Mobile terminal

Abstract

The application discloses a mobile terminal, which comprises a shell, a display screen, a mainboard, an antenna structure, a first conductive structure and a second conductive structure. The shell has a first side and a second side opposite to each other along a first direction. The display screen is connected with the shell and located on the first side of the shell. The mainboard is arranged in the shell and electrically connected with the display screen. The antenna structure is arranged in the shell and has a feeding end and a grounding end, which are electrically connected with the mainboard. The first conductive structure is arranged in the shell and electrically connected with the mainboard. The second conductive structure is arranged in the shell and located on the second side of the shell. The second conductive structure is farther away from the first side of the shell than the antenna structure in the first direction. The second conductive structure is spaced apart from and insulated from the first conductive structure in the first direction to form a capacitor. The application can reduce the loss of electromagnetic waves radiated by the antenna structure and improve the radiation efficiency of the antenna structure.

Description

Technical Field

[0001] This invention relates to the field of communication equipment technology, and more particularly to a mobile terminal. Background Technology

[0002] Mobile terminals typically possess communication functions, such as making calls, location tracking, and interconnecting with other mobile terminals. These functions all require antennas to radiate electromagnetic waves. However, when a user holds a mobile terminal (such as a smartphone or tablet) or wears a mobile terminal (such as a watch or fitness tracker), a horizontal electric field (parallel to the user's skin) exists between the antenna and the user's skin within the electric field generated by the antenna. This horizontal electric field generates a current on the user's skin, resulting in energy loss. This means that some of the electromagnetic waves radiated by the antenna are lost, leading to a reduction in the antenna's radiation efficiency. Consequently, this can result in problems such as decreased signal strength, shortened communication distance, and reduced data transmission speed. Summary of the Invention

[0003] This invention discloses a mobile terminal that can reduce the loss of electromagnetic waves radiated by the antenna structure, thereby improving the radiation efficiency of the antenna structure.

[0004] To achieve the above objectives, in a first aspect, the present invention discloses a mobile terminal, comprising:

[0005] A housing having a first side and a second side opposite each other along a first direction;

[0006] A display screen is connected to the housing, and the display screen is located on a first side of the housing;

[0007] The motherboard is located inside the housing and is electrically connected to the display screen;

[0008] An antenna structure is disposed in the housing, the antenna structure having a feed terminal and a ground terminal, the feed terminal and the ground terminal being respectively connected to the main board;

[0009] A first conductive structure is disposed inside the housing, and the first conductive structure is electrically connected to the motherboard;

[0010] A second conductive structure is disposed on the housing and located on the second side of the housing. The second conductive structure is further away from the first side of the housing relative to the antenna structure in the first direction. The second conductive structure and the first conductive structure are spaced apart and insulated from each other in the first direction to form a capacitor.

[0011] As an alternative implementation, the battery of the mobile terminal is at least partially configured as the first conductive structure, and the motherboard is located between the display screen and the battery along the first direction.

[0012] Secondly, the present invention also discloses a mobile terminal, comprising:

[0013] A housing having a first side and a second side opposite each other along a first direction;

[0014] The display screen is housed within the housing, and the motherboard is electrically connected to the display screen;

[0015] The motherboard is located inside the housing and is electrically connected to the display screen;

[0016] An antenna structure is disposed in the housing, the antenna structure having a feed terminal and a ground terminal, the feed terminal and the ground terminal being respectively connected to the main board;

[0017] A first conductive structure is disposed within the housing;

[0018] A second conductive structure is disposed on the housing and located on the second side of the housing. The second conductive structure is further away from the first side of the housing relative to the antenna structure in the first direction. The second conductive structure and the first conductive structure are spaced apart and insulated from each other in the first direction to form a capacitor.

[0019] The motherboard is at least partially constructed as the first conductive structure.

[0020] As an optional implementation, the antenna structure is located on one side of the motherboard in the second direction, and the antenna structure is located on the side of the motherboard opposite to the second side;

[0021] The second direction is perpendicular to the first direction.

[0022] As an optional implementation, the second conductive structure is disposed outside the housing, the housing including a top shell and a bottom shell that are connected to each other, the top shell having the first side, the bottom shell having the second side, and the bottom shell being made of an insulating material so that the second conductive structure is insulated from the first conductive structure.

[0023] As an optional implementation, the mobile terminal further includes a base, and the bottom shell is movably connected to the base so that the bottom shell can be flipped relative to the base;

[0024] The base is at least partially constructed as the second conductive structure.

[0025] As an optional implementation, the base includes a support plate and a conductive plate, the bottom shell is movably connected to the support plate, and the conductive plate is configured as the second conductive structure;

[0026] The conductive plate is disposed inside the support plate, or the conductive plate is disposed on the side of the support plate away from the bottom shell, or the conductive plate is disposed on the side of the support plate facing the bottom shell.

[0027] As an optional implementation, the carrier plate has a first hollow portion in the middle, and the conductive plate has a second hollow portion in the middle corresponding to the first hollow portion.

[0028] As an optional implementation, the second conductive structure is disposed outside the housing, the housing including a top shell and a bottom shell that are connected to each other, the top shell having the first side and the bottom shell having the second side;

[0029] The mobile terminal also includes a base, which includes a support plate and a conductive plate. The bottom shell is movably connected to the support plate, and the conductive plate is disposed inside the support plate, or the conductive plate is disposed on the side of the support plate away from the bottom shell.

[0030] The conductive plate is configured as the second conductive structure, and the carrier plate is configured as an insulating material to insulate the second conductive structure from the first conductive structure.

[0031] As an optional implementation, the carrier plate is made of plastic and the conductive plate is made of metal.

[0032] As an optional implementation, the distance between the second conductive structure and the first conductive structure in the first direction is D, where D satisfies: 3mm≤D≤5mm.

[0033] As an optional implementation, the antenna structure extends along a third direction, and in this third direction, the size of the antenna structure corresponds to 1 / 4 of the operating wavelength of the antenna structure.

[0034] The third direction is perpendicular to the first direction.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] The mobile terminal provided in this embodiment of the invention, by setting a first conductive structure and a second conductive structure, the first conductive structure and the second conductive structure are spaced apart and insulated in a first direction. When the motherboard supplies power to the first conductive structure, a capacitor is formed between the first conductive structure and the second conductive structure due to the voltage difference. The electric field generated by the capacitor can reduce the proportion of the horizontal electric field between the antenna structure and the user's skin, while increasing the proportion of the vertical electric field. This can reduce the occurrence of current generated by the horizontal electric field on the user's skin, thereby reducing the loss of electromagnetic waves radiated by the antenna structure and improving the radiation efficiency of the antenna structure. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the electric field distribution of a mobile terminal in related technologies;

[0039] Figure 2 This is a schematic diagram of the electric field distribution of the mobile terminal disclosed in the embodiments of this application;

[0040] Figure 3 This is a three-dimensional structural diagram of the mobile terminal disclosed in the embodiments of this application;

[0041] Figure 4 This is a schematic diagram of the structure of the mobile terminal disclosed in the embodiments of this application;

[0042] Figure 5 yes Figure 4 Sectional view in the AA direction;

[0043] Figure 6 yes Figure 4 Sectional view in the BB direction;

[0044] Figure 7 This is a schematic diagram of a motherboard, antenna structure, battery and conductive board disclosed in an embodiment of this application;

[0045] Figure 8 This is another structural schematic diagram of the motherboard, antenna structure, battery and conductive board disclosed in the embodiments of this application;

[0046] Figure 9 This is a schematic diagram of the structure of the motherboard, antenna structure, battery, first conductive structure and conductive plate disclosed in the embodiments of this application;

[0047] Figure 10 This is a three-dimensional structural diagram of the base disclosed in the embodiments of this application;

[0048] Figure 11 yes Figure 10 Sectional view in the CC direction;

[0049] Figure 12 This is a simplified schematic diagram of the antenna structure and the second conductive structure disclosed in the embodiments of this application;

[0050] Figure 13This is a simulation diagram of the functional relationship between the operating frequency and reflection coefficient of a mobile terminal in the relevant technology and the mobile terminal disclosed in the embodiments of this application;

[0051] Figure 14 This is a simulation diagram of the functional relationship between the operating frequency and radiation efficiency of a mobile terminal based on related technologies and embodiments of this application.

[0052] Figure 15 The simulation diagram shows the functional relationship between the operating frequency and reflection coefficient of the mobile terminal and the two mobile terminals (simplified models) disclosed in the embodiments of this application, which are related technologies.

[0053] Figure 16 The simulation diagram shows the functional relationship between the operating frequency and radiation efficiency of mobile terminals in related technologies and two simplified models of mobile terminals disclosed in the embodiments of this application.

[0054] Icon: 1. Mobile terminal;

[0055] 10. Shell; 10a. Top shell; 10b. Bottom shell; 100. Bottom cover; 101. Middle frame; 102. First side; 103. Second side;

[0056] 11. Display screen;

[0057] 12. Motherboard;

[0058] 13. Antenna structure;

[0059] 14. Battery;

[0060] 15. Base support; 15a. Support plate; 150. First hollow section; 15b. Conductive plate; 151. Second hollow section;

[0061] 16. First conductive structure;

[0062] 17. Second conductive structure; 170. Outer edge; 171. Inner edge;

[0063] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0064] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] Mobile terminals typically possess communication functions, such as making calls, location tracking, and interconnecting with other mobile terminals. These functions require antennas to radiate electromagnetic waves. However, when a user holds a mobile terminal (such as a smartphone or tablet) or wears a mobile terminal (such as a watch or fitness tracker), a horizontal electric field (parallel to the user's skin) exists between the antenna and the user's skin within the electric field generated by the antenna. For example, ... Figure 1 As shown, the horizontal arrow in the circle represents the horizontal electric field between the user's skin and the antenna. The horizontal electric field generates current on the user's skin, resulting in energy loss. This means that some of the electromagnetic waves radiated by the antenna are lost, which reduces the antenna's radiation efficiency. Consequently, this may lead to problems such as decreased signal strength, shortened communication distance, and reduced data transmission speed.

[0066] Based on this, the inventor designed a mobile terminal by setting a first conductive structure and a second conductive structure, which are spaced apart and insulated from each other in a first direction. When the motherboard supplies power to the first conductive structure, a capacitor is formed between the first and second conductive structures due to the voltage difference. Figure 2 As shown, the vertical arrow in the circle represents the vertical electric field between the user's skin and the antenna. The electric field generated by the capacitor can reduce the proportion of the horizontal electric field between the antenna structure and the user's skin, while increasing the proportion of the vertical electric field. This reduces the occurrence of current generated by the horizontal electric field on the user's skin, thereby reducing the loss of electromagnetic waves radiated by the antenna structure and improving the radiation efficiency of the antenna structure.

[0067] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0068] Please refer to the following: Figures 3 to 6 This invention provides a mobile terminal 1, which includes a housing 10, a display screen 11, a motherboard 12, and an antenna structure 13. The housing 10 has a first side 102 and a second side 103 opposite each other along a first direction X. The display screen 11 is connected to the housing 10 and is located on the first side 102 of the housing 10. The motherboard 12 is disposed inside the housing 10 and electrically connected to the display screen 11. The antenna structure 13 is disposed on the housing 10.

[0069] Optionally, the antenna structure 13 has a feed terminal and a ground terminal, which are respectively connected to the main board 12.

[0070] Optionally, the mobile terminal 1 includes a first conductive structure 16, which is disposed inside the housing 10 and electrically connected to the motherboard 12.

[0071] Optionally, the mobile terminal 1 includes a second conductive structure 17. The second conductive structure 17 is disposed on the housing 10 and located on the second side 103 of the housing 10. The second conductive structure 17 is further away from the first side 102 of the housing 10 relative to the antenna structure 13 in the first direction X; that is, the second conductive structure 17 is further away from the top of the housing 10 compared to the antenna structure 13. The second conductive structure 17 is spaced apart from and insulated from the first conductive structure 16 in the first direction X to form a capacitor.

[0072] It is understood that the mobile terminal 1 mentioned above in this application may include, but is not limited to, electronic devices such as mobile phones, smartwatches, smart bracelets or smart glasses that have communication functions and need to come into contact with the user's skin when in use. The specific device can be selected according to the actual situation, and no specific limitation is made in this embodiment.

[0073] It is understood that the aforementioned housing 10 can be used to house components such as the display screen 11 and motherboard 12 of the mobile terminal 1. The display screen 11 is used to display the images required by the mobile terminal 1, and the motherboard 12 is used to house electronic components such as chips, interfaces, and resistors. The motherboard 12 is typically connected to the battery 14 of the mobile terminal 1 to supply power to components such as the display screen 11, antenna structure 13, and first conductive structure 16, which are electrically connected to it, and to control their operating status. The antenna structure 13 is connected to the motherboard 12 through a feed terminal and a ground terminal, enabling the antenna structure 13 to radiate electromagnetic waves, thereby realizing the communication function of the mobile terminal 1.

[0074] The mobile terminal 1 disclosed in this application, by setting a first conductive structure 16 and a second conductive structure 17, which are spaced apart and insulated from each other in the first direction X, forms a capacitor between the first conductive structure 16 and the second conductive structure 17 due to the voltage difference when the motherboard 12 supplies power to the first conductive structure 16. The vertical electric field generated by the capacitor (i.e., the electric field parallel to the first direction X) reduces the proportion of the horizontal electric field (i.e., the electric field perpendicular to the first direction X) between the antenna structure 13 and the user's skin, while increasing the proportion of the vertical electric field. This reduces the occurrence of current generated by the horizontal electric field on the user's skin, thereby reducing the loss of electromagnetic waves radiated by the antenna structure 13 and improving the radiation efficiency of the antenna structure 13.

[0075] It is understandable that the aforementioned first direction X is the thickness direction of the mobile terminal 1, and also the direction parallel to the direction in which the display screen 11 faces the user's face when the user uses the mobile terminal 1. That is, taking the example where the display screen 11 is set on the first side 102 of the housing 10 and the display screen 11 is not set on the second side 103, then the side where the first side 102 is located is the top side of the housing 10 (the side facing the user's face when in use), and the side where the second side 103 is located is the bottom side of the housing 10. For example, taking the mobile terminal 1 as a watch, under normal circumstances, the watch is worn on the wrist, therefore, the second side 103 is the side that is in contact with or close to the user's wrist skin.

[0076] Optionally, the antenna structure 13 can be an IFA (Inverted-F antenna), a PCB (Printed Circuit Board) antenna, or an FPC (Flexible Printed Circuit) antenna, etc. The specific choice can be made according to the actual situation, and no specific limitation is made in this embodiment.

[0077] Please see Figure 7 In some embodiments, the antenna structure 13 is located on one side of the motherboard 12 in the second direction Y, and the antenna structure 13 is located on the side of the motherboard 12 opposite to the second side 103. Optionally, the antenna structure 13 can be disposed on the first side 102 of the housing 10, or on the side wall of the housing 10 in the second direction Y, or partially disposed on the first side 102 of the housing 10 and partially disposed on the side wall of the housing 10 in the second direction Y. The specific choice can be made according to the actual situation, and no specific limitation is made in this embodiment.

[0078] It is understandable that the second direction Y is perpendicular to the first direction X, and the second direction Y can be the width direction or the length direction of the mobile terminal 1, etc.

[0079] Since the antenna structure 13 is usually exposed outside the housing 10 of the mobile terminal 1, by placing the antenna structure 13 on one side of the motherboard 12 in the second direction Y and on the side of the motherboard 12 away from the second side 103, it is convenient for the antenna structure 13 to extend from the motherboard 12 to the side wall exposed outside the housing 10. At the same time, the antenna structure 13 is placed closer to the first side 102 of the housing 10 relative to the motherboard 12 and the second conductive structure 17, so that the electric field generated by the capacitor formed by the first conductive structure 16 and the second conductive structure 17 can affect the horizontal electric field between the antenna structure 13 and the user's skin.

[0080] Optionally, both the first conductive structure 16 and the second conductive structure 17 can be made of conductive materials, such as metal, graphite or conductive plastic, etc. The specific choice can be made according to the actual situation, and no specific limitation is made in this embodiment.

[0081] Optionally, the first conductive structure 16 can be a separate component, such as a conductive plate or conductive block, or it can be the battery 14 already present in the mobile terminal 1, using the battery 14 to form the first conductive structure 16. Alternatively, the first conductive structure 16 can be, for example, part of the motherboard 12, that is, using a portion of the motherboard 12 to construct the first conductive structure 16, thus eliminating the need for an additional first conductive structure 16. In the above methods, it is sufficient that the first conductive structure 16 and the second conductive structure 17 can form a capacitor. This application will describe these two cases separately below.

[0082] In some embodiments, the first conductive structure 16 may be a separate component. For example, such as Figure 7 As shown, the battery 14 of the mobile terminal 1 is connected to the motherboard 12. The battery 14 is at least partially constructed as a first conductive structure 16 along the first direction X. The motherboard 12 is located between the display screen 11 and the battery 14.

[0083] By constructing at least a portion of the battery 14 of the mobile terminal 1 as a first conductive structure 16, and forming a capacitor between the battery 14 and the second conductive structure 17, a component inherent in the mobile terminal 1 itself is used as the first conductive structure 16, achieving structural reuse and simplifying the structural design of the mobile terminal 1. Furthermore, since the motherboard 12 is located between the display screen 11 and the battery 14, it helps to reduce the distance between the battery 14 and the second conductive structure 17 in the first direction X, thereby increasing the capacitance of the capacitor and further reducing the loss of electromagnetic waves radiated by the antenna structure 13.

[0084] Optionally, the battery 14 may be partially constructed as the first conductive structure 16, for example, a portion of the side of the battery 14 facing the second conductive structure 17 may be made of conductive material, or it may be entirely constructed as the first conductive structure 16, for example, the entire side of the battery 14 facing the second conductive structure 17 may be made of conductive material. The specific choice can be made according to the actual situation, and no specific limitation is made in this embodiment.

[0085] Of course, it is understandable that, as mentioned above, besides using battery 14 to construct the first conductive structure 16, a conductive metal plate can also be added inside the mobile terminal 1 to form the first conductive structure 16, thereby forming a capacitor with the second conductive structure 17. Specifically, as... Figure 8As shown, the first conductive structure 16 can be an additional conductive metal plate, which is electrically connected to the main board 12. The conductive metal plate is located on the side of the main board 12 and the battery 14 away from the first side 102 of the housing 10. That is, the battery 14, the main board 12, and the conductive metal plate are arranged in sequence in the direction from the first side 102 to the second side 103, or the main board 12, the battery 14, and the conductive metal plate are arranged in sequence.

[0086] like Figure 9 As shown, in other embodiments, the first conductive structure 16 may also be, for example, part of the motherboard 12. That is, the motherboard 12 is at least partially constructed as the first conductive structure 16, and correspondingly, the battery 14 in the mobile terminal 1 may be located between the display screen 11 and the motherboard 12.

[0087] By constructing at least a portion of the motherboard 12 of the mobile terminal 1 as a first conductive structure 16, a capacitor is formed between the motherboard 12 and the second conductive structure 17. This utilizes a component inherent in the mobile terminal 1 itself as the first conductive structure 16, achieving structural reuse and simplifying the structural design of the mobile terminal 1. Furthermore, since the battery 14 is located between the display screen 11 and the motherboard 12, the distance between the battery 14 and the second conductive structure 17 in the first direction X is reduced, thereby increasing the capacitance of the capacitor and further reducing the loss of electromagnetic waves radiated by the antenna structure 13.

[0088] Optionally, the motherboard 12 may be partially constructed as the first conductive structure 16. For example, a portion of the motherboard 12 on the side facing the second conductive structure 17 may be constructed as the first conductive structure 16. Alternatively, the entire motherboard 12 may be constructed as the first conductive structure 16. The specific choice can be made according to the actual situation, and no specific limitation is made in this embodiment.

[0089] The following explanation will use the first conductive structure 16 as an example of the two methods described above.

[0090] Please refer to it again. Figures 3 to 6 In some embodiments, the housing 10 includes a top shell 10a and a bottom shell 10b that are connected to each other. The top shell 10a has a first side 102, and the bottom shell 10b has a second side 103. By providing the top shell 10a and the bottom shell 10b, it is convenient to install components such as the display screen 11, the motherboard 12, and the battery 14 within the space formed by the top shell 10a and the bottom shell 10b. For example, the display screen 11 can be installed on the top shell 10a first, and the motherboard 12 and the battery 14 can be installed on the bottom shell 10b before connecting the top shell 10a and the bottom shell 10b.

[0091] Optionally, the top shell 10a may include a top cover (not shown) and a middle frame 101, with the middle frame 101 connecting the top cover and the bottom shell 10b. Alternatively, the bottom shell 10b may include a bottom cover 100 and a middle frame 101, with the middle frame 101 connecting the top shell 10a and the bottom cover 100. The specific structure of the shell 10 can be configured according to actual conditions and is not specifically limited in this embodiment. Of course, in other embodiments, the mobile terminal 1 may not include the middle frame 101.

[0092] This embodiment uses the bottom shell 10b, including the bottom cover 100 and the middle frame 101, as an example for illustration.

[0093] Optionally, the second conductive structure 17 can be disposed inside the housing 10 or outside the housing 10. The specific choice can be made according to the actual situation, and no specific limitation is made in this embodiment.

[0094] In some embodiments, the second conductive structure 17 may be disposed outside the housing 10. In this case, the bottom housing 10b may be made of insulating material so that the second conductive structure 17 is insulated from the first conductive structure 16.

[0095] By placing the second conductive structure 17 outside the housing 10 and making the bottom shell 10b an insulating material, the second conductive structure 17 outside the housing 10 and the first conductive structure 16 can be spaced and insulated in the first direction X. This achieves structural reuse of the bottom shell 10b, eliminating the need for additional insulating components or insulating spaces (i.e., air insulation) between the second conductive structure 17 and the first conductive structure 16. This simplifies the structural design of the mobile terminal 1 and reduces the overall size of the mobile terminal 1 in the first direction X, thus facilitating the miniaturization design of the mobile terminal 1.

[0096] Optionally, the material of the bottom shell 10b can be plastic or rubber, etc., and the specific choice can be made according to the actual situation. In this embodiment, no specific limitation is made. When the material of the bottom shell 10b is plastic, while ensuring that the first conductive structure 16 and the second conductive structure 17 are insulated, on the one hand, the bottom shell 10b of the mobile terminal 1 has a certain structural strength, and at the same time, it can help the lightweight design of the mobile terminal 1. On the other hand, it makes it less likely for users (such as children and the elderly) to be scratched by the shell 10 when using the mobile terminal 1, thereby improving the safety of users using the mobile terminal 1.

[0097] Optionally, the second conductive structure 17 can be a conductive plate-like structure disposed outside the housing 10, such as a metal plate; or it can be a conductive film electroplated on the outside of the housing 10. Alternatively, other components outside the housing 10 can be constructed as the second conductive structure 17. For example, when the mobile terminal 1 is a smartwatch, at least a portion of the smartwatch's strap or base 15 can be constructed as the second conductive structure 17. The specific configuration can be selected according to the actual situation, and is not specifically limited in this embodiment.

[0098] Take this smartwatch as an example, which includes a base 15.

[0099] In some embodiments, the mobile terminal 1 further includes a base 15, to which the bottom shell 10b is movably connected, allowing the bottom shell 10b to flip relative to the base 15. By providing the base 15, the base 15 can support the housing 10, and the bottom shell 10b of the housing 10 is movably connected to the base 15, allowing the housing 10 to flip relative to the base 15. When the mobile terminal 1 is a smartwatch, the shooting angle of the camera on the smartwatch can be adjusted even when worn on the user's wrist.

[0100] Specifically, a pivot can be provided on the bottom shell 10b, and a through hole can be provided on the bottom support 15. The rotation function of the shell 10 can be achieved through the cooperation of the pivot and the through hole. Alternatively, a ball-head rod can be provided on the bottom shell 10b, and a groove can be provided on the bottom support 15. The rotation and rotation functions of the shell 10 can be achieved simultaneously through the cooperation of the ball-head rod and the groove. Alternatively, a ball-head rod can be provided on the bottom shell 10b, and a connector with a groove can be provided. The ball-head rod is connected to the groove, and the connector is also provided with a buckle. The bottom support 15 is provided with a slot. The slot and the buckle are detachably connected. The rotation, rotation, and detachment functions of the shell 10 can be achieved simultaneously through the cooperation of the ball-head rod and the groove, and the cooperation of the slot and the buckle. The specific choice can be made according to the actual situation, and no specific limitation is made in this embodiment.

[0101] In some embodiments, the base 15 is at least partially configured as a second conductive structure 17.

[0102] By constructing at least a portion of the base 15 as a second conductive structure 17, the base 15 and the first conductive structure 16 can form a capacitor, enabling structural reuse of the base 15 and simplifying the structural design of the mobile terminal 1.

[0103] Optionally, the base 15 may be partially or entirely constructed as the second conductive structure 17, depending on the actual situation, and is not specifically limited in this embodiment.

[0104] Optionally, the base 15 can be a plate-like structure, a block-like structure, or a frame structure, etc., and the specific choice can be made according to the actual situation. In this embodiment, no specific limitation is made.

[0105] Please refer to the following: Figure 10 and Figure 11 In some embodiments, the base 15 includes a support plate 15a and a conductive plate 15b, and the bottom shell 10b is movably connected to the support plate 15a. The conductive plate 15b is configured as a second conductive structure 17. As can be seen from the foregoing, since the bottom shell 10b is made of insulating material, that is, the bottom shell 10b has already achieved insulation between the first conductive structure 16 and the second conductive structure 17, the support plate 15a can be made of either insulating or conductive material.

[0106] Optionally, the support plate 15a is used to support the housing 10 and is movably connected to the bottom shell 10b, and the conductive plate 15b, as the second conductive structure 17, can form a capacitor with the first conductive structure 16.

[0107] Optionally, the conductive plate 15b is disposed within the support plate 15a, or the conductive plate 15b is disposed on the side of the support plate 15a opposite to the bottom shell 10b, or the conductive plate 15b is disposed on the side of the support plate 15a facing the bottom shell 10b. The specific choice can be made according to actual conditions, and no specific limitation is made in this embodiment. When the conductive plate 15b is disposed within the support plate 15a, the conductive plate 15b can be hidden, which helps to improve the aesthetics of the mobile terminal 1.

[0108] When the conductive plate 15b is placed inside the support plate 15a, the conductive plate 15b and the support plate 15a can be formed by means of secondary injection molding or 3D printing.

[0109] In other embodiments, when the bottom shell 10b is made of conductive material, the support plate 15a is made of insulating material, and the conductive plate 15b is disposed inside the support plate 15a, or the conductive plate 15b is disposed on the side of the support plate 15a away from the bottom shell 10b, so as to ensure that the first conductive structure 16 and the second conductive structure 17 are insulated from each other.

[0110] Optionally, the material of the support plate 15a can be plastic or rubber, etc., and the specific choice can be made according to the actual situation. In this embodiment, no specific limitation is made.

[0111] In some embodiments, the support plate 15a is made of plastic, and the second conductive structure 17 is made of metal. By making the support plate 15a of plastic, while ensuring insulation between the first conductive structure 16 and the second conductive structure 17, the support plate 15a has a certain structural strength, which also facilitates the lightweight design of the mobile terminal 1. Furthermore, it reduces the risk of scratches to users (e.g., children and the elderly) when using the mobile terminal 1, improving user safety. By making the second conductive structure 17 of metal, it can form a capacitor with the first conductive structure 16, and the second conductive structure 17 can improve the overall structural strength of the base 15, thus enhancing its support for the housing 10.

[0112] In some embodiments, the carrier plate 15a has a first cutout portion 150 in the middle, and the conductive plate 15b has a second cutout portion 151 in the middle corresponding to the first cutout portion 150. That is, both the carrier plate 15a and the conductive plate 15b are annular structures.

[0113] Since a sensor is typically located on the side of the bottom shell 10b of the mobile terminal 1 facing the base 15, for example, a PPG (Photoplethysmography) sensor is installed on the side of the bottom shell 10b facing the base 15 to detect the user's pulse. By providing a first cutout 150 in the middle of the support plate 15a and a second cutout 151 in the middle of the conductive plate 15b, the first cutout 150 and the second cutout 151 can avoid the sensor in the first direction X, enabling the sensor to perform the user detection function.

[0114] Please see Figure 7 In some embodiments, the distance between the second conductive structure 17 and the first conductive structure 16 in the first direction X is D, where D satisfies: 3mm ≤ D ≤ 5mm. For example, D can be 3mm, 4mm, or 5mm, etc.

[0115] On the one hand, the distance between the second conductive structure 17 and the first conductive structure 16 in the first direction X is relatively close, which helps to increase the capacitance of the capacitor formed by the second conductive structure 17 and the first conductive structure 16, and further helps to reduce the loss of electromagnetic waves radiated by the antenna structure 13. On the other hand, the distance between the second conductive structure 17 and the first conductive structure 16 in the first direction X is a certain. Since the bottom shell 10b and the support plate are provided between the second conductive structure 17 and the first conductive structure 16, the bottom shell 10b and the support plate can have a certain thickness in the first direction X, which helps to ensure the structural strength of the bottom shell 10b and the support plate.

[0116] In some embodiments, the mobile terminal 1 also includes a wearable component, such as a watch strap (not shown), which is connected to the base 15 and is worn on the user's arm.

[0117] Please see Figure 12 In some embodiments, the projections of the first conductive structure 16 and the antenna structure 13 along the first direction X are located within the second conductive structure 17.

[0118] Since the capacitance increases with the area of ​​the two plates facing each other, by positioning the projections of the first conductive structure 16 and the antenna structure 13 along the first direction X within the second conductive structure 17, both the antenna structure 13 and the first conductive structure 16 can form a capacitor with the second conductive structure 17. This effectively increases the area of ​​the two plates facing each other, thereby increasing the capacitance of the capacitor and further reducing the loss of electromagnetic waves radiated by the antenna structure 13.

[0119] In some embodiments, along the first direction X, the projection of the antenna structure 13 onto the second conductive structure 17 is a first projection, and the first projection has a first outer edge line along the second direction Y. The first outer edge line coincides with the outer edge 170 of the second conductive structure 17. It can be understood that, in actual production, due to machining tolerances, assembly tolerances, etc., the coincidence of the first outer edge line and the outer edge 170 of the second conductive structure 17 only needs to be approximately coincident.

[0120] By aligning the first outer edge with the outer edge 170 of the second conductive structure 17, the area of ​​the two plates facing each other in the capacitor is increased, thereby improving the capacitance of the capacitor. At the same time, the size of the second conductive structure 17 in the direction perpendicular to the first direction X can be reduced, which is beneficial for the miniaturization design of the mobile terminal 1.

[0121] In some embodiments, the second conductive structure 17 is a ring-shaped structure, and the first projection is located between the outer edge 170 and the inner edge 171 of the second conductive structure 17. That is, the second conductive structure 17 has a second hollow portion 151 in the middle.

[0122] By positioning the first projection between the outer edge 170 and the inner edge 171 of the second conductive structure 17, the first projection can be located within the electric field space of the capacitor formed by the second conductive structure 17, the first conductive structure 16, and the antenna structure 13. This is beneficial for the electric field of the capacitor formed by the second conductive structure 17, the first conductive structure 16, and the antenna structure 13 to better influence the electric field of the antenna structure 13, thereby reducing the proportion of the horizontal electric field between the antenna structure 13 and the user's skin.

[0123] In some embodiments, the antenna structure 13 extends along a third direction Z, and the size of the antenna structure 13 in the third direction Z corresponds to 1 / 4 of the operating wavelength of the antenna structure 13. For example, if the operating wavelength is 30cm, then the size of the antenna structure 13 in the third direction Z is approximately 7.5cm (approximately 7.5cm means that the length of the antenna structure 13 can be around 7.5cm, such as 7.6cm or 7.4cm, etc.).

[0124] In this way, when the antenna structure 13 resonates near the operating frequency, the efficiency of the antenna structure 13 in radiating electromagnetic waves can be improved.

[0125] It is understandable that the third direction Z is perpendicular to the first direction X, and the third direction Z is not parallel to the second direction Y. For example, the second direction Y can be the length direction of the mobile terminal 1, and the third direction Z can be the width direction of the mobile terminal 1.

[0126] To further understand the relevant parameters of the antenna structure 13 disclosed in this application, please refer to [the relevant documentation]. Figures 13 to 16 .

[0127] Figure 13 In the diagram, the curve marked "with base support 15" represents the reflection coefficient of the antenna structure 13 under the scheme disclosed in this application in which a conductive plate 15b is provided in the support plate 15a of the base support 15 (tested under the whole machine model), and the curve marked "without base support 15" represents the reflection coefficient of the antenna structure 13 under the scheme in the related art in which a second conductive structure 17 is not provided.

[0128] It can be seen that, at different operating frequencies, the antenna structure 13 with a conductive plate 15b disposed in the support plate 15a of the base 15 disclosed in this application has a smaller reflection coefficient than the antenna structure 13 without a second conductive structure 17 in related technologies, and has a better reflection coefficient.

[0129] Figure 14 In the diagram, the curve marked "with base support 15" represents the radiation efficiency of the antenna structure 13 under the scheme disclosed in this application in which a conductive plate 15b is provided in the support plate 15a of the base support 15 (tested under the whole machine model), and the curve marked "without base support 15" represents the radiation efficiency of the antenna structure 13 under the scheme in the related art in which a second conductive structure 17 is not provided.

[0130] It is evident that, at different operating frequencies, the antenna structure 13 disclosed in this application, which has a conductive plate 15b disposed within the support plate 15a of the base 15, exhibits higher radiation efficiency than the antenna structure 13 in related technologies that does not have a second conductive structure 17, thus demonstrating better radiation efficiency.

[0131] Figure 15 In the diagram, the curve labeled "with square base 15" represents the reflection coefficient of the antenna structure 13 under the scheme disclosed in this application, where a conductive plate 15b is provided inside the support plate 15a of the base 15, and both the support plate 15a and the conductive plate 15b are square (tested under a simplified model, i.e., only considering the influence of the second conductive structure 17 and the first conductive structure 16 on the antenna structure 13). The curve labeled "with ring base 15" represents the reflection coefficient of the antenna structure 13 under the scheme disclosed in this application, where a conductive plate 15b is provided inside the support plate 15a of the base 15, and a second hollow portion 151 is provided on the conductive plate 15b. The curve labeled "without base 15" represents the reflection coefficient of the antenna structure 13 under the scheme in the related art where the second conductive structure 17 is not provided.

[0132] It can be seen that, under the existing technology and the two schemes of this application, the reflection coefficient of antenna structure 13 has good convergence at a frequency of 1.575GHz.

[0133] Figure 16 In the diagram, the curve labeled "with square base 15" represents the radiation efficiency of the antenna structure 13 under the scheme disclosed in this application, where a conductive plate 15b is provided inside the support plate 15a of the base 15, and both the support plate 15a and the conductive plate 15b are square (tested under a simplified model, i.e., only considering the influence of the second conductive structure 17 and the first conductive structure 16 on the antenna structure 13). The curve labeled "with ring base 15" represents the radiation efficiency of the antenna structure 13 under the scheme disclosed in this application, where a conductive plate 15b is provided inside the support plate 15a of the base 15, and a second hollow portion 151 is provided on the conductive plate 15b. The curve labeled "without base 15" represents the radiation efficiency of the antenna structure 13 under the scheme in the related art where the second conductive structure 17 is not provided.

[0134] It is evident that, at different operating frequencies, the antenna structure 13 disclosed in this application, which has a conductive plate 15b disposed within the support plate 15a of the base 15 and both the support plate 15a and the conductive plate 15b being square, exhibits higher radiation efficiency than the antenna structure 13 disclosed in this application, which has a conductive plate 15b disposed within the support plate 15a of the base 15 and a second hollow portion 151 disposed on the conductive plate 15b. The antenna structure 13 disclosed in this application, which has a conductive plate 15b disposed within the support plate 15a of the base 15 and a second hollow portion 151 disposed on the conductive plate 15b, exhibits higher radiation efficiency at different operating frequencies. The antenna structure 13 with a second hollow portion 151 on the conductive plate 15b has a higher radiation efficiency than the antenna structure 13 without the second conductive structure 17 in the prior art. Both solutions in this application have better reflection and radiation efficiency than the prior art. Furthermore, the antenna structure 13 with a conductive plate 15b inside the support plate 15a of the base 15 and with both the support plate 15a and the conductive plate 15b being square has even better radiation efficiency.

[0135] The mobile terminal disclosed in the embodiments of the present invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the mobile terminal of the present invention and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A mobile terminal, characterized in that, include: A housing having a first side and a second side opposite each other along a first direction; A display screen is connected to the housing, and the display screen is located on a first side of the housing; The motherboard is located inside the housing and is electrically connected to the display screen; An antenna structure is disposed in the housing, the antenna structure having a feed terminal and a ground terminal, the feed terminal and the ground terminal being respectively connected to the main board; A first conductive structure is disposed inside the housing, and the first conductive structure is electrically connected to the motherboard; A second conductive structure is disposed on the housing and located on the second side of the housing. The second conductive structure is further away from the first side of the housing relative to the antenna structure in the first direction. The second conductive structure and the first conductive structure are spaced apart and insulated from each other in the first direction to form a capacitor.

2. The mobile terminal according to claim 1, characterized in that, The battery of the mobile terminal is at least partially configured as the first conductive structure, and the motherboard is located between the display screen and the battery along the first direction.

3. A mobile terminal, characterized in that, include: A housing having a first side and a second side opposite each other along a first direction; The display screen is housed within the housing, and the motherboard is electrically connected to the display screen; The motherboard is located inside the housing and is electrically connected to the display screen; An antenna structure is disposed in the housing, the antenna structure having a feed terminal and a ground terminal, the feed terminal and the ground terminal being respectively connected to the main board; A first conductive structure is disposed within the housing; A second conductive structure is disposed on the housing and located on the second side of the housing. The second conductive structure is further away from the first side of the housing relative to the antenna structure in the first direction. The second conductive structure and the first conductive structure are spaced apart and insulated from each other in the first direction to form a capacitor. The motherboard is at least partially constructed as the first conductive structure.

4. The mobile terminal according to any one of claims 1-3, characterized in that, The antenna structure is located on one side of the motherboard in the second direction, and the antenna structure is located on the side of the motherboard opposite to the second side; The second direction is perpendicular to the first direction.

5. The mobile terminal according to any one of claims 1-3, characterized in that, The second conductive structure is disposed outside the housing. The housing includes a top shell and a bottom shell that are connected to each other. The top shell has the first side, and the bottom shell has the second side. The bottom shell is made of insulating material so that the second conductive structure is insulated from the first conductive structure.

6. The mobile terminal according to claim 5, characterized in that, The mobile terminal also includes a base, and the bottom shell is movably connected to the base so that the bottom shell can be flipped relative to the base; The base is at least partially constructed as the second conductive structure.

7. The mobile terminal according to claim 6, characterized in that, The base includes a support plate and a conductive plate, the bottom shell is movably connected to the support plate, and the conductive plate is configured as the second conductive structure; The conductive plate is disposed inside the support plate, or the conductive plate is disposed on the side of the support plate away from the bottom shell, or the conductive plate is disposed on the side of the support plate facing the bottom shell.

8. The mobile terminal according to claim 7, characterized in that, The bearing plate has a first hollow section in the middle, and the conductive plate has a second hollow section in the middle corresponding to the first hollow section.

9. The mobile terminal according to any one of claims 1-3, characterized in that, The second conductive structure is disposed outside the housing, the housing including a top shell and a bottom shell that are connected to each other, the top shell having the first side and the bottom shell having the second side; The mobile terminal also includes a base, which includes a support plate and a conductive plate. The bottom shell is movably connected to the support plate, and the conductive plate is disposed inside the support plate, or the conductive plate is disposed on the side of the support plate away from the bottom shell. The conductive plate is configured as the second conductive structure, and the carrier plate is configured as an insulating material to insulate the second conductive structure from the first conductive structure.

10. The mobile terminal according to claim 7 or 9, characterized in that, The carrier plate is made of plastic, and the conductive plate is made of metal.

11. The mobile terminal according to any one of claims 1-3, characterized in that, The distance between the second conductive structure and the first conductive structure in the first direction is D, where D satisfies: 3mm≤D≤5mm.

12. The mobile terminal according to any one of claims 1-3, characterized in that, The antenna structure extends along a third direction, and in this third direction, the size of the antenna structure corresponds to 1 / 4 of the operating wavelength of the antenna structure. The third direction is perpendicular to the first direction.

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