CN113497348B - An antenna structure and terminal equipment - Google Patents

Abstract

The present application discloses an antenna structure and a terminal device, relates to the technical field of antenna structures, and is invented to solve the problems in the related art that the grounding structure of the antenna is complex and the cost is high. The antenna structure includes a casing, a plurality of antenna radiators, a ground component and a conductive filler, the casing is a casing of the terminal device, and includes a bottom wall and a side disposed at the edge of the bottom wall a wall, a plurality of antenna radiators are arranged at the edge of the bottom wall and are spaced apart along the circumference of the bottom wall, the grounding member is arranged in the housing, and is configured as a signal of the antenna radiator Reference ground; a conductive filler is filled in the gap between each of the antenna radiators and the grounding part, and electrically connects each of the antenna radiators and the grounding part. This application can be used in terminal devices such as mobile phones.

Description

An antenna structure and terminal equipment

technical field

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

Background technique

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

In a terminal device in the related art, the grounding method of the antenna is to connect to the signal reference ground of the antenna through a conductive shrapnel. However, such a grounding method requires a mounting structure for fixing the conductive shrapnel between the antenna and the signal reference ground. , which makes the grounding structure of the antenna more complex and the cost is higher.

SUMMARY 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 complex and the cost is high.

To achieve the above object, the embodiments of the present application adopt the following technical solutions:

In a first aspect, an embodiment of the present application provides an antenna structure for a terminal device, including a casing, a ground component, a conductive filler, and a plurality of antenna radiators, where the casing is a casing of the terminal device, It comprises 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 are spaced apart along the circumference of the bottom wall; the ground component is arranged on the shell and is configured as the signal reference ground of the antenna radiator; a conductive filler is filled in the gap between each of the antenna radiators and the grounding member, connecting each of the antenna radiators to the ground component. The ground component is electrically connected.

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

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

By adopting the above solution, in this way, the interference between the conductive filler and the devices disposed at other edges of the bottom wall can be avoided.

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, the other 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 A gap of the ground member 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, and the conductive filler and the second antenna are connected to the first antenna radiator. The conductive fillers to which the radiator is connected are all disposed at the first antenna gap.

By adopting the above solution, the arrangement of the conductive filler can be facilitated, which is beneficial to improve the efficiency of the arrangement of the conductive filler.

In some embodiments, the conductive filler to which the first antenna radiator is connected and the conductive filler to which the second antenna radiator is connected are integral 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 at the second edge, and a first ground point at the first edge, the first ground point passing through the The conductive filler is electrically connected to the ground member.

By adopting the above solution, the clutter generated by the antenna radiator when the distance between the first feeding point and the first grounding point is too close 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 during the operation of the electronic device can be reduced.

In some embodiments, the first antenna radiator is disposed at each of the corners, and a second antenna is disposed at the second edge between at least two adjacent first antenna radiators gaps, and the first feeding points of two adjacent first antenna radiators are both disposed at the second antenna gaps.

By adopting the above solution, the layout of the multiple antenna radiators is optimized in this way, so that the multiple 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 the two 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 solution, the mobile phone can send and receive both low-frequency signals and high-frequency signals, so that the mobile phone's requirements for sending and receiving high-frequency and low-frequency signals can be met.

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

By adopting the above solution, the mobile phone can receive WIFI signals to meet the requirements of the mobile phone for Internet access and data transmission.

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 are high-frequency antenna radiators. The first antenna radiator is a low frequency antenna radiator.

By adopting the above solution, on the one hand, the mutual interference of signals generated when the two low-frequency/high-frequency antenna radiators are close together can be avoided, and on the other hand, the overlap of the radiation areas of the two low-frequency/high-frequency antenna radiators can be reduced, so that the 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 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 feeding point of the first sub-radiator and the first ground point ranges from 40 to 50 mm ; the distance between the first feeding point of the second sub-radiator and the first ground point is in the range of 30 to 40 mm; the first feeding point of the third sub-radiator and the The distance between the first grounding points is in the range of 30-40 mm; the distance between the first feeding point of the fourth sub-radiator and the first grounding point is in the range of 20-30 mm.

By adopting the above solution, the clutter generated by the first antenna radiator can be minimized, and the first antenna radiator can normally send and receive signals.

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 member through the conductive filler, and the third feed point The distance between the electrical point and the second ground point is in the range of 17-20 mm.

By adopting the above solution, the clutter generated by the second antenna radiator can be minimized, and the second antenna radiator can normally send and receive signals.

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

By adopting the above solution, the number of parts and components of the terminal device is greatly reduced, which is beneficial to improve the assembly efficiency of the terminal device.

In some embodiments, each of the antenna radiators and the bottom wall has a gap.

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 insulating member disposed in the slot.

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

In some embodiments, the insulating member and the sidewall are integral structures.

By adopting the above solution, on the one hand, the number of components of the terminal device is reduced, and the assembly efficiency of the terminal device 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 value of the conductive filler is less than or equal to 1Ω.

By adopting the above solution, the obstruction of the ground current of the antenna radiator by the conductive filler can be reduced, which is beneficial to reduce the power consumption of the terminal device by the conductive filler.

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

By adopting the above solution, the insulating filler can prevent water and impurities from the outside from entering the housing from the gap between the grounding part and the side wall to corrode the components in the housing, and the insulating filler can also play a certain role in the conductive filler. Limiting effect, thereby preventing the conductive filler from shifting in the circumferential direction of the bottom wall.

In some embodiments, the insulating filler is sealant.

By adopting the above solution, the sealant not only fills the gap between the grounding part and the side wall to seal the gap, but also can bond the grounding part and the side wall, so that the grounding part is in the front case. 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, which are not repeated here.

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

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

Description of drawings

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

Fig. 2 is an exploded view 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 the structural diagram of Fig. 6;

8 is a schematic structural diagram of the bottom wall and a plurality of antenna radiators in FIG. 6 from a viewing angle;

FIG. 9 is a schematic structural diagram of the bottom wall and a plurality of antenna radiators in FIG. 6 from 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 only used for description purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature.

In the embodiments of the present application, it should be noted that the term "electrical connection" should be understood in a broad sense, for example, current conduction may be achieved by direct connection, or electric energy conduction may be achieved by 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 control, a POS (point of sales terminal; point of sales information management system) machine, a notebook computer, a personal digital assistant (personal digital assistant) assistant, PDA), in-vehicle equipment, Internet TV and other terminal equipment with antenna structure.

The following takes a mobile phone as an example to describe the antenna structure of the terminal device in the embodiments of the present application. Other types of terminal devices may be set with reference to the design concept of the antenna structure in the mobile phone embodiment, which 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 application, Figure 2 is an exploded view of the mobile phone in Figure 1, Figure 3 is a schematic structure of the mobile phone in Figure 1 Figure 3 is only a schematic diagram in which the various parts are not shown according to the actual scale of the various parts. 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. The antenna structure includes a casing 1 , a ground component 4 , a conductive filler 6 , and a plurality of antenna radiators 5 . .

As shown in FIGS. 3 and 4 , FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1 . The casing 1 is the outer casing of the mobile phone. The casing 1 includes a front casing 11 (also known as a middle frame) and a back cover 12 (also known as a battery cover). The front casing 11 includes a bottom wall 111 and a bottom wall 111 . side wall 112 at the location. 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 accommodation space 13, which can be used to accommodate the mainboard 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 spaced apart along the circumference of the bottom wall 111 , and the grounding member 4 is a metal back plate disposed in the front case 11 , and the metal back plate is configured as an antenna radiator 5's signal reference ground. By setting the metal back plate as the ground member 4, the gap formed between the antenna radiator 5 and the metal back plate is located at the side of the metal back plate, so that the conductive filler 6 can be easily filled between the antenna radiator 5 and the metal back plate. in the gap formed between.

The metal back plate encloses an accommodating cavity 41 , and the backlight source 3 is arranged in the accommodating cavity 41 . The backlight source 3 includes a light-emitting source 31 and a light guide plate 32. The light-emitting source 31 and the side of the light guide plate 32 are arranged opposite to each other. light needs.

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

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

The optical film 23 is disposed on the light-emitting side of the light guide plate 32 , and the optical film 23 includes a diffuser sheet, a prism sheet, and the like, 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 is used to protect the display panel 22 .

As shown in FIG. 2 and FIG. 4 , the edges of the cover plate 21 are bonded to the side wall 112 by 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 interior of the front case 11 .

As shown in FIGS. 3 and 4 , the conductive filler 6 is filled in the gap between each antenna radiator 5 and the ground member 4 to electrically connect each antenna radiator 5 and the ground member 4 . Compared with the way of realizing grounding through shrapnel, the grounding is realized through the conductive filler 6. On the one hand, the conductive filler 6 makes full use of the gap between the antenna radiator 5 and the grounding component 4, and does not need to additionally 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 components in the casing 1 and make the mobile phone thinner. On the other hand, if the grounding is realized by the conductive filler 6, there is no need to set the shrapnel and its installation structure between the antenna radiator 5 and the grounding component 4, which greatly simplifies the antenna structure and helps to reduce the cost of the mobile phone.

In some embodiments, as shown in FIG. 3 , the conductive filler 6 may be conductive glue, so that the conductive glue can not only electrically connect the antenna radiator 5 and the grounding member 4 , but also serve to connect the antenna radiator 5 and the grounding member. 4 is bonded, so that the grounding member 4 is more firmly installed in the front case 11, and the shaking between the grounding member 4 and the antenna radiator 5 can lead to poor contact between the conductive filler 6 and the grounding member 4.

In some embodiments, the resistance value of the conductive filler 6 is less than or equal to 1Ω. In this way, the conductive filler 6 with smaller resistance can reduce the obstruction of the conductive filler 6 to the ground current of the antenna radiator 5, and not only ensure the smooth electrical connection between the antenna radiator 5 and the ground component 4, so as to smoothly realize the antenna radiator 5 is grounded, and is beneficial to reduce the power consumption of the mobile phone by the conductive filler 6, thereby helping to improve the standby time of the mobile phone.

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 powders of gold, silver, copper, aluminum, zinc, iron, nickel and graphite and some conductive compounds.

Of course, in addition to the conductive glue, the conductive filler 6 may also be a filler such as conductive foam, conductive rubber, conductive silicone, etc., which may be determined according to actual conditions.

In some embodiments, as shown in FIGS. 6 and 7 , FIG. 6 is a schematic diagram of the positional relationship between the antenna radiator 5 of the mobile phone and the bottom wall 111 of the front case 11 in some embodiments of the present application, and FIG. Schematic diagram of the structure, which is only 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 . The number of antenna radiators 5 is multiple and spaced along the circumference of the bottom wall 111 , and the gap between each antenna radiator 5 and the grounding member 4 is filled with a conductive filler 6 .

By arranging multiple antenna radiators 5 along the circumference of the bottom wall 111 , the multiple antenna radiators 5 can make full use of the space resources of the front case 11 of the mobile phone, and communication signals can be transmitted and received through the multiple antenna radiators 5 . Therefore, the communication quality can be improved, and the system channel capacity can be doubled without increasing the spectrum resources and the transmit 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 substantially 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 . The two edges 114 and the second edges 114 are connected between the two first edges 113 , and each second edge 114 and the adjacent first edge 113 form a corner where they meet.

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

In some embodiments, as shown in FIGS. 6 and 7 , the conductive filler 6 to which each antenna radiator 5 is connected is located at the first edge 113 . By arranging the conductive filler 6 at the first edge 113, the conductive filler 6 can be prevented from interfering with the devices arranged at other edges of the bottom wall 111. For example, as shown in FIG. 6 and FIG. 7, the display panel 22 is connected to The flexible circuit board is usually bent at the second edge 114 located on the lower side of the bottom wall 111 to the back side of the bottom wall 111 and connected to the main board 24 , if the conductive filler 6 is arranged at the second edge 114 on the lower side of the bottom wall 111 , then the conductive filler 6 is likely to interfere with the flexible circuit board connected to the display panel 22 , and the conductive filler 6 is arranged at the first edge 113 to avoid interference between the conductive filler 6 and the above-mentioned flexible circuit board.

In order to ensure that the conductive filler 6 connected to each antenna radiator 5 is located at the first edge 113, the layout of the multiple antenna radiators 5 is not unique. In some embodiments, as shown in FIG. 6 and FIG. 7 , the plurality of antenna radiators 5 include a first antenna radiator 51 arranged at the corner 115 and a second antenna radiator 52 arranged at the first edge 113; a part of the first antenna radiator 51 is located at the first edge 113 The other 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 ground member 4 is filled with the conductive filler 6 .

Through the above-mentioned layout of the antenna radiator 5, the antenna radiator 5 can not only utilize the space at the first edge 113, but also make full use of 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 transmit and receive signals, so as to improve the quality of communication.

Of course, in addition to the above 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 filler 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 positions of the conductive fillers 6 connected to the first antenna radiator 51 and the second antenna radiator 52 on the edge of the bottom wall 111 are relatively close, so there is no need to move the positions to set the conductive fillers 6, so that the The arrangement of the conductive filler 6 is facilitated, and the efficiency of the arrangement of the conductive filler 6 is improved.

In some embodiments, as shown in FIG. 7 , the conductive filler 6 connected to the first antenna radiator 51 and the conductive filler 6 connected to the second antenna radiator 52 are integral structures, that is, the first antenna radiates The conductive filler 6 connected to the body 51 and the conductive filler 6 connected to the second antenna radiator 52 are the same conductive filler 6 . In this way, the first antenna radiator 51 and the second antenna radiator 52 can be grounded through one conductive filler 6, and the number of the conductive fillers 6 can be saved. In this process, the first antenna radiator 51 and the second antenna radiator 52 can be grounded, which saves the time for arranging the conductive filler 6 and further improves the installation efficiency of the conductive filler 6 .

In some embodiments, as shown in FIGS. 6 and 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 member 4 through the conductive filler 6 .

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

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

In this way, when there are many electronic devices disposed at the second edge 114 of the bottom wall 111, for example, as shown in FIG. 6 and FIG. The plurality of electronic devices are relatively close to the second antenna radiator 52, and a second feeding point is added by adding the second antenna radiator 51 (that is, the second antenna radiator 51a and the second antenna radiator 51b) here. 513 can increase the number of feeding points on the first antenna radiator 51 to improve the signal strength on the first antenna radiator 51, so as to improve the anti-interference performance of the first antenna radiator 51 and reduce the impact on the second antenna when the electronic device is working. The antenna radiator 52 transmits the interference of the signal.

In some embodiments, as shown in FIGS. 6 and 7 , each corner 115 is provided with a first antenna radiator 51 , and the first antenna radiators 51 located at the four corners 115 of the bottom wall 111 are respectively the first antenna radiators 51 . A sub-radiator 51a, a second sub-radiator 51b, a third sub-radiator 51c, and a fourth sub-radiator 51d. With this arrangement, 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.

The second feeding point 513 may be set at the first edge 113 or at the second edge 114. For example, as shown in FIG. 6 and FIG. 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 position of the second feeding point 513 may be determined according to the actual situation, as long as the distance between the second feeding point 513 and the first grounding point 512 can be ensured 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 disposed adjacent to each other, and the second sub-radiator 51a and the second sub-radiator 51b are located between the first and second sub-radiators 51a and 51b. The edge 114 has a second antenna gap 54 , and the first feeding points 511 of the first sub-radiator 51 a and the second sub-radiator 51 b are both disposed at the second antenna gap 54 .

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

In addition, in the mobile phone, the main board is usually disposed close to the second edge 114, and the first feeding point 511 of the first sub-radiator 51a and the second sub-radiator 51b is disposed at the second antenna gap 54, so that the first sub-radiator 51a and the first feeding point 511 of the second sub-radiator 51b The first feeding points 511 of the radiator 51a and the second sub-radiator 51b are both close to the main board, which is also convenient for the main board to feed 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 to the other two adjacent third sub-radiators 51c and the fourth sub-radiator 51d.

The widths of the above-mentioned first antenna gap 53 and second antenna gap 54 are 1 mm, but are not limited to this, 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 FIGS. 6 and 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 may be between 1.7GHZ and 2.7GHZ, and the frequency band of the signals transmitted and received by the first sub-radiator 51a and the third sub-radiator 51c may be in the 700MHZ-960MHZ.

By setting in this way, the mobile phone can send and receive both low-frequency signals and high-frequency signals, so that the mobile phone can meet the sending and receiving requirements of high-frequency and low-frequency signals.

In some embodiments, as shown in FIGS. 6 and 7 , the first antenna radiators 51 located at two opposite corners 115 of the bottom wall 111 are high-frequency antenna radiators, and the other two opposite corners 115 of the bottom wall 111 are high-frequency antenna radiators. 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 located at the other two opposite corners 115 of the bottom wall 111, respectively. 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 the two high-frequency antenna radiators (that is, the second sub-radiator 51b and the fourth sub-radiator 51d) are arranged at the two adjacent corners 115, two high-frequency antenna radiators are arranged At the two opposite corners 115, the distance between the two high-frequency antenna radiators is relatively far, on the one hand, it can avoid the mutual interference of high-frequency signals generated when the two high-frequency antenna radiators are close to each other, and on the other hand On the one hand, the overlap 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.

Likewise, disposing the two low-frequency antenna radiators at the Two opposite corners 115, so that the two low-frequency antenna radiators are far apart in space. On the one hand, it can avoid the mutual interference of low-frequency signals generated when the two low-frequency antenna radiators are close to each other. The overlap of the radiation areas of the two low-frequency antenna radiators is reduced, so that the range of the radiation areas of the two low-frequency antenna radiators can be increased.

In some embodiments, as shown in FIGS. 6 and 7 , the second antenna radiator 52 is a WIFI (Wireless-Fidelity; wireless network) antenna radiator. With this setting, the mobile phone can receive WIFI signals to meet the requirements of the mobile phone for Internet access and data transmission.

The frequency band in which the second antenna radiator 52 receives the WIFI signal may be between 2.4GHz and 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, people's hands are held at the upper and lower ends of the mobile phone; for example, when making a call, people's hands are held at the lower end of the mobile phone. The hand will block the position of the corner 115 to a certain extent, and arranging the second antenna radiator 52 at the first edge 113 can reduce the influence of the blocking of the hand on the second antenna radiator 52 receiving WIFI signals.

It should be noted that: since the signals transmitted and received by the first sub-radiator 51a and the third sub-radiator 51c are low-frequency signals, the low-frequency signals have longer wavelengths and stronger diffraction capabilities, so when a person holds the mobile phone, the hand pair is set at the corner. The influence of the transceiving signals of the first sub-radiator 51a and the third sub-radiator 51c at 115 is small. Since the second sub-radiator 51b and the fourth sub-radiator 51d are located at the two corners 115, they can transmit and receive high-frequency signals at different positions, and the ability to transmit and receive signals is strong. The influence of the transmission and reception signals of the second sub-radiator 51b and the fourth sub-radiator 51d is also relatively small.

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

Through the above arrangement, the distance between the first feeding point 511 of the first antenna radiator 51 and the first ground point 512 can be better avoided, so that the clutter generated by the first antenna radiator 51 can be minimized and the first An antenna radiator 51 transmits and receives signals normally.

In some embodiments, as shown in FIGS. 6 and 7 , the second antenna radiator 52 has a third feeding point 521 and a second grounding point 522 , and the second grounding point 522 is electrically connected to the grounding 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 arrangement, the distance between the third feeding point 521 and the second grounding point 522 of the second antenna radiator 52 can be better avoided, so that the clutter generated by the second antenna radiator 52 can be minimized and the first The two antenna radiators 52 send and receive 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 transmitted and received signals. 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 low-frequency antenna radiator is greater than the length of the high-frequency antenna radiator. The distance range between the first feeding point 511 of the radiator 51a and the third sub-radiator 51c and the first ground point 512 is larger, and the first feeding point of the second sub-radiator 51b and the fourth sub-radiator 51d The distance range between the point 511 and the first ground 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 integral structures. In this way, each antenna radiator 5 and the bottom wall 111 are integrated, that is, the antenna formed by the above-mentioned antenna radiator 5 is an MDA (Mode decoration antenna), which greatly reduces the number of parts of the mobile phone. It is beneficial to improve the assembly efficiency of the mobile phone.

The above-mentioned 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 schematic structural diagrams of the bottom wall 111 and the plurality of antenna radiators 5 in FIG. 6 under different viewing angles. Each of the antenna radiators 5 and the bottom wall 111 has a gap 55 therebetween. By setting the slot 55 , a capacitance is formed between the antenna radiator 5 and the bottom wall 111 , and the antenna is clear at the slot 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 insulating member 14 , and the insulating member 14 is disposed in the slot 55 . By arranging the insulating member 14 in the slot 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 of the bottom wall 111 and the antenna radiator 5.

In some embodiments, as shown in FIG. 4 , the insulating member 14 and the sidewall 112 are integrally formed. 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 be provided with a fixing structure of the insulating member 14 at the gap 55 , thereby facilitating the simplification of the structure of the front case 11 at the gap 55 .

The side wall 112 can be made of plastic material.

In some embodiments, as shown in FIG. 2 and FIG. 5 , and FIG. 5 is a cross-sectional view taken along the line 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 filler 7 can prevent external water, impurities, etc. from entering the front case 11 from the gap between the grounding member 4 and the side wall 112 to corrode the components in the front case 11, thereby ensuring the normal operation of the mobile phone. At the same time, since the insulating fillers 7 and the conductive fillers 6 are staggered along the circumference of the bottom wall 111 , the insulating fillers 7 can also limit the position of the conductive fillers 6 along the circumference of the bottom wall 111 . , thereby preventing the conductive filler 6 from being displaced in the circumferential direction of the bottom wall 111 .

In some embodiments, as shown in FIGS. 2 and 5 , the insulating filler 7 is a sealant. In this way, the sealant not only fills the gap between the grounding member 4 and the side wall 112 to seal the gap, but also serves to bond the grounding member 4 and the side wall 112 , so that the grounding member 4 is in the front case. The installation of the side wall 112 of the 11 is firmer to avoid 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 filler 7 may be not only a sealant, but also a rubber strip or the like that plays a sealing role.

The above-mentioned mobile phone is a liquid crystal display device, of course, it is not limited to this, the mobile phone can also be an OLED (Organic Light-Emitting Diode; Organic Light Emitting Diode) display device, as shown in FIG. 10 , which is a mobile phone in other embodiments of the application. 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 to 9 is that the display panel 22 is an OLED display panel 22 , and the grounding member 4 is a metal support for supporting the OLED display panel.

By setting the metal support as the grounding member 4 , the gap formed between the antenna radiator 5 and the grounding member 4 is located in the lateral direction of the grounding member 4 , so that the conductive filler 6 can be easily filled between the antenna radiator 5 and the grounding member 4 . in the gap formed between.

The metal support 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, etc.

For other structures in this embodiment, specific reference may be made to the settings in the embodiments of FIG. 1 to FIG. 9 , which will not be repeated here.

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

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit 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 be Modifications are made to the technical solutions recorded in the foregoing embodiments, or some technical features thereof are equivalently replaced; 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 embodiments of the present application.

Claims (22)

1. An antenna structure for terminal equipment, characterized in that, comprising: a casing, which is an outer casing of the terminal device, comprising a bottom wall and a side wall disposed 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 housing, and configured as a signal reference ground for the antenna radiator; A conductive filler is filled in the gap between each of the antenna radiators and the ground member, and electrically connects each of the antenna radiators and the ground member. 2. The antenna structure according to claim 1, wherein, The bottom wall includes two first edges located at opposite ends of the bottom wall, and the conductive fillers to which each of the antenna radiators is connected are located at the first edges. 3. The antenna structure according to claim 2, wherein, The bottom wall also includes two second edges located at opposite ends of the bottom wall, and the second edges are connected to the two between the first edges, and each of the second edges and the adjacent first edges form a corner at the junction; 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 portion of the first antenna radiator is located in the first antenna radiator. One edge is located at the second edge, and the other part is located at the second edge, and the conductive filler is filled in the gap between the part of the first antenna radiator located at the second edge and the ground member. 4. 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 filler to which the first antenna radiator is connected, and the The conductive fillers are all disposed at the first antenna gap. 5. The antenna structure according to claim 4, wherein, The conductive filler to which the first antenna radiator is connected and the conductive filler to which the second antenna radiator is connected are integral structures. 6. The antenna structure according to any one of claims 3 to 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, the first ground point is connected to the conductive filler through the conductive filler. The ground component is electrically connected. 7. The antenna structure according to claim 6, wherein, The first antenna radiator also has a second feed point located between the first feed point and the first ground point. 8. The antenna structure according to claim 6, wherein, 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 the two phase The first feeding points of the adjacent first antenna radiators are all disposed at the second antenna gaps. 9. The antenna structure according to claim 6, wherein, Each of the corners is provided with the first antenna radiator, and the first antenna radiators located on the bottom wall are high-frequency antenna radiators located at two of the corners, and the first antenna radiators located on the bottom wall are also high-frequency antenna radiators. The first antenna radiators at the two corners are low frequency antenna radiators; and/or the second antenna radiators are WIFI antenna radiators. 10. The antenna structure according to claim 9, wherein, 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 radiate The body is a low frequency antenna radiator. 11. The antenna structure according to claim 10, wherein, 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 sub-radiator 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 feeding point of the first sub-radiator and the first ground point is in the range of 40 to 50 mm; the first feeding point of the second sub-radiator is in the range of 40-50 mm; The distance between the first ground points is in the range of 30-40mm; the distance between the first feed point of the third sub-radiator and the first ground point is in the range of 30-40mm; the fourth sub-radiator The distance between the first feeding point of the sub-radiator and the first grounding point ranges from 20 to 30 mm. 12. The antenna structure according to claim 9, wherein, The second antenna radiator has a third feeding point and a second grounding point, the second grounding point is electrically connected to the grounding member through the conductive filler, and the third feeding point is connected to the first grounding point. The distance between the two grounding points ranges from 17 to 20 mm. 13. The antenna structure according to any one of claims 1 to 5, wherein: Each of the antenna radiators and the bottom wall is an integral structure. 14. The antenna structure according to claim 13, wherein, A gap is formed between each of the antenna radiators and the bottom wall. 15. The antenna structure according to claim 14, wherein, The antenna structure further includes an insulating member, and the insulating member is disposed in the slot. 16. The antenna structure according to claim 15, wherein, The insulating member and the side wall are integral structures. 17. The antenna structure according to any one of claims 1 to 5, wherein: The conductive filler is conductive glue. 18. The antenna structure according to any one of claims 1 to 5, wherein: The resistance value of the conductive filler is less than or equal to 1Ω. 19. The antenna structure according to any one of claims 1 to 5, wherein: The antenna structure further includes an insulating filling body filled in the gap between the ground member and the side wall, and the insulating filling body and the conductive filling body are arranged staggered along the circumferential direction of the bottom wall. 20. The antenna structure according to claim 19, wherein, The insulating filler is sealant. 21. A terminal device, characterized by comprising the antenna structure according to any one of claims 1-20. 22. The terminal device according to claim 21, wherein, The terminal device is a liquid crystal display device, and the liquid crystal display device includes a backlight source and a metal backplane for carrying the backlight source, and the metal backplane is the ground component; Alternatively, the terminal device is an OLED display device, and the OLED display device includes a display panel and a metal support member for supporting the display panel, and the metal support member is the ground member.

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