Wireless communication module and display device

Abstract

The invention provides a wireless communication module and a display device. The wireless communication module comprises a circuit board and an antenna board. The circuit board is provided with a data interface and at least two wireless communication circuits electrically connected with the data interface. The data interface is used for data transmission with the main control board. The antenna board comprises a substrate and a plurality of antennas arranged on one side of the substrate, the antennas are arranged at intervals, and each wireless communication circuit is electrically connected with at least one antenna.

Description

Technical Field

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

[0002] Large-screen display devices, such as all-in-one conference machines, typically need to function as both wireless access points (APs) and network stations. In AP mode, they can connect to wireless networks for internet access; in Station mode, they can be connected to by other electronic devices, such as projecting content onto the display or controlling it via infrared. Therefore, a wireless communication module that provides both AP and Station functionality is required within the display device. Summary of the Invention

[0003] This disclosure provides some embodiments of a wireless communication module and a display device, such that the display device equipped with the wireless communication module has AP function and Station function.

[0004] In a first aspect, some embodiments of this disclosure provide a wireless communication module, including: a circuit board, having a data interface and at least two wireless communication circuits electrically connected to the data interface, the data interface being used for data transmission with a main control board; and an antenna board, including a substrate and a plurality of antennas disposed on one side of the substrate, the plurality of antennas being spaced apart, each of the wireless communication circuits being electrically connected to at least one of the antennas.

[0005] In some embodiments, the antenna includes a radiator and a feed point and a ground point electrically connected to the radiator, the feed point being electrically connected to the wireless communication circuit, and the ground point being electrically connected to a ground terminal in the circuit board.

[0006] In some embodiments, the antenna board further includes a feed pad and a ground pad disposed on the substrate, wherein the feed pad serves as the feed point and the ground pad serves as the ground point. The wireless communication module further includes a feed wire, one end of which is a welding head and the other end is provided with a female connector. The welding head includes an inner conductor and an outer conductor. The inner conductor is welded to the feed pad, and the outer conductor is welded to the ground pad. The female connector is plugged into a male connector disposed on the circuit board.

[0007] In some embodiments, the orthographic projections of the power pad and the ground pad onto the substrate surface are located within the orthographic projection range of the radiator onto the substrate surface.

[0008] In some embodiments, the radiator includes a first radiating segment, a second radiating segment, and a grounding segment connected in sequence. One end of the first radiating segment is electrically connected to the feed point, the second radiating segment is located between the feed point and the grounding point, and one end of the grounding segment is electrically connected to the grounding point. The grounding segment, the first radiating segment, and the second radiating segment each include a plurality of sub-segments that are bent and arranged.

[0009] In some embodiments, the grounding segment includes a first sub-segment, a second sub-segment, a third sub-segment, a fourth sub-segment, a fifth sub-segment, a sixth sub-segment, and a seventh sub-segment connected in sequence. The extension directions of the first sub-segment, the third sub-segment, the fifth sub-segment, and the seventh sub-segment are parallel to a first direction, and the extension directions of the second sub-segment, the fourth sub-segment, and the sixth sub-segment are parallel to a second direction. The first direction and the second direction are perpendicular.

[0010] In some embodiments, the fifth sub-segment is located between the third sub-segment and the seventh sub-segment, and the sixth sub-segment is located between the second sub-segment and the fourth sub-segment.

[0011] In some embodiments, the center lines of the first sub-segment and the seventh sub-segment are on a straight line; the edge line of the seventh sub-segment at the end away from the sixth sub-segment is a first edge line, and the edge line of the fourth sub-segment at the side away from the second sub-segment is a second edge line, and the first edge line and the second edge line are on a straight line.

[0012] In some embodiments, the length of the seventh segment is 7mm to 9mm.

[0013] In some embodiments, the second radiating segment includes an eighth sub-segment, a ninth sub-segment, and a tenth sub-segment connected in sequence, and the second radiating segment includes an eleventh sub-segment and a twelfth sub-segment connected to each other, wherein the end of the eleventh sub-segment away from the twelfth sub-segment is connected to the tenth sub-segment.

[0014] In some embodiments, the eighth sub-segment, the tenth sub-segment, and the twelfth sub-segment are arranged adjacent to each other and in parallel, the tenth sub-segment is located between the eighth sub-segment and the twelfth sub-segment, and the extension direction of the eighth sub-segment is parallel to the first direction; the eleventh sub-segment is closer to the grounding segment than the ninth sub-segment.

[0015] In some embodiments, the edge line of the twelfth sub-segment away from the eleventh sub-segment is the third edge line, and the edge line of the ninth sub-segment away from the ground segment is the fourth edge line, with the third edge line and the fourth edge line on a straight line.

[0016] In some embodiments, the length of the twelfth sub-segment is 17mm to 19mm.

[0017] In some embodiments, the gap width between parallel and adjacent segments of the radiator is 0.5 mm to 1.5 mm; the width of the radiator is 2 mm to 3 mm.

[0018] In some embodiments, the antenna plate includes a conductive layer located on one side of the substrate, the conductive layer including the plurality of antennas, and the other areas of the conductive layer besides the plurality of antennas are clearance areas.

[0019] In some embodiments, the at least two wireless communication circuits include a first wireless communication circuit and a second wireless communication circuit. The plurality of antennas include two sets of antennas, each set of antennas including at least one of the antennas, the two sets of antennas being a first set of antennas and a second set of antennas, respectively, each antenna in the first set of antennas being electrically connected to the first wireless communication circuit, and each antenna in the second set of antennas being electrically connected to the second wireless communication circuit.

[0020] In some embodiments, the first group of antennas includes a first antenna, a second antenna, and a third antenna, and the second group of antennas includes a fourth antenna and a fifth antenna. For example, the first antenna is a Bluetooth antenna, and the second antenna, the third antenna, the fourth antenna, and the fifth antenna are WiFi antennas.

[0021] In some embodiments, the first wireless communication circuit includes a first wireless processing chip and a first signal transceiver sub-circuit, a second signal transceiver sub-circuit, and a third signal transceiver sub-circuit, each electrically connected to the first wireless processing chip. The second wireless communication circuit includes a second wireless processing chip and a fourth signal transceiver sub-circuit and a fifth signal transceiver sub-circuit, each electrically connected to the second wireless processing chip. The first and second wireless processing chips are electrically connected to the data interface. The first signal transceiver sub-circuit is electrically connected to the first antenna, the second signal transceiver sub-circuit is electrically connected to the second antenna, the third signal transceiver sub-circuit is electrically connected to the third antenna, the fourth signal transceiver sub-circuit is electrically connected to the fourth antenna, and the fifth signal transceiver sub-circuit is electrically connected to the fifth antenna.

[0022] In some embodiments, the WiFi antenna is a dual-band WiFi antenna. The second, third, fourth, and fifth signal transceiver sub-circuits are dual-band signal transceiver sub-circuits, each including a first-band signal transceiver sub-circuit, a second-band signal transceiver sub-circuit, and a duplexer. The first-band signal transceiver sub-circuit and the second-band signal transceiver sub-circuit are electrically connected to the same dual-band WiFi antenna via the duplexer.

[0023] Secondly, some embodiments of this disclosure provide a display device, including: a front frame assembly, including a side frame and a rear housing; a display module disposed within a first accommodating space formed by the side frame and the rear housing; a main control board disposed between the back plate of the display module and the rear housing, and electrically connected to the display module; and a wireless communication module provided in the first aspect above, wherein the data interface in the wireless communication module is electrically connected to the main control board via a data cable.

[0024] In some embodiments, the side frame is provided with a second receiving space, and the wireless communication module is disposed in the second receiving space.

[0025] In some embodiments of the wireless communication module provided in this disclosure, at least two wireless communication circuits are provided, which can be used to provide AP function and Station function respectively. Furthermore, the at least two wireless communication circuits are integrated onto a single circuit board and connected to the main control board via the same data interface. The antennas connected to the at least two wireless communication circuits are also mounted on a separate antenna board. This simplifies the backplane wiring of the display device while ensuring good antenna radiation characteristics.

[0026] The above description is merely an overview of the technical solutions provided by the embodiments of this disclosure. In order to better understand the technical means of the embodiments of this disclosure and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this disclosure more apparent and understandable, specific implementation methods of the embodiments of this disclosure are described below. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0028] Figure 1 The present disclosure shows a schematic diagram of the structure of a wireless communication module according to some embodiments;

[0029] Figure 2 A circuit structure block diagram of a circuit board according to some embodiments of the present disclosure is shown;

[0030] Figure 3A A plan view of the first side of an antenna plate according to some embodiments of the present disclosure is shown;

[0031] Figure 3B A plan view of the second side of an antenna plate according to some embodiments of the present disclosure is shown;

[0032] Figure 4A A schematic diagram of the antenna structure according to some embodiments of this disclosure is shown;

[0033] Figure 4B A segmented schematic diagram of a radiator according to some embodiments of this disclosure is shown;

[0034] Figure 5 S11 curves for antennas with different slot widths according to some embodiments of this disclosure are shown;

[0035] Figure 6 S11 curves for antennas with different radiator widths according to some embodiments of this disclosure are shown;

[0036] Figure 7 S11 plots of antennas with different seventh segment lengths according to some embodiments of this disclosure are shown;

[0037] Figure 8 S11 plots of antennas with different twelfth segment lengths according to some embodiments of this disclosure are shown;

[0038] Figure 9 A schematic diagram of the connection between the wireless communication module and the main control board according to some embodiments of this disclosure is shown;

[0039] Figure 10 A system architecture diagram of a display device according to some embodiments of the present disclosure is shown;

[0040] Figure 11 A schematic diagram of the structure of a display device according to some embodiments of the present disclosure is shown. Detailed Implementation

[0041] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0042] It should be noted that the term "at least one" in this article includes one or more cases, while the terms "at least two" and "multiple" include two or more cases. Words such as "including" or "contains" mean that the element or object preceding the word covers the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "up," "down," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0044] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0045] The frequency range of an antenna refers to the range of frequencies within which the antenna can operate. Different wireless communication systems require different frequency ranges, therefore the antenna's frequency range should be able to cover the required frequency range.

[0046] The reflection coefficient refers to the ratio of the high-frequency energy transmitted through the feed line to the incident wave when the feed line and antenna are matched. In this case, the high-frequency energy is completely absorbed and radiated by the antenna, resulting in only the incident wave on the feed line and no reflected wave. The feed line transmits a traveling wave with equal voltage amplitude at all points, and the impedance at any point on the feed line is equal to its characteristic impedance. However, when the antenna and feed line are mismatched, meaning the antenna impedance is not equal to the feed line's characteristic impedance, the antenna cannot absorb all the high-frequency energy transmitted through the feed line, and the reflected energy forms a reflected wave. In this mismatched situation, a reflected wave is generated at the antenna end, and the two waves superimpose to form a standing wave. The ratio of the amplitude of the reflected wave to the amplitude of the incident wave is called the reflection coefficient.

[0047] Antenna return loss can be represented by the S11 parameter, which is one of the S-parameters. S11 represents the reflection coefficient, and this parameter characterizes the antenna's transmission efficiency. The S11 parameter is usually negative. The smaller the S11 parameter, the smaller the antenna return loss, the less energy the antenna reflects back, meaning more energy actually enters the antenna, and the higher the antenna's system efficiency. Conversely, the larger the S11 parameter, the greater the antenna return loss, and the lower the antenna's system efficiency. It should be noted that in engineering, an S11 value of -6dB is generally used as a standard. When the antenna's S11 value is less than -6dB, the antenna can be considered to be operating normally, or its transmission efficiency can be considered to be good.

[0048] Antenna isolation is the ratio of the input power at one port of a dual-polarized antenna to the coupling power at the other port. For example, it can be the ratio of the signal received by one antenna through another to the signal received by the transmitting antenna. Isolation is a physical quantity used to measure the degree of mutual coupling between antennas. Assuming two antennas form a two-port network, the isolation between the two antennas is represented by their S21 and S12 values. Antenna isolation can be expressed using the S21 and S12 parameters. These parameters are typically negative. Smaller S21 and S12 values ​​indicate greater isolation and less mutual coupling between antennas; larger S21 and S12 values ​​indicate less isolation and greater mutual coupling. Antenna isolation depends on the antenna radiation pattern, the spatial distance between the antennas, and the antenna gain.

[0049] Antenna efficiency is the ratio of the power radiated by the antenna (i.e. the power that is effectively converted into electromagnetic waves) to the active power input to the antenna.

[0050] Antenna gain refers to the increase in power of an antenna relative to an ideal coaxial cable antenna in a specific direction. Higher gain results in better reception and transmission. Antenna gain is related to the antenna's directivity; higher directivity leads to higher gain.

[0051] To meet the requirements of large-screen display devices such as conference all-in-one machines, which need both access point (AP) and station functions, the common solution is to directly connect two wireless fidelity (WiFi) communication modules to the main control board of the device, such as a system-on-chip (SoC) board. However, since the back panel of such large-screen display devices is mostly metal, directly connecting two WiFi modules to the main control board can affect the antenna's radiation characteristics due to the metal back panel, resulting in significantly weakened signal transmission. Furthermore, since there is no space within the display device to house two WiFi modules, the wiring becomes quite messy.

[0052] In view of this, some embodiments of this disclosure provide a wireless communication module that can be applied to large-size display devices such as all-in-one conference machines. The wireless communication module includes a circuit board and an antenna board. The circuit board is provided with a data interface and at least two wireless communication circuits electrically connected to the data interface. The data interface is used for data transmission with a main control board. The antenna board includes a substrate and a plurality of antennas disposed on one side of the substrate, the antennas being spaced apart, and each wireless communication circuit being electrically connected to at least one antenna.

[0053] The aforementioned at least two wireless communication circuits and their corresponding connected antennas can constitute at least two wireless communication modules, which can be used to provide AP (Access Point) and Station (Station) functions, respectively. Integrating the at least two wireless communication circuits within the wireless communication module onto the same circuit board allows for electrical connection to the main control board via a single data interface, such as a Universal Serial Bus (USB) interface. This simplifies the backplane wiring of large-size display devices. Furthermore, placing the antennas corresponding to the at least two wireless communication circuits on the same antenna board—that is, setting up an integrated multi-antenna system independent of the circuit board—ensures that the antennas have good radiation characteristics.

[0054] The aforementioned at least two wireless communication circuits can be two, three, or four, etc., and can be set according to the needs of the actual application scenario. The embodiments of this disclosure are mainly illustrated by setting two wireless communication circuits as an example. When the wireless communication module includes two wireless communication circuits and their corresponding antennas, the wireless communication module includes two wireless communication modules.

[0055] Figure 1 A schematic diagram of the structure of a wireless communication module according to some embodiments of this disclosure is shown. For example... Figure 1 As shown, the wireless communication module 1 includes a first wireless communication circuit 11 and a second wireless communication circuit 12 disposed on the circuit board 10. At this time, the aforementioned plurality of antennas includes two sets of antennas, each set including at least one antenna, the two sets being a first set of antennas and a second set of antennas, respectively. Each antenna in the first set is electrically connected to the first wireless communication circuit 11, and each antenna in the second set is electrically connected to the second wireless communication circuit 12.

[0056] like Figure 1 As shown, in some embodiments, the first set of antennas may include a first antenna, a second antenna, and a third antenna, and the second set of antennas may include a fourth antenna and a fifth antenna. For example, when the wireless communication module 1 is a dual WiFi module, the first antenna may be a Bluetooth antenna, and the second antenna, the third antenna, the fourth antenna, and the fifth antenna may be WiFi antennas. For example, the aforementioned WiFi antenna may be a dual-band WiFi antenna. For example, the operating frequency band of the WiFi antenna may include the 2.4 GHz band and the 5.8 GHz band. In this case, the low-frequency band of the WiFi antenna and the Bluetooth antenna operate in the same frequency band, such as the 2412 MHz-2482 MHz band.

[0057] For example, the first wireless communication circuit 11, together with two connected dual-band WiFi antennas and one Bluetooth antenna, constitutes a first WiFi module with both WiFi and Bluetooth communication functions. The first wireless communication circuit 11, together with the two connected dual-band WiFi antennas, constitutes a second WiFi module with WiFi communication function. For example, the first WiFi module and the second WiFi module can each be either a WiFi 5 communication module or a WiFi 6 communication module, or both can be WiFi 6 communication modules.

[0058] The first WiFi module can be used as a Station, and the second WiFi module can be used as an Access Point (AP). An AP is a wireless access point, the creator of a wireless network, and the central node of the network. For example, a wireless router used in a home or office is an AP. A Station, also called a Site or STA, is any terminal connected to the wireless network, such as a laptop, PDA, or other network-connected user device. During the link establishment process between the Station and the AP, when the STA scans for an accessible Service Set Identifier (SSID) through Beacon or Probe Response frames, it selects the appropriate SSID for access based on the Received Signal Strength Indication (RSSI) of the received Beacon or Probe Response frames.

[0059] Figure 2 A circuit structure block diagram of a circuit board 10 according to some embodiments of this disclosure is shown. For example... Figure 2 As shown, the first wireless communication circuit 11 may include a first wireless processing chip 110, a first signal transceiver sub-circuit 111, a second signal transceiver sub-circuit 112, and a third signal transceiver sub-circuit 113. The second wireless communication circuit 12 includes a second wireless processing chip 120, a fourth signal transceiver sub-circuit 121, and a fifth signal transceiver sub-circuit 122. The first wireless processing chip 110 and the second wireless processing chip 120 are electrically connected to the data interface 13. For example, the main control board 3 can provide the required power supply voltage (e.g., 3.3V) and communication control signals to the first wireless processing chip 110 and the second wireless processing chip 120 respectively through the data interface 13. The first signal transceiver sub-circuit 111, the second signal transceiver sub-circuit 112, and the third signal transceiver sub-circuit 113 are electrically connected to the first wireless processing chip 110. The fourth signal transceiver sub-circuit 121 and the fifth signal transceiver sub-circuit 122 are electrically connected to the second wireless processing chip 120.

[0060] It is understandable that, in addition to connecting the signal transceiver sub-circuit, the first wireless processing chip 110 and the second wireless processing chip 120 are also connected to other peripheral sub-circuits set on the circuit board 10, such as a 40MHz crystal oscillator, as detailed in the relevant technology.

[0061] The first signal transceiver circuit 111 is electrically connected to the first antenna, the second signal transceiver circuit 112 is electrically connected to the second antenna, the third signal transceiver circuit 113 is electrically connected to the third antenna, the fourth signal transceiver circuit 121 is electrically connected to the fourth antenna, and the fifth signal transceiver circuit 122 is electrically connected to the fifth antenna.

[0062] In some embodiments, when the first antenna is a single-frequency antenna and the second, third, fourth, and fifth antennas are dual-frequency antennas, the first wireless processing chip 110 and the second wireless processing chip 120 can support radio frequency signal processing in two frequency bands. The first signal transceiver sub-circuit 111 can be a single-frequency signal transceiver sub-circuit, and the second, third, fourth, and fifth signal transceiver sub-circuits 112, 113, 114, and 115 can be dual-frequency signal transceiver sub-circuits. The dual-frequency signal transceiver sub-circuit can include a first-band signal transceiver sub-circuit, a second-band signal transceiver sub-circuit, and a duplexer. The first-band and second-band signal transceiver sub-circuits can be electrically connected to the same dual-frequency antenna through the duplexer to achieve transmission and reception of first-band and second-band signals through the same dual-frequency antenna. The first and second frequency bands can be determined according to actual communication needs.

[0063] For example, such as Figure 2 As shown, when the first antenna is a 2.4G Bluetooth antenna, and the second, third, fourth, and fifth antennas are 2.4G / 5.8G dual-band WiFi antennas, the first wireless processing chip 110 and the second wireless processing chip 120 can support both the 2.4G and 5.8G frequency bands. The first signal transceiver circuit 111 can be a 2.4G wireless signal transceiver circuit, electrically connected to the Bluetooth antenna. The second, third, fourth, and fifth signal transceiver circuits 121 and 122 can each include a 2.4G wireless signal transceiver circuit 101, a 5.8G wireless signal transceiver circuit 103, and a duplexer 103, respectively. The 2.4G wireless signal transceiver circuit 101 and the 5.8G wireless signal transceiver circuit 102 are electrically connected to the same dual-band WiFi antenna via the duplexer 103.

[0064] Figure 3A A plan view of the first side of the antenna plate 20 according to some embodiments of the present disclosure is shown. Figure 3B A plan view of the second side of an antenna plate 20 according to some embodiments of this disclosure is shown. (See diagram below.) Figure 3A As shown, multiple antennas 210 are arranged at intervals on the antenna plate 20. Figure 3A The illustration uses five antennas 210 as an example. The specific number of antennas 210 can be determined according to the needs of the actual application scenario. In some embodiments, to simplify the design, the multiple antennas 210 arranged on the antenna plate 20 can be the same dual-band WiFi antenna. Of course, in other embodiments, the shape and size of the multiple antennas 210 arranged on the antenna plate 20 can be different, depending on the needs of the actual application scenario, and this disclosure does not impose any limitations on this.

[0065] by Figure 3A In this diagram, the X-axis represents the length direction, the Y-axis represents the width direction, the overall length of the antenna plate 20 is denoted as L, and the width is denoted as W. The overall length of each antenna 210 is denoted as La, and the width is denoted as W. a The spacing between adjacent antennas 210 is denoted as d. For example, Figure 3A The five antennas 210 shown can be four dual-band WiFi antennas and one Bluetooth antenna, and all five antennas 210 use the same dual-band WiFi antenna. For example, L can be 23cm to 24.5cm, such as 23cm, 24cm, or 24.5cm; W can be 1cm to 1.5cm, such as 1cm, 1.3cm, or 1.5cm; La can be 2.65cm to 2.75cm, such as 2.65cm, 2.7cm, or 2.75cm; W a The value can be 0.9cm to 1cm, such as 0.9cm, 0.95cm or 1cm; d can be greater than 2.4cm to ensure the isolation between adjacent antennas 210, such as 2.5cm or 2.7cm.

[0066] like Figure 3A As shown, in some embodiments, the antenna plate 20 includes a conductive layer located on a first side 200A of the substrate 200. This conductive layer includes conductive patterns of the plurality of antennas 210, and the area of ​​the conductive layer other than the plurality of antennas 210 is a clearance area 220. Since the antenna plate 20 does not need to be equipped with any other electronic components besides the antennas 210, the area of ​​the conductive layer other than the antenna patterns can be cleared, which helps to reduce interference to the antenna.

[0067] Figure 4A The present disclosure shows a schematic diagram of the antenna structure according to some embodiments. Figure 4B A segmented schematic diagram of a radiator according to some embodiments of the present disclosure is shown. It should be noted that the radiator 211 is integrally formed. Figure 4A and Figure 4B The dashed lines in the text are merely virtual markers used to delineate different sections within the text. For example... Figure 4A As shown, antenna 210 may include radiator 211 and a feed point K and a ground point G electrically connected to radiator 211. Feed point K is electrically connected to the aforementioned wireless communication circuit, and ground point G is electrically connected to the ground terminal in circuit board 10. For example, feed point K of antenna 210 of first wireless communication circuit 11 is electrically connected to first wireless communication circuit 11, and feed point K of antenna 210 of second wireless communication circuit 12 is electrically connected to second wireless communication circuit 12.

[0068] It is understood that the radiator 211 is a device in the antenna used to receive / transmit electromagnetic wave radiation. In some cases, the term "antenna" is narrowly interpreted as the radiator 211, which converts guided wave energy from the transmitter in the aforementioned wireless signal transceiver sub-circuit into radio waves, or converts radio waves into guided wave energy, for radiating and receiving radio waves. The modulated high-frequency current energy (or guided wave energy) generated by the transmitter is transmitted to the transmitting radiator 211 via a feed line, where it is converted into electromagnetic wave energy of a certain polarization and radiated in the desired direction. The receiving radiator 211 converts electromagnetic wave energy of a certain polarization from a specific direction in space back into modulated high-frequency current energy, which is then transmitted to the input terminal of the receiver in the aforementioned wireless signal transceiver sub-circuit via a feed line.

[0069] Since the antenna 210 and the wireless communication circuit to be connected are not on the same board, the wireless communication module 1 also includes a feed line 30, which enables the connection between the feed point K on the antenna board 20 and the wireless communication circuit on the circuit board 10.

[0070] In some embodiments, the antenna board 20 includes a feed pad P1 and a ground pad P2 disposed on the substrate 200. The feed pad P1 serves as a feed point K, and the ground pad P2 serves as a ground point G. This eliminates the need for a ground plane on the antenna board 20. By connecting the ground pad P2 to the ground terminal on the circuit board 10, the ground point G of the antenna 210 is grounded, which helps reduce interference to the antenna 210. For example, the radiators 211 of each antenna 210 can be disposed on the first side 200A of the substrate 200, such as... Figure 3A As shown, the feed pad P1 and ground pad P2 of each antenna 210 can be disposed on the second side 200B of the substrate 200, such as... Figure 3B As shown, the area excluding the feed pad P1 and ground pad P2 is a clearance area 220 to minimize interference to the antenna 210. The feed pad P1 and ground pad P2 can be electrically connected to their respective opposite radiators 211 via vias. For example, the feed pad P1 and ground pad P2 can be connected along a second direction (e.g., ...). Figure 3BArranged along the Y-axis (in the image), the shape can be square.

[0071] In some embodiments, the orthographic projections of the feed pad P1 and the ground pad P2 onto the surface of the substrate 200 are located within the orthographic projection range of the radiator 211 of the antenna 210 onto the surface of the substrate 200. That is, the feed pad P1 and the ground pad P2 do not exceed the coverage area of ​​the radiator 211, which helps to further reduce interference to the antenna 210. For example, Figure 4A The feed point K and ground point G diagrams shown can be the coverage areas of feed pad P1 and ground pad P2, respectively.

[0072] In some embodiments, the feed line 30 can be a coaxial cable, for example, an IPEX cable. One end of the feed line 30 can be a solder joint, and the other end can be provided with a female connector. The solder joint includes an inner conductor and an outer conductor. The inner conductor is soldered to the feed pad P1, and the outer conductor is soldered to the ground pad P2. The female connector can be plugged into a male connector provided on the circuit board 10 to facilitate the installation and use of the antenna board 20. In this way, the antenna 210 can be fed and grounded using a coaxial cable. For example, considering that the diameter of the inner conductor of the coaxial cable is smaller than the diameter of the outer conductor, the area of ​​the feed pad P1 can be smaller than the area of ​​the ground pad P2.

[0073] The device layer of circuit board 10 is provided with male connector pads for the feed line, and male connectors that are compatible with the female connectors of the feed line 30 are soldered onto the male connector pads. The pads in the male connector pads used to connect the inner conductor are electrically connected to the wireless communication circuit through traces on circuit board 10, and the pads used to connect the outer conductor are electrically connected to the ground area of ​​the device layer, thereby being electrically connected to the ground layer in circuit board 10.

[0074] like Figure 4A As shown, in some embodiments, when antenna 210 is a dual-band antenna, radiator 211 may include a first radiating segment 33, a second radiating segment 32, and a grounding segment 31 connected in sequence. One end of the first radiating segment 33 is electrically connected to feed point K, the second radiating segment 32 is located between feed point K and grounding point G, and one end of grounding segment 31 is electrically connected to grounding point G. For example, the first radiating segment 33 is the low-frequency radiating segment of the dual-band antenna, and the second radiating segment 32 is the high-frequency radiating segment of the dual-band antenna. The length and shape of grounding segment 31 affect the impedance matching of antenna 210, and the shape and length of the first radiating segment 33 and the second radiating segment 32 affect the operating frequency band of antenna 210.

[0075] In some embodiments, the grounding segment 31, the first radiating segment 33, and the second radiating segment 32 may each include multiple bent sub-segments, i.e., multiple sub-segments, with adjacent sub-segments connected by bends at a certain angle, presenting a bent strip structure. This can reduce the space occupied by the antenna plate 20, and with a fixed size of the antenna plate 20, ensure sufficient spacing between adjacent antennas to meet the antenna isolation requirements.

[0076] like Figure 4A As shown, in some embodiments, the first radiating segment 33 and the second radiating segment 32 can be arranged along a second direction, and the radiating segment formed by the first radiating segment 33 and the second radiating segment 32 can be arranged along a first direction with the grounding segment 31. The first direction is perpendicular to the second direction; for example, the first direction can be... Figure 4A The X-axis direction, the second direction can be Figure 4A The Y-axis direction is used. This helps to reduce the size of the antenna 210 while meeting the antenna characteristic requirements, thereby reducing the size of the antenna plate 20. Based on this, multiple antennas 210 on the antenna plate 20 can be arranged sequentially at intervals along the first direction. In this way, among two adjacent antennas 210, the radiating segment (including the first radiating segment 33 and the second radiating segment 32) of one antenna 210 is close to the grounding segment 33 of the other antenna 210, which helps to further reduce the interference between adjacent antennas 210 on the antenna plate 20.

[0077] like Figure 4B As shown, in some embodiments, the grounding segment 31 may include a first sub-segment 311, a second sub-segment 312, a third sub-segment 313, a fourth sub-segment 314, a fifth sub-segment 315, a sixth sub-segment 316, and a seventh sub-segment 317 connected in sequence. The extension directions of the first sub-segment 311, the third sub-segment 313, the fifth sub-segment 315, and the seventh sub-segment 317 are parallel to a first direction, and the extension directions of the second sub-segment 312, the fourth sub-segment 314, and the sixth sub-segment 316 are parallel to a second direction.

[0078] For example, such as Figure 4BAs shown, the first direction is the X-axis direction, the second direction is the Y-axis direction, the first sub-segment 311 extends from the grounding point G along the positive X-axis direction, the second sub-segment 312 extends from the end of the first sub-segment 311 away from the grounding point G along the negative Y-axis direction, the third sub-segment 313 extends from the end of the second sub-segment 312 away from the first sub-segment 311 along the positive X-axis direction, the fourth sub-segment 314 extends from the end of the third sub-segment 313 away from the second sub-segment 312 along the positive Y-axis direction, the fifth sub-segment 315 extends from the end of the fourth sub-segment 314 away from the third sub-segment 313 along the negative X-axis direction, the sixth sub-segment 316 extends from the end of the fifth sub-segment 315 away from the fourth sub-segment 314 along the positive Y-axis direction, and the seventh sub-segment 317 extends from the end of the sixth sub-segment 316 away from the fifth sub-segment 315 along the positive X-axis direction. At this point, the fifth sub-segment 315 is located between the third sub-segment 313 and the seventh sub-segment 317, and the sixth sub-segment 316 is located between the second sub-segment 312 and the fourth sub-segment 314. By bending these sub-segments back and forth, the length requirement of the grounding segment 31 can be met while reducing the size of the grounding segment in the X and Y axis directions, thereby helping to reduce the space occupied by the antenna board 20.

[0079] For example, the lengths of the fifth sub-segment 315 and the seventh sub-segment 317 can be less than the length of the third sub-segment 313. For example, the lengths of the fifth sub-segment 315 and the seventh sub-segment 317 can be equal. For example, the lengths of the fourth sub-segment 314 and the sixth sub-segment 316 can be less than the length of the second sub-segment 312.

[0080] For example, the center lines of the first sub-segment 311 and the seventh sub-segment 317 can be on a straight line M1, which is beneficial to maximize the extension length of the deployed sub-segments within the width range from the first sub-segment 311 to the third sub-segment 313.

[0081] For example, along the first direction, the end of the seventh sub-segment 317 furthest from the sixth sub-segment 316 does not exceed the extension of the fourth sub-segment 314, thereby limiting the fifth sub-segment 315, the sixth sub-segment 316, and the seventh sub-segment 317 to the length range from the second sub-segment 312 to the fourth sub-segment 314, which helps to reduce the length of the antenna plate area occupied by the grounding segment 31. Figure 4B As shown, the end of the seventh sub-segment 317 furthest from the sixth sub-segment 316 can be flush with the fourth sub-segment 314 in the Y-axis direction. For example, the edge line of the end of the seventh sub-segment 317 furthest from the sixth sub-segment 316 is the first edge line 317a, and the edge line of the fourth sub-segment 314 furthest from the second sub-segment 312 is the second edge line 314a. The first edge line 317a and the second edge line 314a can be on a straight line. This makes the arrangement of the grounding segments 31 more orderly, and allows for a sufficient length of grounding segments 31 to be arranged within a relatively small width range on the antenna plate 20 to meet the antenna performance requirements.

[0082] like Figure 4B As shown, in some embodiments, the second radiating segment 32 may include an eighth sub-segment 321, a ninth sub-segment 322, and a tenth sub-segment 323 connected in sequence. The first radiating segment 33 may include an eleventh sub-segment 331 and a twelfth sub-segment 332 connected to each other. The end of the eleventh sub-segment 331 away from the twelfth sub-segment 332 is connected to the tenth sub-segment 323. The eighth sub-segment 321, the tenth sub-segment 323, and the twelfth sub-segment 332 are adjacent and parallel, with the tenth sub-segment 323 located between the eighth sub-segment 321 and the twelfth sub-segment 332. The eleventh sub-segment 331 is closer to the grounding segment 31 than the ninth sub-segment 322. For example, the spacing between the power supply pad P1 and the ground pad P2 may be equal to the spacing between the eighth sub-segment 321 and the tenth sub-segment 323, that is, the power supply pad P1 and the ground pad P2 are separated by the gap between the eighth sub-segment 321 and the tenth sub-segment 323.

[0083] For example, the extension directions of the eighth sub-segment 321, the tenth sub-segment 323, and the twelfth sub-segment 332 are parallel to the first direction (e.g., Figure 4B The X-axis direction in the grounding segment 31 is parallel to the first sub-segment 311, the third sub-segment 313, the fifth sub-segment 315, and the seventh sub-segment 317; the extension directions of the ninth sub-segment 322 and the eleventh sub-segment 331 are parallel to the second direction (e.g., the X-axis direction in the grounding segment 31). Figure 4B (in the Y-axis direction), that is, parallel to the second sub-segment 312, the fourth sub-segment 314, and the sixth sub-segment 316 of the grounding segment 31. For example, the length of the eighth sub-segment 321 can be greater than the length of the first sub-segment 311.

[0084] For example, such as Figure 4B As shown, the eighth sub-segment 321 extends from the grounding point G along the negative X-axis direction; the ninth sub-segment 322 extends from the end of the eighth sub-segment 321 away from the grounding point G along the negative Y-axis direction; the tenth sub-segment 323 extends from the end of the ninth sub-segment 322 away from the eighth sub-segment 321 along the positive X-axis direction and connects to the feed point K; the eleventh sub-segment 331 extends from the feed point K along the negative Y-axis direction; and the twelfth sub-segment 332 extends from the end of the eleventh sub-segment 331 away from the feed point K along the negative X-axis direction. Through the back-and-forth bending of these sub-segments, the length requirements of the first radiating segment 33 and the second radiating segment 32 are met while reducing the space occupied by the first radiating segment 33 and the second radiating segment 32 on the antenna board 20.

[0085] For example, the center lines of the eighth sub-segment 321 and the first sub-segment 311 can be on a straight line M1, the center lines of the tenth sub-segment 323 and the fifth sub-segment 315 can be on a straight line M2, and the center lines of the twelfth sub-segment 332 and the third sub-segment 313 can be on a straight line M3. This makes the dimensions of the first radiating segment 33 plus the second radiating segment 32 in the Y-axis direction equal to the dimensions of the grounding segment 31 in the Y-axis direction, minimizing the space occupied by the radiator 211 in the antenna plate 20 in the Y-axis direction, thereby helping to reduce the width of the antenna plate 20.

[0086] For example, along the first direction, the end of the twelfth sub-segment 332 furthest from the eleventh sub-segment 331 does not exceed the extension of the ninth sub-segment 322. Figure 4B As shown, the end of the twelfth sub-segment 332 furthest from the eleventh sub-segment 331 can be flush with the ninth sub-segment 322 in the Y-axis direction. The edge line of the end of the twelfth sub-segment 332 furthest from the eleventh sub-segment 331 is the third edge line 332a, and the edge line of the ninth sub-segment 322 furthest from the ground segment 31 is the fourth edge line 322a. The third edge line 332a and the fourth edge line 322a are on a straight line. This allows for a more orderly arrangement of the first radiating segment 33 and the second radiating segment 32, arranging sufficiently long first radiating segments 33 and second radiating segments 32 within a relatively small width range on the antenna plate 20 to meet the antenna performance requirements.

[0087] Figure 4A The antenna radiators 211 shown are distributed in a rectangular area, which can reduce the space occupied by a single antenna board while meeting the antenna performance requirements, thus reducing the size of the antenna board 20.

[0088] It should be noted that there are gaps between the parallel and adjacent sub-segments in the radiating element 211 of the antenna. For example... Figure 4A As shown, the bent sub-segments of the grounding section 31 can form an "L" shaped gap and an "I" shaped gap; an inverted "L" shaped gap can be formed between the first radiating section 33, the second radiating section 32 and the grounding section 31; and an "I" shaped gap can be formed between the second radiating section 32 and the first radiating section 33.

[0089] Simulation tests showed that the width S1 of the aforementioned gap, the width W1 of the radiator 211, the length L1 of the seventh sub-segment 317, and the length L2 of the twelfth sub-segment 332 affect the operating frequency band of the antenna.

[0090] For example, the gap width S1 can be 0.5mm to 1.5mm, such as 0.5mm, 1mm or 1.5mm. Figure 5 The following are S11 curves for antennas with different slot widths according to some embodiments of this disclosure. Figure 5The red curve in the graph represents the S11 curve for an antenna with an S1 value of 0.5 mm, the green curve represents the S11 curve for an antenna with an S1 value of 1 mm, and the blue curve represents the S11 curve for an antenna with an S1 value of 1.5 mm. The horizontal axis of the S11 curve represents frequency, and the vertical axis represents the S11 value of the antenna, in dB. Figure 5 It can be seen that the slot width S1 affects both the 2.4GHz band (e.g., 2.4GHz-2.48GHz) and the 5GHz band (e.g., 5.15GHz-5.85GHz). A larger slot shifts the operating frequency band further down the band. Furthermore, the slot width S1 also affects the impedance matching in the 5GHz band. When the slot varies between 0.5mm and 1.5mm, a slot size of 1mm results in better impedance matching and a wider bandwidth for the antenna.

[0091] For example, the width W1 of the radiator 211 can be 2mm to 3mm, such as 2mm, 2.5mm or 3mm. Figure 6 The following are S11 curves for antennas with different radiator widths according to some embodiments of this disclosure. Figure 6 The red curve in the graph represents the S11 curve for an antenna with W1 of 2mm, the green curve represents the S11 curve for an antenna with W1 of 2.5mm, and the blue curve represents the S11 curve for an antenna with W1 of 3mm. From... Figure 6 It can be seen that the width W1 of radiator 211 has little impact on the low-frequency 2.4GHz band, but a greater impact on the 5GHz band. The larger the width W1, the lower the operating frequency band shifts, but the range of shift is relatively small. When the width W1 varies between 2mm and 3mm, a width of 2.5mm results in better impedance matching and a wider bandwidth.

[0092] For example, the length L1 of the seventh sub-segment 317 can be 7mm to 9mm, such as 7mm, 8mm or 9mm. Figure 7 The following diagrams show the S11 curves for antennas with different seventh segment 317 lengths according to some embodiments of this disclosure. Figure 7 The red curve in the graph represents the S11 curve for an antenna with an L1 of 7mm, the green curve represents the S11 curve for an antenna with an L1 of 8mm, and the blue curve represents the S11 curve for an antenna with an L1 of 9mm. From... Figure 7 It can be seen that the length L1 of the seventh sub-segment 317 affects both the low-frequency 2.4GHz band and the 5GHz band. When L1 is larger, the operating frequency shifts further down the frequency band, and it also has some impact on the impedance matching of the 5GHz band.

[0093] For example, the length L2 of the twelfth sub-segment 332 can be 17mm to 19mm, such as 17mm, 18mm or 19mm. Figure 8 The following diagrams show the S11 curves for antennas with different twelfth segment 332 lengths according to some embodiments of this disclosure. Figure 8 The red curve in the graph represents the S11 curve for an antenna with an L2 of 17mm, the green curve represents the S11 curve for an antenna with an L2 of 18mm, and the blue curve represents the S11 curve for an antenna with an L2 of 19mm. From... Figure 8 It can be seen that the length L2 of the twelfth sub-segment 332 has little impact on the low-frequency 2.4GHz band, but has a certain impact on the bandwidth of the 5GHz band. The smaller L2 is, the larger the bandwidth of the 5GHz band.

[0094] To verify the performance of the antenna board 20 mentioned above, Figure 3A and Figure 3B An exemplary antenna board 20 was shown and its performance was tested. The dimensional parameters of the antenna board 20 are as follows: board length L is 24.5cm, board width W is 1.5cm, the length of a single antenna is 2.7cm, the width is 0.95cm, and the spacing d between adjacent antennas is 2.7cm.

[0095] The S11 specification was tested for each antenna in the antenna board 20. From Figure 3A From right to left, the four WiFi antennas are labeled WIFI1, WIFI2, WIFI3, and WIFI4, and the Bluetooth antenna is labeled BT. The operating frequency ranges of WiFi1 to WIFI4 are 2.4GHz-2.48GHz and 5.15GHz-5.85GHz, respectively, while the Bluetooth antenna operates in the 2.4GHz-2.48GHz frequency range. Table 1 lists the S11 values ​​at six marked points within the antenna's frequency range. As shown in Table 1, within the antenna's operating bandwidth, the S11 value is less than -10dB, indicating good antenna resonance characteristics.

[0096] Table 1

[0097]

[0098] The S21 index was tested on adjacent antennas in antenna board 20, namely WIFI1 & WIFI2, WIFI2 & WIFI3, WIFI3 & WIFI4, and WIFI4 & BT. The test results are shown in Table 2. From the S21 index test results in Table 2, the isolation results within the operating bandwidth of these antennas are less than -15dB, indicating good isolation between adjacent antennas and that the antennas do not interfere with each other.

[0099] Table 2

[0100]

[0101] In addition, efficiency (%) tests were performed on each antenna in antenna board 20, and the test results are shown in Table 3. The efficiency test results in Table 3 show that the antennas have high efficiency and can meet practical requirements.

[0102] Table 3

[0103]

[0104] Therefore, based on the above test results, the present invention integrates the antennas of each wireless communication circuit on the same antenna board 20 and designs the antenna shape to ensure that the antenna has good radiation characteristics.

[0105] Some embodiments of this disclosure also provide a display device, which includes a faceplate assembly, a display module 2, a main control board 3, and a wireless communication module 1 provided in any of the embodiments above.

[0106] The bezel assembly includes side frames and a rear housing. The display module 2 is disposed within a first receiving space formed by the side frames and the rear housing. For example, the display module 2 may include a display panel, a display driver board, and a backplate. For example, the display panel may be an OLED (Organic Light-Emitting Diode) display panel, or a QLED (Quantum Dot Light-Emitting Diodes) display panel, or an LCD (Liquid Crystal Display) panel. The backplate is located on the backlight side of the display panel and may be made of a metallic material.

[0107] The main control board 3 is disposed between the back plate of the display module 2 and the rear housing. The main control board 3 is electrically connected to the display module 2, for example, it can be electrically connected to the display driver board in the display module 2 to transmit display signals to the display driver board.

[0108] Figure 9 This diagram illustrates the connection between the wireless communication module 1 and the main control board 3 according to some embodiments of this disclosure, such as... Figure 9As shown, the data interface 13 in the wireless communication module 1 is electrically connected to the main control board 3 via a data cable. Data transmission between the various wireless communication circuits included in the wireless communication module 1 and the main control board 3 is achieved through the same data interface 13, which simplifies the wiring inside the display device. For example, the main control board 3 can be equipped with a wireless communication interface 401 adapted to the data interface 13 in the wireless communication module 1. Electrical connection between the wireless communication module 1 and the main control board 3 is achieved by inserting the plugs at both ends of the data cable 40 into the data interface 13 on the circuit board 10 of the wireless communication module 1 and the wireless communication interface 401 on the main control board 3. For example, the data interface 13 can be a USB interface with a pluggable design, facilitating the installation and use of the wireless communication module 1.

[0109] For example, the main control board 3 may include a main control chip, a wireless communication interface, a display interface, a power module, a High Definition Multimedia Interface (HDMI) module, a button module, an Ethernet module, a storage module, a sensor module, and a video signal detection module 480, etc. For example, the main control chip can be a System-on-a-Chip (SoC). Figure 10 A system architecture diagram of a display device according to some embodiments of this disclosure is shown, such as... Figure 10 As shown, the display interface 402, wireless communication interface 401, HDMI module 430, button module 440, Ethernet module 450, storage module 460, sensor module 470, and video signal detection module 480 are electrically connected to the main control chip 410. The power supply module 420 can supply power to the main control chip 410, display module 2, display interface 402, wireless communication interface 401, wireless communication module 1, HDMI module 430, button module 440, Ethernet module 450, storage module 460, sensor module 470, and video signal detection module 480.

[0110] In some embodiments, the side frame of the display device is provided with a second receiving space, in which the wireless communication module 1 can be disposed. For example, the second receiving space can be located on the side frame at the bottom of the display device. Figure 11 The present disclosure shows a schematic diagram of the structure of a display device according to some embodiments, such as... Figure 11 As shown, the side frame 510 at the bottom of the display device 100 includes a protruding base box 511, which has a second receiving space for accommodating the aforementioned wireless communication module 1. It should be noted that... Figure 11 In the illustrated display device 1000, the side frame 510 at the bottom of the display device 1000 refers to the side frame 510 near the bracket 520. By placing the wireless communication module 1 in the reserved bottom box 511, it is beneficial to reduce the impact of the back panel of the display module 2 on the radiation characteristics of the antenna and ensure signal transmission strength.

[0111] For example, the display device can be a large-size display device, such as an all-in-one conference machine or a television set. Of course, the display devices provided in the embodiments of this disclosure are not limited to the types listed above.

[0112] It should be noted that the accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments of this disclosure; other structures can be referred to with conventional designs. Where there is no conflict, the embodiments of this disclosure and the features described therein can be combined with each other to obtain new embodiments.

[0113] Although some embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

Claims

1. A wireless communication module, characterized by The application relates to a wireless communication module. The wireless communication module comprises a circuit board, a data interface and at least two wireless communication circuits electrically connected to the data interface. The antenna comprises a radiator, a feeding point and a grounding point electrically connected to the radiator, the feeding point is electrically connected to the wireless communication circuit, and the grounding point is electrically connected to a grounding terminal in the circuit board.

2. The wireless communication module of claim 1, wherein, The antenna board further comprises a feeding pad and a grounding pad on the substrate, the feeding pad serves as the feeding point, and the grounding pad serves as the grounding point.

3. The wireless communication module of claim 2, wherein, The wireless communication module further comprises a feeding line, one end of the feeding line is a welding head, the other end is provided with a female seat, the welding head comprises an inner conductor and an outer conductor, the inner conductor is welded to the feeding pad, the outer conductor is welded to the grounding pad, and the female seat is inserted into a male seat arranged on the circuit board. The feeding pad and the grounding pad are located within the projection range of the radiator on the substrate surface.

4. The wireless communication module of claim 3, wherein, The radiator comprises a first radiation section, a second radiation section and a grounding section connected in sequence, one end of the first radiation section is electrically connected to the feeding point, the second radiation section is located between the feeding point and the grounding point, and one end of the grounding section is electrically connected to the grounding point; the grounding section, the first radiation section and the second radiation section respectively comprise a plurality of sub-sections arranged in a bending mode.

5. The wireless communication module of claim 2, wherein, The grounding section comprises a first sub-section, a second sub-section, a third sub-section, a fourth sub-section, a fifth sub-section, a sixth sub-section and a seventh sub-section connected in sequence, the first sub-section, the third sub-section, the fifth sub-section and the seventh sub-section are parallel to a first direction, the second sub-section, the fourth sub-section and the sixth sub-section are parallel to a second direction, and the first direction and the second direction are perpendicular.

6. The wireless communication module of claim 5, wherein, The fifth sub-section is located between the third sub-section and the seventh sub-section, and the sixth sub-section is located between the second sub-section and the fourth sub-section.

7. The wireless communication module of claim 6, wherein, The center lines of the first sub-section and the seventh sub-section are on a straight line.

8. The wireless communication module of claim 6, wherein, An edge line of one end of the seventh sub-section away from the sixth sub-section is a first edge line, an edge line of one side of the fourth sub-section away from the second sub-section is a second edge line, and the first edge line and the second edge line are on a straight line. The length of the seventh sub-section is 7mm-9mm.

9. The wireless communication module of claim 6, wherein, The second radiation section comprises an eighth sub-section, a ninth sub-section and a tenth sub-section connected in sequence, the first radiation section comprises an eleventh sub-section and a twelfth sub-section connected to each other, and one end of the eleventh sub-section away from the twelfth sub-section is connected to the tenth sub-section.

10. The wireless communication module of claim 5, wherein, The eighth sub-section, the tenth sub-section and the twelfth sub-section are adjacent and parallel, the tenth sub-section is located between the eighth sub-section and the twelfth sub-section, and the extension direction of the eighth sub-section is parallel to the first direction; the eleventh sub-section is closer to the grounding section than the ninth sub-section.

11. The wireless communication module of claim 10, wherein, ​ 12. The wireless communication module of claim 11, wherein, An edge line of an end of the twelfth sub-section away from the eleventh sub-section is a third edge line, and an edge line of a side of the ninth sub-section away from the ground section is a fourth edge line, the third edge line and the fourth edge line are on a straight line.

13. The wireless communication module of claim 10, wherein, The length of the twelfth sub-section is 17mm-19mm.

14. The wireless communication module of claim 5, wherein, The gap width between the parallel and adjacent sub-sections of the radiator is 0.5mm-1.5mm, and the width of the radiator is 2mm-3mm.

15. The wireless communication module of claim 1, wherein, The antenna board comprises a conductive layer on one side of the substrate, the conductive layer comprises the plurality of antennas, and other areas of the conductive layer except the plurality of antennas are clear areas.

16. The wireless communication module of any one of claims 1-15, wherein, The at least two wireless communication circuits comprise a first wireless communication circuit and a second wireless communication circuit, The plurality of antennas comprise two groups of antennas, each group of antennas comprises at least one antenna, the two groups of antennas are a first group of antennas and a second group of antennas respectively, each antenna in the first group of antennas is electrically connected with the first wireless communication circuit respectively, and each antenna in the second group of antennas is electrically connected with the second wireless communication circuit respectively.

17. The wireless communication module of claim 16, wherein, The first group of antennas comprises a first antenna, a second antenna and a third antenna, and the second group of antennas comprises a fourth antenna and a fifth antenna. The first antenna is a Bluetooth antenna, and the second antenna, the third antenna, the fourth antenna and the fifth antenna are WiFi antennas.

18. The wireless communication module of claim 17, wherein, The first wireless communication circuit comprises a first wireless processing chip, a first signal transceiving sub-circuit, a second signal transceiving sub-circuit and a third signal transceiving sub-circuit electrically connected with the first wireless processing chip respectively, and the second wireless communication circuit comprises a second wireless processing chip, a fourth signal transceiving sub-circuit and a fifth signal transceiving sub-circuit electrically connected with the second wireless processing chip respectively. The first wireless processing chip and the second wireless processing chip are electrically connected with the data interface. The first signal transceiving sub-circuit is electrically connected with the first antenna, the second signal transceiving sub-circuit is electrically connected with the second antenna, the third signal transceiving sub-circuit is electrically connected with the third antenna, the fourth signal transceiving sub-circuit is electrically connected with the fourth antenna, and the fifth signal transceiving sub-circuit is electrically connected with the fifth antenna.

19. The wireless communication module of claim 18, wherein, The WiFi antenna is a dual-frequency WiFi antenna, the second signal transceiving sub-circuit, the third signal transceiving sub-circuit, the fourth signal transceiving sub-circuit and the fifth signal transceiving sub-circuit are dual-frequency signal transceiving sub-circuits, the dual-frequency signal transceiving sub-circuits comprise a first frequency band signal transceiving sub-circuit, a second frequency band signal transceiving sub-circuit and a diplexer, and the first frequency band signal transceiving sub-circuit and the second frequency band signal transceiving sub-circuit are electrically connected with the same dual-frequency WiFi antenna through the diplexer.

20. A display device, characterized by Comprise: A face frame assembly comprising a side frame and a rear shell; A display module arranged in a first accommodating space formed by the side frame and the rear shell; A main control board arranged between a back plate of the display module and the rear shell and electrically connected with the display module; And The wireless communication module of any one of claims 1-19, wherein a data interface in the wireless communication module is electrically connected to the main control board through a data line.

21. The display device of claim 20, wherein, The side frame is provided with a second accommodating space, and the wireless communication module is arranged in the second accommodating space.

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