WO2022257668A1

WO2022257668A1 - Antenna structure and terminal device

Info

Publication number: WO2022257668A1
Application number: PCT/CN2022/091412
Authority: WO
Inventors: 万伟舰; 罗永清; 付斯林
Original assignee: 荣耀终端有限公司
Priority date: 2021-06-10
Filing date: 2022-05-07
Publication date: 2022-12-15
Also published as: CN113497348B; CN113497348A

Abstract

The present application discloses an antenna structure and a terminal device, which relate to the technical field of antenna structures and are used to solve the problems in the related art of antennas having complex grounding structures and high costs. The present antenna structure comprises a housing, multiple antenna radiators, a grounding member, and an electrically conductive filler. The housing is an outer housing of the terminal device, and comprises a bottom wall, and a side wall disposed at an edge of the bottom wall. The multiple antenna radiators are disposed at the edge of the bottom wall and distributed at intervals along a circumferential direction of the bottom wall. The grounding member is disposed in the housing and is configured as a signal reference ground for the antenna radiators. The electrically conductive filler fills a gap between each of the antenna radiators and the grounding member, and electrically connects each of the antenna radiators to the grounding member. The present application can be used in a terminal device such as a mobile phone.

Description

A kind of antenna structure and terminal equipment

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office on June 10, 2021, with the application number 202110658163.9 and the application name "Antenna Structure and Terminal Equipment", the entire contents of which are incorporated in this application by reference middle.

technical field

The present application relates to the technical field of terminals, and in particular to an antenna structure and a terminal device.

Background technique

Antennas are installed in terminal devices such as mobile phones to receive and send radio frequency signals and communicate with the outside world, and the antennas usually need to be grounded. How to design the grounding of the antenna has become an important issue in the industry.

In a terminal device in the related art, the grounding method of the antenna is connected to the signal reference ground of the antenna through a conductive shrapnel. However, this grounding method requires an installation structure for fixing the conductive shrapnel between the antenna and the signal reference ground. , so that the grounding structure of the antenna is more complicated and the cost is higher.

Contents of the invention

Embodiments of the present application provide an antenna structure and a terminal device, which are used to solve the problems in the related art that the grounding structure of the antenna is relatively complicated and the cost is high.

In order to achieve the above object, the embodiments of the present application adopt the following technical solutions:

In the first aspect, an embodiment of the present application provides an antenna structure for a terminal device, including a casing, a grounding component, a conductive filler, and a plurality of antenna radiators, the casing is the shell of the terminal device, It includes a bottom wall and a side wall arranged at the edge of the bottom wall; a plurality of antenna radiators are arranged at the edge of the bottom wall and arranged at intervals along the circumference of the bottom wall; the grounding part is arranged on the shell body, and is configured as the signal reference ground of the antenna radiator; a conductive filling body is filled in the gap between each of the antenna radiators and the ground component, and each of the antenna radiators is connected to the ground component. The grounding part is electrically connected.

By adopting the above solution, the conductive filling body does not need to occupy other spaces in the casing, especially the space along the thickness direction of the bottom wall in the casing, which can optimize the layout of components in the casing and make the terminal equipment thinner. At the same time, realizing the grounding through the conductive filler can greatly simplify the structure of the antenna, thereby helping to reduce the cost of the terminal equipment.

In some embodiments, the bottom wall includes two first edges located at opposite ends of the bottom wall, and the conductive fillers connected to each of the antenna radiators are located at the first edges.

By adopting the above solution, it is possible to avoid the interference between the conductive filling body and the devices arranged at other edges of the bottom wall.

In some embodiments, the bottom wall further includes two second edges located at opposite ends of the bottom wall, the second edges are connected between the two first edges, and each of the second edges The edge and the adjacent first edge form a corner at the junction; the plurality of antenna radiators include a first antenna radiator arranged at the corner, and a second antenna radiator arranged at the first edge An antenna radiator; a part of the first antenna radiator is located at the first edge, and another part is located at the second edge, and the part of the first antenna radiator located at the second edge is the same as the second edge The gap of the grounding component is filled with the conductive filler.

By adopting the above solution, the antenna radiator can not only utilize the space at the first edge, but also fully utilize the space at the second edge, thus optimizing the layout of multiple antenna radiators.

In some embodiments, there is a first antenna gap between the first antenna radiator and the second antenna radiator, the conductive filler connected to the first antenna radiator, the second antenna The conductive fillers connected to the radiator are all disposed at the gaps of the first antenna.

By adopting the above solution, the arrangement of the conductive filling body can be facilitated, which is beneficial to improving the efficiency of setting the conductive filling body.

In some embodiments, the conductive filling body to which the first antenna radiator is connected and the conductive filling body to which the second antenna radiator is connected are integrated structures.

By adopting the above solution, the installation efficiency of the conductive filler can be further improved.

In some embodiments, the first antenna radiator has a first feed point located at the second edge, and a first ground point located at the first edge, and the first ground point passes through the The conductive filler is electrically connected to the ground component.

By adopting the above solution, the clutter generated by the antenna radiator when the distance between the first feed point and the first ground point is too short can be avoided.

In some embodiments, the first antenna radiator further has a second feed point located between the first feed point and the first ground point.

By adopting the above solution, the interference to the signal sent by the second antenna radiator when the electronic device is working can be reduced.

In some embodiments, each of the corners is provided with the first antenna radiator, and at least two adjacent first antenna radiators have a second antenna at the second edge. gap, and the first feeding points of two adjacent first antenna radiators are both arranged at the second antenna gap.

By adopting the above solution, the layout of the plurality of antenna radiators is optimized, so that the plurality of second antenna radiators can better transmit and receive signals, so as to improve the quality of communication.

In some embodiments, each of the corners is provided with the first antenna radiator, and the first antenna radiators located at two of the corners of the bottom wall are high-frequency antenna radiators, The first antenna radiators located at the other two corners of the bottom wall are low-frequency antenna radiators.

By adopting the above scheme, the mobile phone can not only send and receive low-frequency signals, but also can send and receive high-frequency signals, thereby meeting the requirements of the mobile phone for sending and receiving high- and low-frequency signals.

In some embodiments, the second antenna radiator is a WIFI antenna radiator.

By adopting the above scheme, the mobile phone can receive WIFI signals, so as to meet the requirements of the mobile phone for surfing the Internet and transmitting data.

In some embodiments, the first antenna radiators located at two opposite corners of the bottom wall are high-frequency antenna radiators, and the first antenna radiators located at the other two opposite corners of the bottom wall The first antenna radiator is a low-frequency antenna radiator.

By adopting the above scheme, on the one hand, it can avoid the mutual interference of the signals generated when the two low-frequency/high-frequency antenna radiators are relatively close, and on the other hand, it can also reduce the overlapping of the radiation areas of the two low-frequency/high-frequency antenna radiators, so that Increases the range of the area radiated by the two LF/HF antenna radiators.

In some embodiments, the first antenna radiators located at the four corners of the bottom wall are respectively a first sub-radiator, a second sub-radiator, a third sub-radiator and a fourth sub-radiator. body, the first sub-radiator and the third sub-radiator are low-frequency antenna radiators, the second sub-radiator and the fourth sub-radiator are high-frequency antenna radiators, and the second antenna The radiator is located between the second sub-radiator and the third sub-radiator; the distance between the first feed point of the first sub-radiator and the first grounding point ranges from 40 to 50mm ; The distance between the first feed point of the second sub-radiator and the first ground point is 30-40mm; the distance between the first feed point of the third sub-radiator and the first ground point The distance between the first grounding points is 30-40 mm; the distance between the first feeding point of the fourth sub-radiator and the first grounding point is 20-30 mm.

By adopting the above-mentioned solution, the clutter generated by the first antenna radiator can be minimized to ensure the normal transmission and reception of signals by the first antenna radiator.

In some embodiments, the second antenna radiator has a third feed point and a second ground point, the second ground point is electrically connected to the ground component through the conductive filler, and the third feed point The distance between the electrical point and the second grounding point is 17-20 mm.

By adopting the above solution, the clutter generated by the second antenna radiator can be minimized, and the normal transmission and reception of signals by the second antenna radiator can be ensured.

In some embodiments, each of the antenna radiators and the bottom wall is an integral structure.

By adopting the above solution, the number of components of the terminal equipment is greatly reduced, which is beneficial to improving the assembly efficiency of the terminal equipment.

In some embodiments, there is a gap between each antenna radiator and the bottom wall.

By adopting the above solution, a potential difference can be formed between the antenna radiator and the bottom wall, thereby enhancing the radiation performance of the antenna radiator.

In some embodiments, the antenna structure further includes an insulator disposed in the slot.

By adopting the above solution, the radiation performance of the antenna radiator can be further enhanced and the overall strength of the antenna radiator and the bottom wall can be improved.

In some embodiments, the insulating member is integrated with the side wall.

By adopting the above solution, on the one hand, the number of components of the terminal equipment is reduced, and the assembly efficiency of the terminal equipment is improved.

In some embodiments, the conductive filler is conductive glue.

By adopting the above solution, the installation of the grounding component in the housing can be made more firm.

In some embodiments, the resistance of the conductive filler is less than or equal to 1Ω.

By adopting the above solution, it is possible to reduce the resistance of the conductive filler to the grounding current of the antenna radiator, which is beneficial to reduce the power consumption of the terminal equipment by the conductive filler.

In some embodiments, the antenna structure further includes an insulating filling body filled in the gap between the ground component and the side wall, and the insulating filling body is staggered from the conductive filling body along the circumferential direction of the bottom wall set up.

By adopting the above scheme, the insulating filling body can prevent external water, impurities, etc. from entering the casing from the gap between the grounding part and the side wall to corrode the parts in the casing, and the insulating filling body can also play a certain role in the conductive filling body. Limiting function, so as to prevent the conductive filling body from shifting in the circumferential direction of the bottom wall.

In some embodiments, the insulating filler is a sealant.

By adopting the above solution, the sealant not only fills the gap between the grounding component and the side wall to seal the gap, but also can bond the grounding component to the side wall, so that the grounding component is in the front shell The installation of the side wall is more firm.

In a second aspect, an embodiment of the present application provides a terminal device, including the antenna structure described in the first aspect.

The beneficial effects of the terminal device are the same as those of the antenna structure in the first aspect, and will not be repeated here.

In some embodiments, the terminal device is a liquid crystal display device, and the liquid crystal display device includes a backlight and a metal backplane for carrying the backlight, and the metal backplane is the grounding component. Alternatively, the terminal device is an OLED display device, and the OLED display device includes a display panel and a metal support for supporting the display panel, and the metal support is the grounding component.

By adopting the above solution, the gap formed between the antenna radiator and the ground component is located laterally of the ground component, so that the conductive filler can be easily filled into the gap formed between the antenna radiator and the ground component.

Description of drawings

FIG. 1 is a schematic diagram of the front of a mobile phone in some embodiments of the present application;

Fig. 2 is an explosion diagram of the mobile phone in Fig. 1;

Fig. 3 is a schematic structural diagram of the mobile phone of Fig. 1;

Fig. 4 is the A-A sectional view of Fig. 1;

Fig. 5 is the B-B sectional view of Fig. 1;

6 is a schematic diagram of the positional relationship between the antenna radiator of the mobile phone and the bottom wall of the front case in some embodiments of the present application;

Fig. 7 is a schematic structural diagram of Fig. 6;

FIG. 8 is a structural schematic view of the bottom wall and multiple antenna radiators in FIG. 6 at a viewing angle;

FIG. 9 is a schematic structural diagram of the bottom wall and multiple antenna radiators in FIG. 6 at another viewing angle;

Fig. 10 is a schematic structural diagram of a mobile phone in other embodiments of the present application.

Detailed ways

In the embodiments of the present application, the terms "first" and "second" are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

In the embodiment of the present application, it should be noted that the term "electrical connection" should be understood in a broad sense, for example, it may be to realize current conduction through direct connection, or to realize electric energy conduction through capacitive coupling.

The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, an e-reader, a wearable device, a remote controller, a POS (point of sales terminal; point of sale information management system) machine, a notebook computer, a personal digital assistant (personal digital assistant) assistant, PDA), vehicle-mounted equipment, network TV and other terminal equipment with antenna structure.

The following uses a mobile phone as an example to describe the antenna structure of the terminal device in the embodiment of the present application. Other types of terminal devices can be set with reference to the design concept of the antenna structure in the mobile phone embodiment, and will not be repeated here.

As shown in Figure 1, Figure 2 and Figure 3, Figure 1 is a schematic diagram of the front of the mobile phone in some embodiments of the present application, Figure 2 is an exploded view of the mobile phone in Figure 1, and Figure 3 is a simplified structure of the mobile phone in Figure 1 Fig. 3 is only a schematic diagram wherein each part is not shown according to the actual scale of each part. The mobile phone includes a cover plate 21, a display panel 22, an optical film 23, a backlight source 3, a metal back plate, and an antenna structure, and the antenna structure includes a housing 1, a grounding component 4, a conductive filler 6, and a plurality of antenna radiators 5 .

As shown in FIG. 3 and FIG. 4 , FIG. 4 is a sectional view along A-A of FIG. 1 . The casing 1 is the casing of the mobile phone. The casing 1 includes a front casing 11 (also called a middle frame) and a rear cover 12 (also called a battery cover). The front casing 11 includes a bottom wall 111 and an The side wall 112 at. The back cover 12 is buckled on the front case 11, and the back cover 12, the bottom wall 111 and the side wall 112 of the front case 11 form an accommodating space 13, which can be used to accommodate the main board 24, battery and other components of the mobile phone.

A plurality of antenna radiators 5 are arranged at the edge of the bottom wall 111 and are arranged at intervals along the circumference of the bottom wall 111. The grounding component 4 is a metal backplane arranged in the front shell 11, and the metal backplane is configured as an antenna radiator. 5 signal reference ground. By setting the metal backplane as the grounding part 4, the gap formed between the antenna radiator 5 and the metal backplane is located on the side of the metal backplane, so that the conductive filler 6 can be easily filled between the antenna radiator 5 and the metal backplane. in the gap formed between.

The metal back plate encloses an accommodating cavity 41 , and the backlight source 3 is disposed in the accommodating cavity 41 . The backlight 3 includes a light source 31 and a light guide plate 32. The light source 31 is arranged opposite to the side of the light guide plate 32. The light guide plate 32 is mainly used to convert the light source 31 into a surface light source, so as to better meet the needs of the display panel 22. light needs.

Wherein, the light emitting source 31 may be a light bar including a light emitting diode (English full name Light-Emitting Diode; English abbreviation LED), but it is not limited thereto, and other types of light emitting sources 31 are also possible. The metal backplane can be made of metal or a metal alloy, for example, the metal backplane can be made of iron or aluminum alloy.

The above-mentioned backlight 3 may not only be an edge-type backlight, but may also be a direct-type backlight, which is not specifically limited here.

The optical film 23 is disposed on the light emitting side of the light guide plate 32 , and the optical film 23 includes a diffusion sheet, a prism sheet, etc., which can be set according to actual conditions. The display panel 22 is a liquid crystal display panel and is disposed on the light emitting side of the optical film 23 . The cover plate 21 is stacked on the light emitting side of the display panel 22 and used to protect the display panel 22 .

As shown in FIGS. 2 and 4 , the edge of the cover plate 21 is bonded to the side wall 112 through the sealing adhesive 8 , so that the sealing adhesive 8 can seal the gap between the edge of the cover plate 21 and the side wall 112 , In order to prevent external water, oxygen, impurities, etc. from entering the inside of the front shell 11 .

As shown in FIG. 3 and FIG. 4 , the conductive filler 6 is filled in the gap between each antenna radiator 5 and the ground component 4 , and electrically connects each antenna radiator 5 and the ground component 4 . Compared with the method of grounding through the shrapnel, the grounding is realized through the conductive filling body 6. On the one hand, the conductive filling body 6 makes full use of the gap between the antenna radiator 5 and the grounding part 4, and does not need to occupy other parts in the housing 1. The space, especially the space in the casing 1 along the thickness direction of the bottom wall 111, can optimize the layout of the internal parts of the casing 1 and make the mobile phone thinner. On the other hand, if the grounding is realized through the conductive filler 6, then there is no need to arrange shrapnel and its installation structure between the antenna radiator 5 and the grounding component 4, which greatly simplifies the antenna structure, thereby helping to reduce the cost of the mobile phone.

In some embodiments, as shown in FIG. 3 , the conductive filler 6 can be conductive glue, so that the conductive glue can not only electrically connect the antenna radiator 5 to the grounding component 4, but also connect the antenna radiator 5 to the grounding component. 4 bonding, so that the installation of the grounding component 4 in the front case 11 is more firm, avoiding poor contact between the conductive filler 6 and the grounding component 4 caused by shaking between the grounding component 4 and the antenna radiator 5 .

In some embodiments, the resistance of the conductive filler 6 is less than or equal to 1Ω. In this way, the conductive filler 6 with a smaller resistance can reduce the resistance of the conductive filler 6 to the grounding current of the antenna radiator 5, and not only ensure that the antenna radiator 5 is electrically connected to the grounding component 4 smoothly, so as to smoothly realize the antenna radiator 5, and help to reduce the consumption of electric energy of the mobile phone by the conductive filler 6, thereby helping to improve the standby time of the mobile phone.

Wherein, the material of the conductive adhesive may be a resin matrix mixed with conductive fillers, wherein the resin matrix may be polyacrylic acid, epoxy resin, silicone resin, polyimide resin, phenolic resin, polyurethane and the like. Conductive fillers can be gold, silver, copper, aluminum, zinc, iron, nickel powder and graphite and some conductive compounds.

Of course, in addition to the conductive glue, the conductive filler 6 can also be fillers such as conductive foam, conductive rubber, and conductive silica gel, which can be determined according to actual conditions.

In some embodiments, as shown in FIG. 6 and FIG. 7, FIG. 6 is a schematic diagram of the positional relationship between the antenna radiator 5 and the bottom wall 111 of the front case 11 of the mobile phone in some embodiments of the present application, and FIG. The simplified structure diagram is just a schematic diagram, and the structures therein are not shown according to the actual scale of the antenna radiator 5 and the bottom wall 111 of the front case 11 . There are a plurality of antenna radiators 5 arranged at intervals along the circumference of the bottom wall 111 , and the gap between each antenna radiator 5 and the grounding component 4 is filled with conductive fillers 6 .

By arranging a plurality of antenna radiators 5 along the circumference of the bottom wall 111, like this, a plurality of antenna radiators 5 can make full use of the space resources of the front shell 11 of the mobile phone, and communication signals can be transmitted and communicated through the plurality of antenna radiators 5. In this way, the communication quality can be improved, and the channel capacity of the system can be doubled without increasing the spectrum resources and the transmission power of the antenna radiator 5, so that high-speed communication can be realized.

As shown in FIGS. 6 and 7 , the bottom wall 111 of the front case 11 is roughly rectangular, and the bottom wall 111 includes two first edges 113 located at opposite ends of the bottom wall 111 and two first edges 113 located at opposite ends of the bottom wall 111. Two edges 114 , the second edge 114 is connected between the two first edges 113 , and each second edge 114 forms a corner at a junction with the adjacent first edge 113 .

6 and 7, the two first edges 113 are respectively located at both ends of the bottom wall 111 along the width direction X, and the two second edges 114 are respectively located at both ends of the bottom wall 111 along its length direction Y.

In some embodiments, as shown in FIG. 6 and FIG. 7 , the conductive filling body 6 connected to each antenna radiator 5 is located at the first edge 113 . By disposing the conductive filler 6 at the first edge 113, it is possible to prevent the conductive filler 6 from interfering with devices arranged at other edges of the bottom wall 111, such as shown in FIG. 6 and FIG. The flexible circuit board is usually bent at the second edge 114 on the lower side of the bottom wall 111 to connect to the main board 24 on the back side of the bottom wall 111. If the conductive filler 6 is arranged at the second edge 114 on the lower side of the bottom wall 111 , then the conductive filling body 6 is likely to interfere with the flexible circuit board connected to the display panel 22, and the conductive filling body 6 is arranged at the first edge 113 to prevent the conductive filling body 6 from interfering with the flexible circuit board.

In order to ensure that the conductive filling body 6 connected to each antenna radiator 5 is located at the first edge 113, the layout of multiple antenna radiators 5 is not unique, in some embodiments, as shown in Figure 6 and Figure 7 The plurality of antenna radiators 5 include a first antenna radiator 51 disposed at a corner 115 and a second antenna radiator 52 disposed at a first edge 113; a portion of the first antenna radiator 51 is located at a first edge 113 , another part is located at the second edge 114 , and the gap between the part of the first antenna radiator 51 located at the first edge 113 and the grounding component 4 is filled with the conductive filler 6 .

Through the above layout of the antenna radiator 5, the antenna radiator 5 can not only utilize the space at the first edge 113, but also fully utilize the space at the second edge 114, thus optimizing the layout of multiple antenna radiators 5, The plurality of second antenna radiators 52 can better send and receive signals, so as to improve the communication quality.

Of course, in addition to the above-mentioned layout, the first antenna radiator 51 and the second antenna radiator 52 can also be arranged at the first edge 113, so that the conductive filling body connected to each antenna radiator 5 can also be realized. 6 is located at the first edge 113.

In some embodiments, as shown in FIG. 6 and FIG. 7, there is a first antenna gap 53 between the first antenna radiator 51 and the second antenna radiator 52, and the conductive filler 6 connected to the first antenna radiator 51 The conductive fillers 6 connected to the second antenna radiator 52 are all disposed at the first antenna gap 53 .

In this way, the conductive filling body 6 connected to the first antenna radiator 51 and the second antenna radiator 52 is placed relatively close to the edge of the bottom wall 111, so that the conductive filling body 6 does not need to be moved, so that the conductive filling body 6 can be installed. The arrangement of the conductive filling body 6 is facilitated, which is beneficial to improving the efficiency of setting the conductive filling body 6 .

In some embodiments, as shown in FIG. 7 , the conductive filling body 6 connected to the first antenna radiator 51 and the conductive filling body 6 connected to the second antenna radiator 52 are of an integrated structure, that is: the first antenna radiator The conductive filling body 6 connected to the body 51 and the conductive filling body 6 connected to the second antenna radiator 52 are the same conductive filling body 6 . In this way, the grounding of the first antenna radiator 51 and the second antenna radiator 52 can be realized through a conductive filler 6, and the number of settings of the conductive filler 6 can be saved. The process can realize the grounding of the first antenna radiator 51 and the second antenna radiator 52 , which saves the time for setting the conductive filling body 6 and is beneficial to further improve the installation efficiency of the conductive filling body 6 .

In some embodiments, as shown in FIG. 6 and FIG. 7 , the first antenna radiator 51 has a first feed point 511 located at the second edge 114 and a first ground point 512 located at the first edge 113, The first ground point 512 is electrically connected to the ground component 4 through the conductive filler 6 .

By setting the first feeding point 511 and the first grounding point 512 at different edges of the bottom wall 111 respectively, it can be better ensured that the distance between the first feeding point 511 and the first grounding point 512 is within the set distance. Therefore, the clutter generated by the antenna radiator 5 can be avoided when the distance between the first feed point 511 and the first ground point 512 is too short.

In some embodiments, as shown in FIG. 6 and FIG. 7 , the first antenna radiator 51 further has a second feed point 513 located between the first feed point 511 and the first ground point 512 .

In this way, when there are many electronic devices arranged at the second edge 114 of the bottom wall 111, for example, as shown in Figure 6 and Figure 6, the motherboard 24 of the mobile phone is usually arranged at a position close to the second edge 114 above. A plurality of electronic devices are closer to the second antenna radiator 52, by adding a second feeding point to the second antenna radiator 51 (that is, the second antenna radiator 51a and the second antenna radiator 51b) arranged here 513 can increase the number of feed points on the first antenna radiator 51 to increase the signal strength on the first antenna radiator 51, thereby improving the anti-interference performance of the first antenna radiator 51 and reducing the impact on the second antenna when the electronic device is working. The antenna radiator 52 transmits interference of the signal.

In some embodiments, as shown in FIG. 6 and FIG. 7 , a first antenna radiator 51 is provided at each corner 115, and the first antenna radiators 51 located at the four corners 115 of the bottom wall 111 are respectively the first antenna radiator 51. A sub-radiator 51a, a second sub-radiator 51b, a third sub-radiator 51c and a fourth sub-radiator 51d. By setting in this way, the utilization of the space around the bottom wall 111 by the plurality of antenna radiators 5 can be further improved, the layout of the plurality of antenna radiators 5 is optimized, and the plurality of second antenna radiators 52 can better transmit and receive signals. , to improve the quality of communication.

Wherein, the second feeding point 513 can be set at the first edge 113 or at the second edge 114. For example, as shown in FIGS. 6 and 7, the second feeding point 513 of the first sub-radiator 51a is located at At the first edge 113 , the second feeding point 513 of the second sub-radiator 51 b is located at the second edge 114 . The location of the second feeding point 513 may be more practical, as long as the distance between the second feeding point 513 and the first grounding point 512 is within a preset range.

In some embodiments, as shown in FIG. 6 and FIG. 7, the first sub-radiator 51a and the second sub-radiator 51b are arranged adjacently, and the first sub-radiator 51a and the second sub-radiator 51b are arranged in the second There is a second antenna gap 54 at the edge 114 , and the first feeding points 511 of the first sub-radiator 51 a and the second sub-radiator 51 b are both arranged at the second antenna gap 54 .

By setting in this way, the distance between the first feed point 511 of the first sub-radiator 51a and the second sub-radiator 51b is relatively short, so as to facilitate centralized feeding of the first sub-radiator 51a and the second sub-radiator 51b, Therefore, the space occupied by the feeding lines of the first sub-radiator 51a and the second sub-radiator 51b is reduced.

In addition, in mobile phones, the main board is usually set close to the second edge 114, so that the first feed point 511 of the first sub-radiator 51a and the second sub-radiator 51b is set at the second antenna gap 54, so that the first sub-radiator The first feed point 511 of the radiator 51a and the second sub-radiator 51b is relatively close to the main board, which is also convenient for the main board to feed power to the first sub-radiator 51a and the second sub-radiator 51b.

Of course, the above arrangement is not only applicable to the first sub-radiator 51a and the second sub-radiator 51b, but also applicable to the other two adjacent third sub-radiator 51c and fourth sub-radiator 51d.

The width of the first antenna gap 53 and the second antenna gap 54 is 1 mm, but it is not limited thereto, and can also be set to other values according to actual needs.

In some embodiments, the first antenna radiators 51 located at two corners 115 of the bottom wall 111 are high-frequency antenna radiators, and the first antenna radiators 51 located at the other two corners 115 of the bottom wall 111 are low-frequency antennas. radiator. Specifically as shown in FIG. 6 and FIG. 7 , the second sub-radiator 51b and the fourth sub-radiator 51d are high-frequency antenna radiators, and the first sub-radiator 51a and the third sub-radiator 51c are low-frequency antenna radiators.

Wherein, the frequency band of the signals transmitted and received by the second sub-radiator 51b and the fourth sub-radiator 51d can be between 1.7GHZ～2.7GHZ, and the frequency band of the signals transmitted and received by the first sub-radiator 51a and the third sub-radiator 51c can be in 700MHZ-960MHZ.

By setting in this way, the mobile phone can not only send and receive low-frequency signals, but also send and receive high-frequency signals, thereby meeting the requirements of the mobile phone for sending and receiving high- and low-frequency signals.

In some embodiments, as shown in FIG. 6 and FIG. 7 , the first antenna radiators 51 located at two opposite corners 115 of the bottom wall 111 are high-frequency antenna radiators, and the first antenna radiators 51 located at the other two opposite corners 115 of the bottom wall 111 are The first antenna radiator 51 at the corner 115 is a low-frequency antenna radiator, that is, the second sub-radiator 51b and the fourth sub-radiator 51d are respectively located at two opposite corners 115 of the bottom wall 111, and the first sub-radiator The body 51a and the third sub-radiator 51c are respectively located at the other two opposite corners 115 of the bottom wall 111 . Wherein, the two opposite corners 115 of the bottom wall 111 specifically refer to two non-adjacent corners 115 of the bottom wall 111 .

Compared with setting two high-frequency antenna radiators (that is, the second sub-radiator 51b and the fourth sub-radiator 51d) at two adjacent corners 115, disposing the two high-frequency antenna radiators At the two opposite corners 115, the distance between the two high-frequency antenna radiators is relatively far in space. On the one hand, the mutual interference of high-frequency signals generated when the two high-frequency antenna radiators are close can be avoided. On the one hand, the overlapping of the radiation areas of the two high-frequency antenna radiators can also be reduced, thereby increasing the range of the radiation areas of the two high-frequency antenna radiators.

Similarly, compared to setting two low-frequency antenna radiators (the first sub-radiator 51a and the third sub-radiator 51c) at two adjacent corners 115, two low-frequency antenna radiators are arranged at Two opposite corners 115, so that the distance between the two low-frequency antenna radiators is relatively far in space. On the one hand, it can avoid the low-frequency signals generated when the two low-frequency antenna radiators are close to each other. Interference, on the other hand, it can also The overlapping of the radiation areas of the two low-frequency antenna radiators is reduced, thereby increasing the range of the radiation areas of the two low-frequency antenna radiators.

In some embodiments, as shown in FIG. 6 and FIG. 7 , the second antenna radiator 52 is a WIFI (Wireless-Fidelity; wireless network) antenna radiator. Through such settings, the mobile phone can receive WIFI signals to meet the requirements of the mobile phone for surfing the Internet and transmitting data.

Wherein, the frequency band in which the second antenna radiator 52 receives the WIFI signal may be between 2.4GHz-2.5GHz.

It can be seen from FIG. 6 and FIG. 7 that the second antenna radiator 52 is located at the first edge 113 and is not provided at the corner 115 . The advantage of this setting is: when holding a mobile phone, such as when playing games, the human hands are held at the upper and lower ends of the mobile phone; The hand will block the position of the corner 115 to a certain extent, and setting the second antenna radiator 52 at the first edge 113 can reduce the influence of the hand blocking on the reception of WIFI signals by the second antenna radiator 52 .

It should be noted that: since the signals sent and received by the first sub-radiator 51a and the third sub-radiator 51c are low-frequency signals, the wavelength of the low-frequency signal is longer, and the diffraction ability is stronger. The influence of the sending and receiving signals of the first sub-radiator 51a and the third sub-radiator 51c at 115 is relatively small. Because the second sub-radiator 51b and the fourth sub-radiator 51d are located at two corners 115, they can send and receive high-frequency signals at different positions, and the ability to send and receive signals is relatively strong. The influence of the transmitting and receiving signals of the second sub-radiator 51b and the fourth sub-radiator 51d is also relatively small.

In some embodiments, as shown in FIG. 6 and FIG. 7 , the second antenna radiator 52 is located between the second sub-radiator 51 b and the third sub-radiator 51 c. The distance d1 between the first feed point 511 and the first ground point 512 of the first sub-radiator 51a ranges from 40 to 50 mm. The distance d2 between the first feed point 511 and the first ground point 512 of the second sub-radiator 51b ranges from 30mm to 40mm. The distance d3 between the first feed point 511 and the first ground point 512 of the third sub-radiator 51c ranges from 30mm to 40mm. The distance d4 between the first feed point 511 and the first ground point 512 of the fourth sub-radiator 51d ranges from 20 to 30 mm.

Through the above settings, the distance between the first feeding point 511 of the first antenna radiator 51 and the first grounding point 512 can be better avoided, thereby minimizing the clutter generated by the first antenna radiator 51 and ensuring that the first antenna radiator 51 generates clutter. An antenna radiator 51 transmits and receives signals normally.

In some embodiments, as shown in FIG. 6 and FIG. 7 , the second antenna radiator 52 has a third feed point 521 and a second ground point 522, and the second ground point 522 is electrically connected to the ground member 4 through the conductive filler 6. connection, the distance d5 between the third feeding point 521 and the second grounding point 522 ranges from 17 to 20 mm.

Through the above settings, the distance between the third feeding point 521 and the second grounding point 522 of the second antenna radiator 52 can be better avoided, thereby minimizing the clutter generated by the second antenna radiator 52 and ensuring the second antenna radiator 52. The second antenna radiator 52 transmits and receives signals normally.

It should be noted that when designing the first antenna radiator 51 and the second antenna radiator 52 , the lengths of the first antenna radiator 51 and the second antenna radiator 52 are proportional to the wavelengths of the signals they transmit and receive. The longer the length of the radiator, the longer the wavelength of the signal sent and received by the radiator, and the lower the frequency of the signal sent and received by the radiator. In the design, the length of the radiator of the low-frequency antenna is greater than the length of the radiator of the high-frequency antenna. The distance range between the first feed point 511 of the radiator 51a and the third sub-radiator 51c and the first ground point 512 is larger, and the first feed point of the second sub-radiator 51b and the fourth sub-radiator 51d The distance range between the point 511 and the first grounding point 512 should be designed to be smaller.

In some embodiments, as shown in FIG. 4 and FIG. 6 , each antenna radiator 5 and the bottom wall 111 are integrally structured. Like this, each antenna radiator 5 and the bottom wall 111 are a whole, the antenna that just above-mentioned antenna radiator 5 forms is MDA (Mode decoration antenna; mode decoration antenna), greatly reduces the quantity of the parts of mobile phone, has It is beneficial to improve the assembly efficiency of the mobile phone.

The antenna radiator 5 and the bottom wall 111 may be made of metal or metal alloy materials, such as iron, aluminum alloy, and the like.

In some embodiments, as shown in FIG. 8 and FIG. 9 , FIG. 8 and FIG. 9 respectively show structural diagrams of the bottom wall 111 and the plurality of antenna radiators 5 in FIG. 6 at different viewing angles. There is a gap 55 between each antenna radiator 5 and the bottom wall 111 . By setting the slit 55, a capacitor is formed between the antenna radiator 5 and the bottom wall 111, and the antenna is clear at the gap 55, so that a potential difference is formed between the antenna radiator 5 and the bottom wall 111, thereby enhancing the performance of the antenna radiator 5. radiation performance.

Wherein, in order to significantly enhance the radiation performance of the antenna radiator 5, the width of the slot 55 is in the range of 1-1.2 mm.

In some embodiments, as shown in FIG. 4 , the antenna structure further includes an insulator 14 disposed in the slot 55 . By disposing the insulator 14 in the gap 55, on the one hand, the dielectric constant of the medium between the antenna radiator 5 and the bottom wall 111 is increased, and the capacitance between the antenna radiator 5 and the bottom wall 111 is increased. It is beneficial to further enhance the radiation performance of the antenna radiator 5; on the other hand, it also improves the overall strength of the antenna radiator 5 and the bottom wall 111, thereby increasing the overall resistance to deformation formed by the bottom wall 111 and the antenna radiator 5.

In some embodiments, as shown in FIG. 4 , the insulator 14 is integrated with the side wall 112 . In this way, on the one hand, the number of components of the mobile phone is reduced, and the assembly efficiency of the mobile phone is improved. On the other hand, the front case 11 does not need to provide a fixing structure for the insulating member 14 at the gap 55 , which is beneficial to simplify the structure of the front case 11 at the gap 55 .

The above-mentioned side wall 112 can be made of plastic material.

In some embodiments, as shown in FIG. 2 and FIG. 5, FIG. 5 is a cross-sectional view of B-B in FIG. 1, the above-mentioned antenna structure further includes an insulating filler 7 filled in the gap between the ground component 4 and the side wall 112, Along the circumferential direction of the bottom wall 111 , the insulating fillers 7 and the conductive fillers 6 are staggered. In this way, the insulating filling body 7 can prevent external water, impurities, etc. from entering the front shell 11 from the gap between the grounding component 4 and the side wall 112 to corrode the components in the front shell 11, thereby ensuring the normal operation of the mobile phone. At the same time, since the insulating filling body 7 and the conductive filling body 6 are staggered along the circumferential direction of the bottom wall 111, the insulating filling body 7 can also limit the conductive filling body 6 along the circumferential direction of the bottom wall 111. , so as to prevent the conductive filler 6 from shifting in the circumferential direction of the bottom wall 111 .

In some embodiments, as shown in FIG. 2 and FIG. 5 , the insulating filler 7 is a sealant. In this way, the sealant not only fills the gap between the grounding component 4 and the side wall 112 to seal the gap, but also can bond the grounding component 4 and the side wall 112, so that the grounding component 4 is in the front shell. The installation of the side wall 112 of 11 is more firm, avoiding shaking between the grounding component 4 and the antenna radiator 5 .

The above-mentioned sealant can be based on resin, wherein the resin can be epoxy resin, unsaturated polyester resin, phenolic resin, polyacrylic resin, polyvinyl chloride resin and the like.

Of course, the above-mentioned insulating filling body 7 may be not only a sealant, but also a rubber strip that plays a sealing role, or the like.

The above-mentioned mobile phone is a liquid crystal display device, and of course it is not limited thereto. The mobile phone can also be an OLED (Organic Light-Emitting Diode; Organic Light-Emitting Diode) display device, as shown in Figure 10. As for the schematic structural diagram of the mobile phone, FIG. 10 is only a schematic diagram, and each part is not shown according to the actual proportion of each part. The main difference between this embodiment and the embodiment shown in FIGS. 1-9 is that: the display panel 22 is an OLED display panel 22 , and the grounding component 4 is a metal support for supporting the OLED display panel.

By setting the metal support as the grounding part 4, the gap formed between the antenna radiator 5 and the grounding part 4 is located on the side of the grounding part 4, thereby facilitating the filling of the conductive filler 6 between the antenna radiator 5 and the grounding part 4 in the gap formed between.

Wherein, the metal supporting member may be a metal plate disposed on the back side of the OLED display panel 22 . The metal support plate can be supported by metal or metal alloy, such as iron, aluminum alloy and so on.

For other structures in this embodiment, specific reference may be made to the settings in the embodiment in FIGS. 1 to 9 , and details are not repeated here.

In the description of this specification, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in an appropriate manner.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

An antenna structure for terminal equipment, characterized in that it comprises:

A casing, the casing being the shell of the terminal device, including a bottom wall and a side wall arranged at the edge of the bottom wall;

a plurality of antenna radiators arranged at the edge of the bottom wall and arranged at intervals along the circumference of the bottom wall;

a ground component, disposed in the casing, and configured as a signal reference ground of the antenna radiator;

The conductive filler is filled in the gap between each of the antenna radiators and the ground component, and electrically connects each of the antenna radiators to the ground component.
The antenna structure according to claim 1, characterized in that,

The bottom wall includes two first edges located at opposite ends of the bottom wall, and the conductive fillers connected to each of the antenna radiators are located at the first edges.
The antenna structure according to claim 2, characterized in that,

The bottom wall also includes two second edges located at opposite ends of the bottom wall, the second edges are connected between the two first edges, and each of the second edges is connected to the adjacent said first edges form a corner where they meet;

The plurality of antenna radiators include a first antenna radiator disposed at the corner, and a second antenna radiator disposed at the first edge; a part of the first antenna radiator is located at the second On one edge, another part is located on the second edge, and the gap between the part of the first antenna radiator located on the second edge and the ground component is filled with the conductive filler.
The antenna structure according to claim 3, characterized in that,

There is a first antenna gap between the first antenna radiator and the second antenna radiator, the conductive filling body connected to the first antenna radiator, and the conductive filling body connected to the second antenna radiator The conductive fillers are all arranged at the first antenna gap.
The antenna structure according to claim 4, characterized in that,

The conductive filling body connected to the first antenna radiator and the conductive filling body connected to the second antenna radiator are of an integral structure.
The antenna structure according to any one of claims 3-5, characterized in that,

The first antenna radiator has a first feed point located at the second edge, and a first ground point located at the first edge, and the first ground point passes through the conductive filler and the The grounding part is electrically connected.
The antenna structure according to claim 6, characterized in that,

The first antenna radiator also has a second feed point located between the first feed point and the first ground point.
The antenna structure according to claim 6 or 7, characterized in that,

Each of the corners is provided with the first antenna radiator, at least two adjacent first antenna radiators have a second antenna gap at the second edge, and two phases The first feeding points of adjacent first antenna radiators are all set at the second antenna gap.
The antenna structure according to any one of claims 6-8, characterized in that,

Each of the corners is provided with the first antenna radiator, and the first antenna radiators located at two of the corners of the bottom wall are high-frequency antenna radiators, and the first antenna radiators located at the other corners of the bottom wall are The first antenna radiators at the two corners are low-frequency antenna radiators;

And/or, the second antenna radiator is a WIFI antenna radiator.
The antenna structure according to claim 9, characterized in that,

The first antenna radiators located at two opposite corners of the bottom wall are high-frequency antenna radiators, and the first antenna radiators located at the other two opposite corners of the bottom wall The body is a low-frequency antenna radiator.
The antenna structure according to claim 10, characterized in that,

The first antenna radiators located at the four corners of the bottom wall are respectively a first sub-radiator, a second sub-radiator, a third sub-radiator and a fourth sub-radiator, the first The sub-radiator and the third sub-radiator are low-frequency antenna radiators, the second sub-radiator and the fourth sub-radiator are high-frequency antenna radiators, and the second antenna radiator is located in the second sub-radiator. Between the radiator and the third sub-radiator;

The distance between the first feed point of the first sub-radiator and the first ground point is 40-50mm; the distance between the first feed point of the second sub-radiator and the The distance between the first grounding point is 30-40mm; the distance between the first feeding point of the third sub-radiator and the first grounding point is 30-40mm; the fourth The distance between the first feeding point of the sub-radiator and the first grounding point ranges from 20mm to 30mm.
The antenna structure according to any one of claims 9-11, characterized in that,

The second antenna radiator has a third feeding point and a second grounding point, the second grounding point is electrically connected to the grounding component through the conductive filler, the third feeding point is connected to the first The distance between the two grounding points ranges from 17 to 20 mm.
The antenna structure according to any one of claims 1-12, characterized in that,

Each of the antenna radiators is integral with the bottom wall.
The antenna structure according to claim 13, characterized in that,

There is a gap between each antenna radiator and the bottom wall.
The antenna structure according to claim 14, characterized in that,

The antenna structure further includes an insulator disposed in the slot.
The antenna structure according to claim 15, characterized in that,

The insulator is integrated with the side wall.
The antenna structure according to any one of claims 1-16, characterized in that,

The conductive filler is conductive glue.
The antenna structure according to any one of claims 1-17, characterized in that,

The resistance value of the conductive filler is less than or equal to 1Ω.
The antenna structure according to any one of claims 1-18, characterized in that,

The antenna structure further includes insulating fillers filled in the gap between the ground component and the side wall, and the insulating fillers and the conductive fillers are staggered along the circumferential direction of the bottom wall.
The antenna structure according to claim 19, characterized in that,

The insulating filler is sealant.
A terminal device, characterized by comprising the antenna structure according to any one of claims 1-20.
The terminal device according to claim 21, characterized in that,

The terminal device is a liquid crystal display device, the liquid crystal display device includes a backlight, and a metal backplane for carrying the backlight, and the metal backplane is the grounding component;

Alternatively, the terminal device is an OLED display device, and the OLED display device includes a display panel and a metal support for supporting the display panel, and the metal support is the grounding component.
The antenna structure according to claim 6, characterized in that,

Each of the corners is provided with the first antenna radiator, at least two adjacent first antenna radiators have a second antenna gap at the second edge, and two phases The first feeding points of adjacent first antenna radiators are all set at the second antenna gap.
The antenna structure according to claim 6, characterized in that,

Each of the corners is provided with the first antenna radiator, and the first antenna radiators located at two of the corners of the bottom wall are high-frequency antenna radiators, and the first antenna radiators located at the other corners of the bottom wall are The first antenna radiators at the two corners are low-frequency antenna radiators; and/or, the second antenna radiators are WIFI antenna radiators.
The antenna structure according to claim 24, characterized in that,

The first antenna radiators located at two opposite corners of the bottom wall are high-frequency antenna radiators, and the first antenna radiators located at the other two opposite corners of the bottom wall The body is a low-frequency antenna radiator.
The antenna structure according to claim 25, characterized in that,

The first antenna radiators located at the four corners of the bottom wall are respectively a first sub-radiator, a second sub-radiator, a third sub-radiator and a fourth sub-radiator, the first The sub-radiator and the third sub-radiator are low-frequency antenna radiators, the second sub-radiator and the fourth sub-radiator are high-frequency antenna radiators, and the second antenna radiator is located in the second sub-radiator. Between the radiator and the third sub-radiator;

The distance between the first feed point of the first sub-radiator and the first ground point is 40-50mm; the distance between the first feed point of the second sub-radiator and the The distance between the first grounding point is 30-40mm; the distance between the first feeding point of the third sub-radiator and the first grounding point is 30-40mm; the fourth The distance between the first feeding point of the sub-radiator and the first grounding point ranges from 20mm to 30mm.
The antenna structure according to claim 24, characterized in that,

The second antenna radiator has a third feeding point and a second grounding point, the second grounding point is electrically connected to the grounding component through the conductive filler, the third feeding point is connected to the first The distance between the two grounding points ranges from 17 to 20 mm.
The antenna structure according to any one of claims 1-5, characterized in that,

Each of the antenna radiators is integral with the bottom wall.
The antenna structure according to claim 28, characterized in that,

There is a gap between each antenna radiator and the bottom wall.
An antenna structure according to claim 29, characterized in that,

The antenna structure further includes an insulator disposed in the slot.
The antenna structure according to claim 30, characterized in that,

The insulator is integrated with the side wall.
The antenna structure according to any one of claims 1-5, characterized in that,

The conductive filler is conductive glue.
The antenna structure according to any one of claims 1-5, characterized in that,

The resistance value of the conductive filler is less than or equal to 1Ω.
The antenna structure according to any one of claims 1-5, characterized in that,

The antenna structure further includes insulating fillers filled in the gap between the ground component and the side wall, and the insulating fillers and the conductive fillers are staggered along the circumferential direction of the bottom wall.
An antenna structure according to claim 34, characterized in that,

The insulating filler is sealant.
A terminal device, characterized by comprising the antenna structure according to any one of claims 1-7, 23-35.
The terminal device according to claim 36, characterized in that,

The terminal device is a liquid crystal display device, the liquid crystal display device includes a backlight, and a metal backplane for carrying the backlight, and the metal backplane is the grounding component;

Alternatively, the terminal device is an OLED display device, and the OLED display device includes a display panel and a metal support for supporting the display panel, and the metal support is the grounding component.