Mobile terminal

Abstract

Embodiments of the present application provide a mobile terminal, comprising: a rear housing, which has an accommodating space, is provided with a camera decoration member hole, and is made of metal; and an antenna assembly, which comprises an antenna body located in the accommodating space and is electrically connected to the rear housing, wherein the antenna assembly can feed the rear housing by means of the antenna body, such that a current loop is formed along the camera decoration member hole, so as to radiate an antenna signal around the camera decoration member hole. Therefore, the antenna performance requirements can be satisfied, and the integrity and aesthetic appearance of the rear housing are maintained.

Description

mobile terminal

[0001] This application claims priority to Chinese Patent Application No. 202520543896.1, filed on March 25, 2025, entitled "Mobile Terminal", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of mobile terminal technology, and in particular relates to a mobile terminal. Background Technology

[0003] In mobile devices, metal is increasingly being used as the back cover material. Because metal shields antenna signals, to implement antenna solutions on devices with metal back covers, it's often necessary to cut away sections or add slits to the metal back cover to meet antenna performance requirements. However, this compromises the integrity of the back cover, leading to a decrease in aesthetics. Technical issues

[0004] However, this method compromises the integrity of the back cover, resulting in a decrease in aesthetics. Technical solutions

[0005] This application provides a mobile terminal that maintains the integrity and aesthetics of the back cover while meeting antenna performance requirements. This application provides a mobile terminal comprising:

[0006] The rear cover has a receiving space and is provided with a camera decorative part hole; the material of the rear cover is metal.

[0007] An antenna assembly includes an antenna body located in the receiving space and electrically connected to the rear shell;

[0008] The antenna assembly can feed power to the rear shell through the antenna body and form a current loop along the camera decorative hole to radiate antenna signals around the camera decorative hole. Beneficial effects

[0009] In the mobile terminal of this application embodiment, an irregular ground shape is formed through the camera decorative hole, which can give the antenna body a clear height and generate a longer current path. This can meet the antenna performance requirements and eliminate the need for gaps or other drilling in the back cover, thus maintaining the integrity and aesthetics of the back cover. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0012] Figure 1 is a structural schematic diagram of a mobile terminal provided in an embodiment of this application.

[0013] Figure 2 is an enlarged structural diagram of part A of the mobile terminal shown in Figure 1.

[0014] Figure 3 is another structural schematic diagram of the mobile terminal provided in the embodiment of this application.

[0015] Figure 4 is a schematic diagram of the cross-sectional structure of the mobile terminal shown in Figure 3 along BB.

[0016] Figure 5 is a schematic diagram of the exploded structure of the mobile terminal provided in the embodiment of this application.

[0017] Figure 6 is a schematic diagram of a partial shadow structure of a mobile terminal provided in an embodiment of this application.

[0018] Figure 7 is a graph showing the S11 parameters and antenna efficiency provided in the embodiments of this application.

[0019] Figure 8 is a 3D simulation diagram of the 2.46GHz frequency under the mobile terminal structure shown in Figure 1.

[0020] Figure 9 is a 3D simulation diagram of the 5.56GHz frequency under the mobile terminal structure shown in Figure 1.

[0021] Implementation methods of this application

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] Due to the unique luster and texture of metal, an increasing number of smart terminal products are using metal as the back cover material. Metal has a shielding effect on antenna signals. In all-metal back cover devices, to implement antenna solutions, it is usually necessary to cut off sections or add slits to the metal back cover to meet antenna performance requirements. However, this method compromises the integrity of the back cover, resulting in a decrease in aesthetics.

[0024] To reduce the occurrence of the above-mentioned problems, this application provides a mobile terminal, which will be described below with reference to the accompanying drawings. Please refer to Figure 1, which is a structural schematic diagram of a mobile terminal provided in this application embodiment. For example, the mobile terminal 100 can be a mobile phone, tablet computer, laptop computer, in-vehicle smart terminal, and wearable device, etc. The mobile terminal 100 includes a back cover 110 and an antenna assembly 120.

[0025] The rear cover 110 has a receiving space 112 and a camera decorative part hole 114. The receiving space 112 is used to accommodate components of the mobile terminal 100, such as a display screen, circuit board, and camera. The camera decorative part hole 114 is used to expose the camera in the camera module and to fix and encapsulate the camera module through the camera decorative part. The camera decorative part hole 114 communicates with the receiving space 112, or in other words, the camera decorative part hole 114 can be understood as an opening of the receiving space 112.

[0026] The back cover 110 is made of metal, such as aluminum alloy. Taking the mobile terminal 100 as a tablet computer as an example, the length and width of the back cover 110 can be 277 mm and 156 mm, respectively.

[0027] The antenna assembly 120 includes an antenna body 122, which is located in the housing space 112 and is electrically connected to the rear cover 110.

[0028] The antenna assembly 120 can feed power to the rear shell 110 through the antenna body 122 and form a current loop along the camera decorative hole 114 to radiate antenna signals around the camera decorative hole 114.

[0029] By forming an irregular ground shape through the camera decorative hole 114, the antenna body 122 can have a clear height and generate a longer current path. This not only meets the antenna performance requirements, but also eliminates the need for seams or other drilling on the back cover 110, thus maintaining the integrity and aesthetics of the back cover 110.

[0030] For example, the antenna body 122 includes a frame 130 for housing the display screen of the mobile terminal 100. Reusing the frame 130 as the antenna body 122 can save on component placement. For example, the frame 130 can be made of stainless steel.

[0031] It should be noted that the screen frame 130 can be a complete thin plate. The screen frame 130 can be fixed to the rear shell 110, and the screen frame 130 can be isolated from the rear shell 110 through a connector to reduce interference between the two and the impact on the antenna signal. Please refer to Figure 1 and Figures 2 to 4. Figure 2 is an enlarged structural schematic diagram of part A of the mobile terminal shown in Figure 1. Figure 3 is another structural schematic diagram of the mobile terminal provided in this application embodiment. Figure 4 is a cross-sectional structural schematic diagram of the mobile terminal shown in Figure 3 along BB. For example, the antenna assembly 120 also includes a circuit board 124. The circuit board 124 is disposed between the screen frame 130 and the rear shell 110 and abuts against the rear shell 110. The circuit board 124 is electrically connected to the screen frame 130 and the rear shell 110. The circuit board 124 may have exposed copper abutting against the rear shell 110 for electrical connection with the rear shell 110, and it can be understood that the circuit board 124 is grounded through the rear shell 110.

[0032] The circuit board 124 has a power supply or power point, which is located on the side of the circuit board 124 away from the rear cover 110. The circuit board 124 also has a matching circuit connected to the power supply. The matching circuit can be electrically connected to the motherboard of the mobile terminal 100. The matching circuit can output the processed signal through the power supply to control the radiation parameters of the antenna, such as the radiation frequency.

[0033] For example, the antenna assembly 120 also includes a feed element 126, with its two ends abutting against the circuit board 124 and the screen frame 130, respectively. The feed element 126 is electrically connected to both the circuit board 124 and the screen frame 130. It can be understood that the feed element 126 is electrically connected to the power supply of the circuit board 124. The feed element 126 can be understood as a metal wire, and the circuit board 124 can supply power to the screen frame 130 through the feed element 126.

[0034] It should be noted that the antenna radiation effect is better when the power supply for the mobile terminal 100 is placed near the edge of the device. Based on this, the positions of the circuit board 124 and the power supply component 126 will be described below.

[0035] Please refer to Figures 1 to 4, and also to Figures 5 and 6. Figure 5 is an exploded view of the mobile terminal provided in this embodiment, and Figure 6 is a partial shaded view of the mobile terminal provided in this embodiment. Exemplarily, the rear shell 110 has a length direction X and a width direction Y. The rear shell 110 includes a first sidewall 116 located in the length direction X and a second sidewall 118 located in the width direction Y, with the first sidewall 116 and the second sidewall 118 perpendicularly connected. The rear shell 110 also includes a rear cover 119, which is bent and connected to the first sidewall 116 and the second sidewall 118 respectively. The rear cover 119, together with the first sidewall 116, the second sidewall 118, and the sidewall opposite to the first sidewall 116 and the second sidewall 118, together form a receiving space 112. A camera decorative hole 114 is disposed on the rear cover 119, and the camera decorative hole 114 is close to the first sidewall 116 and the second sidewall 118. The circuit board 124 is disposed on the side of the camera decorative hole 114 near the first sidewall 116. For example, the circuit board 124 may be at least partially disposed on the camera decorative hole 114 so as to arrange the power supply or power supply component 126 near the edge of the device.

[0036] For example, the screen frame 130 includes a first side 132 and a second side 134 corresponding to the first side wall 116 and the second side wall 118, respectively, and the first side 132 and the second side 134 are connected. The power supply component 126 is disposed on the circuit board 124 near the first side 132, that is, the power supply component 126 is close to the edge of the screen frame 130 to improve the radiation effect of the antenna.

[0037] To tune the impedance, this embodiment of the application also includes an impedance adjustment component, that is, the antenna assembly 120 further includes an impedance adjustment component 128. The two ends of the impedance adjustment component 128 abut against the screen frame 130 and the rear shell 110, respectively, and the impedance adjustment component 128 is electrically connected to the screen frame 130 and the rear shell 110. The impedance adjustment component 128 can also be understood as a grounding component, and the impedance adjustment component 128 is used to tune the impedance of the antenna.

[0038] The impedance adjustment element 128 is spaced apart from the camera decorative hole 114 and is located close to the first sidewall 116. The impedance adjustment element 128 may include conductive foam, and its shape may be, for example, cuboid. The impedance adjustment element 128 can support the screen frame 130 on the back cover 110, and also buffer other connection structures, reducing the impact of device vibrations in the mobile terminal 100 on the antenna.

[0039] It should be noted that the antenna body 122 and the rear shell 110 are directly fed together in this embodiment of the application, which can improve the reliability and stability of the antenna radiated signal.

[0040] For example, the mobile terminal 100 also includes a conductive element 140, with its two ends abutting against the screen frame 130 and the back cover 110 respectively, and the conductive element 140 being electrically connected to the screen frame 130 and the back cover 110.

[0041] The conductive component 140 may include conductive foam, and its shape may be, for example, cuboid. On one hand, it can support the screen frame 130 on the back cover 110; on the other hand, it can also buffer other connecting structures, reducing the impact of device vibrations, such as those in the mobile terminal 100, on the antenna.

[0042] For example, the conductive element 140 is spaced from the camera decorative hole 114 and is disposed near the second sidewall 118 of the rear housing 110. It is understood that the placement of the conductive element 140 can introduce current from the edge of the screen frame 130 into the rear housing 110 to improve the radiation effect of the antenna.

[0043] Please refer to Figures 1 to 6 and Figures 7 to 9. Figure 7 is a graph showing the S11 parameters and antenna efficiency provided in this embodiment of the application. Figure 8 is a 3D simulation diagram of the 2.46GHz frequency under the mobile terminal structure shown in Figure 1. Figure 9 is a 3D simulation diagram of the 5.56GHz frequency under the mobile terminal structure shown in Figure 1. For example, the resonant frequency of the rear cover 110 surrounding the camera decorative hole 114 is dual-band, namely 2400MHz to 2500MHz and 5150MHz to 5850MHz. It should be noted that the antenna in this embodiment of the application can be a WIFI antenna, radiating dual-band frequencies.

[0044] The antenna efficiency of the rear cover 110 surrounding the camera decorative hole 114 is -1.0dB to -0.3dB. For example, the average efficiency can be -0.5dB for the 2400MHz to 2500MHz frequency band and -0.8dB for the 5150MHz to 5850MHz frequency band.

[0045] The antenna working principle in this embodiment is as follows: AC signal flows from the power supply of circuit board 124 into screen frame 130 through power supply component 126, and then into metal back shell 110 through conductive component 140 and impedance adjustment component 128 in screen frame 130. Because the power supply is around the camera decorative hole 114, the AC signal is backflowed, causing it to flow back along the edge of the camera decorative hole 114, generating a specific current loop path. The length of the current loop path can be adjusted by adjusting the size of the camera decorative hole 114, thereby changing the frequency of the radiated signal and thus achieving WIFI frequency coverage, namely 2400MHz to 2500MHz and 5150MHz to 5850MHz frequency coverage.

[0046] The mobile terminal 100 provided in this application embodiment cleverly utilizes the cutout area of ​​the rear camera decorative piece, using the screen frame 130 as the antenna body 122, that is, reusing the screen frame 130. The cutout area, i.e. the hole 114 of the camera decorative piece, forms an irregular ground. The irregular ground gives the antenna body 122 a clear height and can generate a longer current path. By adjusting the size of the cutout area, specific frequency coverage can be achieved, thereby realizing the radiation function of the antenna. This not only meets the communication requirements, but also eliminates the need to make seams or other cutouts on the metal back cover 110, maintaining the integrity and aesthetics of the back cover 110 and enhancing its appearance competitiveness.

[0047] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0048] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0049] The mobile terminal provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A mobile terminal, wherein, include: The rear cover has a receiving space and is provided with a camera decorative part hole; the material of the rear cover is metal. An antenna assembly includes an antenna body located in the receiving space and electrically connected to the rear shell; The antenna assembly can feed power to the rear shell through the antenna body and form a current loop along the camera decorative hole to radiate antenna signals around the camera decorative hole.

2. The mobile terminal according to claim 1, wherein, The antenna body includes a screen frame, which is used to support the display screen of the mobile terminal.

3. The mobile terminal according to claim 2, wherein, The antenna assembly includes a circuit board disposed between the screen frame and the rear cover, and abutting against the rear cover, wherein the circuit board is electrically connected to the screen frame and the rear cover.

4. The mobile terminal according to claim 3, wherein, The antenna assembly further includes a power feeder, the two ends of which abut against the circuit board and the screen frame respectively, and the power feeder is electrically connected to the circuit board and the screen frame respectively.

5. The mobile terminal according to claim 4, wherein, The circuit board has a power supply and a matching circuit that electrically connects the power supply and the power supply component.

6. The mobile terminal according to claim 4, wherein, The rear shell has a length direction and a width direction. The rear shell includes a first sidewall located in the length direction and a second sidewall located in the width direction. The first sidewall and the second sidewall are perpendicularly connected. The circuit board is disposed on the side of the camera decorative hole near the first sidewall.

7. The mobile terminal according to claim 6, wherein, The screen frame includes a first side and a second side respectively corresponding to the first side wall and the second side wall, and the power supply component is disposed on the circuit board near the first side.

8. The mobile terminal according to claim 6, wherein, The mobile terminal further includes: a conductive element, with its two ends respectively abutting against the screen frame and the rear shell, and electrically connected to the screen frame and the rear shell.

9. The mobile terminal according to claim 8, wherein, The conductive element is spaced apart from the hole in the camera decorative element and is located close to the second sidewall.

10. The mobile terminal according to claim 8, wherein, The conductive component includes conductive foam.

11. The mobile terminal according to claim 6, wherein, The antenna assembly also includes: An impedance adjustment element has its two ends abutting against the screen frame and the rear shell respectively, and is electrically connected to the screen frame and the rear shell.

12. The mobile terminal according to claim 11, wherein, The impedance adjustment component is spaced apart from the hole in the camera decorative component and is located close to the first sidewall.

13. The mobile terminal according to claim 11, wherein, The impedance adjustment element includes conductive foam.

14. The mobile terminal according to claim 2, wherein, The screen frame is made of stainless steel.

15. The mobile terminal according to claim 14, wherein, The screen frame is a complete thin plate, and the screen frame is isolated from the rear shell by a connector.

16. The mobile terminal according to claim 1, wherein, The antenna body is directly fed to the rear shell.

17. The mobile terminal according to claim 1, wherein, The rear shell is made of aluminum alloy.

18. The mobile terminal according to claim 1, wherein, The antenna assembly is a WIFI antenna, and the antenna assembly is capable of radiating dual frequency bands.

19. The mobile terminal according to claim 18, wherein, The resonant frequency band of the rear cover surrounding the camera decorative hole is 2400MHz to 2500MHz and 5150MHz to 5850MHz.

20. The mobile terminal according to claim 1, wherein, The antenna efficiency of the rear housing surrounding the camera decorative hole is -1.0dB to -0.3dB.

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