Antenna monomer and preparation method thereof, antenna module and display panel

Abstract

The invention provides an antenna monomer. The antenna monomer comprises a first dielectric layer, a first radiation layer and a second radiation layer, the first dielectric layer is provided with a first surface and a second surface which are arranged along the thickness direction of the first dielectric layer, and a connecting side surface for connecting the first surface and the second surface; wherein the first surface, the second surface and the connecting side surface of the first dielectric layer are coated with a bonding layer, the first radiation layer is arranged on one side, deviating from the first surface, of the bonding layer, and the second radiation layer is arranged on one side, deviating from the second surface, of the bonding layer; the orthographic projection of at least one of the first radiation layer and the second radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where the first surface is located.

Description

Technical Field

[0001] The present disclosure belongs to the field of display technology, and specifically relates to an antenna monomer and a preparation method thereof, an antenna module, and a display panel. Background Art

[0002] In the prior art, a composite structure of a liquid crystal (Panel) and a printed circuit board (PCB) or a large-area printed circuit board (PCB) & polymethacrylimide foam (PMI) is used, and then combined with a feed source, a polarization grid, and a drive control system to prepare a portable antenna.

[0003] There are at least the following problems in the prior art: 1. The process is complicated; 2. The liquid crystal (Panel) is easily bumped.

[0004] Based on the above problems, the inventor proposed a new antenna structure: using unequal size designs of printed circuit boards (PCB) and polymethacrylimide foam (PMI), controlling the overflow area, and leaving enough space for splicing, which can not only reduce the process steps but also ensure the splicing yield without affecting the antenna receiving area. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art, and to provide an antenna monomer and its preparation method, antenna module, and display panel that can reduce process steps, ensure splicing yield, and do not affect the antenna receiving area.

[0006] Preferably, the antenna monomer comprises a first dielectric layer, a first radiation layer and a second radiation layer; the first dielectric layer has a first surface and a second surface arranged along its thickness direction, and a connecting side surface connecting the first surface and the second surface; wherein,

[0007] The first surface, the second surface and the connecting side surface of the first dielectric layer are coated with an adhesive layer, the first radiation layer is arranged on a side of the adhesive layer away from the first surface, and the second radiation layer is arranged on a side of the adhesive layer away from the second surface;

[0008] The orthographic projection of at least one of the first radiation layer and the second radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where the first surface is located.

[0009] Preferably, when the orthographic projection of the first radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where its first surface is located, the orthographic projection of the second radiation layer on the plane where the first surface is located coincides with the orthographic projection of the first dielectric layer on the plane where its first surface is located.

[0010] Preferably, when the orthographic projection of the second radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where its first surface is located, the orthographic projection of the first radiation layer on the plane where the first surface is located coincides with the orthographic projection of the first dielectric layer on the plane where its first surface is located.

[0011] Preferably, when the orthographic projections of the first radiation layer and the second radiation layer on the plane where the first surface is located both cover the orthographic projection of the first dielectric layer on the plane where its first surface is located, the orthographic projections of the first radiation layer and the second radiation layer on the plane where the first surface is located overlap.

[0012] Preferably, when the orthographic projections of the first radiation layer and the second radiation layer on the plane where the first surface is located both cover the orthographic projection of the first dielectric layer on the plane where its first surface is located, the orthographic projections of the first radiation layer and the second radiation layer on the plane where the first surface is located partially overlap.

[0013] Preferably, the first radiation layer and the second radiation layer both include printed circuit boards.

[0014] Preferably, the first dielectric layer comprises polymethacrylimide foam.

[0015] Preferably, the bonding layer comprises an optical adhesive film.

[0016] Preferably, the present disclosure also provides a method for preparing an antenna monomer, which comprises:

[0017] A first radiation layer, a first dielectric layer, and a second radiation layer are provided; the first dielectric layer has a first surface and a second surface arranged along a thickness direction thereof, and a connecting side surface connecting the first surface and the second surface;

[0018] Apply the optical adhesive film on the first surface and the second surface of the first dielectric layer;

[0019] The first radiation layer is attached to one side of the first surface of the first dielectric layer, and the second radiation layer is attached to one side of the second surface of the first dielectric layer;

[0020] The optical adhesive film in the overflowed adhesive area is polished off to form the antenna unit.

[0021] Preferably, the step of laminating the first radiation layer on the first surface side of the first dielectric layer and laminating the second radiation layer on the second surface side of the first dielectric layer comprises:

[0022] The first radiation layer is placed on one side of the first surface of the first dielectric layer and pressed so that part of the optical adhesive film overflows to the connecting side surface of the first dielectric layer;

[0023] The second radiation layer is placed on one side of the second surface of the first dielectric layer and squeezed so that part of the optical adhesive film overflows to the connecting side of the first dielectric layer; wherein,

[0024] The optical adhesive film and the overflow adhesive on the first surface and the second surface of the first dielectric layer cover the first dielectric layer;

[0025] The orthographic projection of at least one of the first radiation layer and the second radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where the first surface is located.

[0026] Preferably, the antenna unit adopts the above-mentioned antenna unit.

[0027] Preferably, the present disclosure further provides a display panel, which comprises a display module and an antenna module arranged on the light emitting surface side of the display module; wherein,

[0028] The antenna module adopts the above-mentioned antenna module. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1a A schematic structural diagram of step S11 in the process of preparing an antenna unit provided in the present disclosure;

[0030] Figure 1b A schematic structural diagram of step S12 in the process of preparing an antenna unit provided in the present disclosure;

[0031] Figure 1c A schematic structural diagram of step S11 in the process of preparing an antenna unit provided in the present disclosure;

[0032] Figure 1d A schematic diagram of the structure of an antenna unit provided by the present disclosure;

[0033] Figure 2 A schematic diagram of the structure of another antenna unit provided by the present disclosure;

[0034] Figure 3 A schematic diagram of the structure of another antenna unit provided by the present disclosure;

[0035] Figure 4 A schematic diagram of the structure of another antenna unit provided by the present disclosure;

[0036] Figure 5 A schematic diagram of the structure of another antenna unit provided by the present disclosure;

[0037] Figure 6 A schematic diagram of a three-dimensional structure of an antenna unit provided in the present disclosure;

[0038] Figure 7 A schematic diagram of the structure of an antenna module provided by the present disclosure;

[0039] Figure 8 A schematic structural diagram of a display panel provided by the present invention.

[0040] The figures are marked as follows: 1. first dielectric layer; 2. first radiation layer; 3. second radiation layer; 4. bonding layer; 401. unpolished bonding layer; 5. liquid crystal; 6. bracket; 100. antenna module; 200. display panel. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention / invention, the present invention / invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] In the first aspect, the embodiment of the present disclosure provides an antenna monomer 10, which includes: a first dielectric layer 1, a first radiation layer 2, and a second radiation layer 3, wherein the first dielectric layer 1 has a first surface and a second surface arranged along its thickness direction, and a connecting side surface connecting the first surface and the second surface; wherein the first surface, the second surface, and the connecting side surface of the first dielectric layer 1 are coated with an adhesive layer 4, the first radiation layer 2 is arranged on the side of the adhesive layer 4 away from the first surface, and the second radiation layer 3 is arranged on the side of the adhesive layer 4 away from the second surface; the orthographic projection of at least one of the first radiation layer 2 and the second radiation layer 3 in the plane where the first surface is located covers the orthographic projection of the first dielectric layer 1 in the plane where the first surface is located. Since the orthographic projection of at least one of the first radiation layer 2 and the second radiation layer 3 in the embodiment of the present disclosure in the plane where the first surface is located covers the orthographic projection of the first dielectric layer 1 in the plane where the first surface is located. That is to say, the size of at least one of the first radiation layer 2 and the second radiation layer 3 is larger than the size of the first dielectric layer 1, at this time, the edge of at least one of the first radiation layer 2 and the second radiation layer 3 exceeds the edge of the first dielectric layer 1, and defines the overflow area. Therefore, an optical adhesive film is coated on the first surface and the second surface of the first dielectric layer 1, and then the optical adhesive film is squeezed to the connecting side of the first dielectric layer 1 through a lamination process, so that the optical adhesive film fills the overflowing adhesive area and covers the first dielectric layer 1, thereby preventing water vapor from corroding the bonding interface. Compared with the prior art, the step of applying ultraviolet curing glue (UV) is reduced, and the splicing yield is ensured without affecting the antenna receiving area.

[0044] For example, Figure 2 As shown, the orthographic projection of the first radiating layer 2 of the antenna monomer 10 on the plane where the first surface is located covers the orthographic projection of the first dielectric layer 1 on its first surface, and the orthographic projection of the second radiating layer 3 on the first surface coincides with the orthographic projection of the first dielectric layer 1 on the plane where the first surface is located. In other words, the size of the first dielectric layer 1 is equal to the size of the second radiating layer 3, and the size of the first radiating layer 2 is larger than the size of the first dielectric layer 1 and the second radiating layer 3. Among them, the edge of the first radiating layer 2 can be 0.1-0.5mm wider than the edge of the first dielectric layer 1.

[0045] For example, Figure 3 As shown, the orthographic projection of the second radiation layer 3 of the antenna monomer 10 on the plane where the first surface is located covers the orthographic projection of the first dielectric layer 1 on its first surface, and the orthographic projection of the first radiation layer 2 on the first surface coincides with the orthographic projection of the first dielectric layer 1 on the plane where the first surface is located. In other words, the size of the first radiation layer 2 is equal to the size of the first dielectric layer 1, and the size of the second radiation layer 3 is larger than the size of the first radiation layer 2 and the first dielectric layer 1. Among them, the edge of the second radiation layer 3 can be 0.1-0.5mm wider than the edge of the first dielectric layer 1.

[0046] For example, Figure 1c As shown, the orthographic projections of the first radiation layer 2 and the second radiation layer 3 of the antenna monomer 10 on the plane where the first surface is located both cover the orthographic projections of the first dielectric layer 1 on the plane where the first surface is located, and the orthographic projections of the first radiation layer 2 and the second radiation layer 3 on the plane where the first surface is located coincide with each other. In other words, the size of the first radiation layer 2 is equal to the size of the second radiation layer 3, and the sizes of the first radiation layer 2 and the second radiation layer 3 are both larger than the first dielectric layer 1. Among them, the edges of the first radiation layer 2 and the second radiation layer 3 can be 0.1-0.5mm wider than the edges of the first dielectric layer 1.

[0047] For another example, the orthographic projections of the first radiating layer 2 and the second radiating layer 3 of the antenna monomer 10 on the plane where the first surface is located both cover the orthographic projection of the first dielectric layer 1 on the plane where the first surface is located, and the orthographic projections of the first radiating layer 2 and the second radiating layer 3 on the plane where the first surface is located partially overlap. That is, the size relationship between the first dielectric layer 1, the first radiating layer 2, and the second radiating layer 3 may include:

[0048] The size of the first radiation layer 2 is larger than that of the second radiation layer 3, and the size of the second radiation layer 3 is larger than that of the first dielectric layer 1. Figure 4 As shown, the edge of the first radiation layer 2 may be 0.1-0.5 mm wider than the edge of the second radiation layer 3, and the edge of the second radiation layer 3 may be 0.1-0.5 mm wider than the edge of the first dielectric layer 1;

[0049] Alternatively, the size of the second radiation layer 3 is larger than that of the first radiation layer 2, and the size of the first radiation layer 2 is larger than that of the first dielectric layer 1. Figure 5 As shown, the edge of the second radiation layer 3 may be 0.1-0.5 mm wider than the edge of the first radiation layer 2 , and the edge of the first radiation layer 2 may be 0.1-0.5 mm wider than the edge of the first dielectric layer 1 .

[0050] In some examples, the first radiation layer 2 and the second radiation layer 3 both include but are not limited to a printed circuit board (PCB). That is, the antenna unit is a PCB antenna.

[0051] In some examples, the first dielectric layer 1 includes, but is not limited to, polymethacrylimide foam (PMI).

[0052] In some examples, the bonding layer 4 includes, but is not limited to, an optical adhesive film (OCA).

[0053] A method for preparing the antenna unit 10 is provided below. The method specifically comprises the following steps:

[0054] S11, providing a first dielectric layer 1, a first radiation layer 2, and a second radiation layer 3, such as Figure 1aAs shown; the first dielectric layer 1 has a first surface and a second surface arranged along its thickness direction, and a connecting side surface connecting the first surface and the second surface.

[0055] The antenna unit may be arranged on the light emitting surface side of the display panel. In this case, the effective area of ​​the first dielectric layer 1, the first radiation layer 2 and the second radiation layer 3 must not be less than the display area of ​​the display panel.

[0056] S12, applying an optical adhesive film (OCA) on the first surface and the second surface of the first dielectric layer 1, such as Figure 1b shown.

[0057] Among them, the optical adhesive film (OCA) has the advantages of high clarity, high light transmittance, high adhesion, water and high temperature resistance, and no yellowing and deterioration after long-term use, so it is very suitable for the preparation of antennas. The thickness of the optical adhesive film (OCA) applied in this embodiment can be 25μm or 50μm.

[0058] S13, on the first dielectric layer 1 after completing step S12, a first radiation layer 2 is attached to the first surface side of the first dielectric layer 1, and a second radiation layer 3 is attached to the second surface side of the first dielectric layer 1, such as Figure 1c shown.

[0059] In some examples, step S13 may specifically include: placing a first radiation layer 2 on the first surface side of the first dielectric layer 1 and squeezing it so that part of the optical adhesive film (OCA) overflows to the connecting side of the first dielectric layer 1; placing a second radiation layer 3 on the second surface side of the first dielectric layer 1 and squeezing it so that part of the optical adhesive film (OCA) overflows to the connecting side of the first dielectric layer 1.

[0060] At this time, the optical adhesive film (OCA) and the overflow adhesive on the first surface and the second surface of the first dielectric layer 1 cover the first dielectric layer 1; the orthographic projection of at least one of the first radiation layer 2 and the second radiation layer 3 on the plane where the first surface is located covers the orthographic projection of the first dielectric layer 1 on the plane where its first surface is located.

[0061] By squeezing the first radiation layer 2 and the second radiation layer 3, the optical adhesive film of the first dielectric layer 1 on the first surface and the second surface can overflow to the connecting side of the first dielectric layer 1, so that all the optical adhesive films cover the first dielectric layer 1, preventing water vapor from corroding the bonding interface. Compared with the prior art, the step of applying ultraviolet curing glue (UV) is reduced.

[0062] S14, on the workpiece after completing step S13, polish off the optical adhesive film (OCA) in the overflow area to form the antenna unit 10, such as Figure 1d shown.

[0063] In some examples, the glue overflow area can be polished by mechanical polishing or laser sintering.

[0064] At this point, the preparation of the antenna unit in this embodiment is completed. Since it uses the unequal size design of the printed circuit board (PCB) & polymethacrylimide foam (PMI), the overflow area can be controlled and sufficient splicing space can be left, which can not only reduce the process steps, but also ensure the splicing yield, and at the same time does not affect the antenna receiving area.

[0065] In a second aspect, the present disclosure provides an antenna module 100, which includes the above-mentioned antenna units 10 arranged in an array, such as Figure 7 shown.

[0066] In some examples, the antenna module 100 may also include: a liquid crystal (Panel) 5, a feed source, a polarization grid, a drive control system, etc. Figure 7 For ease of description, only the liquid crystal structure 5 is drawn. Since the antenna module 100 in this embodiment includes the antenna monomer 10, its process is simple, the splicing yield is high, and the collision of the liquid crystal (Panel) and the erosion of the bonding interface by water vapor can be effectively prevented.

[0067] The antenna module in this embodiment can be a transceiver antenna, that is, it can realize both the transmission of electromagnetic wave signals and the reception of electromagnetic wave signals. Of course, for the antenna module, it is not limited to the above structure, but also includes a transceiver unit, a radio frequency transceiver, a signal amplifier, a power amplifier, and a filtering unit. The antenna in the communication device can be used as a transmitting antenna or a receiving antenna. Among them, the transceiver unit may include a baseband and a receiving end, and the baseband provides a signal of at least one frequency band, for example, 2G signals, 3G signals, 4G signals, 5G signals, etc., and sends a signal of at least one frequency band to the radio frequency transceiver. After the antenna in the communication system receives the signal, it can be processed by the filtering unit, the power amplifier, the signal amplifier, and the radio frequency transceiver and then transmitted to the receiving end in the transceiver unit. The receiving end can be, for example, a smart gateway.

[0068] Furthermore, the RF transceiver is connected to the transceiver unit, and is used to modulate the signal sent by the transceiver unit, or to demodulate the signal received by the antenna and transmit it to the transceiver unit. Specifically, the RF transceiver may include a transmitting circuit, a receiving circuit, a modulation circuit, and a demodulation circuit. After the transmitting circuit receives various types of signals provided by the baseband, the modulation circuit can modulate the various types of signals provided by the baseband and then send them to the antenna. The antenna receives the signal and transmits it to the receiving circuit of the RF transceiver. The receiving circuit transmits the signal to the demodulation circuit, and the demodulation circuit demodulates the signal and transmits it to the receiving end.

[0069] Furthermore, the RF transceiver is connected to a signal amplifier and a power amplifier, and the signal amplifier and the power amplifier are connected to a filter unit, and the filter unit is connected to at least one antenna. In the process of sending signals in the communication system, the signal amplifier is used to improve the signal-to-noise ratio of the signal output by the RF transceiver and then transmit it to the filter unit; the power amplifier is used to amplify the power of the signal output by the RF transceiver and then transmit it to the filter unit; the filter unit may specifically include a duplexer and a filter circuit, and the filter unit combines the signals output by the signal amplifier and the power amplifier and filters out the clutter before transmitting them to the antenna, and the antenna radiates the signal. In the process of receiving signals in the communication system, the antenna receives the signal and transmits it to the filter unit, and the filter unit filters out the clutter from the signal received by the antenna and then transmits it to the signal amplifier and the power amplifier, and the signal amplifier amplifies the signal received by the antenna to increase the signal-to-noise ratio; the power amplifier amplifies the power of the signal received by the antenna. The signal received by the antenna is processed by the power amplifier and the signal amplifier and then transmitted to the RF transceiver, and the RF transceiver then transmits it to the transceiver unit.

[0070] In some examples, the signal amplifier may include various types of signal amplifiers, such as a low noise amplifier, which is not limited herein.

[0071] In some examples, the antenna module provided by the embodiments of the present disclosure also includes a power management unit, which is connected to a power amplifier to provide the power amplifier with a voltage for amplifying a signal.

[0072] In a third aspect, the embodiment of the present disclosure provides a display panel 200, which includes a display module and the above-mentioned antenna module arranged on the light-emitting surface side of the display module, such as Figure 8 shown.

[0073] In some examples, the display module may include a bracket 6. The bracket 6 is disposed on a side of the antenna module 100 close to the liquid crystal 5, and is used to combine the antenna monomer 10, the liquid crystal (Panel) 5, the feed source, the polarization grid, and the drive control system in the antenna module 100 to form a display panel 200.

[0074] Among them, the display panel 200 in this embodiment can be used in disaster relief, disaster reduction, exploration and handling of emergencies, timely feedback of on-site conditions, and receiving rear command information. It can also be used in military, radio communications, electronic countermeasures and other fields.

[0075] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An antenna monomer, comprising a first dielectric layer, a first radiation layer, and a second radiation layer; the first dielectric layer has a first surface and a second surface arranged along its thickness direction, and a connecting side surface connecting the first surface and the second surface; wherein, The first surface, the second surface and the connecting side surface of the first dielectric layer are coated with an adhesive layer, the first radiation layer is arranged on a side of the adhesive layer away from the first surface, and the second radiation layer is arranged on a side of the adhesive layer away from the second surface; The orthographic projection of at least one of the first radiation layer and the second radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where the first surface is located.

2. The antenna unit according to claim 1, wherein: When the orthographic projection of the first radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where its first surface is located, the orthographic projection of the second radiation layer on the plane where the first surface is located coincides with the orthographic projection of the first dielectric layer on the plane where its first surface is located.

3. The antenna unit according to claim 1, wherein: When the orthographic projection of the second radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where its first surface is located, the orthographic projection of the first radiation layer on the plane where the first surface is located coincides with the orthographic projection of the first dielectric layer on the plane where its first surface is located.

4. The antenna unit according to claim 1, wherein: When the orthographic projections of the first radiation layer and the second radiation layer on the plane where the first surface is located both cover the orthographic projection of the first dielectric layer on the plane where its first surface is located, the orthographic projections of the first radiation layer and the second radiation layer on the plane where the first surface is located overlap.

5. The antenna unit according to claim 1, wherein: When the orthographic projections of the first radiation layer and the second radiation layer on the plane where the first surface is located both cover the orthographic projection of the first dielectric layer on the plane where its first surface is located, the orthographic projections of the first radiation layer and the second radiation layer on the plane where the first surface is located partially overlap.

6. The antenna unit according to any one of claims 1 to 5, wherein: The first radiation layer and the second radiation layer both include printed circuit boards.

7. The antenna unit according to any one of claims 1 to 5, wherein: The first dielectric layer includes polymethacrylimide foam.

8. The antenna unit according to any one of claims 1 to 5, wherein: The bonding layer includes an optical adhesive film.

9. A method for preparing an antenna monomer, comprising: Providing a first radiation layer, a first dielectric layer, and a second radiation layer; The first dielectric layer has a first surface and a second surface arranged along a thickness direction thereof, and a connecting side surface connecting the first surface and the second surface; Apply the optical adhesive film on the first surface and the second surface of the first dielectric layer; The first radiation layer is attached to one side of the first surface of the first dielectric layer, and the second radiation layer is attached to one side of the second surface of the first dielectric layer; The optical adhesive film in the overflowed adhesive area is polished off to form the antenna unit.

10. The preparation method according to claim 9, wherein: The step of laminating the first radiation layer on the first surface side of the first dielectric layer and laminating the second radiation layer on the second surface side of the first dielectric layer comprises: The first radiation layer is placed on one side of the first surface of the first dielectric layer and pressed so that part of the optical adhesive film overflows to the connecting side surface of the first dielectric layer; The second radiation layer is placed on one side of the second surface of the first dielectric layer and squeezed so that part of the optical adhesive film overflows to the connecting side of the first dielectric layer; wherein, The optical adhesive film and the overflow adhesive on the first surface and the second surface of the first dielectric layer cover the first dielectric layer; The orthographic projection of at least one of the first radiation layer and the second radiation layer on the plane where the first surface is located covers the orthographic projection of the first dielectric layer on the plane where the first surface is located.

11. An antenna module, comprising antenna units arranged in an array, wherein: The antenna unit is the antenna unit described in any one of claims 1 to 8.

12. A display panel comprising a display module and an antenna module arranged on the light emitting surface side of the display module; wherein: The antenna module adopts the antenna module described in claim 11.

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