CN216389740U - Mobile terminal - Google Patents

Abstract

The application provides a mobile terminal, including metal backshell and control mainboard, the back of metal backshell is equipped with a slot antenna at least, and the slot antenna runs through the metal backshell, is equipped with the feed portion that corresponds the setting with the slot antenna on the metal backshell, and control mainboard and feed portion electric connection realize the feed to the slot antenna. The slot antenna and the metal rear shell of the mobile terminal are integrally designed, and manufacturing and assembling costs are low.

Description

Mobile terminal

Technical Field

The application relates to the technical field of display equipment, in particular to a mobile terminal.

Background

An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space) or vice versa. In order to enable the antenna to be used normally for a long time, an antenna module of the antenna needs to be installed in the electronic equipment, and a cable is led out from the inside to be connected with the outside.

With the wide application of the fifth generation mobile communication technology (5G technology), the fifth generation mobile communication products bring high speed and large flow, and increase the number of antennas of the mobile terminal. The first generation mobile communication product to the third generation mobile communication product only need to be configured with one antenna, the fourth generation mobile communication product needs to be configured with two antennas, and the fifth generation mobile communication product needs to be configured with at least four antennas, and some electronic devices also need to be configured with a WiFi antenna, a GPS antenna, a Bluetooth antenna and the like, so that the number of the antennas is greatly increased.

In the course of conceiving and implementing the present application, the inventors found that at least the following problems existed: a plurality of antennas are randomly placed, and the occupied space is large, so that the final communication equipment is overlarge in size; and the available space around the communication equipment is gradually compressed, and the performance of the antenna is difficult to ensure under the condition of small clearance.

The foregoing description is provided for general background information and is not admitted to be prior art.

Disclosure of Invention

To the technical problem, the application provides a mobile terminal, slot antenna and metal backshell integrated design, and manufacturing and assembly cost are low.

In order to solve the technical problem, the application provides a mobile terminal, including metal backshell and control mainboard, the back of metal backshell is equipped with a slot antenna at least, and the slot antenna runs through the metal backshell, is equipped with the feed portion that corresponds the setting with the slot antenna on the metal backshell, and control mainboard and feed portion electric connection realize the feed to the slot antenna.

Optionally, the slot antenna includes a first slot, and a second slot and a third slot that are communicated with the first slot, the second slot is parallel to and disposed opposite to the third slot, and a length direction of the second slot and a length direction of the third slot are perpendicular to a length direction of the first slot.

Optionally, the length of the first slit is greater than the length of the second slit, and the length of the second slit is greater than the length of the third slit.

Optionally, the first slot includes a first end and a second end that are disposed opposite to each other, the feeding portion is disposed near the first end, the second slot is communicated with the second end, and the first slot, the second slot, and the third slot are combined to form an "F" shape.

Optionally, two slot antennas are arranged on the back surface of the metal rear shell, the two slot antennas are respectively a first slot antenna and a second slot antenna, the first slot antenna and the second slot antenna are arranged at an interval, and the slot opening state of the second slot antenna is obtained by rotating the first slot antenna clockwise by 90 degrees and then mirroring the first slot antenna.

Optionally, the back surface of the metal rear shell is provided with four slot antennas which are arranged in a rectangular shape, the four slot antennas are respectively a first slot antenna, a second slot antenna, a third slot antenna and a fourth slot antenna, the first slot antenna and the second slot antenna are adjacently arranged from left to right, the first slot antenna and the fourth slot antenna are adjacently arranged from top to bottom, the slot opening state of the second slot antenna is obtained by mirroring in the horizontal direction after the first slot antenna rotates clockwise by 90 degrees, the slot opening state of the third slot antenna is obtained by mirroring in the vertical direction after the second slot antenna rotates clockwise by 90 degrees, and the slot opening state of the fourth slot antenna is obtained by mirroring in the horizontal direction after the third slot antenna rotates clockwise by 90 degrees.

Optionally, the distance between two adjacent slot antennas is 8mm to 12 mm.

Optionally, the length of the first gap is 15mm to 20 mm; the length of the second gap is 5 mm-10 mm; the widths of the first gap, the second gap and the third gap are all 1-2 mm.

Optionally, an elastic member corresponding to the feeding portion is disposed on the control main board, one end of the elastic member is electrically connected to the control main board, and the other end of the elastic member abuts against the feeding portion.

Optionally, the control main board is further electrically connected with a microstrip line and a signal chip, one end of the microstrip line is electrically connected with the elastic element, the other end of the microstrip line is electrically connected with the signal chip, and the microstrip line vertically crosses the first gap.

Optionally, the mobile terminal further includes a frame and a display device, the frame is connected to the metal rear shell, an accommodating cavity is formed between the frame and the metal rear shell, the display device and the control main board are disposed in the accommodating cavity, and the control main board is located between the display device and the metal rear shell.

Optionally, a sealing block or a sealing film for sealing the slot antenna is arranged on the metal rear shell, the sealing block is arranged in the slot antenna, or the sealing film covers the slot antenna.

The utility model provides a mobile terminal's the back space that utilizes the metal backshell, with slot antenna and metal backshell integrated design, practiced thrift the manufacturing and the equipment cost of antenna, broken the restriction that conventional antenna arranged around the screen or on the frame simultaneously, can not receive the influence that the performance worsens that the screen duty cycle increased and bring, can also fill the communication operation requirement simultaneously.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic hardware structure diagram of a mobile terminal implementing various embodiments of the present application;

fig. 2 is a rear view schematic diagram of a mobile terminal according to a first embodiment of the present application;

fig. 3 is a schematic partial cross-sectional structure diagram of a mobile terminal according to a first embodiment of the present application;

fig. 4 is a rear view structural diagram of a mobile terminal according to a second embodiment of the present application;

fig. 5 is a graph of the reflection coefficient after testing the first and fourth slot antennas of the present application;

fig. 6 is a graph of transmission coefficients after testing the first slot antenna and the fourth slot antenna of the present application;

fig. 7 is a graph of transmission coefficients after testing the first and third slot antennas of the present application;

fig. 8 is a rear view schematic diagram of a mobile terminal according to a third embodiment of the present application;

fig. 9 is a schematic rear view of a mobile terminal according to a fourth embodiment of the present application;

fig. 10 is a rear view structural diagram of a mobile terminal according to a fifth embodiment of the present application.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings. With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the recitation of an element by the phrase "comprising an … …" does not exclude the presence of additional like elements in the process, method, article, or apparatus that comprises the element, and further, where similarly-named elements, features, or elements in different embodiments of the disclosure may have the same meaning, or may have different meanings, that particular meaning should be determined by their interpretation in the embodiment or further by context with the embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or," "and/or," "including at least one of the following," and the like, as used herein, are to be construed as inclusive or mean any one or any combination. For example, "includes at least one of: A. b, C "means" any of the following: a; b; c; a and B; a and C; b and C; a and B and C ", again for example," A, B or C "or" A, B and/or C "means" any of the following: a; b; c; a and B; a and C; b and C; a and B and C'. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning in themselves. Thus, "module", "component" or "unit" may be used mixedly.

The mobile terminal may be implemented in various forms. For example, the mobile terminal described in the present application may include mobile terminals such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and fixed terminals such as a Digital TV, a desktop computer, and the like.

The following description will be given taking a mobile terminal as an example, and it will be understood by those skilled in the art that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present application, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex-Long Term Evolution), TDD-LTE (Time Division duplex-Long Term Evolution, Time Division Long Term Evolution), 5G, and so on.

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor that may adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 1061 and/or the backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Alternatively, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Optionally, the touch detection device detects a touch orientation of a user, detects a signal caused by a touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited thereto.

Alternatively, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a program storage area and a data storage area, and optionally, the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, and the like) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor, optionally, the application processor mainly handles operating systems, user interfaces, application programs, etc., and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

First embodiment

Fig. 2 is a schematic rear view structure diagram of a mobile terminal according to a first embodiment of the present application, and fig. 3 is a schematic partial cross-sectional structure diagram of the mobile terminal according to the first embodiment of the present application, as shown in fig. 2 and fig. 3, the mobile terminal includes a metal rear shell 10 and a control main board 20, at least one slot antenna 12 is disposed on the metal rear shell 10, the slot antenna 12 penetrates through the metal rear shell 10, a feeding portion 13 corresponding to the slot antenna 12 is disposed on the metal rear shell 10, the control main board 20 is disposed on the metal rear shell 10, and the control main board 20 is electrically connected with the feeding portion 13 to realize feeding of the slot antenna 12. In the embodiment, the slot antenna 12 is a wireless device that transmits and receives electromagnetic waves when the mobile terminal communicates with a base station, and when the mobile terminal transmits, the slot antenna 12 is used to convert an electrical signal into an electromagnetic wave to be radiated, and simultaneously convert the received electromagnetic wave into an electrical signal in time to be transmitted to the control main board 20 inside the mobile terminal.

The mobile terminal utilizes the back space of the metal rear shell 10, integrally designs the slot antenna 12 and the metal rear shell 10, saves the manufacturing and assembling cost of the antenna, breaks the limit of the conventional antenna on the periphery of the screen or the frame 30, cannot be affected by the performance deterioration caused by the increase of the duty ratio of the screen, and can meet the use requirement of communication.

Optionally, the control motherboard 20 is a circuit board assembly (PCBA), on which a plurality of electronic components, such as a plurality of chips or radio frequency chips for controlling the display of the mobile terminal, are electrically connected.

Optionally, the metal back case 10 is made of aluminum alloy, copper material, or steel material, but not limited thereto.

Alternatively, the number of the feeding portions 13 coincides with the number of the slot antennas 12.

Alternatively, the power feeding portion 13 has good conductivity, and a part of the metal rear case 10 is, for example, plated or processed to form the power feeding portion 13.

Optionally, the slot antenna 12 includes a first slot 121, and a second slot 122 and a third slot 123 that are communicated with the first slot 121, the second slot 122 and the third slot 123 are parallel and are disposed opposite to each other, and the length directions of the second slot 122 and the third slot 123 are perpendicular to the length direction of the first slot 121. In the present embodiment, the second slot 122 and the third slot 123 are located on the same side of the first slot 121, and the feeding portion 13 is located on the other side of the first slot 121 away from the second slot 122 and the third slot 123.

Optionally, the length L1 of the first slit 121 is greater than the length L2 of the second slit 122, and the length L2 of the second slit 122 is greater than the length of the third slit 123. In the present embodiment, the length L1 of the first slit 121 is 15mm to 20mm, for example, 17mm, 18 mm; the length L2 of the second slit 122 is 5mm to 10mm, for example, 7mm, 8 mm; the slit widths W of the first slit 121, the second slit 122, and the third slit 123 are all 1mm to 2mm, for example, 1.4mm and 1.8 mm.

Optionally, the first slot 121 includes a first end 121a and a second end 121b that are oppositely disposed, the feeding portion 13 is disposed near the first end 121a, the second slot 122 is communicated with the second end 121b, and the first slot 121, the second slot 122, and the third slot 123 are combined to form an "F" shape. In the embodiment, the vertical distance between the feeding portion 13 and the second slot 122 is greater than the vertical distance between the feeding portion 13 and the third slot 123, wherein the feeding portion 13 to the third slot 123 can excite N79 with a bandwidth of 4.4GHz to 5GHz to operate, and the feeding portion 13 to the third slot 123 can excite N77 with a bandwidth of 3.3GHz to 4.2GHz to operate.

Optionally, two slot antennas 12 are disposed on the back surface of the metal rear shell 10, the two slot antennas 12 are a first slot antenna 12a and a second slot antenna 12b, respectively, the first slot antenna 12a and the second slot antenna 12b are disposed at an interval, and the slot opening state of the second slot antenna 12b is obtained by rotating the first slot antenna 12a clockwise by 90 ° and mirroring the first slot antenna 12 a. In this embodiment, the slot opening states of the first slot antenna 12a and the second slot antenna 12b are orthogonal mirror images, and the array can optimize the isolation between the antennas with the same frequency, effectively avoid the mutual interference of electromagnetic waves, does not need an additional decoupling structure, and can realize higher isolation.

Optionally, the first slot antenna 12a and the second slot antenna 12b are disposed at intervals along the width direction of the metal back shell 10, and the first slot antenna 12a and the second slot antenna 12b have the same size or slightly different sizes, so as to achieve a desired antenna frequency band.

Optionally, the distance S between two adjacent slot antennas 12 is 8mm to 12mm, for example, 9mm, 10 mm.

Optionally, the control main board 20 is provided with an elastic element 21 corresponding to the feeding portion 13, one end of the elastic element 21 is electrically connected to the control main board 20, and the other end of the elastic element 21 abuts against the feeding portion 13.

Optionally, the control main board 20 may further include metal posts and wires, so as to electrically contact the feeding portion 13, and further excite the current mode of the slot antenna 12, thereby achieving a radiation effect.

Optionally, the control motherboard 20 is further electrically connected with a microstrip line 22 and a signal chip (not shown), one end of the microstrip line 22 is electrically connected with the elastic component 21, the other end of the microstrip line 22 is electrically connected with the signal chip, and the microstrip line 22 vertically crosses the first slot 121, that is, the length direction of the microstrip line 22 is perpendicular to the length direction of the first slot 121. In this embodiment, two microstrip lines 22 and two elastic members 21 are electrically connected to the control motherboard 20, and two feeding portions 13 corresponding to the microstrip lines 22 and the elastic members 21 are disposed on the metal rear case 10, wherein one microstrip line 22 crosses over the first slot 121 of the first slot antenna 12a, and the other microstrip line 22 crosses over the first slot 121 of the second slot antenna 12 b.

Optionally, the microstrip line 22 may be a linear type, or the microstrip line 22 at least includes a first linear segment and a second linear segment, one end of the first linear segment is electrically connected to the elastic element 21, the other end of the first linear segment crosses the first slot 121 and is vertically connected to the second linear segment, and one end of the second linear segment, which is far away from the first linear segment, is connected to the signal chip.

Optionally, as shown in fig. 3, the mobile terminal further includes a bezel 30 and a display device 40, the bezel 30 is connected to the metal rear shell 10, an accommodating cavity is formed between the bezel 30 and the metal rear shell 10, the display device 40 and the control main board 20 are disposed in the accommodating cavity, and the control main board 20 is located between the display device 40 and the metal rear shell 10.

Alternatively, the display device 40 includes a cover plate, a backlight module (not shown), and a display panel (not shown), wherein the cover plate covers the display panel, and the display panel is disposed on the backlight module.

Optionally, a sealing block or a sealing film (plastic) for sealing the slot antenna 12 is disposed on the metal rear case 10, the sealing block is disposed in the slot antenna 12, or the sealing pad covers the slot antenna 12, and the mobile terminal appearance is not affected. In order to avoid frequency offset caused by resonance of the slot antenna 12, the size of the slot antenna 12 or circuit matching debugging can be optimized, and the problem can be effectively avoided.

Second embodiment

Fig. 4 is a schematic rear view of a mobile terminal according to a second embodiment of the present application, and as shown in fig. 4, the mobile terminal according to this embodiment has substantially the same structure as the mobile terminal according to the first embodiment, except that the number of slot antennas 12 is different.

Alternatively, as shown in fig. 4, four slot antennas 12 are arranged in a rectangular shape on the back of the metal rear case 10, the four slot antennas 12 are a first slot antenna 12a and a second slot antenna 12b, the slot opening state of the second slot antenna 12b is obtained by mirroring the first slot antenna 12a in the horizontal direction after rotating the first slot antenna 12a clockwise by 90 degrees, the slot opening state of the third slot antenna 12c is obtained by mirroring the second slot antenna 12b in the vertical direction after rotating the second slot antenna 12b clockwise by 90 degrees, and the slot opening state of the fourth slot antenna 12d is obtained by mirroring the third slot antenna 12c in the horizontal direction after rotating the third slot antenna 12c clockwise by 90 degrees. In this embodiment, the four F-shaped slot antennas 12 can excite 4 MIMO 5G antennas to work simultaneously, and the four F-shaped slot antennas 12 are orthogonal mirror images, so that the array can optimize the isolation between the antennas with the same frequency, effectively avoid electromagnetic interference, and can realize higher isolation without an additional decoupling structure.

Optionally, the first slot antenna 12a and the second slot antenna 12b are disposed adjacent to each other along the width direction of the metal rear case 10, the fourth slot antenna 12d and the third slot antenna 12c are disposed adjacent to each other along the width direction of the metal rear case 10, the first slot antenna 12a and the fourth slot antenna 12d are disposed adjacent to each other along the length direction of the metal rear case 10, and the second slot antenna 12b and the third slot antenna 12c are disposed adjacent to each other along the length direction of the metal rear case 10. The first slot antenna 12a, the second slot antenna 12b, the third slot antenna 12c and the fourth slot antenna 12d are of the same size or slightly different sizes to achieve the desired antenna frequency band.

Optionally, fig. 5 is a reflection coefficient curve graph after testing the first slot antenna and the fourth slot antenna of the present application, fig. 6 is a transmission coefficient curve graph after testing the first slot antenna and the fourth slot antenna of the present application together, fig. 7 is a transmission coefficient curve graph after testing the first slot antenna and the third slot antenna of the present application together, and the present application uses a darkroom to test the efficiency of each slot antenna 12 in the frequency bands of 3.3GHz to 4.2GHz and 4.4GHz to 5GHz, respectively.

As shown in fig. 5, the first slot antenna 12a and the fourth slot antenna 12d both operate at a reflection coefficient of-6 or less in the frequency bands of 3.3GHz to 4.2GHz and 4.4GHz to 5 GHz.

As shown in fig. 6, the first slot antenna 12a and the fourth slot antenna 12d have an isolation of-10 dB or less in the frequency bands of 3.3GHz to 4.2GHz and 4.4GHz to 5 GHz.

As shown in fig. 7, the first slot antenna 12a and the third slot antenna 12c have an isolation of-18 dB or less in the frequency bands of 3.3GHz to 4.2GHz and 4.4GHz to 5 GHz.

Third embodiment

Fig. 8 is a rear view schematic diagram of a mobile terminal according to a third embodiment of the present application, and as shown in fig. 8, the mobile terminal according to this embodiment has substantially the same structure as the mobile terminal according to the second embodiment, and is different in that a local shape of the slot antenna 12 is different.

Alternatively, as shown in fig. 8, the second slit 122 and the third slit 123 are vertically communicated with the first slit 121, and the second slit 122 and the third slit 123 are located in a region between the first end 121a and the second end 121 b.

Fourth embodiment

Fig. 9 is a schematic rear view of a mobile terminal according to a fourth embodiment of the present application, and as shown in fig. 9, the mobile terminal according to this embodiment has substantially the same structure as the mobile terminal according to the second embodiment, but is different in that a local shape of the slot antenna 12 is different.

Optionally, the second slot 122 and the third slot 123 are both vertically communicated with the first slot 121, the second slot 122 and the third slot 123 are respectively located at two sides of the first slot 121, and the second slot 122 or the third slot 123 and the feeding portion 13 are located at the same side of the first slot 121.

Fifth embodiment

Fig. 10 is a schematic rear view of a mobile terminal according to a fifth embodiment of the present application, and as shown in fig. 10, the mobile terminal according to this embodiment has substantially the same structure as the mobile terminal according to the second embodiment, except that the number of slot antennas 12 is different.

Specifically, optionally, as shown in fig. 10, the back surface of the metal rear shell 10 is provided with six slot antennas 12 arranged in a rectangular shape, the six slot antennas 12 are a first slot antenna 12a, a second slot antenna 12b, a third slot antenna 12c, a fourth slot antenna 12d, a fifth slot antenna 12e and a sixth slot antenna 12f, wherein the first slot antenna 12a, the second slot antenna 12b, the third slot antenna 12c, and the fourth slot antenna 12d are arranged in the same manner as in the second embodiment, the fifth slot antenna 12e is disposed adjacent to the third slot antenna 12c, and the slot open state of the fifth slot antenna 12e is the same as that of the second slot antenna 12b, the sixth slot antenna 12f is disposed adjacent to the fourth slot antenna 12d, and the slot open state of the sixth slot antenna 12f is the same as the slot open state of the first slot antenna 12 a.

Sixth embodiment

The mobile terminal of this embodiment has substantially the same structure as the mobile terminal of the above embodiment, and is different in that a transparent antenna (not shown) is disposed on the front surface of the mobile terminal, so that bidirectional radiation on the front surface and the back surface is achieved, the complementary of directional diagrams is achieved, and ideal communication experience is achieved. In the present embodiment, the transparent antenna is made of, for example, Indium Tin Oxide (ITO) material, but not limited thereto.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

In the present application, the same or similar term concepts, technical solutions and/or application scenario descriptions will be generally described only in detail at the first occurrence, and when the description is repeated later, the detailed description will not be repeated in general for brevity, and when understanding the technical solutions and the like of the present application, reference may be made to the related detailed description before the description for the same or similar term concepts, technical solutions and/or application scenario descriptions and the like which are not described in detail later.

In the present application, each embodiment is described with emphasis, and reference may be made to the description of other embodiments for parts that are not described or illustrated in any embodiment.

The technical features of the technical solution of the present application may be arbitrarily combined, and for brevity of description, all possible combinations of the technical features in the embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present application should be considered as being described in the present application.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a controlled terminal, or a network device) to execute the method of each embodiment of the present application.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims (10)

1. The mobile terminal is characterized by comprising a metal rear shell and a control main board, wherein at least one slot antenna is arranged on the back surface of the metal rear shell, the slot antenna penetrates through the metal rear shell, a feeding portion which corresponds to the slot antenna is arranged on the metal rear shell, and the control main board is electrically connected with the feeding portion to feed the slot antenna.

2. The mobile terminal of claim 1, wherein the slot antenna comprises a first slot and a second slot and a third slot communicated with the first slot, the second slot is parallel to and opposite to the third slot, and a length direction of the second slot and the third slot is perpendicular to a length direction of the first slot.

3. The mobile terminal of claim 2, wherein the length of the first slot is greater than the length of the second slot, and the length of the second slot is greater than the length of the third slot.

4. The mobile terminal of claim 2, wherein the first slot includes a first end and a second end disposed opposite to each other, the feed is disposed proximate to the first end, the second slot is in communication with the second end, and the first slot, the second slot, and the third slot are combined into an "F" shape.

5. The mobile terminal according to claim 1, wherein two of the slot antennas are disposed on the back surface of the metal rear shell, the two slot antennas are a first slot antenna and a second slot antenna, the first slot antenna and the second slot antenna are spaced apart from each other, and a slot open state of the second slot antenna is obtained by rotating the first slot antenna 90 ° clockwise and mirroring the first slot antenna.

6. The mobile terminal of claim 5, comprising at least one of:

the distance between two adjacent slot antennas is 8-12 mm;

the length of the first gap is 15-20 mm; the length of the second gap is 5 mm-10 mm; the widths of the first gap, the second gap and the third gap are all 1-2 mm;

the control mainboard is provided with an elastic piece corresponding to the feeding portion, one end of the elastic piece is electrically connected to the control mainboard, and the other end of the elastic piece is abutted against the feeding portion.

7. The mobile terminal according to claim 6, wherein the control motherboard is further electrically connected with a microstrip line and a signal chip, one end of the microstrip line is electrically connected with the elastic element, the other end of the microstrip line is electrically connected with the signal chip, and the microstrip line vertically crosses the first slot.

8. The mobile terminal according to any of claims 1 to 7, wherein the back of the metal rear shell is provided with four slot antennas arranged in a rectangular shape, the four slot antennas being a first slot antenna, a second slot antenna, a third slot antenna and a fourth slot antenna, the first slot antenna and the second slot antenna are arranged adjacently left and right, the first slot antenna and the fourth slot antenna are arranged adjacently up and down, the slot open state of the second slot antenna is obtained by the first slot antenna rotating 90 degrees clockwise and mirroring along the horizontal direction, the slot open state of the third slot antenna is obtained by the second slot antenna rotating 90 degrees clockwise and mirroring in the vertical direction, the slot opening state of the fourth slot antenna is obtained by the third slot antenna rotating 90 degrees clockwise and then mirroring along the horizontal direction.

9. The mobile terminal according to any one of claims 1 to 7, wherein the mobile terminal further comprises a bezel and a display device, the bezel is connected to the metal rear shell, a receiving cavity is formed between the bezel and the metal rear shell, the display device and the control main board are disposed in the receiving cavity, and the control main board is located between the display device and the metal rear shell.

10. The mobile terminal according to any of claims 1 to 7, wherein a sealing block or a sealing film for sealing the slot antenna is provided on the metal rear case, the sealing block is provided in the slot antenna, or the sealing film covers the slot antenna.

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