Dual-frequency antenna structure and display panel
阅读说明：本技术 双频天线结构及显示面板 (Dual-frequency antenna structure and display panel ) 是由 于海 曲峰 于 2020-07-17 设计创作，主要内容包括：本发明提供一种双频天线结构及显示面板,属于通信技术领域,其可解决现有天线结构存在部署困难以及无法满足同时覆盖多个使用频段要求的问题。本发明的双频天线结构,包括：第一天线单元,其设置在所述显示面板的显示面侧；第二天线单元,其包括至少一个子天线单元；所述子天线单元设置在所述边框的凹槽中且不与凹槽接触；参考电位板,设置在所述显示面板的基板的下表面；其中,所述第二天线单元与所述第一天线单元和所述参考电位板间均具有缝隙；所述第一天线单元与所述子天线单元、参考电位板形成第一电流回路,用于传输第一频段的电磁波信号；所述子天线单元和参考电位板形成第二电流回路,用于传输第二频段的电磁波信号。(The invention provides a dual-frequency antenna structure and a display panel, belongs to the technical field of communication, and can solve the problems that the conventional antenna structure is difficult to deploy and cannot meet the requirement of simultaneously covering a plurality of using frequency bands. The dual-band antenna structure of the present invention comprises: a first antenna unit provided on a display surface side of the display panel; a second antenna element comprising at least one sub-antenna element; the sub-antenna units are arranged in the grooves of the frame and are not in contact with the grooves; a reference potential plate disposed on a lower surface of a substrate of the display panel; wherein, the second antenna unit, the first antenna unit and the reference potential plate are all provided with gaps; the first antenna unit, the sub-antenna unit and the reference potential plate form a first current loop for transmitting electromagnetic wave signals of a first frequency band; the sub-antenna unit and the reference potential plate form a second current loop for transmitting electromagnetic wave signals of a second frequency band.)
1. A dual-frequency antenna structure is used for a mobile terminal, wherein the mobile terminal is provided with a display panel and a frame, and a groove is formed in the frame; the depth direction of the groove is vertical to the plane of the display panel; characterized in that the dual-band antenna structure comprises:
a first antenna unit provided on a display surface side of the display panel;
a second antenna element comprising at least one sub-antenna element; the sub-antenna units are arranged in the grooves of the frame and are not in contact with the grooves;
a reference potential plate disposed on a lower surface of a substrate of the display panel;
wherein, the second antenna unit, the first antenna unit and the reference potential plate are all provided with gaps; the first antenna unit, the sub-antenna unit and the reference potential plate form a first current loop for transmitting electromagnetic wave signals of a first frequency band; the sub-antenna unit and the reference potential plate form a second current loop for transmitting electromagnetic wave signals of a second frequency band.
2. The dual-band antenna structure of claim 1, wherein the first antenna element comprises a plurality of spaced apart patch antennas.
3. The dual-band antenna structure of claim 2, wherein the number of sub-antenna elements is plural; each of the sub-antenna units comprises a monopole antenna; the monopole antennas and the patch antennas are arranged in a one-to-one correspondence mode.
4. The dual-band antenna structure of claim 3, wherein the patch antenna comprises a mesh structure.
5. The dual-band antenna structure of claim 4, wherein the line width of the mesh structure is less than or equal to 5um, and the opening width of the mesh structure is greater than or equal to 200 um.
6. The dual-band antenna structure of claim 1, wherein the first antenna element is disposed in a non-display area on a display surface side of the display panel.
7. The dual-band antenna structure of claim 1, wherein an insulating material is filled between the frame groove and the sub-antenna unit.
8. The dual-band antenna structure of claim 1, wherein the first antenna element is made of any one of copper, gold, and silver.
9. The dual-band antenna structure of claim 1, wherein the operating frequency band of the dual-band antenna structure is 26.5-29.5GHz or 24.25-27.5 GHz.
10. A display panel comprising a dual-band antenna structure as claimed in any one of claims 1 to 9.
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a dual-frequency antenna structure and a display panel.
Background
The next generation mobile communication technology 5G (5th generation mobile communication technology) aims to provide better user experience through higher transmission rate, lower delay, stronger link robustness, and the like. The millimeter wave band has a larger bandwidth and higher rate characteristics, and therefore is suitable for being used as a high-frequency carrier of 5G.
The millimeter wave frequency band has the characteristics of high frequency, large bandwidth and the like, so that a plurality of challenges are brought to the realization of the future 5G mobile terminal antenna. At present, most terminals are only provided with two antennas, and in the future, the number of 5G millimeter wave terminal antennas can reach eight or more, so that an antenna array is formed. However, at present, antennas of multiple frequency bands such as 2G/3G/4G, bluetooth, WIFI (Wireless Fidelity), GPS (Global Positioning System), BDS (BeiDou Navigation satellite System, BeiDou satellite Navigation System), NFC (Near Field Communication), Wireless charging and the like of a terminal occupy most of the terminal antenna clearance area, which causes a problem that a 5G millimeter wave antenna array is difficult to deploy, and an antenna structure of the existing terminal cannot meet the requirement of simultaneously covering multiple use frequency bands of 5G millimeter waves.
Disclosure of Invention
The present invention is directed to at least one of the technical problems of the prior art, and provides a dual-band antenna structure and a display panel.
The technical scheme adopted for solving the technical problem is that the dual-frequency antenna structure is used for a mobile terminal, the mobile terminal is provided with a display panel and a frame, and a groove is formed in the frame; the depth direction of the groove is vertical to the plane of the display panel; the dual-band antenna structure includes:
a first antenna unit provided on a display surface side of the display panel;
a second antenna element comprising at least one sub-antenna element; the sub-antenna units are arranged in the grooves of the frame and are not in contact with the grooves;
a reference potential plate disposed on a lower surface of a substrate of the display panel;
wherein, the second antenna unit, the first antenna unit and the reference potential plate are all provided with gaps; the first antenna unit, the sub-antenna unit and the reference potential plate form a first current loop for transmitting electromagnetic wave signals of a first frequency band; the sub-antenna unit and the reference potential plate form a second current loop for transmitting electromagnetic wave signals of a second frequency band.
Optionally, the first antenna unit includes a plurality of patch antennas arranged at intervals.
Optionally, the number of the sub-antenna units is multiple; each of the sub-antenna units comprises a monopole antenna; the monopole antennas and the patch antennas are arranged in a one-to-one correspondence mode.
Optionally, the patch antenna comprises a mesh structure.
Optionally, the line width of the grid structure is less than or equal to 5um, and the opening width of the grid structure is greater than or equal to 200 um.
Alternatively, the first antenna unit is disposed in a non-display region on the display surface side of the display panel.
Optionally, an insulating material is filled between the frame groove and the sub-antenna unit.
Optionally, the first antenna element is made of any one of copper, gold, and silver.
Optionally, an operating frequency band of the dual-band antenna structure is 26.5-29.5GHz or 24.25-27.5 GHz.
The technical scheme adopted for solving the technical problem of the invention is a display panel which comprises the dual-frequency antenna structure.
Drawings
Fig. 1 is a schematic diagram of a dual-band antenna structure according to an embodiment of the present invention;
fig. 2 is a side view of a dual-band antenna structure according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a patch antenna according to an embodiment of the present invention;
fig. 4 is a top view of a relationship between a reference potential plate and a second antenna unit according to an embodiment of the present invention.
Wherein the reference numerals are: 1. a first antenna element; 2. a second antenna element; 3. a display panel; 4. a frame; 5. a ground plate; 6. a groove; 11. a patch antenna; 22. a monopole antenna; d. the width of the opening.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The invention provides a dual-frequency antenna structure, which aims to solve the problems that multiple frequency band antennas of the existing terminal, such as 2G/3G/4G, Bluetooth, WIFI (Wireless Fidelity), GPS (Global positioning System), BDS (BeiDou Navigation Satellite Navigation System, China Beidou Satellite Navigation System), NFC (Near Field Communication), Wireless charging and the like, occupy most of terminal antenna clearance areas, so that a 5G millimeter wave antenna array is difficult to deploy, and the antenna structure of the existing terminal cannot meet the requirement of simultaneously covering multiple using frequency bands of 5G millimeter waves.
Referring to fig. 1 and 2, a dual-band antenna structure for a mobile terminal is shown, in which the conventional mobile terminal has a display panel 3 and a bezel 4, wherein the display panel 3 is of various types, and in this embodiment, the display panel is an LCD display panel or a rigid OLED display panel. In order to improve the radiation characteristic of the dual-frequency antenna structure, the frame 4 is made of metal. As shown in fig. 1 and 2, the dual band antenna structure includes a first antenna element 1, a second antenna element 2, and a reference potential plate. The embodiment of the present invention is described by taking a reference potential plate as the
In this embodiment, a gap is formed between each
Specifically, since the
In the present embodiment, the
In this embodiment, as shown in fig. 1, the number of the
In some embodiments, a
In the present embodiment, after the display panel 3 is manufactured, the
In some embodiments, in order to improve the antenna radiation directivity, a metal back plate of the mobile terminal may be used as the
In this embodiment, the
In the embodiment of the present invention, the first antenna unit and the second antenna unit of the dual-band antenna structure simultaneously operate in different frequency bands, and the dual-band antenna structure can simultaneously cover the n257(26.5-29.5GHz) and n258(24.25-27.5GHz) operating frequency bands specified by the 3GPP (3rd generation partnership Project) network by adjusting the parameters of the first antenna unit and the parameters of the second antenna unit. Specifically, the first antenna unit can work in an n257(26.5-29.5GHz) working frequency band, and the second antenna unit works in an n258(24.25-27.5GHz) working frequency band; alternatively, the first antenna unit may operate in the n258(24.25-27.5GHz) operating band and the second antenna unit may operate in the n257(26.5-29.5GHz) operating band.
The present embodiment provides a display panel, which includes the dual-band antenna structure, so that the mobile terminal of the present embodiment can receive signals with a wide frequency band. The mobile terminal can be a mobile phone, a notebook, a PAD and the like.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
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