Patent Publication Number: US-2022216599-A1

Title: Display and electronic device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/CN2020/091110, filed on May 19, 2020, which claims priority to Chinese Patent Application No. 201910926875.7, filed on Sep. 27, 2019. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. 
    
    
     TECHNICAL FIELD 
     Embodiments of this application relate to the technical field of electronic products, and in particular to a display and an electronic device. 
     BACKGROUND 
     With the continuous development of the information era, electronic devices such as mobile phones, by virtue of their advantages such as being fast and portable, have quickly become important communication tools for people to communicate with each other. As a part for receiving and transmitting signals in a mobile phone, an antenna plays a key role in ensuring communication quality and implementing instant communication. Due to an increasing screen-to-body ratio, insufficient antenna clearance is apt to occur in a traditional layout of the antenna, resulting in poor antenna performance. 
     SUMMARY 
     Embodiments of this application provide a display and an electronic device. The display is integrated with antenna elements, and the antenna elements can perform communication in space above the display and have sufficient clearance space during communication, and therefore can obtain good communication quality. 
     According to a first aspect, an embodiment of this application provides a display. The display can be applied to an electronic device. The display has a plurality of pixels arranged in an array, and each pixel includes a light-transmitting region and a light-shielded region. Each light-transmitting region is provided with a plurality of micro light-emitting diodes. The display includes a plurality of antenna elements, and the plurality of antenna elements are arranged in light-shielded regions of the plurality of pixels. 
     In an embodiment, the display is integrated with at least one antenna by disposing the plurality of antenna elements in the plurality of pixels, and the antenna elements can perform communication in space above the display and have sufficient clearance space during communication. Therefore, the antenna of the electronic device has good communication quality. In addition, because the antenna in the display can effectively enhance and improve electromagnetic wave radiation and reception in a thickness direction of the electronic device, a probability of death grip of the electronic device can be effectively reduced, and user experience can be effectively improved. Moreover, the display integrates a display function and an antenna communication function, and therefore has a high integration degree and helps the electronic device become smaller, lighter, and thinner. 
     With reference to the first aspect, in a first possible embodiment, the display further includes a radio frequency front-end circuit, and the radio frequency front-end circuit is arranged in the light-shielded regions. One antenna is connected to one radio frequency front-end circuit, or a plurality of antennas are connected to a same radio frequency front-end circuit. Each antenna includes one or more antenna elements. The radio frequency front-end circuit includes an active component. The radio frequency front-end circuit includes some or all parts of a radio frequency front-end module of an antenna module of the electronic device. In other words, the radio frequency front-end circuit is the radio frequency front-end module or a portion of the radio frequency front-end module. 
     In an embodiment, the display is integrated with the radio frequency front-end circuit, the radio frequency front-end circuit is the radio frequency front-end module of the electronic device or a portion of the radio frequency front-end module, and therefore a transmission distance of a radio frequency signal of the electronic device between the antenna and the radio frequency front-end module is very short. As a result, a loss of the antenna can be reduced and efficiency of the antenna can be improved. 
     In addition, a manner in which the radio frequency front-end circuit drives the antenna may be: one radio frequency front-end circuit drives one antenna, or one radio frequency front-end circuit drives a plurality of antennas. In a solution in which one radio frequency front-end circuit drives one antenna, a control circuit of the radio frequency front-end circuit is relatively simple and easy to implement. In a solution in which one radio frequency front-end circuit drives a plurality of antennas, there are fewer radio frequency front-end circuits, and therefore costs of the display can be reduced. In addition, the fewer radio frequency front-end circuits occupy less space of the light-shielded regions of the plurality of pixels, and space released can be used for cabling or the antenna elements of the display, so that the design scheme of the display can be more flexible. 
     In addition, the antenna may have different structures through a combination of one or more antenna elements, thereby meeting different antenna communication requirements. 
     With reference to the first possible embodiment of the first aspect, in a second possible embodiment, the radio frequency front-end circuit includes a duplexer, a transmit switch, a receive switch, and a switch controller. The duplexer is connected to one or more antennas, and the duplexer is configured to isolate a transmit signal from a receive signal. The transmit switch and the receive switch are located in different branches and are both connected to the duplexer, the transmit switch is configured to transmit the transmit signal when turned on, and the receive switch is configured to transmit the receive signal when turned on. The switch controller is connected to the transmit switch and the receive switch, and the switch controller is configured to control the transmit switch and the receive switch under the driving of an external signal. 
     In an embodiment, the radio frequency front-end circuit can isolate the transmit signal from the receive signal through a component such as the duplexer, so as to improve sensitivity, a gain, and the like of the antenna. 
     With reference to the second possible embodiment of the first aspect, in a third possible embodiment, when a plurality of antennas are connected to a same radio frequency front-end circuit, the radio frequency front-end circuit further includes an antenna switch, the antenna switch is connected between the plurality of antennas and the duplexer, and the antenna switch is configured to control on or off of each antenna. The switch controller is further connected to the antenna switch, and the switch controller is further configured to control the antenna switch under the driving of an external signal. 
     In an embodiment, the radio frequency front-end circuit can control a gating status of a plurality of antennas in an antenna array through the antenna switch, so that communication performance of the antenna array meets requirements. 
     With reference to any one of the first possible embodiment of the first aspect to the third possible embodiment of the first aspect, in a fourth possible embodiment, the display includes a drive circuit layer, a connection layer, and a component layer that are stacked in sequence. The drive circuit layer includes an antenna data line, and the antenna data line is located in the light-shielded regions of the plurality of pixels. The connection layer includes the antenna elements and a third-type pad connected to the antenna data line. The component layer includes the radio frequency front-end circuit, and the radio frequency front-end circuit is connected to the antenna elements and the third-type pad. 
     In an embodiment, layer positions of the antenna data line, the antenna elements, and the radio frequency front-end circuit are arranged properly on the display to meet connection requirements of these parts, and fully utilize internal space of the display, thereby avoid an increase in a quantity of layers of the display. This helps the display become lighter and thinner. 
     In an embodiment, a thickness of an antenna element is greater than that of the third-type pad. In this case, the antenna element is relatively thick, to meet transmission and reception performance requirements of the antenna, increase bandwidth of the antenna, and reduce thermal resistance of the antenna. The antenna element can be formed through a sputtering or evaporation process. 
     With reference to the fourth possible embodiment of the first aspect, in a fifth possible embodiment, the drive circuit layer further includes a display data line, and the display data line is located in the light-shielded regions of the plurality of pixels. The connection layer further includes a second-type pad connected to the display data line. The component layer further includes the micro light-emitting diode and a pixel driving circuit, and the pixel driving circuit is connected to the second-type pad and the micro light-emitting diode. 
     In an embodiment, the pixel driving circuit and the radio frequency front-end circuit are arranged at a same layer. The radio frequency front-end circuit and the pixel driving circuit share a portion of thickness space of the display, thereby helping reduce a thickness of the display. Both the radio frequency front-end circuit and the pixel driving circuit may be assembled to the display through a surface-mount technology. 
     In an embodiment, each pixel driving circuit is connected to a plurality of micro light-emitting diodes in one or more pixels. A manner in which the pixel driving circuit drives a pixel may be: one pixel driving circuit drives one pixel, or one pixel driving circuit drives a plurality of pixels. In the solution in which one pixel driving circuit drives one pixel, a control circuit of the pixel driving circuit is relatively simple, and therefore the pixel driving circuit features a relatively easy manufacturing process and low costs. In a solution in which one pixel driving circuit drives a plurality of pixels, there are fewer pixel driving circuits, and therefore the costs of the display can be reduced. In addition, the fewer pixel driving circuits occupy less space of the light-shielded regions of the plurality of pixels, and space released can be used for cabling or the antenna elements of the display, so that the design scheme of the display can be more flexible. 
     In an embodiment, the drive circuit layer further includes a power line. The connection layer further includes a first-type pad connected to the power line. The micro light-emitting diodes are connected to the first-type pad. The pixel driving circuit is connected to the first-type pad. The radio frequency front-end circuit is connected to the first-type pad. 
     In an embodiment, the display further includes a substrate. The substrate is located on a side of the drive circuit layer away from the connection layer. The substrate may be made of a material such as polyimide (PI) or silicon. 
     In an embodiment, the display further includes an insulation layer. The insulation layer is located between the drive circuit layer and the connection layer. A plurality of via hole structures are provided in the insulation layer, to implement connection between the drive circuit layer, and the first-type pad, the second-type pad, and the third-type pad. The insulation layer can be made of silicon nitride or an organic material. The organic material includes but is not limited to a polyacrylate material. 
     In an embodiment, the display further includes a package layer. The package layer is located on a side of the component layer away from the connection layer. The package layer is configured to ward off vapor and oxygen to protect an internal structure of the display. 
     In an embodiment, the display may further include a flat layer. The flat layer is located between the component layer and the package layer. The flat layer covers the component layer to form a flat surface on a side away from the component layer, so that a manufacturing or assembly process of a subsequent film layer is less difficult. The flat layer is made of an insulating material. 
     In an embodiment, the display may further include an optical film layer. The optical film layer is located between the flat layer and the package layer. The optical film layer is configured to improve and optimize optical characteristics of the display. 
     With reference to the fifth possible embodiment of the first aspect, in a sixth possible embodiment, the connection layer further includes a first lead and a second lead, the pixel driving circuit and the micro light-emitting diode are connected through the first lead, and the radio frequency front-end circuit and the antenna elements are connected through the second lead. 
     In an embodiment, the first lead and the second lead are disposed at the connection layer on the display, the first lead may directly connect the pixel driving circuit and the micro light-emitting diodes, and the second lead may directly connect the radio frequency front-end circuit and the antenna elements. Therefore, there is no need to provide an additional via hole structure at the insulation layer. As a result, the structure of the display is simplified, and the costs of the display lower are reduced. 
     With reference to any one of the first possible embodiment of the first aspect to the third possible embodiment of the first aspect, in a seventh possible embodiment, the display includes at least one antenna array, and each antenna array includes a plurality of antennas. When the plurality of antennas are connected to a same radio frequency front-end circuit, the plurality of antennas connected to the same radio frequency front-end circuit are located in a same antenna array. 
     In an embodiment, a surface area of the display is relatively large, and therefore the at least one antenna array is integrated into the display, to fully utilize the space above the display for communication. The antenna array includes the plurality of antennas, and the antenna array may form a multiple-input multiple-output system, thereby increasing a channel capacity and improving communication quality of the antenna. 
     In addition, each radio frequency front-end circuit drives one antenna array, and when there are a plurality of antenna arrays, the plurality of antenna arrays can be independently controlled by different radio frequency front-end circuits, so that the plurality of antenna arrays are free to work independently or jointly. This makes the design scheme of the antenna of the electronic device more diversified. Because the plurality of antennas in the antenna array are connected to the same radio frequency front-end circuit, the radio frequency front-end circuit gates one or more antennas in the antenna array and turns off remaining antennas, so that communication performance of the antenna array meets requirements. 
     In an embodiment, the antenna may be a dipole antenna. The antenna includes two symmetrically arranged antenna elements; or the antenna includes two symmetrically arranged antenna element groups, and each antenna element group includes a plurality of antenna elements. 
     In an embodiment, when the antenna includes two symmetrically arranged antenna elements, a structure of the antenna is relatively simple and easy to implement. When the antenna includes two symmetrically arranged antenna element groups, a plurality of antenna elements in a same antenna element group perform signal transmission and reception together, so that the antenna can meet transmission and reception requirements for a larger channel capacity. In other embodiments, the antenna may alternatively be a monopole antenna, an F antenna, or the like. 
     With reference to any one of the first aspect, or the first possible embodiment of the first aspect to the third possible embodiment of the first aspect, in an eighth possible embodiment, a single antenna element is arranged in a light-shielded region of one pixel, or a single antenna element is contiguously arranged in light-shielded regions of at least two adjacent pixels. 
     When a single element is arranged in a light-shielded region of one pixel, the antenna element that can be arranged in the light-shielded region of the one pixel has a small volume, and therefore the antenna element can be more easily arranged in the display, so as to reduce design difficulty of the display. In addition, due to the small volume of the antenna element, a larger quantity of antenna elements can be arranged in the display, so that one or more antenna elements can form more antennas of diverse types, and antenna design schemes of the electronic device are more abundant. 
     When a single antenna element is contiguously arranged in light-shielded regions of at least two adjacent pixels, because the single antenna element can be arranged in space of the light-shielded regions of the at least two pixels, a size and a shape of the antenna element are less limited by a size and a shape of the light-shielded region of the pixel. The size and the shape of the antenna element may be set in a larger region according to communication requirements of the antenna, so that the design of the antenna is more diversified and flexible. 
     In an embodiment, the antenna element may be linear, L-shaped, inverted L-shaped, or the like. 
     According to a second aspect, an embodiment of this application further provides an electronic device, including a housing and the display described above, and the display is mounted to the housing. In an embodiment, the display of the electronic device is integrated with an antenna having a communication function, and the antenna does not need to occupy additional space of the electronic device. Therefore, this helps the electronic device become smaller, lighter, and thinner. In addition, the antenna can perform communication directly in space above the display, and the antenna has sufficient clearance space during communication, thereby improving communication quality of the electronic device. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       To describe the technical solutions in the embodiments of this application or in the background, the following briefly describes the accompanying drawings for describing the embodiments of this application or the background. 
         FIG. 1  is a schematic structural diagram of an electronic device according to an embodiment of this application; 
         FIG. 2  is a schematic block diagram of an antenna module of the electronic device shown in  FIG. 1 ; 
         FIG. 3  is a front view of a display of the electronic device shown in  FIG. 1 ; 
         FIG. 4  is a schematic diagram of a partial structure of the display shown in  FIG. 3  in an embodiment; 
         FIG. 5  is a schematic diagram of a partial structure of the display shown in  FIG. 3  in another embodiment; 
         FIG. 6  is a schematic diagram of a partial structure of the display shown in  FIG. 3  in still another embodiment; 
         FIG. 7  is a schematic diagram of a partial structure of the display shown in  FIG. 3  in still another embodiment; 
         FIG. 8  is a schematic diagram of a partial structure of the display shown in  FIG. 3  in still another embodiment; 
         FIG. 9  is a schematic diagram of an internal structure of the display shown in  FIG. 3 ; 
         FIG. 10  is a schematic diagram of some circuits of the display shown in  FIG. 3 ; 
         FIG. 11  is a schematic structural diagram of the display shown in  FIG. 3  in an example embodiment; 
         FIG. 12  is a schematic diagram of connection between an antenna array and a radio frequency front-end circuit of the display shown in  FIG. 11  in an embodiment; 
         FIG. 13  is a schematic structural diagram of an antenna shown in  FIG. 12 ; 
         FIG. 14  is a schematic block diagram of the radio frequency front-end circuit shown in  FIG. 12  in an embodiment; 
         FIG. 15  is a schematic block diagram of the radio frequency front-end circuit shown in  FIG. 12  in another embodiment; 
         FIG. 16  is a schematic diagram of connection between an antenna array and a radio frequency front-end circuit of the display shown in  FIG. 11  in another embodiment; 
         FIG. 17  is a schematic block diagram of the radio frequency front-end circuit shown in  FIG. 16  in an embodiment; and 
         FIG. 18  is a schematic block diagram of the radio frequency front-end circuit shown in  FIG. 16  in another embodiment. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     The following describes the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. 
     Referring to  FIG. 1 ,  FIG. 1  is a schematic structural diagram of an electronic device  100  according to an embodiment of this application. The electronic device  100  may be a device such as a mobile phone, a tablet computer, an e-reader, a notebook computer, a vehicle-mounted device, a wearable device, or a television. In description of the embodiments of this application, the electronic device  100  is, for example, a mobile phone. 
     The electronic device  100  includes a display  1 , a housing  2 , a circuit board  3 , a processor  4 , a memory  5 , and a battery  6 . The display  1  is configured to display an image, a video, and the like. The display  1  is mounted to the housing  2 . The display  1  and the housing  2  jointly enclose an inner cavity of the electronic device  100 . The circuit board  3 , the processor  4 , and the battery  6  are accommodated in the inner cavity. The processor  4  and the memory  5  are secured to the circuit board  3 . The memory  5  is configured to store computer program code. The computer program code includes a computer instruction. The processor  4  is configured to invoke the computer instruction to enable the electronic device  100  to perform a corresponding operation. The battery  6  is configured to supply power to an electrical part of the electronic device  100 . 
     The electronic device  100  may further include modules such as a camera module, a facial recognition module, a fingerprint recognition module, a sensor module, a motor, a microphone module, and a speaker module that are accommodated in the inner cavity. The display  1  and the modules such as the camera module, the facial recognition module, the fingerprint recognition module, the sensor module, the motor, the microphone module, and the speaker module are all electrically connected to the processor  4 . The camera module is configured to perform shooting. The facial recognition module is configured to collect a facial image of a user. The fingerprint recognition module is configured to collect a fingerprint image of a user. The sensor module may include one or more of a pressure sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, an optical proximity sensor, a fingerprint sensor, a temperature sensor, a touch sensor, and an ambient light sensor. The motor can generate a vibration prompt. The motor can be used for an incoming call vibration prompt, and can also be used for touch vibration feedback. The microphone module is configured to convert a sound signal into an electrical signal. The speaker module is configured to convert an electrical signal into a sound signal. 
     Referring to  FIG. 2 ,  FIG. 2  is a schematic block diagram of an antenna module  7  of the electronic device  100  shown in  FIG. 1 . In  FIG. 2 , a dashed arrow represents a signal transmission path, and a solid arrow represents a signal reception path. 
     The electronic device  100  further includes the antenna module  7 . The antenna module  7  includes a modem  71 , a radio frequency transceiver  72 , a radio frequency front-end module  73 , and an antenna  74  that are connected in sequence. A block corresponding to the reference numeral  7  in  FIG. 1  is only used to indicate that the electronic device  100  includes the antenna module  7 , and does not limit an arrangement position, an implementation structure, and the like of the antenna module  7 . 
     The modem  71  includes a modulator and a demodulator. The modulator is configured to modulate a to-be-transmitted low-frequency baseband signal into a medium- and high-frequency signal. The demodulator is configured to demodulate a received medium- and high-frequency signal into a low-frequency baseband signal. The radio frequency transceiver  72  is configured to convert a medium- and high-frequency signal into a to-be-transmitted radio frequency signal, and convert a received radio frequency signal into a medium- and high-frequency signal. 
     The radio frequency front-end module  73  may mainly include a power amplifier  731 , a first filter  732 , a low noise amplifier  733 , a second filter  734 , a duplexer  735 , and the like. The power amplifier  731  is configured to amplify a transmit signal. The transmit signal is a radio frequency signal and is transmitted in the transmission path. The first filter  732  is configured to retain a signal within a frequency band in the transmit signal, and filter out a signal outside the frequency band. The low noise amplifier  733  is configured to amplify a receive signal. The receive signal is a radio frequency signal and is transmitted in the reception path. The second filter  734  is configured to retain a signal within a frequency band in the receive signal, and filter out a signal outside the frequency band. The duplexer  735  is configured to isolate the transmit signal from the receive signal. The antenna  74  is configured to convert the transmit signal into an electromagnetic wave signal and send the electromagnetic wave signal out, and is further configured to receive an electromagnetic wave signal and convert the electromagnetic wave signal into the receive signal. 
     There may be one or more antennas  74 . A single antenna  74  may be configured to cover one or more communication frequency bands. For example, the antenna  74  in an embodiment of the application may operate in a Wi-Fi frequency band, a 5G millimeter wave frequency band, and the like. Different antennas  74  may also be reused to improve utilization of the antennas  74 . For example, a type of the antenna  74  may be a monopole antenna, a dipole antenna, or an F antenna. The type of the antenna  74  is not strictly limited in this application. 
     In an embodiment of the application, the display  1  is a micro light-emitting diode (μLED) display. In the electronic device  100 , the antenna  74  of the antenna module  7  is integrated into the display  1 , so that the antenna  74  can perform communication in space above the display  1  and has sufficient clearance space during communication, to obtain good communication quality. 
     Referring to  FIG. 3 ,  FIG. 3  is a front view of the display  1  of the electronic device  100  shown in  FIG. 1 . 
     The display  1  has a plurality of pixels  11  arranged in an array. The display  1  includes a window area and a cabling region, and the cabling region is located at the periphery of the window area. When the display  1  is in operation, the window area is used to display an image. The plurality of pixels  11  are arranged in the window area. A quantity of pixels  11  is related to resolution of the display  1 . For example, pixels per inch (PPI) of the display  1  may be less than 1000. Each pixel  11  includes a light-transmitting region  111  and a light-shielded region  112 . When the display  1  is in operation, light-transmitting regions  111  of the pixels  11  are used to emit light, and the light emitted by the plurality of pixels  11  together forms a displayed image in the window area; light-shielded regions  112  of the pixels  11  are used to block light, and the light-shielded regions  112  may be used for cabling, components, and the like of the display  1  that need to be shielded. 
     Referring to  FIG. 4 ,  FIG. 4  is a schematic diagram of a partial structure of the display  1  shown in  FIG. 3  in an embodiment.  FIG. 4  illustrates some pixels  11  in the plurality of pixels  11  of the display  1 . 
     Each light-transmitting region  111  of the display  1  is provided with a plurality of micro light-emitting diodes (μLED)  12 . A size of the micro light-emitting diode  12  is below 100 micrometers (μm). A plurality of micro light-emitting diodes  12  in a single light-transmitting region  111  may include micro light-emitting diodes of different colors, such as a red micro light-emitting diode, a green micro light-emitting diode, and a blue micro light-emitting diode. In an example, there may be one micro light-emitting diode of one color in a single light-transmitting region  111 , so that the display  1  has a simple structure and low costs. In another example, there may be a plurality of micro light-emitting diodes of a same color in a single light-transmitting region  111 . The plurality of micro light-emitting diodes of the same color may serve as a backup of each other. When one of the micro light-emitting diodes fails, remaining micro light-emitting diodes can function properly, so that displaying of the display  1  is negligibly affected, and the display  1  has a longer service life. 
     The display  1  includes a plurality of antenna elements  741 . The plurality of antenna elements  741  are arranged in light-shielded regions  112  of the plurality of pixels  11 . One or more antenna elements  741  can constitute one antenna  74 . In an embodiment, light-shielded regions  112  of some pixels  11  in the plurality of pixels  11  of the display  1  are arranged with antenna elements  741 , while light-shielded regions  112  of other pixels  11  are not arranged with antenna elements  741 . Light-shielded regions  112  of pixels  11  illustrated in  FIG. 4  are arranged with antenna elements  741 . 
     In an embodiment, the display  1  is integrated with at least one antenna  74  by disposing the plurality of antenna elements  741  in the plurality of pixels  11 , and the antenna elements  741  can perform communication in space above the display  1  and have sufficient clearance space during communication. Therefore, the antenna  74  of the electronic device  100  has good communication quality. In addition, because the antenna  74  in the display  1  can effectively enhance and improve electromagnetic wave radiation and reception in a thickness direction (a direction perpendicular to the display  1 ) of the electronic device  100 , a probability of death grip of the electronic device  100  can be effectively reduced, and user experience can be effectively improved. Moreover, the display  1  integrates a display function and an antenna communication function, and therefore has a high integration degree and helps the electronic device  100  become smaller, lighter, and thinner. 
     In an embodiment, as shown in  FIG. 4 , a single antenna element  741  is arranged in a light-shielded region  112  of one pixel  11 . The plurality of antenna elements  741  are respectively arranged in light-shielded regions  112  of a plurality of different pixels  11 . The plurality of antenna elements  741  can be arranged in an array. 
     In an embodiment, the antenna element  741  that can be arranged in the light-shielded region  112  of the one pixel  11  has a small volume, and therefore the antenna element  741  can be more easily arranged in the display  1 , so as to reduce design difficulty of the display  1 . In addition, due to the small volume of the antenna element  741 , a larger quantity of antenna elements  741  can be arranged in the display  1 , so that one or more antenna elements  741  can form more antennas  74  of diverse types, and antenna design schemes of the electronic device  100  are more abundant. 
     In an embodiment, as shown in  FIG. 4 , the antenna element  741  is straight-lined in an example. In other examples, the antenna element  741  may also be L-shaped, inverted L-shaped, or in other shapes. This is not strictly limited in this application. 
     In an embodiment, as shown in  FIG. 4 , the display  1  further includes a plurality of pixel driving circuits  13 . The plurality of pixel driving circuits  13  are arranged in the light-shielded regions  112  of the plurality of pixels  11 . Each pixel driving circuit  13  is connected to a plurality of micro light-emitting diodes  12  in one pixel  11 . In other words, one pixel driving circuit  13  drives one pixel  11 . Each pixel  11  includes the plurality of micro light-emitting diodes  12  arranged in the light-transmitting region  111  and a pixel driving circuit  13  arranged in the light-shielded region  112 . The pixel driving circuit  13  is configured to control the plurality of micro light-emitting diodes  12 . In this case, a control circuit of the pixel driving circuit  13  is relatively simple, and therefore the pixel driving circuit  13  features a relatively easy manufacturing process and low costs. For example, the pixel driving circuit  13  may be a chip structure. 
     Referring to  FIG. 5 ,  FIG. 5  is a schematic diagram of a partial structure of the display  1  shown in  FIG. 3  in another embodiment.  FIG. 5  illustrates some pixels  11  in the plurality of pixels  11  of the display  1 . The following mainly describes differences between the display  1  shown in  FIG. 5  and the display  1  shown in  FIG. 4 , and most of the same technical content thereof is not repeated. 
     A single antenna element  741  is contiguously arranged in light-shielded regions  112  of at least two adjacent pixels  11 . For example, as shown in  FIG. 5 , a single antenna element  741  is contiguously arranged in light-shielded regions  112  of four adjacent pixels  11 . In other examples, a single antenna element  741  may also be arranged in light-shielded regions  112  of another quantity of pixels  11 . For example, as shown in  FIG. 5 , the antenna element  741  is straight-lined. In other examples, the antenna element  741  may also be L-shaped, inverted L-shaped, or in other shapes. 
     In an embodiment, the single antenna element  741  can be arranged in space of the light-shielded regions  112  of the at least two pixels  11 . Therefore, compared with the foregoing embodiment, a size and a shape of the antenna element  741  are less limited by a size and a shape of the light-shielded region  112  of the pixel  11 . The size and the shape of the antenna element  741  may be set in a larger region according to communication requirements of the antenna  74 , so that an embodiment of the antenna  74  is more diversified and flexible. 
     In an embodiment, each pixel driving circuit  13  of the display  1  is connected to a plurality of micro light-emitting diodes  12  in a plurality of pixels  11 . For example, as shown in  FIG. 5 , each pixel driving circuit  13  is connected to a plurality of micro light-emitting diodes  12  in two pixels  11 . In other examples, each pixel driving circuit  13  may also be connected to a plurality of micro light-emitting diodes  12  of another quantity of pixels  11  (for example, four, eight, or sixteen pixels). 
     In an embodiment, one pixel driving circuit  13  drives a plurality of pixels. Compared with the foregoing embodiment, there are fewer pixel driving circuits  13 , and therefore the costs of the display  1  can be reduced. In addition, the fewer pixel driving circuits  13  occupy less space of the light-shielded regions  112  of the plurality of pixels  11 , and space released can be used for cabling or the antenna elements  741  of the display  1 , so that the design scheme of the display  1  can be more flexible. 
     Referring to  FIG. 6 ,  FIG. 6  is a schematic diagram of a partial structure of the display  1  shown in  FIG. 3  in still another embodiment.  FIG. 6  illustrates some pixels  11  in the plurality of pixels  11  of the display  1 . The following mainly describes differences between the display  1  shown in  FIG. 6  and the display  1  in the foregoing embodiments, and most of the same technical content thereof is not repeated. 
     In the embodiments shown in  FIG. 4  and  FIG. 5 , one antenna element  741  constitutes the antenna  74 . In an embodiment, a plurality of antenna elements  741  constitute the antenna  74 . As shown in  FIG. 6 , the antenna  74  includes the plurality of antenna elements  741 . Each antenna element  741  extends in a first direction, and the plurality of antenna elements  741  are arranged at equal or unequal spacing in a second direction, where the second direction is perpendicular to the first direction. 
     In an example, as shown in  FIG. 6 , the antenna  74  further includes a connecting member  742 , the connecting member  742  is arranged at a same layer as the plurality of antenna elements  741 , and the connecting member  742  connects the plurality of antenna elements  741 . For example, the connecting member  742  extends along the second direction and connects the plurality of antenna elements  741 . A feedpoint of the antenna  74  may be disposed on the connecting member  742 . The connecting member  742  and the plurality of antenna elements  741  may be integrally formed, to simplify a manufacturing process of the display  1 . 
     In another example, the connecting member  742  may be distributed as a conducting wire in other layer structures of the display  1 , and the connecting member  742  is connected to the plurality of antenna elements  741  through a plurality of via hole structures. 
     It can be understood that, if there are a relatively large quantity of antenna elements  741  in the antenna  74  arranged sparsely, and a long connecting member  742  needs to be provided, a phase compensation scheme needs to be considered, to improve and optimize radiation efficiency of the antenna elements  741 . However, when there are a relatively small quantity of antenna elements  741  arranged densely, the connecting member  742  is short and a transmission distance of a radio frequency signal is short, and therefore a phase compensation embodiment may not be considered. 
     It can be understood that, in the foregoing embodiments, the display  1  includes the plurality of antenna elements  741 . In other embodiments, the display  1  may alternatively include one antenna element  741 . In this case, the antenna element  741  constitutes the antenna  74 . 
     Referring to  FIG. 7 ,  FIG. 7  is a schematic diagram of a partial structure of the display  1  shown in  FIG. 3  in still another embodiment.  FIG. 7  illustrates some pixels  11  in the plurality of pixels  11  of the display  1 . The following mainly describes differences between the display  1  shown in  FIG. 7  and the display  1  in the foregoing embodiments, and most of the same technical content thereof is not repeated. 
     In an embodiment, some components of the radio frequency front-end module  73  (refer to  FIG. 2 ) of the antenna module  7  are further integrated into the display  1  on the electronic device  100 . As shown in  FIG. 7 , the display  1  further includes a radio frequency front-end circuit  730 . The radio frequency front-end circuit  730  is arranged in the light-shielded regions  112 . One antenna  74  is connected to one radio frequency front-end circuit  730 . In this case, one radio frequency front-end circuit  730  drives one antenna  74 , and a quantity of radio frequency front-end circuits  730  is the same as that of antennas  74 , so that a control circuit of the radio frequency front-end circuit  730  is relatively simple and easy to implement. The radio frequency front-end circuit  730  includes an active component. The radio frequency front-end circuit  730  includes some or all parts of the radio frequency front-end module  73  of the antenna module  7  of the electronic device  100 . In other words, the radio frequency front-end circuit  730  is the radio frequency front-end module  73  or a portion of the radio frequency front-end module  73 . For example, the radio frequency front-end circuit  730  may be of a chip structure. 
     In an embodiment, the display  1  is integrated with the radio frequency front-end circuit  730 , the radio frequency front-end circuit  730  is the radio frequency front-end module  73  or a portion of the radio frequency front-end module  73 , and therefore a transmission distance of a radio frequency signal of the electronic device  100  between the antenna  74  and the radio frequency front-end module  73  is very short. As a result, a loss of the antenna  74  can be reduced and efficiency of the antenna  74  can be improved. 
     Referring to  FIG. 8 ,  FIG. 8  is a schematic diagram of a partial structure of the display  1  shown in  FIG. 3  in still another embodiment.  FIG. 8  illustrates some pixels  11  in the plurality of pixels  11  of the display  1 . The following mainly describes differences between the display  1  shown in  FIG. 8  and the display  1  in the foregoing embodiments, and most of the same technical content thereof is not repeated. 
     A plurality of antennas  74  are connected to a same radio frequency front-end circuit  730 . In an embodiment, one radio frequency front-end circuit  730  drives a plurality of antennas  74 . Compared with the foregoing embodiment, there are fewer radio frequency front-end circuits  730 , and therefore the costs of the display  1  can be reduced. In addition, the fewer radio frequency front-end circuits  730  occupy less space of the light-shielded regions  112  of the plurality of pixels  11 , and space released can be used for cabling or the antenna elements  741  of the display  1 , so that the design scheme of the display  1  can be more flexible. 
     In an embodiment, the radio frequency front-end circuit  730  may be arranged at a same layer as the pixel driving circuit  13 . Both the radio frequency front-end circuit  730  and the pixel driving circuit  13  may be assembled to the display  1  through a surface-mount technology. In this case, the radio frequency front-end circuit  730  and the pixel driving circuit  13  share a portion of thickness space of the display  1 , thereby helping reduce a thickness of the display  1 . 
     Referring to  FIG. 9  and  FIG. 10  together,  FIG. 9  is a schematic diagram of an internal structure of the display  1  shown in  FIG. 3 , and  FIG. 10  is a schematic diagram of some circuits of the display  1  shown in  FIG. 3 .  FIG. 9  is mainly used to reflect a relative positional relationship between a plurality of parts located at different layers of the display  1 , and a positional relationship between a plurality of parts located at a same layer may be the same as or different from  FIG. 9 .  FIG. 10  is mainly used to reflect a connection relationship between different parts of the display  1 , and a quantitative relationship (for example, one-to-one or one-to-many) of the different parts during connection may be the same as or different from  FIG. 10 . 
     The display  1  includes a substrate  14 , a drive circuit layer  15 , an insulation layer  16 , a connection layer  17 , a component layer  18 , and a package layer  19  that are stacked in sequence. The substrate  14  may be made of a material such as polyimide (PI) or silicon. The insulation layer  16  can be made of silicon nitride or an organic material. The organic material includes but is not limited to a polyacrylate material. The package layer  19  is configured to ward off vapor and oxygen to protect the internal structure of the display  1 . 
     The drive circuit layer  15  includes a power line  151 , a display data line  152 , and an antenna data line  153 . The power line  151 , the display data line  152 , and the antenna data line  153  are located in the light-shielded regions  112  of the plurality of pixels  11 . 
     The connection layer  17  includes a plurality of pads ( 171 ,  172 ,  173 ) and the antenna elements  741 . The plurality of pads ( 171 ,  172 ,  173 ) are located in the light-shielded regions  112  of the plurality of pixels  11 . The plurality of pads ( 171 ,  172 ,  173 ) include a first-type pad  171  connected to the power line  151 , a second-type pad  172  connected to the display data line  152 , and a third-type pad  173  connected to the antenna data line  153 . 
     The component layer  18  includes the micro light-emitting diodes  12 , the pixel driving circuit  13 , and the radio frequency front-end circuit  730 . The micro light-emitting diodes  12  are connected to the first-type pad  171 . The pixel driving circuit  13  is connected to the first-type pad  171  and the second-type pad  172 . The radio frequency front-end circuit  730  is connected to the first-type pad  171  and the third-type pad  173 . In other words, the micro light-emitting diodes  12 , the pixel driving circuit  13 , and the radio frequency front-end circuit  730  each are connected to the power line  151  through the first-type pad  171 . The pixel driving circuit  13  is connected to the display data line  152  through the second-type pad  172 . The radio frequency front-end circuit  730  is connected to the antenna data line  153  through the third-type pad  173 . 
     In an embodiment, through proper layer distribution of the parts of the display  1 , connection requirements can be met, and layers of the display  1  can be reduced. This helps the display  1  become lighter and thinner. 
     In an embodiment, the display  1  further includes a plurality of leads. The pixel driving circuit  13  and the micro light-emitting diodes  12  may be connected through a lead. The radio frequency front-end circuit  730  and the antenna elements  741  may be connected through a lead. 
     In an embodiment, the plurality of leads may be arranged at the drive circuit layer  15 . In this case, the plurality of leads may be located at a layer of the display  1  different from a layer at which the pixel driving circuit  13 , the micro light-emitting diodes  12 , the radio frequency front-end circuit  730 , and the antenna elements  741  are located. The lead connecting the pixel driving circuit  13  and the micro light-emitting diodes  12  is connected to the pixel driving circuit  13  and the micro light-emitting diodes  12  through different via hole structures provided at the insulation layer  16 . The lead connecting the radio frequency front-end circuit  730  and the antenna elements  741  is also connected to the radio frequency front-end circuit  730  and the antenna elements  741  through different via hole structures provided at the insulation layer  16 . 
     In another embodiment, as shown in  FIG. 9 , a plurality of leads may be arranged at the connection layer  17 . In an embodiment, the connection layer  17  further includes a first lead  110   a  and a second lead  110   b . The pixel driving circuit  13  and the micro light-emitting diodes  12  are connected through the first lead  110   a , and the radio frequency front-end circuit  730  and the antenna elements  741  are connected through the second lead  110   b.    
     In an embodiment, the first lead  110   a  and the second lead  110   b  are disposed at the connection layer  17  on the display  1 , the first lead  110   a  may directly connect the pixel driving circuit  13  and the micro light-emitting diodes  12 , and the second lead  110   b  may directly connect the radio frequency front-end circuit  730  and the antenna elements  741 . Therefore, there is no need to provide an additional via hole structure at the insulation layer  16 . As a result, the structure of the display  1  is simplified, and the costs of the display  1  are reduced. 
     In an embodiment, as shown in  FIG. 9 , a thickness of an antenna element  741  is greater than those of the pads ( 171 ,  172 ,  173 ). In this case, the antenna element  741  is relatively thick, to meet transmission and reception performance requirements of the antenna  74 , increase bandwidth of the antenna  74 , and reduce thermal resistance of the antenna  74 . The antenna element  741  may be formed through a sputtering or evaporation process. 
     In an example, the pads ( 171 ,  172 ,  173 ) and the antenna element  741  may be formed in a same manufacturing process, to simplify manufacturing operations of the display  1  and reduce the costs of the display  1 . In another example, the antenna element  741  may be formed in two processes. For example, the pads ( 171 ,  172 ,  173 ) and a portion of the antenna element  741  (a thickness of this part is the same as those of the pads ( 171 ,  172 ,  173 )) are formed in one manufacturing process, and then the other portion of the antenna element  741  is formed in another manufacturing process. In other embodiments, the thickness of the antenna element  741  may alternatively be equal to those of the pads ( 171 ,  172 ,  173 ). 
     In an embodiment, as shown in  FIG. 9 , the display  1  may further include a flat layer  120 . The flat layer  120  is located between the component layer  18  and the package layer  19 . The flat layer  120  covers the component layer  18  to form a flat surface on a side away from the component layer  18 , so that a manufacturing or assembly process of a subsequent film layer is less difficult. The flat layer  120  is made of an insulating material. 
     In an embodiment, as shown in  FIG. 9 , the display  1  may further include an optical film layer  130 . The optical film layer  130  is located between the flat layer  120  and the package layer  19 . The optical film layer  130  is configured to improve and optimize optical characteristics of the display  1 . 
     In other embodiments, the display  1  may not be provided with the pixel driving circuit  13 , and the plurality of micro light-emitting diodes  12  of the plurality of pixels  11  may be directly and independently controlled by the display data line  152  in the display  1 . 
     In an embodiment of the application, a surface area of the display  1  is relatively large, and therefore at least one antenna array is integrated into the display  1  of the electronic device  100 , to fully utilize the space above the display  1  for communication. Examples are used below for description. 
     Referring to  FIG. 11 ,  FIG. 11  is a schematic structural diagram of the display  1  shown in  FIG. 3  in an example embodiment. 
     The display  1  includes at least one antenna array  740 . That the display  1  shown in  FIG. 11  includes a plurality of antenna arrays  740  is used as an example for description. As shown in  FIG. 11 , the display  1  is rectangular. A length L of the display  1  in a length direction Y may be 14.36 cm, and a width W of the display in a width direction X may be 6.464 cm. The display  1  is a 20:9 screen of 6 inches, and pixels per inch of the display  1  may be 508. The display  1  includes four antenna arrays  740 . The four antenna arrays  740  are arranged symmetrically about a first center line  1   a  of the display  1 , and the first center line  1   a  extends along the width direction X in the middle of the display  1 . A distance L 1  between each of two antenna arrays  740  close to the first center line  1   a  and the first center line  1   a  may be 2.0 cm, and a distance L 2  between each of two antenna arrays  740  away from the first center line  1   a  and the first center line  1   a  may be 4.0 cm. 
     The plurality of antenna arrays  740  may work independently or jointly. 
     Referring to  FIG. 12 ,  FIG. 12  is a schematic diagram of connection between the antenna array  740  and the radio frequency front-end circuit  730  of the display  1  shown in  FIG. 11  in an embodiment. 
     Each antenna array  740  includes a plurality of antennas  74 . For example, as shown in  FIG. 12 , the antenna array  740  includes four antennas  74 . The four antennas  74  are arranged along the width direction X of the display  1 . Spacing W 1  between centers of two adjacent antennas  74  may be 1.0 cm. The antenna  74  may be a dipole antenna and includes two antenna units  74   a . A length L 3  and a width W 2  of the antenna unit  74   a  may be 2.0 mm and 0.77 mm, respectively. A distance L 4  between the two antenna units  74   a  may be 1.0 cm. 
     In an embodiment, the antenna array  740  includes the plurality of antennas  74 , and the antenna array  740  may form a multiple-input multiple-output (MIMO) system, thereby increasing a channel capacity and improving communication quality of the antenna. 
     In an embodiment, each antenna array  740  is connected to one radio frequency front-end circuit  730 , and a plurality of antennas  74  in the antenna array  740  are all connected to a same radio frequency front-end circuit  730 . In this case, the one radio frequency front-end circuit  730  drives the plurality of antennas  74 . 
     Each radio frequency front-end circuit  730  drives one antenna array  740 , and when there are a plurality of antenna arrays  740 , the plurality of antenna arrays  740  can be independently controlled by different radio frequency front-end circuits  730 , so that the plurality of antenna arrays  740  are free to work independently or jointly. This makes the design scheme of the antenna of the electronic device  100  more diversified. 
     Referring to  FIG. 13 ,  FIG. 13  is a schematic structural diagram of the antenna  74  shown in  FIG. 12 . 
     In an embodiment, each antenna  74  includes one or more antenna elements  741 . The antenna  74  may have different structures through a combination of one or more antenna elements  741 , thereby meeting different antenna communication requirements. 
     In the embodiment shown in  FIG. 13 , the antenna  74  includes two symmetrically arranged antenna element groups, and each antenna element group includes a plurality of antenna elements  741 . That is, one antenna element group forms one antenna unit  74   a . In this case, a plurality of antenna elements  741  in a same antenna element group perform signal transmission and reception together, so that the antenna  74  meets transmission and reception requirements for a larger channel capacity. A width W 3  of a single antenna element  741  is limited by a size of the light-shielded region  112  of the pixel  11 . Minimum center spacing between two adjacent antenna elements  741  is limited by a size of the pixel  11 . As shown in  FIG. 13 , the width W 3  of the antenna element  741  may be 20 μm, spacing W 4  between centers of the two adjacent antenna elements  741  may be 5 μm, and there may 16 antenna elements  741 . The thickness of the antenna element  741  may be 10 μm, and a thickness direction of the antenna element  741  is perpendicular to the width direction X and the length direction Y. 
     In other embodiments, the antenna  74  includes two symmetrically arranged antenna elements  741 . That is, one antenna element  741  forms one antenna unit  74   a . In other embodiments, the antenna  74  may be a monopole antenna, and the antenna  74  may include one antenna element  741 . 
     Referring to  FIG. 14 ,  FIG. 14  is a schematic block diagram of the radio frequency front-end circuit  730  shown in  FIG. 12  in an embodiment. 
     The radio frequency front-end circuit  730  includes an antenna switch  736 , a duplexer  735 , a transmit switch  737 , a receive switch  738 , and a switch controller  739 . The antenna switch  736  is connected to the plurality of antennas  74  in the antenna array  740 , and is configured to control on or off of each antenna  74 . The duplexer  735  is connected to the antenna switch  736  and is configured to isolate a transmit signal from a receive signal. The transmit switch  737  and the receive switch  738  are located in different branches and are both connected to the duplexer  735 , the transmit switch  737  is configured to transmit the transmit signal when turned on, and the receive switch  738  is configured to transmit the receive signal when turned on. The switch controller  739  is connected to the antenna switch  736 , the transmit switch  737 , and the receive switch  738 . The switch controller  739  is configured to control the antenna switch  736 , the transmit switch  737 , and the receive switch  738  under the driving of an external signal. 
     In an embodiment, the radio frequency front-end circuit  730  is a portion of the radio frequency front-end module  73  in  FIG. 2 , the receive switch  738  is further configured to be connected to the low noise amplifier  733  of the radio frequency front-end module  73  through the antenna data line  153 , the transmit switch  737  is further configured to be connected to the power amplifier  731  of the radio frequency front-end module  73  through the antenna data line  153 , and the switch controller  739  is further configured to be connected to the processor  4  through the antenna data line  153 . The antenna data line  153  can be configured to send a drive signal to the switch controller  739 . A plurality of radio frequency front-end circuits  730  may belong to a plurality of branches of a same radio frequency front-end module  73 , or may belong to a plurality of different radio frequency front-end modules  73 . 
     For example, an embodiment of this application provides a method for controlling the antenna array  740 . 
     S001: The radio frequency transceiver  72  collects induced currents of the plurality of antennas  74  and transmits the induced currents to the modem  71 . The induced currents are generated from electromagnetic waves received by the antennas  74 . 
     S002: The modem  71  converts the induced currents into a digital signal and sends the digital signal to the processor  4 . 
     The switch controller  739  may convert an analog signal (that is, the induced currents) into the digital signal through a digital-to-analog conversion module. 
     S003: The processor  4  calculates a signal-to-noise ratio of each antenna  74  based on the digital signal. 
     S004: The processor  4  uses a target function providing a maximum signal-to-noise ratio of an output signal of the antenna array  740  to generate a control signal and send the control signal to the switch controller  739 . The processor  4  may first calculate signal-to-noise ratios corresponding to all combinations that can be obtained by the plurality of antennas  74  in the antenna array  740 , and then select a combination with a maximum signal-to-noise ratio as a target combination to generate a control signal corresponding to the combination. 
     S005: The switch controller  739  controls on or off of the plurality of antennas  74  in the antenna array  740  through the antenna switch  736  according to the control signal. In this case, the target combination includes one or more antennas  74  in the antenna array  740  that are in a connected state. 
     The method for controlling the antenna array  740  is a real-time adjustment method. For example, the switch controller  739  may perform the method for controlling the antenna array  740  once at time intervals (at the millisecond level). 
     Referring to  FIG. 15 ,  FIG. 15  is a schematic block diagram of the radio frequency front-end circuit  730  shown in  FIG. 12  in another embodiment. This embodiment differs from the embodiment shown in  FIG. 14  mainly in that, the radio frequency front-end circuit  730  further includes the power amplifier  731 , the first filter  732 , the low noise amplifier  733 , and the second filter  734 . The low noise amplifier  733  and the second filter  734  are located in a branch in which the receive switch  738  is located, and the low noise amplifier  733  is connected to the receive switch  738 . The power amplifier  731  and the first filter  732  are located in a branch in which the transmit switch  737  is located, and the power amplifier  731  is connected to the transmit switch  737 . 
     Referring to  FIG. 16 ,  FIG. 16  is a schematic diagram of connection between the antenna array  740  and the radio frequency front-end circuit  730  of the display  1  shown in  FIG. 11  in another embodiment. This embodiment differs from the embodiment shown in  FIG. 12  mainly in that, each antenna  74  is connected to one radio frequency front-end circuit  730 . One radio frequency front-end circuit  730  drives one antenna  74 . As shown in  FIG. 16 , four antennas  74  in the antenna array  740  are respectively connected to four radio frequency front-end circuits  730 . 
     Referring to  FIG. 17 ,  FIG. 17  is a schematic block diagram of the radio frequency front-end circuit  730  shown in  FIG. 16  in an embodiment. 
     The radio frequency front-end circuit  730  includes a duplexer  735 , a transmit switch  737 , a receive switch  738 , and a switch controller  739 . The duplexer  735  is connected to the antenna  74  and is configured to isolate a transmit signal from a receive signal. The transmit switch  737  and the receive switch  738  are located in different branches and are both connected to the duplexer  735 , the transmit switch  737  is configured to transmit the transmit signal when turned on, and the receive switch  738  is configured to transmit the receive signal when turned on. The switch controller  739  is connected to the transmit switch  737  and the receive switch  738 , and the switch controller  739  is configured to control the transmit switch  737  and the receive switch  738  under the driving of an external signal. 
     In an embodiment, the radio frequency front-end circuit  730  is a portion of the radio frequency front-end module  73  in  FIG. 2 , the receive switch  738  is further configured to be connected to the low noise amplifier  733  of the radio frequency front-end module  73  through the antenna data line  153 , the transmit switch  737  is further configured to be connected to the power amplifier  731  of the radio frequency front-end module  73  through the antenna data line  153 , and the switch controller  739  is further configured to be connected to the processor  4  through the antenna data line  153 . 
     Referring to  FIG. 18 ,  FIG. 18  is a schematic block diagram of the radio frequency front-end circuit  730  shown in  FIG. 16  in another embodiment. This embodiment differs from the embodiment shown in  FIG. 17  mainly in that, the radio frequency front-end circuit  730  further includes the power amplifier  731 , the first filter  732 , the low noise amplifier  733 , and the second filter  734 . The low noise amplifier  733  and the second filter  734  are located in a branch in which the receive switch  738  is located, and the low noise amplifier  733  is connected to the receive switch  738 . The power amplifier  731  and the first filter  732  are located in a branch in which the transmit switch  737  is located, and the power amplifier  731  is connected to the transmit switch  737 . 
     It can be understood that the radio frequency front-end circuit  730  in  FIG. 14  and  FIG. 15  may be applied to the display  1  shown in  FIG. 8 . The radio frequency front-end circuit  730  in  FIG. 17  and  FIG. 18  may be applied to the display  1  shown in  FIG. 7 . 
     The foregoing descriptions are merely implementations of this application, but are not intended to limit the protection scope of this application. Any variation or replacement readily figured out by one of ordinary skilled in the art within the technical scope disclosed in this application shall fall within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.