Display panel and display device

Abstract

The application discloses a display panel and a display device, wherein the display panel comprises a light-emitting layer, a plurality of first antennas and a second antenna. The plurality of first antennas are located on the light-emitting surface side of the light-emitting layer, and the plurality of first antennas are arranged at intervals. The second antenna is located on the light-emitting surface side of the light-emitting layer, and the second antenna comprises an isolation part extending through the interval region between two adjacent first antennas. In the above manner, the second antenna is used to separate the first antennas, and the isolation degree between the first antennas is increased.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a display panel and display device. Background Technology

[0002] 5G (fifth-generation mobile communication) spectrum includes both millimeter-wave (mm-Wave) and non-mm-wave (non-mm-Wave) bands. Millimeter-wave bands have a wider bandwidth than non-mm-wave bands, resulting in higher channel capacity and enabling faster data transmission to meet users' demands for higher information rates. However, due to high propagation loss and high sensitivity to obstruction, millimeter-wave antennas are often designed as antenna arrays (composed of two or more antenna elements). 5G phones contain more antennas than 4G and earlier technologies, and the screen-to-body ratio of display panels is also increasing. Therefore, the placement of antennas on the display panel has become a major factor limiting the communication performance of display devices. Summary of the Invention

[0003] The main technical problem solved by this application is to provide a display panel and display device that uses a second antenna to separate a first antenna, thereby increasing the isolation between the first antennas.

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a display panel, including: a light-emitting layer; a plurality of first antennas located on one side of the light-emitting surface of the light-emitting layer, and the plurality of first antennas being spaced apart from each other; a second antenna located on one side of the light-emitting surface of the light-emitting layer, wherein the second antenna includes an isolation portion extending through the interval region between two adjacent first antennas.

[0005] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a display device, including the aforementioned display panel.

[0006] Unlike existing technologies, the advantages of this application are as follows: The display panel includes a light-emitting layer, multiple first antennas, and a second antenna. The multiple first antennas are located on the light-emitting side of the light-emitting layer and are spaced apart from each other. The second antenna is located on the light-emitting side of the light-emitting layer and includes an isolation portion extending through the gap between two adjacent first antennas. Through this method, this application arranges multiple first antennas on the display area formed by the light-emitting layer, thereby reducing the impact of the first antenna on the screen-to-body ratio, which is beneficial for achieving a full-screen display. Furthermore, this application uses the second antenna to separate the first antennas, increasing the isolation between the first antennas. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0008] Figure 1 This is a schematic diagram of the structure of one embodiment of the display panel of this application;

[0009] Figure 2 yes Figure 1 A schematic diagram of another embodiment of the orthogonal projection of the first and second antennas onto the light-emitting layer;

[0010] Figure 3 for Figure 2 A schematic diagram of a method for centrally setting up the second antenna in the middle;

[0011] Figure 4 for Figure 2 A schematic diagram of one embodiment of the second antenna having multiple coils;

[0012] Figure 5 yes Figure 2 The second antenna in the diagram is a structural diagram of a wireless charging antenna and a short-range wireless communication antenna. Detailed Implementation

[0013] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0014] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a display panel according to an embodiment of the present application. The display panel in this application may include: a light-emitting layer 1, a plurality of first antennas 2 and a second antenna 3.

[0015] The light-emitting layer 1 can be an OLED light-emitting layer, an LED light-emitting layer, etc. The light-emitting layer 1 includes a light-emitting surface 10, and users can observe the content displayed by the light-emitting layer 1 from one side of the light-emitting surface 10.

[0016] Multiple first antennas 2 are located on one side of the light-emitting surface 10 of the light-emitting layer 1, and the multiple first antennas 2 can be arranged at intervals. The first antennas 2 can be millimeter-wave antennas, non-millimeter-wave antennas, etc. When the first antenna 2 is a millimeter-wave antenna, the multiple first antennas 2 can be arranged to form a millimeter-wave antenna array. Optionally, its shape can be square, rectangular, rhomboid, etc., for transmitting and receiving millimeter-wave band wireless signals. In order to achieve better communication performance, especially for 5G millimeter-wave antennas, the antenna elements in the antenna array are required to have a high degree of isolation (generally greater than 10dB).

[0017] The second antenna 3 can be located on one side of the light-emitting surface 10 of the light-emitting layer 1. In some embodiments, the second antenna 3 can be a non-millimeter-wave antenna, such as a wireless charging antenna, a near-field communication (NFC) antenna, a wireless network antenna, a GPS positioning antenna, or a Bluetooth antenna. The second antenna 3 may include an isolation portion 31 extending through the gap between two adjacent first antennas 2. The isolation portion 31 can separate the first antennas 2, change the propagation path of the signal propagating between adjacent first antennas 2 on the layer where the first antenna 2 is located and the adjacent layers, reduce the mutual coupling between adjacent first antennas 2, and increase the isolation between the first antennas 2. In order to prevent the second antenna 3 from forming a new mutual coupling with the first antenna 2 and affecting the isolation between adjacent first antennas 2, the operating frequency bands of the second antenna and the first antenna 2 can be set to be different. Figure 1 The dashed box in the figure is not sufficient to limit the structure of the display panel in the embodiments of this application.

[0018] In some applications, the display panel may also include a metal mesh layer 4 located on one side of the light-emitting surface 10 of the light-emitting layer 1. The metal mesh layer 4 can be used to balance the light transmittance of the first antenna 2 and the surrounding area to improve the visual effect.

[0019] In some embodiments, the first antenna 2 or the second antenna 3 can be disposed on the same layer as the metal mesh layer 4, reducing the thickness of the screen. In some embodiments, the first antenna 2 or the second antenna 3 can be a partial pattern of the metal mesh layer 4, that is, a portion of the metal mesh layer 4, in addition to its visual improvement function, is reused as the first antenna 2 or the second antenna 3, increasing the utilization rate of the metal mesh layer 4; the remaining portion of the metal mesh layer 4 only serves a visual improvement function. In this case, the width of the lines of the first antenna 2 / second antenna 3 can be larger than the width of the remaining pattern lines of the metal mesh layer 4 to provide better isolation.

[0020] To prevent the metal mesh on the metal mesh layer 4 from affecting the circuit of the first antenna 2 or the second antenna 3, in one embodiment, vias or trenches can be formed between the metal pattern of the metal mesh layer 4 and the first antenna 2 / second antenna 3 to block the connection between the metal pattern of the metal mesh layer 4 and the second antenna 3. In another embodiment, an insulation break can be directly formed between the metal pattern and the first antenna 2 / second antenna 3.

[0021] In some embodiments, the first antenna 2 and the second antenna 3 can be simultaneously located on the metal mesh layer 4. In this case, the metal mesh layer 4 can be a touch layer, further reducing the thickness of the display panel and improving the integration of the display panel. Furthermore, when the metal mesh layer 4 is disposed on the same layer as the first antenna 2 and / or the second antenna 3, the first antenna 2 and / or the second antenna 3 can be made of the same material as the metal mesh layer 4. For example, they can be at least one of copper, aluminum, silver, copper alloy, aluminum alloy, silver alloy, indium tin oxide, zinc oxide, indium oxide, and their dopants. This can simplify the manufacturing process and avoid the adverse effects of different materials on signal transmission speed, strength, and quality. In this case, it is sufficient that the first antenna 2 and the metal mesh layer 4 are mutually insulated.

[0022] Furthermore, in some embodiments, it may be as follows Figure 1 As shown, the metal mesh layer 4 and the first antenna 2 are stacked on one side of the light-emitting surface 10 of the light-emitting layer 1. At this time, the metal mesh layer 4 can be located between the first antenna 2 and the light-emitting layer 1, or the first antenna 2 can be located between the metal mesh layer 4 and the light-emitting layer 1.

[0023] In an application scenario, such as Figure 2 As shown, Figure 2 for Figure 1 The diagram shows another embodiment of the structure of the first and second antennas projected onto the light-emitting layer. The light-emitting layer 1 can be rectangular and has sequentially adjacent sides L1-L4. Multiple first antennas 2 can be arranged sequentially at intervals along the edge L4 of the display panel, resulting in a cleaner structure and facilitating the placement of chips corresponding to multiple antennas close to them. This reduces path loss from the feeder to the antennas, achieving superior radiation performance. Furthermore, the first antennas 2 can be positioned closer to the edge of the display panel, reducing their degrading effect on the optical and tactile effects of the display panel. The first antennas 2 and multiple isolation sections 31 can be arranged alternately along one edge L4 of the display panel, further reducing the impact of the antennas on the visual optical and touch effects of the display panel. The number of isolation sections 31 is determined by the structure of the second antenna 3 and the number of first antennas 2.

[0024] In one application scenario, please refer to Figure 2The second antenna 3 may include a first end 311, a main body 32, and a second end 312 connected to each other. The main body 32 may include one or more coils, which may be loop coils. The number of coils is determined by the characteristics of the second antenna 3 and the performance requirements of the display panel. The first end 311 and / or the second end 312 form the aforementioned isolation portion 31. The second antenna 3 transmits and receives signals on the main body 32 through the first end 311 and the second end 312. The first end 311 and / or the second end 312 can space the first antenna 2 apart. Optionally, the first end 311 and the second end 312 may pass through the gap between two adjacent first antennas simultaneously, or they may be like... Figure 2 The antennas shown pass through different gaps between non-adjacent first antennas, or one of the first end 311 and the second end 312 can be disposed in the gap between the first antennas 2. The first end 311 and the second end 312 can reflect, absorb, and cancel the electromagnetic waves emitted by the first antennas 2, thereby changing the propagation path of the signals propagating between adjacent first antennas 2 on the layer where the first antenna 2 is located and the adjacent layers, reducing the mutual coupling between adjacent first antennas 2, and increasing the isolation between the first antennas 2.

[0025] Optionally, the shapes of the first end 311 and the second end 312 can also be configured in various ways, such as... Figure 2 The zigzag shape shown may be a straight line, an arc, or a combination of at least two of the straight, zigzag, and arc shapes.

[0026] In some embodiments, such as Figure 2As shown, the second antenna 3 can be an antenna coil, which extends along the edge of the display panel. For example, the main body 32 of the second antenna 3 can be antenna lines a, b, c, d, and e arranged near the edges L1-L3, and the distance between the main body 32 and the adjacent edge is less than a threshold. Preferably, the threshold is less than 1 / 2 of the width of the light-emitting layer (e.g., 1 / 3, 1 / 4, 1 / 5, 1 / 6, 1 / 7, 1 / 8, 1 / 9, 1 / 10, 1 / 12, 1 / 15, 1 / 16, 1 / 18, 1 / 20, 1 / 25 of the width of the light-emitting layer), that is, the main body 32 is arranged close to the edge of the display panel. This can increase the area of ​​the second antenna 3, increase the secondary radiation of the first antenna 2 on its own layer and adjacent layers, and increase the influence range of the second antenna 3 on the surface waves of the adjacent first antenna 2. This is beneficial to further increase the horizontal isolation between the adjacent first antennas 2, and can also avoid the influence of other devices located in the middle of the display panel on the normal operation of the antenna coil. In addition, the main body 32 of the second antenna 3 is distributed in different positions on the display panel. When the user uses different gestures to operate the display panel, the main body 32 can always be in a position that is not blocked by the user, which improves the stability of the second antenna 3 in transmitting and receiving wireless signals and better protects the user experience.

[0027] Of course, in other embodiments, such as Figure 3 As shown, Figure 3 yes Figure 2 A schematic diagram of a structural embodiment of a centralized second antenna 3 is provided. The second antenna 3 can be centrally located, and the distance between the main body 32 and its adjacent edges can also be greater than a certain threshold. The structure of the second antenna 3 is relative to... Figure 2 It is more compact.

[0028] In one embodiment, such as Figure 4 As shown, Figure 4 for Figure 2 The schematic diagram shows a structure of one embodiment of the second antenna 3 with multiple coils. The main body 32 may include multiple coils, which can be connected in series in a spiral arrangement, or the multiple coils can be connected in parallel between the first end 311 and the second end 312. Multiple coils can increase the magnetic field strength of the second antenna 3, thereby ensuring sufficient signal strength and further increasing the influence range of the second antenna 3 on the surface waves of the adjacent first antenna 2, thus further increasing the horizontal isolation between the adjacent first antennas 2.

[0029] In some embodiments, the second antenna 3 may include multiple non-millimeter-wave antennas, and the combined effect of multiple non-millimeter-wave antennas can further increase the isolation between the first antennas 2. For example, in one embodiment, the second antenna 3 may be configured as a wireless charging antenna W and a short-range wireless communication antenna N, such as... Figure 5 As shown, Figure 5 for Figure 2 The second antenna is a schematic diagram of the structure of a wireless charging antenna and a short-range wireless communication antenna. The wireless charging antenna W may include a first end W311, a main body W32, and a second end W312. The short-range wireless communication antenna N may include a first end N311, a main body N32, and a second end N312. Optionally, the first end W311 and the second end W312 of the wireless charging antenna W and the first end N311 and the second end N312 of the short-range wireless communication antenna can be respectively disposed in different intervals between the first antennas 2, or partially disposed in the same interval, or partially disposed in an interval and partially not disposed in an interval, further improving the isolation between the first antennas 2. The wireless charging antenna W and the short-range wireless communication antenna N are commonly used non-millimeter-wave antennas. The short-range wireless communication antenna N uses high-frequency communication (typically tens of MHz) and has low power, while the wireless charging antenna W has a low frequency (typically hundreds of kHz) and high power. Even if they are placed close together, they are not prone to mutual interference. In one embodiment, to avoid mutual interference between different types of second antennas 3, different second antennas 3 can also be disposed with dissimilar insulation layers.

[0030] Of course, in some embodiments, the wireless charging antenna W can also be reused as a short-range wireless communication antenna N, further improving the integration of the display panel.

[0031] In some other embodiments, the second antenna 3 may include other types of antennas besides the aforementioned wireless charging antenna W and short-range wireless communication antenna N. For example, wireless network antennas, short-range wireless communication antennas, GPS positioning antennas, Bluetooth antennas, etc., may be connected to corresponding chips or reused to improve integration.

[0032] In addition, this application provides a display device that may include the aforementioned display panel. This display device can fully utilize the advantages of the aforementioned display panel, achieving a higher utilization rate of the metal mesh layer, improving the integration of the display device, reducing the thickness of the display device, and further ensuring the isolation between the first antennas 2. This display device can be any product or component with display and signal transmission / reception functions, such as a mobile phone, television, desktop computer, laptop computer, tablet computer, smartwatch, or in-vehicle display.

[0033] like Figure 5As shown, the first antenna 2 can be connected to a first chip 51. When the first antenna 2 is a millimeter-wave antenna, the first chip 51 can be a 5G radio frequency chip. The second antenna can be connected to a second chip 52. When the second antenna 3 is a wireless charging antenna W, the second chip 52 can include a wireless charging chip. When the second antenna is a short-range wireless communication antenna N, the second chip 52 can include a short-range wireless communication antenna chip N. When the second antenna includes both a wireless charging antenna W and a short-range wireless communication antenna N, the second chip 52 can include both a wireless charging chip and a short-range wireless communication antenna chip, and is connected to the wireless charging antenna W and the short-range wireless communication antenna N respectively. Optionally, the first chip 51 and the second chip 52 can be connected to each other on the same circuit board via a connector, or the first chip 51 can be left unconnected to the second chip 52, thereby allowing the first antenna 2 and the second antenna 3 to form independent paths and avoid mutual interference.

[0034] In one embodiment, the wireless charging antenna W can be reused as a short-range wireless communication antenna N, further improving the integration of the display panel. Correspondingly, the second chip 52 can have a controller to control the wireless charging antenna W to simultaneously or separately perform the function of the short-range wireless communication antenna N.

[0035] As described above, the present invention provides a display panel and a display device, wherein the display panel includes: a light-emitting layer, a plurality of first antennas, and a second antenna. The plurality of first antennas are located on the light-emitting surface side of the light-emitting layer and are spaced apart from each other; the second antenna is located on the light-emitting surface side of the light-emitting layer and includes an isolation portion extending through the gap between two adjacent first antennas. Through the above method, the present application arranges a plurality of first antennas on the display area formed by the light-emitting layer to reduce the impact of the introduction of the first antenna on the screen-to-body ratio, which is beneficial for achieving a full-screen display. Furthermore, the second antenna is used to separate the first antennas, increasing the isolation between the first antennas.

[0036] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A display panel, characterized in that, The display panel includes: Emissive layer; Multiple first antennas are located on one side of the light-emitting surface of the light-emitting layer, and the multiple first antennas are arranged at intervals between each other; The second antenna is located on the light-emitting surface side of the light-emitting layer. The second antenna includes an isolation portion extending through the gap region between two adjacent first antennas. The isolation portion is spaced apart from the two adjacent first antennas. The second antenna includes a first end, a main body, and a second end that are connected to each other. The main body includes one or more coils. The first end and / or the second end form the isolation portion. The first end and the second end reflect, absorb, and cancel the electromagnetic waves emitted by the first antennas, changing the propagation path of the signal propagating between adjacent first antennas in the layer where the first antenna is located and in adjacent layers. The first antenna and the second antenna each form an independent path. The first antenna is set as a millimeter-wave antenna, and multiple first antennas are arranged to form a millimeter-wave antenna array. The second antenna is set as a non-millimeter-wave antenna.

2. The display panel according to claim 1, characterized in that, Multiple first antennas are arranged sequentially at intervals along the edge of the display panel.

3. The display panel according to claim 2, characterized in that, Multiple first antennas and multiple isolation sections are arranged alternately along one edge of the display panel.

4. The display panel according to claim 1, characterized in that, The coil extends along the edge of the display panel.

5. The display panel according to claim 1, characterized in that, The main body includes a plurality of coils, which are connected in series in a spiral arrangement, or the plurality of coils are all connected between the first end and the second end.

6. The display panel according to claim 1, characterized in that, The second antenna is configured as a wireless charging antenna or an NFC antenna.

7. The display panel according to claim 1, characterized in that, The display panel includes a metal mesh layer located on one side of the light-emitting surface of the light-emitting layer, and the first antenna and / or the second antenna are located in the metal mesh layer.

8. The display panel according to claim 7, characterized in that, The metal mesh layer is a touch layer.

9. A display device, characterized in that, The display panel includes any one of claims 1-8.

10. The display device according to claim 9, characterized in that, The first antenna is connected to a first chip, and the second antenna is connected to a second chip. The first chip and the second chip are mounted on the same circuit board.

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