Antenna, display module and display device

Abstract

The present disclosure provides an antenna, a display module and a display device, and belongs to the technical field of display, which can solve the problem that the existing antenna affects the visual effect. The antenna of the present disclosure has a radiation area and a non-radiation area surrounding the radiation area; the antenna comprises a plurality of antenna elements; each antenna element comprises oppositely arranged first and second substrates, a ground layer on the side of the first substrate away from the second substrate, and a radiation layer on the side of the second substrate away from the first substrate; the ground layer comprises a plurality of first metal wires arranged in a cross manner; the radiation layer comprises a plurality of second metal wires arranged in a cross manner; the orthographic projection of the second metal wires on the first substrate at least partially overlaps the orthographic projection of the first metal wires on the first substrate; the second metal wires are arranged only in the radiation area, and the first metal wires are arranged in the radiation area and the non-radiation area.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of display, and particularly relates to an antenna, a display module and a display device. BACKGROUND

[0002] Wireless screen projection, also known as wireless screen sharing, screen projection, and screen sharing, is a technical method for displaying the screen of a mobile device A on another display device B in real time. At present, the mainstream wireless screen projection protocols include Apple's Airplay and Android's Miracast, and most television set-top boxes and smart televisions currently support these two data transmission protocols. However, they still rely on wireless transmission in a WiFi environment. However, even the mainstream WiFi 6 protocol has a transmission rate that is still lower than that of wired HDMI 1.0, and most devices still use WiFi 2.4 / 5 protocols, so traditional wireless screen projection is prone to problems such as latency, loss of image quality, and freezing and screen glitches.

[0003] Millimeter wave communication, as an important technology, has ultra-high speed, ultra-large bandwidth, ultra-low latency, and high anti-interference performance, which has been widely used in various fields. However, when millimeter wave antennas are applied to display technology, the display screen in the display device is prone to moire, poor antenna visual effect, and low antenna gain. SUMMARY

[0004] The present 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.

[0005] In a first aspect, an antenna is provided, having a radiation area and a non-radiation area surrounding the radiation area; the antenna comprises: a plurality of antenna elements; the antenna element comprises: oppositely arranged first and second substrates, a ground layer on the side of the first substrate away from the second substrate, and a radiation layer on the side of the second substrate away from the first substrate; the ground layer comprises: a plurality of first metal wires arranged in cross; the radiation layer comprises: a plurality of second metal wires arranged in cross;

[0006] The second metal wire is arranged in the radiation area only, and the first metal wire is arranged in the radiation area and the non-radiation area.

[0007] The second metal wire is arranged in the radiation area only, and the first metal wire is arranged in the radiation area and the non-radiation area.

[0008] Optionally, a projection of the second metal line on the first substrate is fully overlapped with a projection of the second metal line on the first substrate.

[0009] Optionally, the radiation layer further comprises a feeding portion electrically connected with the second metal line; the antenna element further comprises a first bonding pad located on a side of the second substrate facing away from the first substrate;

[0010] The first bonding pad is electrically connected with the feeding portion.

[0011] Optionally, the antenna element further comprises a second bonding pad located on two sides of the first bonding pad;

[0012] The second bonding pad is arranged to be disconnected with the feeding portion.

[0013] Optionally, the first metal line arranged in a cross manner forms a first hollow structure, and the second metal line arranged in a cross manner forms a second hollow structure; the first hollow structure and the second hollow structure are of the same shape.

[0014] Optionally, the first metal line has a thickness of 0.6 microns to 3 microns and a line width of 0.4 microns to 10 microns; a distance between adjacent first metal lines is 100 microns to 200 microns;

[0015] The second metal line has a thickness of 0.6 microns to 3 microns and a line width of 0.4 microns to 10 microns; a distance between adjacent second metal lines is 100 microns to 200 microns.

[0016] Optionally, the first substrate and the second substrate are both made of cyclic olefin polymer or polyethylene terephthalate.

[0017] Optionally, the first metal line in the plurality of antenna elements is of an integral structure.

[0018] In a second aspect, the embodiments of the present disclosure provide a display module, which comprises the antenna as provided above.

[0019] Optionally, the display module comprises an array substrate and a color film substrate arranged oppositely, and a first polarizer located on a side of the color film substrate facing away from the array substrate;

[0020] The first metal line is located on a side of the color film substrate close to the first polarizer;

[0021] The second metal line is located on a side of the first polarizer close to the color film substrate.

[0022] Optionally, the display module further comprises a first adhesive layer and a second adhesive layer;

[0023] The first adhesive layer is located between the first metal line and the color filter substrate;

[0024] The second adhesive is located between the first substrate and the second substrate.

[0025] Optionally, the display module further includes: a second polarizer;

[0026] The second polarizer is located on the side of the array substrate opposite to the color filter substrate.

[0027] Optionally, the display module further includes: a radio frequency module;

[0028] The radio frequency module is bonded to the first bonding pad and the second bonding pad via a flexible transmission line.

[0029] Optionally, the transmission line includes: a liquid crystal polymer substrate and a metal signal line located on the liquid crystal polymer substrate.

[0030] Thirdly, embodiments of this disclosure provide a display device, the display device including the display module as described above. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an antenna provided in an embodiment of the present disclosure;

[0032] Figure 2 for Figure 1 The diagram shows the structure of the antenna element in the antenna shown.

[0033] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the antenna element along the A-A' direction;

[0034] Figure 4 A standing wave characteristic diagram of an antenna provided in an embodiment of this disclosure;

[0035] Figure 5 This is a schematic diagram of the structure of a display module provided in an embodiment of the present disclosure;

[0036] Figure 6 This is a schematic diagram of another display module provided in an embodiment of the present disclosure;

[0037] Figure 7 This is a schematic diagram of the transmission line structure in the display module provided in an embodiment of the present disclosure. Detailed Implementation

[0038] In order for those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be further described in detail below in conjunction with the drawings and specific embodiments.

[0039] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which the present disclosure pertains. The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different components. Similarly, the terms "one", "a", or "the" and similar terms do not denote a quantity restriction, but mean that at least one exists. The terms "include", "comprise", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and similar terms do not mean a physical or mechanical connection, but can include an electrical connection, whether direct or indirect. The terms "up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0040] At present, with the continuous development of the fifth generation communication technology (5G), millimeter wave communication, as an important technology, has been widely used in various fields due to its ultra-high speed, ultra-high bandwidth, ultra-low latency, and high anti-interference characteristics. For example, in the wireless projection process, millimeter wave communication can completely realize ultra-low delay, lossless picture quality, and no stuttering and screen effects compared with WiFi. However, when the millimeter wave antenna is applied to display technology, the display picture in the display device is prone to moire, poor antenna visual effect, low antenna gain, and other problems. In order to at least solve one of the above technical problems, the present disclosure provides an antenna, a display module, and a display device, which will be described in further detail below in conjunction with the drawings and specific embodiments.

[0041] Figure 1 A structural schematic diagram of an antenna provided by an embodiment of the present disclosure is shown in FIG. 1. Figure 1 As shown in FIG. 1, the antenna has a radiation area and a non-radiation area surrounding the radiation area; the antenna comprises a plurality of antenna elements 10. Figure 2 As shown in FIG. 2, a structural schematic diagram of an antenna element in the antenna is shown in FIG. 2. Figure 1 As shown in FIG. 2, a structural schematic diagram of an antenna element in the antenna is shown in FIG. 2. Figure 3 As shown in FIG. 3, a cross-sectional schematic diagram of the antenna element along the A-A' direction is shown in FIG. 3. Figure 2 As shown in FIG. 3, a cross-sectional schematic diagram of the antenna element along the A-A' direction is shown in FIG. 3. Figure 2 As shown in FIG. 3, a cross-sectional schematic diagram of the antenna element along the A-A' direction is shown in FIG. 3. Figure 3As shown, the antenna element 10 comprises: a first substrate 101 and a second substrate 102 arranged oppositely, a ground layer 103 located on a side of the first substrate 101 away from the second substrate 102, and a radiation layer 104 located on a side of the second substrate 102 away from the first substrate 101; the ground layer 103 comprises: a plurality of first metal wires 1031 arranged in a cross manner; the radiation layer 104 comprises: a plurality of second metal wires 1041 arranged in a cross manner; a normal projection of the second metal wire 1041 on the first substrate 101 at least partially overlaps a normal projection of the first metal wire 1031 on the first substrate 101; the second metal wire 1041 is arranged only in a radiation area, and the first metal wire 1031 is arranged in the radiation area and a non-radiation area.

[0042] The first substrate 101 and the second substrate 102 can be made of transparent materials, specifically, the transparent materials can be rigid transparent materials or flexible transparent materials, which can be reasonably selected according to actual needs. The first substrate 101 can effectively support the ground layer 103 formed thereon, and the second substrate 102 can effectively support the radiation layer 104 formed thereon. Meanwhile, the first substrate 101 and the second substrate 102 are spaced apart by a certain distance, so that a certain spacing is formed between the corresponding ground layer 103 and the radiation layer 104, to avoid short circuit between the ground layer 103 and the radiation layer 104, and to form a magnetic field therebetween to realize signal radiation function.

[0043] The ground layer 103 can be made of a plurality of first metal wires 1031 arranged in a cross manner, and the material of the first metal wire 1031 can be one or more alloys of copper (Cu), aluminum (Al), silver (Ag), nickel (Ni), molybdenum (Mo), and titanium (Ti). Specifically, in the disclosed embodiment, the first metal wire 1031 is made of copper. Since the line width of the first metal wire 1031 is small, which can reach micron level, and the plurality of first metal wires 1031 are arranged in a cross manner, the ground layer 103 composed of the plurality of first metal wires 1031 arranged in a cross manner can transmit light, so that the ground layer 103 composed of the plurality of first metal wires 1031 arranged in a cross manner can present a transparent state.

[0044] The radiation layer 104 can be made of a plurality of second metal wires 1041 arranged in a cross manner, and the material of the second metal wires 1041 can be one or more of copper (Cu), aluminum (Al), silver (Ag), nickel (Ni), molybdenum (Mo), titanium (Ti), or an alloy thereof. Specifically, in the disclosed embodiment, the second metal wires 1041 are made of copper. Since the line width of the second metal wires 1041 is small, which can reach the micron level, and the plurality of second metal wires 1041 are arranged in a cross manner, the radiation layer 104 formed by the plurality of second metal wires 1041 arranged in a cross manner can transmit light, so that the radiation layer 104 formed by the plurality of second metal wires 1041 arranged in a cross manner can present a transparent state.

[0045] In actual applications, the size of the first metal wires 1031 and the second metal wires 1041 can be equal, for example, the line width of the metal wires, the distance between adjacent metal wires, etc., and in the preparation process, the orthographic projection of the first hollow structure formed by the plurality of first metal wires 1031 on the first substrate 101 and the orthographic projection of the second hollow structure formed by the second metal wires 1041 on the first substrate 101 can at least partially overlap, so that the first metal wires 1031 and the second metal wires 1041 can avoid mutual crossing and blocking of light, and thus the overall antenna can have good light transmission performance, so that the antenna can present a transparent state.

[0046] In related technologies, generally only one radiation layer 104 is arranged in the antenna, and the metal back plate in the display device where the antenna is located is used as the ground layer 103, and the ground layer 103 is not separately arranged. However, due to the existence of the antenna structure in the display area of the display device, the display effect of the display device is often affected, for example, moire patterns and other defects appear on the display screen. In order to effectively reduce the moire patterns and other defects, blackening treatment is often performed on the non-radiation area of the antenna, for example, the edges of the radiation layer 104 are subjected to wire breaking treatment. Although the radiation layer 104 after blackening treatment can reduce the generation of moire patterns, the blackening treatment still affects the visual effect, and the blackening treatment changes the shape of the antenna radiation layer 104, and the structure of the edge of the radiation layer 104 needs to be greatly changed, which brings unnecessary difficulty to the antenna design.

[0047] In the embodiments of the present disclosure, the second metal wires 1041 in the radiation layer 104 are only arranged in the radiation area, the area of the ground layer 103 is greater than that of the radiation layer 104, the first metal wires 1031 in the ground layer 103 extend from the radiation area to the non-radiation area, and the ground layer 103 can be exposed from the edge of the radiation layer 104, so as to visually show that the edge of the radiation layer 104 has been blackened, thereby effectively reducing the moire effect. In terms of structure, since the radiation layer 104 is not actually blackened, the structure of the second metal wires 1041 in the radiation layer 104 is not changed, and the radiation performance of the antenna is not affected, and the radiation layer 104 does not need to be specially designed during the antenna process, thereby reducing the difficulty of antenna design, and further improving the design efficiency of the antenna.

[0048] In some embodiments, as shown in Figure 2 The orthogonal projection of the second metal wires 1041 on the first substrate 101 completely overlaps the orthogonal projection of the first metal wires 1031 on the first substrate 101.

[0049] In actual application, the size of the first metal wires 1031 and the second metal wires 1041 can be completely equal, for example, the line width of the metal wires, the distance between adjacent metal wires, and the like, so that the second metal wires 1041 and the first metal wires 1031 can completely overlap, further avoiding the shielding of the first metal wires 1031 and the second metal wires 1041 to the light, so that the ground layer 103 and the radiation layer 104 in the antenna are in a transparent state, and the antenna does not affect the display picture of the display device.

[0050] In some embodiments, as shown in Figure 2 The antenna element 10 further includes a first binding pad 105 located on the side of the second substrate 102 away from the first substrate 101, and the first binding pad 105 is electrically connected with the feeding part 1042.

[0051] The feeding part 1042 is connected with the second metal wires 1041, and the feeding part 1042 can input a signal to the second metal wires 1041 in the radiation layer 104, so as to form an electromagnetic field between the radiation layer 104 and the ground layer 103, and radiate the signal outward. Of course, the radiation layer 104 can also receive a signal from the outside, and the feeding part 1042 can transmit the received signal to a display device or the like. The first plate top pad 105 can be electrically connected with the feeding part 1042, and the first plate top pad 105 can be used as a pin of the radiation layer 104 to lead out the signal. In actual application, other modules in the display device, for example, a radio frequency module, can be connected with the first binding pad 105, so as to connect the antenna structure with other modules.

[0052] In some embodiments, asFigure 2 As shown, the antenna element 10 also includes: a second bonding pad 106 located on both sides of the first bonding pad 105; the second bonding pad 106 is disconnected from the feed section 1042.

[0053] Second bonding pads 106 can be provided on both sides of the first bonding pad 105. The second bonding pads 106 are suspended and are not electrically connected to the feed portion 1042 in the radiating layer 104. Because the area of ​​the first bonding pad 105 is small, it is prone to weak connections when bonding with external RF modules, affecting signal transmission. The second bonding pads 106 are located on both sides of the first bonding pad 105, arranged side-by-side with the first bonding pad 103, which increases the bonding area, thereby improving bonding strength and ensuring effective signal transmission. Furthermore, since the second bonding pads 106 are not electrically connected to the feed portion 1042 in the radiating layer 104, they do not affect the structure of the radiating layer 104, thus reducing manufacturing complexity.

[0054] It should be noted that the first bonding pad 105 and the second bonding pad 106 can be manufactured using the same process and the same materials. For example, the materials for the first bonding pad 105 and the second bonding pad 106 can be one or more alloys of copper (Cu), aluminum (Al), silver (Ag), nickel (Ni), molybdenum (Mo), and titanium (Ti). During the fabrication process, a metal layer can be formed on the second substrate 102, and the metal layer can be patterned using a single patterning process to form the first bonding pad 105 and the second bonding pad 106. This reduces the complexity of the process and saves on fabrication costs.

[0055] In some embodiments, the first metal wires 1031 intersecting form a first hollow structure, and the second metal wires 1041 intersecting form a second hollow structure; the first hollow structure and the second hollow structure have the same shape.

[0056] During the fabrication process, a metal layer can be formed on the first substrate 101, and a patterning process can be used to pattern the metal layer to form multiple first metal lines 1031 and a first hollow structure in the ground layer 103. Similarly, the same process and the same material can be used to form the second metal lines 1041 and the second hollow structure of the radiation layer 104 on the second substrate 102. The shapes of the first hollow structure and the second hollow structure can be exactly the same, which can further avoid the first metal lines 1031 and the second metal lines 1041 intersecting and blocking light, thereby ensuring that the antenna as a whole has good light transmission performance, so that the antenna is transparent and avoids the antenna affecting the display screen. Specifically, the shapes of the first hollow structure and the second hollow structure can both be rhomboid, square, rectangular, etc., and of course, other shapes can also be used, which will not be listed here.

[0057] In some embodiments, the thickness of the first metal line 1031 is 0.6 micrometers to 3 micrometers, and the line width is 0.4 micrometers to 10 micrometers; the distance between adjacent first metal lines 1031 is 100 micrometers to 200 micrometers; the thickness of the second metal line 1042 is 0.6 micrometers to 3 micrometers, and the line width is 0.4 micrometers to 10 micrometers; the distance between adjacent second metal lines 1042 is 100 micrometers to 200 micrometers.

[0058] The linewidth, distance between adjacent first metal lines 1031, and thickness of the first metal line 1031 are all at the micrometer level. Furthermore, the distance between adjacent first metal lines 1031 is much greater than the linewidth of the first metal line 1031. This ensures that the gaps between the multiple intersecting first metal lines 1031 are large enough to prevent light blockage by the first metal lines 1031, thus guaranteeing good light transmission performance for the grounding layer 103 formed by the first metal lines 1031. Similarly, the size of the second metal line 1041 is the same as that of the first metal line 1031. This prevents the first metal lines 1031 and second metal lines 1041 from intersecting and blocking light, thereby ensuring good overall light transmission performance for the antenna, making it transparent.

[0059] In some embodiments, the materials of the first substrate 101 and the second substrate 102 both include: cyclic olefin polymers or polyethylene terephthalate.

[0060] The first substrate 101 and the second substrate 102 can be made of the same material, which can be either cyclic olefin polymer (COP) or polyethylene terephthalate (PET). These materials have good light transmittance properties, which can prevent the first substrate 101 and the second substrate 102 from blocking the light, ensuring the overall light transmittance of the antenna and making the antenna transparent.

[0061] In some embodiments, the first metal wire 1031 in the plurality of antenna elements 10 is an integrally formed structure.

[0062] The first metal line 1031 in the ground layer 103 of each antenna element 10 provides the same signal, namely the reference ground signal, and the reference ground signal is a stable signal. The first metal line 1031 in each antenna element 10 can be integrally formed to facilitate the uniform input of the reference ground signal to the first metal line 1031 in each antenna element 10, so as to ensure effective signal transmission.

[0063] Specifically, the antenna provided in this embodiment can be a millimeter-wave antenna. Millimeter-wave antennas can output signals with wavelengths at the millimeter level. Compared to microwave antennas, millimeter-wave antennas have a larger operating bandwidth, higher gain, and higher radiation efficiency. Furthermore, millimeter-wave antennas are equipped with multiple antenna elements 10, which can further improve the antenna's radiation performance. Figure 4 A standing wave characteristic diagram of an antenna provided in an embodiment of this disclosure, such as... Figure 4 As shown, within the 60GHz to 64GHz frequency band, the antenna's VSWR is less than 1.50, indicating that the antenna's bandwidth can reach 4GHz with high matching degree, achieving good radiation performance. Compared to current WiFi technology, the antenna provided in this embodiment has higher transmission efficiency, which is more conducive to signal transmission in wireless screen projection scenarios, avoiding problems such as latency, degraded image quality, and stuttering / screen flickering. It should be noted that in this embodiment, the millimeter-wave antenna size is 8.4mm × 2.6mm (1.74λc × 0.54λc, where λc is the wavelength of the signal at the antenna's center frequency).

[0064] This disclosure also provides a display module. Figure 5 This is a schematic diagram of the structure of a display module provided in an embodiment of the present disclosure. Figure 6 This is a schematic diagram of another display module provided in an embodiment of the present disclosure, as shown below. Figure 5 and Figure 6 As shown, the display module includes the antenna provided in any of the above embodiments. The display module also includes: an array substrate 501 and a color filter substrate 502 disposed opposite to each other, and a first polarizer 503 located on the side of the color filter substrate 502 away from the array substrate 501; a first metal line 1031 located on the side of the color filter substrate 502 close to the first polarizer 503; and a second metal line 1041 located on the side of the first polarizer 503 close to the color filter substrate.

[0065] It should be noted that the display module provided in this embodiment can be a liquid crystal display module (such as...) Figure 5 As shown), it can also be an organic light-emitting diode display module (such as...). Figure 6 As shown, the antenna provided in any of the above embodiments can be integrated into either a liquid crystal display module or an organic light-emitting diode display module.

[0066] like Figure 5As shown, when the display module is a liquid crystal display module, a liquid crystal layer (not shown) is further disposed between the array substrate 501 and the color filter substrate 502. The light provided by the backlight source in the backlight module (not shown) can pass through the array substrate 501 and the liquid crystal layer. The polarized light passing through the liquid crystal layer can be transmitted through the color filter substrate 502 and the first polarizer 503. A millimeter-wave antenna can be integrated in the space between the color filter substrate 502 and the first polarizer 503. Specifically, the first metal line 1031 is located on the side of the color filter substrate 502 near the first polarizer 503; the second metal line 1041 is located on the side of the first polarizer 503 near the color filter substrate 502. The ground layer 103 formed by the first metal line 1031 can be attached to the color filter substrate 502, and the radiation layer 104 formed by the second metal line 1041 can be attached to the first polarizer 503. Due to the mesh structure of the first metal line 1031 and the second metal line 1041, the entire antenna is transparent, which can avoid blocking the light in the display module, thereby improving the display effect of the display module and the radiation performance of the antenna.

[0067] like Figure 6 As shown, when the display module is an organic light-emitting diode (OLED) display module, ambient light can illuminate the array substrate 501 and be reflected by the anode of the light-emitting device (not shown) in the array substrate 501. Since the light needs to pass through the first polarizer 503 twice, and the polarization directions of the two polarized lights are different, the first polarizer 503 can prevent the reflected light from being transmitted. The millimeter-wave antenna can be integrated into the space between the color filter substrate 502 and the first polarizer 503. Specifically, the first metal line 1031 is located on the side of the color filter substrate 502 near the first polarizer 503; the second metal line 1041 is located on the side of the first polarizer 503 near the color filter substrate 502. The ground layer 103 formed by the first metal line 1031 can be attached to the color filter substrate 502, and the radiating layer 104 formed by the second metal line 1041 can be attached to the first polarizer 503. Due to the mesh structure of the first metal line 1031 and the second metal line 1041, the entire antenna is transparent, which can avoid blocking the light in the display module, thereby improving the display effect of the display module and the radiation performance of the antenna.

[0068] In some embodiments, such as Figure 5 and Figure 6 As shown, the display module also 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 filter substrate 503; the second adhesive layer 505 is located between the first substrate 101 and the second substrate 102.

[0069] The first adhesive layer 504 and the second adhesive layer 505 can be made of materials with good light transmittance, such as optical adhesive (OCA). The ground layer 103 formed by the first metal line 1031 can be attached to the color filter substrate 502 through the first adhesive layer 504. Similarly, the radiation layer 104 formed by the second metal line 1041 and the second substrate 102 can be attached to the first substrate 101 through the second adhesive layer 505, so as to integrate the entire millimeter-wave antenna between the color filter substrate 502 and the first polarizer, while avoiding the millimeter-wave antenna from blocking light.

[0070] In some embodiments, such as Figure 5 As shown, the display module also includes a second polarizer 506; the second polarizer 506 is located on the side of the array substrate 501 away from the color filter substrate.

[0071] The difference between a liquid crystal display module and an organic light-emitting diode display module is that a liquid crystal display module requires two polarizers, namely a first polarizer 503 and a second polarizer 506. The second polarizer can convert the light provided by the backlight into polarized light so that the light provided by the backlight can pass through the gaps between the deflected liquid crystal molecules in the liquid crystal layer.

[0072] In some embodiments, the display module further includes: a radio frequency module (not shown in the figure); the radio frequency module is bonded to the first bonding pad 105 and the second bonding pad 106 via a flexible transmission line 507.

[0073] The radio frequency (RF) module can provide RF signals to the radiating layer 104 of the antenna to radiate signals outward, thus realizing the antenna's signal radiation function. The RF module can be bonded to the first bonding pad 105 and the second bonding pad 106 in the antenna via a flexible transmission line 507, facilitating electrical connection between the RF module and the antenna. Simultaneously, the second bonding pad 106 in the antenna can increase the bonding area, thereby improving bonding strength and ensuring effective signal transmission.

[0074] In some embodiments, Figure 7 This is a schematic diagram of the transmission line structure in the display module provided in the embodiments of this disclosure, as shown below. Figure 7 As shown, the transmission line 507 includes: a liquid crystal polymer substrate 5071 and a metal signal line 5072 located on the liquid crystal polymer substrate 5071.

[0075] The transmission line in this embodiment can specifically be an LCP transmission line, which includes a liquid crystal polymer substrate 5071 and a metal signal line 5072, such as a copper trace, located on the liquid crystal polymer substrate 5071. The overall size of the LCP transmission line is 20mm × 8.5mm (4.13λc × 1.76λc, where λc is the wavelength of the signal at the center frequency of the antenna). The flexible LCP transmission line of this invention is a one-to-four coplanar waveguide power divider network. The LCP transmission line has excellent transmission performance for radio frequency signals, especially high-frequency signals, which is beneficial for signal transmission between radio frequency modules in millimeter-wave antennas, thereby improving signal transmission efficiency.

[0076] This disclosure also provides a display device, which includes a display module as provided in any of the above embodiments. Specifically, the display device can be a mobile phone, a laptop, a television, a monitor, a projection device, or a game terminal device (e.g., Switch, PS, etc.). Its implementation principle and technical effect are the same as those of the display module described above, and will not be repeated here.

[0077] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A millimeter-wave antenna disposed in an organic light-emitting diode display module, wherein the millimeter-wave antenna has a standing wave ratio of less than 1.50 in the frequency band of 60 GHz to 64 GHz; The millimeter-wave antenna has a radiating region and a non-radiating region surrounding the radiating region; characterized in that... The millimeter-wave antenna includes: multiple 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: multiple first metal lines arranged in a cross configuration; the radiating layer includes: multiple second metal lines arranged in a cross configuration; the first metal lines forming a cross configuration form a first hollow structure, and the second metal lines forming a cross configuration form a second hollow structure; both the first hollow structure and the second hollow structure are rhomboid, square, or rectangular in shape; the edges of the radiating layer are serrated; 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 disposed only in the radiated area, and the first metal wire is disposed in both the radiated area and the non-radiated area; There is a certain distance between the first substrate and the second substrate.

2. The millimeter-wave antenna according to claim 1, characterized in that, The orthographic projection of the second metal line on the first substrate completely coincides with the orthographic projection of the second metal line on the first substrate.

3. The millimeter-wave antenna according to claim 1, characterized in that, The radiating layer further includes: a feed section electrically connected to the second metal line; the antenna element further includes: a first bonding pad located on the side of the second substrate opposite to the first substrate; The first bonding pad is electrically connected to the power supply section.

4. The millimeter-wave antenna according to claim 3, characterized in that, The antenna element further includes: a second bonding pad located on both sides of the first bonding pad; The second bonding pad is disconnected from the power supply section.

5. The millimeter-wave antenna according to claim 1, characterized in that, The first hollow structure and the second hollow structure have the same shape.

6. The millimeter-wave antenna according to claim 1, characterized in that, The thickness of the first metal wire is 0.6 micrometers to 3 micrometers, and the line width is 0.4 micrometers to 10 micrometers; the distance between adjacent first metal wires is 100 micrometers to 200 micrometers. The thickness of the second metal wire is 0.6 micrometers to 3 micrometers, and the line width is 0.4 micrometers to 10 micrometers; the distance between adjacent second metal wires is 100 micrometers to 200 micrometers.

7. The millimeter-wave antenna according to claim 1, characterized in that, The materials of both the first substrate and the second substrate include: cyclic olefin polymers or polyethylene terephthalate.

8. The millimeter-wave antenna according to claim 1, characterized in that, The first metal wire in the plurality of antenna elements is a one-piece molded structure.

9. A display module, characterized in that, The display module includes a millimeter-wave antenna as described in any one of claims 1 to 8.

10. The display module according to claim 9, characterized in that, The display module includes: an array substrate and a color filter substrate disposed opposite to each other, and a first polarizer located on the side of the color filter substrate facing away from the array substrate; The first metal line is located on the side of the color filter substrate closest to the first polarizer; The second metal line is located on the side of the first polarizer closer to the color filter substrate.

11. The display module according to claim 10, characterized in that, The display module further includes: a first adhesive layer and a second adhesive layer; The first adhesive layer is located between the first metal line and the color filter substrate; The second adhesive is located between the first substrate and the second substrate.

12. The display module according to claim 10, characterized in that, The display module further includes: a second polarizer; The second polarizer is located on the side of the array substrate opposite to the color filter substrate.

13. The display module according to claim 9, characterized in that, The display module further includes: a radio frequency module; The radio frequency module is bonded to the first bonding pad and the second bonding pad via a flexible transmission line.

14. The display module according to claim 13, characterized in that, The transmission line includes: a liquid crystal polymer substrate and a metal signal line located on the liquid crystal polymer substrate.

15. A display device, characterized in that, The display device includes a display module as described in any one of claims 9 to 14.

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