CN114497981B - Antenna, display module and display device - Google Patents
Antenna, display module and display deviceInfo
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- CN114497981B CN114497981B CN202210109032.XA CN202210109032A CN114497981B CN 114497981 B CN114497981 B CN 114497981B CN 202210109032 A CN202210109032 A CN 202210109032A CN 114497981 B CN114497981 B CN 114497981B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Details Of Aerials (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
本公开提供一种天线、显示模组及显示装置，属于显示技术领域，其可解决现有的天线影响视觉效果的问题。本公开的天线，具有辐射区及围绕辐射区的非辐射区；天线包括：多个天线振子；天线振子包括：相对设置的第一衬底和第二衬底、位于第一衬底背离第二衬底一侧的接地层、及位于第二衬底背离第一衬底一侧的辐射层；接地层包括：交叉设置的多条第一金属线；辐射层包括：交叉设置的多条第二金属线；第二金属线在第一衬底上的正投影与第一金属线在第一衬底上的正投影至少部分交叠；第二金属线仅设置在辐射区，第一金属线设置在辐射区和非辐射区。
This disclosure provides an antenna, a display module, and a display device, belonging to the field of display technology, which can solve the problem of existing antennas affecting visual effects. The antenna of this disclosure has a radiating region and a non-radiating region surrounding the radiating region; the antenna includes: a plurality of antenna elements; each antenna element includes: a first substrate and a second substrate disposed opposite to each other, a ground layer located on the side of the first substrate facing away from the second substrate, and a radiating layer located on the side of the second substrate facing away from the first substrate; the ground layer includes: a plurality of first metal lines arranged in a cross configuration; the radiating layer includes: a plurality of second metal lines arranged in a cross configuration; the orthographic projections of the second metal lines on the first substrate at least partially overlap with the orthographic projections of the first metal lines on the first substrate; the second metal lines are only disposed in the radiating region, and the first metal lines are disposed in both the radiating and non-radiating regions.
Description
Technical Field
The disclosure belongs to the technical field of display, and particularly relates to an antenna, a display module and a display device.
Background
The wireless screen throwing is also called wireless same screen, flying screen and screen sharing, and is a technical method for displaying the picture of one mobile device A on the screen of another display device B in real time. Currently, the mainstream wireless screen-throwing protocol comprises two protocols of apple airlay and android Miracast, and most television set-top boxes, intelligent televisions and the like currently support the two data transmission protocols. But are still dependent on essentially wireless transmission capabilities in WiFi environments. However, even the currently mainstream WiFi 6 protocol still has a transmission rate inferior to that of the wired HDMI 1.0, and most of the protocols are currently used to still use the WiFi 2.4/5 protocol, so that the conventional wireless screen-casting is easy to generate problems of time delay, image quality loss, and screen-churning.
Millimeter wave communication, which is an important technology, has ultra-high speed, ultra-large bandwidth, ultra-low latency far exceeding WiFi 2.4/5, and high interference immunity, has been widely used in various fields. However, when the millimeter wave antenna is applied to the display technology, the display screen in the display device is prone to the problems of moire, poor antenna visual effect, low antenna gain and the like.
Disclosure of Invention
The disclosure aims to at least solve one of the technical problems in the prior art, and provides an antenna, a display module and a display device.
In a first aspect, an embodiment of the disclosure provides an antenna having a radiation area and a non-radiation area surrounding the radiation area, the antenna comprising a plurality of antenna elements, wherein the antenna elements comprise a first substrate and a second substrate which are oppositely arranged, a grounding layer positioned on one side of the first substrate away from the second substrate, and a radiation layer positioned on one side of the second substrate away from the first substrate;
The orthographic projection of the second metal wire on the first substrate coincides with the orthographic projection of the first metal wire on the first substrate;
The second metal wire is only arranged in the radiation area, and the first metal wire is arranged in the radiation area and the non-radiation area.
Optionally, the orthographic projection of the second metal line on the first substrate is completely coincident with the orthographic projection of the second metal line on the first substrate.
Optionally, the radiation layer further comprises a feed part electrically connected with the second metal wire, and the antenna element further comprises a first binding pad positioned at one side of the second substrate away from the first substrate;
the first bonding pad is electrically connected with the feeding portion.
Optionally, the antenna element further comprises second binding pads positioned at two sides of the first binding pad;
The second binding pad is disconnected from the feeding portion.
Optionally, the first metal wires which are arranged in a crossing way form a first hollow structure, the second metal wires which are arranged in a crossing way form a second hollow structure, and the shapes of the first hollow structure and the second hollow structure are the same.
Optionally, the thickness of the first metal lines is 0.6-3 microns, the line width is 0.4-10 microns, and the distance between adjacent first metal lines is 100-200 microns;
the thickness of the second metal wire is 0.6-3 microns, the line width is 0.4-10 microns, and the distance between every two adjacent second metal wires is 100-200 microns.
Optionally, the materials of the first substrate and the second substrate comprise cycloolefin polymer or polyethylene terephthalate.
Optionally, the first metal wire in the plurality of antenna elements is an integrally formed structure.
In a second aspect, an embodiment of the present disclosure provides a display module, where the display module includes an antenna as provided above.
Optionally, the display module comprises an array substrate, a color film substrate and a first polaroid, wherein the array substrate and the color film substrate are oppositely arranged, and the first polaroid is positioned on one side of the color film substrate, which is away from the array substrate;
The first metal wire is positioned at one side of the color film substrate, which is close to the first polaroid;
the second metal wire is positioned at one side of the first polaroid, which is close to the color film substrate.
Optionally, the display module further comprises a first adhesive layer and a second adhesive layer;
the first adhesive layer is positioned between the first metal wire and the color film substrate;
the second adhesive is located between the first substrate and the second substrate.
Optionally, the display module further comprises a second polarizer;
The second polaroid is positioned at one side of the array substrate, which is away from the color film substrate.
Optionally, the display module further comprises a radio frequency module;
the radio frequency module is in binding connection with the first binding pad and the second binding pad through flexible transmission lines.
Optionally, the transmission line comprises a liquid crystal high polymer substrate and a metal signal line positioned on the liquid crystal high polymer substrate.
In a third aspect, an embodiment of the present disclosure provides a display device, where the display device includes a display module as described above.
Drawings
Fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present disclosure;
Fig. 2 is a schematic structural diagram of an antenna element in the antenna shown in fig. 1;
FIG. 3 is a schematic cross-sectional view of the antenna element shown in FIG. 2 along the direction A-A';
fig. 4 is a standing wave characteristic diagram of an antenna according to an embodiment of the present disclosure;
Fig. 5 is a schematic structural diagram of a display module according to an embodiment of the disclosure;
fig. 6 is a schematic structural diagram of another display module according to an embodiment of the disclosure;
Fig. 7 is a schematic structural diagram of a transmission line in a display module according to an embodiment of the disclosure.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present disclosure, the present disclosure will be described in further detail with reference to the accompanying drawings and detailed description.
Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms 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 elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Currently, due to the continuous development of the fifth generation communication technology (5G), millimeter wave communication, which is an important technology, has been widely used in various fields due to its characteristics of ultra-high speed, ultra-large bandwidth, ultra-low delay, high interference resistance, and the like. For example, in the wireless screen throwing process, compared with WiFi, the millimeter wave communication can completely realize the effects of ultralow delay, lossless image quality and no cartoon screen. However, when the millimeter wave antenna is applied to the display technology, the display screen in the display device is prone to the problems of moire, poor antenna visual effect, low antenna gain and the like. In order to solve at least one of the above technical problems, an embodiment of the present disclosure provides an antenna, a display module, and a display device, and the antenna, the display module, and the display device provided by the embodiment of the present disclosure will be described in further detail below with reference to the accompanying drawings and detailed description.
Fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present disclosure, and as shown in fig. 1, the antenna has a radiation area and a non-radiation area surrounding the radiation area, and the antenna includes a plurality of antenna elements 10. Fig. 2 is a schematic structural view of an antenna element in the antenna shown in fig. 1, fig. 3 is a schematic sectional view of the antenna element shown in fig. 2 along A-A' direction, as shown in fig. 2 and 3, the antenna element 10 includes a first substrate 101 and a second substrate 102 which are disposed opposite to each other, a ground layer 103 disposed on a side of the first substrate 101 facing away from the second substrate 102, and a radiation layer 104 disposed on a side of the second substrate 102 facing away from the first substrate 101, the ground layer 103 includes a plurality of first metal wires 1031 disposed to intersect, the radiation layer 104 includes a plurality of second metal wires 1041 disposed to intersect, an orthographic projection of the second metal wires 1041 on the first substrate 101 at least partially overlaps an orthographic projection of the first metal wires 1031 on the first substrate 101, and the second metal wires 1041 are disposed only in a radiation area, the first metal wires 1031 are disposed in a radiation area and a non-radiation area.
The first substrate 101 and the second substrate 102 may be made of transparent materials, specifically, the transparent materials may be rigid transparent materials or flexible transparent materials, and may be reasonably selected according to actual needs. The first substrate 101 can effectively support the ground layer 103 formed on the first substrate, the second substrate 102 can effectively support the radiation layer 104 formed on the second substrate, meanwhile, a certain distance is reserved between the first substrate 101 and the second substrate 102, a certain distance is formed between the corresponding ground layer 103 and the radiation layer 104, short-circuiting between the ground layer 103 and the radiation layer 104 is avoided, and a magnetic field is formed between the ground layer 103 and the radiation layer 104, so that a signal radiation function is realized.
The ground layer 103 may be made of a plurality of first metal lines 1031 disposed in a crossing manner, and the material of the first metal lines 1031 may be specifically an alloy of one or more of copper (Cu), aluminum (Al), silver (Ag), nickel (Ni), molybdenum (Mo), and titanium (Ti). Specifically, the first metal line 1031 is made of copper in the disclosed embodiment. Since the line width of the first metal lines 1031 is smaller, the micron level can be achieved, and the plurality of first metal lines 1031 are arranged in a crossing manner, so that the ground layer 103 formed by the plurality of first metal lines 1031 arranged in a crossing manner can transmit light, and the ground layer 103 formed by the plurality of first metal lines 1031 arranged in a crossing manner can be in a transparent state.
The radiation layer 104 may be made of a plurality of second metal lines 1041 disposed in a crossing manner, and the material of the second metal lines 1041 may be specifically an alloy of one or more of copper (Cu), aluminum (Al), silver (Ag), nickel (Ni), molybdenum (Mo), and titanium (Ti). Specifically, the second metal line 1041 is made of copper in the disclosed embodiment. Since the line width of the second metal lines 1041 is smaller, the micron level can be achieved, and the plurality of second metal lines 1041 are arranged in a crossing manner, so that the radiation layer 104 formed by the plurality of second metal lines 1041 arranged in a crossing manner can transmit light, and the radiation layer 104 formed by the plurality of second metal lines 1041 arranged in a crossing manner can be in a transparent state.
In practical applications, the dimensions of the first metal lines 1031 and the second metal lines 1041 may be equal, for example, the line width of the metal lines, the distance between adjacent metal lines, etc., so that the front projection of the first hollow structure formed by the plurality of first metal lines 1031 on the first substrate 101 and the front projection of the second hollow structure formed by the second metal lines 1041 on the first substrate 101 at least partially overlap, which can avoid the shielding of the first metal lines 1031 and the second metal lines 1041 from the light due to the mutual intersection, and further ensure that the antenna has good light transmittance as a whole, so that the antenna is in a transparent state.
In the related art, only one radiation layer 104 is generally disposed in an antenna, and a metal back plate in a display device where the antenna is disposed is used as the ground layer 103, and the ground layer 103 is not separately disposed, however, due to the existence of an antenna structure in a display area of the display device, a display effect of the display device is often affected, for example, a moire or other defect occurs in a display screen, and in order to effectively reduce the moire or other defect, a blackening process is often performed in a non-radiation area of the antenna, for example, an edge of the radiation layer 104 is subjected to a line breaking process. After the radiation layer 104 is subjected to blackening treatment, although the occurrence of moire can be reduced, the visual effect is still affected by the frame of the blackening treatment, and meanwhile, the shape of the radiation layer 104 of the antenna is changed, so that the structure of the edge of the radiation layer 104 needs to be changed greatly, and unnecessary difficulty is brought to antenna design.
In the embodiment of the disclosure, the second metal line 1041 in the radiation layer 104 is only disposed in the radiation area, the area of the ground layer 103 is larger than the area of the radiation layer 104, the first metal line 1031 in the ground layer 103 extends from the radiation area to the non-radiation area, the ground layer 103 may be exposed from the edge of the radiation layer 104, and it is visually shown that the edge of the radiation layer 104 has been blackened, so as to satisfy the effect of effectively reducing moire. In terms of structure, since the actual blackening treatment is not performed on the radiation layer 104, the structure of the second metal line 1041 in the radiation layer 104 is not changed, the radiation performance of the antenna is not affected, and special designs such as blackening treatment are not required to be performed on the radiation layer 104 in the antenna process, so that the antenna design difficulty can be reduced, and the antenna design efficiency can be greatly improved.
In some embodiments, as shown in fig. 2, the orthographic projection of the second metal line 1041 on the first substrate 101 completely coincides with the orthographic projection of the second metal line 1031 on the first substrate 101.
In practical applications, the dimensions of the first metal line 1031 and the second metal line 1041 may be set to be completely equal, for example, the line width of the metal line, the distance between adjacent metal lines, etc., so that the second metal line 1041 and the first metal line 1031 may be completely overlapped, further avoiding shielding light by the first metal line 1031 and the second metal line 1041, making the ground layer 103 and the radiation layer 104 in the antenna be in a transparent state, and avoiding the influence of the antenna on the display screen of the display device.
In some embodiments, as shown in fig. 2, the radiation layer 104 further includes a feeding portion 1042 electrically connected to the second metal line 1041, the antenna element 10 further includes a first bonding pad 105 located on a side of the second substrate 102 facing away from the first substrate 101, and the first bonding pad 105 is electrically connected to the feeding portion 1042.
The feeding portion 1042 is connected to the second metal line 1041, and a signal can be inputted to the second metal line 1041 in the radiation layer 104 through the feeding portion 1042, so that an electromagnetic field is formed between the radiation layer 104 and the ground layer 103 to radiate the signal outwards. Of course, the radiation layer 104 may also receive an external signal, and the feeding unit 1042 may transmit the received signal to a display device or the like. The first board top pad 105 may be electrically connected to the power feeding portion 1042, which serves as a pin of the radiation layer 104, and may draw out a signal. In practical applications, other modules in the display device, such as a radio frequency module, may be bonded to the first bonding pad 15, so as to facilitate connection between the antenna structure and the other modules.
In some embodiments, as shown in fig. 2, the antenna element 10 further includes second bonding pads 106 located at both sides of the first bonding pad 105, and the second bonding pads 106 are disconnected from the feeding portion 1042.
On both sides of the first bonding pad 105, a second bonding pad 106 may be provided, the second bonding pad 106 being in a suspended state, which is not electrically connected with the power feeding portion 1042 in the radiation layer 104. Because the area of the first bonding pad 105 is smaller, the problem that the connection is not firm and the signal transmission effect is affected easily occurs when the bonding connection is performed with an external radio frequency module or the like. The second bonding pads 106 are located at two sides of the first bonding pad 105 and are arranged side by side with the first bonding pad 103, so that the bonding area can be increased, the bonding firmness can be improved, and effective transmission of signals is ensured. And the second bonding pad 106 is not electrically connected to the feeding terminal 1042 in the radiation layer 104, which does not affect the structure of the radiation layer 104, so that the process difficulty can be reduced.
It should be noted that the first bonding pad 105 and the second bonding pad 106 may be made of the same material by the same process, for example, the material of the first bonding pad 105 and the second bonding pad 106 may be specifically an alloy of one or more of copper (Cu), aluminum (Al), silver (Ag), nickel (Ni), molybdenum (Mo), and titanium (Ti). In the preparation process, a metal layer can be formed on the second substrate 102, and patterning processing is performed on the metal layer by adopting a one-time patterning process, so that the first bonding pad 105 and the second bonding pad 106 are formed, thus the process difficulty can be reduced, and the preparation cost can be saved.
In some embodiments, the first metal lines 1031 disposed in a crossing manner form a first hollow structure, the second metal lines 1041 disposed in a crossing manner form a second hollow structure, and the shapes of the first hollow structure and the second hollow structure are the same.
In the preparation process, a metal layer may be formed on the first substrate 101, and a patterning process is performed on the metal layer by using a one-time patterning process, so as to form a plurality of first metal lines 1031 and a first hollow structure in the ground layer 103. Similarly, the same process may be used to form the second metal line 1041 and the second hollow structure of the radiation layer 104 on the second substrate 102 with the same material. The shape of the first hollow structure and the shape of the second hollow structure can be completely the same, so that the shielding of the first metal wire 1031 and the second metal wire 1041 to light rays by the mutual intersection can be further avoided, and further, the antenna can be ensured to have good light transmission performance, so that the antenna is in a transparent state, and the influence of the antenna on a display picture is avoided. Specifically, the shapes of the first hollow structure and the second hollow structure may be diamond, square, rectangle, etc., and of course, may be other shapes, which are not listed here
In some embodiments, the first metal lines 1031 have a thickness of 0.6 to 3 microns, a line width of 0.4 to 10 microns, a distance between adjacent first metal lines 1031 of 100 to 200 microns, a thickness of 0.6 to 3 microns, a line width of 0.4 to 10 microns, and a distance between adjacent second metal lines 1042 of 100 to 200 microns.
The line width of the first metal lines 1031, the distance between adjacent first metal lines 1031, and the thickness of the first metal lines 1031 are all in the micrometer scale, and the distance between adjacent first metal lines 1031 is far greater than the line width of the first metal lines 1031, so that gaps between the plurality of first metal lines 1031 arranged in a crossing manner are large enough to avoid shielding of the first metal lines 1031 on light, and therefore the ground layer 103 formed by the first metal lines 1031 can be ensured to have good light transmittance. Similarly, the size of the second metal line 1041 is the same as the size of the first metal line 1031, so that the shielding of the first metal line 1031 and the second metal line 1041 to the light can be avoided, and the whole antenna can be ensured to have good light transmission performance, so that the antenna is in a transparent state.
In some embodiments, the materials of the first substrate 101 and the second substrate 102 each comprise a cyclic olefin polymer or polyethylene terephthalate.
The materials of the first substrate 101 and the second substrate 102 may be the same, and may be Cyclic Olefin Polymer (COP) or polyethylene terephthalate (PET), which have good light transmittance, so that the first substrate 101 and the second substrate 102 can be prevented from shielding light, and the overall light transmittance of the antenna is ensured, so that the antenna is in a transparent state.
In some embodiments, the first metal line 1031 in the plurality of antenna elements 10 is an integrally formed structure.
The first metal lines 1031 in the ground layer 103 of each antenna element 10 provide the same signal, i.e., the reference ground signal, and the reference ground signal is a stable signal, and the first metal lines 1031 in each antenna element 10 may be in an integrally formed structure, so as to uniformly input the reference ground signal to the first metal lines 1031 in each antenna element 10, so as to ensure effective transmission of the signal.
Specifically, the antenna provided by the embodiment of the present disclosure may be a millimeter wave antenna. The millimeter wave antenna can output signals with millimeter level, and compared with the antenna with microwave frequency band, the millimeter wave antenna has larger working bandwidth, higher gain and higher radiation efficiency, and the plurality of antenna elements 10 are arranged in the millimeter wave antenna, so that the radiation performance of the antenna can be further improved. Fig. 4 is a standing wave characteristic diagram of an antenna provided by the embodiment of the present disclosure, as shown in fig. 4, in a frequency band from 60GHz to 64GHz, standing wave ratios of the antenna are all less than 1.50, and it can be seen that the bandwidth of the antenna can reach 4GHz, and the matching degree is higher, so that better radiation performance can be achieved. Compared with the prior WiFi technology, the antenna provided by the embodiment of the disclosure has higher transmission efficiency, is more beneficial to signal transmission in a wireless screen-throwing scene, and avoids the problems of time delay, image quality loss, screen-churning and the like. It should be noted here that, in the embodiment of the present disclosure, the millimeter wave antenna size is 8.4mm×2.6mm (1.7λc×0.24λc, λc is the wavelength of the signal of the center frequency of the antenna).
The embodiment of the disclosure further provides a display module, fig. 5 is a schematic structural diagram of a display module provided by the embodiment of the disclosure, fig. 6 is a schematic structural diagram of another display module provided by the embodiment of the disclosure, and as shown in fig. 5 and 6, the display module further includes an array substrate 501 and a color film substrate 502 which are oppositely arranged, a first polarizer 503 which is located at a side of the color film substrate 502 away from the array substrate 501, a first metal wire 1031 which is located at a side of the color film substrate 502 close to the first polarizer 503, and a second metal wire 1041 which is located at a side of the first polarizer 503 close to the color film substrate.
It should be noted that, the display module provided in the embodiments of the present disclosure may be a liquid crystal display module (as shown in fig. 5) or an organic electroluminescent diode display module (as shown in fig. 6), and the antenna provided in any of the embodiments may be integrated in the liquid crystal display module or the organic electroluminescent diode display module.
As shown in fig. 5, when the display module is a liquid crystal display module, a liquid crystal layer (not shown) is further disposed in front of the array substrate 501 and the color film substrate 502, and light provided by a backlight source in the backlight module (not shown) can pass through the array substrate 501 and the liquid crystal layer, and polarized light passing through the liquid crystal layer can be transmitted by the color film substrate 502 and the first polarizer 503. The millimeter wave antenna may be integrated in the space between the color film substrate 502 and the first polarizer 503. Specifically, the first metal line 1031 is located at a side of the color film substrate 502 close to the first polarizer 503, and the second metal line 1041 is located at a side of the first polarizer 503 close to the color film substrate 502. The ground layer 103 formed by the first metal lines 1031 may be attached to the color film substrate 502, and the radiation layer 104 formed by the second metal lines 1041 may be attached to the first polarizer 503. Because the grid structures of the first metal wire 1031 and the second metal wire 1041, the whole antenna is in a transparent state, and shielding of light in the display module can be avoided, so that the display effect of the display module and the radiation performance of the antenna can be improved.
As shown in fig. 6, when the display module is an organic light emitting diode display module, external ambient light can be irradiated to the array substrate 501 and reflected by an anode of a light emitting device (not shown) in the array substrate 501, and the light passes through the first polarizer 503 twice, and the polarization directions of the polarized light of the two polarized light are different, so that the first polarizer 503 can avoid the transmission of the reflected light. The millimeter wave antenna may be integrated in the space between the color film substrate 502 and the first polarizer 503. Specifically, the first metal line 1031 is located at a side of the color film substrate 502 close to the first polarizer 503, and the second metal line 1041 is located at a side of the first polarizer 503 close to the color film substrate 502. The ground layer 103 formed by the first metal lines 1031 may be attached to the color film substrate 502, and the radiation layer 104 formed by the second metal lines 1041 may be attached to the first polarizer 503. Because the grid structures of the first metal wire 1031 and the second metal wire 1041, the whole antenna is in a transparent state, and shielding of light in the display module can be avoided, so that the display effect of the display module and the radiation performance of the antenna can be improved.
In some embodiments, as shown in fig. 5 and 6, the display module further includes a first adhesive layer 504 and a second adhesive layer 505, the first adhesive layer 504 is located between the first metal line 1031 and the color film substrate 503, and the second adhesive 505 is located between the first substrate 101 and the second substrate 102.
The first adhesive layer 504 and the second adhesive 505 may be made of a material with good light transmittance, for example, optical adhesive (OCA) or the like, the ground layer 103 formed by the first metal wire 1031 may be attached to the color film substrate 502 through the first adhesive 504, and similarly, the radiation layer 104 formed by the second metal wire 1041 and the second substrate 102 may be attached to the first substrate 101 through the second adhesive layer 505, so as to integrate the whole millimeter wave antenna between the color film substrate 502 and the first polarizer, and avoid shielding the light by the millimeter wave antenna.
In some embodiments, as shown in fig. 5, the display module further includes a second polarizer 506, and the second polarizer 506 is located on a side of the array substrate 501 facing away from the color film substrate.
The difference between the lcd module and the organic electroluminescent diode display module is that two polarizers, i.e. the first polarizer 503 and the second polarizer 506, are required in the lcd module, and the second polarizer can convert the light provided by the backlight source into polarized light, so that the light provided by the backlight source can be transmitted through the gaps between the deflected liquid crystal molecules in the liquid crystal layer.
In some embodiments, the display module further comprises a radio frequency module (not shown in the figure) in binding connection with the first binding pad 105 and the second binding pad 106 through a flexible transmission line 507.
The rf module may provide an rf signal to the radiation layer 104 of the antenna to radiate the signal outwards, thereby implementing the function of radiating the signal of the antenna. The radio frequency module can be in binding connection with the first binding pad 105 and the second binding pad 106 in the antenna through the flexible transmission line 507, so as to facilitate the electrical connection between the radio frequency module and the antenna. Meanwhile, the second binding pad 106 in the antenna can increase the binding area, so that the binding firmness can be improved, and the effective transmission of signals is ensured.
In some embodiments, fig. 7 is a schematic structural diagram of a transmission line in a display module according to an embodiment of the disclosure, and as shown in fig. 7, the transmission line 507 includes a liquid crystal polymer substrate 5071 and a metal signal line 5072 disposed on the liquid crystal polymer substrate 5071.
The transmission line in the embodiments of the present disclosure may be specifically an LCP transmission line, which includes a liquid crystal polymer substrate 5071, and a metal signal line 5072, such as a copper wire, disposed on the liquid crystal polymer substrate 5071. The LCP transmission line overall dimensions are 20mm x 8.5mm (4.13λc x 1.7λc, λc being the wavelength of the signal at the centre frequency of the antenna). The flexible LCP transmission line is a one-to-four-way coplanar waveguide type power division network. The LCP transmission line has excellent transmission performance on radio frequency signals, especially high frequency signals, and is favorable for the millimeter wave antenna to transmit signals between radio frequency modules, thereby improving the signal transmission efficiency.
The embodiment of the disclosure further provides a display device, which includes the display module provided in any of the embodiments, specifically, the display device may be, for example, a mobile phone, a notebook computer, a television, a display, a projection device, a game terminal device (for example, switch, ps, etc.), where the implementation principle and the technical effect are the same as those of the display module, and are not repeated herein.
It is to be understood that the above embodiments are merely exemplary embodiments employed to illustrate the principles of the present disclosure, however, the present disclosure is not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the disclosure, and are also considered to be within the scope of the disclosure.
Claims (15)
1. The millimeter wave antenna is arranged in an organic light emitting diode display module, the standing wave ratio of the millimeter wave antenna is smaller than 1.50 in a frequency band from 60GHz to 64GHz, the millimeter wave antenna is provided with a radiation area and a non-radiation area surrounding the radiation area, and is characterized by comprising a plurality of antenna vibrators, wherein the antenna vibrators comprise a first substrate, a second substrate, a grounding layer and a radiation layer, the first substrate and the second substrate are oppositely arranged, the grounding layer is positioned on one side of the first substrate, which is away from the second substrate, the radiation layer is positioned on one side of the second substrate, the grounding layer comprises a plurality of first metal wires which are arranged in a crossing manner, the radiation layer comprises a plurality of second metal wires which are arranged in a crossing manner, the first metal wires which are arranged in a crossing manner form a first hollow structure, the second metal wires which are arranged in a crossing manner form a second hollow structure, the shapes of the first hollow structure and the second hollow structure are diamond, square or rectangle, and the edges of the radiation layer are saw-tooth-shaped;
the orthographic projection of the second metal line on the first substrate at least partially overlaps with the orthographic projection of the first metal line on the first substrate;
The second metal wire is only arranged in the radiation area, and the first metal wire is arranged in the radiation area and the non-radiation area;
a distance is provided between the first substrate and the second substrate.
2. The millimeter-wave antenna of claim 1, wherein an orthographic projection of said second metal line on said first substrate is fully coincident with an orthographic projection of said second metal line on said first substrate.
3. The millimeter wave antenna according to claim 1, wherein the radiation layer further comprises a feeding portion electrically connected to the second metal wire, the antenna element further comprises a first bonding pad located on a side of the second substrate facing away from the first substrate;
the first bonding pad is electrically connected with the feeding portion.
4. The millimeter wave antenna according to claim 3, wherein said antenna element further comprises second bond pads located on both sides of said first bond pad;
The second binding pad is disconnected from the feeding portion.
5. The millimeter wave antenna of claim 1, wherein the first hollowed-out structure and the second hollowed-out structure are identical in shape.
6. The millimeter wave antenna according to claim 1, wherein the first metal lines have a thickness of 0.6 to 3 micrometers and a line width of 0.4 to 10 micrometers, and wherein a distance between adjacent first metal lines is 100 to 200 micrometers;
the thickness of the second metal wire is 0.6-3 microns, the line width is 0.4-10 microns, and the distance between every two adjacent second metal wires is 100-200 microns.
7. The millimeter wave antenna according to claim 1, wherein the materials of the first substrate and the second substrate each comprise a cyclic olefin polymer or polyethylene terephthalate.
8. The millimeter wave antenna of claim 1, wherein said first metal wire of said plurality of antenna elements is an integrally formed structure.
9. A display module comprising the millimeter wave antenna according to any one of claims 1 to 8.
10. The display module according to claim 9, wherein the display module comprises an array substrate, a color film substrate and a first polarizer, wherein the array substrate and the color film substrate are oppositely arranged, and the first polarizer is positioned on one side of the color film substrate away from the array substrate;
The first metal wire is positioned at one side of the color film substrate, which is close to the first polaroid;
the second metal wire is positioned at one side of the first polaroid, which is close to the color film substrate.
11. The display module of claim 10, further comprising a first adhesive layer and a second adhesive layer;
the first adhesive layer is positioned between the first metal wire and the color film substrate;
the second adhesive is located between the first substrate and the second substrate.
12. The display module of claim 10, further comprising a second polarizer;
The second polaroid is positioned at one side of the array substrate, which is away from the color film substrate.
13. The display module of claim 9, wherein the display module further comprises a radio frequency module;
the radio frequency module is in binding connection with the first binding pad and the second binding pad through flexible transmission lines.
14. The display module of claim 13, wherein the transmission line comprises a liquid crystal polymer substrate and a metal signal line on the liquid crystal polymer substrate.
15. A display device comprising a display module according to any one of claims 9 to 14.
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| CN111399286A (en) * | 2020-04-30 | 2020-07-10 | 厦门天马微电子有限公司 | Display device and electronic apparatus |
| CN112385084A (en) * | 2018-07-05 | 2021-02-19 | 东友精细化工有限公司 | Antenna structure and display device comprising same |
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| CN111834731B (en) * | 2019-04-19 | 2022-03-01 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
| CN111509380A (en) * | 2020-04-22 | 2020-08-07 | 京东方科技集团股份有限公司 | Antenna, preparation method, antenna array and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103247581A (en) * | 2012-02-14 | 2013-08-14 | 国际商业机器公司 | Chip package structure and device |
| CN112385084A (en) * | 2018-07-05 | 2021-02-19 | 东友精细化工有限公司 | Antenna structure and display device comprising same |
| CN111370870A (en) * | 2020-03-19 | 2020-07-03 | Oppo广东移动通信有限公司 | Antenna devices and electronic equipment |
| CN111399286A (en) * | 2020-04-30 | 2020-07-10 | 厦门天马微电子有限公司 | Display device and electronic apparatus |
| CN214068897U (en) * | 2020-12-25 | 2021-08-27 | 北京京东方传感技术有限公司 | Antennas and Electronics |
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