An electronic device

Abstract

This application provides an electronic device. The electronic device includes a back cover, a camera bracket, and an NFC antenna. The camera bracket is disposed on the back cover and includes a first surface and a second surface disposed opposite to each other. The first surface of the camera bracket faces outwards from the electronic device. The camera bracket has a first light-transmitting hole for facing a first flash or a first camera. The NFC antenna is disposed on the first surface of the camera bracket. The first orthographic projection of the NFC antenna onto the first surface of the camera bracket falls within the first surface of the camera bracket and does not overlap with the first light-transmitting hole, so that the NFC antenna avoids the first light-transmitting hole. This application provides a solution that enables the NFC antenna to maintain good radiation performance even in scenarios where the number of cameras is increasing and the camera bracket is becoming larger.

Description

Technical Field

[0001] This application relates to the field of NFC antenna technology, and more particularly to an electronic device. Background Technology

[0002] The current trend in electronic device development is that camera modules are getting larger and the number of cameras is increasing. Consequently, the area occupied by camera brackets on the back cover is also growing.

[0003] Near Field Communication (NFC) antennas come in two forms: one is reused with other antennas, and the other is a standalone NFC antenna. For standalone NFC antennas, there are currently two main placement schemes: one is to wrap around the camera mount, and the other is to place it alongside the camera mount on the back cover of the electronic device. However, as the area occupied by the camera mount on the back cover increases, the first placement scheme makes it impossible to route the NFC antenna's wiring, and the second scheme reduces the placement area for the NFC antenna. Neither placement scheme can guarantee the radiation performance of the NFC antenna. Summary of the Invention

[0004] To address the issue that existing NFC antenna placement schemes cannot guarantee the radiation performance of NFC antennas, this application provides an electronic device that ensures good radiation performance of the NFC antenna even in scenarios where the number of cameras is increasing and the camera brackets are becoming larger.

[0005] This application provides an electronic device. The electronic device includes a back cover, a camera bracket, and an NFC antenna. The camera bracket is disposed on the back cover and includes a first surface and a second surface disposed opposite to each other. The first surface of the camera bracket faces outwards from the electronic device. The camera bracket has a first light-transmitting hole for facing a first flash or a first camera. The NFC antenna is disposed on the first surface of the camera bracket. The first orthographic projection of the NFC antenna onto the first surface of the camera bracket falls within the first surface of the camera bracket and does not overlap with the first light-transmitting hole, so that the NFC antenna avoids the first light-transmitting hole.

[0006] In this embodiment, the first orthographic projection of the NFC antenna onto the first surface of the camera bracket falls within the first surface; that is, the NFC antenna is laid within the first surface. As the number of cameras increases, the camera bracket mounted on the back cover will also increase in size, and the area of ​​the first surface will increase accordingly. Compared to the case where the area of ​​the first surface is smaller, in this embodiment, even at the same relative position within the first surface, the area enclosed by the NFC antenna will increase along with the increase in the area of ​​the first surface. It should be noted that the radiation performance of the NFC antenna is positively correlated with the area enclosed by the NFC antenna; therefore, when the area enclosed by the NFC antenna increases, the radiation performance of the NFC antenna is improved.

[0007] Furthermore, since the camera mount itself is part of the back cover of the electronic device, and is not in the stacking path from the display to the back cover, its thickness is generally not considered a factor in thinning the electronic device. Therefore, by placing the NFC antenna within the first surface, which is also not in the stacking path from the display to the back cover, the NFC antenna will not become a bottleneck for thinning the electronic device.

[0008] Optionally, the number of first light-transmitting holes can be multiple, arranged in a circular array along the camera bracket. It should be understood that when the camera bracket has multiple first light-transmitting holes, the size of the camera bracket is larger, resulting in a larger area of ​​the first surface. Based on this, the area enclosed by the NFC antenna laid within the first surface can be guaranteed, thereby ensuring the radiation performance of the NFC antenna.

[0009] One possible design involves an NFC antenna with ferrite and metal traces running along the edge of the ferrite. The area of ​​the metal trace in the first orthographic projection is called the trace projection area, which is annular. A first light-transmitting aperture is located inside the annular area corresponding to the trace projection area.

[0010] In this design, the projection area of ​​the trace is annular, and therefore the metal trace is also annular. Since the first light-transmitting holes are all located inside the annulus corresponding to the trace projection area, the metal trace is laid between the edges of the first light-transmitting holes and the camera bracket, with the first light-transmitting holes surrounded by the metal trace. It can be seen that the metal trace is an annulus located between the edges of the first light-transmitting holes and the camera bracket. As the number of cameras increases, the number of first light-transmitting holes increases, and the camera bracket will also increase, resulting in a corresponding increase in the area of ​​the first surface. It should be understood that when the area of ​​the first surface increases, the area of ​​any annulus located between the edges of the first light-transmitting holes and the camera bracket will also increase. Based on this, the trace area of ​​the metal trace (an annulus located between the edges of the first light-transmitting holes and the camera bracket) is increased, thereby improving the radiation performance of the NFC antenna.

[0011] Optionally, the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket is greater than a first threshold. The first threshold is at least the width of the metal trace. This ensures sufficient space between the first light-transmitting hole and the edge of the camera bracket for the NFC antenna, thereby guaranteeing the radiation performance of the NFC antenna.

[0012] Another possible design involves an NFC antenna with ferrite and metal traces running along the edges of the ferrite. The area of ​​the metal traces in the first orthographic projection is called the trace projection area, which is annular. The first light-transmitting aperture is located on the outer side of the annular area corresponding to the trace projection area.

[0013] In this design, the projection area of ​​the traces is annular, and therefore the metal traces are also annular. Since the first light-transmitting holes are all located outside the annular area corresponding to the trace projection area, the metal traces are laid within the array path of the first light-transmitting holes. It can be seen that the metal traces are annular rings located within the array path of the first light-transmitting holes. As the number of cameras increases, the number of first light-transmitting holes increases, and the camera bracket will also increase, resulting in a corresponding increase in the area of ​​the first surface. It should be understood that when the area of ​​the first surface increases, the area of ​​any annular ring located within the array path of the first light-transmitting holes will also increase. Based on this, the trace area of ​​the metal traces (annular ring located within the array path of the first light-transmitting holes) can be increased, thereby improving the radiation performance of the NFC antenna.

[0014] Optionally, the minimum distance between the edge of the first light-transmitting aperture and the edge of the camera bracket is less than a second threshold. The second threshold is at least the width of the metal trace. In this case, the space between the first light-transmitting aperture and the edge of the camera bracket is small, insufficient for laying the NFC antenna. It should be understood that when the overall structure of the camera bracket is large, and the space between the first light-transmitting aperture and the edge of the camera bracket is small, the area within the array path of the first light-transmitting aperture will inevitably be large. In this case, the solution of laying the metal trace within the array path of the first light-transmitting aperture can be implemented in this scenario to ensure the radiation performance of the NFC antenna.

[0015] Optionally, two adjacent first light-transmitting holes on the array path are designated as a first adjacent hole and a second adjacent hole, respectively. The NFC antenna has an extension region extending along a first direction, which is away from the geometric center of the camera bracket and faces the area between the first and second adjacent holes. In this embodiment, the presence of the extension region allows the NFC antenna to capture the area enclosed by the metal traces within the extension region, thus improving the radiation performance of the NFC antenna.

[0016] As an optional embodiment, the spacing between the first adjacent hole and the second adjacent hole in the array direction is greater than a third threshold, where the third threshold is at least three times the width of the metal trace. The portion of the metal trace located in the extension region includes the first trace and the second trace. Both the first trace and the second trace extend in a second direction and pass through the position between the first and second adjacent holes. The first trace and the second trace are spaced apart in a third direction. The third direction is the array direction of the first and second adjacent holes, and the second direction is perpendicular to the third direction.

[0017] It should be noted that the radiation performance of the NFC antenna can only be significantly improved through the extension area when the area of ​​the metal trace in the extension area is large enough, and the existence of the extension area is meaningful.

[0018] In this embodiment, when the distance between the first adjacent hole and the second adjacent hole in the array direction is greater than a third threshold, it indicates that the distance between the first adjacent hole and the second adjacent hole is relatively large. In this case, the first trace and the second trace passing through the position between the first adjacent hole and the second adjacent hole can maintain a large distance to obtain a sufficiently large trace area. In addition, both the first trace and the second trace are traced along the second direction, which can maintain the same distance from the first adjacent hole and the second adjacent hole, respectively. This is not only more aesthetically pleasing, but also avoids the problem of one side having too large a distance and the other side having too small a distance, making it difficult to process. Furthermore, the first trace and the second trace maintain a distance in the third direction. Since the trace area of ​​the metal trace is determined by the area enclosed by the metal trace, the trace area can only be obtained by extending the area when the first trace and the second trace have a distance in the third direction. The existence of the extended area is meaningful.

[0019] As another optional embodiment, the spacing between the first adjacent via and the second adjacent via in the array direction is less than a fourth threshold, the fourth threshold being at least three times the width of the metal trace. The portion of the metal trace located in the extension region includes the first trace and the second trace. The first trace and the second trace gradually converge in a second direction, which is perpendicular to the array direction of the first adjacent via and the second adjacent via.

[0020] It should be noted that when the distance between the first and second adjacent holes in the array direction is less than the fourth threshold, it indicates that the distance between the first and second adjacent holes is not large. In this case, if both the first and second traces extend in the second direction, the distance between the first and second traces will also be small, making the routing more difficult and requiring extremely high processing technology. Furthermore, the small distance between the first and second traces results in a smaller gain in trace area. Achieving a small trace area under difficult processing is undoubtedly counterproductive. Therefore, in this embodiment, the first and second traces are gradually converging in the second direction, avoiding the routing difficulties caused by the relatively small distance between the first and second adjacent holes in the array direction. Moreover, compared to solutions without an extension area, this embodiment can capture the trace area of ​​the metal trace in the extension area, thereby improving the radiation performance of the NFC antenna.

[0021] Another possible design involves an NFC antenna with ferrite and metal traces running along the edge of the ferrite. The area of ​​the metal traces in the first orthographic projection is the trace projection area, which is annular. A portion of the multiple first light-transmitting holes is located on the outer side of the annular area corresponding to the trace projection area; the remaining portions of the multiple first light-transmitting holes are located on the inner side of the annular area corresponding to the trace projection area.

[0022] Since the first light-passing hole can be used to mount a camera, flash, or sensor, different first light-passing holes can mount different devices, and their sizes may vary. This can result in some first light-passing holes having relatively small spaces between them and the edge of the camera bracket, while others have relatively large spaces. For first light-passing holes with smaller spaces between them and the edge of the camera bracket, they are located on the inner side of the annular area corresponding to the wiring projection area, i.e., surrounded by metal wiring. For first light-passing holes with larger spaces between them and the edge of the camera bracket, they are located on the outer side of the annular area corresponding to the wiring projection area, i.e., outside the metal wiring. Therefore, this embodiment fully utilizes the space between the first light-passing hole and the edge of the camera bracket for wiring, maximizing the wiring area and thus improving the radiation performance of the NFC antenna.

[0023] For example, when the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket is less than a first threshold, the first light-transmitting hole is located on the outer side of the annulus corresponding to the trace projection area. The first threshold is at least the trace width of the metal trace. When the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket is greater than the first threshold, the first light-transmitting hole is located on the inner side of the annulus corresponding to the trace projection area.

[0024] In this example, when the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket is less than the first threshold, it can be considered that the space between the first light-transmitting hole and the edge of the camera bracket is small, and the metal trace cannot be routed from here; when the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket is greater than the first threshold, it can be considered that the space between the first light-transmitting hole and the edge of the camera bracket is large, and the metal trace can be routed from here, thereby surrounding the first light-transmitting hole inside and obtaining the area gain of this part.

[0025] Optionally, the NFC has a clearance hole, the area of ​​which on the first orthographic projection is the clearance area, located on the inner side of the ring corresponding to the trace projection area. The camera bracket also has a second light-transmitting hole, which overlaps with the clearance area, and is used to face a second flash, a second sensor, or a second camera.

[0026] In this embodiment, the avoidance area overlaps with the second light-transmitting hole. That is, the second light-transmitting hole is located in the area of ​​the camera bracket directly opposite the avoidance hole. It should be understood that the avoidance area is located on the inner side of the annular ring corresponding to the trace projection area, meaning the avoidance hole is located within the area of ​​the metal trace. The presence of the avoidance hole does not affect the trace area of ​​the metal trace, and therefore does not affect the radiation performance of the NFC antenna. While ensuring the radiation performance of the NFC antenna, this embodiment adds a light-transmitting hole without increasing the size of the camera bracket. Therefore, it can support the installation of an additional camera, which is beneficial for meeting the trend of increasing camera numbers.

[0027] Optionally, the aforementioned electronic device also includes a decorative lens. An adhesive backing area is provided on the edge of the first surface of the camera bracket, and the decorative lens is fixed to the first surface of the camera bracket by connecting to the adhesive backing area. An NFC antenna is disposed between the decorative lens and the first surface of the camera bracket, and the first orthographic projection and the adhesive backing area do not overlap. In this embodiment, the decorative lens can protect and enhance the appearance of the camera. The first orthographic projection and the adhesive backing area do not overlap, meaning the NFC antenna needs to be laid away from the adhesive backing area to avoid warping of the decorative lens during installation due to the NFC antenna, which could prevent proper adhesion and sealing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of three NFC antennas provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram showing the placement of the NFC antenna on an electronic device in a possible design scheme.

[0030] Figure 3 For the section line AA Figure 2 A cross-sectional view obtained by cutting;

[0031] Figure 4 This is a schematic diagram showing the placement of the NFC antenna on the electronic device in another possible design scheme.

[0032] Figure 5 Schematic diagrams of the structure of electronic devices provided in some embodiments of this application;

[0033] Figure 6 For the section line along BB Figure 5 A cross-sectional view obtained by cutting the electronic device shown;

[0034] Figure 7 This is a schematic diagram illustrating the trace width of the metal trace in an embodiment of this application;

[0035] Figure 8 Schematic diagrams of the structure of electronic devices provided in other embodiments of this application;

[0036] Figure 9 Schematic diagrams of the structure of electronic devices provided in other embodiments of this application;

[0037] Figure 10 Schematic diagrams of the structure of electronic devices provided in other embodiments of this application;

[0038] Figure 11 The diagram shows the structure of an electronic device provided in some other embodiments of this application. Detailed Implementation

[0039] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0040] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0041] In this embodiment, "ring" refers to a shape obtained by extending an outer edge of a predetermined shape inward by a predetermined distance to form an inner edge. Based on this, a ring has an outer edge line and an inner edge line. The inner side of the ring refers to the area within the inner edge line of the ring, and the outer side of the ring refers to the area outside the outer edge line of the ring, which will not be elaborated further. It should be understood that in this embodiment, the ring can be a circular ring or a non-circular ring, such as a square ring, a polygonal ring, etc.

[0042] With the development of technology, electronic devices such as mobile phones, tablets, and laptops generally have NFC functionality to enable mobile payments and other functions. The radiation performance of the NFC antenna plays a crucial role in the NFC function.

[0043] It should be noted that an NFC antenna consists of ferrite and metal traces. The metal traces are used for electromagnetic wave radiation, while the ferrite reduces the risk of eddy currents caused by interference between the NFC antenna and other electronic components (such as components on the motherboard). The ferrite has two opposing sides, and the metal traces are laid along the edge of one side of the ferrite. The radiation performance of the NFC antenna is mainly affected by the area enclosed by the metal traces (hereinafter referred to as the trace area; when the metal traces consist of multiple coils, the area enclosed by the outermost coil is usually considered the trace area). It is largely unaffected by the presence of ferrite within the trace area, and a larger trace area generally results in better radiation performance. The presence of ferrite within the trace area affects the anti-interference effect of the NFC antenna.

[0044] like Figure 1 As shown, Figure 1 In (a) of the diagram, the NFC antenna 30 includes a ferrite core 31 and a metal trace 32 running along the edge of the ferrite core 31. The trace region of the metal trace 32 is region A1. This differs from... Figure 1 (a) in the middle, Figure 1 In (b) of the diagram, the routing area of ​​metal trace 32 is region B1. This differs from... Figure 1 (a) in the middle, Figure 1 In (c), the routing area of ​​metal trace 32 is region C1. By comparison... Figure 1 As can be seen from (a) and (b), the routing area of ​​routing region A1 is larger than the routing area of ​​routing region B1. Figure 1 The NFC antenna shown in (a) has better radiation performance; by comparison Figure 1 As can be seen from (b) and (c), there is no ferrite in trace region A1, but there is ferrite in trace region C1. However, since the trace area of ​​trace region A1 and trace region C1 are the same, therefore... Figure 1The radiation performance of the NFC antennas shown in (a) is roughly the same.

[0045] Therefore, ensuring the trace area of ​​the NFC antenna and maximizing the trace area gain within a limited space are crucial for guaranteeing the radiation performance of the NFC antenna.

[0046] Please see Figure 2 , Figure 2 This is a schematic diagram illustrating the arrangement of the NFC antenna on an electronic device in one possible design. The electronic device includes a back cover 10, a camera bracket 20, and an NFC antenna 30. Both the camera bracket 20 and the NFC antenna 30 are mounted on the back cover 10. The camera bracket 20 is used to mount the camera of the electronic device. In some embodiments, if the electronic device includes a flash or sensor, the camera bracket 20 is also used to mount the flash or sensor. It should be understood that "mounting" here means that the camera bracket 20 needs to have a certain cooperative relationship with the camera, flash, or sensor, and does not necessarily mean that there is a direct connection between the camera, flash, or sensor and the camera bracket 20. For example, the light-transmitting hole on the camera bracket may be directly opposite the camera. Of course, in other embodiments, there may also be a connection relationship, which is not specifically limited in this application.

[0047] On the one hand, the camera bracket 20 can serve to decorate the camera, flash, or sensor; on the other hand, it can protect the camera, flash, or sensor from damage. For example... Figure 2 As shown, the NFC antenna 30 is distributed circumferentially along the camera bracket 20 and surrounds the outside of the camera bracket 20.

[0048] In this design, as the area occupied by the camera bracket 20 on the back cover 10 increases, the trace area of ​​the NFC antenna 30 also increases. However, due to the limited internal space of the electronic device, when the trace area of ​​the NFC antenna 30 increases, the laying of the metal traces of the NFC antenna 30 will be blocked by other components inside the electronic device (such as the battery), thus preventing the traces from being laid. In other words, Figure 2 The design shown cannot support the laying of NFC antenna 30 with a large wiring area. In scenarios where the area of ​​camera bracket 20 is too large, other methods need to be sought to ensure the wiring area of ​​NFC antenna 30 in order to ensure the radiation performance of NFC antenna 30.

[0049] Please see Figure 3 , Figure 3 For the section line AA Figure 2The diagram shows a cross-sectional view of the electronic device obtained by cutting it. The electronic device includes a back cover 10, a mid-frame 50, and a display screen 40. The display screen 40 and the back cover 10 are respectively disposed on opposite sides of the mid-frame 50, forming a cavity. A motherboard 60, a motherboard bracket 70 for supporting the motherboard 60, and an NFC antenna 30 are stacked within the cavity. It can be seen that the NFC antenna 30 is a component along the thickness direction of the electronic device. With the popularity of ultra-thin electronic devices, the thickness of the NFC antenna 30 is also one of the bottlenecks in the overall thinning of the device.

[0050] Please see Figure 4 , Figure 4 This is a schematic diagram showing the placement of the NFC antenna in another possible design. (Different from...) Figure 2 and Figure 3 In the illustrated scheme, the camera bracket 20 and the NFC antenna 30 are arranged side by side on the back cover 10 of the electronic device, with the NFC antenna 30 located on the side of the camera bracket 20.

[0051] In this design, when the area occupied by the camera bracket 20 on the back cover 10 increases, the usable space for the NFC antenna 30 will be reduced. Consequently, the wiring area of ​​the NFC antenna 30 will decrease, thus compromising its radiation performance. Furthermore, Figure 4 In the scheme shown, the NFC antenna 30 is also a device on the stacking path of the electronic device in the thickness direction, that is, the thickness of the NFC antenna 30 is still the bottleneck for the overall thinning of the device.

[0052] As can be seen, in both of the above embodiments, the routing of the NFC antenna 30 is affected by the area occupied by the camera bracket 20. However, the current trend in electronic device development is that camera modules are becoming larger and the number of cameras is increasing. Therefore, the area occupied by the camera bracket 20 on the back cover 10 will also become larger. Clearly, Figure 1 and Figure 4 The arrangement of the NFC antenna 30 shown cannot meet the development requirements of electronic devices.

[0053] Furthermore, in both of the above embodiments, the NFC antenna 30 is a device on the stacking path of the electronic device in the thickness direction.

[0054] To address the bottleneck of thinning NFC antennas in existing technologies, and the problem that the wiring method of existing NFC antennas cannot guarantee the radiation performance of NFC antennas as the area occupied by camera brackets increases, this application provides an improved electronic device.

[0055] This electronic device can ensure the trace area of ​​the NFC antenna even in scenarios with large camera brackets, thereby guaranteeing the radiation performance of the NFC antenna and eliminating the NFC antenna as a bottleneck for thinning the electronic device. It should be understood that the electronic device in this application embodiment can be a mobile phone, tablet computer, desktop, laptop, handheld computer, notebook computer, ultra-mobile personal computer (UMPC), netbook, as well as cellular phones, personal digital assistants (PDAs), augmented reality (AR) / virtual reality (VR) devices, and other devices with NFC antennas and cameras. This application embodiment does not impose any special limitations on the specific form of the electronic device.

[0056] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0057] Please see Figure 5 and Figure 6 , Figure 5 The diagram shows the structure of an electronic device provided in some embodiments of this application. Figure 6 For along Figure 5 The cross-sectional view obtained by cutting along section line BB in the image. This electronic device is a mobile phone, including a mid-frame 50 ( Figure 5 (not shown in the image), display screen 40 ( Figure 5 (Not shown in the image) and back cover 10. The middle frame 50 provides fixed support for the functional components within the electronic device and is typically made of metal materials such as stainless steel or aluminum alloy. The display screen 40 and back cover 10 are respectively disposed on opposite sides of the middle frame 50, and the display screen 40, middle frame 50, and back cover 10 are stacked. In some embodiments, the display screen 40 is provided with functional components such as a front-facing camera module, earpiece, and fill light. In some embodiments, a motherboard 60, battery, speaker, and other functional components are disposed between the back cover 10 and the middle frame 50. Furthermore, the back cover 10 has mounting holes for mounting the camera assembly of the electronic device.

[0058] like Figure 5 As shown, the camera assembly includes a camera bracket 20, and a camera, flash, or sensor mounted within the camera bracket 20. Figure 5 (Not shown). The sensor can be a laser ranging (time of flight, TOF) sensor, ambient light sensor, infrared temperature sensor, or other device that requires light for detection. The camera bracket 20, also known as a camera decorative piece, can be circular in shape. It should be understood that although... Figure 5The illustration shows a circular camera bracket 20, but the camera bracket 20 can also be elliptical, rectangular, rhomboid, or other regular or approximately regular shapes. This application embodiment does not specifically limit this. The camera bracket 20 is embedded in a mounting hole in the back cover 10, thereby being mounted on the back cover 10. The camera bracket 20 includes a first surface S1 and a second surface S2 that are disposed opposite to each other. Figure 5 (Not shown in the image), the first surface S1 of the installed camera bracket 20 is the side facing the outside of the electronic device.

[0059] The camera bracket 20 has four first light-transmitting holes, namely light-transmitting hole K1, light-transmitting hole K2, light-transmitting hole K3, and light-transmitting hole K4. Light-transmitting hole K1 can be opposite to a camera for mounting the camera, allowing light to pass through and enter the camera for taking a picture. Light-transmitting hole K1 can also be opposite to a flash for mounting a flash, allowing light emitted by the flash to pass through and illuminate the camera. Light-transmitting hole K1 can also be opposite to a sensor for mounting a sensor, allowing the sensor to monitor the external environment through the light-transmitting hole K1. It should be understood that "mounting" here means that the light-transmitting hole K1 needs to be directly opposite the camera, flash, or sensor, and does not mean that the camera, flash, or sensor has a direct connection to the camera bracket 20. Of course, in other embodiments, there may be a direct connection, which is not specifically limited in this application. Subsequent related content will refer to this definition and will not be repeated here. The other first light-transmitting holes can be implemented in the same way and will not be described further here. It should be understood that, generally speaking, electronic devices only have one flash unit. Therefore, electronic devices have only one primary light-transmitting aperture for mounting the flash unit. It should be noted that, although... Figure 5 The illustration shows four first light-transmitting holes arranged in a square array, but this example should not be construed as a specific limitation of this application. In other embodiments, the number of first light-transmitting holes can be other numbers, such as three, four, five, or even more. It should be understood that as the number of cameras in an electronic device increases, the required number of first light-transmitting holes also increases. The more first light-transmitting holes there are, the larger the corresponding camera bracket 20 will be, and the larger the area of ​​the back cover it occupies. Generally speaking, when the camera bracket 20 has three or more first light-transmitting holes, the area of ​​the back cover occupied by the camera bracket 20 is relatively large.

[0060] Furthermore, the light-transmitting holes K1, K2, K3, and K4 are arranged in a circular array along a square. Specifically, the circular array of light-transmitting holes K1, K2, K3, and K4 along a square refers to the array path where the circles (i.e., geometric centers) of light-transmitting holes K1, K2, K3, and K4 are connected end to end to form a square (shown by the dotted lines of the squares in the figure). It should be understood that the geometric center refers to the central position of an object with a certain degree of symmetry, such as the center of a circle, the center of a sphere, or the intersection of the two diagonals of a parallelogram. Based on this, in other embodiments, if the first light-transmitting hole is of other shapes, such as a rhombus, a square, or a rectangle, then the intersection of the two diagonals is the geometric center of the first light-transmitting hole. In addition, it should be noted that in other embodiments, other circular array paths can also be used, such as elliptical rings, rectangular rings, rhomboid rings, polygonal rings, etc., and this application does not specifically limit this.

[0061] like Figure 5 As shown, to implement NFC functionality, the electronic device also includes an NFC antenna 30. The NFC antenna 30 is disposed on the first surface S1 of the camera bracket 20, and the NFC antenna 30 is along the thickness direction of the electronic device (i.e., Figure 6 The orthographic projection (i.e., the first orthographic projection) of the first surface S1 (indicated by the Z-direction indicated by the middle arrow) falls within the first surface S1, meaning the NFC antenna 30 is laid within the first surface S1. Specifically, the NFC antenna 30 can be laid by creating a groove in the first surface S1 of the camera bracket 20. Since the camera bracket 20 protrudes significantly from the back cover 10, typically by 0.85–1.0 mm or even higher, such as 2–3 mm, it is evident that the thickness of the camera bracket 20 is sufficient, and its strength is adequate to support the NFC antenna 30 laid in the groove on its surface.

[0062] It should be noted that since the camera bracket 20 protrudes from the back cover 10 of the electronic device, it is not in the stacking path of the electronic device from the display screen 40 to the back cover 10, and its thickness is generally not considered a factor in reducing the thickness of the electronic device. Therefore, laying the NFC antenna 30 within the first surface S1 increases the thickness of the camera assembly protruding from the back cover 10, not the thickness of the electronic device. Compared to Figure 2 and Figure 4 In the illustrated scheme, the NFC antenna 30 is not in the stacking path from the display to the back cover 10, so the NFC antenna will not become a bottleneck for thinning the electronic device, and can also reduce the thickness of the electronic device. In addition, by laying the NFC antenna 30 on the first surface S1 of the camera bracket 20 through a groove, the NFC antenna 30 can also be flush with the first surface S1 of the camera bracket 20, thereby not increasing the thickness of the camera assembly protruding from the back cover 10.

[0063] It should also be noted that this embodiment only illustrates and describes the portion of the NFC antenna 30 located inside the camera bracket 20. It should be understood that the NFC antenna 30 also has a portion located outside the camera bracket 20, which is provided with a power supply point. The NFC antenna 30 is connected to the motherboard 60 via the power supply point. Figure 6 Showing Figure 5 The RF module (not shown) is coupled to the NFC antenna 30. The RF module receives electromagnetic waves via the NFC antenna 30, modulates and filters the electromagnetic wave signal, and sends the processed signal to the processor. The RF module can also modulate and amplify the signal sent by the processor, and then convert it into electromagnetic waves for radiation via the NFC antenna 30.

[0064] Furthermore, in this embodiment, since the NFC antenna 30 has been moved from the stacking path along the thickness direction of the electronic device to inside the camera bracket 20, the distance between the NFC antenna 30 and the motherboard 60 has increased. Therefore, the connection between the NFC antenna 30 and the motherboard 60 differs somewhat from current NFC antenna connection schemes. Specifically, as... Figure 6 As shown, the NFC antenna 30 and the motherboard 60 can be connected via a spring clip mounted on the motherboard 60 abutting against the feed point of the NFC antenna 30 on the camera bracket 20. Compared to ordinary spring clips, the spring clip used in this embodiment is taller. Alternatively, a longer flexible printed circuit board (FPC) can be used. In this case, one end of the NFC antenna 30 with its feed point can be fixed to the motherboard bracket 70, and an ordinary spring clip abuts against the motherboard bracket 70. The FPC can also be replaced with a board-to-board (B2B) connector.

[0065] like Figure 5 As shown, to avoid the NFC antenna 30 affecting the normal operation of the device corresponding to the first light-transmitting hole, the NFC antenna 30's orthographic projection on the first surface S1 (i.e., the first orthographic projection) and the light-transmitting holes K1, K2, K3, and K4 do not overlap, so that the NFC antenna avoids the light-transmitting holes K1, K2, K3, and K4. In this way, the NFC antenna 30 will not block the first light-transmitting hole.

[0066] To ensure that the first orthographic projection does not overlap with light-transmitting apertures K1, K2, K3, and K4 Figure 5In the illustrated electronic device, the NFC antenna 30 includes a ring-shaped ferrite core 31 and a metal trace 32 running along the edge of the ferrite core 31. The metal trace 32 is also ring-shaped, and its area in the first orthographic projection is the trace projection area. Since the metal trace 32 is ring-shaped, the trace projection area is also ring-shaped. Light-transmitting holes K1, K2, K3, and K4 are all located inside the ring corresponding to the trace projection area. In other words, the metal trace 32 surrounds the light-transmitting holes K1, K2, K3, and K4 within itself.

[0067] In this embodiment, the metal trace 32 surrounds the light-transmitting holes K1, K2, K3, and K4 within its interior, and is... Figure 5 As can be seen, no ferrite is laid in the area within the metal trace 32. That is to say, the light-transmitting holes K1, K2, K3, K4 and the ferrite 31 do not overlap. Therefore, the first orthographic projection and the first light-transmitting hole do not overlap. In this way, the NFC antenna 30 can avoid the first light-transmitting hole, thereby avoiding affecting the normal operation of the device corresponding to the first light-transmitting hole.

[0068] It should be understood that, although Figure 5 The illustration shows that the ferrite 31 is a hollow ring structure. However, in other embodiments, the ferrite 31 can also be configured to only avoid the light-transmitting holes K1, K2, K3, and K4. That is, the ferrite 31 is laid on the inner side of the first surface S1, except for the location of the first light-transmitting hole (referred to as the area within the metal trace 32). In this way, the risk of eddy currents formed by mutual interference between the NFC antenna 30 and other electronic components of the electronic device can be further reduced. This application does not specifically limit this. It should be noted that the ferrite area traversed by the metal trace 32 has a better anti-interference effect than the ferrite area traversed by the metal trace 32 (the area within the metal trace 32). Since the radiation performance of the NFC antenna 30 is determined by the trace area of ​​the metal trace 32, whether or not ferrite is laid in the area within the metal trace 32 has a small effect on improving the radiation performance of the NFC antenna 30. Considering cost and processing difficulty, it is usually chosen to lay ferrite. Figure 5 The scheme shown involves laying ferrite 31.

[0069] To protect and enhance the appearance of the camera, in some embodiments, such as Figure 6As shown, the aforementioned electronic device also includes a decorative lens 80, which is fixed to the first surface S1 by bonding it to an adhesive backing area 90 at the edge of the first surface S1. The aforementioned NFC antenna 30 is disposed between the decorative lens 80 and the first surface S1, and does not overlap with the adhesive backing area 90. That is, the NFC antenna 30 needs to be laid away from the adhesive backing area 90 to prevent warping of the decorative lens 80 during installation, which could result in poor adhesion and sealing.

[0070] It should be noted that, Figure 5 The illustrated solution is typically applied in scenarios where the camera bracket 20 occupies a large area of ​​the back cover, and there is a large space between the first light-transmitting hole and the edge of the camera bracket 20. This ensures that there is a sufficiently large area between the first light-transmitting hole and the camera bracket 20 to accommodate the NFC antenna 30 and meet its radiation performance requirements. In some embodiments, when the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket 20 is greater than a first threshold, it can be considered that the space between the first light-transmitting hole and the edge of the camera bracket 20 is large.

[0071] The minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket 20 refers to the distance between the two closest points on the edge line of the first light-transmitting hole and the edge line of the camera bracket 20. The following example uses light-transmitting hole K1; other first light-transmitting holes can be implemented similarly. Please refer to... Figure 5 When the camera bracket 20 is circular and the light-transmitting hole K1 is circular, a straight line is drawn from the center of the camera bracket 20 to the center of the light-transmitting hole K1. This straight line intersects the edge line of the camera bracket 20 and the edge line of the light-transmitting hole K1 at points M and N, respectively. The distance between points M and N is the aforementioned minimum distance. In other embodiments, when the camera bracket 20 is rectangular and the light-transmitting hole K1 is circular, the aforementioned minimum distance is the smallest distance among the distances from the center of the light-transmitting hole K1 to each side of the camera bracket 20.

[0072] The aforementioned first threshold is at least the width of the metal trace 32. The width of the metal trace 32 refers to the total width of all coils wrapped around the ferrite 31 (one loop of the metal trace 32 around the ferrite 31 constitutes one coil). Figure 5 The width refers to the area occupied by the two coils, not the width of a single metal trace 32. For example, as shown... Figure 7As shown, the metal trace 32 surrounding the ferrite 31 has three coils, and the trace width of the metal trace 32 is indicated by a double-arrow line. Considering that the metal trace 32 needs to maintain a distance from the adhesive area 90 and the first through hole respectively to avoid the adhesive area 90 and the first through hole, preferably, the first threshold is greater than the trace width of the metal trace 32. For example, under existing processing technology, the trace width of the metal trace 32 is usually 2.5 mm, the width of the adhesive area 90 is usually 1 mm, the distance between the outer edge of the adhesive area 90 and the metal trace 32 is usually 0.5 mm, and the distance from the inner edge of the metal trace 32 to the first through hole is usually 1 mm. Therefore, the first threshold can be twice the trace width of the metal trace 32.

[0073] It should be understood that, although Figure 5 The illustration shows that both the ferrite 31 and the metal trace 32 are circular, and the NFC antenna 30 also presents a circular shape overall. In other embodiments, the NFC antenna 30 may also have other shapes, and this application embodiment does not specifically limit this. It should be understood that, for aesthetic purposes, the shape of the NFC antenna 30 can be determined based on the shape of the camera bracket 20, the position of the first light-passing hole, and the decorative lens 80. Figure 6 The design differentiates based on factors such as the size of the window, ensuring proper structural protection, display of camera component type identification information, parameter information, and other text, while maximizing the concealment of the NFC antenna 30 beneath the compact disk (CD) decorative pattern of the decorative lens 80.

[0074] Figure 5 In the illustrated electronic device, the projection area of ​​the trace is annular, therefore the metal trace 32 is also annular. Since the first light-transmitting holes are all located inside the annulus corresponding to the trace projection area, the metal trace 32 is laid between the edges of the first light-transmitting holes and the camera bracket 20, with the first light-transmitting holes surrounded by the metal trace 32. It can be seen that the metal trace 32 is annular between the edges of the first light-transmitting holes and the camera bracket 20. As the number of cameras increases, the number of first light-transmitting holes increases, and the camera bracket 20 will also increase, resulting in a corresponding increase in the area of ​​the first surface S1. It should be understood that when the area of ​​the first surface S1 increases, the area of ​​any annulus located between the edges of the first light-transmitting holes and the camera bracket 20 will also increase. Based on this, the trace area of ​​the metal trace 32 (an annulus located between the edges of the first light-transmitting holes and the camera bracket 20) is increased, thereby improving the radiation performance of the NFC antenna 30.

[0075] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of an electronic device provided in other embodiments of this application. Distinguished from... Figure 5The illustrated electronic device has a relatively large overall structure for the camera bracket 20, while the space between the first light-transmitting hole and the edge of the camera bracket 20 is relatively small. For example, when the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket 20 is less than a second threshold, it can be considered that the space between the first light-transmitting hole and the edge of the camera bracket 20 is small. The second threshold is at least the width of the metal trace 32. The specific implementation of the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket 20 can be found in [reference needed]. Figure 5 Regarding the relevant content, the specific implementation of the second threshold can refer to the implementation of the first threshold, and will not be repeated here. It should be understood that the first threshold and the second threshold can be the same value or different values, and this application embodiment does not specifically limit this. Obviously, in this case, the space between the first light-transmitting hole and the edge of the camera bracket 20 is insufficient to implement... Figure 5 The scheme shown.

[0076] It should be understood that when the overall structure of the camera bracket 20 is relatively large, and the space between the first light-transmitting hole and the edge of the camera bracket 20 is relatively small, the area within the array path of the first light-transmitting hole (a closed path formed by connecting the geometric centers of multiple first light-transmitting holes end to end, as indicated by the dashed square line in the figure) is usually relatively large. Thus, the area within the array path of the first light-transmitting hole has a sufficiently large area to accommodate the NFC antenna 30. Based on this, it differs from... Figure 5 The electronic device shown, Figure 8 In the illustrated electronic device, light-transmitting holes K1, K2, K3, and K4 are located on the outer side of the corresponding annular area of ​​the trace projection region, and do not overlap with the first orthographic projection. In other words, Figure 8 In the scheme shown, the first light-transmitting hole is located outside the metal trace 32, and the metal trace 32 is laid within the array path of the first light-transmitting hole.

[0077] It should be understood that since the metal trace 32 runs along the edge of the ferrite 31, there is also a projection area of ​​the ferrite 31 outside the annular area corresponding to the trace projection area. However, in this embodiment, the light-transmitting holes K1, K2, K3, and K4 are not only located outside the annular area corresponding to the trace projection area, but also do not overlap with the first orthographic projection. Therefore, in this embodiment, the first light-transmitting hole is not actually laid outside the metal trace 32, but outside the NFC antenna 30. It should also be understood that in this embodiment, although... Figure 8 The illustration shows that ferrite 31 is a solid structure. In other embodiments, it can also be set as a ring structure. For specific implementation details, please refer to [reference needed]. Figure 5 The relevant content will not be repeated here.

[0078] Figure 8In the illustrated electronic device, the projection area of ​​the trace is annular, therefore the metal trace 32 is also annular. Since the first light-transmitting holes are all located outside the annular area corresponding to the trace projection area, the metal trace 32 is laid within the array path of the first light-transmitting holes. It can be seen that the metal trace 32 is an annular ring located within the array path of the first light-transmitting holes. As the number of cameras increases, the number of first light-transmitting holes increases, and the camera bracket 20 will also increase, resulting in a corresponding increase in the area of ​​the first surface S1. It should be understood that when the area of ​​the first surface S1 increases, the area of ​​any annular ring located within the array path of the first light-transmitting holes will also increase accordingly. Based on this, the trace area of ​​the metal trace 32 (an annular ring located within the array path of the first light-transmitting holes) is increased, thereby improving the radiation performance of the NFC antenna 30.

[0079] like Figure 8 As shown, in order to obtain the largest possible trace area gain and improve the radiation performance of the NFC antenna 30, the NFC antenna 30 has four extension regions: extension region Q1, extension region Q2, extension region Q3, and extension region Q4. The specific implementation of extension region Q1 is described below as an example, and the implementation of other extension regions can be referred to.

[0080] The extension region Q1 extends in the second direction (indicated by the dashed arrow in the figure) and passes through the position between adjacent light-transmitting holes K1 (i.e., the first adjacent hole) and K2 (i.e., the second adjacent hole) on the array path (indicated by the square dashed line in the figure). The second direction is away from the center of the first surface S1 (i.e., the geometric center of the first surface S1) and perpendicular to the array direction of light-transmitting holes K1 and K2. The array direction of light-transmitting holes K1 and K2 refers to the direction of the center line connecting the center (geometric center) of light-transmitting hole K1 and the center (geometric center) of light-transmitting hole K2. For ease of explanation, the array direction of light-transmitting holes K1 and K2 will be referred to as the third direction below.

[0081] The extended region Q1 is also covered with ferrite and ferrite edge traces. The portion of the metal trace 32 located in the extended region Q1 includes a first trace L1 and a second trace L2. Both the first trace L1 and the second trace L2 extend in a second direction, passing through the position between the light-transmitting aperture K1 and the light-transmitting aperture K2, and the first trace L1 and the second trace L2 are spaced apart in a third direction.

[0082] In this embodiment, the presence of the extended region Q1 allows the NFC antenna 30 to capture the trace area of ​​the metal trace 32 within the extended region Q1, thus improving the radiation performance of the NFC antenna 30. Furthermore, both the first trace L1 and the second trace L2 are routed along the second direction, maintaining the same spacing with the light-transmitting holes K1 and K2 respectively. This improves aesthetics and avoids the problem of uneven spacing, making processing difficult. Moreover, the first trace L1 and the second trace L2 maintain a distance in the third direction. Since the trace area of ​​the metal trace 32 is determined by the area enclosed by the metal trace 32, the extended region Q1 is necessary to capture the trace area when the first trace L1 and the second trace L2 are spaced apart in the third direction; only then is the extended region Q1 meaningful.

[0083] Of course, in other embodiments, the extension region Q1 may also be away from the center of the first surface S1 and extend towards other positions between the light-transmitting holes K1 and K2. Correspondingly, the first trace L1 and the second trace L2 also extend towards other positions between the light-transmitting holes K1 and K2. It should be understood that, compared to the solution of extending in the second direction, the solution of extending the extension region Q1 towards other positions (e.g., towards the direction of the light-transmitting hole K1) results in inconsistent spacing between the first trace L1 and the second trace L2 and the light-transmitting holes K1 and K2, respectively. This is not aesthetically pleasing, and also presents the problem of one side having too large a spacing and the other side having too small a spacing, making it difficult to process.

[0084] Furthermore, the extended region Q1 may not pass through the area between light-transmitting holes K1 and K2. Correspondingly, the first trace L1 and the second trace L2 also do not pass through the area between light-transmitting holes K1 and K2. It should be understood that the most critical factor affecting the radiation performance of the NFC antenna 30 is the trace area of ​​the metal trace 32; the larger the trace area of ​​the metal trace 32, the better the radiation performance of the NFC antenna 30. Therefore, compared to the solution where the extended region Q1 does not pass through the area between light-transmitting holes K1 and K2, Figure 8 In the illustrated scheme, the extended region Q1 passes through the area between the light-transmitting apertures K1 and K2. This ensures that the area of ​​the extended region Q1 is sufficiently large. The larger the area of ​​the extended region Q1, the larger the area of ​​the ferrite 31, as the metal trace 32 runs around the edge of the ferrite 31, and consequently, the larger the area of ​​the ferrite in the extended region Q1, and the better the radiation performance of the NFC antenna 30.

[0085] It should be noted that the radiation performance of the NFC antenna 30 can only be significantly improved through the extension region Q1 when the trace area of ​​the metal trace 32 in the extension region Q1 is large enough; only then is the existence of the extension region Q1 meaningful. To ensure that the metal trace 32 has a sufficiently large trace area in the extension region Q1... Figure 8 The solution shown is typically applied in scenarios where the distance between aperture K1 and aperture K2 is relatively large. Only in this way can a large distance be maintained between the first trace L1 and the second trace L2 to obtain a sufficiently large trace area.

[0086] In some embodiments, the spacing between apertures K1 and K2 in the array direction is greater than a third threshold, where the third threshold is at least three times the width of the metal trace 32, and is considered to indicate a large spacing between apertures K1 and K2. The spacing between apertures K1 and K2 in the array direction refers to the distance between the centers of apertures K1 and K2. The specific definition of the width of the metal trace 32 can be found in [reference needed]. Figure 5 The solution shown will not be elaborated further here. In this scenario, since the first trace L1 and the second trace L2 have already occupied the trace width of two metal traces 32, without considering the spacing between the light holes K1 and K2, there is still at least one metal trace 32's width remaining between the first trace L1 and the second trace L2. Therefore, when the third threshold is at least three times the trace width of the metal trace 32, the spacing between the light holes K1 and K2 is sufficiently large. Figure 8 Only the proposed solution can achieve a sufficiently large area gain by extending into region Q1.

[0087] In specific implementation, considering that the extended area Q1 needs to maintain a distance from both the light-transmitting holes K1 and K2 for avoidance, and that when the distance between the first trace L1 and the second trace L2 is small, there are problems with trace routing, low area gain, and minimal improvement in NFC performance, the third threshold can be greater than three times the trace width of the metal trace 32. For example, under existing processing techniques, the trace width of the metal trace 32 is typically 2.5mm; therefore, the trace widths of both the first trace L1 and the second trace L2 are 2.5mm. The distance between the first trace L1 and the second trace L2 is 5mm, the distance from the light-transmitting hole K1 to the edge line of the extended area Q1 (near the edge line of the first trace L1) is 1mm, and the distance from the light-transmitting hole K2 to the edge line of the extended area Q1 (near the edge line of the second trace L2) is 1mm. Therefore, the third threshold can be four times the trace width of the metal trace 32.

[0088] Please see Figure 9 , Figure 9This is a schematic diagram of the structure of an electronic device provided in other embodiments of this application. Distinguished from... Figure 8 The illustrated electronic device has a relatively small spacing between light-transmitting holes K1 and K2 in the array direction. For example, when the spacing between light-transmitting holes K1 and K2 in the array direction is less than a fourth threshold, the fourth threshold is at least three times the width of the metal trace 32, which can be considered as the spacing between light-transmitting holes K1 and K2 in the array direction being relatively small. The specific implementation of the fourth threshold can also refer to the implementation of the third threshold. It should be understood that the fourth threshold and the third threshold can take the same value or different values; this application embodiment does not specifically limit this. In this case, if... Figure 8 The illustrated scheme has an excessively small spacing between the extended region Q1 and the light-transmitting holes K1 and K2, respectively, and the spacing between the first trace L1 and the second trace L2 is also small. Therefore, the routing is difficult and requires extremely high processing technology. Furthermore, the small spacing between the first trace L1 and the second trace L2 results in a small gain in trace area. Achieving a small trace area under difficult processing technology is undoubtedly counterproductive. Based on this, it differs from... Figure 8 The electronic device shown, Figure 9 In the illustrated electronic device, the extended region Q1 is used as an example for explanation. The extended region Q1 extends along the second direction and passes through the position between the light-transmitting aperture K1 and the light-transmitting aperture K2. However, the first trace L1 and the second trace L2 on the extended region Q1 gradually converge in the second direction.

[0089] Specifically, the phrase "the first routing line L1 and the second routing line L2 gradually approach each other in the second direction" means that the interval between two corresponding points on the first routing line L1 and the second routing line L2 gradually decreases in the second direction. Here, the two corresponding points on the first routing line L1 and the second routing line L2 refer to the two points where a straight line extending in the third direction (perpendicular to the second direction) intersects the first routing line L1 and the second routing line L1 respectively.

[0090] In this scheme, if the first trace L1 and the second trace L2 are gradually converging in the second direction, then when passing between the light-transmitting apertures K1 and K2, the distances between the first trace L1 and the second trace L2 and the light-transmitting apertures K1 and K2 respectively will be relatively large. This will avoid the situation where routing is difficult due to the relatively small distance between the light-transmitting apertures K1 and K2 in the array direction. Furthermore, compared to the scheme without the extension region Q1, Figure 9 The scheme shown can capture the trace area of ​​the metal trace 32 in the extended region Q1, thereby improving the radiation performance of the NFC antenna.

[0091] It should be understood that in other embodiments, the extension region Q1 may not pass through the space between the light-transmitting holes K1 and K2, and the extension region Q1 may extend to other locations between the light-transmitting holes K1 and K2. The first trace L1 and the second trace L2 may also converge in other directions between the light-transmitting holes K1 and K2. This application does not specifically limit this aspect; for specific implementation effects, please refer to [the relevant documentation]. Figure 8 The proposed solution will not be elaborated upon here.

[0092] It should be noted that the most critical factor affecting the radiation performance of the NFC antenna 30 is the trace area of ​​the metal trace 32. The presence or absence of ferrite within the trace area of ​​the metal trace 32 has a relatively small impact on the radiation performance of the NFC antenna 30. Based on this, the embodiments of this application also provide the following... Figure 10 The electronic device shown.

[0093] Please see Figure 10 , Figure 10 This is a schematic diagram of the structure of an electronic device provided in other embodiments of this application. Distinguished from... Figure 9 The illustrated electronic device includes an NFC antenna 30 with a clearance hole 33 (located at the same position as the light-transmitting hole K5). The clearance hole K5 is positioned in the area projected onto the first orthographic projection as a clearance area, located on the inner side of the annular area corresponding to the trace projection area. This clearance area overlaps with the light-transmitting hole K5 (i.e., the second light-transmitting hole). In other words, the light-transmitting hole K5 is located in the area of ​​the camera bracket 20 directly opposite the clearance hole 33. The light-transmitting hole K5 can be positioned opposite the camera, allowing light to pass through the clearance hole 33 and then the light-transmitting hole K5 sequentially to enter the camera, thus enabling image capture. Alternatively, the light-transmitting hole K5 can be positioned opposite the flash, allowing light emitted from the flash to pass through the light-transmitting hole K5 and then the clearance hole 33 sequentially to illuminate the outside of the electronic device. Finally, the light-transmitting hole K5 can be positioned opposite the sensor, allowing the sensor to monitor the external environment through the clearance hole 33 and the light-transmitting hole K5.

[0094] It should be understood that the avoidance area is located on the inner side of the annulus corresponding to the trace projection area, meaning that the avoidance hole 33 is located within the metal trace 32. The presence of the avoidance hole 33 does not affect the trace area of ​​the metal trace 32, and therefore does not affect the radiation performance of the NFC antenna 30. While ensuring the radiation performance of the NFC antenna 30, Figure 10 The proposed solution is compared to Figure 9 The solution shown in this embodiment adds a light-transmitting hole without increasing the size of the camera bracket, thus supporting the installation of an additional camera, which is beneficial to meet the trend of increasing camera numbers.

[0095] It should also be understood that Figure 8In the solution shown, a clearance hole 33 can also be provided on the NFC antenna 30 to increase the number of cameras.

[0096] It should be noted that the first light-passing hole can be used to mount a camera, flash, or sensor. Therefore, different first light-passing holes can mount different devices, and their sizes may vary. Generally speaking, when mounting a flash, a small sensor, or a small camera, the first light-passing hole is smaller; when mounting a larger camera or sensor, the first light-passing hole is larger. Based on this, in practical applications, there may be scenarios where the space between some first light-passing holes and the edge of the camera bracket 20 is small, and other scenarios where the space between some first light-passing holes and the edge of the camera bracket 20 is large, not as... Figure 5 , Figure 8 , Figure 9 ,as well as Figure 10 Similarly, either all the first light-transmitting holes have a large space between them and the edge of the camera bracket 20, or all the first light-transmitting holes have a small space between them and the edge of the camera bracket 20.

[0097] In some embodiments, when the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket 20 is less than a first threshold, it can be considered that the space between the first light-transmitting hole and the edge of the camera bracket 20 is small; when the minimum distance between the edge line of the first light-transmitting hole and the edge line of the camera bracket 20 is greater than the first threshold, it can be considered that the space between the first light-transmitting hole and the edge of the camera bracket 20 is large. The specific implementation of the first threshold can be found in [reference needed]. Figure 7 The description of the first threshold will not be repeated here. For an example, please refer to [link to relevant documentation]. Figure 11 , Figure 11 This is a schematic diagram of the structure of an electronic device provided in other embodiments of this application. In this electronic device, the minimum distance between the edge lines of light-transmitting holes K1, K2, and K4 and the edge line of the camera bracket 20 is respectively... Figure 9 Consistent, all less than the first threshold. Distinguished from... Figure 9 The electronic device shown has a minimum spacing between the edge line of the light-transmitting hole K3 and the edge line of the camera bracket 20 that is greater than a first threshold. Therefore, the space between the light-transmitting hole K3 and the edge of the camera bracket 20 is large, which can support the laying of NFC antennas to obtain a larger wiring area.

[0098] Based on this, it is different from Figure 9 The proposed scheme Figure 11In the illustrated electronic device, the light-transmitting hole K3 is located on the inner side of the annular area corresponding to the trace projection area. In other words, the metal trace 32 surrounds the light-transmitting hole K3 inside it. It can be seen that this embodiment makes full use of the location on the camera bracket 20 where traces can be routed (the location between the light-transmitting hole K3 and the edge of the camera bracket 20), which can maximize the trace area and improve the radiation performance of the NFC antenna 30.

[0099] It should be understood that when the light-transmitting aperture K3 is surrounded by the metal trace 32, a clearance hole 34 needs to be provided on the NFC antenna 30, with the clearance hole 34 facing the light-transmitting aperture K3. Furthermore, Figure 11 Although the illustration shows a scenario where only light-transmitting hole K3 has a relatively large distance between it and the edge of the camera bracket 20, other embodiments may also have more first light-transmitting holes with relatively large distances between them and the edge of the camera bracket 20. The implementation process is similar to that of light-transmitting hole K3, and will not be described in detail here.

[0100] It should also be understood that Figure 11 The electronic devices shown can also be referenced. Figure 10 The scheme shown has a clearance hole 33 on the NFC antenna 30 to increase the number of cameras. This application embodiment does not specifically limit this.

Claims

1. An electronic device, characterized in that, include: Back cover; A camera bracket is disposed on the rear cover and includes a first surface and a second surface disposed opposite to each other; wherein the first surface of the camera bracket faces the outside of the electronic device; the camera bracket is provided with a first light-transmitting hole, which is used to be opposite to a first flash, a first sensor or a first camera; An NFC antenna is laid on the first surface of the camera bracket; Wherein, the first orthographic projection of the NFC antenna onto the first surface of the camera bracket falls within the first surface of the camera bracket and does not overlap with the first light-transmitting hole, so that the NFC antenna avoids the first light-transmitting hole; The number of the first light-transmitting holes is multiple, and the multiple first light-transmitting holes are arranged in a ring array on the camera bracket; The NFC antenna is provided with ferrite and metal traces running along the edge of the ferrite; the area of ​​the metal traces on the first orthographic projection is the trace projection area, and the trace projection area is annular; the first light-transmitting hole is located on the outer side of the annular area corresponding to the trace projection area. On the array path of the first light-transmitting aperture, two adjacent first light-transmitting apertures are respectively the first adjacent aperture and the second adjacent aperture; The NFC antenna has an extension region extending along a first direction, which is away from the geometric center of the first surface of the camera bracket and toward the space between the first adjacent hole and the second adjacent hole. The spacing between the first adjacent hole and the second adjacent hole in the array direction is greater than a third threshold, wherein the third threshold is at least three times the trace width of the metal trace; The portion of the metal trace located in the extended region includes a first trace and a second trace; both the first trace and the second trace extend in a second direction and pass through the position between the first adjacent hole and the second adjacent hole; The first trace and the second trace are spaced apart in a third direction, wherein the third direction is the array direction of the first adjacent hole and the second adjacent hole, and the second direction is perpendicular to the third direction.

2. The electronic device according to claim 1, characterized in that, The NFC has a clearance hole, and the area of ​​the clearance hole on the first orthographic projection is a clearance area. The clearance area is located on the inner side of the ring corresponding to the trace projection area. The camera bracket is also provided with a second light-transmitting hole, which overlaps with the avoidance area. The second light-transmitting hole is used to be opposite to a second flash, a second sensor, or a second camera.

3. The electronic device according to claim 1 or 2, characterized in that, It also includes decorative lenses; The edge of the first surface of the camera bracket is provided with an adhesive backing area, and the decorative lens is fixed to the first surface of the camera bracket by connecting with the adhesive backing area. The NFC antenna is disposed between the decorative lens and the first surface of the camera bracket, and the first orthographic projection and the adhesive area do not overlap.

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