CN113497348B

CN113497348B - Antenna structure and terminal equipment

Info

Publication number: CN113497348B
Application number: CN202110658163.9A
Authority: CN
Inventors: 万伟舰; 罗永清; 付斯林
Original assignee: Honor Device Co Ltd
Current assignee: Shenzhen Glory Intelligent Machine Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-05-10
Anticipated expiration: 2041-06-10
Also published as: WO2022257668A1; CN113497348A

Abstract

The application discloses an antenna structure and terminal equipment, relates to the technical field of antenna structures, and aims to solve the problems that the grounding structure of an antenna in the related art is complex and the cost is high. The antenna structure comprises a shell, a plurality of antenna radiators, a grounding part and a conductive filling body, wherein the shell is a shell of the terminal device and comprises a bottom wall and a side wall arranged at the edge of the bottom wall, the plurality of antenna radiators are arranged at the edge of the bottom wall and are distributed at intervals along the circumferential direction of the bottom wall, and the grounding part is arranged in the shell and is configured as a signal reference ground of the antenna radiators; and the conductive filling body is filled in a gap between each antenna radiator and the grounding part to electrically connect each antenna radiator and the grounding part. The method and the device can be used for terminal equipment such as mobile phones.

Description

Antenna structure and terminal equipment

Technical Field

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

Background

An antenna is disposed in a terminal device such as a mobile phone for receiving and transmitting radio frequency signals to communicate with the outside, and the antenna usually needs to be grounded, so how to design the grounding of the antenna becomes an important issue in the industry.

In a terminal device in the related art, the grounding mode of the antenna is connected to the signal reference ground of the antenna through a conductive elastic sheet, however, the grounding mode needs to provide a mounting structure for fixing the conductive elastic sheet between the antenna and the signal reference ground, which makes the grounding structure of the antenna relatively complex and relatively high in cost.

Disclosure of Invention

The embodiment of the application provides an antenna structure and terminal equipment, and is used for solving the problems that the grounding structure of an antenna in the related art is complex and the cost is high.

In order to achieve the above purpose, the embodiment of the present application adopts 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 housing of the terminal device, and includes a bottom wall and a side wall disposed at an edge of the bottom wall; the plurality of antenna radiators are arranged at the edge of the bottom wall and are distributed at intervals along the circumferential direction of the bottom wall; the grounding part is arranged in the shell and is configured as a signal reference ground of the antenna radiator; and the conductive filling body is filled in a gap between each antenna radiator and the grounding part to electrically connect each antenna radiator and the grounding part.

Through adopting above-mentioned scheme, the electrically conductive obturator need not additionally to occupy other spaces in the casing like this, especially along the space on the thickness direction of diapire in the casing, can optimize the overall arrangement of casing internal component like this, makes terminal equipment do thinner. Meanwhile, the grounding is realized through the conductive filling body, so that the antenna structure can be greatly simplified, and the cost of the terminal equipment is favorably reduced.

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

By adopting the scheme, the conductive filling body can be prevented from interfering with devices arranged at other edges of the bottom wall.

In some embodiments, the bottom wall further comprises two second edges at two opposite ends of the bottom wall, the second edges are connected between the two first edges, and each second edge forms a corner with the adjacent first edge at the joint; the plurality of antenna radiators comprise a first antenna radiator arranged at the corner and a second antenna radiator arranged at the first edge; the first antenna radiator has a portion located at the first edge and another portion located at the second edge, and a gap between the portion of the first antenna radiator located at the second edge and the ground member is filled with the conductive filler.

By adopting the scheme, the antenna radiating body can not only utilize the space at the first edge, but also fully utilize the space at the second edge, thereby optimizing the layout of the plurality of antenna radiating bodies.

In some embodiments, a first antenna gap is formed between the first antenna radiator and the second antenna radiator, and the conductive filler connected to the first antenna radiator and the conductive filler connected to the second antenna radiator are disposed at the first antenna gap.

By adopting the above scheme, the setting of the conductive filling body can be facilitated, and the efficiency of the setting of the conductive filling body is improved.

In some embodiments, the conductive filler connected to the first antenna radiator and the conductive filler connected to the second antenna radiator are of a unitary structure.

By adopting the scheme, the arrangement efficiency of the conductive filling body can be further improved.

In some embodiments, the first antenna radiator has a first feeding point at the second edge, and a first grounding point at the first edge, the first grounding point being electrically connected to the grounding member through the conductive filler.

By adopting the scheme, the noise wave 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 scheme, the interference of the electronic device on the signal transmitted by the second antenna radiator during working can be reduced.

In some embodiments, 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 first feeding points of two adjacent first antenna radiators are both disposed at the second antenna gap.

By adopting the scheme, the layout of the plurality of antenna radiators is optimized, so that the plurality of second antenna radiators can better transmit and receive signals, and the communication quality is improved.

In some embodiments, each of the corners is provided with the first antenna radiator, 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 two corners of the bottom wall are low-frequency antenna radiators.

By adopting the scheme, the mobile phone can receive and transmit low-frequency signals and high-frequency signals, so that the receiving and transmitting requirements of the mobile phone on high-frequency and low-frequency signals can be met.

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

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

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

By adopting the scheme, on one hand, the mutual interference of signals generated when the two low-frequency/high-frequency antenna radiators are close to each other can be avoided, and on the other hand, the overlapping of the radiation areas of the two low-frequency/high-frequency antenna radiators can be reduced, so that the range of the radiation areas of the two low-frequency/high-frequency antenna radiators can be enlarged.

In some embodiments, the first antenna radiators at the four corners of the bottom wall are a first sub-radiator, a second sub-radiator, a third sub-radiator and a fourth sub-radiator, respectively, 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 radiator is located between the second sub-radiator and the third sub-radiator; the distance between the first feed point and the first grounding point of the first sub-radiator is 40-50 mm; the distance between the first feed point and the first grounding point of the second sub-radiator is 30-40 mm; the distance between the first feed point and the first grounding point of the third sub-radiator is 30-40 mm; the distance between the first feed point and the first grounding point of the fourth sub-radiator is 20-30 mm.

Through adopting above-mentioned scheme to can furthest reduce first antenna radiator and produce the clutter, guarantee that first antenna radiator normally receives and dispatches the signal.

In some embodiments, 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 a distance between the third feeding point and the second grounding point ranges from 17 mm to 20 mm.

By adopting the scheme, the second antenna radiator can be reduced to the maximum extent to generate clutter, and the second antenna radiator can be ensured to normally transmit and receive signals.

In some embodiments, each of the antenna radiators and the bottom wall are of a unitary structure.

By adopting the scheme, the number of parts of the terminal equipment is greatly reduced, and the assembly efficiency of the terminal equipment is improved.

In some embodiments, each of the antenna radiators has a slot between the bottom wall and the antenna radiator.

By adopting the scheme, potential difference can be formed between the antenna radiator and the bottom wall, and the radiation performance of the antenna radiator can be further enhanced.

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

By adopting the scheme, the radiation performance of the antenna radiator can be further enhanced, and the integral strength of the antenna radiator and the bottom wall can be improved.

In some embodiments, the insulator is of unitary construction with the sidewall.

By adopting the scheme, on one hand, the number of parts of the terminal equipment is reduced, and the assembly efficiency of the terminal equipment is improved.

In some embodiments, the conductive filler is a conductive paste.

By adopting the scheme, the grounding component can be more firmly installed in the shell.

In some embodiments, the conductive filler has a resistance value of 1 Ω or less.

By adopting the scheme, the obstruction of the conductive filling body to the grounding current of the antenna radiator can be reduced, and the reduction of the consumption of the conductive filling body to the electric energy of the terminal equipment is facilitated.

In some embodiments, the antenna structure further includes an insulating filler filled in a gap between the ground component and the sidewall, and the insulating filler and the conductive filler are staggered along a circumferential direction of the bottom wall.

Through adopting above-mentioned scheme, insulating obturator can the separation like this external water, impurity etc. enter into the part in the casing corrosion shell by the clearance between ground connection part and the lateral wall, and insulating obturator also can play certain limiting displacement to electrically conductive obturator to prevent that electrically conductive obturator from taking place the skew in the circumference of diapire.

In some embodiments, the insulating filler is a sealant.

By adopting the scheme, 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 more firmly mounted on the side wall of the front shell.

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

The terminal device has the same beneficial effects as the antenna structure in the first aspect, and details are not repeated here.

In some embodiments, the terminal device is a liquid crystal display device, the liquid crystal display device includes a backlight source and a metal back plate for carrying the backlight source, and the metal back plate is the grounding component. Or, the terminal device is an OLED display device, 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 grounding component.

By adopting the scheme, the gap formed between the antenna radiator and the grounding part is positioned in the lateral direction of the grounding part, so that the conductive filling body is conveniently filled into the gap formed between the antenna radiator and the grounding part.

Drawings

FIG. 1 is a schematic illustration of a front side of a handset in some embodiments of the present application;

FIG. 2 is an exploded view of the handset of FIG. 1;

FIG. 3 is a simplified schematic diagram of the handset of FIG. 1;

FIG. 4 is a cross-sectional view A-A of FIG. 1;

FIG. 5 is a cross-sectional view B-B of FIG. 1;

fig. 6 is a schematic diagram illustrating a positional relationship between an antenna radiator and a bottom wall of a front case of a mobile phone according to some embodiments of the present application;

FIG. 7 is a schematic view of the structure of FIG. 6;

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

fig. 9 is a schematic structural diagram of the bottom wall and the plurality of antenna radiators in fig. 6 from another view angle;

fig. 10 is a schematic structural diagram of a mobile phone according to another embodiment of the present application.

Detailed Description

In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the embodiments of the present application, it should be noted that the term "electrically connected" is to be understood in a broad sense, and for example, current conduction may be achieved by a direct connection, or electric energy conduction may be achieved by a capacitive coupling.

The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, an electronic reader, a wearable device, a remote controller, a point of sale (POS) machine, a notebook computer, a Personal Digital Assistant (PDA), a vehicle-mounted device, a network television, and other terminal devices having an antenna structure.

The antenna structure of the terminal device in the embodiment of the present application is specifically described below by taking a mobile phone as an example, and other types of terminal devices may be specifically set by referring to the design concept of the antenna structure in the embodiment of the mobile phone, which is not described in detail herein.

As shown in fig. 1, 2 and 3, fig. 1 is a schematic view of the front of a handset in some embodiments of the present application, fig. 2 is an exploded view of the handset in fig. 1, fig. 3 is a schematic view of the handset of fig. 1, and fig. 3 is a schematic view only in which the parts are not shown to scale. The mobile phone comprises a cover plate 21, a display panel 22, an optical diaphragm 23, a backlight source 3, a metal back plate and an antenna structure, wherein the antenna structure comprises a shell 1, a grounding part 4, a conductive filling body 6 and a plurality of antenna radiating bodies 5.

Fig. 4 is a sectional view a-a of fig. 1, as shown in fig. 3 and 4. The casing 1 is a casing of a mobile phone, the casing 1 includes a front case 11 (also referred to as a middle frame) and a rear cover 12 (also referred to as a battery cover), and the front case 11 includes a bottom wall 111 and a side wall 112 disposed at an edge of the bottom wall 111. The rear cover 12 is fastened to the front housing 11, the rear cover 12 forms an accommodating space 13 with the bottom wall 111 and the side wall 112 of the front housing 11, and the accommodating space 13 can be used for accommodating components such as the main board 24 and the battery of the mobile phone.

The plurality of antenna radiators 5 are disposed at the edge of the bottom wall 111 and are arranged at intervals along the circumferential direction of the bottom wall 111, and the ground component 4 is a metal back plate disposed in the front case 11, and the metal back plate is configured as a signal reference ground of the antenna radiators 5. By providing the metal back plate as the grounding part 4, the gap formed between the antenna radiator 5 and the metal back plate is located laterally of the metal back plate, thereby facilitating the filling of the conductive filler 6 into the gap formed between the antenna radiator 5 and the metal back plate.

The metal back plate encloses a receiving cavity 41, and the backlight 3 is disposed in the receiving cavity 41. The backlight 3 includes a light source 31 and a light guide plate 32, the light source 31 is disposed opposite to a side surface of the light guide plate 32, and the light guide plate 32 mainly converts the light source 31 into a surface light source, so as to better satisfy the requirement of the display panel 22 for light.

The Light source 31 may be a Light bar including Light-Emitting diodes (LEDs), but is not limited thereto, and other types of Light sources 31 may also be used. The metal back plate may be made of metal or of a metal alloy, for example, the metal back plate may be made of iron or an aluminum alloy.

The backlight 3 may be a side-type backlight or a direct-type backlight, and is not particularly 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 diffusion sheet, a prism sheet, and the like, and may be disposed according to actual situations. The display panel 22 is a liquid crystal display panel and is disposed on the light-emitting side of the optical film 23, and the cover 21 is disposed on the light-emitting side of the display panel 22 in a stacked manner to protect the display panel 22.

As shown in fig. 2 and 4, the edges of the cover plate 21 are bonded to the side walls 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 walls 112 to prevent external water, oxygen, impurities, etc. from entering the interior of the front case 11.

As shown in fig. 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 mode of realizing grounding through the elastic sheet, the grounding is realized through the conductive filling body 6, on one hand, the conductive filling body 6 fully utilizes the gap between the antenna radiator 5 and the grounding part 4, and does not need to additionally occupy other spaces in the shell 1, particularly the space in the thickness direction of the bottom wall 111 in the shell 1, so that the layout of parts in the shell 1 can be optimized, and the mobile phone can be made thinner. On the other hand, the grounding is realized through the conductive filling body 6, so that an elastic sheet and a mounting structure thereof do not need to be arranged between the antenna radiator 5 and the grounding part 4, the antenna structure is greatly simplified, and the cost of the mobile phone is favorably reduced.

In some embodiments, as shown in fig. 3, the conductive filling body 6 may be a conductive adhesive, so that the conductive adhesive may not only electrically connect the antenna radiator 5 with the ground component 4, but also bond the antenna radiator 5 with the ground component 4, so as to make the installation of the ground component 4 in the front case 11 more secure, and avoid poor contact between the conductive filling body 6 and the ground component 4 caused by shaking between the ground component 4 and the antenna radiator 5.

In some embodiments, the conductive filling 6 has a resistance value of 1 Ω or less. Thus, the conductive filler 6 with a smaller resistance can reduce the obstruction of the conductive filler 6 to the ground current of the antenna radiator 5, thereby not only ensuring that the antenna radiator 5 is smoothly electrically connected with the grounding part 4 to smoothly realize the grounding of the antenna radiator 5, but also being beneficial to reducing the consumption of the conductive filler 6 to the electric energy of the mobile phone, and being beneficial to improving the standby time of the mobile phone.

The material of the conductive adhesive can be a resin matrix doped with conductive filler, wherein the resin matrix can be polyacrylic acid, epoxy resin, organic silicon resin, polyimide resin, phenolic resin, polyurethane and the like. The conductive filler may be powders of gold, silver, copper, aluminum, zinc, iron, nickel, and graphite and some conductive compounds.

Of course, besides the conductive adhesive, the conductive filling body 6 may also be a filling body such as conductive foam, conductive rubber, conductive silicone, etc., which may be determined according to the actual situation.

In some embodiments, as shown in fig. 6 and 7, fig. 6 is a schematic diagram of a position relationship between an antenna radiator 5 and a bottom wall 111 of a front housing 11 of a mobile phone in some embodiments of the present application, and fig. 7 is a schematic diagram of the structure of fig. 6, where the schematic diagram is only a schematic diagram, and the structure is not shown according to an actual scale of the antenna radiator 5 and the bottom wall 111 of the front housing 11. The number of the antenna radiators 5 is plural and the antenna radiators are arranged at intervals along the circumferential direction of the bottom wall 111, and the conductive filling body 6 is filled in the gap between each antenna radiator 5 and the ground part 4.

By arranging a plurality of antenna radiators 5 along the circumferential direction of the bottom wall 111, the plurality of antenna radiators 5 can make full use of the space resources of the front case 11 of the mobile phone, and the communication signals can be transmitted and received through the plurality of antenna radiators 5, so that the communication quality can be improved, and the system channel capacity can be doubled without increasing the frequency spectrum resources and the transmission power of the antenna radiators 5, so that high-speed communication can be realized.

As shown in fig. 6 and 7, the bottom wall 111 of the front housing 11 is substantially rectangular, the bottom wall 111 includes two first edges 113 at two opposite ends of the bottom wall 111, and two second edges 114 at two opposite ends of the bottom wall 111, the second edges 114 are connected between the two first edges 113, and each second edge 114 forms a corner with the adjacent first edge 113 at the joint.

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

In some embodiments, as shown in fig. 6 and 7, the conductive filler 6 to which each antenna radiator 5 is connected is located at the first edge 113. By disposing the conductive filling body 6 at the first edge 113, the conductive filling body 6 can be prevented from interfering with devices disposed at other edges of the bottom wall 111, for example, as shown in fig. 6 and 7, the flexible circuit board connected to the display panel 22 is usually bent at the second edge 114 located at the lower side of the bottom wall 111 to the back side of the bottom wall 111 to be connected with the main board 24, if the conductive filling body 6 is disposed at the second edge 114 located at the lower side of the bottom wall 111, the conductive filling body 6 is easily interfered with the flexible circuit board connected to the display panel 22, and the conductive filling body 6 is disposed at the first edge 113, so that the conductive filling body 6 can be prevented from interfering with the 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 plurality of antenna radiators 5 is not unique, and in some embodiments, as shown in fig. 6 and 7, the plurality of antenna radiators 5 includes a first antenna radiator 51 disposed at the corner 115 and a second antenna radiator 52 disposed at the first edge 113; the first antenna radiator 51 has a portion located at the first edge 113 and another portion located at the second edge 114, and a gap between the portion 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 layout manner 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, so that 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, so as to improve the communication quality.

Of course, in addition to the above layout, the first antenna radiator 51 and the second antenna radiator 52 may be disposed at the first edge 113, so that the conductive filler 6 connected to each antenna radiator 5 is also located at the first edge 113.

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

Thus, the conductive filling body 6 connected to the first antenna radiator 51 and the second antenna radiator 52 is arranged at a shorter distance on the edge of the bottom wall 111, and the conductive filling body 6 is arranged without moving the position, so that the conductive filling body 6 can be conveniently arranged, and the arrangement efficiency of the conductive filling body 6 can be 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 of a unitary structure, that is: the conductive filler 6 connected to the first antenna radiator 51 and the conductive filler 6 connected to the second antenna radiator 52 are the same conductive filler 6. In this way, the grounding of the first antenna radiator 51 and the second antenna radiator 52 can be realized through one conductive filler 6, which can save the number of the conductive filler 6, for example, when the conductive filler 6 is conductive adhesive, the grounding of the first antenna radiator 51 and the second antenna radiator 52 can be realized through one process, which saves the time for setting the conductive filler 6 and is beneficial to further improving the setting efficiency of the conductive filler 6.

In some embodiments, as shown in fig. 6 and 7, the first antenna radiator 51 has a first feeding point 511 at the second edge 114, and a first grounding point 512 at the first edge 113, the first grounding point 512 being electrically connected to the grounding member 4 through the conductive filling body 6.

By disposing the first feeding point 511 and the first grounding point 512 at different edges of the bottom wall 111, the distances between the first feeding point 511 and the first grounding point 512 are better ensured to be within a predetermined range, so that noise generated by the antenna radiator 5 when the distances between the first feeding point 511 and the first grounding point 512 are too close can be avoided.

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

Thus, when there are more electronic devices disposed on the second edge 114 of the bottom wall 111, for example, as shown in fig. 6 and 6, the main board 24 of the mobile phone is generally disposed at a position close to the second edge 114 above, and the electronic devices on the main board 24 are closer to the second antenna radiator 52, the number of feeding points on the first antenna radiator 51 can be increased by adding the second feeding point 513 to the second antenna radiator 51 (i.e., the second antenna radiator 51a and the second antenna radiator 51b) disposed at this position, so as to improve the signal strength on the first antenna radiator 51, thereby reducing the interference of the electronic devices on the signals transmitted by the second antenna radiator 52 during operation and improving the anti-interference performance of the first antenna radiator 51.

In some embodiments, as shown in fig. 6 and 7, a first antenna radiator 51 is disposed at each corner 115, and the first antenna radiators 51 located at the four corners 115 of the bottom wall 111 are a first sub radiator 51a, a second sub radiator 51b, a third sub radiator 51c and a fourth sub radiator 51d, respectively. With this arrangement, the use 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 transmit and receive signals better, thereby improving the quality of communication.

The second feeding point 513 may be disposed at the first edge 113 or at the second edge 114, for example, as shown in fig. 6 and 7, the second feeding point 513 of the first sub-radiator 51a is located at the first edge 113, and the second feeding point 513 of the second sub-radiator 51b is located at the second edge 114. The position 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 ensured within a predetermined range.

In some embodiments, as shown in fig. 6 and 7, the first sub-radiator 51a and the second sub-radiator 51b are disposed adjacent to each other, the first sub-radiator 51a and the second sub-radiator 51b have a second antenna gap 54 therebetween at the second edge 114, and the first feeding points 511 of the first sub-radiator 51a and the second sub-radiator 51b are disposed at the second antenna gap 54.

By such an arrangement, the first feeding points 511 of the first and second sub-radiators 51a and 51b are closer to each other, so that the first and second sub-radiators 51a and 51b can be conveniently and intensively fed, and the space occupied by the feeding lines of the first and second sub-radiators 51a and 51b is reduced.

In addition, in the mobile phone, the main board is usually disposed near 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 feeding point 511 of the first sub-radiator 51a and the second sub-radiator 51b are both closer to the main board, and the main board is also convenient to feed power to the first sub-radiator 51a and the second sub-radiator 51 b.

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-radiators 51c and fourth sub-radiators 51 d.

The widths of the first antenna gap 53 and the second antenna gap 54 are 1mm, but the widths are not limited thereto, and may be set to other values as needed.

In some embodiments, the first antenna radiators 51 located at two of the 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 antenna radiators. As shown in fig. 6 and 7, the second and fourth sub-radiators 51b and 51d are high-frequency antenna radiators, and the first and third sub-radiators 51a and 51c are low-frequency antenna radiators.

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 between 700MHZ and 960 MHZ.

Through the arrangement, the mobile phone can receive and transmit low-frequency signals and high-frequency signals, so that the receiving and transmitting requirements of the mobile phone on the high-frequency and low-frequency signals can be met.

In some embodiments, as shown in fig. 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 first antenna radiators 51 located at the other two opposite corners 115 of the bottom wall 111 are low frequency antenna radiators, 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 51a and the third sub-radiator 51c are respectively located at the other two opposite corners 115 of the bottom wall 111. The two opposite corners 115 of the bottom wall 111 specifically refer to two non-adjacent corners 115 of the bottom wall 111.

Compared to the case where two high-frequency antenna radiators (i.e., the second sub-radiator 51b and the fourth sub-radiator 51d) are disposed at two adjacent corners 115, two high-frequency antenna radiators are disposed at two opposite corners 115, so that the two high-frequency antenna radiators are spaced apart from each other, on the one hand, high-frequency signals generated when the two high-frequency antenna radiators are spaced apart from each other can be prevented from interfering with each other, and on the other hand, the overlapping of radiation areas of the two high-frequency antenna radiators can be reduced, so that the range of the radiation areas of the two high-frequency antenna radiators can be increased.

Similarly, compared to the case where two low frequency antenna radiators (the first sub-radiator 51a and the third sub-radiator 51c) are disposed at two adjacent corners 115, two low frequency antenna radiators are disposed at two opposite corners 115, so that the two low frequency antenna radiators are spaced apart from each other, on one hand, low frequency signals generated when the two low frequency antenna radiators are spaced apart from each other can be prevented from interfering with each other, on the other hand, the overlapping of radiation areas of the two low frequency antenna radiators can be reduced, and thus the range of the radiation areas of the two low frequency antenna radiators can be increased.

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

The frequency band of the second antenna radiator 52 for receiving the WIFI signal may be between 2.4GHz and 2.5 GHz.

As can be seen from fig. 6 and 7, the second antenna radiator 52 is located at the first edge 113, not at the corner 115. The benefits of this arrangement are: when the mobile phone is held by a hand, for example, when a game is played, the two hands of a person hold the upper end and the lower end of the mobile phone; for another example, when a user makes a call, the user holds the lower end of the mobile phone with his hand, and at this time, the hand shields the corner 115 to some extent, and the second antenna radiator 52 is disposed at the first edge 113, so that the influence of the shielding of the hand on the WIFI signal received by the second antenna radiator 52 can be reduced.

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 a longer wavelength and a stronger diffraction capability, so that when the hand holds the mobile phone, the hand has a smaller influence on the signals transmitted and received by the first sub radiator 51a and the third sub radiator 51c disposed at the corner 115. Since the second sub radiator 51b and the fourth sub radiator 51d are located at the two corners 115, high frequency signals can be transmitted and received at different positions, and the transmission and reception capacity is high, so that when a hand holds the mobile phone, the influence of the shielding of the hand on the transmission and reception of the second sub radiator 51b and the fourth sub radiator 51d is relatively small.

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

Through the arrangement, the first feeding point 511 of the first antenna radiator 51 can be better prevented from being too close to the first grounding point 512, so that noise generated by the first antenna radiator 51 can be reduced to the maximum extent, and normal signal receiving and transmitting of the first antenna radiator 51 can be ensured.

In some embodiments, as shown in fig. 6 and 7, the second antenna radiator 52 has a third feeding point 521 and a second grounding point 522, the second grounding point 522 is electrically connected to the grounding member 4 through the conductive filler 6, and a distance d5 between the third feeding point 521 and the second grounding point 522 is in a range of 17-20 mm.

Through the arrangement, the too close 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 generation of noise waves of the second antenna radiator 52 can be reduced to the maximum extent, and the normal signal receiving and transmitting of the second antenna radiator 52 can be ensured.

It should be noted that: when the first and

second antenna radiators

51 and 52 are designed, the lengths of the first and

second antenna radiators

51 and 52 are proportional to the wavelengths of the signals transmitted and received. Since the longer the radiator length, the longer the wavelength of the signal transmitted and received by the radiator, the lower the frequency of the signal transmitted and received by the radiator, and the longer the length of the low-frequency antenna radiator is designed to be greater than the length of the high-frequency antenna radiator, the distance range between the first feeding point 511 of the first sub-radiator 51a and the third sub-radiator 51c and the first grounding point 512 is designed to be larger, and the distance range between the first feeding point 511 of the second sub-radiator 51b and the fourth sub-radiator 51d and the first grounding point 512 is designed to be smaller.

In some embodiments, as shown in fig. 4 and 6, each antenna radiator 5 is of a unitary structure with the bottom wall 111. Thus, each antenna radiator 5 and the bottom wall 111 are integrated, that is, the antenna formed by the antenna radiator 5 is an MDA (Mode decoration antenna), which greatly reduces the number of parts of the mobile phone and is beneficial to improving the assembly efficiency of the mobile phone.

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

In some embodiments, as shown in fig. 8 and 9, fig. 8 and 9 respectively show the bottom wall 111 and the plurality of antenna radiators 5 in fig. 6 in different views. Each antenna radiator 5 has a slot 55 between it and the bottom wall 111. By providing the slot 55, a capacitance is formed between the antenna radiator 5 and the bottom wall 111, and the antenna is free at the slot 55, so that a potential difference is formed between the antenna radiator 5 and the bottom wall 111, and the radiation performance of the antenna radiator 5 can be enhanced.

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

In some embodiments, as shown in fig. 4, the antenna structure further includes an insulator 14, the insulator 14 being disposed in the slot 55. By arranging the insulating member 14 in the slot 55, on 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, which is beneficial to further enhancing the radiation performance of the antenna radiator 5; on the other hand, the strength of the antenna radiator 5 as a whole with the bottom wall 111 is also improved, so that the resistance to deformation of the whole formed by the bottom wall 111 and the antenna radiator 5 is increased.

In some embodiments, as shown in FIG. 4, the insulator 14 is a unitary structure with the sidewall 112. Therefore, on one hand, the number of parts 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 have a fixing structure of the insulating member 14 at the slit 55, thereby facilitating the simplification of the structure of the front case 11 at the slit 55.

The side wall 112 may be made of a plastic material.

In some embodiments, as shown in fig. 2 and 5, fig. 5 is a cross-sectional view B-B of fig. 1, the antenna structure further includes an insulating filler 7 filled in a gap between the ground component 4 and the sidewall 112, and the insulating filler 7 is offset from the conductive filler 6 along a circumferential direction of the bottom wall 111. Thus, the insulating filling body 7 can prevent external water, impurities and the like from entering the front shell 11 from the gap between the grounding part 4 and the side wall 112 to corrode parts in the front shell 11, thereby ensuring the normal operation of the mobile phone. Meanwhile, because along the circumference of the bottom wall 111, the insulating filling body 7 and the conductive filling body 6 are arranged in a staggered manner, so that along the circumference of the bottom wall 111, the insulating filling body 7 can also play a certain limiting role on the conductive filling body 6, and the conductive filling body 6 is prevented from deviating in the circumference of the bottom wall 111.

In some embodiments, as shown in fig. 2 and 5, the insulating filler 7 is a sealant. The sealant not only fills the gap between the grounding member 4 and the sidewall 112 to seal the gap, but also bonds the grounding member 4 and the sidewall 112, so that the grounding member 4 is more firmly mounted on the sidewall 112 of the front case 11, and the grounding member 4 and the antenna radiator 5 are prevented from shaking.

The sealant can be resin as a base material, wherein the resin can be epoxy resin, unsaturated polyester resin, phenolic resin, polyacrylic resin, polyvinyl chloride resin and the like.

Of course, the insulating filler 7 may be a rubber strip or the like for sealing, in addition to the sealant.

The mobile phone is a liquid crystal display device, and certainly not limited thereto, the mobile phone may also be an OLED (Organic Light-Emitting Diode) display device, specifically as shown in fig. 10, fig. 10 is a schematic structural diagram of the mobile phone in other embodiments of the present application, and fig. 10 is only a schematic diagram, where each part is not shown according to an actual scale of each part. The main difference between this embodiment and the embodiment shown in fig. 1 to 9 is that: the display panel 22 is an OLED display panel 22, and the ground member 4 is a metal support for supporting the OLED display panel.

By providing the metal support as the ground part 4 such that the gap formed between the antenna radiator 5 and the ground part 4 is located laterally of the ground part 4, the conductive filler 6 is facilitated to be filled into the gap formed between the antenna radiator 5 and the ground part 4.

The metal support may be a metal plate disposed on the back side of the OLED display panel 22. The metal support plate may be made of metal or metal alloy, such as iron, aluminum alloy, etc.

Other structures in this embodiment may specifically refer to the arrangements in the embodiments of fig. 1 to 9, and are not described herein again.

In the description herein, 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, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An antenna structure for a terminal device, comprising:

the shell is a shell of the terminal equipment and comprises a bottom wall and a side wall arranged at the edge of the bottom wall;

the antenna radiators are arranged at the edge of the bottom wall and are distributed at intervals along the circumferential direction of the bottom wall;

a ground part disposed in the case and configured as a signal reference ground of the antenna radiator;

and the conductive filling body is filled in a gap between each antenna radiator and the grounding part and electrically connects each antenna radiator and the grounding part.

2. The antenna structure according to claim 1,

the bottom wall comprises two first edges positioned at two opposite ends of the bottom wall, and the conductive filling body connected with each antenna radiator is positioned at the first edges.

3. The antenna structure according to claim 2,

the bottom wall further comprises two second edges positioned at two opposite ends of the bottom wall, and the second edges are connected to the two second edges

The first edges are arranged between the first edges, and each second edge and the adjacent first edge form a corner at the joint;

the plurality of antenna radiators comprise a first antenna radiator arranged at the corner and a second antenna radiator arranged at the first edge; the first antenna radiator has a portion located at the first edge and another portion located at the second edge, and a gap between the portion of the first antenna radiator located at the second edge and the ground member is filled with the conductive filler.

4. The antenna structure according to claim 3,

a first antenna gap is formed between the first antenna radiator and the second antenna radiator, and the conductive filler connected to the first antenna radiator and the conductive filler connected to the second antenna radiator are both arranged at the first antenna gap.

5. The antenna structure according to claim 4,

the conductive filler connected to the first antenna radiator and the conductive filler connected to the second antenna radiator are of an integral structure.

6. The antenna structure according to any of claims 3 to 5,

the first antenna radiator has a first feeding point at the second edge, and a first grounding point at the first edge, the first grounding point being electrically connected to the grounding member through the conductive filler.

7. The antenna structure according to claim 6,

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,

every the corner all is equipped with first antenna radiator, has at least two adjacent first antenna radiator between have the second antenna clearance in second border department, and two adjacent first antenna radiator the first feed point all set up in second antenna clearance department.

9. The antenna structure according to claim 6,

each corner is provided with the first antenna radiator, the first antenna radiators positioned at two corners of the bottom wall are high-frequency antenna radiators, and the first antenna radiators positioned at the other two corners of the bottom wall are low-frequency antenna radiators; and/or the second antenna radiator is a WIFI antenna radiator.

10. The antenna structure according to claim 9,

the first antenna radiators at the two opposite corners of the bottom wall are high-frequency antenna radiators, and the first antenna radiators at the other two opposite corners of the bottom wall are low-frequency antenna radiators.

11. The antenna structure according to claim 10,

the first antenna radiators 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 radiator is located between the second sub-radiator and the third sub-radiator;

the distance between the first feed point and the first grounding point of the first sub-radiator is 40-50 mm; the distance between the first feed point and the first grounding point of the second sub-radiator is 30-40 mm; the distance between the first feed point and the first grounding point of the third sub-radiator is 30-40 mm; the distance between the first feed point and the first grounding point of the fourth sub-radiator is 20-30 mm.

12. The antenna structure according to claim 9,

the second antenna radiator is provided with a third feeding point and a second grounding point, the second grounding point is electrically connected with the grounding part through the conductive filling body, and the distance between the third feeding point and the second grounding point ranges from 17 mm to 20 mm.

13. The antenna structure according to any of claims 1-5,

each antenna radiator and the bottom wall are of an integrated structure.

14. The antenna structure according to claim 13,

and a gap is formed between each antenna radiator and the bottom wall.

15. The antenna structure according to claim 14,

the antenna structure further comprises an insulating member disposed in the slot.

16. The antenna structure according to claim 15,

the insulating part and the side wall are of an integral structure.

17. The antenna structure according to any of claims 1-5,

the conductive filling body is conductive adhesive.

18. The antenna structure according to any of claims 1-5,

the resistance value of the conductive filling body is less than or equal to 1 omega.

19. The antenna structure according to any of claims 1-5,

the antenna structure further comprises an insulating filling body filled in a gap between the grounding component and the side wall, and the insulating filling body and the conductive filling body are arranged in a staggered mode along the circumferential direction of the bottom wall.

20. The antenna structure according to claim 19,

the insulating filling body is sealant.

21. A terminal device, characterized in that it comprises an antenna structure according to any one of claims 1 to 20.

22. The terminal device of claim 21,

the terminal equipment is liquid crystal display equipment which comprises a backlight source and a metal back plate used for bearing the backlight source, and the metal back plate is the grounding component;

or, the terminal device is an OLED display device, 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.