CN111988455A

CN111988455A - Mobile terminal

Info

Publication number: CN111988455A
Application number: CN202010786568.6A
Authority: CN
Inventors: 陈卫; 罗伟东; 陈义炳
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2020-11-24

Abstract

The embodiment of the application provides a mobile terminal, which comprises a battery cover, a frame, a PCB (printed circuit board), an antenna assembly, a front shell and a display screen, wherein the battery cover comprises a metal area; the battery cover and the display screen are respectively covered on two side surfaces of the frame to form an accommodating space, and the PCB, the antenna assembly and the front shell are arranged in the accommodating space; the battery cover covers the PCB, and a grounding point on the PCB is electrically connected with a metal area of the battery cover; the battery cover is provided with a clearance area, the clearance area corresponds to an area outside the metal area on the battery cover, and an orthographic projection area of the antenna assembly on the PCB is positioned in the orthographic projection area of the clearance area on the PCB; an antenna assembly and a front housing are disposed in sequence beneath the PCB board, wherein an inner surface of the display screen is disposed adjacent to the first surface of the front housing. According to the embodiment of the application, the positions of the antenna and the PCB are adjusted, and the battery cover is grounded, so that the performance of the antenna and the overall performance of the mobile terminal are improved.

Description

Mobile terminal

Technical Field

The present application relates to the field of communications technologies, and in particular, to a mobile terminal.

Background

In a conventional plastic-type mobile phone antenna design, a grounded metal plate, usually made of magnesium-aluminum alloy, is usually disposed on a front shell of a mobile phone. This metal plate serves as a ground terminal for the antenna. The antenna is erected on the mobile phone support and is close to the battery cover or attached to the inside of the battery cover. In the design mode, the antenna is closer to the battery cover of the mobile phone, when a user holds the mobile phone by hands, the antenna is actually held by the palm, and the performance loss of the antenna is very large.

Disclosure of Invention

The embodiment of the application provides a mobile terminal, through the position of adjustment antenna and PCB board to adopt the mode of battery cover ground connection, promote antenna performance and promote mobile terminal's wholeness ability.

The embodiment of the application provides a mobile terminal, which comprises a battery cover, a frame, a PCB (printed circuit board), an antenna assembly, a front shell and a display screen, wherein the battery cover comprises a metal area;

the battery cover and the display screen are respectively covered on two side surfaces of the frame to form an accommodating space, and the PCB, the antenna assembly and the front shell are arranged in the accommodating space;

the battery cover covers the PCB, and a grounding point on the PCB is electrically connected with the metal area of the battery cover;

the battery cover is provided with a clearance area, the clearance area corresponds to an area outside a metal area on the battery cover, and an orthographic projection area of the antenna assembly on the PCB is positioned in the orthographic projection area of the clearance area on the PCB;

the antenna assembly and a front housing are disposed in sequence below the PCB board, wherein an inner surface of the display screen is disposed adjacent to a first surface of the front housing.

In the mobile terminal of this embodiment, the battery cover is a plastic housing embedded with a metal plate, and the metal plate embedded in the plastic housing forms a metal region of the battery cover.

In the mobile terminal of this embodiment, the metal plate is a ground terminal of a metal element inside the mobile terminal.

In the mobile terminal of this embodiment, the metal area is located in the middle of the battery cover, the battery cover further includes a non-metal area, the non-metal area is disposed at the top and the bottom of the metal area, and the non-metal area and the clearance area are overlapped.

In the mobile terminal of this embodiment, the antenna assembly includes an antenna body and an antenna bracket, where a first surface of the antenna bracket is disposed adjacent to the PCB, and the antenna body is disposed on a second surface of the antenna bracket that is not adjacent to the PCB, where the first surface of the antenna bracket is disposed opposite to the second surface of the antenna bracket.

In the mobile terminal of this embodiment, the antenna assembly includes an antenna body disposed on a second surface of the front housing that is not adjacent to the inner surface of the display screen, where the first surface of the front housing is disposed opposite to the second surface of the front housing.

In this embodiment, the mobile terminal further includes a battery, the battery and the PCB are arranged in parallel, the battery cover covers the battery and the PCB, and the PCB is electrically connected to the battery.

In the mobile terminal of this embodiment, the antenna body includes an FPC antenna or an LDS antenna.

In the mobile terminal of this embodiment, the frame is made of a non-metal material or a mixture of metal and non-metal.

In the mobile terminal described in this embodiment, when the mobile terminal is assembled, the assembly is performed according to the assembly sequence of the battery cover, the PCB, the antenna bracket, the antenna body, the front case, and the display screen in sequence.

The mobile terminal provided by the embodiment of the application comprises a battery cover, a frame, a PCB (printed circuit board), an antenna assembly, a front shell and a display screen, wherein the battery cover comprises a metal area; the battery cover and the display screen are respectively covered on two side surfaces of the frame to form an accommodating space, and the PCB, the antenna assembly and the front shell are arranged in the accommodating space; the battery cover covers the PCB, and a grounding point on the PCB is electrically connected with a metal area of the battery cover; the battery cover is provided with a clearance area, the clearance area corresponds to an area outside the metal area on the battery cover, and an orthographic projection area of the antenna assembly on the PCB is positioned in the orthographic projection area of the clearance area on the PCB; an antenna assembly and a front housing are disposed in sequence beneath the PCB board, wherein an inner surface of the display screen is disposed adjacent to the first surface of the front housing. According to the embodiment of the application, the positions of the antenna and the PCB are adjusted, the PCB in the conventional project is close to one side of the front shell, the antenna support is close to one side of the battery cover, the PCB is close to one side of the battery cover, the antenna support is close to one side of the front shell, the plastic battery cover is changed into the battery cover comprising the metal area, the connection mode of the front shell is changed into the grounding mode of the battery cover, and the antenna performance and the overall performance of the mobile terminal are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.

Fig. 2 is another schematic structural diagram of a mobile terminal according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides a mobile terminal. The mobile terminal can be a smart phone, a tablet computer and other devices. Referring to fig. 1 to 3, the mobile terminal 100 includes a cover plate 10, a display 20, a PCB board 30, a battery 40, a housing 50, and an antenna assembly 60, wherein the battery cover includes a metal region 5021, and the housing 50 includes a bezel 501, a battery cover 502, and a front case 503.

The battery cover 502 and the display screen 20 are respectively covered on two sides of the frame 501 to form an accommodating space, and the PCB board 30, the antenna assembly 60 and the front housing 503 are disposed in the accommodating space;

the battery cover 502 covers the PCB 30, and the grounding point 301 on the PCB 30 is electrically connected to the metal region 5021 of the battery cover 502;

the cell cover 502 is provided with a clearance area 5022, the clearance area 5022 corresponds to an area outside the metal area 5021 on the cell cover 502, and the orthographic projection area of the antenna assembly 60 on the PCB 30 is located in the orthographic projection area of the clearance area 5022 on the PCB 30;

the antenna assembly 60 and the front housing 503 are disposed in sequence below the PCB board 30, wherein the inner surface of the display screen 20 is disposed adjacent to the first surface 5031 of the front housing 503. With this design, the antenna body 601 is close to the front case 503 of the mobile terminal 100, and when the user holds the mobile terminal 100 with a hand, the antenna body 601 is not completely held with the hand because of being far away from the battery cover 502, so that the loss of the antenna performance by the hand becomes very low, and the head-hand performance is very good. Meanwhile, because the antenna of the mobile terminal 100 is designed at the lower part of the mobile terminal 100, the antenna body 601 is not too large because of being close to the head of a person because the mobile terminal 100 is designed to be relatively large and the lower part of the mobile terminal 100 is not very close to the head of the person at present. In conclusion, superior performance over conventional designs can be achieved.

Wherein the cover plate 10 is mounted to the display screen 20 to cover the display screen 20. The cover plate 10 may be a transparent glass cover plate so that the display screen transmits light through the cover plate 10 for display. For example, the cover plate 10 may be a glass cover plate made of a material such as sapphire.

The display screen 20 is mounted on the housing 50 to form a display surface of the mobile terminal 100. The display screen 20 may include a display area and a non-display area. The display area is used for displaying information such as images and texts. The non-display area does not display information. Functional components such as a fingerprint module, a touch circuit and the like can be arranged at the bottom of the non-display area.

For example, the display screen 20 may also be a full screen, with only display areas and no non-display areas. Wherein, functional components such as fingerprint module, touch-control circuit set up the below at the full screen. For example, the display screen 20 may also be a shaped screen.

Wherein the case 50 may form an outer contour of the mobile terminal 100. The cover plate 10 may be fixed to the case 50, and the cover plate 10 and the case 50 form a closed space to accommodate the display screen 20, the battery 40, the PCB board 30, the antenna assembly 60, and the like. The housing 50 includes a frame 501, a battery cover 502 and a front housing 503, the frame 501, the battery cover 502 and the front housing 503 are combined with each other to form the housing 50, and the frame 501, the battery cover 502 and the front housing 503 may form a receiving space to receive the display 20, the battery 40, the PCB 30, the antenna assembly 60 and other components. Further, the cover plate 10 may be fixed to the case 50, and the cover plate 10 and the case 50 form a closed space to accommodate the display screen 20, the battery 40, the PCB board 30, the antenna assembly 60, and the like. In some embodiments, the cover plate 10 is disposed on the frame 501, the battery cover 502 is disposed on the frame 501, the cover plate 10 and the battery cover 502 are disposed on opposite sides of the frame 501, and the cover plate 10 and the battery cover 502 are disposed opposite to each other.

It should be noted that, the structure of the housing in the embodiment of the present application is not limited to this, for example: the frame 501, the battery cover 502 and the front case 503 are integrally formed to form a complete housing 50 structure, which directly has a receiving space for receiving the display 20, the battery 40, the PCB 30, the antenna assembly 60 and other devices.

The PCB 30 is also called a printed circuit board, and the PCB 30 may be a main board of the mobile terminal 100, and is an important component for providing electrical connection for each electronic component in the mobile terminal, and may be divided into a single-sided board, a double-sided board, a four-layer board, a six-layer board, and other multi-layer boards according to the number of layers of the circuit board. The PCB board 30 generally comprises a substrate, a metal coating, and a wiring layer. One, two or more of the functional components such as a motor, a microphone, a speaker, an earphone interface, a universal serial bus interface, a front camera, a rear camera, a distance sensor, an ambient light sensor, a receiver, a processor, and a radio frequency module may be integrated on the PCB 30.

In some embodiments, the PCB board 30 may be fixed within the housing 50. Specifically, the PCB 30 may be screwed to the frame 501 by screws, or may be snapped to the frame 501 by a snap-fit manner. It should be noted that the specific fixing manner of the PCB board 30 to the frame 501 according to the embodiment of the present application is not limited thereto, and other manners, such as a manner of fixing by a snap and a screw together, may also be used.

Wherein the battery 40 is installed in a sealed space formed by the cover plate 10 and the case 50, and the battery 30 is electrically connected to the PCB board 30 to supply power to the mobile terminal 100.

In some embodiments, the metal region 5021 of the battery cover 502 is disposed in the middle of the mobile terminal 100. Since the antenna of the mobile terminal 100 is generally designed at the upper and lower portions of the mobile terminal 100, the metal region 5021 of the battery cover 502 is disposed at the middle portion of the mobile terminal 100 to prevent the antenna signal from being affected.

In some embodiments, the battery cap 502 is a plastic housing embedded with a metal plate 504, and the metal plate 504 embedded in the plastic housing forms the metal region 5021 of the battery cap 502. The thickness of the metal plate 504 may be smaller than or equal to the thickness of the plastic housing, and if the thickness of the metal plate 504 is smaller than the thickness of the plastic housing, the metal plate 504 is formed by plating metal on the surface of the plastic housing. If the thickness of the metal plate 504 is equal to the thickness of the plastic housing, the battery cover 502 can be formed by, for example, forming the metal plate 504 and the plastic housing, gluing the metal plate 504, and bonding the plastic housing and the metal plate together to form a complete battery cover 502 structure.

In some embodiments, the metal plate 504 is a ground terminal of a metal component inside the mobile terminal 100. All the devices or elements inside the mobile terminal 100 that need to be grounded are directly or indirectly grounded to the metal plate 504, such as a main board, an antenna platelet, an FPC antenna, a motor, a camera, a speaker, and the like.

In some embodiments, the metal region 5021 is located in the middle of the cell cover 502, the cell cover 502 further comprises a non-metal region 5023, the non-metal region 5023 is disposed at the top and bottom of the metal region 5021, and the non-metal region 5023 coincides with the clearance region 5022. Since the antenna of the mobile terminal 100 is generally designed at the upper and lower portions of the battery cover 502, the battery cover 502 is provided with a non-metal region 5023, i.e., a clearance area 5022, at the top and bottom positions of the metal region 5021 of the battery cover 502, i.e., the battery cover 502 is made of a non-metal material at the upper and lower positions of the battery cover 502, so as not to affect the antenna signal.

In some embodiments, the antenna assembly 60 includes an antenna body 601 and an antenna stand 602, a first face 6021 of the antenna stand 602 is disposed adjacent to the PCB board 30, and a second face 6022 of the antenna stand 602 that is not adjacent to the PCB board 30, wherein the first face 6021 of the antenna stand 602 is disposed opposite the second face 6022 of the antenna stand 602. By adopting the FPC antenna, the antenna body 601 is wired on the antenna support 6022, the FPC antenna is suitable for almost all small electronic products, can be used as a complicated antenna with more than ten frequency bands such as 4G, and has good performance and lower cost. In addition, a certain distance is left between the antenna body 601 and the front shell 503, and the distance ranges from 0.2mm to 0.5mm, so that the front shell 503 is prevented from being deformed when the mobile terminal 100 falls, and the antenna body 601 is prevented from being scratched by the deformed front shell 503.

In some embodiments, when the mobile terminal 100 is assembled, the assembly is performed according to the assembly order of the battery cover 502, the PCB board 30, the antenna bracket 602, the antenna body 601, the front case 503, and the display 20 in this order. Unlike the conventional items, the PCB board 30 of the present invention is adjacent to the battery cover 502 side, and the antenna bracket 602 is adjacent to the front case 503 side. The conventional items are that the PCB board 30 is close to the front case 503 side and the antenna bracket 602 is close to the battery cover 502 side. Therefore, the assembling relationship of the internal modules of the mobile terminal 100 is also changed, and the conventional items are that the components and the PCB 30 are mounted one by one on the basis of the front case 503, and the battery cover 502 is finally mounted, and now, the components and the PCB 30 are mounted one by one on the basis of the battery cover 502, and finally, the assembly of the front case 503 is completed.

In some embodiments, as shown in fig. 3, the antenna assembly 60 includes an antenna body 601, the antenna body 601 is disposed on a second surface 5032 of the front housing 503 that is not adjacent to the inner surface of the display screen 20, wherein the first surface 5031 of the front housing 503 is disposed opposite to the second surface 5032 of the front housing 503. By using the LDS antenna, the pattern of the antenna body 601 is engraved on the front case 503 by laser, so that various irregular surfaces in the front case 503 can be fully utilized, the volume of the antenna is reduced, and the thickness of the mobile terminal 100 is reduced.

In some embodiments, the assembly of the mobile terminal 100 is performed according to the assembly order of the battery cover 502, the PCB board 30, the front case 503, and the display screen 20 in this order. Unlike the conventional items, the PCB board 30 of the present invention is adjacent to one side of the battery cover 502. The conventional item is that the PCB board 30 is close to the front case 503 side. Therefore, the assembling relationship of the internal modules of the mobile terminal 100 is also changed, and the conventional items are that the components and the PCB 30 are mounted one by one on the basis of the front case 503, and the battery cover 502 is finally mounted, and now, the components and the PCB 30 are mounted one by one on the basis of the battery cover 502, and finally, the assembly of the front case 503 is completed.

In some embodiments, the mobile terminal 100 further comprises a battery 40, the battery 40 is juxtaposed with the PCB 30, the battery cover 502 covers the battery 40 and the PCB 30, and the PCB 30 is electrically connected to the battery 40.

In some embodiments, the antenna body 601 includes a FPC antenna or a LDS antenna. The LDS antenna technology, namely the laser direct forming technology, is characterized in that after laser is projected on a shell made of an LDS material, metal is plated on the surface of the shell to form a three-dimensional antenna circuit pattern, so that the antenna can be directly made on the surface of the shell, the space of a mobile terminal is saved on one hand, the design of the mobile terminal is thinner, and the antenna is more stable on the other hand, and the dimension and the manual assembly error of a production line cannot exist like machining.

In some embodiments, the frame 501 is made of a non-metal material or a mixture of metal and non-metal. If the frame 501 is a mixture of metal and nonmetal, the frame 501 located at the upper and lower portions of the mobile terminal 100 is made of nonmetal, and the frame 501 located at the middle portion of the mobile terminal 100 is made of metal, so that the antenna signal of the mobile terminal 100 is not affected by the antenna signal of the mobile terminal 100 because the antenna of the mobile terminal 100 is usually designed at the upper and lower portions of the mobile terminal 100.

In summary, the embodiment of the present application provides a mobile terminal, which includes a battery cover 502, a bezel 501, a PCB 30, an antenna assembly 60, a front case 503, and a display screen 20, wherein the battery cover 502 includes a metal region 5021; the battery cover 502 and the display screen 20 are respectively covered on two side surfaces of the frame 501 to form an accommodating space, and the PCB board 30, the antenna assembly 60 and the front shell 503 are arranged in the accommodating space; the battery cover 502 covers the PCB 30, and the grounding point 301 on the PCB 30 is electrically connected with the metal region 5021 of the battery cover; the battery cover 502 is provided with a clearance area 5022, the clearance area 5022 corresponds to an area on the battery cover 502 except for the metal area 5021, and an orthographic projection area of the antenna assembly 60 on the PCB 30 is located in an orthographic projection area of the clearance area 5022 on the PCB 30; the antenna assembly 60 and the front case 503 are disposed in this order under the PCB board 30, wherein the inner surface of the display screen 20 is disposed adjacent to the first surface 5031 of the front case 503. According to the embodiment of the application, by adjusting the positions of the antenna 601 and the PCB 30, the PCB 30 is close to one side of the front shell 503, the antenna support 602 is close to one side of the battery cover 502, the PCB 30 is close to one side of the battery cover 502, the antenna support 602 is close to one side of the front shell 503 in the conventional project, the plastic battery cover is changed into the battery cover 502 comprising a metal area, the connection mode of the front shell is changed into the grounding mode of the battery cover, and the antenna performance and the overall performance of the mobile terminal are improved.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The foregoing describes in detail a mobile terminal provided in an embodiment of the present application, and a specific example is applied to explain the principle and the implementation of the present application, and the description of the foregoing embodiment is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A mobile terminal is characterized by comprising a battery cover, a frame, a PCB board, an antenna assembly, a front shell and a display screen, wherein the battery cover comprises a metal area;

2. The mobile terminal of claim 1, wherein the battery cover is a plastic case inlaid with a metal plate, and the metal plate inlaid in the plastic case constitutes a metal region of the battery cover.

3. The antenna device according to claim 2, wherein the metal plate is a ground terminal of a metal member inside the mobile terminal.

4. The mobile terminal of claim 1, wherein the metal region is located at a middle portion of the battery cover, the battery cover further comprising a non-metal region disposed at a top and a bottom of the metal region, the non-metal region and the clearance area being coincident.

5. The mobile terminal of claim 1, wherein the antenna assembly comprises an antenna body and an antenna mount, a first surface of the antenna mount disposed adjacent to the PCB board, the antenna body disposed on a second surface of the antenna mount not adjacent to the PCB board, wherein the first surface of the antenna mount is disposed opposite the second surface of the antenna mount.

6. The mobile terminal of claim 1, wherein the antenna assembly comprises an antenna body disposed on a second surface of the front housing that is not adjacent to the inner surface of the display screen, wherein the first surface of the front housing is disposed opposite the second surface of the front housing.

7. The mobile terminal of claim 1, further comprising a battery, wherein the battery and the PCB are juxtaposed, the battery cover covers the battery and the PCB, and the PCB is electrically connected to the battery.

8. A mobile terminal as recited in claim 1, wherein the antenna body comprises an FPC antenna or an LDS antenna.

9. The mobile terminal of claim 1, wherein the bezel is a non-metallic material or a mixture of metal and non-metal.

10. The mobile terminal of claim 5, wherein when the mobile terminal is assembled, the assembly is performed according to an assembly order of a battery cover, a PCB board, an antenna stand, an antenna body, a front case, and a display screen in this order.