Electronic device

Abstract

The present disclosure provides an electronic device, comprising: a housing, a screen assembly, a conductive shield and a circuit board, the screen assembly is connected with the housing, and the screen assembly and the housing enclose a receiving cavity, the conductive shield and the circuit board are arranged in the receiving cavity respectively; the conductive shield is provided with a feeding point, the feeding point is electrically connected with the circuit board, and a cavity is formed by the conductive shield and the circuit board; the conductive shield comprises a top wall and a side wall, the side wall is provided with an opening for radiating signals, and the opening is arranged relative to a non-display area of the screen assembly.

Description

Technical Field

[0001] This disclosure relates to the field of electronic product technology, specifically to an electronic device. Background Technology

[0002] With the rapid development of communication technology, the functions of smart terminal devices are becoming increasingly powerful. Tablets, in particular, have experienced explosive growth in recent years. Along with the increasing demand for smart terminal devices, consumers are also placing higher demands on the user experience. Among these, appearance and communication experience are two crucial aspects, with consumers demanding higher communication quality and speed. Multi-frequency / wideband communication modules can enable users to enjoy better communication quality and faster speeds, allowing devices to support more connections and providing a better user experience. Designing communication systems with more frequency bands and wider bandwidth within highly integrated smart terminal devices is a consistent pursuit in the field of smart terminal communication. To enable terminal devices to have more frequency bands and wider bandwidth, antennas are usually added. However, due to the limited internal stacking space of terminal devices, existing devices often lack sufficient space to install the necessary additional antennas, thus failing to meet the requirements for increasing frequency bands and widening bandwidth. Summary of the Invention

[0003] This disclosure provides an electronic device that can increase the frequency band and widen the bandwidth of the electronic device.

[0004] This disclosure provides an electronic device, including a housing, a screen assembly, a conductive shield, and a circuit board. The screen assembly is connected to the housing, and the screen assembly and the housing enclose a cavity. The conductive shield and the circuit board are respectively disposed within the cavity. The conductive shielding cover is provided with a power supply point, which is electrically connected to the circuit board. The conductive shielding cover and the circuit board enclose each other to form a cavity. The conductive shielding cover includes a top wall and a side wall, the side wall having an opening for radiating signals, and the opening being positioned relative to the non-display area of ​​the screen assembly.

[0005] In this embodiment of the disclosure, by setting a feed point on the conductive shield and electrically connecting the circuit board to the feed point to form a cavity antenna, since the existing conductive shield inside the electronic device can be reused, a cavity antenna can be added inside the electronic device without increasing the antenna space, which is beneficial to increase the frequency band and widen the bandwidth of the electronic device. Attached Figure Description

[0006] Figure 1 This is one of the cross-sectional structural schematic diagrams of the electronic device provided in the embodiments of this disclosure; Figure 2 yes Figure 1 Top view; Figure 3 This is one of the top views of a cavity antenna; Figure 4 This is the second top view of a cavity antenna; Figure 5 This is one of the schematic diagrams of the internal structure of the electronic device provided in the embodiments of this disclosure; Figure 6 This is the third top view of a cavity antenna; Figure 7 This is a second schematic diagram of the internal structure of the electronic device provided in the embodiments of this disclosure; Figure 8 This is the fourth top view of a cavity antenna; Figure 9 This is a front view of a cavity antenna; Figure 10 This is the second schematic diagram of the cross-sectional structure of the electronic device provided in the embodiments of this disclosure; Figure 11 yes Figure 10 Top view; Figure 12 yes Figure 10 A top view of the central cavity from the front; Figure 13 This is a schematic diagram showing the projection direction of the cavity antenna opening. Figure 14 yes Figure 13 The left view; Figure 15 It is a graph of the simulation results. Detailed Implementation

[0007] The technical solutions of the embodiments of this disclosure will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure are within the scope of protection of this disclosure.

[0008] The terms "first," "second," etc., used in this disclosure and in the claims are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this disclosure can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0009] The electronic device provided in this disclosure will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0010] Please see Figures 1 to 14 , Figures 1 to 14 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. The electronic device includes: a housing 100, a screen assembly 200, a conductive shielding cover 320, and a circuit board 310. The screen assembly 200 is connected to the housing 100, and the screen assembly 200 and the housing 100 enclose a cavity 101. The conductive shielding cover 320 and the circuit board 310 are respectively disposed in the cavity 101. The conductive shield 320 is provided with a feed point 321, which is electrically connected to the circuit board. The conductive shield 320 and the circuit board 310 enclose a cavity, wherein the cavity formed by the conductive shield 320 and the circuit board 310 and the feed point together form a cavity antenna. The conductive shielding cover 320 includes a top wall 3201 and a side wall 3202. The side wall 3202 is provided with an opening 325 for radiating signals, and the opening 325 is positioned relative to the non-display area 210 of the screen assembly 200.

[0011] It is understood that the aforementioned conductive shielding cover 320 can form the radiator of the cavity antenna 300; please refer to [link to relevant documentation]. Figure 10 The conductive shielding cover 320 may include an opening 325 for radiating signals. It is understood that the other end faces of the cavity of the cavity antenna 300 are closed.

[0012] The aforementioned setting of the opening 325 relative to the non-display area 210 of the screen assembly 200 can specifically mean that the opening 325 is positioned facing the non-display area 210 of the screen assembly 200. Alternatively, the setting of the opening 325 relative to the non-display area 210 of the screen assembly 200 can also mean that the radiation area corresponding to the opening 325 is positioned opposite to the non-display area 210 of the screen assembly 200. Here, the radiation area corresponding to the opening 325 refers to the area covered inside the electronic device by the signal radiated by the cavity antenna 300 through the opening 325. For example, please refer to... Figure 4 In one embodiment of this disclosure, the rectangular region K outside the opening 325 can form a radiation region, that is, the range radiated outward from the opening 325 of the cavity antenna 300 can be regarded as the rectangular region K. In this way, the rectangular region K can be arranged opposite to the non-display area 210 of the screen assembly 200, so that the signal in the rectangular region K can be radiated outward through the non-display area 210.

[0013] The screen assembly 200 typically includes a stacked glass cover and a display module. The display module is slightly smaller than the glass cover. The glass cover includes a display area facing the display module and a non-display area 210 not facing the display module. The display area is used by the electronic device to display images. The non-display area 210 is located around the display area and is typically coated with ink, usually black, forming a black border area along the edge of the screen assembly 200. Therefore, the non-display area 210 can be a black border area located along the edge of the screen assembly 200. Thus, by positioning the opening 325 relative to the non-display area 210 of the screen assembly 200, the cavity antenna 300 can radiate outwards through the black border area of ​​the screen assembly 200, thereby improving the signal radiation effect of the cavity antenna 300.

[0014] The circuit board 310 described above can be an existing circuit board 310 in a reused electronic device. Alternatively, the circuit board 310 can be a newly added printed circuit board (PCB) in the electronic device. The circuit board 310 may include a power supply circuit, and the power supply point 321 is electrically connected to the power supply circuit of the circuit board, so that the power supply circuit can supply a power supply signal to the power supply point 321.

[0015] The aforementioned electronic devices can be various smart terminal devices in the relevant technology scenarios, such as mobile phones, tablets, laptops, etc.

[0016] In this embodiment, by setting a feed point 321 on the conductive shield 320 and electrically connecting the circuit board 310 to the feed point 321 to form a cavity antenna 300, since the existing conductive shield 320 inside the electronic device can be reused, a cavity antenna 300 can be added inside the electronic device without increasing the antenna space, which is beneficial to increasing the frequency band and widening the bandwidth of the electronic device.

[0017] Optionally, the conductive shielding cover 320 is further provided with a first tuning point 322, and the circuit board 310 includes a first tuning circuit, wherein the first tuning point 322 is grounded through the first tuning circuit; The top wall 3201 includes a first surface 329 disposed opposite to the circuit board 310. The side length of the first surface 329 matches the wavelength of the first frequency band. The first tuning point 322 is located on the first side of the first surface 329, and the distance between the first tuning point 322 and the end of the first side matches the wavelength of the second frequency band, which is different from the first frequency band. When the first frequency band feed signal is connected to the feed point 321, the first tuning circuit is in an open circuit state. When the second frequency band power supply signal is connected to the power supply point 321, the first tuning circuit is in the on state.

[0018] The first and second frequency bands can be any two of low-frequency, mid-frequency, and high-frequency bands. Alternatively, one of the first and second frequency bands can be a low-frequency band, and the other a mid-to-high-frequency band. Alternatively, the first frequency band can be a portion of the low-frequency band, and the second frequency band can be a portion of the high-frequency band. For example, in one embodiment of this disclosure, the first frequency band may include the Wi-Fi 2.4G band, and the second frequency band may include the Wi-Fi 5G band and the Wi-Fi 6E band. Thus, only a cavity antenna 300 needs to be installed in the electronic device to achieve full coverage of the Wi-Fi 2.4G, Wi-Fi 5G, and Wi-Fi 6E bands.

[0019] It is understood that the power supply circuit in the circuit board 310 can feed power signals of different frequency bands to the power supply point 321 in different operating modes.

[0020] The aforementioned first side can be one of the sides of the opening 325. Matching the side length of the first surface 329 with the wavelength of the first frequency band can mean that the dimensions of a portion of the sides of the first surface 329 match the wavelength of the first frequency band. For example, the side length of one side of the first surface 329 is one-quarter of the wavelength of the first frequency band, or the side length of one side of the first surface 329 is one-half of the wavelength of the first frequency band, etc. Furthermore, matching the side length of the first surface 329 with the wavelength of the first frequency band can mean that the dimensions of each side of the first surface 329 are respectively matched with the wavelength of the first frequency band. For example, the side length of each side of the first surface 329 is one-quarter of the wavelength of the first frequency band, or the side length of each side of the first surface 329 is one-half of the wavelength of the first frequency band, etc. Alternatively, the side length of a portion of the sides of the first surface 329 is one-quarter of the wavelength of the first frequency band, and the side length of another portion of the sides is one-half of the wavelength of the first frequency band. This ensures that the basic mode of the cavity antenna 300 can cover the first frequency band.

[0021] Accordingly, matching the distance between the first tuning point 322 and the end of the first side to the wavelength of the second frequency band can mean that the distance between the first tuning point 322 and the end of the first side is half the wavelength of the second frequency band, or that the distance between the first tuning point 322 and the end of the first side is one-quarter the wavelength of the second frequency band. This ensures that the basic mode of the cavity antenna 300 can cover the second frequency band.

[0022] The wavelength of the first frequency band mentioned above can refer to the equivalent medium wavelength of the first frequency band, and correspondingly, the wavelength of the second frequency band can refer to the equivalent medium wavelength of the second frequency band.

[0023] The aforementioned first tuning circuit can be a common tuning circuit in related technologies, for example, it can be an LC tuning circuit formed by a combination of capacitors and inductors. Specifically, when the first frequency band is a low-frequency band and the second frequency band is a high-frequency band, the first tuning circuit can include a capacitor. Since a capacitor has the characteristic of passing high frequencies and blocking low frequencies, it can achieve the following functions: when the feed point 321 is connected to the feed signal of the first frequency band, the first tuning circuit is in an open-circuit state; when the feed point 321 is connected to the feed signal of the second frequency band, the first tuning circuit is in a closed-circuit state. It is understood that the first tuning circuit may include other tuning devices in addition to the capacitor, for example, it may include other inductors or capacitors.

[0024] The first side can form one side of the opening 325. Alternatively, the first side can be a common side of the first surface 329 and the side where the opening 325 is located.

[0025] In this embodiment, since the side length of the first surface 329 of the conductive shield 320 matches the wavelength of the first frequency band, the basic mode of the cavity antenna 300 can radiate signals of the first frequency band. When the feed point 321 is connected to a feed signal of the second frequency band, the first tuning circuit is in a closed state. Therefore, when the feed point 321 is connected to a feed signal of the second frequency band, the first tuning point 322 forms a strong current grounding structure. Furthermore, since the distance between the first tuning point 322 and the end of the first side matches the wavelength of the second frequency band, the cavity antenna 300 can also radiate signals of the second frequency band. Moreover, when the feed point 321 is connected to a feed signal of the first frequency band, the first tuning circuit is in an open-circuit state. Therefore, the introduction of the first tuning point 322 will not affect the basic mode of the cavity antenna 300. In this way, the cavity antenna 300 can simultaneously cover both the first and second frequency bands, which is beneficial for increasing the frequency bands and widening the bandwidth of electronic devices.

[0026] Optionally, the second frequency band includes a first sub-frequency band and a second sub-frequency band, the distance between the first tuning point 322 and the first endpoint of the first side is half the wavelength in the first sub-frequency band, and the distance between the first tuning point 322 and the second endpoint of the first side is half the wavelength in the second sub-frequency band.

[0027] It is understood that the aforementioned first frequency band, first sub-frequency band, and second sub-frequency band are three different frequency bands. For example, the first frequency band may be a Wi-Fi 2.4G band, the first sub-frequency band may be a Wi-Fi 5G band, and the second sub-frequency band may be a Wi-Fi 6E band. Alternatively, the first frequency band may be the Wi-Fi 2.4G band, the first sub-frequency band may be the Wi-Fi 5.1G band within the Wi-Fi 5G band, and the second sub-frequency band may be the Wi-Fi 5.8G band within the Wi-Fi 6E band. For ease of understanding, the following example, where the first frequency band is the Wi-Fi 2.4G band, the first sub-frequency band is the Wi-Fi 5.1G band, and the second sub-frequency band is the Wi-Fi 5.8G band, will be used to further explain and illustrate the electronic device provided in this embodiment.

[0028] In this embodiment, since the distance between the first tuning point 322 and the first endpoint of the first side is half the wavelength of the first sub-frequency band, when the feed point 321 is connected to the feed signal of the first sub-frequency band, signal radiation can be achieved through the area between the first tuning point 322 and the first endpoint of the first side, thus achieving signal coverage of the first sub-frequency band. Correspondingly, since the distance between the first tuning point 322 and the second endpoint of the first side is half the wavelength of the second sub-frequency band, when the feed point 321 is connected to the feed signal of the second sub-frequency band, signal radiation can be achieved through the area between the first tuning point 322 and the second endpoint of the first side, thus achieving signal coverage of the second sub-frequency band. In this way, the cavity antenna 300 can simultaneously achieve coverage of the first frequency band, the first sub-frequency band, and the second sub-frequency band, which is beneficial for increasing the frequency bands and widening the bandwidth of electronic devices.

[0029] Optionally, the first surface 329 is a rectangular surface, and the first surface 329 also includes a second side adjacent to the first side, the length of the first side being half the wavelength of the first frequency band, and the length of the second side being one-quarter the wavelength of the first frequency band.

[0030] Specifically, please see Figure 4 In one embodiment of this disclosure, edge AD in the first surface 329 is the first edge, edge AF in the first surface 329 is the second edge, position point B in the first edge forms the power supply point 321, position point C in the first edge forms the power supply point 321, position point A in the first edge forms the first endpoint of the first edge, and position point D in the first edge forms the second endpoint of the first edge. Figure 4 In the diagram, AD in the x-direction represents the length of the cavity in the cavity antenna 300, and AF in the y-direction represents the width of the cavity. Since AD ​​is approximately λ / 2 of the Wi-Fi 2.4G band, a λ / 2 lateral mode in the x-direction can be formed. AF is approximately λ / 4 of the Wi-Fi 2.4G band, thus a λ / 4 longitudinal mode in the x-direction can be formed (λ is the equivalent dielectric wavelength of this band). This constitutes the basic mode TE1, 1 / 2 of the cavity antenna 300, which can achieve coverage of the Wi-Fi 2.4G band.

[0031] In the case where the cavity antenna 300 is designed with only a feed point 321 and does not include a first tuning point 322, when the cavity antenna 300 operates in the Wi-Fi 5G and Wi-Fi 6E bands, 3 / 2λ high-order modes are easily formed in the AD converter and 3 / 4λ high-order modes are easily formed in the AF converter. This creates an efficiency dip within the band, affecting antenna efficiency and bandwidth. This disclosure utilizes the feature of the circuit board 310 that allows for flexible addition of feed tuning positions, introducing a first tuning point 322 to construct an ultra-wideband mode for Wi-Fi 5G / 6E. Specifically, by adding a first tuning point 322 in the x-direction of the cavity aperture and electrically connecting the first tuning point 322 to the first tuning circuit, a strong current grounding structure can be formed for the Wi-Fi 5G and Wi-Fi 6E bands, controlling the Wi-Fi 5G and Wi-Fi 6E band modes in the x-direction of the aperture. Specifically, AC can form a Wi-Fi 5.8G λ / 2 mode, and CD can form a Wi-Fi 5.1G λ / 2 mode. Mode switching can also be achieved by appropriately adjusting the position of the first tuning point 322; that is, AC forms a Wi-Fi 5.1G λ / 2 mode, and CD forms a Wi-Fi 5.8G λ / 2 mode. The first tuning point 322 exhibits a small capacitance to 2.4G, allowing for aperture adjustment. Through the introduction of the first tuning point 322, the cavity antenna 300 can effectively cover the Wi-Fi 2.4G / Wi-Fi 5.1G / Wi-Fi 5.8G bands in terms of modes.

[0032] Optionally, the conductive shield 320 is further provided with at least one second tuning point 324, the at least one second tuning point 324 is located in the middle area of ​​the first surface 329, and the circuit board 310 further includes at least one second tuning circuit corresponding to the at least one second tuning point 324, and each second tuning point 324 is grounded through the corresponding second tuning circuit. When the feed point 321 is connected to the feed signal of the first frequency band, the at least one second tuning circuit is in an open circuit state. When the feed point 321 is connected to the feed signal of the second frequency band, the at least one second tuning circuit is in the on state, the cavity forms a quarter-wavelength mode along the direction of the second side, the second side is the side of the first surface 329 adjacent to the first side, and an electric wall 600 is formed inside the cavity antenna 300, the electric wall 600 and the cavity antenna 300 are separated into two different cavities, and the at least one second tuning point 324 is located on the side of the electric wall 600 facing the opening 325.

[0033] The aforementioned first surface 329 can be a rectangular surface. The middle region of the first surface 329 can refer to the intersection of the two diagonals of the first surface 329, or it can refer to the region where the axis of symmetry of the first surface 329 is located. Figure 3 As shown, the second side mentioned above can be edge AF.

[0034] The aforementioned second tuning circuit can be a common tuning circuit in related technologies, for example, it can be an LC tuning circuit formed by a combination of capacitors and inductors. Specifically, when the first frequency band is a low-frequency band and the second frequency band is a high-frequency band, the second tuning circuit can include a capacitor. Since a capacitor has the characteristic of passing high frequencies and blocking low frequencies, it can achieve the following functions: when the feed point 321 is connected to the feed signal of the first frequency band, the second tuning circuit is in an open-circuit state; when the feed point 321 is connected to the feed signal of the second frequency band, the second tuning circuit is in a closed-circuit state. It is understood that the second tuning circuit may include other tuning devices in addition to the capacitor, for example, it may include other inductors or capacitors.

[0035] In this embodiment, by introducing a second tuning point 324, the boundary conditions for Wi-Fi 5G and Wi-Fi 6E of the original cavity of the cavity antenna 300 can be changed. Specifically, a λ / 4 mode in the y-direction can be formed, and a mode such as... Figure 4 The traveling wave mode indicated by the hollow arrow has the second tuning point 324 located at... Figure 4 The location of point E. Specifically, before the introduction of the second tuning point 324, the region where point E is located is a strong electric field region for Wi-Fi 5G / Wi-Fi 6E (not necessarily the strongest electric field region). After introducing the second tuning point 324, it can be used to design an LC circuit or a small capacitor with low resistance, forming a λ / 4 mode in the y-direction (vertical). Simultaneously, it approximately forms a short circuit point for Wi-Fi 5G / Wi-Fi 6E in the x-direction where point E is located, creating a similar... Figure 4 The effect of the electric wall 600 is that, by reflecting the signal through the electric wall 600 along the direction indicated by the hollow arrow, a traveling wave mode similar to a waveguide can be formed, resulting in... Figure 15 The diagram shows the high-frequency ultra-wideband effect. Simultaneously, the second tuning point 324 is approximately open-circuited or presents a small capacitance to Wi-Fi 2.4G, allowing Wi-Fi 2.4G to still utilize the entire cavity space for resonance, thus avoiding spatial waste of low frequencies. One second tuning point 324 can be placed at the center of the x and y axes inside the cavity. Alternatively, two or more second tuning points 324 can be placed near the y-axis centerline.

[0036] Please see Figure 4Because an electric wall 600 is formed inside the cavity antenna 300, when the operating frequency band of the cavity antenna 300 is the second frequency band, the cavity of the cavity antenna 300 can be equivalent to the sub-cavity 500 shown in the dashed box inside the cavity antenna 300. That is, the electric wall 600 can reduce the size of the cavity actually in operation inside the cavity antenna 300. When the operating frequency band of the cavity antenna 300 is the first frequency band, the entire cavity inside the cavity antenna 300 is considered as the cavity of the cavity antenna 300.

[0037] In this implementation, regarding mode construction, Wi-Fi 2.4G is implemented using a traditional fundamental mode, which is a resonant mode. For Wi-Fi 5G and Wi-Fi 6E modes, the internal tuning point of the cavity is used to achieve low-impedance grounding tuning, changing the original cavity's boundary conditions. This results in an extremely narrow cavity design, constructing a traveling wave mode for Wi-Fi 5G and Wi-Fi 6E. In terms of manufacturing process, the circuit board 310 can be a common double-sided through-hole board made of common PP+fiberglass board material, with mature processing technology and low selection threshold; the through-hole double-sided board simplifies the production process, allowing for fast prototyping and delivery. The conductive shielding cover 320 and the circuit board 310 can be soldered using SMT, a mature process with stable quality, high yield, and good processing accuracy (within 0.02mm), which is beneficial for stable and consistent antenna performance. After the overall module is completed, it is easy to assemble and fix within the entire device, reducing costs while improving yield, antenna performance coverage, and consistency.

[0038] The above implementation method is then applied to the actual internal structure of the device. Based on the internal architecture and the location of the circuit board 310, the conductive shielding cover 320, circuit board 310, power supply point 321, first tuning point 322, and second tuning point 324 are pre-set accordingly, and a full-band Wi-Fi simulation is performed. For example... Figure 15 The image shown is a schematic diagram of the simulation results. Figure 15 As can be seen, in this embodiment of the electronic device, the cavity antenna 300 has a low-frequency fundamental mode resonant mode covering Wi-Fi 2.4G and a high-frequency similar traveling wave mode covering Wi-Fi 5G and Wi-Fi 6E, thus meeting the requirements of the entire frequency band.

[0039] Optionally, the opening 325 is opposite to the first sidewall 110 of the housing 100, and the area of ​​the first sidewall 110 opposite to the housing is a non-metallic area.

[0040] The outer casing 100, excluding the non-metallic areas, can be made of metal. The non-metallic areas can be made of various non-metallic materials used in the manufacture of electronic device casings, such as plastic.

[0041] In this embodiment, since the first target area opposite to the opening 325 is a non-metallic area, the signal radiated from the opening 325 can penetrate the first target area and radiate to the outside of the electronic device. Thus, the electronic device can radiate signals outward simultaneously through the non-display area 210 of the screen assembly 200 and the non-metallic area, thereby improving the signal radiation effect of the electronic device.

[0042] In another embodiment of this disclosure, the aforementioned non-metallic area may also be a metallic area. In this case, the outer casing 100 is made of all-metal material, which helps to improve the overall consistency of the appearance of the electronic device.

[0043] Optionally, the circuit board 310 includes a second surface 311 and a third surface 312 facing each other. The second surface 311 is disposed opposite to the first surface 329. The conductive shield 320 is located on one side of the second surface 311. The third surface 312 is attached to the outer shell 100, and the conductive shield 320 is electrically connected to the outer shell 100 through a through-hole in the circuit board 310.

[0044] The third surface 312 of the circuit board 310 can be fixedly connected to the inner wall of the housing 100.

[0045] In this embodiment, since the conductive shield 320 is electrically connected to the outer shell 100 through the via in the circuit board 310, the height of the cavity antenna 300 is the sum of the height of the conductive shield 320 and the height of the circuit board 310. This is beneficial to increase the antenna height of the cavity antenna 300 and the cavity volume of the cavity antenna 300, thereby improving the antenna performance of the cavity antenna 300.

[0046] Optionally, the electronic device further includes a battery assembly 700 disposed within the accommodating cavity 101, with a gap formed between the battery assembly 700 and the first sidewall 110 of the housing 100, the conductive shield 320 and the circuit board 310 respectively disposed within the gap, and the opening 325 of the conductive shield 320 facing the first sidewall 110.

[0047] Specifically, please see Figure 6 In one embodiment of this disclosure, the length relationship between the first side AD and the second side AF in the first surface 329 is: 2*AE≤AD≤4*AE. In this way, it can be ensured that the length of AF is approximately λ / 4 of the Wi-Fi 5G / Wi-Fi 6E band.

[0048] Please see Figure 5In one embodiment of this disclosure, the cavity antenna 300 may be provided only on one side of the battery assembly 700. See also... Figure 7 In another embodiment of this disclosure, one cavity antenna 300 may be provided on each side of the battery assembly 700.

[0049] The first sidewall 110 mentioned above can be any one of the two sidewalls of the electronic device when the electronic device is in portrait mode.

[0050] In this embodiment, by placing the conductive shielding cover 320 and the circuit board 310 within the gap, the cavity antenna 300 can be installed using the gap formed between the battery assembly 700 and the side wall of the housing 100, thereby achieving effective utilization of the internal space of the electronic device.

[0051] Optionally, the conductive shield 320 is electrically connected to the fourth surface 120 of the housing 100, the circuit board 310 is housed inside the conductive shield 320, and the fourth surface 120 is the surface of the housing facing the screen assembly 200.

[0052] Specifically, the conductive shielding cover 320 can be pressed together with the outer shell 100 by screws or laser welding, or the conductive shielding cover 320 and the outer shell 100 can be pressed together by peripheral plastic parts.

[0053] In this embodiment, since the conductive shield 320 is directly fixedly connected to the fourth surface 120 of the outer shell 100, and the circuit board 310 is located inside the conductive shield 320, it is beneficial to improve the overall structural reliability of the cavity antenna 300 compared with the above embodiment.

[0054] Optionally, conductive foam is filled in the gap between the conductive shield 320 and the outer shell 100.

[0055] In this embodiment, by filling the gap between the conductive shield 320 and the outer shell 100 with conductive foam, the sealing performance of the cavity antenna 300 is further improved.

[0056] Optionally, the conductive shield 320 further includes a first extension 326 and a second extension 327. The first extension 326 is a strip-shaped conductive portion extending toward the circuit board 310 from the feed point 321, and the second extension 327 is a strip-shaped conductive portion extending toward the circuit board 310 from the first tuning point 322. The power supply point 321 is electrically connected to the power supply circuit through the first extension 326, and the first tuning point 322 is electrically connected to the first tuning circuit through the second extension 327.

[0057] Please see Figure 3 , Figure 13 and Figure 14 The first extension 326 and the second extension 327 can each be a metal strip extending from the conductive shield 320 toward the circuit board 310. This allows the first extension 326 to extend to the terminal of the output end of the power supply circuit and to be soldered to that terminal, thus establishing an electrical connection between the power supply circuit and the power supply point 321. Correspondingly, the second extension 327 can extend to the terminal of one end of the first tuning circuit and can be soldered to that terminal, with the other end of the first tuning circuit grounded.

[0058] Please see Figures 13-14 In one embodiment of this disclosure, the conductive shield 320 may further include a fourth extension 313, which is a strip-shaped conductive portion extending toward the circuit board 310 from the second tuning point 324. The second tuning point 324 is electrically connected to the second tuning circuit through the fourth extension 313.

[0059] Optionally, the conductive shielding cover 320 is further provided with a support point 323. The power supply point 321, the first tuning circuit and the support point 323 are respectively arranged at intervals along the first side. The conductive shielding cover 320 also includes a third extension 328, which extends from the support point 323 to the circuit board 310.

[0060] In this embodiment, by further providing the third extension 328, the first extension 326, the second extension 327, the third extension 328 and the fourth extension 313 can respectively support different positions of the conductive shield 320, thereby improving the overall reliability of the cavity antenna 300 structure.

[0061] Optionally, the power supply circuit includes a first conductive spring, the first tuning circuit includes a second conductive spring, the power supply circuit is electrically connected to the power supply point 321 through the first conductive spring, and the first tuning circuit is electrically connected to the first tuning point 322 through the second conductive spring.

[0062] Specifically, in the above embodiments, forming the first extension 326, the second extension 327, the third extension 328, and the fourth extension 313 typically requires bending the metal strip in the conductive shield 320. This results in stress at the connection between the extensions and the first surface 329 of the conductive shield 320, potentially reducing the stability of the electrical connection between the extensions and their corresponding terminals. Therefore, in another embodiment of this disclosure, the extensions are omitted. Instead, conductive springs in the circuit board 310 are used to electrically connect to corresponding points in the conductive shield 320. This improves the stability of the electrical connections between the components of the cavity antenna 300.

[0063] It is understood that the aforementioned first conductive spring can be a spring protruding from the first surface 329 of the conductive shield 320 in the circuit board 310, and the first conductive spring can directly contact the feed point 321 to achieve an electrical connection between the feed circuit and the feed point 321. Correspondingly, the second conductive spring can be a spring protruding from the first surface 329 of the conductive shield 320 in the circuit board 310, and the second conductive spring can directly contact the first tuning point 322 to achieve an electrical connection between the first tuning circuit and the first tuning point 322.

[0064] In addition, the second tuning circuit may also include a third conductive spring, which may be a spring protruding on the side of the first surface 329 of the conductive shield 320 in the circuit board 310, and the third conductive spring may directly contact the second tuning point 324 to realize the electrical connection between the second tuning circuit and the second tuning point 324.

[0065] Optionally, the electronic device further includes a metal plate 800 and a conductive foil 900. The metal plate 800 is attached to the conductive shielding cover 320 and covers the locations of the power supply point 321 and the first tuning point 322. The metal plate 800 is fixedly connected to the conductive shielding cover 320, and the conductive foil 900 is disposed between the metal plate 800 and the conductive shielding cover 320.

[0066] The conductive foil 900 can be any type of metal foil, such as copper foil, tin foil, etc.

[0067] Specifically, since the material of the conductive shield 320 is usually relatively soft, the conductive shield 320 may be deformed under the pushing action of the spring in the circuit board 310, which may lead to poor stability of the electrical connection between the spring in the circuit board 310 and the corresponding point of the conductive shield 320.

[0068] Please see Figure 8 and Figure 9 In one embodiment of this disclosure, the metal plate 800 and the conductive foil 900 may be located on the side of the conductive shield 320 facing away from the circuit board 310. Since the metal plate 800 can strengthen the structure at the locations of the feed point 321 and the first tuning point 322, it can prevent the spring in the circuit board 310 from pushing and causing deformation of the area covered by the metal plate 800, thereby improving the stability of the electrical connection between the spring in the circuit board 310 and the corresponding points of the conductive shield 320.

[0069] Furthermore, in another embodiment of this disclosure, the metal plate 800 and the conductive foil 900 may also be located between the first surface 329 of the conductive shield 320 and the circuit board 310. In this case, the spring contacts in the circuit board 310 can be electrically connected to corresponding points in the conductive shield 320 through the metal plate 800 and the conductive foil 900 in sequence. It is understood that the metal plate 800 may include a first annular insulating region, a second annular insulating region, and a third annular insulating region. The internal conductive region of the first annular insulating region is opposite to the feed point 321, the internal conductive region of the second annular insulating region is opposite to the first tuning point 322, and the internal conductive region of the third annular insulating region is opposite to the second tuning point 324. In this way, relative isolation can be achieved between the spring contacts in the circuit board 310 and other points besides the corresponding points.

[0070] In this embodiment, by connecting the metal plate 800 to the conductive shielding cover 320, the structure of the conductive shielding cover 320 can be strengthened, thereby improving the stability of the electrical connection between the internal components of the cavity antenna 300. Furthermore, by filling the gap between the metal plate 800 and the conductive shielding cover 320 with conductive foil 900, the sealing performance of the cavity can be further improved.

[0071] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this disclosure is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0072] The embodiments of this disclosure have been described above with reference to the accompanying drawings. However, this disclosure is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this disclosure without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this disclosure.

Claims

1. An electronic device, comprising: The device includes a housing, a screen assembly, a conductive shield, and a circuit board. The screen assembly is connected to the housing, and the screen assembly and the housing enclose a cavity. The conductive shield and the circuit board are respectively disposed within the cavity. The conductive shielding cover is provided with a power supply point, which is electrically connected to the circuit board. The conductive shielding cover and the circuit board enclose each other to form a cavity. The conductive shielding cover includes a top wall and a side wall, the side wall having an opening for radiating signals, and the opening being positioned relative to the non-display area of ​​the screen assembly; The conductive shield is also provided with a first tuning point, the circuit board includes a first tuning circuit, the first tuning point is grounded through the first tuning circuit, and the first tuning point and the feed point are located at different positions on the conductive shield. The top wall includes a first surface disposed opposite to the circuit board, the side length of the first surface is matched with the wavelength of a first frequency band, the first tuning point is located on the first side of the first surface, and the distance between the first tuning point and the end of the first side is matched with the wavelength of a second frequency band, which is different from the first frequency band. When the first frequency band feed signal is connected to the feed point, the first tuning circuit is in an open circuit state. When the feed point is connected to the feed signal of the second frequency band, the first tuning circuit is in the on state.

2. The electronic device of claim 1, wherein, The second frequency band includes a first sub-frequency band and a second sub-frequency band. The distance between the first tuning point and the first endpoint of the first side is half the wavelength in the first sub-frequency band, and the distance between the first tuning point and the second endpoint of the first side is half the wavelength in the second sub-frequency band.

3. The electronic device of claim 2, wherein, The first surface is a rectangular surface, and the first surface also includes a second side adjacent to the first side. The length of the first side is half the wavelength of the first frequency band, and the length of the second side is one-quarter the wavelength of the first frequency band.

4. The electronic device of claim 2, wherein, The conductive shielding cover is also provided with at least one second tuning point, which is located in the middle area of ​​the first surface. The circuit board also includes at least one second tuning circuit corresponding to each of the at least one second tuning point, and each second tuning point is grounded through its corresponding second tuning circuit. When the feed point is connected to the feed signal of the first frequency band, the at least one second tuning circuit is in an open circuit state. When the feed point is connected to the feed signal of the second frequency band, the at least one second tuning circuit is in the on state, and the cavity forms a quarter-wavelength mode along the direction of the second side, the second side being the side of the first surface adjacent to the first side.

5. The electronic device of claim 2, wherein, The opening is opposite to the first sidewall of the outer casing, and the area of ​​the first sidewall opposite to the outer casing is a non-metallic area.

6. The electronic device according to any one of claims 1 to 5, characterized in that, The circuit board includes a second surface and a third surface facing away from each other, the second surface being disposed opposite to the first surface, and the conductive shielding cover being located on one side of the second surface.

7. The electronic device according to any one of claims 1 to 5, characterized in that, The electronic device further includes a battery assembly disposed within the accommodating cavity, with a gap formed between the battery assembly and the first sidewall of the housing. The conductive shield and the circuit board are respectively disposed within the gap, and the opening on the first surface faces the first sidewall.

8. The electronic device according to any one of claims 1 to 5, characterized in that, The conductive shield is electrically connected to the fourth surface of the housing, the circuit board is housed inside the conductive shield, and the fourth surface is the surface of the housing facing the screen assembly.

9. The electronic device according to any one of claims 1 to 5, characterized in that, The circuit board also includes a power supply circuit, and the conductive shielding cover also includes a first extension and a second extension. The power supply point is electrically connected to the power supply circuit through the first extension, and the first tuning point is electrically connected to the first tuning circuit through the second extension.

10. The electronic device according to any one of claims 1 to 5, characterized in that, The circuit board also includes a power supply circuit, which includes a first conductive spring and a second conductive spring. The power supply circuit is electrically connected to the power supply point through the first conductive spring, and the first tuning circuit is electrically connected to the first tuning point through the second conductive spring.

11. The electronic device according to claim 10, characterized in that, The electronic device further includes a metal plate and a conductive foil. The metal plate is attached to the conductive shield and covers the location of the power supply point and the first tuning point. The metal plate is fixedly connected to the conductive shield and the conductive foil is disposed between the metal plate and the conductive shield.

12. The electronic device according to any one of claims 1 to 5, characterized in that, The outer casing is a conductive casing.

13. The electronic device according to any one of claims 1 to 5, characterized in that, The non-display area is located at the edge of the screen assembly.

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