CN113067120B - Near field communication circuit and electronic equipment - Google Patents

Near field communication circuit and electronic equipment Download PDF

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Publication number
CN113067120B
CN113067120B CN202110311730.3A CN202110311730A CN113067120B CN 113067120 B CN113067120 B CN 113067120B CN 202110311730 A CN202110311730 A CN 202110311730A CN 113067120 B CN113067120 B CN 113067120B
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nfc antenna
state
screen
scroll
nfc
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CN113067120A (en
Inventor
林挺裕
杜峰
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Publication of CN113067120A publication Critical patent/CN113067120A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Telephone Set Structure (AREA)

Abstract

The application discloses near field communication circuit and electronic equipment belongs to the intelligent terminal field. The near field communication circuit is applied to electronic equipment, the electronic equipment comprises a scroll screen, the scroll screen can be switched between a first state and a second state, and the scroll screen is in a winding state in the first state; in a second state, the reel screen is in an unfolded state, and the near field communication circuit includes: the matching circuit comprises a feeding point and a grounding point; the first NFC antenna is arranged on the scroll screen, one end of the first NFC antenna is provided with a contact point, and the other end of the first NFC antenna is grounded; wherein, under the condition that the spool screen is in first state, the contact point is connected with the feed point, and first NFC antenna is connected with matching circuit, forms the coil type return circuit. The embodiment of the application utilizes the scroll structure of the scroll screen to design the NFC antenna, the NFC antenna is arranged on the scroll screen, and the NFC antenna forms a coil loop when the scroll screen is in a winding state so as to realize the NFC antenna function.

Description

Near field communication circuit and electronic equipment
Technical Field
The application belongs to the field of intelligent terminals, and particularly relates to a near field communication circuit and electronic equipment.
Background
With the increasing progress of technology, a mobile terminal (such as a mobile phone) can be implemented to have a larger screen when in use and a smaller volume when not in use, and the mobile terminal is a scroll screen mobile terminal. Which can be used to pull the curved screen directly out of the body and retracted into the body when not in use.
Near Field Communication (NFC), which is a device using NFC technology (e.g., a mobile phone) that can exchange data when they are close to each other, is integrated and evolved from a non-contact Radio Frequency Identification (RFID) and an interconnection technology, and realizes applications such as mobile payment, electronic ticketing, door access, mobile identity recognition, anti-counterfeiting, and the like by integrating functions of an induction card reader, an induction card, and point-to-point Communication on a single chip and using a mobile terminal. The NFC antenna occupies a certain space area in a conventional mobile phone, and is prone to cause interference with other circuit modules inside the mobile phone.
Due to the special form of the scroll screen, the design of the NFC antenna is affected, and how to design the circuit becomes a difficult point.
Disclosure of Invention
The embodiment of the application provides a near field communication circuit and electronic equipment, and the problem of how to design an NFC antenna when the NFC antenna is combined with a scroll screen can be solved.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, a near field communication circuit is provided, which is applied to an electronic device, where the electronic device includes a scroll screen, where the scroll screen is switchable between a first state and a second state, and in the first state, the scroll screen is in a winding state; in the second state, the reel screen is in an unfolded state, and the near field communication circuit includes:
a matching circuit comprising a feed point and a ground point;
the first NFC antenna is arranged on the scroll screen, one end of the first NFC antenna is provided with a contact point, and the other end of the first NFC antenna is grounded;
wherein, under the condition that the scroll screen is in the first state, the contact point is connected with the feeding point, and the first NFC antenna is connected with the matching circuit to form a coil-shaped loop.
In a second aspect, there is provided an electronic device comprising a housing, a scroll screen and the near field communication circuit of the first aspect, wherein the scroll screen is switchable between a first state and a second state, and in the first state, the scroll screen is in a rolled state and is rolled in the housing; in the second state, the scroll screen is in an unfolded state.
In the embodiment of the application, the near field communication circuit is applied to an electronic device, the electronic device comprises a reel screen, the reel screen is switchable between a first state and a second state, the reel screen is in a winding state in the first state, the reel screen is in an unfolding state in the second state, the near field communication circuit comprises a matching circuit and a first NFC antenna, the matching circuit comprises a feeding point and a grounding point, the first NFC antenna is arranged on the reel screen, one end of the first NFC antenna is provided with a contact point, the other end of the first NFC antenna is grounded, the contact point is connected with the feeding point, and the first NFC antenna is connected with the matching circuit to form a coil-shaped loop. The embodiment of the application utilizes the scroll structure of the scroll screen to design the NFC antenna, the NFC antenna is arranged on the scroll screen, and the NFC antenna forms a coil loop when the scroll screen is in a winding state so as to realize the NFC antenna function.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram of an expanded structure of an electronic device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a collapsed configuration of an electronic device according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an expanded structure of another electronic device provided by an embodiment of the present application;
FIG. 4 is a schematic diagram of a collapsed configuration of another electronic device provided by an embodiment of the present application;
FIG. 5 is a schematic diagram of an expanded structure of yet another electronic device provided by an embodiment of the present application;
fig. 6 is a schematic diagram of a collapsed configuration of yet another electronic device according to an embodiment of the present application.
In the figures, 10-housing; 20-reel screen; 301-a first NFC antenna; 302-a second NFC antenna; 303-a third NFC antenna; 40-a matching circuit; 501-a first metal sheet; 502-a second metal sheet; 60-a diverter switch.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
A near field communication circuit and an electronic device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
As shown in fig. 1 to 6, the near field communication circuit is applied to an electronic device including a scroll screen 20, the scroll screen 20 being switchable between a first state in which the scroll screen 20 is in a rolled state and a second state; in the second state, the reel screen 20 is in an unfolded state. The near field communication circuit may include: a matching circuit 40 and a first NFC antenna 301.
Specifically, the matching circuit 40 includes a feeding point and a grounding point; the first NFC antenna 301 is disposed on the scroll screen 20, and one end of the first NFC antenna 301 is disposed with a contact point, and the other end is grounded.
In the case where the scroll screen 20 is in the first state, the contact point is connected to the feeding point, and the first NFC antenna 301 is connected to the matching circuit 40, thereby forming a coil-shaped loop.
That is, the NFC antenna is provided on the rolled screen, and is wound into a coil by using a characteristic that the roll screen 20 can be wound, so as to implement an NFC antenna function on an electronic device having the roll screen 20.
In the embodiment of the present application, the NFC circuit is applied to an electronic device, the electronic device includes a reel screen 20, the reel screen 20 is switchable between a first state and a second state, in the first state, the reel screen 20 is in a winding state, in the second state, the reel screen 20 is in an unfolding state, the NFC circuit includes a matching circuit 40 and a first NFC antenna 301, the matching circuit 40 includes a feeding point and a grounding point, the first NFC antenna 301 is disposed on the reel screen 20, one end of the first NFC is provided with a contact point, and the other end of the first NFC is grounded, wherein in a case where the reel screen 20 is in the first state, the contact point is connected to the feeding point, and the first NFC antenna 301 is connected to the matching circuit 40 to form a coil-shaped loop. This application utilizes the spool structure of spool screen 20 to carry out the design of NFC antenna, sets up the NFC antenna on spool screen 20, and the NFC antenna forms coil type return circuit when spool screen 20 is in the coiling state to realize the NFC antenna function, because the NFC antenna can expand along with the expansion of spool screen 20, two convolutes of coiling, need not make the coil type, consequently can reduce the area occupied of NFC antenna.
In one embodiment of the present application, the first NFC antenna 301 is disconnected from the matching circuit 40 with the reel screen 20 in the second state.
That is, under the condition that the scroll screen 20 is in the unfolded state, the contact point of the NFC antenna is disconnected from the feed point of the matching circuit 40, and at this time, the NFC antenna may be unfolded, for example, straightened or the like, along with the unfolding of the scroll screen 20, and at this time, the NFC antenna does not have an NFC function, and does not affect the normal use of the screen.
In one possible embodiment of the present application, the first NFC antenna 301 is disposed at one end of the scroll screen 20 perpendicular to the scroll axis of the scroll screen 20.
That is, the first NFC antenna 301 may be disposed at any position of the scroll screen 20, and for the convenience of use by the user, and at the same time, the magnetic field intensity of the NFC antenna is greater, the first NFC antenna 301 may be disposed at either end perpendicular to the scroll line of the scroll screen 20, that is, at either end perpendicular to the scroll line when the scroll screen 20 is unfolded. Thus, when the scroll screen 20 is in a winding state, the first NFC antenna 301 may be wound into a coil and located on one of the two end faces perpendicular to the scroll line, which is convenient for a user to use.
When the scroll screen 20 is in the winding state, if the user holds the wound scroll screen 20, the function of NFC is not affected, NFC can be normally used, and the operation is convenient.
In one possible embodiment of the present application, the near field communication circuit may further comprise at least one second NFC antenna 302.
Specifically, the second NFC antenna 302 and the first NFC antenna 301 are arranged at an interval; a first terminal of the second NFC antenna 302 is connected to a first terminal of the first NFC antenna 301, and a second terminal of the second NFC antenna 302 is grounded, so that the second NFC antenna 302 is connected in parallel with the first NFC antenna 301.
That is, the near field communication circuit further includes at least one second NFC antenna 302 connected in parallel with the first NFC antenna 301, and since the generated currents are in the same direction, the magnetic fields are superposed in the same direction, so that the magnetic field strength can be enhanced, and the NFC performance can be further improved.
The number of the second NFC antennas 302 may be one, two, or more, and may be set according to actual requirements, which is not specifically limited in this embodiment of the application.
When the number of the second NFC antennas 302 is multiple, the multiple second NFC antennas 302 are all arranged at intervals, so that the formed NFC coils do not interfere with each other, and the purpose of increasing the magnetic field strength is achieved.
Further, the first NFC antenna 301 is disposed at one end of the scroll screen 20 perpendicular to the scroll axis of the scroll screen 20; the second NFC antenna 302 is parallel to the first NFC antenna 301 in the direction of extension of the roll axis.
That is, when the scroll screen 20 is in a winding state, the first NFC antenna 301 and the second NFC antenna 302 are both wound into coils, and the planes of the two coils are arranged in parallel, so that the magnetic field intensity is further enhanced.
Further, if the number of the second NFC antennas 302 is multiple, the multiple second NFC antennas 302 may be disposed in parallel with the first NFC antenna 301, so as to achieve the purpose of enhancing the magnetic field strength.
In one possible embodiment of the present application, the near field communication circuit may further include a third NFC antenna 303 and the switch 60, wherein the third NFC antenna 303 is a coil-type antenna.
Specifically, a first end of the third NFC antenna 303 is connected to the first end of the switch 60, a second end of the third NFC antenna 303 is connected to the feeding point, and a second end of the switch 60 is grounded.
When the scroll screen 20 is in the first state, the switch 60 is turned off, and the first NFC antenna 301 is in the working state; in the case where the reel screen 20 is in the second state, the changeover switch 60 is closed, and the third NFC is in the operating state.
That is, in addition to the above-described NFC antenna capable of implementing the NFC function when the scroll screen 20 is in the rolled state, the present application also includes an NFC antenna capable of implementing the NFC function when the scroll screen 20 is in the unrolled state, that is, the third NFC antenna 303.
In order to improve the NFC performance of spool screen 20 under coiling and the state of expanding simultaneously, when detecting the spool screen and expanding, change over switch 60 is closed, third NFC antenna 303 is in operating condition, can solve the problem that only first NFC antenna 301 and spool screen can't use NFC when being the coiling state, when detecting spool screen 20 and coiling, change over switch 60 disconnection, first NFC antenna 301 is in operating condition, thereby can eliminate the shielding of hand to side NFC when the user holds the spool screen, the first NFC antenna 301 that can directly use one end carries out NFC's read-write function.
According to the embodiment of the application, the NFC antenna can be used when the scroll screen 20 is in the unfolding state, so that the use of a user is facilitated, and the user experience is improved.
In one possible embodiment of the present application, the third NFC antenna 303 is provided between both end surfaces in the extending direction of the roll axis of the roll screen 20.
That is, the third NFC antenna 303 may be disposed on a side surface of the scroll screen 20 in the rolled state, so that when the scroll screen 20 is in the unrolled state, the third NFC antenna 303 may be directly utilized to implement the NFC function.
In one possible embodiment of the present application, a plurality of third NFC antennas 303 may also be included to further increase the magnetic field strength.
The number of the plurality of the optical fibers can be two, three or more, and can be defined according to actual requirements.
The embodiment of the application further provides an electronic device, which comprises a shell 10, a scroll screen 20 and the near field communication circuit provided by any one of the above embodiments. The scroll screen 20 is switchable between a first state and a second state, and in the first state, the scroll screen 20 is in a winding state and is wound in the housing 10; in the second state, the scroll screen 20 is in the expanded state.
In the embodiment of the present application, the electronic device includes a housing 10, a scroll screen 20, and a near field communication circuit, wherein the scroll screen 20 is switchable between a first state and a second state, the scroll screen 20 is in a winding state and is wound in the housing 10 in the first state, and the scroll screen 20 is in an unfolding state in the second state. The design of NFC antenna is carried out to this application utilization spool screen 20's spool structure, sets up the NFC antenna on spool screen 20, and the NFC antenna forms coil type return circuit when spool screen 20 is in the coiling state to the NFC antenna function of the electronic equipment that realizes having spool screen 20.
It should be noted that, because the NFC antenna is disposed at one end of the scroll screen 20 perpendicular to the scroll axis of the scroll screen 20, when the housing 10 is a metal housing 10, the NFC antenna may not be affected by shielding of a metal shell, and the NFC antenna is disposed at one end, so that interference to other circuits inside the electronic device may be greatly reduced.
In one possible embodiment of the present application, the electronic device may further include: a first metal sheet 501 and a second metal sheet 502.
Specifically, the first metal sheet 501 is disposed inside the housing 10 and electrically connected to the feeding point; the second metal sheet 502 is disposed on a side of the scroll screen 20 away from the display surface, and is electrically connected to the contact point; in the case where the spool screen 20 is in the first state, the first metal sheet 501 and the second metal sheet 502 are contact-connected.
That is, by setting up the metal sheets at the feed point and the contact point, when the scroll screen 20 is in the winding state, the feed point and the contact point can be connected through two metal sheets, and because of the increase of the contact area, the feed point and the contact point can be better connected, avoiding that the feed point and the contact point can not be contacted because the area of the feed point and the contact point is smaller, and the condition that the NFC function cannot be used appears.
Further, a second metal sheet 502 is provided at an end of the scroll screen 20 away from the casing 10 in the second state.
That is, the second metal sheet 502 is disposed at one end of the scroll screen 20 far away from the housing 10 when the scroll screen 20 is unwound, so that the number of turns of the coil formed by the NFC antenna is larger when the scroll screen 20 is in a winding state, and the magnetic field strength is enhanced.
The electronic device provided by the embodiment of the application can realize the functions of the near field communication circuit, can achieve the same effect, and is not repeated here for avoiding repetition.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A near field communication circuit is applied to electronic equipment, and is characterized in that the electronic equipment comprises a scroll screen, wherein the scroll screen is switchable between a first state and a second state, and in the first state, the scroll screen is in a winding state; in the second state, the reel screen is in an unfolded state, and the near field communication circuit comprises:
a matching circuit comprising a feed point and a ground point;
the first NFC antenna is arranged on the scroll screen, one end of the first NFC antenna is provided with a contact point, and the other end of the first NFC antenna is grounded;
wherein, under the condition that the scroll screen is in the first state, the contact point is connected with the feeding point, and the first NFC antenna is connected with the matching circuit to form a coil-shaped loop.
2. The near field communication circuit of claim 1, wherein the first NFC antenna is disconnected from the matching circuit with the reel screen in the second state.
3. The NFC circuit of claim 1, wherein the first NFC antenna is disposed at an end of the roll screen perpendicular to a roll axis of the roll screen.
4. The near field communication circuit of claim 1, further comprising at least one second NFC antenna;
the second NFC antenna and the first NFC antenna are arranged at intervals;
and the first end of the second NFC antenna is connected with the first end of the first NFC antenna, and the second end of the second NFC antenna is grounded, so that the second NFC antenna is connected with the first NFC antenna in parallel.
5. The near field communication circuit of claim 4, wherein the first NFC antenna is disposed at one end of the scroll screen perpendicular to a scroll axis of the scroll screen;
the second NFC antenna is parallel to the first NFC antenna in the direction of extension of the roll axis.
6. The near field communication circuit of claim 1, further comprising a third NFC antenna and a switch, the third NFC antenna being a coil antenna;
the first end of the third NFC antenna is connected with the first end of the selector switch, and the second end of the third NFC antenna is connected with the feed point;
the second end of the change-over switch is grounded;
under the condition that the scroll screen is in the first state, the change-over switch is switched off, and the first NFC antenna is in a working state; and under the condition that the scroll screen is in the second state, the change-over switch is closed, and the third NFC is in a working state.
7. The NFC circuit of claim 6, wherein the third NFC antenna is disposed between two end surfaces along an extending direction of a roll axis of the roll screen.
8. An electronic device comprising a housing, a reel screen and the near field communication circuit of any of claims 1-7, the reel screen being switchable between a first state and a second state, the reel screen being in a rolled state and rolled within the housing in the first state; in the second state, the scroll screen is in an expanded state.
9. The electronic device of claim 8, further comprising: a first metal sheet and a second metal sheet;
the first metal sheet is arranged inside the shell and is electrically connected with the feed point;
the second metal sheet is arranged on one side of the scroll screen, which is far away from the display surface, and is electrically connected with the contact point;
the first metal sheet and the second metal sheet are connected in contact with each other in a state where the reel screen is in the first state.
10. The electronic device according to claim 9, wherein the second metal sheet is provided at an end of the scroll screen away from the housing in the second state.
CN202110311730.3A 2021-03-24 2021-03-24 Near field communication circuit and electronic equipment Active CN113067120B (en)

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CN113904091A (en) * 2021-09-30 2022-01-07 维沃移动通信有限公司 Electronic equipment
CN113964514A (en) * 2021-10-26 2022-01-21 维沃移动通信有限公司 Electronic device

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CN109788092A (en) * 2018-12-29 2019-05-21 Oppo广东移动通信有限公司 Electronic equipment

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CN107547470A (en) * 2016-06-24 2018-01-05 中兴通讯股份有限公司 Mobile terminal and NFC pay control method
CN112448130B (en) * 2019-09-05 2023-07-04 北京小米移动软件有限公司 Electronic equipment
CN110716664A (en) * 2019-09-29 2020-01-21 维沃移动通信有限公司 Touch screen and electronic equipment

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CN109788092A (en) * 2018-12-29 2019-05-21 Oppo广东移动通信有限公司 Electronic equipment

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