CN215732189U

CN215732189U - Display device and antenna assembly thereof

Info

Publication number: CN215732189U
Application number: CN202122338408.8U
Authority: CN
Inventors: 陈浩
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-02-01
Anticipated expiration: 2031-09-26

Abstract

The embodiment of the utility model provides display equipment and an antenna assembly thereof. Wherein the antenna assembly comprises; a PCB board; the grounding metal layer is arranged on one side of the PCB; a clearance area is arranged inside the grounding metal layer; the radiation arm unit is arranged on one side, which is positioned on the same side of the grounding metal layer, of the PCB, the radiation arm unit is positioned in the clearance area, a gap is formed between the part of the radiation arm unit and the grounding metal layer, and the radiation arm unit is coupled with the gap of the grounding metal layer; and the feeder line is electrically connected with the radiation arm unit. The display device comprises a display screen and a communication module, wherein the communication module comprises the antenna assembly. According to the antenna assembly provided by the utility model, the installation area for installing the antenna does not need to be independently arranged on the outer side of the grounding metal layer of the PCB, the size of the PCB is not limited by the installation area, so that the size of the PCB can be effectively reduced, meanwhile, the height of the PCB is not increased, and the antenna assembly can be used for ultrathin display equipment.

Description

Display device and antenna assembly thereof

Technical Field

The present invention relates to wireless communication technologies, and in particular, to a display device and an antenna assembly thereof.

Background

An antenna is a component for transmitting or receiving an electromagnetic wave signal, which converts a radio frequency signal transmitted by a feeder line into an electromagnetic wave propagating in a free space, or converts an electromagnetic wave in a free space into a radio frequency signal and transmits it by a feeder line.

In the related art, the antenna is a metal stamping part or a three-dimensional ceramic part, and is mounted on the PCB by welding, specifically, a clearance mounting area is provided on the PCB, the antenna is welded in the mounting area, the antenna is mounted on the PCB and then connected with the feeder, and the feeder transmits radio frequency signals for the antenna.

As display devices are developed, more and more display devices require the use of a small-sized PCB, however, a mounting area for clearance of mounting antennas limits the size of the PCB, so that the area of the PCB cannot be effectively reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides display equipment and an antenna assembly thereof, and aims to solve the problem that the size of a PCB (printed circuit board) is limited by a clearance mounting area for mounting an antenna, so that the area of the PCB cannot be effectively reduced.

According to an aspect of embodiments of the present invention, there is provided an antenna assembly, including;

a PCB board; a grounding metal layer is arranged on the surface of the PCB, and a clearance area is arranged inside the grounding metal layer;

a radiation arm unit disposed coplanar with the ground metal layer and located inside the clearance area; a gap is formed between the radiation arm unit and the grounding metal layer, and a part of the radiation arm unit for transmitting signals is in gap coupling with the grounding metal layer adjacent to the part;

and the feeder line is electrically connected with the radiation arm unit and is used for inputting radio frequency signals to the radiation arm unit.

In some embodiments, the radiating arm unit comprises a main branch, a first branch and a second branch, a first end of the main branch being electrically connected to the feeder line, a second end of the main branch being electrically connected to the first branch, a position of the main branch near the first end being electrically connected to a first end of the second branch;

the main branch and the first branch form a high-frequency radiation arm for outputting high-frequency signals, and the second branch and a part of the main branch between the first end and the junction of the second branch form a low-frequency radiation arm for outputting low-frequency signals;

the length of the low-frequency radiating arm is greater than that of the high-frequency radiating arm, and the tail end of the low-frequency radiating arm and the tail end of the high-frequency radiating arm are respectively coupled with the adjacent ground metal layer gaps. As will be understood by those skilled in the art, the radiation arm unit may perform a frequency division function, where the high frequency radiation arm may be used for performing high frequency radiation, and the low frequency radiation arm may be used for performing low frequency radiation, that is, the antenna assembly provided by the present invention may be used for both transceiving high frequency signals and transceiving low frequency signals.

In some embodiments, the low-frequency radiating arm further includes a ground branch, a length direction of the ground branch extends along a first direction, a first gap extending along the first direction is disposed between the ground branch and the ground metal layer, and the ground branch is coupled with the ground metal layer;

the second branch comprises a first section and a second section, the length of the first section extends along a first direction, the second section extends along a second direction, a first end of the second section is electrically connected with the main branch, a second end of the second section is electrically connected with a first end of the first section, the first section is at least partially opposite to the ground branch, a second gap is arranged between the first section and the ground branch, the first section is coupled with the ground branch gap, and the first direction is perpendicular to the second direction. It can be understood by those skilled in the art that by providing the ground branch, the length of the second branch can be reduced while ensuring the length of the low-frequency radiating arm, and the second branch is prevented from being too long and occupying a large clearance area.

In some embodiments, the width of the second slit is 0.1-0.5 times the width of the second branch. It will be appreciated by those skilled in the art that the above arrangement ensures that the second branch can be reliably slot-coupled to the ground branch.

In some embodiments, the main branch extends along a first direction in a length direction, the first branch extends along a second direction in a length direction, a third slot extending along the second direction in the length direction is disposed between the first branch and the ground metal layer, and the first branch is slot-coupled to the ground metal layer. It will be appreciated by those skilled in the art that the above arrangement ensures that the high frequency radiating arm is slot coupled to the ground metal layer.

In some embodiments, the width of the third slit is 0.1-0.5 times the width of the first branch. It will be appreciated by those skilled in the art that the above arrangement can ensure the reliability of the coupling between the high frequency radiating arm and the ground metal layer.

In some embodiments, the width of the region where the ground metal layer is coupled to the radiation arm unit slot is greater than the width of the low-frequency radiation arm, and the width of the region where the ground metal layer is coupled to the radiation arm unit slot is greater than the width of the high-frequency radiation arm. It will be understood by those skilled in the art that the area where the ground metal layer is coupled to the radiating arm unit slot can be used for transceiving electromagnetic signals and for bandwidth extension of the electromagnetic signals.

In some embodiments, the ground metal layer is provided with an isolation slot and two clearance areas, the two clearance areas are symmetrically arranged on two sides of the isolation slot, a radiation arm unit is arranged in each clearance area, and each radiation arm unit is electrically connected with one feeder line;

the length direction of the isolation slot extends along a first direction, one end of the isolation slot penetrates through one side edge of the grounding metal layer, and the other end of the isolation slot exceeds a feeding point of the radiation arm unit connected with the feeder line along the length direction of the isolation slot. As can be understood by those skilled in the art, the number of the radiation arm units is two, so that the distance of the antenna assembly for transmitting the electromagnetic wave signals can be increased, and the transmission quality of the electromagnetic wave signals can be improved; the isolation groove can increase the isolation between the two antennas in the antenna assembly and reduce the mutual interference between the two antennas.

In some embodiments, the width of the isolation trench is greater than 3 mm. As can be understood by those skilled in the art, with the above arrangement, when the two radiating arm units generate high-frequency signals, the isolation between the two antennas in the antenna assembly can reach about-17 dB; when the two radiation arm units generate low-frequency signals, the isolation between the two antennas in the antenna assembly can reach about-30 dB.

According to another aspect of the embodiments of the present invention, there is provided a display device, including a display screen and a communication module;

the communication module is electrically connected with the display screen and comprises the antenna assembly.

As can be understood by those skilled in the art, the antenna assembly of the present invention has a clearance area provided inside the ground metal layer on the PCB board, a radiation arm unit provided inside the clearance area and electrically connected to the feed line, a gap provided between a portion of the radiation arm unit and the ground metal layer, and the radiation arm unit slot-coupled to the ground metal layer. Like this, radiation arm unit, ground metal layer and the coupling gap between the two prescribes a limit to the antenna that is used for the transmission and receives the electromagnetic wave signal, utilize ground metal layer as the irradiator at the transmission of electromagnetic wave signal and the in-process of receiving promptly, and need not set up the installing zone that is used for installing the antenna alone on the PCB board, avoided the installing zone to the restriction of PCB board size, make the area of PCB board effectively reduce, simultaneously, compare in installing the antenna alone at the installing zone, the height of PCB board can not increase, make the PCB board can be used for ultra-thin type display device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another antenna assembly provided by an embodiment of the present invention;

fig. 3 is a partial structural view of the radiation arm unit in fig. 2;

fig. 4 is a schematic structural diagram of another antenna assembly provided in an embodiment of the present invention;

fig. 5 is a graph of S parameters for the antenna assembly of fig. 4;

fig. 6 is a system block diagram of a display device according to an embodiment of the present invention.

Description of reference numerals:

1-a communication module; 10-an antenna assembly;

100-a PCB board; 110-a ground metal layer;

111-a clearance zone; 112-an isolation trench;

120-a radiating arm unit; 121-main branch;

1211-a first end of the main leg; 1212-a second end of the primary;

122 — first branch; 123-a second branch;

1231-first stage; 1232-a first end of the first section;

1233-second stage; 1234-a first end of the second section;

1235-a second end of the second section; branch 124-ground;

125-high frequency radiating arm; 126-low frequency radiating arm;

130-a feeder; 140-a first gap;

150-a second gap; 160-third gap;

170-a first antenna; 180-a second antenna;

2-display screen.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be modified as needed by those skilled in the art to suit particular applications.

Next, it should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the direction or positional relationship shown in the drawings, which are merely for convenience of description, and do not indicate or imply that a device or a member must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the related art, a display apparatus includes a display screen for displaying an image and a communication module for communicating with a control device or a server according to various communication protocol types, wherein the communication module transmits or receives electromagnetic waves through an antenna. The antenna is a metal stamping part or a three-dimensional ceramic part, a clearance mounting area is arranged on the PCB, the mounting area is positioned on the outer side of the ground wire of the PCB, and the antenna is mounted in the mounting area in a welding mode. More and more devices require the use of a small-sized PCB, however, a clearance mounting area for mounting an antenna on the PCB limits the size of the PCB, so that the area of the PCB cannot be effectively reduced.

Through repeated thinking and verification, the inventor of the present application finds that if a clearance area is provided inside a ground metal layer of a PCB board, a radiating element is installed inside the clearance area and is slot-coupled with the ground metal layer, and at the same time, the radiating element is electrically connected with a feeder line. Thus, the radiating element, the ground metal layer, and the coupling slot between the radiating element and the ground metal layer define an antenna for transmitting or receiving electromagnetic waves. Like this, need not set up the installing zone that is used for installing the antenna alone on the PCB board, and then the area of PCB board can not receive the restriction of installing zone for the area of PCB board can effectively reduce, and the height of PCB board can not increase simultaneously, makes the PCB board can be used for ultra-thin type display device.

In view of the above, the present inventors have devised an antenna assembly in which a clearance is provided inside a ground metal layer on one side of a PCB board, a radiation arm unit is mounted in the clearance and the radiation arm unit is slot-coupled to the ground metal layer. The radiation arm unit is electrically connected with the feeder line, and an antenna for transmitting or receiving electromagnetic waves is defined by the radiation arm unit, the ground metal layer and a coupled gap therebetween. The installation area for installing the antenna is avoided being independently arranged on the PCB, and the limitation of the installation area on the size of the PCB is further eliminated.

Fig. 1 is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention. As shown in fig. 1, the antenna assembly provided in the present embodiment includes a PCB (Printed Circuit Board) 100, a radiation arm unit 120, and a feeder line 130. The surface of the PCB 100 is provided with a ground metal layer 110, and the ground metal layer 110 may be fixed to the substrate of the PCB 100 by soldering, for example. It is noted that the shape of the ground metal layer 110 may be any suitable shape, such as rectangular or circular. In general, copper may be used as a material of the ground metal layer 110. The ground metal layer 110 is provided with a clearance area 111 inside, and the clearance area 111 may be rectangular, specifically, the clearance area 111 is a region inside the ground metal layer 110, and a portion of the ground metal layer 110 in the region is removed. For example, the clearance area 111 may be disposed at a side of the ground metal layer 110, as shown in fig. 1, the clearance area 111 may be disposed at a left side of the ground metal layer 110, the clearance area 111 is provided with an opening and the opening of the clearance area 111 is located at the left side of the ground metal layer 110, so as to facilitate the antenna assembly to transmit and receive electromagnetic wave signals.

The radiation arm unit 120 is disposed coplanar with the ground metal layer 110, i.e., the radiation arm unit 120 and the ground metal layer 110 are located on the same side of the PCB board. Fig. 1 shows that the radiation arm unit 120 is located inside the clearance area 111, and a gap is provided between the radiation arm unit 120 and the ground metal layer 110, that is, a gap is provided between the radiation arm unit 120 and the edge of the clearance area 111. In a possible implementation manner, the radiation arm unit 120 may also be fixed to the substrate of the PCB board 100 by soldering, and a portion of the radiation arm unit 120 for transmitting a signal is slot-coupled to the ground metal layer 110 adjacent to the portion. The length of the radiation arm unit 120 may be adjusted according to the wavelength of the electromagnetic wave signal, that is, the length of the radiation arm unit 120 may be a quarter of the wavelength, and it is worth mentioning that the length of the radiation arm unit 120 may be slightly shorter than the quarter of the wavelength due to the influence of the substrate of the PCB 100.

The feed line 130 is electrically connected to the radiating arm unit 120, and an RF trace line may be used as the feed line 130 of the antenna assembly, for example. Fig. 1 shows that the ground metal layer 110 is provided with a channel for passing through the feed line 130 below the clearance area 111, a part of the feed line 130 is located inside the channel and the top end of the feed line 130 is fixed with the bottom end of the radiation arm unit 120, wherein the feed line 130 and the bottom end of the radiation arm unit 120 can be fixed by welding. Preferably, a space is provided between the feeding line 130 and the channel, so as to prevent the ground metal layer 110 from affecting signals transmitted by the feeding line 130. It is easily understood that the feeding line 130 is used to input a radio frequency signal to the radiation arm unit 120, and the radio frequency signal may be primarily radiated by the radiation arm unit 120. A portion of the radiation arm unit 120 for transmitting a signal is slot-coupled with the ground metal layer 110 adjacent to the portion, so that the ground metal layer 110 may also serve as a radiation member, i.e., the ground metal layer 110, the radiation arm unit 120 and the coupling slot therebetween define an antenna for transmitting and receiving electromagnetic wave signals.

The present embodiment provides an antenna assembly in which the clearance area 111 is provided inside the ground metal layer 110, the radiation arm unit 120 is provided inside the clearance area 111, and the radiation arm unit 120 is slot-coupled to the ground metal layer 110. The radiation arm unit 120, the ground metal layer 110, and the coupling slot therebetween define an antenna for transceiving electromagnetic waves. Thus, a mounting area for mounting an antenna does not need to be separately provided on the PCB 100 outside the ground metal layer 110, and the size of the PCB 100 is not limited by the mounting area, so that the area of the PCB 100 can be effectively reduced. On the other hand, the antenna assembly provided by the embodiment can reduce the cost compared with the case of separately soldering the antenna on the PCB 100, and at the same time, the height of the PCB is not increased, so that the antenna assembly can be used for an ultra-thin display device.

Fig. 2 is a schematic structural diagram of another antenna assembly provided by an embodiment of the present invention; fig. 3 is a partial structural schematic diagram of the radiation arm unit in fig. 2. As shown in fig. 2-3, the radiating arm unit 120 includes a main branch 121, a first branch 122 and a second branch 123, wherein a first end 1211 of the main branch, i.e., the bottom end of the main branch 121, is electrically connected to the feeder line 130, and a second end 1212 of the main branch, i.e., the top end of the main branch 121, is electrically connected to the first branch 122. The main leg 121 is electrically connected to a first end of a second leg 123 at a location proximate the first end. For example, the main branch 121, the first branch 122 and the second branch 123 may be manufactured as a single piece through a one-step molding process, and the main branch 121 and the feeder line 130 are electrically connected by means of soldering. The specific widths of the main branch 121, the first branch 122 and the second branch 123 are not limited herein, and those skilled in the art can set the widths of the main branch 121, the first branch 122 and the second branch 123 according to the radiation bandwidth of the radiation arm.

It should be noted that the main branch 121 and the first branch 122 form a high-frequency radiating arm 125 for outputting a high-frequency signal, wherein the frequency of the high-frequency signal is 5-7GHz, which can meet the requirement of WiFi6E in the 6GHz band, and in a possible implementation, the length of the high-frequency radiating arm 125 may be a quarter of the wavelength of the high-frequency signal with the frequency of 6 GHz. The second branch 123 and the portion of the main branch 121 between the first end and the junction with the second branch 123 constitute a low frequency radiating arm 126 for outputting a low frequency signal, wherein the frequency of the low frequency signal is 2.4-2.5GHz, and the length of the low frequency radiating arm 126 may be, for example, one quarter of the wavelength of the low frequency signal with the frequency of 2.45 GHz.

It is easy to understand that the high frequency signal has a relatively long wavelength compared to the low frequency signal, and the generation of the high frequency signal by the radiating arm or the low frequency signal is related to the length of the radiating arm, i.e. the length of the radiating arm is equal to a quarter of the wavelength. That is, the length of the low frequency radiating arm 126 is greater than the length of the high frequency radiating arm 125, and the end of the low frequency radiating arm 126 and the end of the high frequency radiating arm 125 are slot-coupled to the ground metal layer 110 adjacent thereto, respectively. In the antenna assembly provided by this embodiment, the radiating arm includes the main branch 121, the first branch 122, and the second branch 123, when the feeder 130 transmits a radio frequency signal for the radiating arm unit, the radiating arm unit can perform a frequency division function, the high-frequency radiating arm 125 can output a high-frequency signal, and the low-frequency radiating arm 126 can output a low-frequency signal, so as to meet the requirement of the antenna assembly for transceiving a multi-frequency signal. On the other hand, the portion of the main branch 121 between the first end and the junction with the second branch 123 is a portion shared by the high-frequency radiating arm 125 and the low-frequency radiating arm 126, and the total length of the high-frequency radiating arm 125 and the low-frequency radiating arm 126 can be reduced by providing this portion, so as to reduce the area of the clearance area 111, and a person skilled in the art can adjust the length of the low-frequency radiating arm 126 by adjusting the length of the portion shared by the high-frequency radiating arm 125 and the low-frequency radiating arm 126, so as to adjust the frequency of the low-frequency signal generated by the low-frequency radiating arm 126.

Fig. 2 shows that the low frequency radiating arm 126 further comprises a ground branch 124, and the length direction of the ground branch 124 extends in the first direction. Illustratively, the ground branch 124 is formed in a stripe structure having a length direction extending in the first direction, and the ground branch 124 is disposed at a left position of the ground metal layer 110. The top end of the ground branch 124 is fixedly connected to the left side of the ground metal layer 110, a first slit 140 extending in the first direction is provided between the ground branch 124 and the ground metal layer 110, and the ground branch 124 is coupled to the ground metal layer 110. Illustratively, the first slit 140 may be formed at the left side of the ground metal layer 110 through an etching process, thereby forming the ground branch 124 at the left side of the ground metal layer 110. It is easily understood that the first gap 140 between the ground branch 124 and the ground metal layer 110 defines the length of the ground branch 124, and by arranging the ground branch 124 to reduce the area of the clearance area 111 when the low-frequency radiating arm 126 meets the length requirement for generating a low-frequency signal, the size of the PCB board can be further reduced.

The second branch 123 includes a first section 1231 having a length extending along a first direction and a second section 1233 having a length extending along a second direction, wherein the first direction is perpendicular to the second direction, specifically, the first direction is a vertical direction in fig. 2, and the second direction is a horizontal direction in fig. 2, that is, the second branch 123 includes the first section 1231 and the second section 1233 which are perpendicular to each other. The first end 1234 of the second section, i.e., the right end of the second section 1233, is electrically connected to the main leg 121, and the second end 1235 of the second section, i.e., the left end of the second end, is electrically connected to the first end 1232 of the first section, i.e., the bottom end of the first section 1231. Fig. 2 shows that the length direction of the first segment 1231 is the same as the length direction of the ground branch 124, and the first segment 1231 is at least partially opposite to the ground branch 124, i.e., the first segment 1231 may be entirely opposite to the ground branch 124, or the upper portion of the first segment 1231 is opposite to the ground branch 124. The second slot 150 is formed between the first segment 1231 and the ground branch 124, and the first segment 1231 is slot-coupled to the ground branch 124, i.e., the first segment 1231 is slot-coupled to the ground branch 124 through the second slot 150.

As will be understood by those skilled in the art, by providing the ground branch 124, the ground branch 124 is slot-coupled to the first section 1231 of the second branch 123, that is, when the feeder 130 inputs the radio frequency signal, the second branch 123 feeds the ground branch 124 by way of coupling, and the length of the ground branch 124 can be reduced while ensuring the length of the low frequency radiating arm 126, so as to avoid that the length of the second branch 123 is too long and occupies a large clearance area 111.

It is worth mentioning that the first slit 140 is 0.5-1.5 times the width of the ground branch 124, and for example, when the width of the ground branch 124 is 2mm, the width of the first slit 140 may be 1-3 mm. The width of the second slit 150 is 0.1-0.5 times the width of the second branch 123. For example, when the width of the second branch 123 is 1mm, the width of the second slit 150 may be 0.1-0.5 mm. Setting the width of the second slot 150 to be 0.1-0.5 times the width of the second branch 123 facilitates the processing of the second slot 150 and ensures the reliability of the slot coupling between the second branch 123 and the ground branch 124. It is worth mentioning that during the assembly of the antenna assembly, a worker may adjust a specific frequency of the low frequency signal by adjusting the overall length of the second branch 123, adjust a degree of resonance between the second branch 123 and the ground branch 124 by adjusting the length of the second slot 150, and specifically, when it is required to adjust the degree of resonance between the second branch 123 and the ground branch 124, may be implemented by adjusting a specific length of the first section 1231 of the second branch 123 or by adjusting a specific length of the ground branch 124.

The main leg 121 has a length direction extending in a first direction, i.e., a vertical direction in fig. 2, and the first branch 122 has a length direction extending in a second direction, i.e., a horizontal direction in fig. 2, i.e., the first branch 122 is perpendicular to the main leg 121. A third gap 160 is disposed between the first branch 122 and the ground metal layer 110, and the third gap 160 is extended along the second direction, specifically, the inner clearance area 111 of the ground metal layer 110 is rectangular, and the first branch 122 is parallel to the top edge of the clearance area 111 and is disposed between the top edge of the clearance area 111 and the third gap 160. The first branch 122 is slot-coupled to the ground metal layer 110, i.e., the first branch 122 is slot-coupled to the ground metal layer 110 through the third slot 160. It is easily understood that the length of the third slot 160 is the same as that of the first branch 122, and those skilled in the art can adjust the length of the third slot 160 by adjusting the specific lengths of the main branch 121 and the first branch 122, so as to adjust the degree of resonance between the first branch 122 and the ground metal layer 110. By providing the first branch 122 extending in the second direction and providing the third slit 160 between the first branch 122 and the ground metal layer 110, the high-frequency radiating arm 125 can be coupled with the ground metal layer 110.

It is worth mentioning that the width of the third slit 160 is 0.1-0.5 times the width of the first branch 122. For example, when the width of the first branch 122 is 2mm, the width of the third slit 160 may be 0.2-1 mm. By setting the width of the third slot 160 to 0.1 to 0.5 times the width of the first branch 122, it is possible to secure the reliability of coupling between the high-frequency radiating arm 125 and the ground metal layer 110 while facilitating the processing of the third slot 160.

Table 1 provides an alternative parameter for the antenna assembly.

TABLE 1

	Length/mm	Width/mm
			Main support	8	2
First branch	5	2
			Second branch	12	1
Ground branch	20	2
			First gap	\	1.5
Second gap	\	0.3
			Third gap	\	0.2

As shown in table 1, the length of the first branch 122 is greater than the length of the second branch 123, while the width of the first branch 122 is greater than the width of the second branch 123. When the feeder line 130 inputs a radio frequency signal to the main branch 121, the first branch 122 and the main branch 121 generate a high frequency signal, and the frequency of the high frequency signal is 5-7 GHz; the part below the main branch 121, the second branch 123 and the third branch generate a low frequency signal having a frequency of 2.4-2.5 GHz. The width of the second slot 150 is 0.3 times the width of the second branch 123, which ensures that the second branch 123 can be reliably slot-coupled to the ground branch 124, and the width of the third slot 160 is 0.1 times the width of the first branch 122, which ensures that the first branch 122 can be reliably slot-coupled to the ground metal layer 110.

The width of the region where the ground metal layer 110 is gap-coupled to the radiation arm unit 120, i.e., the region where the ground metal layer 110 is located above the clearance region 111, is greater than the width of the low-frequency radiation arm 126, and the width of the region where the ground metal layer 110 is gap-coupled to the radiation arm unit 120 is greater than the width of the high-frequency radiation arm 125. The specific width of the slot coupling region between the ground metal layer 110 and the radiation arm unit 120 can be set by those skilled in the art according to actual needs. It is easy to understand that the ground metal layer 110 is coupled to the high frequency radiating arm 125 and the low frequency radiating arm 126, respectively, and when the width of the region where the ground metal layer 110 is coupled to the radiating arm unit 120 is greater than the width of the high frequency radiating arm 125 and the width of the low frequency radiating arm 126, the ground metal layer 110 can function as a bandwidth extension, thereby increasing the versatility of the antenna assembly provided by the present embodiment.

Table 2 shows the test results of the antenna assembly manufactured according to table 1 above.

TABLE 2

As shown in table 2, the antenna assembly manufactured according to the scheme provided in this example has an antenna efficiency of more than 50% when transmitting and receiving electromagnetic wave signals.

Fig. 4 shows a schematic structural diagram of another antenna component. As shown in fig. 4, it differs from fig. 2 in that: the ground metal layer 110 is provided therein with an isolation groove 112 and two clearance areas 111 symmetrically disposed at both sides of the isolation groove 112. Illustratively, the isolation groove 112 and the two clearance areas 111 are arranged side by side in the horizontal direction. For example, the isolation trench 112 is disposed in the middle of the ground metal layer 110, wherein one clearance area 111 is disposed on the left side of the ground metal layer 110, and the other clearance area 111 is disposed on the right side of the ground metal layer 110.

One radiation arm unit 120 is disposed inside each of the two clearance areas 111, and each radiation arm unit 120 is electrically connected to one feeder line 130. Illustratively, the two radiation arm units 120 are symmetrical with respect to the vertical center line of the isolation trench 112, and when the isolation trench 112 is located at the center of the ground metal layer 110, the two radiation arm units 120 are also symmetrical with respect to the vertical center line of the ground metal layer 110.

In one possible implementation, the two radiation arm units 120 may respectively include a main branch 121, a first branch 122 and a second branch 123, that is, the two radiation arm units 120 may generate a low frequency signal and a high frequency signal. That is, the two radiation arm units 120 define two almost identical antennas with the ground metal layer 110, respectively, for example, a left-side dashed box in the drawing illustrates the first antenna 170 located on the left side of the isolation slot 112, and a right-side dashed box in the drawing illustrates the second antenna 180 located on the right side of the isolation slot 112.

In fig. 4, the isolation trench 112 is shown as a long stripe structure, one end of which penetrates through the upper side of the ground metal layer 110, i.e. the top end of the isolation trench 112 is located at the top edge of the ground metal layer 110; the other end of the isolation slot 112 exceeds the feeding point where the radiation arm unit 120 is connected to the feeding line 130 along the length direction of the isolation slot 112. Illustratively, the feeding point of the radiation arm unit 120 connected to the feeding line 130 is located at the bottom end of the radiation arm unit 120, and when the bottom end of the isolation slot 112 exceeds the bottom end of the radiation arm unit 120, the isolation effect of the isolation slot 112 on the two radiation arm units 120 can be ensured.

In another possible implementation manner, the first antenna 170 and the second antenna 180 may also be disposed at an interval in the vertical direction, and for example, the first antenna 170 may be disposed below the second antenna 180, and in order to ensure an isolation effect between the first antenna 170 and the second antenna 180, the other end of the isolation slot 112 exceeds a feeding point of the first antenna 170, where the radiation arm unit 120 is connected to the feeder 130.

In the antenna assembly provided by the present embodiment, two clearance areas 111 are disposed in the ground metal layer 110, and one radiation arm unit 120 is disposed in each clearance area 111, so that the distance for the antenna assembly to transmit electromagnetic wave signals can be increased by increasing the number of the radiation arm units 120, thereby improving the quality of the electromagnetic wave signal transmission. In addition, the two radiation arm units 120 and the ground metal layer 110 respectively define two antennas, namely, the first antenna 170 and the second antenna 180, and the ground metal layer 110 is provided with the isolation slot 112 between the two radiation arm units 120, so that the isolation between the first antenna 170 and the second antenna 180 can be increased, and the mutual interference between the first antenna 170 and the second antenna 180 can be reduced.

Further, the width of the isolation groove 112 is greater than 3 mm. When the first antenna 170 and the second antenna 180 both generate high frequency signals, the isolation between the first antenna 170 and the second antenna 180 may be about-17 dB by the width of the isolation groove 112 being greater than 3mm, and when the first antenna 170 and the second antenna 180 both generate low frequency signals, the isolation between the first antenna 170 and the second antenna 180 may be about-30 dB by the width of the isolation groove 112 being greater than 3 mm.

Fig. 5 is a S parameter diagram of the antenna assembly in fig. 4, wherein L1 represents the S11 parameter of the first antenna 170, i.e., the return loss, L2 represents the S11 parameter of the second antenna 180, and L3 represents the S21 parameter of the isolation between the first antenna 170 and the second antenna 180.

As shown in FIG. 5, the S11 parameters for both antennas in the antenna assembly are around-10 to-15 dB at frequencies of 2.4GHz and 5.1GHz and around-10 to-20 dB at a frequency of 7 GHz. The S21 parameter between the two antennas is about-17 dB at a frequency of 2.4 GHz; the isolation between the two antennas is around-30 dB at frequencies of 5.1GHz and 7.2 GHz.

Fig. 6 is a system block diagram of a display device according to an embodiment of the present invention. As shown in fig. 6, this embodiment further provides a display device, where the display device may be a television, a smart television, a laser projection device, a display, an electronic whiteboard, or the like. The display device includes a display screen 2 and a communication module 1, and the present embodiment is not limited to the specific structure of the display screen 2, and for example, a liquid crystal display, an OLED display, or the like may be used as the display screen 2 of the display device.

The communication module 1 can be installed on the back of the display screen 2 and the communication module 1 is electrically connected with the display screen 2, for example, the display screen 2 is provided with a main board, and the communication module and the main board of the display screen 2 can be electrically connected through a signal line. The communication module 1 may be a WiFi communication module, and the communication module 1 is used to communicate with a control device or a server according to various communication protocol types. The communication module 1 includes the antenna assembly 10 and the chip, the chip is electrically connected to the antenna assembly 10 and the display screen 2, the antenna assembly 10 can receive or transmit electromagnetic waves, and the chip may be a network communication protocol chip or a near field communication protocol chip.

The user can use the control device to input a user instruction to control the display device, wherein the control device can be a remote controller or an intelligent device such as a mobile phone and a tablet computer, and when the control device is the intelligent device, the display device can be controlled by running an application program on the intelligent device. When the communication module 1 performs data communication with the server, the server can provide various contents to the display device to be displayed on the display screen 2 of the display device.

The display device provided by the embodiment may further include a detector, for example, the detector may be installed on the front side of the display screen 2 and electrically connected to the display screen 2, and the detector is used for acquiring an external environment or an external interaction signal. Illustratively, the detector includes a light receiver, i.e. a sensor for collecting the intensity of the ambient light, and when the intensity of the ambient light is high, the detector can increase the brightness of the image displayed on the display screen 2. The detector may also include a sound collector, such as a microphone, for receiving external sound.

According to the display device provided by the embodiment, due to the adoption of the antenna assembly, the installation area for installing the antenna does not need to be separately arranged on the outer side of the grounding metal layer on the PCB, so that the PCB of the display device can be made to be very small.

In the description of the present invention, it is to be understood that the terms "top," "bottom," "upper," "lower" (if any), and the like, as used herein, refer to an orientation or positional relationship as shown in the drawings, which are used for convenience in describing the present invention and to simplify description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The terms "first" and "second" in the description and claims of the present application and the description of the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An antenna assembly, comprising;

2. An antenna assembly according to claim 1, wherein the radiating arm unit comprises a main leg, a first branch and a second branch, a first end of the main leg being electrically connected to the feeder line, a second end of the main leg being electrically connected to the first branch, the main leg being electrically connected to a first end of the second branch at a position adjacent the first end;

the length of the low-frequency radiating arm is greater than that of the high-frequency radiating arm, and the tail end of the low-frequency radiating arm and the tail end of the high-frequency radiating arm are respectively coupled with the adjacent ground metal layer gaps.

3. The antenna assembly of claim 2, wherein the low frequency radiating arm further comprises a ground branch, a length direction of the ground branch extends along a first direction, a first slot extending along the first direction is disposed between the ground branch and the ground metal layer, and the ground branch is coupled with the ground metal layer;

the second branch comprises a first section and a second section, the length of the first section extends along a first direction, the second section extends along a second direction, a first end of the second section is electrically connected with the main branch, a second end of the second section is electrically connected with a first end of the first section, the first section is at least partially opposite to the ground branch, a second gap is arranged between the first section and the ground branch, the first section is coupled with the ground branch gap, and the first direction is perpendicular to the second direction.

4. The antenna assembly of claim 3, wherein the width of the second slot is 0.1-0.5 times the width of the second branch.

5. The antenna assembly of claim 2, wherein the main branch has a length direction extending in a first direction, the first branch has a length direction extending in a second direction, a third slot having a length direction extending in the second direction is disposed between the first branch and the ground metal layer, and the first branch is slot-coupled to the ground metal layer.

6. The antenna assembly of claim 5, wherein the width of the third slot is 0.1-0.5 times the width of the first branch.

7. The antenna assembly of claim 2, wherein the width of the area where the ground metal layer is coupled to the radiating arm unit slot is greater than the width of the low frequency radiating arm, and the width of the area where the ground metal layer is coupled to the radiating arm unit slot is greater than the width of the high frequency radiating arm.

8. The antenna assembly of any one of claims 1-7, wherein the ground metal layer is provided with an isolation slot and two clearance areas, the two clearance areas are symmetrically disposed on two sides of the isolation slot, each clearance area is internally provided with a radiation arm unit, and each radiation arm unit is electrically connected with one feed line;

the length direction of the isolation slot extends along a first direction, one end of the isolation slot penetrates through one side edge of the grounding metal layer, and the other end of the isolation slot exceeds a feeding point of the radiation arm unit connected with the feeder line along the length direction of the isolation slot.

9. The antenna assembly of claim 8, wherein the isolation slot has a width greater than 3 mm.

10. The display equipment is characterized by comprising a display screen and a communication module;

the communication module is electrically connected to the display screen, the communication module comprising the antenna assembly of any one of claims 1-9.