CN112599959A

CN112599959A - Electronic equipment and shell thereof

Info

Publication number: CN112599959A
Application number: CN202011379011.7A
Authority: CN
Inventors: 路宝
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-04-02
Anticipated expiration: 2040-11-30
Also published as: CN112599959B; WO2022111053A1

Abstract

The present application relates to an electronic device and a housing thereof. The electronic equipment comprises a shell, a display screen and an antenna device. The display screen is arranged on one side of the shell, and the antenna device is integrated on the shell; the antenna device comprises a radiator and a feed point arranged on the radiator; the feed point is used for feeding excitation current into the radiator, and the excitation current forms a strong current area on the radiator; the radiator is provided with a vacant area, the vacant area is positioned on one side of the radiator facing the display screen, and at least part of the vacant area is positioned in the strong current area. In the electronic device, the radiator is provided with the vacant areas, and the vacant areas are at least partially positioned in the strong current areas, so that the electric field distribution of the radiator can be improved, the SAR hot spots of the antenna device can be offset and dispersed, and the SAR value of the antenna device is lower.

Description

Electronic equipment and shell thereof

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to an electronic device with an antenna apparatus and a housing thereof.

Background

With the development and progress of science and technology, the communication technology has been developed rapidly and sufficiently, and with the improvement of the communication technology, the popularization of intelligent electronic products has been improved to an unprecedented level, and more intelligent terminals or electronic devices become an indispensable part of the life of people, such as smart phones, smart bracelets, smart watches, smart televisions, computers and the like. Communication antennas are commonly provided in current electronic devices to meet the communication requirements of users. With the increasing demand for communication efficiency and types, the power of the antenna in the electronic device is also increasing at present, which results in the radiation effect of the antenna on the human body being larger, which will have adverse effect on the human body.

Disclosure of Invention

The embodiment of the application provides electronic equipment and a shell thereof.

In a first aspect, an embodiment of the present application provides an electronic device, which includes a housing, a display screen, and an antenna apparatus. The display screen is arranged on one side of the shell, and the antenna device is integrated on the shell; the antenna device comprises a radiator and a feed point arranged on the radiator; the feed point is used for feeding excitation current into the radiator, and the excitation current forms a strong current area on the radiator; the radiator is provided with a vacant area, the vacant area is positioned on one side of the radiator facing the display screen, and at least part of the vacant area is positioned in the strong current area.

In a second aspect, an embodiment of the present application provides a housing applied to an electronic device capable of wireless communication, where the housing includes a frame and a bearing portion connected to the frame; the frame is at least partially made of metal.

The frame is provided with a gap which divides the frame into a grounding part and an antenna part; the antenna part is provided with a feeding point for feeding an exciting current, the feeding point is arranged between the slot and the grounding part, the feeding point is used for feeding the exciting current into the antenna part, and the exciting current forms a strong current area on the antenna part. The antenna part is provided with a vacant area, at least part of the vacant area is located in the strong current area, and the vacant area is used for accommodating keys of the electronic equipment. The vacancy region is configured to flow an excitation current to a side away from the vacancy region.

In a third aspect, an embodiment of the present application provides an electronic device, which includes a main board, a key and the above housing, wherein the main board is disposed on the carrying portion, and the key is accommodated in the void area and electrically connected to the main board.

In the electronic device provided in the embodiment of the present application, the antenna apparatus includes a radiator and a feeding point disposed on the radiator, the feeding point is configured to feed an excitation current to the radiator, and the excitation current forms a strong current region on the radiator. The radiator is provided with the vacant area which can be a part of the radiator from which materials are removed, so that a gap or a through hole is formed in the radiator, and the vacant area is at least partially positioned in a strong current area of the radiator, so that the electric field distribution of the radiator can be improved, SAR hot spots of the antenna device are offset and dispersed, and the SAR value of the antenna device is lower. In a specific application example, when the antenna device is applied to an electronic device, the vacant region may be disposed on a side of the radiator generally facing a user, so that a current on the radiator is biased to a solid portion of the radiator, a current concentration point of the antenna device may be shifted to a certain extent, an electric field distribution of the antenna device is improved, and an SAR hot spot of the antenna device is shifted and dispersed therewith, thereby reducing an SAR value of the antenna device.

Drawings

In order to more clearly illustrate the technical solution of the application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of an antenna device provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of a structure of an antenna device according to an embodiment of the present application.

Fig. 3 is a schematic diagram of the antenna device shown in fig. 2 with structural dimensioning.

Fig. 4 is a simulation diagram of the near-field electric field distribution of the antenna device shown in fig. 2.

Fig. 5 is a schematic view of the radiation efficiency of the antenna device shown in fig. 2.

Fig. 6 is a schematic diagram of another structure of an antenna device according to an embodiment of the present application.

Fig. 7 is a schematic diagram of another structure of an antenna device according to an embodiment of the present application.

Fig. 8 is a schematic diagram of another structure of an antenna device according to an embodiment of the present application.

Fig. 9 is a schematic diagram of another structure of an antenna device according to an embodiment of the present application.

Fig. 10 is a schematic diagram of an electronic device provided in an embodiment of the present application.

Fig. 11 is a schematic diagram of the internal structure of the electronic device shown in fig. 7.

Fig. 12 is a partially exploded view of the electronic device shown in fig. 7.

Fig. 13 is an exploded view of a portion of another structure of the electronic device shown in fig. 7.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As used in embodiments herein, "electronic device" includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal", an "electronic apparatus", and/or an "electronic device". Examples of electronic devices include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; as well as conventional laptop and/or palmtop receivers, gaming consoles, or other electronic devices that include radiotelephone transceivers.

Electromagnetic wave energy absorptionThe Specific Absorption Rate (SAR) is generally referred to as an Absorption ratio or Absorption ratio, and refers to an electromagnetic wave energy Absorption ratio of an electronic device. The specific meanings are as follows: under the action of an external electromagnetic field, an induced electromagnetic field is generated in a human body, and because each organ of the human body is a lossy medium, the electromagnetic field in the human body generates induced current, so that the human body can absorb and dissipate electromagnetic energy, and the physical process is represented by SAR (synthetic aperture radar) in biological dosimetry. SAR means the electromagnetic power absorbed or consumed by a unit mass of human tissue, in units of W/kg, or mw/g. The expression formula is: SAR ═ sigma | Ei-²/2 ρ, wherein:

ei is the effective value of the electric field intensity in the cell tissue and is expressed by V/m;

sigma is the conductivity of human tissue and is expressed by S/m;

rho is the density of human tissue in kg/m³And (4) showing.

SAR in human tissue is proportional to the square of the electric field strength in the tissue and is determined by parameters of the incident electromagnetic field (such as frequency, intensity, direction and source of the electromagnetic field), the relative position of the target, the genetic characteristics of the typical tissue of the exposed human body, ground effects, and the environmental effects of the exposure. Safety standards for human exposure to electromagnetic waves are established in many countries and regions, such as the international standard, which is less than 2.0w/kg per 10 grams in the european standard and less than 1.6mw/g per gram in the U.S. standard.

The stronger the Total Radiation Power (TRP) of the antenna, the larger the SAR value caused by the TRP, and the mutually restricted relationship between SAR and TRP is formed. This relationship of restriction makes the electronic device have low SAR value under the condition of ensuring high required transmitting power. The currently used methods for reducing the SAR value mainly include the following methods: (1) the transmission power of the antenna is directly reduced to reduce the absorption of the human body to electromagnetic waves, but the reduction of the transmission power of the antenna hardly ensures the requirements of TRP, the TRP is too low, the communication quality is low, and the increasingly improved communication requirements on the market cannot be met generally; (2) the position of the antenna in the electronic equipment is arranged in the direction far away from the head of a user so as to reduce the absorption of the human body to electromagnetic waves, but the development trend of the electronic equipment is that the thickness is thinner and thinner at present, so that the space of the antenna is smaller and smaller, and the distance between the antenna and the head of the user is difficult to ensure; (3) the wave-absorbing material is attached near the antenna to reduce the absorption of the human body to the electromagnetic wave, but the space near the antenna is extremely small due to the structural design of the electronic equipment, so that the wave-absorbing material is difficult to attach, and the cost of the wave-absorbing material is high. It can be seen that, at present, there is no better scheme that can both reduce SAR of the antenna and reliably ensure TRP thereof.

Therefore, after a great deal of repeated research, the inventor of the present application finds that the SAR value of the antenna of the current electronic device is relatively large, mainly because the excitation current forms a strong current region on the radiator, and the current on the motherboard of the electronic device also generates a current peak, and the current peak on the motherboard and the current peak on the radiator of the antenna result in a relatively large SAR value of the antenna. In view of this, the inventors propose an electronic device of the present application. The electronic equipment comprises a shell, a display screen and an antenna device, wherein the display screen is arranged on one side of the shell; the antenna device is integrated in the shell; the antenna device comprises a radiator and a feed point arranged on the radiator. The feeding point is used for feeding an excitation current into the radiator, and the excitation current forms a strong current area on the radiator. The radiator is provided with a vacant area, the vacant area is positioned on one side of the radiator facing the display screen, and at least part of the vacant area is positioned in the strong current area.

In the electronic device, the antenna device includes a radiator and a feeding point disposed on the radiator, the feeding point is configured to feed an excitation current to the radiator, and the excitation current forms a strong current region on the radiator. The radiator is provided with the vacant area which is the part of the radiator where the material is removed, so that the radiator is provided with the gap or the through hole, and the vacant area is at least partially positioned in the strong current area of the radiator, so that the electric field distribution of the radiator can be improved, and the SAR hot spot of the antenna device can be deviated. In a specific application example, when the antenna device is applied to an electronic device, the vacant region may be disposed on a side of the radiator generally facing a user, so that a current on the radiator is biased to a solid portion of the radiator, a current concentration point of the antenna device may be shifted to a certain extent, an electric field distribution of the antenna device is improved, and an SAR hot spot of the antenna device is shifted and dispersed therewith, thereby reducing an SAR value of the antenna device.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to fig. 1, an antenna device 100 according to an embodiment of the present invention includes an antenna body 10 and a feed source 30 connected to the antenna body 10. The antenna body 10 is used for receiving and transmitting signals, and the feed source 30 is used for feeding current signals into the antenna body 10, so that the antenna body 10 can resonate to transmit signals. The feed 30 is adapted to be connected to and may be controlled by the motherboard of the electronic device.

In the present embodiment, the antenna body 10 includes a radiator 12 and a feeding point 14. The feeding point 14 is used to feed an excitation current to the radiator 12, and the excitation current forms a strong current region on the radiator, and in this specification, the "strong current region" is understood to mean a region in which a current density is greater than that of its periphery. For example, when the antenna body 10 transmits a signal, a current enters the radiator 12 from the feed source 30 through the feed point 14, and a high current region is formed near the feed point 14, and the high current region includes a point having a relatively high current (a point having a relatively high current density), so that an SAR hot spot exists at the feed point 14 of the radiator 12. In some embodiments, the antenna body may further include a ground point 16 disposed on the radiator 12, when the antenna body 10 receives a signal, the radiator 12 converts an electromagnetic wave signal into a current, the current flows back through the ground point 16, a strong current region is also formed near the ground point 16 of the radiator 12, and thus a SAR hot spot may also exist at the ground point 16. The presence of these SAR hotspots, especially when located close to the user, can adversely affect the body of the user using the antenna device.

In order to offset the SAR hot spot of the radiator 12 to reduce the adverse effect on the user, the radiator 12 of the embodiment of the present application is provided with a void region 121, the void region is at least partially located in the strong current region, and the void region 121 is a portion of the radiator 12 from which material is removed, so that a gap or a through hole is formed in the radiator 12, so as to improve the electric field distribution of the radiator 12 and thus offset the SAR hot spot of the antenna device 100. In a specific application example, when the antenna device 100 is applied to an electronic device, the vacancy area 121 may be disposed on a side of the radiator 12 generally facing a user, so that a current on the radiator 12 is biased to an inner space of a solid portion of the radiator 12, a current concentration point of the antenna device 100 may be shifted to a certain extent, and a SAR hot spot of the antenna device 100 is shifted and dispersed accordingly, thereby reducing a SAR value of the antenna device 100. Further, in some embodiments of the present application, the vacant area 121 may be disposed adjacent to the ground point 16, which can ensure that the radiation performance of the antenna device 100 is not impaired, and in other embodiments, the vacant area 121 may also be disposed adjacent to the feeding point 14. Therefore, the antenna device 100 provided in the embodiment of the present application can ensure a strong antenna radiation performance and has a low SAR value.

In the embodiment of the present application, the structure and the shape of the void region 121 are not limited, and it may be a via structure with any shape or a notch structure with any shape opened on the radiator 12. The void region 121 may be defined by a physical boundary of the radiator 12, or may be defined by a physical boundary of the radiator 12 and a reasonable extension of the physical boundary.

Referring to fig. 2, in some embodiments, the radiator 12 is substantially a strip-shaped sheet, and may include a first side 123, a second side 125, a third side 127, and a fourth side 129. The first side 123 is disposed opposite the second side 125, and the third side 127 is disposed opposite the fourth side 129. The third side 127 and the fourth side 129 are two ends of the radiator 12 in the length direction, and both are connected between the first side 123 and the second side 125, and the first side 123, the second side 125, the third side 127 and the fourth side 129 together form a solid outline of the radiator 12. In this embodiment, the feeding point 14 is disposed on the first side 123, so that the third side 127 can be used as the radiation end of the radiator 12. The ground point 16 may be disposed at an end of the first side 123 adjacent to the fourth side 129, or may be directly disposed at the fourth side 129, so that the fourth side 129 can serve as a ground terminal of the radiator 12.

In the present embodiment, the void region 121 is defined by the second side 125, and the void region 121 is disposed on a side of the second side 125 of the radiator 12 adjacent to the ground point 16, so that a strong current point near the ground point 16 is shifted toward the first side 127, and the SAR hot spots of the antenna device 100 are shifted and dispersed accordingly, thereby reducing the SAR value of the antenna device 100. In the present embodiment, the distance between the side of the second side 125 close to the third side 127 and the first side 123 is greater than the distance between the side of the second side 125 close to the fourth side 129 and the first side 123, and since the ground point 16 is disposed at the fourth side 129 or adjacent to the fourth side 129, the above distance relationship can be understood as: the distance between the end of the second side 125 close to the feeding point 14 and the first side 123 is greater than the distance between the end of the second side 125 close to the ground point 16 and the first side 123, so that the size (such as the width size or the area size per unit length) of the radiator 12 tends to decrease from the feeding point 14 to the ground point 16, and the size tends to decrease, so that the vacant region 121 is formed on the radiator 12 close to the ground point 16.

In the embodiment shown in fig. 2, the vacant area 121 is a notch structure opened on the radiator 12, and it is a substantially rectangular notch. Further, first side 123 extends substantially straight, and second side 125 includes a main sub-edge 1251, a connecting edge 1253, and a limiting edge 1255 connected in series, wherein main sub-edge 1251 is connected to third side 127, and limiting edge 1255 is connected to fourth side 129. The main sub-edge 1251 is substantially parallel to the first side edge 123, the connecting edge 1253 extends from one end of the main sub-edge towards the first side edge 123 and may be substantially perpendicular to the first side edge 123, the limiting edge 1255 is connected to an end of the connecting edge 1253 close to the first side edge 123 and is substantially parallel to the first side edge 123, such that the distance between the main sub-edge 1251 and the first side edge 123 is greater than the distance between the limiting edge 1255 and the first side edge 123, and the dimension (e.g., the width dimension or the area dimension per unit length) of the radiator 12 decreases from the main sub-edge 1251 to the limiting edge 1255, so that the void area 121 is defined by the connecting edge 1253 and the limiting edge 1255. Further, the area of absence 121 is jointly delimited by a reasonable extension 1252 of the main sub-edge 1251, by the connecting edge 1253, by the defining edge 1255 and by a reasonable extension 1291 of the fourth side edge 129.

In order to ensure that the setting of the vacancy area 121 has less influence on the radiation efficiency of the antenna device 100 and at the same time can achieve the effect of offsetting the SAR hot spot of the antenna device 100, the radiator 12 in the above embodiment may satisfy the following geometric constraint condition. Referring to fig. 3, since the empty region 121 is defined by the connecting edge 1253 and the limiting edge 1255, the size of the empty region 121 can be limited by limiting the size of the connecting edge 1253 and the limiting edge 1255. In the present embodiment, the length L1 of the connecting edge 1253 may be set to be greater than or equal to 1mm and less than or equal to 3mm, specifically, may be set to be 1.0 mm, 1.2mm, 1.4mm, 1.5mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.5mm, 2.8mm, 3.0mm, and the like. The length L1 of the connecting edge 1253 can also be understood as the distance between the main sub-edge 1251 and the defining edge 1255, i.e. the width dimension of the gap 121 in the figure. The length L2 of the defining edge 1255 may be set to be 10mm or more and 30mm or less, and specifically may be set to be 10m, 12mm, 14mm, 15mm, 18mm, 20mm, 22mm, 24mm, 25mm, 28mm, 30mm, or the like. The length L2 of the defining edge 1255 can also be understood as the distance between the main sub-edge 1251 and the ground point 16, i.e. the length dimension of the gap 121 in the figure. The above-mentioned length, width size through injecing vacancy district 121, can inject the area size of the partial excavation on the irradiator 12 and satisfy predetermined requirement, thereby avoid irradiator 12 to be excavated too big area and influence its radiant efficiency, also can avoid the area undersize of excavating to the skew effect of electric current strong point less, consequently, length, width size through injecing vacancy district 121, can guarantee that antenna device 100 compromises when higher radiant efficiency, its SAR hotspot is squinted, when using antenna device 100 to concrete electronic equipment, can set up antenna device 100 to the SAR hotspot that makes after the skew is far away from the user, thereby reduce antenna device 100 to the adverse effect of human body. It should be noted that, in the present specification, the term "length" in terms of "length dimension", "length direction", and the like is understood as a direction in which the radiation end of the radiator 12 extends (for example, a direction from the feed point 14 to the radiation end), and the term "width" in terms of "width dimension", "width direction", and the like is understood as a direction substantially perpendicular to the length.

Further, in the present embodiment, the vacant region 121 is disposed in the space defined between the feeding point 14 and the ground point 16. The distance between the end of the vacancy area 121 and the feed point 14 satisfies a predetermined distance range to prevent the vacancy area 121 from opening to the radiation end of the radiator 12 to affect the resonance point of the radiator 12. In the embodiment shown in fig. 3 in particular, the distance between the end of the vacancy area 121 and the feed point 14 can be understood as the distance D1 between the connecting edge 1253 and the feed point 14. The distance D1 between the connecting edge 1253 and the feeding point 14 in the extending direction of the radiation end of the radiator 12 may be set to be greater than or equal to 5mm and less than or equal to 20mm, and specifically may be set to be 5mm, 6mm, 7mm, 8mm, 10m, 12mm, 14mm, 15mm, 18mm, 20mm, and so on. Further, the distance between the end of the vacant area 121 and the radiation end of the radiator 12 should also satisfy a preset distance range to ensure that the position of the resonance point satisfies the actual requirement. In the present embodiment, the distance between the end of the vacant region 121 and the radiation end of the radiator 12 may be understood as a distance D2 between the connection edge 1253 and the radiation end (the third side 127) of the radiator 12. The distance D2 between the connecting edge 1253 and the radiation end (the third side 127) of the radiator 12 may be set to be greater than or equal to 10mm and less than or equal to 30mm, and specifically may be set to be 10m, 12mm, 14mm, 15mm, 18mm, 20mm, 22mm, 24mm, 25mm, 28mm, 30mm, or the like.

In some embodiments, in order to better adjust the impedance of each band of the antenna device 100 to reduce the effect of the plurality of null regions 121 on the resonant frequency, the antenna device 100 may further include a matching circuit module 50, and the matching circuit module 50 is connected between the feed source 30 and the feeding point 14. The matching circuit module 50 is used to assist in tuning the antenna body 10, and the matching circuit module 50 adjusts the impedance of each band, so that the band has better matching output, and the resonance frequency of the antenna device 100 can be prevented from shifting, thereby ensuring that the antenna device 100 has higher radiation performance. The matching circuit 30 may specifically include a PI-type matching circuit or a T-type matching circuit.

In the antenna device 100 according to the above embodiment of the present application, since the radiator 12 is provided with the void region 121, the void region 121 is a portion of the radiator 12 from which material is removed, so that a gap or a through hole is formed in the radiator 12, and the void region 121 is located in a strong current region formed by an excitation current on the radiator 12, it is possible to improve an electric field distribution of the radiator 12 and thereby shift the SAR hot spot of the antenna device 100. In a specific application example, when the antenna device 100 is applied to an electronic device, the void region 121 may be disposed on a side of the radiator 12 generally facing a user, so that a current on the radiator 12 is biased to a substantial portion of the radiator 12, a current concentration point of the antenna device 100 may be shifted to a certain extent, an electric field distribution of the antenna device 100 is improved, and SAR hot spots of the antenna device 100 are shifted and dispersed accordingly, thereby reducing an SAR value of the antenna device 100.

Specifically, referring to fig. 4, fig. 4 is a schematic diagram illustrating a simulation of the near-field electric field distribution of the antenna device 100 provided by the present application and a conventional antenna, which shows the electric field intensity radiated when the resonant frequency of the antenna device 100 is at 0.97GHZ and the corresponding SAR peak value, wherein the dashed line range a and the dashed line range B show areas with stronger electric field intensity, and in the dashed line range a and the dashed line range B, the darker color indicates the stronger electric field intensity, and the lighter color indicates the stronger electric field intensity. As shown in the left diagram of fig. 4, in the structure of the conventional radiator, the radiator does not have a vacancy area, and in the dashed line range a, the electric field intensity extremum and the electric field distribution range are significantly larger, which corresponds to the SAR value peak value of 2.4525W/kg; the right diagram in fig. 4 shows that in the structure of the radiator provided by the present application, the radiator 12 is provided with the vacant region 121, and at this time, in the dashed line range B, the electric field intensity extremum and the electric field distribution range are relatively small, which corresponds to an SAR value peak value of 1.87623W/kg, which is approximately 23% lower than that of the antenna structure of the conventional radiator. As can be seen, the antenna device 100 provided in the embodiment of the present application has a lower SAR value.

Referring to fig. 5, fig. 5 is a schematic diagram illustrating the radiation efficiency of a conventional antenna and the antenna device 100 according to some embodiments of the present disclosure, and it can be seen that the antenna efficiency of the antenna device 100 according to the embodiments of the present disclosure is not greatly changed compared to the antenna with the conventional radiator. Therefore, the antenna device 100 is provided with the void region 121, so that the current strong point of the radiator 12 can be shifted to a desired direction, the electric field distribution of the antenna device 100 is improved, the maximum radiation intensity of the electric field is relatively low, the average value of the overall radiation is not reduced, and the antenna device 100 still has high radiation efficiency.

In the embodiment of the present application, the shape of the vacant region 121 is not limited to the shape provided in the above embodiment.

Referring to fig. 6, in some embodiments, the void region 121 is substantially triangular. Further, in the embodiment shown in fig. 6, compared to the previous embodiment, the antenna device 100 may not have the connecting side 1253 of the previous embodiment, and directly connect one end of the limiting side 1255 to the main sub-side 1251 and the other end to the fourth side 129, so that the limiting side 1255 is disposed substantially obliquely, and the gap area 121 is defined by a reasonable extension 1252 of the main sub-side 1251, a reasonable extension 1291 of the limiting side 1255 and the fourth side 129, and is substantially triangular gap-shaped. At this time, the distance between the end of the second side 125 close to the feeding point 14 and the first side 123 gradually decreases along the direction close to the ground point 16, and the size (such as the width size or the area size per unit length) of the radiator 12 decreases from the feeding point 14 to the ground point 16, so that the vacancy area 121 is formed on the radiator 12 close to the ground point 16, which is beneficial to making the strong current point at the ground point 16 shift toward the predetermined direction (the direction away from the vacancy area 121).

In this embodiment, in order to ensure that the setting of the vacancy area 121 has a small influence on the radiation efficiency of the antenna device 100 and at the same time can achieve the effect of offsetting the SAR hot spot of the antenna device 100, the radiator 12 in this embodiment may also satisfy the above geometric constraint condition without conflict. For example, the distance L1 between the connection point of the defining edge 1255 and the main sub-edge 1251 and the first side edge 123 may be set to be greater than or equal to 1mm and less than or equal to 3mm, and specifically may be set to be 1.0 mm, 1.2mm, 1.4mm, 1.5mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.5mm, 2.8mm, 3.0mm, and the like. For another example, the distance L2 between the connection point of the limiting edge 1255 and the main sub-edge 1251 and the ground point 16 (the fourth side edge 129) may be set to be greater than or equal to 10mm and less than or equal to 30mm, and specifically may be set to be 10mm, 12mm, 14mm, 15mm, 18mm, 20mm, 22mm, 24mm, 25mm, 28mm, 30mm, and the like. For another example, the distance D1 between the limiting edge 1255 and the feeding point 16 may be set to be greater than or equal to 5mm and less than or equal to 20mm, and specifically may be set to be 5mm, 6mm, 7mm, 8mm, 10m, 12mm, 14mm, 15mm, 18mm, 20mm, or the like. As another example, the distance D2 between the connection point of the limiting edge 1255 and the main sub-edge 1251 and the third side 127 (the radiation end of the radiator 12) may be set to be greater than or equal to 10mm and less than or equal to 30mm, and specifically may be set to be 10mm, 12mm, 14mm, 15mm, 18mm, 20mm, 22mm, 24mm, 25mm, 28mm, 30mm, and the like.

The size of the void area 121 is limited, the size of the area of the hollowed part of the radiator 12 can be limited to meet the preset requirement, so that the radiator 12 is prevented from being too large hollowed to affect the radiation efficiency, and the hollowed area is also prevented from being too small to have a small offset effect on the current strong point, therefore, the length and the width of the void area 121 are limited, so that the antenna device 100 can be ensured to have high radiation efficiency, and the SAR hotspot is offset, when the antenna device 100 is applied to a specific electronic device, the antenna device 100 can be arranged to be far away from the user so that the SAR hotspot after offset is away from the user, and the adverse effect of the antenna device 100 on the human body is reduced.

Referring to fig. 7, in some embodiments, the void region 121 is substantially through-hole shaped. Further, in the embodiment shown in fig. 7, the second side 125 of the antenna device 100 may be a straight extension, or may have a structure that is inclined or bent as in the above embodiments, which is not limited in this application. In this embodiment, the vacant region 121 may be a through hole opened in the radiator 12 and disposed adjacent to the ground point 16, and the through hole may have a triangular shape, a rectangular shape, a circular shape, an elliptical shape, a polygonal shape, or other irregular holes.

In this embodiment, the vacancy area 121 is disposed in a space between the feeding point 14 and the grounding point 16 on the radiator 12, and can shunt current flowing back to the grounding point 16 on the radiator 12, and the current strong point of the radiator 12 at the grounding point 16 is approximately shunted into two current sub-strong points, so that the original SAR single hot point is approximately dispersed, and a weak SAR multi-hot point is formed, so that the total SAR value of the antenna device 100 is weak, the overall current of the antenna device 100 is not affected, and it can be ensured that the radiation performance of the antenna device 100 is not weakened, therefore, the antenna device 100 of this embodiment can ensure strong antenna radiation performance and has a low SAR value.

In this embodiment, in order to ensure that the setting of the vacancy area 121 has a small influence on the radiation efficiency of the antenna device 100 and at the same time can achieve the effect of offsetting the SAR hot spot of the antenna device 100, the radiator 12 in this embodiment may also satisfy the above geometric constraint condition without conflict. For example, the width dimension L1 of the void region 121 may be set to be 1mm or more and 3mm or less, and specifically may be set to be 1.0m, 1.2mm, 1.4mm, 1.5mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.5mm, 2.8mm, 3.0mm, or the like. The length L2 of the void region 121 may be set to be 10mm or more and 30mm or less, and specifically may be set to be 10m, 12mm, 14mm, 15mm, 18mm, 20mm, 22mm, 24mm, 25mm, 28mm, 30mm, or the like. Further, in the present embodiment, the void region 121 is opened on a portion of the radiator 12 close to the second side 125, and a distance between the void region 121 and the second side 125 is smaller than a distance between the void region 121 and the first side 123. The area 121 opens at a portion of the radiator 12 close to the ground point 16, and a distance between the area 121 and the ground point 16 is smaller than a distance between the area 121 and the feeding point 14. Further, in the extending direction of the radiation end of the radiator 12, the minimum distance D1 between the vacant region 121 and the feed point 14 is equal to or greater than 5mm and equal to or less than 20 mm.

Referring to fig. 8, in some embodiments, the void region 121 may also be located in a strong current region at the feeding point 14, that is, the void region 121 may be disposed adjacent to the feeding point 14. Based on the boundaries of the two ends of the void region 121, the radiator 12 may be divided into a first portion 1201, a second portion 1203 and a third portion 1205, and the first portion 1201 and the third portion 1205 are respectively connected to the two opposite ends of the second portion 1203. The feeding point 14 is disposed on the second portion 1203, the grounding point 16 is disposed on the third portion 1205, and the vacant region 121 can be disposed on the second portion 1203, and the area of the second portion 1203 is smaller than the area of the first portion 1201, or smaller than the area of the third portion 1205, so that the current flowing through the second portion 1205 is shifted, thereby improving the electric field distribution of the antenna apparatus 100. The shape and size parameters of the vacant area 121 in this embodiment may refer to the parameters given in the above embodiments without conflict, and this description is not repeated.

Of course, in other embodiments, as shown in fig. 9, two or more than two of the void regions 121 may be provided, where one of the void regions 121 may be disposed adjacent to the feeding point 14, and another one of the void regions 121 may be disposed adjacent to the grounding point 16, in this case, the plurality of void regions 121 may also be understood as a plurality of portions belonging to the void region of the whole radiator 12 — that is, at least a portion of the void regions on the radiator 12 is disposed adjacent to the feeding point 14, and another at least a portion is disposed adjacent to the grounding point 16, so that the plurality of void regions 121 may be respectively located in a plurality of strong current regions of the radiator 12, which can effectively improve the electric field distribution condition of the antenna device 100. Further, the size and shape parameters of the vacant areas 121 located in the third portion 1205 can refer to the parameters given in the above embodiments without conflict, for example, the distance between the vacant areas 121 located in the third portion 1205 and the feeding point 14 is greater than or equal to 5mm and less than or equal to 20mm, so as to avoid affecting the radiation performance of the antenna device 100.

Alternatively, in some embodiments, the void region 121 may extend from the feeding point 14 to the grounding point 16, and the void region 121 may cover a plurality of high current regions, that is, at least a portion of the void region 121 is located in the high current regions, so that the void region 121 is easy to shape while improving the electric field distribution of the antenna device 100.

In the antenna device provided in the embodiment of the present application, the radiator is provided with the vacancy area, and the vacancy area is located in the strong current area formed by the excitation current on the radiator, so that the current in the strong current area can be shifted, the electric field distribution condition of the antenna device is improved, the maximum radiation intensity of the electric field is relatively low, and the antenna device can have higher radiation efficiency.

Referring to fig. 8, an electronic device 400 is further provided in the embodiments of the present application, where the electronic device 400 may be, but is not limited to, an electronic device such as a mobile phone, a tablet computer, and a smart watch. The electronic device 400 of the present embodiment is described by taking a mobile phone as an example.

The electronic apparatus 400 includes a housing 1001, and a display screen 1003 and an antenna device 1004 provided on the housing 1001. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are simply used for convenience of description of the present application, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In this embodiment, the display screen 1003 generally includes a display panel, and may also include a circuit and the like for performing a touch operation on the display panel in response. The Display panel may be a Liquid Crystal Display (LCD) panel, and in some embodiments, the Display panel may also be a touch screen Display. In the description herein, references to the description of "one embodiment," "some embodiments," or "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, a schematic representation of terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Specifically, in the embodiment of the present application, the housing 1001 includes a rear shell 1010 and a middle frame 1011, and the rear shell 1010 and the display screen 1003 are respectively disposed on two opposite sides of the middle frame 1011.

Referring to fig. 9, the middle frame 1011 can be an integrally formed structure, which can be structurally divided into a supporting portion 1012 and a frame 1013 surrounding the supporting portion 1012. It should be understood that the designations of "carrying portion" and "frame" are merely provided for convenience of description, and the filled diagonal lines in the drawings are merely used for distinguishing and not for representing the actual structures of the two, and there may be no obvious boundary between the two, or two or more components may be assembled together, and the designations of "carrying portion" and "frame" should not limit the structure of the middle frame 1011. The supporting portion 1012 is used for supporting a part of the structure of the display 1003, and may also be used for supporting or mounting electronic components of the electronic device 40000, such as the main board 1005, the battery 1006, and the sensor module 1007, and the frame 1013 is connected to a periphery of the supporting portion 1012. Further, the frame 1013 is disposed around the periphery of the carrying part 1012 and protrudes with respect to the surface of the carrying part 1012, so that the two together form a space for accommodating the electronic component. In this embodiment, the display 1013 is disposed on the frame 1013, and the frame 1013, the rear case 1010 and the display 1003 together form an external appearance of the electronic device 400.

In this embodiment, the antenna device 1004 may be any one of the antenna devices 100 provided in the above embodiments, or may have a combination of any one or more features of the above antenna devices 100, and related features may refer to the foregoing embodiments, which are not described again in this embodiment. The antenna device 1004 is integrated in the housing 1001, for example, the antenna device 1004 may be disposed on the middle frame 1011 or disposed on the rear housing 1010, which is not limited in this specification. The antenna device 1004 of the present embodiment may include an antenna body 10 and a feed 30 connected to the antenna body 10, the antenna body 10 may include a radiator 12, a feed point 14 and a ground point 16, wherein the radiator 12 may have a void region 121, substantially the same as the antenna device 100 described above. The radiator 12 is disposed in the middle frame, the feed source 30 may be connected to the motherboard 1005, and the ground point 16 may be connected to at least one of the motherboard 1005, the carrier 1012, and the rear case 1010.

Further, in the embodiment shown in fig. 9, the frame 1013 is made of metal, and the antenna device 1004 is integrated with the frame 1013. In the present embodiment, the frame 1013 is provided with a slot 1014, the slot 1014 communicates with the outside and divides the frame 1013 into two parts, and the antenna device 1004 is integrated into one part of the frame 1013, wherein the radiation end of the radiator 12 is located at one side of the slot 1014. In this way, the metal frame 1013 is used as a part of the radiator of the antenna device 1004, which is beneficial to saving space in the electronic device 400, and also provides a larger clearance area for the antenna device 1004, which is beneficial to ensuring higher radiation efficiency.

In this embodiment, a gap is formed between the frame 1013 as the radiator 12 and the carrier 1013, and the gap is communicated with the gap 1014 to separate the radiator 12 and the carrier 1012 from each other, so as to prevent the carrier 1012 from affecting the resonance of the radiator 12. Further, a non-shielding body (not shown) made of non-metal (such as resin, etc.) having a characteristic of passing electromagnetic wave signals may be disposed in the slot 1014 to allow the antenna device 1004 to perform signal transmission. The outer surface of the non-shield is flush with the outer surface of the rim 1013 to ensure the integrity of the appearance of the electronic device 400.

In some embodiments, referring to fig. 10, the electronic device 400 may further include a key 1009, where the key 1009 serves as an input device of the electronic device 400, and is configured to receive an operation of a user to enable the electronic device 400 to execute a corresponding instruction. In this embodiment, the key 1009 is a side key, which is movably disposed on the frame 1013 and electrically connected to the main board 1005. Further, when the frame 1013 is used as the radiator 12 of the antenna apparatus 100, the void region 121 may be a key hole formed on the frame 1013, and the key 1009 may be movably accommodated in the void region 121, so that multiplexing of the key hole and the void region 121 is realized, and the preparation process flow and the structure of the frame 1013 can be simplified.

Further, the vacancy area 121 may be opened on a side of the frame 1013 close to the display screen 1003, so as to avoid a current strong point of the antenna apparatus 100 from being concentrated near the display screen 1003, thereby changing an electric field distribution of the antenna apparatus 100, and moving a current strong point offset value away from the direction of the display screen 1003, because the user generally faces the display screen 1003 towards a body of the user (e.g., the display screen 1003 faces a face of the user when answering a call or browsing content) when using the electronic device 400, the current on the radiator 12 is offset to a direction relatively away from the display screen 1003, that is, the SAR hot point of the antenna apparatus 1004 is offset to a direction relatively away from the display screen 1003, and thus, a radiation effect of the antenna apparatus 1004 on the user can be further reduced.

In this embodiment, the main board 1005 is disposed on the supporting portion 1012, and a certain distance is provided between the edge of the main board 1005 and the radiator 12, so as to ensure that the antenna device 1004 has a large clearance area, and the current concentration on the main board 1005 and the current concentration on the antenna device 1004 are dispersed as much as possible, so as to reduce the SAR value of the antenna device 1004 to a certain extent. In this embodiment, the distance between the board 1005 and the radiator 12 may be 1-5mm, for example, the distance between the board 1005 and the radiator may be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, and so on.

In other embodiments, the frame 1013 may be made of non-metal, and the antenna device 10 may be integrated with the frame 1013. For example, the frame 1013 may be made of plastic, resin, or other materials, and the radiator 12 of the antenna device 10 may be integrated with the frame 1013 by insert molding (e.g., the radiator 12 is integrally embedded inside the frame 1013), or may be integrated with the frame 1013 by attaching (e.g., the radiator 12 is attached to the surface of the frame 1013). Referring to fig. 11, in the present embodiment, the radiator 12 of the antenna device 1004 is substantially shaped like a sheet, and is disposed on the frame 1013 and substantially perpendicular to the plane of the display 1003. The void area 121 is disposed on a side of the frame 1013 close to the display screen 1003, so that the current on the radiator 12 can be shifted to a direction relatively far from the display screen 1003, that is, the SAR hot spot of the antenna device 1004 is dispersed to a direction relatively far from the display screen 1003, and the radiation effect of the antenna device 1004 on the user can be further reduced.

In the embodiment shown in fig. 11, the electronic device 400 may further include a key 1009, where the key 1009 serves as an input device of the electronic device 400, and is configured to receive an operation of a user to enable the electronic device 400 to execute a corresponding instruction. In this embodiment, the key 1009 is a side key, which is movably disposed on the frame 1013 and electrically connected to the main board 1005. The frame 1013 may further include a key hole 1008, and the key 1009 is accommodated in the key hole 1008. When the antenna device 1004 is integrated in the frame 1013, the position of the vacant region 121 approximately corresponds to the position of the key hole 1008, so that the antenna device 1004 can be fully laid out by utilizing the structure of the frame 1013 itself, which is beneficial to reducing the thickness of the frame 1013. Specifically, radiator 12 of antenna device 1004 may at least partially surround key hole 1008 such that the location of void region 121 substantially coincides with the location of key hole 1008.

In the antenna device provided in the above embodiments of the present application, the radiator is provided with the void region, and the void region is a material-removed portion of the radiator, so that a gap or a through hole is formed in the radiator, so as to improve electric field distribution of the radiator and offset an SAR hot spot of the antenna device. In a specific application example, when the antenna device is applied to an electronic device, the vacant region may be disposed on a side of the radiator generally facing a user, so that a current on the radiator is biased to an inner space of the solid portion of the radiator, and a current concentration point of the antenna device may be shifted to a certain extent, thereby improving electric field distribution of the antenna device, and SAR hot spots of the antenna device are shifted and dispersed therewith, thereby reducing an SAR value of the antenna device.

In addition, based on the structure of the housing of the electronic device, an embodiment of the application can also provide a housing of an electronic device and an electronic device having the housing, where the electronic device includes the housing and a display screen disposed on the housing. The shell comprises a frame and a bearing part connected to the frame, wherein the frame is at least partially made of metal and is approximately arranged at the edge of the bearing part. The frame is provided with a gap, the gap divides the frame into a grounding part and an antenna part, the antenna part is made of metal, the antenna part is provided with a feeding point for feeding in exciting current and a grounding point for returning the exciting current, the grounding point is relatively far away from the gap, and the feeding point is arranged between the gap and the grounding point. The feeding point is used for feeding an excitation current to the antenna section, the excitation current forming a strong excitation current region on the antenna section. A portion from the feeding point to the slot on the antenna section is configured to be a radiation end portion of an antenna of the electronic device, and a portion from the feeding point to the grounding point on the antenna section is configured to be a grounding end portion of the antenna of the electronic device. The grounding end part is provided with a vacant area, and the vacant area is at least partially positioned in the strong excitation current area. The vacant area is used for accommodating keys of the electronic equipment; the void region is configured such that the excitation current of the ground terminal portion flows to a side away from the void region to improve the electric field distribution of the antenna portion, and the SAR hot spot of the antenna portion is offset and dispersed therewith, thereby enabling to reduce the SAR value of the antenna device. This electronic equipment can also include mainboard and display screen, and the mainboard sets up in the portion of bearing, and the frame is located to the display screen lid, and the vacancy district sets up the one side that is close to the display screen on the frame, and the button holding is in the vacancy district to be connected with the mainboard electricity. It should be understood that the antenna portion of the housing of the electronic device provided in this embodiment may be any one of the antenna apparatuses provided in the above embodiments, or may include any one or more features of the above antenna apparatuses, the electronic device provided in this embodiment may be any one of the electronic devices provided in the above embodiments, or may include any one or more features of the above electronic devices in combination, and related features may refer to the foregoing embodiments, and are not described in detail in this embodiment.

It should be noted that, in the present specification, when an element is referred to as being "disposed on" another element, it can be directly connected to the other element or intervening elements may be present (i.e., indirectly connected to the other element); when a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present, i.e., there may be an indirect connection between the two components.

In this specification, particular features or characteristics described may be combined in any one or more embodiments or examples as appropriate. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An electronic device, comprising:

a housing;

the display screen is arranged on one side of the shell; and

an antenna device integrated with the housing; the antenna device comprises a radiator and a feed point arranged on the radiator, wherein the feed point is used for feeding excitation current into the radiator, and the excitation current forms a strong current area on the radiator; the radiator is provided with a vacant area, the vacant area is located on one side, facing the display screen, of the radiator, and at least part of the vacant area is located in the strong current area.

2. The electronic device of claim 1, wherein the radiator comprises a first portion and a second portion connected in sequence, the feeding point is disposed on the second portion, and the vacant region is at least partially located on the second portion.

3. The electronic device of claim 2, wherein the radiator further comprises a third portion, the third portion connected to the second portion; the antenna device further comprises a grounding point, the grounding point is arranged on the third portion, and the vacant area is at least partially located on the third portion.

4. The electronic device of claim 1, wherein the antenna device further comprises a ground point, and the radiator comprises a first portion, a second portion, and a third portion connected in series; the feeding point is arranged on the second part, the grounding point is arranged on the third part, and the vacant area is at least partially positioned on the third part.

5. The electronic device according to claim 4, wherein a distance between the vacancy area in the third portion and the feeding point is 5mm or more and 20mm or less.

6. The electronic device of claim 1, wherein the radiator includes a first side and a second side opposite to the first side, the second side being closer to the display screen than to the first side, the feed point being disposed at the first side; the vacancy area is a notch arranged on the second side edge.

7. The electronic device of claim 5, wherein the antenna assembly further comprises a ground point disposed on the first side; the distance between the second side and the first side decreases in a direction from the feeding point to the ground point, and the vacancy area is defined by a portion of the second side from the feeding point to the ground point.

8. The electronic device of claim 1, wherein the void region is a via opening in the radiator.

9. The electronic device according to any one of claims 1 to 8, wherein the housing includes a carrying portion and a frame connected to the carrying portion, and the display screen is connected to the frame or/and the carrying portion; the frame is provided with a gap, and the antenna device is integrated on the frame and positioned on one side of the gap.

10. The electronic device of claim 9, wherein the display screen is covered on the frame, the electronic device further comprising a key, the frame having a key hole, the key being movably received in the key hole; the radiator at least partially surrounds the periphery of the key hole, so that the position of the vacancy area is at least partially overlapped with the position of the key hole.

11. The electronic device of claim 10, further comprising a main board disposed on the carrier, wherein the radiator is attached to the bezel or embedded in the bezel; the radiator is electrically connected with the mainboard through the feed point.

12. The electronic device of claim 9, wherein the display screen is covered by the bezel, the bezel being at least partially made of metal; the feeding points are all arranged on the frame, so that the frame made of metal is configured into the radiating body to transmit or receive signals; the vacancy area is a hole formed in the frame, and the electronic equipment further comprises a key, wherein the key is accommodated in the vacancy area.

13. A shell is characterized by being applied to electronic equipment capable of carrying out wireless communication, and comprising a frame and a bearing part connected to the frame; the frame is at least partially made of metal;

the frame is provided with a gap which divides the frame into a grounding part and an antenna part; the antenna part is provided with a feeding point for feeding excitation current, the feeding point is arranged between the gap and the grounding part and is used for feeding the excitation current into the antenna part, and the excitation current forms a strong current area on the antenna part;

the antenna part is provided with a vacant area, at least part of the vacant area is positioned in the strong current area, and the vacant area is used for accommodating keys of the electronic equipment; the vacancy region is configured to cause the excitation current to flow to a side away from the vacancy region.

14. An electronic device, comprising a main board, a key and the housing of claim 13, wherein the main board is disposed on the supporting portion, and the key is accommodated in the void area and electrically connected to the main board.

15. The electronic device of claim 14, further comprising a display screen, wherein the display screen is covered by the bezel, and the vacant area is disposed on a side of the bezel near the display screen.