Near field communication coil and intelligent terminal

Abstract

The utility model provides a near field communication coil and an intelligent terminal. The near field communication coil comprises a first coil part and a second coil part, the first coil part is arranged on the left side or the right side of a camera of the intelligent terminal; the second coil part is located on the left side or the right side of the first coil part and is lower than the first coil part; and the second coil part is arranged on the upper side of the camera. According to the near-field communication coil, the first coil part extends outwards by one branch to form the second coil part, and the second coil part with the smaller height can be arranged in a narrow space between the camera and the upper side edge of the intelligent terminal in an insertion manner, so that the coverage range of the near-field communication coil on the upper side part of the intelligent terminal is widened; the limitation on the magnetic field range due to the existence of the camera is reduced, so that the intelligent terminal is more easily sensed by the card reader, the success rate of data exchange is improved, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of near field communication technology, and in particular to a near field communication coil and a smart terminal. Background Art

[0002] NFC (Near Field Communication) is a short-range, high-frequency wireless communication technology. With the rapid development of terminal devices and the popularization of mobile consumer electronics such as smart phones, the NFC system with low energy consumption and fast data transmission speed has been widely used in mobile payment, electronic identity authentication, subway travel, access control gates and other fields.

[0003] In the process of conceiving and implementing this application, the inventors found that there are at least the following problems: mobile phones and other terminal devices have obvious directionality when using the NFC system to exchange data. When the device is at certain angles, it is often difficult for the card reader to sense it, resulting in the inability to carry out data exchange normally and a poor user experience.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] In response to the above technical problems, the present application provides a near field communication coil and a smart terminal to reduce the requirements for directionality when devices exchange data through the NFC system, making the device easier to be sensed by a card reader.

[0006] The present application provides a near field communication coil, which can be applied to a smart terminal. The near field communication coil includes:

[0007] A first coil part, wherein the first coil part is arranged on the left side or the right side of the camera of the smart terminal;

[0008] The second coil part is located on the left side or the right side of the first coil part, and the height of the second coil part is less than the height of the first coil part; the second coil part is arranged on the upper side of the camera.

[0009] Optionally, the first coil portion and the second coil portion are wound by the same target conductor.

[0010] Optionally, the first coil part has an extension portion, which protrudes outward from the left side or the right side of the first coil part; and the extension portion is arranged on the lower side of the camera.

[0011] Optionally, the first coil portion has a relief portion, and the relief portion is recessed inward from the right side and / or the lower side of the first coil portion.

[0012] The present application also provides a smart terminal, including a camera and the near field communication coil as described above.

[0013] Optionally, the smart terminal further includes a terminal housing, and the camera and the near field communication coil are arranged inside the terminal housing.

[0014] Optionally, the first coil portion is located between the right side of the camera and the right edge of the terminal housing.

[0015] Optionally, the first coil portion is located between a left side of the camera and a left edge of the terminal housing.

[0016] Optionally, the second coil portion is located between an upper side of the camera and an upper edge of the terminal housing.

[0017] Optionally, there is a first preset distance between the first coil part and / or the second coil part and a corresponding edge of the terminal housing.

[0018] Optionally, a linear distance between an upper edge of the first coil portion and an upper edge of the terminal housing is less than 10 mm.

[0019] Optionally, a linear distance between an upper edge of the second coil portion and an upper edge of the terminal housing is less than 10 mm.

[0020] Optionally, a linear distance between a left edge / right edge of the second coil portion and a left edge / right edge of the terminal housing is less than 10 mm.

[0021] Optionally, a straight-line distance between a right edge / left edge of the first coil portion and a right edge / left edge of the terminal housing is less than 7 mm.

[0022] Optionally, the intelligent terminal also includes a target cellular antenna, which is arranged at the right edge of the terminal shell; the first coil part has a avoidance portion, which is recessed inward from the right side and / or lower side of the first coil part, and there is a second preset distance between the avoidance portion and the target cellular antenna.

[0023] Optionally, a linear distance between an outer edge of the avoidance portion and the target cellular antenna is 1.8-2.2 mm.

[0024] Optionally, the intelligent terminal further includes a mainboard, and two ends of the near field communication coil are connected to near field communication feeding points of the mainboard.

[0025] As described above, the near-field communication coil of the present application is formed by extending a branch outward from the left or right side of the first coil part as the main body to form a second coil part, and the height of the second coil part is less than the height of the first coil part. In this way, when the first coil part is set on the left or right side of the camera of the smart terminal, the second coil part with a smaller height can be correspondingly inserted and set in the narrow space between the camera and the upper edge of the smart terminal. Through this technical solution, the coverage range of the near-field communication coil on the upper side of the smart terminal is broadened, the limitation on the magnetic field range caused by the presence of the camera is reduced, the lack of field strength in the narrow space around the camera is compensated, and the directionality requirements of the smart terminal when exchanging data through near-field communication are reduced, making the smart terminal easier to be sensed by the card reader, improving the success rate of data exchange, and thus improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0027] Figure 1 A schematic diagram of the hardware structure of a smart terminal for implementing each embodiment of the present application;

[0028] Figure 2 A communication network system architecture diagram provided for an embodiment of the present application;

[0029] Figure 3 is a schematic structural diagram of a near field communication coil according to the first embodiment;

[0030] Figure 4 is a schematic structural diagram of a near field communication coil according to a second embodiment;

[0031] Figure 5 is a schematic structural diagram of a near field communication coil according to a third embodiment;

[0032] Figure 6 is a schematic structural diagram of a near field communication coil according to a fourth embodiment;

[0033] Figure 7 is a schematic structural diagram of an intelligent terminal according to a fifth embodiment;

[0034] Figure 8 It is a schematic diagram of the structure of an intelligent terminal according to the sixth embodiment.

[0035] Description of Figure Numbers:

[0036] Label name Label name 1 First coil part 6 Terminal housing 2 Second coil part 7 Target Cellular Antenna 3 Target conductor 11 Extension 4 PAD Point 12 Avoidance Department 5 Camera

[0037] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0039] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0040] It should be understood that, although the terms first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this article, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination". Furthermore, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or", "and / or", "including at least one of the following" etc. used in this application can be interpreted as inclusive, or mean any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”, and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will only occur when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0041] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0042] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0043] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0045] The smart terminal may be implemented in various forms. For example, the smart terminal described in this application may include smart terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0046] The following description will be made by taking a mobile terminal as an example, and those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the construction according to the embodiments of the present application can also be applied to fixed-type terminals.

[0047] See also Figure 1 , which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application, the mobile terminal 100 may include: RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output unit 103, A / V (audio / video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111 and other components. Those skilled in the art can understand that Figure 1 The structure of the mobile terminal shown in the figure does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0048] Combine the following Figure 1 The following is a detailed introduction to the various components of the mobile terminal:

[0049] The radio frequency unit 101 can be used for receiving and sending signals during information transmission or communication. Specifically, after receiving the downlink information of the base station, it is sent to the processor 110 for processing; in addition, the uplink data is sent to the base station. Generally, the radio frequency unit 101 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 101 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communications can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution) and 5G, etc.

[0050] WiFi is a short-range wireless transmission technology. Mobile terminals can help users send and receive emails, browse web pages, and access streaming media through WiFi module 102. It provides users with wireless broadband Internet access. Figure 1 The WiFi module 102 is shown, but it is understandable that it is not an essential component of the mobile terminal and can be omitted as required without changing the essence of the invention.

[0051] The audio output unit 103 can convert the audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, etc. Moreover, the audio output unit 103 can also provide audio output related to a specific function performed by the mobile terminal 100 (for example, a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0052] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processor (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 106. The image frame processed by the graphics processor 1041 can be stored in the memory 109 (or other storage medium) or sent via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a telephone call mode, a recording mode, a voice recognition mode, and other operating modes, and can process such sound into audio data. The processed audio (voice) data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 can implement various types of noise elimination (or suppression) algorithms to eliminate (or suppress) noise or interference generated in the process of receiving and sending audio signals.

[0053] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 1061 and / or the backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured on the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated here.

[0054] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0055] The user input unit 107 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 1071 or near the touch panel 1071 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a pre-set program. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 110, and can receive and execute the command sent by the processor 110. In addition, the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may further include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, a function key (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, etc., which are not specifically limited here.

[0056] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Then, the processor 110 provides corresponding visual output on the display panel 1061 according to the type of touch event. Figure 1 In the figure, the touch panel 1071 and the display panel 1061 are used as two independent components to implement the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to implement the input and output functions of the mobile terminal, which is not limited here.

[0057] The interface unit 108 serves as an interface through which at least one external device can be connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.

[0058] The memory 109 can be used to store software programs and various data. The memory 109 can mainly include a program storage area and a data storage area. Optionally, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0059] The processor 110 is the control center of the mobile terminal. It uses various interfaces and lines to connect various parts of the entire mobile terminal. It executes various functions of the mobile terminal and processes data by running or executing software programs and / or modules stored in the memory 109, and calling data stored in the memory 109, so as to monitor the mobile terminal as a whole. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 110.

[0060] The mobile terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system.

[0061] although Figure 1 Not shown, the mobile terminal 100 may further include a Bluetooth module, etc., which will not be described in detail here.

[0062] In order to facilitate understanding of the embodiments of the present application, the communication network system on which the mobile terminal of the present application is based is described below.

[0063] See also Figure 2 , Figure 2 A communication network system architecture diagram is provided for an embodiment of the present application, wherein the communication network system is an LTE system of universal mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203 and an operator's IP service 204, which are connected in sequence for communication.

[0064] Optionally, UE201 may be the above-mentioned terminal 100, which will not be described in detail here.

[0065] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 , etc. Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface), and eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide UE 201 with access to EPC 203 .

[0066] EPC203 may include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, PGW (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, and provides bearer and connection management. HSS 2032 is used to provide some registers to manage functions such as home location register (not shown in the figure), and store some user-specific information such as service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide IP address allocation and other functions for UE 201, PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources, which selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

[0067] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem) or other IP services.

[0068] Although the above introduction takes the LTE system as an example, those skilled in the art should know that the present application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation here.

[0069] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0070] First embodiment

[0071] Reference Figures 3 to 5 The near field communication coil includes a first coil part 1 and a second coil part 2; the first coil part 1 is arranged on the left or right side of the camera 5 of the smart terminal; the second coil part 2 is located on the left or right side of the first coil part 1, the height of the second coil part 2 is less than the height of the first coil part 1, and the first coil part 1 and the second coil part 2 are wound by the same target conductor 3; the second coil part 2 is arranged on the upper side of the camera 5.

[0072] In this embodiment, the two ends of the target conductor 3 can be electrically connected to the functional module for implementing near field communication on the smart terminal in a direct or indirect manner, and the middle part of the target conductor 3 is wound along a preset path to form a first coil part 1 and a second coil part 2, and the first coil part 1 and the second coil part 2 together constitute a complete near field communication coil; wherein, the first coil part 1 can be regarded as the main part of the near field communication coil, and the second coil part 2 can be regarded as a branch extending outward from the main part. The number of target conductors 3 can be set to one or more. When the number of target conductors 3 is set to multiple, multiple target conductors 3 can be wound in parallel to form the first coil part 1 and the second coil part 2.

[0073] The outer contour of the first coil part 1 may be configured as follows Figure 3 The rectangle shown in FIG. 1 may also be set to a circle, other polygonal or irregular shape; similarly, the outer contour of the second coil portion 2 may be set to Figure 3 The rectangle shown may also be set to a circle, other polygons or irregular shapes. It is only necessary to ensure that the height dimension of the second coil part 2 is smaller than the height dimension of the first coil part 1 and extends to the outside of the first coil part 1, which is not limited here.

[0074] like Figure 3As shown, taking the conventional layout of smart terminals such as mobile phones as an example, when looking directly at the back of the smart terminal, the camera 5 is usually located on the upper left side of the smart terminal. For the sake of installation convenience, the traditional NFC coil is usually only arranged in a larger area on the right side of the camera 5, which results in the magnetic field generated by the NFC coil being more concentrated on the upper right side of the smart terminal, while the field strength in other areas of the smart terminal is weaker. This area with weaker field strength is difficult to be sensed when approaching the card reader, so that data exchange cannot be performed normally. Based on this problem, in this embodiment, the second coil part 2 can be set on the left side of the first coil part 1, and the upper edge of the second coil part 2 is flush with the upper edge of the first coil part 1. In this way, when the first coil part 1 is set on the right side of the camera 5, the second coil part 2 with a smaller height can be inserted in the narrow space between the camera 5 and the upper edge of the smart terminal, thereby widening the coverage range of the near-field communication coil on the upper side of the smart terminal, reducing the limitation on the magnetic field range caused by the presence of the camera 5, increasing the field strength on the upper left side of the smart terminal, and reducing the probability that the upper left side of the smart terminal is close to the card reader and cannot be sensed.

[0075] It can be understood that the relative positions of the first coil part 1 and the second coil part 2 can be specifically set according to the actual application situation. For example, when looking at the back of the smart terminal, if the camera 5 is located on the upper right side of the smart terminal, the second coil part 2 can be correspondingly set on the right side of the first coil part 1, and the upper edge of the second coil part 2 is flush with the upper edge of the first coil part 1. In this way, when the first coil part 1 is set on the left side of the camera 5, the second coil part 2 with a smaller height can still be inserted and set in the narrow space between the camera 5 and the upper edge of the smart terminal.

[0076] It can be seen that the near-field communication coil provided in this embodiment is formed by extending a branch outward from the left or right side of the first coil part 1 as the main body to form the second coil part 2, and the height of the second coil part 2 is less than the height of the first coil part 1. In this way, when the first coil part 1 is set on the left or right side of the camera 5 of the smart terminal, the second coil part 2 with a smaller height can be correspondingly inserted in the narrow space between the camera 5 and the upper edge of the smart terminal, thereby widening the coverage of the near-field communication coil on the upper side of the smart terminal, reducing the limitation on the magnetic field range caused by the presence of the camera 5, compensating for the lack of field strength in the narrow space around the camera 5, reducing the directionality requirements of the smart terminal when exchanging data through near-field communication, making the smart terminal easier to be sensed by the card reader, improving the success rate of data exchange, and thus improving the user experience.

[0077] Optionally, the target conductor 3 is made of soft ferrite material (FPC+ferrite) or nanocrystalline soft magnetic alloy (FPC+nanocrystal). Among them, soft ferrite material has good magnetic conductivity, weak coercive force, small residual magnetism after the external current is removed, etc.; nanocrystalline soft magnetic alloy has the advantages of high saturation magnetic induction, high magnetic permeability, and low high-frequency loss. Based on the above material setting of the target conductor 3, the electromagnetic induction effect of the near-field communication coil can be improved, so that data exchange can be completed more efficiently and stably through near-field communication.

[0078] Second embodiment

[0079] Part of the technical principles of the second embodiment are based on the first embodiment. For the sake of brief description, for parts not mentioned in this embodiment, reference may be made to the corresponding contents in the first embodiment.

[0080] Reference Figure 4 In this embodiment, the second coil part 2 is wound one circle; thus, a second coil part 2 with a smaller height can be formed, which can adapt to the situation where the distance between the camera 5 and the upper edge of the smart terminal is smaller.

[0081] Third embodiment

[0082] Part of the technical principles of the third embodiment are based on the first embodiment. For the sake of brief description, for parts not mentioned in this embodiment, reference may be made to the corresponding contents in the first embodiment.

[0083] Reference Figure 5 In this embodiment, the number of turns of the second coil part 2 is more than two. Figure 5 When the number of windings of the second coil part 2 is four, a second coil part 2 with a height of 5 mm can be formed. Based on the above configuration, the situation where the distance between the camera 5 and the upper edge of the smart terminal is large can be adapted, the number of windings can be maximized, and the field strength in the area where the second coil part 2 is located can be maximized while meeting the installation requirements.

[0084] Fourth embodiment

[0085] Part of the technical principles of the fourth embodiment is based on at least one of the first, second and third embodiments. For the sake of brief description, for parts not mentioned in this embodiment, reference may be made to the corresponding content of at least one of the first, second and third embodiments.

[0086] Reference Figure 6In the fourth embodiment, the first coil part 1 has an extension portion 11, and the extension portion 11 protrudes outward from the left side or the right side of the first coil part 1; the extension portion 11 is used to be arranged on the lower side of the camera 5.

[0087] Specifically, in the case of looking directly at the back of the smart terminal, taking the case where the camera 5 is located on the upper left side of the smart terminal as an example, the first coil part 1 is arranged on the right side of the camera 5. When the height of the first coil part 1 is greater than the height of the camera 5, that is, the lower edge of the first coil part 1 is lower than the lower edge of the camera 5, the lower left part of the first coil part 1 can be made to protrude outward to form an extension part 11. In this way, the space under the camera 5 is fully utilized, and the area of ​​the near-field communication coil and the coverage of the magnetic field generated by the near-field communication coil are further increased, so that it is easier to be sensed and read by the card reader.

[0088] It can be understood that the position of the extension portion 11 relative to the first coil portion 1 can be specifically set according to the actual application situation. For example, when looking at the back of the smart terminal, if the camera 5 is located on the upper right side of the smart terminal, the extension portion 11 can correspondingly protrude from the lower right side of the first coil portion 1 to the bottom of the camera 5.

[0089] Fifth embodiment

[0090] Part of the technical principles of the fifth embodiment are based on at least one of the first, second, third and fourth embodiments mentioned above. For the sake of brief description, parts not mentioned in this embodiment may refer to the corresponding content of at least one of the first, second, third and fourth embodiments mentioned above.

[0091] Reference Figure 7 The present application also provides a smart terminal, which includes a camera 5 and a near field communication coil in any of the above embodiments.

[0092] It is worth noting that since the smart terminal provided in this application includes all technical solutions of all embodiments of the above-mentioned near-field communication coil, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned near-field communication coil, which will not be repeated here one by one.

[0093] Optionally, refer to Figure 7 The smart terminal also includes a terminal shell 6, and the camera 5 and the near field communication coil are arranged inside the terminal shell 6.

[0094] Optionally, refer to Figure 7 , the first coil part 1 is located between the right side of the camera 5 and the right edge of the terminal housing 6.

[0095] Optionally, refer to Figure 7, the first coil part 1 is located between the left side of the camera 5 and the left edge of the terminal housing 6.

[0096] Optionally, refer to Figure 7 The second coil part 2 is located between the upper side of the camera 5 and the upper edge of the terminal housing 6 .

[0097] Optionally, refer to Figure 7 There is a first preset distance between the first coil part 1 and / or the second coil part 2 and the corresponding edge of the terminal housing 6.

[0098] Optionally, refer to Figure 7 , a straight-line distance L1 between an upper edge of the first coil portion 1 and an upper edge of the terminal housing 6 is less than 10 mm.

[0099] Optionally, refer to Figure 7 , a straight-line distance L2 between an upper edge of the second coil portion 2 and an upper edge of the terminal housing 6 is less than 10 mm.

[0100] Optionally, refer to Figure 7 , a straight line distance L3 between the left edge / right edge of the second coil part 2 and the left edge / right edge of the terminal housing 6 is less than 10 mm.

[0101] Optionally, refer to Figure 7 , a straight line distance L4 between the right edge / left edge of the first coil part 1 and the right edge / left edge of the terminal housing 6 is less than 7 mm.

[0102] Taking the smart terminal as a mobile phone as an example, the terminal shell 6 is the shell of the mobile phone. In addition to the near-field communication coil, the terminal shell 6 is usually also provided with a cellular antenna for signal transmission and reception to achieve functions such as calls and networking. In the case of looking directly at the back of the smart terminal, taking the camera 5 located on the upper left side of the smart terminal as an example, according to the conventional layout of the cellular antenna, the cellular antenna is usually arranged at the upper edge and left edge of the terminal shell 6; when the distance between the cellular antenna and the near-field communication coil is close, the near-field communication coil may interfere with the cellular antenna, thereby adversely affecting the performance of the cellular antenna.

[0103] Based on the above problems, this embodiment adaptively designs the position and size of the first coil part 1 and the second coil part 2 according to the conventional arrangement mode of the cellular antenna. Specifically, since the cellular antenna is arranged at the upper edge and the left edge of the terminal housing 6, the straight-line spacing between the first coil part 1, the second coil part 2 and the upper edge of the terminal housing 6 can be appropriately increased, and the straight-line spacing between the second coil part 2 and the left edge of the terminal housing 6 can also be appropriately increased, so that the first coil part 1, the second coil part 2 and the cellular antenna maintain an appropriate spacing, and reduce the adverse effects of the near-field communication coil on the performance of the cellular antenna while meeting the near-field communication requirements; and since the cellular antenna is usually not arranged at the right edge of the terminal housing 6, the straight-line spacing between the first coil part 1 and the right edge of the terminal housing 6 can be appropriately reduced, so that the coverage range of the magnetic field generated by the near-field communication coil can be extended as far outward as possible, and the near-field communication effect is preferentially guaranteed to be optimized.

[0104] Based on the above technical solution, the test data of the sensing distance of the smart terminal in each direction is as follows (using ACR122U card reader):

[0105]

[0106] It can be seen that this embodiment is based on the conventional layout of the cellular antenna and adaptively limits the distance between the near-field communication coil and the edge of the terminal shell 6, thereby reducing the adverse effects of the near-field communication coil on the performance of the cellular antenna. At the same time, the spatial magnetic field characteristics of the near-field communication coil can be used to enhance the omnidirectional card simulation effect, thereby optimizing the near-field communication effect.

[0107] It can be understood that, when looking directly at the back of the smart terminal, if the camera 5 is located on the upper right side of the smart terminal, the second coil part 2 should be arranged on the right side of the first coil part 1, and the first coil part 1 should be arranged between the left side of the camera 5 and the left edge of the terminal shell 6; at this time, the straight-line spacing L3 between the right edge of the second coil part 2 and the right edge of the terminal shell 6 should be limited to less than 10 mm, and / or the straight-line spacing L4 between the left edge of the first coil part 1 and the left edge of the terminal shell 6 should be limited to less than 7 mm; the specific technical effect obtained by this distance limitation can be referred to the above description and will not be repeated here.

[0108] Optionally, refer to Figure 7 The smart terminal also includes a mainboard, and both ends of the near-field communication coil are connected to near-field communication feed points of the mainboard.

[0109] Diagrammatically, PAD points 4 (pin pads) are provided at both ends of the near-field communication coil, which can be directly connected to the motherboard of the smart terminal by welding or other connection methods without reusing part of the branches of the cellular antenna. This can avoid the problem of cellular antenna performance attenuation caused by reusing the branches of the cellular antenna.

[0110] Sixth embodiment

[0111] Part of the technical principles of the sixth embodiment are based on at least one of the above-mentioned first, second, third, fourth and fifth embodiments. For the sake of brief description, parts not mentioned in this embodiment may refer to the corresponding content of at least one of the above-mentioned first, second, third, fourth and fifth embodiments.

[0112] Reference Figure 8 In this embodiment, the intelligent terminal also includes a target cellular antenna 7, which is arranged at the right edge of the terminal shell 6; the first coil part 1 has a avoidance portion 12, which is recessed inward from the right side and / or lower side of the first coil part 1, and there is a second preset distance between the avoidance portion 12 and the target cellular antenna 7.

[0113] It should be noted that the target cellular antenna 7 in this embodiment refers to a cellular antenna that is additionally arranged in addition to the conventional arrangement of cellular antennas. Illustrated, the target cellular antenna 7 is usually arranged at the right edge of the terminal housing 6 and close to the lower right side of the first coil part 1; by changing the extension path of the first coil part 1, the right side and / or lower side of the first coil part 1 is recessed inward to form a avoidance portion 12, which can effectively avoid the target cellular antenna 7, so that a certain distance is maintained between the first coil part 1 and the target cellular antenna 7, thereby reducing or eliminating the interference caused by the first coil part 1 to the target cellular antenna 7.

[0114] Among them, refer to Figure 8 , the linear distance L5 between the outer edge of the avoidance portion 12 and the target cellular antenna 7 can be set to 1.8-2.2 mm. Under this distance limit, the adverse effect of the first coil part 1 on the performance of the cellular antenna can be reduced, and the near-field communication effect can be prevented from being greatly weakened due to the distance between the first coil part 1 and the right edge of the smart terminal being too far. Preferably, the linear distance L5 between the outer edge of the avoidance portion 12 and the target cellular antenna 7 can be set to 2 mm.

[0115] The above examples are only reference examples. In order to avoid redundancy, they are not listed one by one here. In actual development or application, they can be flexibly combined according to actual needs, but any combination belongs to the technical solution of this application and is covered within the scope of protection of this application.

[0116] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0117] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0118] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0119] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0120] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0121] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0123] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A near field communication coil, applied to a smart terminal, characterized in that: The near field communication coil comprises: A first coil part, wherein the first coil part is arranged on the left side or the right side of the camera of the smart terminal; The second coil part is located on the left side or the right side of the first coil part, and the height of the second coil part is less than the height of the first coil part; the second coil part is arranged on the upper side of the camera.

2. The near field communication coil according to claim 1, characterized in that: The first coil portion and the second coil portion are wound by the same target conductor.

3. The near field communication coil according to claim 1 or 2, characterized in that: The first coil part has an extension portion, which protrudes outward from the left side or the right side of the first coil part; the extension portion is arranged on the lower side of the camera.

4. The near field communication coil according to claim 1 or 2, characterized in that: The first coil portion has an escape portion, and the escape portion is recessed inward from the right side and / or the lower side of the first coil portion.

5. An intelligent terminal, characterized in that: The device comprises a camera and a near field communication coil as claimed in any one of claims 1 to 4.

6. The intelligent terminal according to claim 5, characterized in that: The smart terminal further includes a terminal housing, the camera and the near field communication coil are arranged inside the terminal housing; the near field communication coil includes at least one of the following: The first coil portion is located between the right side of the camera and the right edge of the terminal housing; The first coil portion is located between the left side of the camera and the left edge of the terminal housing; The second coil portion is located between the upper side of the camera and the upper edge of the terminal housing; There is a first preset distance between the first coil portion and / or the second coil portion and a corresponding edge of the terminal housing.

7. The intelligent terminal according to claim 6, characterized in that: Include at least one of the following: The linear distance between the upper edge of the first coil portion and the upper edge of the terminal housing is less than 10 mm; The linear distance between the upper edge of the second coil portion and the upper edge of the terminal housing is less than 10 mm; The linear distance between the left edge / right edge of the second coil portion and the left edge / right edge of the terminal housing is less than 10 mm; A straight line distance between a right side edge / left side edge of the first coil portion and a right side edge / left side edge of the terminal housing is less than 7 mm.

8. The intelligent terminal according to claim 6, characterized in that: The intelligent terminal further includes a target cellular antenna, which is arranged at the right edge of the terminal housing; The first coil part has a avoiding portion, which is recessed inward from the right side and / or the lower side of the first coil part, and there is a second preset distance between the avoiding portion and the target cellular antenna.

9. The intelligent terminal according to claim 8, characterized in that: The linear distance between the outer edge of the avoidance portion and the target cellular antenna is 1.8 to 2.2 mm.

10. The intelligent terminal according to any one of claims 5 to 9, characterized in that: The intelligent terminal further includes a mainboard, and two ends of the near field communication coil are connected to near field communication feeding points of the mainboard.

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