> and that faces the rear cover <NUM>, and the display <NUM> and the rear cover <NUM> may be respectively located on two sides of the middle frame <NUM>. Components are disposed at the top and the bottom of the mobile phone <NUM>. Therefore, in this embodiment of this application, the circuit board <NUM> may include a first circuit board <NUM> and a second circuit board <NUM>. The first circuit board <NUM> and the second circuit board <NUM> may be electrically connected by using a flexible printed circuit or a leading wire. The first circuit board <NUM> may be located at an upper part of the middle frame <NUM>, and the second circuit board <NUM> may be located at a lower part of the middle frame <NUM>. In this way, interfaces disposed at the top and the bottom of the mobile phone <NUM> can be electrically connected to the circuit board <NUM>.

To increase a screen-to-body ratio, in this embodiment of this application, as shown in <FIG>, left and right sides of the display <NUM> curl toward the rear cover <NUM>, so that the left and right sides of the electronic device are display regions of a screen. In this way, the mobile phone <NUM> has no black border in left and right directions, and a bezel-less "full view screen" is implemented on the left and right sides of the electronic device.

In this embodiment of this application, because the left and right sides of the display <NUM> curl to a rear surface of the mobile phone <NUM>, as shown in <FIG>, the middle frame <NUM> includes a metal middle plate <NUM>, a top frame <NUM>, and a bottom frame <NUM>. The top frame <NUM> and the bottom frame <NUM> may be respectively located at the top and the bottom of the metal middle plate <NUM>. When assembly is completed, the top frame <NUM> and the bottom frame <NUM> are respectively located at the top and the bottom of the display <NUM> and the rear cover <NUM> (as shown in <FIG>). The top frame <NUM> and the bottom frame <NUM> are exposed, and the metal middle plate <NUM> is located in space enclosed by the display <NUM>, the rear cover <NUM>, the top frame <NUM>, and the bottom frame <NUM>. In this way, a display surface of the mobile phone <NUM> has two frames: the top frame <NUM> and the bottom frame <NUM>, there is no frame on side surfaces of the display surface, and the screen-to-body ratio of the mobile phone <NUM> may reach <NUM>%. In this embodiment of this application, a material of the metal middle plate <NUM> includes but is not limited to an aluminum alloy, stainless steel, a steel-aluminum composite die-casting plate, or a titanium alloy.

The top frame <NUM> and the bottom frame <NUM> may be metal frames, or the top frame <NUM> and the bottom frame <NUM> may be non-metal frames, for example, may be ceramic frames or glass frames. When the top frame <NUM> and the bottom frame <NUM> are metal frames, a material of the metal frames includes but is not limited to an aluminum alloy, stainless steel, a steel-aluminum composite die-casting plate, or a titanium alloy.

To help the two sides of the display <NUM> curl toward the rear cover <NUM>, in this embodiment of this application, the mobile phone <NUM> further includes brackets located on two sides of the metal middle plate <NUM>, for example, a bracket 13a and a bracket 13b. The bracket 13a and the bracket 13b are located between the top frame <NUM> and the bottom frame <NUM>. The bracket 13a may be connected to one side of the metal middle plate <NUM>, and the bracket 13b may be connected to the other side of the metal middle plate <NUM>. When the two sides of the display <NUM> curl, the bracket 13a and the bracket 13b provide support for two curly parts of the display <NUM>, and the two sides of the display <NUM> may curl toward the rear cover <NUM> under support of the brackets.

The bracket 13a and the bracket 13b may be connected to the metal middle plate <NUM> through clamping, adhesion, or fasteners (for example, screws). In this embodiment of this application, the bracket 13a and the bracket 13b may be non-metal brackets, for example, may be plastic brackets. In this way, a weight of the mobile phone <NUM> can be reduced.

In this embodiment of this application, because the display <NUM> needs to be curled, the display <NUM> may be a flexible display <NUM>. For example, the flexible display <NUM> may be an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display. Generally, as shown in <FIG>, when the display <NUM> is an OLED display, the display <NUM> may include a display layer <NUM> and a glass layer <NUM>. The glass layer <NUM> covers the display layer <NUM>, and a size of the glass layer <NUM> may be greater than or equal to a size of the display layer <NUM>. Because the display needs to be curled, the glass layer <NUM> may be a bendable glass layer. The display layer <NUM> may include a plurality of function layers. For example, the plurality of function layers may be film layers such as an organic light-emitting layer, an anode layer, a cathode layer, and a thin film transistor (Thin Film Transistor, TFT) layer. Therefore, the display layer <NUM> includes a plurality of metal layers. In another example, the display <NUM> may further include a touch layer (not shown), and the touch layer may be disposed between the display layer <NUM> and the glass layer <NUM>. Alternatively, the touch layer may be integrated into the display layer <NUM> to form a touch display panel integrating a touch function and a display function, and the glass layer <NUM> covers the touch display panel.

After the two sides of the display <NUM> curl toward the rear cover <NUM>, curly parts are formed on the two sides of the display <NUM>. For example, as shown in <FIG>, first curly parts <NUM> are formed on two sides of the glass layer <NUM> in a curling process, and second curly parts <NUM> are formed on two sides of the display layer <NUM> in the curling process. As shown in <FIG>, the curly parts of the display <NUM> extend to the rear cover <NUM>, and the rear cover <NUM> may be connected to the glass layer <NUM> of the display <NUM>.

As shown in <FIG>, a curling angle of the first curly part <NUM> of the glass layer <NUM> in the display <NUM> may be in a range of <NUM>° to <NUM>°. For example, in <FIG>, the curling angle of the first curly part <NUM> of the glass layer <NUM> in the display <NUM> may be <NUM>°, and the two sides of the glass layer <NUM> curl from the display surface to the rear cover <NUM>. In this way, both a left side surface and a right side surface of the mobile phone <NUM> belong to the glass layer <NUM>. Alternatively, in another example, the curling angle of the first curly part <NUM> of the glass layer <NUM> may be <NUM>°. The curling angle of the first curly part <NUM> may be any angle between <NUM>° and <NUM>°.

In this embodiment of this application, a curling angle of the second curly part <NUM> of the display layer <NUM> in the display <NUM> may be in a range of <NUM>° to <NUM>°. For example, in <FIG>, the curling angle of the second curly part <NUM> of the display layer <NUM> in the display <NUM> may be <NUM>°. In this way, the left and right side surfaces and partial rear surfaces of the electronic device are all display regions, so that a problem that the screen-to-body ratio is reduced due to existence of left and right black borders of the electronic device is avoided. Certainly, in this embodiment of this application, the curling angle of the second curly part <NUM> of the display layer <NUM> in the display <NUM> may be any value between <NUM>° and <NUM>°. For example, the curling angle of the second curly part of the display layer <NUM> may be <NUM>°.

It should be noted that, in the foregoing description, the curling angle ranges of the first curly part <NUM> and the second curly part <NUM> may include endpoint values. For example, when the curling angle of the first curly part <NUM> is in the range of <NUM>° to <NUM>°, the endpoint value <NUM>° and the endpoint value <NUM>° are included.

In the following description of embodiments of this application, an example in which the second curly part <NUM> of the display layer <NUM> in the display <NUM> curls by <NUM>° and the first curly part <NUM> of the glass layer <NUM> curls by <NUM>° in <FIG> is used for description.

In a possible implementation, in this embodiment of this application, the top frame <NUM> and the bottom frame <NUM> may be metal frames. For example, a material of the top frame <NUM> and the bottom frame <NUM> may be an aluminum alloy, stainless steel, a steel-aluminum composite die-casting plate, or a titanium alloy. The rear cover <NUM> may be a glass rear cover.

When the top frame <NUM> and the bottom frame <NUM> are metal frames, the top frame <NUM> and the bottom frame <NUM> may be used as radiators of an antenna. However, because the display <NUM> of the electronic device is curly, both the left side surface and the right side surface of the electronic device belong to the glass layer <NUM>. In this case, neither the left side surface nor the right side surface of the electronic device can be used as an antenna. For example, for a mobile phone <NUM> with a width of <NUM>, in the conventional technology (with reference to antenna distribution in <FIG>), a total length of metal frames that can be used as antennas may be <NUM> (top: <NUM> + <NUM> + <NUM> = <NUM>, bottom: <NUM> + <NUM> + <NUM> = <NUM>). However, after the display <NUM> of the mobile phone <NUM> curls, because side surfaces belong to the glass layer <NUM>, metal frames that can be used as antennas include only the top frame <NUM> and the bottom frame <NUM>. A length of the metal frames that can be used as antennas is <NUM>. As a result, the length of the metal frames that can be used as antennas is reduced by approximately <NUM>%. In this case, there is no sufficient length for arranging all antennas. If an antenna bracket or an antenna separated from the top frame <NUM> and the bottom frame <NUM> is disposed at a position close to the curly part of the display <NUM> in the mobile phone <NUM> to increase an antenna length, because the display layer <NUM> of the display <NUM> has a metal layer, and the metal layer curls upward at the curly part, the metal layer in the display layer <NUM> shields a radiation aperture of a side antenna of the mobile phone <NUM>, and consequently, radiation efficiency of the antenna disposed on the side of the mobile phone <NUM> is greatly reduced.

Based on the foregoing description, in this embodiment of this application, as shown in <FIG>, there are at least two gaps on each of the top frame <NUM> and the bottom frame <NUM>. For example, there is a gap a and a gap b on the top frame <NUM>. The gap a and the gap b divide the top frame <NUM> into a first radiator <NUM>, a second radiator <NUM>, and a third radiator <NUM> located between the first radiator <NUM> and the second radiator <NUM>. There is a gap c and a gap d on the bottom frame <NUM>. The gap c and the gap d divide the bottom frame <NUM> into a fourth radiator <NUM>, a fifth radiator <NUM>, and a sixth radiator <NUM> located between the fourth radiator <NUM> and the fifth radiator <NUM>.

For example, as shown in <FIG>, lengths L1 of the third radiator <NUM> and the sixth radiator <NUM> may be in a range of <NUM> to <NUM>. For example, the length of the third radiator <NUM> may be <NUM>, or the length of the third radiator <NUM> may be <NUM>. The lengths of the third radiator <NUM> and the sixth radiator <NUM> may be the same or may be different.

In this embodiment of this application, as shown in <FIG>, to prevent the metal layer in the display layer <NUM> and the metal middle plate <NUM> from interfering with the radiators, a minimum distance h1 between the metal middle plate <NUM> or the display layer <NUM> and each of the first radiator <NUM>, the second radiator <NUM>, and the third radiator <NUM> may be in a range of <NUM> to <NUM>. For example, the minimum distance h1 between the metal middle plate <NUM> or the display layer <NUM> and each of the first radiator <NUM>, the second radiator <NUM>, and the third radiator <NUM> may be <NUM>, or may be <NUM>. In this way, it can be ensured that clearances of the first radiator <NUM>, the second radiator <NUM>, and the third radiator <NUM> may be in a range of <NUM> to <NUM>.

For example, as shown in <FIG>, a minimum distance h2 between the metal middle plate <NUM> or the display layer <NUM> and each of the fourth radiator <NUM>, the fifth radiator <NUM>, and the sixth radiator <NUM> may be in a range of <NUM> to <NUM>. For example, the minimum distance h1 between the metal middle plate <NUM> or the display layer <NUM> and each of the fourth radiator <NUM>, the fifth radiator <NUM>, and the sixth radiator <NUM> may be <NUM>, or may be <NUM>. In this way, it can be ensured that clearances of the fourth radiator <NUM>, the fifth radiator <NUM>, and the sixth radiator <NUM> may be in a range of <NUM> to <NUM>.

For example, as shown in <FIG>, lengths L3 of the first radiator <NUM>, the second radiator <NUM>, the fourth radiator <NUM>, and the fifth radiator <NUM> may be in a range of <NUM> to <NUM>. For example, the lengths L3 of the first radiator <NUM>, the second radiator <NUM>, the fourth radiator <NUM>, and the fifth radiator <NUM> may be <NUM>, or the lengths L3 of the first radiator <NUM>, the second radiator <NUM>, the fourth radiator <NUM>, and the fifth radiator <NUM> may be <NUM>. In this embodiment of this application, the lengths of the first radiator <NUM>, the second radiator <NUM>, the fourth radiator <NUM>, and the fifth radiator <NUM> may be the same or may be different.

For example, as shown in <FIG>, gap widths L2 of the gap a, the gap b, the gap c, and the gap d may be in a range of <NUM> to <NUM>. For example, the gap widths L2 of the gap a, the gap b, the gap c, and the gap d may be <NUM>, or the gap widths L2 of the gap a, the gap b, the gap c, and the gap d may be <NUM>.

It should be noted that, when the fourth radiator <NUM>, the fifth radiator <NUM>, and the sixth radiator <NUM> are radiation stubs of a main antenna (Main Antenna) of the mobile phone <NUM>, clearances of the fourth radiator <NUM>, the fifth radiator <NUM>, and the sixth radiator <NUM> are greater than clearances of the first radiator <NUM>, the second radiator <NUM>, and the third radiator <NUM>. This ensures that the main antenna of the mobile phone <NUM> has higher radiation efficiency.

In this embodiment of this application, during assembly of the mobile phone, a plastic material may be injected into each gap and a spacing region between the frame and the metal middle plate in a nano-injection molding manner, so that each frame and the metal middle plate form an overall structure.

In this embodiment of this application, to increase a length of the antenna, at least one extension stub is further included. For example, as shown in <FIG>, four extension stubs are disposed: a first extension stub 21a, a second extension stub 21b, a fourth extension stub 23a, and a fifth extension stub 23b. One end of the first extension stub 21a is electrically connected to the first radiator <NUM>, and the other end of the first extension stub 21a extends into space enclosed by the display <NUM> and the rear cover <NUM>. In this way, the first extension stub 21a of a first antenna <NUM> is embedded inside the mobile phone. The first radiator <NUM> and the first extension stub 21a form a radiation stub of the first antenna <NUM>. One end of the second extension stub 21b is electrically connected to the second radiator <NUM>, and the other end of the second extension stub 21b extends into the space enclosed by the display <NUM> and the rear cover <NUM>. The second radiator <NUM> and the second extension stub 21b form a radiation stub of a second antenna <NUM>. One end of the fourth extension stub 23a is electrically connected to the fourth radiator <NUM>, and the other end of the fourth extension stub 23a extends into the space enclosed by the display <NUM> and the rear cover <NUM>. The fourth radiator <NUM> and the fourth extension stub 23a form a radiation stub of a fourth antenna <NUM>. One end of the fifth extension stub 23b is electrically connected to the fifth radiator <NUM>, and the other end of the fifth extension stub 23b extends into the space enclosed by the display <NUM> and the rear cover <NUM>. The fifth radiator <NUM> and the fifth extension stub 23b form a radiation stub of a fifth antenna <NUM>.

In this embodiment of this application, a material of the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b may be the same as or different from the material of the metal middle plate <NUM>, the top frame <NUM>, and the bottom frame <NUM>. For example, in this embodiment of this application, the material of the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b may include but is not limited to an aluminum alloy, stainless steel, a steel-aluminum composite die-casting plate, or a titanium alloy.

In this embodiment of this application, the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b are added. In this way, the length of the antenna is increased, so that antenna length insufficiency is effectively compensated for. In addition, the added first extension stub 21a, second extension stub 21b, fourth extension stub 23a, and fifth extension stub 23b are located in the space enclosed by the display <NUM> and the rear cover <NUM>, and the first radiator <NUM>, the second radiator <NUM>, the fourth radiator <NUM>, and the fifth radiator <NUM> that are electrically connected to the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b are located at the top and the bottom of the mobile phone <NUM>. In this way, the first radiator <NUM>, the second radiator <NUM>, the fourth radiator <NUM>, and the fifth radiator <NUM> can radiate outward, so that antenna radiation efficiency is ensured on the basis of extending the antenna.

In this embodiment of this application, after the other ends of the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b extend into the space enclosed by the display <NUM> and the rear cover <NUM>, as shown in <FIG>, the other ends of the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b may be connected to the metal middle plate <NUM> to implement grounding (because the metal middle plate <NUM> is electrically connected to a ground point of the circuit board <NUM>), or may be connected to the ground point of the circuit board <NUM> to implement grounding.

In this embodiment of this application, when the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b are disposed in the space enclosed by the display <NUM> and the rear cover <NUM>, the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b may be disposed close to space enclosed by the second curly parts <NUM> of the display layer <NUM>. For example, the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b may be wrapped by the second curly parts <NUM> of the display layer <NUM>. Alternatively, the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b may be disposed in an extension manner in a direction parallel to an axial direction of the second curly parts <NUM>. Alternatively, the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b may be disposed obliquely in the space enclosed by the display <NUM> and the rear cover <NUM>.

In this embodiment of this application, when the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b are respectively connected to the first radiator <NUM>, the second radiator <NUM>, the fourth radiator <NUM>, and the fifth radiator <NUM>, T-shaped radiation stubs may be formed.

In this embodiment of this application, the mobile phone <NUM> may include at least one antenna, for example, may include one or more antennas. For example, as shown in <FIG>, the mobile phone <NUM> may include six antennas: a first antenna <NUM>, a second antenna <NUM>, a third antenna <NUM>, a fourth antenna <NUM>, a fifth antenna <NUM>, and a sixth antenna <NUM>. The first antenna <NUM>, the second antenna <NUM>, and the third antenna <NUM> may be located at the top of the mobile phone <NUM>, and the fourth antenna <NUM>, the fifth antenna <NUM>, and the sixth antenna <NUM> may be located at the bottom of the mobile phone <NUM>. The second antenna <NUM> and the third antenna <NUM> may be diversity antennas (Div Antenna), and the first antenna <NUM> may be a Wi-Fi antenna, a Bluetooth antenna, and a GPS antenna. To be specific, the first antenna <NUM> may be a dual-band antenna (the Wi-Fi antenna and the Bluetooth antenna use one band, and the GPS antenna uses another band). The fifth antenna <NUM> and the sixth antenna <NUM> may be main antennas (Main Antenna), and the fourth antenna may be a medium- and high-band multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) antenna. When the fifth antenna <NUM> and the sixth antenna <NUM> are main antennas, the main antennas are located at the bottom of the mobile phone, so that a specific absorption rate (Specific Absorption Rate, SAR) of the mobile phone <NUM> is relatively low.

For example, the first antenna <NUM> may include the first radiator <NUM>, the first extension stub 21a, a first feed b1, a first feed point a1, and a first ground point c1. Both the first feed point a1 and the first ground point c1 are electrically connected to the first extension stub 21a, the first feed b1 feeds a high-frequency current into the first extension stub 21a through the first feed point a1, and the high-frequency current is converted on the first extension stub 21a and the first radiator <NUM> and is transmitted in an electromagnetic wave manner. In this embodiment of this application, the first extension stub 21a and the first radiator <NUM> are the radiation stub of the first antenna <NUM>.

The second antenna <NUM> may include the second radiator <NUM>, the second extension stub 21b, a second feed b2, a second feed point a2, and a second ground point c2. Both the second feed point a2 and the second ground point c2 are electrically connected to the second extension stub 21b. The second feed b2 is electrically connected to the second feed point a2, and the second extension stub 21b and the second radiator <NUM> are the radiation stub of the second antenna <NUM>.

Disposition of the first extension stub 21a and the second extension stub 21b increases lengths of the first antenna <NUM> and the second antenna <NUM>, so that more antennas can be disposed.

The third antenna <NUM> may include the third radiator <NUM>, a third feed b3, a third feed point a3, and a third ground point c3. Both the third feed point a3 and the third ground point c3 are connected to the third radiator <NUM>, and the third feed b3 is electrically connected to the third feed point a3.

In this embodiment of this application, the first antenna <NUM>, the second antenna <NUM>, and the third antenna <NUM> disposed at the top of the mobile phone <NUM> respectively have the first feed point a1, the second feed point a2, and the third feed point a3. In this way, the antennas at the top of the mobile phone <NUM> have three independent feeding ports. One of the first antenna <NUM>, the second antenna <NUM>, and the third antenna <NUM> may be a low-band antenna, another one may be a medium- and high-band antenna, and the 3rd antenna may be a MIMO antenna covering medium and high frequencies. For example, the first antenna <NUM> and the third antenna <NUM> may be diversity antennas (Div Antenna) covering low, medium, and high frequencies, and the second antenna <NUM> may be a MIMO antenna. Alternatively, the second antenna <NUM> and the third antenna <NUM> may be diversity antennas covering low, medium, and high frequencies, and the first antenna <NUM> may be a Bluetooth antenna (<NUM>), a Wi-Fi antenna (<NUM>), and a GPS antenna. The Bluetooth antenna, the Wi-Fi antenna, and the GPS antenna may share the first antenna <NUM>, and the first antenna <NUM> is a dual-band antenna. Alternatively, the first antenna <NUM> or the second antenna <NUM> may be an antenna covering a <NUM> band, for example, an N77 band (<NUM> to <NUM>) and an N79 band (<NUM> to <NUM>) in the <NUM> band. Compared with a case in which an antenna has one or two independent feeding ports in the conventional technology, in this embodiment of this application, because three independent feeding ports are disposed, one more antenna that can cover medium and high bands can be designed. In this way, the antennas at the top of the mobile phone <NUM> can be designed more freely, and more bands can be covered. It should be noted that, in this embodiment of this application, a quantity of feeding ports disposed at the top of the mobile phone <NUM> includes but is not limited to three.

The fourth antenna <NUM> may include the fourth radiator <NUM>, the fourth extension stub 23a, a fourth feed b4, a fourth feed point a4, and a fourth ground point c4. Both the fourth feed point a4 and the fourth ground point c4 are electrically connected to the fourth extension stub 23a. The fourth extension stub 23a increases a length of the fourth antenna <NUM>.

The fifth antenna <NUM> may include the fifth radiator <NUM>, the fifth extension stub 23b, a fifth feed b5, a fifth feed point a5, and a fifth ground point c5. Both the fifth feed point a5 and the fifth ground point c5 are electrically connected to the fifth extension stub 23b. The fifth extension stub 23b increases a length of the fifth antenna <NUM>.

The sixth antenna <NUM> may include the sixth radiator <NUM>, a sixth feed b6, a sixth feed point a6, and a sixth ground point c6. Both the sixth feed point a6 and the sixth ground point c6 are connected to the sixth radiator <NUM>.

In this embodiment of this application, the fourth antenna <NUM>, the fifth antenna <NUM>, and the sixth antenna <NUM> disposed at the bottom of the mobile phone <NUM> respectively have the fourth feed point a4, the fifth feed point a5, and the sixth feed point a6. In this way, the antennas at the bottom of the mobile phone <NUM> have three independent feeding ports, so that the antennas at the bottom of the mobile phone <NUM> can be designed more freely. One of the fourth antenna <NUM>, the fifth antenna <NUM>, and the sixth antenna <NUM> may be a low-band antenna, another one may be a medium- and high-band antenna, and the 3rd antenna may be designed as an antenna that can cover medium and high frequencies. In this way, the three antennas at the bottom of the mobile phone <NUM> can cover more bands. In this embodiment of this application, the fifth antenna <NUM> and the sixth antenna <NUM> may be main antennas, and the fourth antenna may be a MIMO antenna or an antenna on a <NUM> band (for example, an N77 band (<NUM> to <NUM>) and an N79 band (<NUM> to <NUM>)).

Each feed and each feed point in <FIG> may be located on the circuit board <NUM>, and each ground point may be electrically connected to a ground point of the metal middle plate <NUM> or the circuit board <NUM> to implement grounding.

In this embodiment of this application, when the third ground point c3 of the third antenna <NUM> is disposed, as shown in <FIG>, the third ground point c3 may be closer to the first radiator <NUM> compared with the second radiator <NUM>. For example, a horizontal distance L4 between the third ground point c3 and the gap b may be <NUM>, and a horizontal distance between the third ground point c3 and the gap a may be <NUM>. Alternatively, the third ground point c3 of the third antenna <NUM> may be close to the second radiator <NUM>. The third ground point c3 of the third antenna <NUM> is disposed close to the first radiator <NUM> or the second radiator <NUM>, so that interference caused by the third antenna <NUM> to a nearby radiator under different resonance is reduced. This ensures stable performance of the radiator close to the third ground point c3.

Likewise, the sixth ground point c6 of the sixth antenna <NUM> may be shown in <FIG>. Compared with a distance between the sixth ground point c6 and the fifth radiator <NUM>, a distance between the sixth ground point c6 and the fourth radiator <NUM> is shorter. For example, a horizontal distance between the sixth ground point c6 and the gap d may be <NUM>, and a horizontal distance between the sixth ground point c6 and the gap c may be <NUM>. Alternatively, the sixth ground point c6 of the sixth antenna <NUM> may be close to the fifth radiator <NUM>. The sixth ground point c6 of the sixth antenna <NUM> is disposed close to the fourth radiator <NUM> or the fifth radiator <NUM>, so that performance of a radiator close to the sixth ground point c6 is not prone to be affected by the sixth antenna <NUM>.

In this embodiment of this application, because the third radiator <NUM> is relatively long, the third antenna <NUM> may be a low-band antenna with an operating band of <NUM> to <NUM>. The first antenna <NUM> and the second antenna <NUM> may be medium- and high-band antennas with operating bands of <NUM> to <NUM>. In this way, the third antenna <NUM> and the second antenna <NUM> may be MIMO antennas covering low, medium, and high bands, and the first antenna <NUM> may be a dual-band antenna covering a Wi-Fi antenna (band: <NUM> to <NUM>) and a GPS antenna (operating band: <NUM>±<NUM>). Alternatively, the first antenna <NUM> may be a medium- and high-band MIMO antenna.

Because the sixth radiator <NUM> is relatively long, the sixth antenna <NUM> may be a low-band antenna. The fourth antenna <NUM> and the fifth antenna <NUM> may be medium- and high-band antennas. For example, the sixth antenna <NUM> and the fifth antenna <NUM> may be main antennas covering low, medium, and high bands (for example, the low band is <NUM> to <NUM>, the medium band is <NUM> to <NUM>, and the high band is <NUM> to <NUM>), and the fourth antenna <NUM> may be a medium- and high-band MIMO antenna. Alternatively, the fourth antenna <NUM> may be a dual-band antenna covering a Wi-Fi antenna and a GPS antenna. It should be noted that in this embodiment of this application, types of the first antenna <NUM>, the second antenna <NUM>, the third antenna <NUM>, the fourth antenna <NUM>, the fifth antenna <NUM>, and the sixth antenna <NUM> include but are not limited to the foregoing antennas.

In a possible implementation, as shown in <FIG>, a length H1 of the first extension stub 21a may be in a range of <NUM> to <NUM>. For example, the length H1 of the first extension stub 21a may be <NUM>, or the length H1 of the first extension stub 21a may be <NUM>. A length H2 of the second extension stub 21b may be in a range of <NUM> to <NUM>. For example, the length H2 of the second extension stub 21b may be <NUM>, or the length H1 of the first extension stub 21a may be <NUM>. In this way, the length of the antenna at the top of the mobile phone <NUM> is increased by at least <NUM> to <NUM>, so that antenna length insufficiency is effectively compensated for.

In this embodiment of this application, the first extension stub 21a and the second extension stub 21b are respectively radiation stubs of the first antenna <NUM> and the second antenna <NUM>, and when the first extension stub 21a and the second extension stub 21b are disposed inside the mobile phone <NUM>, clearances of the first extension stub 21a and the second extension stub 21b are not less than <NUM>. For example, a minimum distance h3 between the second extension stub 21b and an inner wall of the display layer <NUM> (for example, surfaces of the display layer <NUM> and the second curly part <NUM> that face the inside of the mobile phone in <FIG>) may be <NUM>.

In this embodiment of this application, as shown in <FIG>, a length H4 of the fourth extension stub 23a may be in a range of <NUM> to <NUM>. For example, the length H4 of the fourth extension stub 23a may be <NUM>, or the length H4 of the fourth extension stub 23a may be <NUM>. A length H3 of the fifth extension stub 23b may be in a range of <NUM> to <NUM>. For example, the length H3 of the fifth extension stub 23b may be <NUM>, or the length H3 of the fifth extension stub 23b may be <NUM>. In this way, the length of the antenna at the bottom of the mobile phone <NUM> is increased by at least <NUM> to <NUM>, so that insufficiency of the length of the antenna at the bottom of the mobile phone <NUM> is effectively compensated for.

Clearances of the fourth extension stub 23a and the fifth extension stub 23b are not less than <NUM>. For example, a minimum distance between the fourth extension stub 23a and the inner wall of the display layer <NUM> may be <NUM>. This ensures that the fourth extension stub 23a and the fifth extension stub 23b have clearance regions inside the mobile phone <NUM>, so that the fourth extension stub 23a and the fifth extension stub 23b have good radiation efficiency.

In a possible implementation, each extension stub may be connected to a corresponding radiator through welding, clamping, a fastener (for example, a screw), or integral molding. In this embodiment of this application, as shown in <FIG>, the first radiator <NUM> has a mounting part 211a. As shown in <FIG>, a plug part 211c that can be plugged into the mounting part 211a exists at an end that is of the first extension stub 21a and that is connected to the first radiator <NUM>. The plug part 211c is connected to the mounting part 211a through a fastener (for example, a screw or a bolt). In this way, the first extension stub 21a is fastened to the first radiator <NUM>. In this embodiment of this application, the connection manner shown in <FIG> may also be used between the remaining three extension stubs and corresponding radiators. Certainly, the four extension stubs and the corresponding radiators may be connected by using, but not limited to, the connection manner between the mounting part 211a and the plug part 211c, or may be connected by using another fitting structure.

In a possible implementation, the first extension stub 21a, the second extension stub 21b, the extension stub of the third antenna <NUM>, and the fourth extension stub 23a each are in a suspended bridge structure in the mobile phone <NUM>. For example, as shown in <FIG>, one end of the first extension stub 21a is connected to the first radiator <NUM>, the other end of the first extension stub 21a is connected to the metal middle plate <NUM>, and the first extension stub 21a is in a suspended bridge structure between the first radiator <NUM> and the metal middle plate <NUM>. In this embodiment, each extension stub may be a suspended bridge structure formed by extending a part of an edge of the metal middle plate <NUM> toward a corresponding radiator. For example, as shown in <FIG>, a side edge of the metal middle plate <NUM> extends to the first radiator <NUM> in a suspended manner and is connected to the first radiator <NUM>. Alternatively, a suspended bridge structure is excavated in a region that is of the metal middle plate <NUM> and that is close to the first radiator <NUM>, and is used as the first extension stub 21a. In this way, one end of the first extension stub 21a is integrated with the metal middle plate <NUM>, and the first ground point c1 is located on the metal middle plate <NUM>. This avoids a case in which a spring plate is disposed between the first extension stub 21a and the metal middle plate <NUM> for grounding.

In this embodiment of this application, when each feed point is electrically connected to a radiator or an extension stub, a feed point structure may be disposed on the radiator or the extension stub. For example, as shown in <FIG>, a feed point structure 211b is disposed on the first extension stub 21a, and the first feed point a1 is electrically connected to a spring plate a11. As shown in <FIG>, after the circuit board <NUM> is mounted, the spring plate a11 abuts the feed point structure 211b to implement an electrical connection. In this embodiment of this application, the remaining feed points each may also be connected to a spring plate, a feed point structure abutting the spring plate is disposed on a radiator or an extension stub, and each feed point is electrically connected to the extension stub or the radiator through abutting between the spring plate and the feed point structure.

In this embodiment of this application, as shown in <FIG>, a connection structure 111a is disposed at the display layer <NUM>. The circuit board <NUM> and the display layer <NUM> may be connected by using the connection structure 111a and a fastener (for example, screw). For example, the connection structure 111a of the display layer <NUM> is connected to the ground point of the circuit board <NUM> by using the fastener. In this way, the display layer <NUM> is grounded.

In a possible implementation, to enable a low-band antenna (for example, the third antenna <NUM> and the sixth antenna <NUM>) to cover more bandwidths, in this embodiment of this application, as shown in <FIG>, the third antenna <NUM> may further include a first tuning contact d1, and the first tuning contact d1 is configured to connect the third radiator <NUM> to a matching circuit. As shown in <FIG>, the sixth antenna <NUM> may further include a second tuning contact d2, and the second tuning contact d2 is configured to connect the third radiator <NUM> to a matching circuit. In this embodiment of this application, the first tuning contact d1 and the second tuning contact d2 may be conductive sheets connected to the third radiator <NUM> and the sixth radiator <NUM>.

In this embodiment of this application, positions at which the first tuning contact d1 and the second tuning contact d2 are connected to the third radiator <NUM> and the sixth radiator <NUM> are specifically set based on a tuning width. A longer distance between the position at which the first tuning contact d1 is connected to the third radiator <NUM> and a position at which the third feed point a3 is connected to the third radiator <NUM> indicates a larger tuning range. However, this affects radiation efficiency. Therefore, when a required band can be covered during tuning, the position at which the first tuning contact d1 is connected to the third radiator <NUM> may be set close to the position at which the third feed point a3 is connected to the third radiator <NUM>. In this way, high radiation efficiency can be achieved. For example, when the sixth antenna <NUM> is a low-band antenna of a main antenna, and the third antenna <NUM> is a MIMO antenna, because the main antenna requires a large tuning range, and a tuning range of the MIMO antenna is smaller than the tuning range of the main antenna, a distance between points at which the sixth radiator <NUM> is connected to the second tuning contact d2 and the sixth feed point a6 is greater than a distance between points at which the third radiator <NUM> is connected to the first tuning contact d1 and the third feed point a3.

For example, as shown in <FIG>, the third radiator <NUM> is electrically connected to a first tuning circuit 213a through the first tuning contact d1. The sixth radiator <NUM> is electrically connected to a second tuning circuit 216a through the second tuning contact d2. Through the first tuning circuit 213a, the third antenna <NUM> may switch to paths corresponding to different low bands. In this way, a bandwidth of the third antenna <NUM> can cover all of a bandwidth of <NUM> to <NUM>. Through the second tuning circuit 216a, the sixth antenna <NUM> may switch to paths corresponding to different low bands. This ensures that a bandwidth of the sixth antenna <NUM> can cover all of a bandwidth of <NUM> to <NUM>.

In a possible implementation, the first tuning circuit 213a and the second tuning circuit 216a each may include a tuning switch and at least one matching circuit, one end of the matching circuit is connected to the tuning switch, and the other end of the matching circuit is grounded. Specific structures of the tuning switch and the matching circuit are not limited. For example, the tuning switch may be one or more switches. Any switch may be a single-input multiple-output single-pole multi-throw switch, or may be a multiple-input multiple-output multi-pole multi-throw switch. This is not limited in this application. Any switch may be one or more switches connected in series and/or in parallel. This is not limited in this application. The matching circuit may be one capacitor, one inductor, a plurality of capacitors connected in series, a plurality of inductors connected in series, a plurality of capacitors connected in parallel, a plurality of inductors connected in parallel, at least one capacitor and at least one inductor that are connected in series, or at least one group of serially connected capacitors and at least one group of serially connected inductors that are connected in parallel. This is not limited in this application.

For example, as shown in <FIG>, the first tuning circuit 213a includes a first tuning switch <NUM> and four matching circuits: a first matching circuit <NUM>, a second matching circuit <NUM>, a third matching circuit <NUM>, and a fourth matching circuit <NUM>. The first tuning switch <NUM> may be a single-pole four-throw switch (for example, SP4T), and the first tuning switch <NUM> has four switching paths, for example, RF1, RF2, RF3, and RF4. The first matching circuit <NUM>, the second matching circuit <NUM>, the third matching circuit <NUM>, and the fourth matching circuit <NUM> respectively correspond to RF1, RF2, RF3, and RF4. For example, when the mobile phone <NUM> needs to support B8 (GSM <NUM>), B5 (GSM <NUM>), B20 (GSM <NUM>), and B28 (GSM <NUM>), a relationship between switch statuses corresponding to B8, B5, B20, and B28 and the first matching circuit <NUM>, the second matching circuit <NUM>, the third matching circuit <NUM>, and the fourth matching circuit <NUM> is shown in Table <NUM>.

In Table <NUM>, it can be learned that when the mobile phone <NUM> needs to support B8 (GSM <NUM>), the first tuning switch <NUM> is switched to RF4. The fourth matching circuit <NUM> connected on the path RF4 is an inductor of <NUM> nH. A larger inductance of a connected inductor indicates a lower resonance frequency. In Table <NUM>, B28a is a band covered when the first tuning switch <NUM> is switched to RF1 and is connected to a capacitor of <NUM> pF, and B28a is a band covered by the sixth antenna <NUM> after all paths of the first tuning switch <NUM> are disconnected. In this embodiment of this application, the bandwidth of the sixth antenna <NUM> covers the entire bandwidth of the low band of <NUM> to <NUM> by using the foregoing four matching circuits.

Based on the foregoing description, in embodiments of this application, antennas in the following scenario <NUM> and scenario <NUM> are used as examples to perform simulation test.

In this embodiment of this application, the glass layer <NUM> of the display <NUM> curls by <NUM>°, the display layer <NUM> curls by <NUM>°, and the screen-to-body ratio reaches <NUM>%. Clearances of the antennas: the fourth antenna <NUM>, the fifth antenna <NUM>, and the sixth antenna <NUM> at the bottom of the mobile phone <NUM> are less than or equal to <NUM>. A total length of the bottom frame <NUM> of the mobile phone <NUM> is <NUM>, widths of the gap c and the gap d are <NUM>, a length of the sixth radiator <NUM> is <NUM>, lengths of the fourth radiator <NUM> and the fifth radiator <NUM> are <NUM>, and lengths of the fourth extension stub 23a and the fifth extension stub 23b are <NUM>. Therefore, antenna radiation lengths of the fifth antenna <NUM> and the fourth antenna <NUM> are <NUM>. The sixth ground point c6 of the sixth antenna <NUM> is disposed close to the fourth radiator <NUM>.

In this embodiment of this application, the sixth antenna <NUM> is disposed as a low-band antenna. The sixth antenna <NUM> is connected to a tuning circuit and has a frequency tuning function. A bandwidth of approximately <NUM> needs to be covered in each tuning state. When the parameters in Table <NUM> are used for tuning, efficiency of the sixth antenna <NUM> in different tuning states is shown in <FIG> shows antenna simulation efficiency of the sixth antenna <NUM> in different tuning states. It can be learned from <FIG> that average efficiency of the sixth antenna <NUM> in each of B28a, B28b, B20, B5, and B8 is higher than -<NUM> dB. Average efficiency of an existing low-band antenna is -<NUM> dB. Therefore, in this embodiment of this application, the average efficiency of the sixth antenna <NUM> in different tuning states is higher than the average efficiency of the existing low-band antenna by <NUM> dB.

For example, the fourth antenna <NUM> is disposed as a high-band antenna, and the fifth antenna <NUM> is disposed as a medium- and high-band antenna. <FIG> shows radiation efficiency of the fourth antenna <NUM> and the fifth antenna <NUM> in different tuning states of the sixth antenna <NUM>. It can be learned from <FIG> that in different tuning states of the sixth antenna <NUM>, the radiation efficiency of the fourth antenna <NUM> may be available to cover <NUM> to <NUM>. Average efficiency of the fourth antenna <NUM> is -<NUM> dB in the band of <NUM> to <NUM>.

It can be further learned from <FIG> that, in each tuning state of the sixth antenna <NUM>, performance of the fourth antenna <NUM> is relatively stable. A reason is that the sixth ground point c6 of the sixth antenna <NUM> is close to the fourth antenna <NUM>. In this way, the sixth antenna <NUM> does not affect the performance of the fourth antenna <NUM> during tuning. This ensures that the performance of the fourth antenna <NUM> is relatively stable in different tuning states of the sixth antenna <NUM>.

In <FIG>, in different tuning states of the sixth antenna <NUM>, the radiation efficiency of the fifth antenna <NUM> may be available to cover <NUM> to <NUM>. When the sixth antenna <NUM> is in the B28 (<NUM> to <NUM>) tuning state, efficiency of the fifth antenna <NUM> decreases near B12 (<NUM>). A reason is that the ground point of the sixth antenna <NUM> is far away from the fifth antenna <NUM>, and stability of the fifth antenna <NUM> is affected during tuning of the sixth antenna <NUM>. However, the fifth antenna <NUM> is in the band of <NUM> to <NUM>, and average efficiency of the fifth antenna <NUM> at B3 (<NUM>), B1 (<NUM>), and B7 (<NUM>) is still higher than -<NUM> dB after switch and component losses are considered. Therefore, in this embodiment of this application, when the fourth antenna <NUM> is a high-band antenna, and the fifth antenna <NUM> is a medium- and high-band antenna, the fourth antenna <NUM> and the fifth antenna <NUM> still have good bandwidths and radiation efficiency with respect to a relatively small clearance and blocking by the curly part of the display layer <NUM>.

For example, the fourth antenna <NUM> is disposed as a medium- and high-band antenna. For example, the fourth antenna <NUM> is disposed as a medium- and high-band MIMO antenna. <FIG> shows radiation efficiency of the fourth antenna <NUM> disposed as a medium- and high-band MIMO antenna. It can be learned from <FIG> that the radiation efficiency of the fourth antenna <NUM> may be available to cover a band of <NUM> to <NUM>. When the fourth antenna <NUM> is disposed as a medium- and high-band MIMO antenna, a bandwidth of the fourth antenna <NUM> is extended. Therefore, average radiation efficiency of the fourth antenna <NUM> is lower than average radiation efficiency of the medium- and high-band antenna in <FIG>. It can be learned from <FIG> that, in different tuning states of the sixth antenna <NUM>, average efficiency of the fourth antenna <NUM> in a receive (Rx) band of B3 (<NUM>) is higher than -<NUM> dB, average efficiency of the fourth antenna <NUM> in an Rx band of B1 (<NUM>) is -<NUM> dB, and average efficiency of the fourth antenna <NUM> in an Rx band of B7 (<NUM>) is -<NUM> dB. Therefore, when the fourth antenna <NUM> is disposed as a medium- and high-band MIMO antenna, radiation efficiency of the medium- and high-band MIMO antenna decreases by approximately <NUM> dB compared with radiation efficiency of the fourth antenna <NUM> disposed as the high-band antenna in <FIG> and radiation efficiency of the medium- and high-band antenna in <FIG>. However, for the MIMO antenna, the decrease of <NUM> dB in the radiation efficiency does not affect normal operation of the antenna. Therefore, in this embodiment of this application, radiation efficiency of the fifth antenna <NUM> disposed as a medium- and high-band antenna is higher than radiation efficiency of the fourth antenna <NUM> disposed as a medium- and high-band antenna. Therefore, the fifth antenna <NUM> may be a main antenna and cover medium and high bands of the main antenna, and the fourth antenna <NUM> may be a medium- and high-band MIMO antenna because radiation efficiency of the MIMO antenna may be <NUM> dB lower than radiation efficiency of the main antenna.

<FIG> shows initial resonances of the fourth antenna <NUM> and the fifth antenna <NUM> disposed as medium- and high-band antennas and the sixth antenna <NUM> disposed as a low-band antenna. As shown in <FIG>, S3,<NUM> is a return loss curve of the sixth antenna <NUM>, S1,<NUM> is a return loss curve of the fourth antenna <NUM>, and S2,<NUM> is a return loss curve of the fifth antenna <NUM>. It can be learned from <FIG> that when the sixth antenna <NUM> is a low-band antenna, a resonance is at <NUM>, and when the fourth antenna <NUM> is a medium- and high-band antenna, a resonance is at <NUM>. When the fifth antenna <NUM> is a medium- and high-band antenna, there are two resonances, which are respectively at <NUM> and <NUM>.

Generally, the low-band antenna needs a length of approximately <NUM> to generate a <NUM> low-frequency resonance. However, in this embodiment of this application, the length of the sixth radiator <NUM> of the sixth antenna <NUM> is <NUM>, but a <NUM> resonance is excited. Therefore, it can be learned that in addition to the sixth radiator <NUM>, another radiator is further used for the sixth antenna <NUM>. <FIG> shows current distribution during low-frequency resonance (<NUM>) of the sixth antenna <NUM>. It can be learned from <FIG> that the fifth radiator <NUM>, the fifth extension stub 23b, and the sixth radiator <NUM> form an in-phase current (<NUM>/<NUM> wavelength). Therefore, the <NUM> gap c between the fifth radiator <NUM> and the sixth radiator <NUM> does not block distribution of the in-phase current. In this way, during radiation of the sixth antenna <NUM>, the sixth antenna <NUM> uses a radiating element of the fifth antenna <NUM>. The sixth radiator <NUM>, the fifth radiator <NUM>, and the fifth extension stub 23b are used together, so that the sixth antenna <NUM> excites a <NUM> resonance in a length of <NUM>. Therefore, in this embodiment of this application, a length of the low-band antenna is shortened compared with that in the conventional technology.

<FIG> shows current distribution on the middle frame <NUM>, a left curly part of the display layer <NUM> of the display <NUM>, and a frame (for example, the top frame <NUM>, the bottom frame <NUM>, and each extension stub) during low-frequency resonance (<NUM>) of the sixth antenna <NUM>. It can be learned from <FIG> that current distribution on a curly side of the display layer <NUM> and the frame is in-phase, to form ring-shaped current distribution. For a low-band antenna, main radiation is floor radiation (that is, radiation by a metal plate through which the low-band antenna is grounded). Therefore, this type of current distribution facilitates radiation of the low-band antenna.

<FIG> shows initial radiation efficiency of the fourth antenna <NUM> disposed as a medium- and high-band antenna and efficiency of the fourth antenna <NUM> disposed as a Wi-Fi antenna and a GPS antenna. As shown in <FIG>, although a resonance of the fourth antenna <NUM> is at <NUM>, initial radiation efficiency of the fourth antenna <NUM> reaches -<NUM> dB at <NUM>. Therefore, the fourth antenna <NUM> has a good bandwidth characteristic. In a band of <NUM> to <NUM>, efficiency is higher than -<NUM> dB. Therefore, different matching circuits are used, and the fourth antenna <NUM> may be disposed as a medium- and high-band antenna, or may be disposed as a GPS antenna and a Wi-Fi antenna. The fourth antenna <NUM> is not a common inverted F antenna (Invert F Antenna, IFA). Because of an antenna length of <NUM>, in a GPS band (<NUM> to <NUM>), there is no initial radiation efficiency higher than -<NUM> dB.

<FIG> shows current distribution during resonance of the fourth antenna <NUM>. As shown in <FIG>, the fourth antenna <NUM> forms half-wavelength current distribution on the bottom frame <NUM> of the mobile phone <NUM>. This indicates that radiation of the fourth antenna <NUM> is from the sixth radiator <NUM> and a radiating element of the fourth antenna <NUM>. Main radiation is from the sixth radiator <NUM>. Therefore, in this embodiment of this application, the fourth antenna <NUM> uses a radiating element of the sixth antenna <NUM>. Thus, even if the fourth extension stub 23a in the fourth antenna <NUM> is blocked by the curly part of the display layer <NUM>, radiation efficiency of the fourth antenna <NUM> is relatively high. The fourth extension stub 23a and the fourth radiator <NUM> are not main radiating elements of the fourth antenna <NUM>, currents on the fourth extension stub 23a and the fourth radiator <NUM> cross the gap d, and the radiating element of the sixth antenna <NUM> is used for radiation. Therefore, in this embodiment of this application, it is ensured that the fourth antenna <NUM> has a good bandwidth and good radiation efficiency.

<FIG> shows current distribution during resonance of the fifth antenna <NUM>. As shown in <FIG>, the fifth antenna <NUM> forms a <NUM>/4λ current mode on the sixth radiator <NUM>. This indicates that the fifth antenna <NUM> uses the sixth radiator <NUM>. The fifth extension stub 23b connected to the fifth feed point a5 and the fifth radiator <NUM> that are in the fifth antenna <NUM> are not main radiating elements of the fifth antenna <NUM>, a main radiating element of the fifth antenna <NUM> is the sixth radiator <NUM>, the fifth antenna <NUM> reuses a stub of the sixth antenna <NUM> for radiation.

Therefore, in this embodiment of this application, the fourth antenna <NUM> and the fifth antenna <NUM> use the radiation stub of the sixth antenna <NUM>. This overcomes a problem that antenna efficiency is reduced because the curly part blocks the antenna when the display <NUM> curls. The sixth antenna <NUM> uses the radiation stub of the fifth antenna <NUM>, so that the length of the sixth antenna <NUM> is reduced.

<FIG> shows efficiency and isolation curves existing when the fourth antenna <NUM> and the fifth antenna <NUM> are disposed as two medium- and high-band antennas and the sixth antenna <NUM> is disposed as a low-band antenna. In <FIG>, S3,<NUM> is a return loss curve obtained after a matching circuit is added to the sixth antenna <NUM>, S2,<NUM> is a return loss curve obtained after a matching circuit is added to the fifth antenna <NUM>, S1,<NUM> is a return loss curve obtained after a matching circuit is added to the fourth antenna <NUM>, and S1,<NUM> is an isolation curve of the fifth antenna <NUM> and the fourth antenna <NUM>. As shown in <FIG>, when both the fourth antenna <NUM> and the fifth antenna <NUM> are medium- and high-band antennas, worst isolation between the fourth antenna <NUM> and the fifth antenna <NUM> is at <NUM>, and an isolation degree is -<NUM> dB. In another band, an isolation degree between the fourth antenna <NUM> and the fifth antenna <NUM> is less than -<NUM> dB. However, in the conventional technology, when a decoupling structure is not used for two medium- and high-band antennas, an isolation degree is only -<NUM> dB. Therefore, in this embodiment of this application, when the fourth antenna <NUM> and the fifth antenna <NUM> are intra-frequency medium- and high-band antennas, there is good isolation between the two antennas.

In a possible implementation, in this embodiment of this application, the mobile phone <NUM> may further include at least one high-band antenna. For example, as shown in <FIG> and <FIG>, there are two high-band antennas: a seventh antenna <NUM> and an eighth antenna <NUM>. For example, the mobile phone <NUM> may further include the seventh antenna <NUM> and the eighth antenna <NUM>. The seventh antenna <NUM> may include a seventh radiator <NUM>, a seventh feed point a7, a seventh feed b7, and a seventh ground point c7. The seventh radiator <NUM> is electrically connected to the seventh feed point a7 and the seventh ground point c7, and the seventh feed b7 feeds a high-frequency current into the seventh radiator <NUM> through the seventh feed point a7. As shown in <FIG>, the seventh radiator <NUM> may be disposed along an inner side of the first extension stub 21a (that is, a surface that is of the first extension stub 21a and that faces the second extension stub 21b). A minimum distance between the seventh radiator <NUM> and the first extension stub 21a is greater than or equal to <NUM>. This ensures that a clearance of the seventh radiator <NUM> is greater than or equal to <NUM>.

For example, the eighth antenna <NUM> may include an eighth radiator <NUM>, an eighth feed point a8, an eighth feed b8, and an eighth ground point c8. The eighth radiator <NUM> is electrically connected to the eighth feed point a8 and the eighth ground point c8, and the eighth feed b8 feeds a high-frequency current into the eighth radiator <NUM> through the eighth feed point a8. As shown in <FIG>, the eighth radiator <NUM> may be disposed along an inner side of the second extension stub 21b (that is, a surface that is of the second extension stub 21b and that faces the first extension stub 21a). A minimum distance between the eighth radiator <NUM> and the second extension stub 21b is greater than or equal to <NUM>. This ensures that a clearance of the eighth radiator <NUM> is greater than or equal to <NUM>.

In this embodiment of this application, the seventh antenna <NUM> and the eighth antenna <NUM> have corresponding feed points. In this way, the antennas at the top of the mobile phone <NUM> have at least five independent feeding ports, so that antenna modes are richer, and antenna setting is more flexible.

In this embodiment of this application, the seventh antenna <NUM> and the eighth antenna <NUM> may be Wi-Fi <NUM> antennas. An operating band of the Wi-Fi <NUM> antenna may be <NUM> to <NUM>. Alternatively, the seventh antenna <NUM> and the eighth antenna <NUM> may be antennas covering <NUM> bands. For example, operating bands of the seventh antenna <NUM> and the eighth antenna <NUM> may be <NUM> to <NUM> and <NUM> to <NUM>. It should be noted that the operating bands of the seventh antenna <NUM> and the eighth antenna <NUM> include but are not limited to a band above or below <NUM> in a <NUM> band.

<FIG> shows radiation efficiency existing when the seventh antenna <NUM> is a Wi-Fi <NUM> antenna. As shown in <FIG>, average efficiency in an entire band is higher than -<NUM> dB. Therefore, when the seventh antenna <NUM> is located inside the mobile phone <NUM>, the seventh antenna <NUM> has good radiation efficiency.

In this embodiment of this application, the operating bands of the seventh antenna <NUM> and the eighth antenna <NUM> are relatively high. Therefore, the two antennas do not disturb the three existing antennas. In this way, the seventh antenna <NUM> and the eighth antenna <NUM> are antennas suitable for a <NUM> system (<NUM> to <NUM>).

It should be noted that, in this embodiment, positions at which the seventh antenna <NUM> and the eighth antenna <NUM> are disposed include but are not limited to the inner sides of the first extension stub 21a and the second extension stub 21b. For example, the seventh antenna <NUM> and the eighth antenna <NUM> may alternatively be disposed along the fourth extension stub 23a and the fifth extension stub 23b. Alternatively, the seventh antenna <NUM>, the eighth antenna <NUM>, a ninth antenna (not shown), and a tenth antenna (not shown) may be disposed respectively along inner sides of the first extension stub 21a, the second extension stub 21b, the fourth extension stub 23a, and the fifth extension stub 23b. The ninth antenna and the tenth antenna each have a corresponding feed point. In this way, the antennas at the top of the mobile phone <NUM> have five independent feeding ports, the antennas at the bottom of the mobile phone <NUM> have five independent feeding ports, and <NUM> antennas may be disposed in the mobile phone <NUM>. It should be noted that, in this embodiment, a quantity of feeding ports of the antennas in the mobile phone <NUM> includes but is not limited to <NUM>.

In this embodiment of this application, the seventh feed point a7 of the seventh antenna <NUM> and the eighth feed point a8 of the eighth antenna <NUM> may be located on the circuit board <NUM>, and the seventh ground point c7 and the eighth ground point c8 may be connected to the ground point of the circuit board <NUM>, or connected to the metal middle plate <NUM> to implement grounding. The seventh antenna <NUM> and the eighth antenna <NUM> may be suspended inside the mobile phone <NUM>, or the seventh antenna <NUM> and the eighth antenna <NUM> may be located on the circuit board <NUM>, or the seventh antenna <NUM> and the eighth antenna <NUM> may be suspended on the metal middle plate <NUM>.

In descriptions of embodiments of this application, it should be noted that, unless otherwise clearly specified and limited, terms "mount", "connected", and "connection" should be understood in a broad sense. For example, the terms may be used for a fixed connection, an indirect connection through an intermediate medium, an internal connection between two elements, or an interaction relationship between two elements. For a person of ordinary skill in the art, specific meanings of the foregoing terms in embodiments of this application may be understood based on a specific situation.

In embodiments of this application or by implication, the referred apparatus or component needs to have a specific azimuth, be constructed and operated in a specific azimuth, and therefore cannot be understood as a limitation to embodiments of this application. In the descriptions of embodiments of this application, the meaning of "a plurality of" is two or more, unless otherwise precisely and specifically specified.

In the specification, claims, and accompanying drawings of embodiments of this application, the terms "first", "second", "third", "fourth", and the like (if existent) are intended to distinguish between similar objects but do not necessarily indicate a specific order or sequence. It should be understood that the data used in such a way is interchangeable in proper circumstances so that embodiments of this application described herein can be implemented in an order other than the order illustrated or described herein. In addition, the terms "include", "have", and any variants thereof are intended to cover the non-exclusive inclusion, for example, a process, method, system, product, or device that includes a list of steps or units is not necessarily limited to those expressly listed steps or units, but may include other steps or units not expressly listed or inherent to such a process, method, product, or device.

Claim 1:
An electronic device with a rollable display, comprising at least the rollable display (<NUM>), a rear cover (<NUM>), a middle frame (<NUM>) located between the rollable display and the rear cover, and an antenna assembly, ;
wherein the middle frame comprises a metal middle plate (<NUM>) and a top metal frame (<NUM>) and a bottom metal frame (<NUM>) that are located at two ends of the metal middle plate, the metal middle plate is located in space enclosed by the rollable display and the rear cover, and the top metal frame and the bottom metal frame are respectively located at the top and the bottom of the rollable display and the rear cover;
wherein the rollable display has curly parts (<NUM>, <NUM>) curling toward the rear cover, and a first extension stub (21a) and a second extension stub (21b), in the antenna assembly extend into the space enclosed by the rollable display and the rear cover;
wherein the antenna assembly comprises a first antenna (<NUM>), and the first antenna comprises a first radiator (<NUM>), the first extension stub, and a first feed point (a1) and a first ground point (c1) that are electrically connected to the first extension stub; and
one end of the first extension stub is connected to the first radiator, the other end of the first extension stub extends into the electronic device, and the first radiator is a part of the top metal frame or a part of the bottom metal frame of the electronic device.