WO2021114348A1 - 一种移动终端 - Google Patents

一种移动终端 Download PDF

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Publication number
WO2021114348A1
WO2021114348A1 PCT/CN2019/126544 CN2019126544W WO2021114348A1 WO 2021114348 A1 WO2021114348 A1 WO 2021114348A1 CN 2019126544 W CN2019126544 W CN 2019126544W WO 2021114348 A1 WO2021114348 A1 WO 2021114348A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile terminal
conductive
antenna
conductive strip
slit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/126544
Other languages
English (en)
French (fr)
Inventor
陈卫
黄毅
陈志伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou TCL Mobile Communication Co Ltd
Original Assignee
Huizhou TCL Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huizhou TCL Mobile Communication Co Ltd filed Critical Huizhou TCL Mobile Communication Co Ltd
Priority to US17/616,680 priority Critical patent/US12107980B2/en
Publication of WO2021114348A1 publication Critical patent/WO2021114348A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0277—Details of the structure or mounting of specific components for a printed circuit board assembly
    • 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components

Definitions

  • This application relates to the technical field of electronic equipment, and in particular to a mobile terminal.
  • the mobile terminal is an important radio communication equipment, and the antenna of the mobile terminal is a necessary condition for the mobile terminal to realize radio communication. It carries the important functions of the mobile terminal to send and receive signals, and it is also an important factor in the communication quality of the mobile terminal. .
  • the antennas of mobile terminals are generally implemented by FPC (flexible circuit board) antennas or LDS (laser direct molding) antennas.
  • FPC flexible circuit board
  • LDS laser direct molding
  • This application provides a mobile terminal to reduce the material cost of the mobile terminal antenna.
  • the mobile terminal includes: a front housing, the front housing includes a main body and a conductive ground plate installed on the main body, the conductive ground plate is provided with a cut on the side , The cut is used to separate the conductive strip as an antenna from the conductive ground plate; wherein the cut includes a first slot and a second slot connected, the first slot and the second slot are not in a straight line, and one end of the conductive strip is a free end , The other end is connected to the remaining conductive ground plate.
  • first slit and the second slit are connected in an L shape.
  • the length of the conductive strip ranges from 30 to 50 mm.
  • the width of the conductive strip is in the range of 3 to 5 mm.
  • the distance between the conductive bar and the upper end of the mobile terminal is smaller than the distance between the conductive bar and the lower end of the mobile terminal.
  • the main body is an insulating plate
  • the insulating plate is provided with an embedding groove
  • the conductive ground plate is embedded in the embedding groove.
  • the mobile terminal further includes a circuit board under the front housing and a connecting elastic piece between the front housing and the circuit board.
  • One end of the connecting elastic piece is electrically connected to the circuit board, and the other end is electrically connected to the conductive strip.
  • the circuit board is provided with an antenna matching circuit, and the antenna matching circuit is electrically connected to the conductive strip through the connecting elastic sheet.
  • the number of incisions is one or more.
  • the number of cuts is multiple, and the multiple cuts are distributed on two adjacent sides or two opposite sides of the conductive ground plate at intervals.
  • the embodiments of the present application also provide a mobile terminal, the mobile terminal includes: a front housing, the front housing includes a main body and a conductive ground plate installed on the main body, the conductive ground plate is provided on the side Incision, the incision is used to separate the conductive strip as the antenna from the conductive ground plate.
  • the incision includes a first slit and a second slit connected, and the first slit and the second slit are not in a straight line.
  • first slit and the second slit are connected in an L shape.
  • one end of the conductive strip is a free end, and the other end is connected to the remaining conductive ground plate.
  • the length of the conductive strip ranges from 30 to 50 mm.
  • the width of the conductive strip is in the range of 3 to 5 mm.
  • the distance between the conductive bar and the upper end of the mobile terminal is smaller than the distance between the conductive bar and the lower end of the mobile terminal.
  • the main body is an insulating plate
  • the insulating plate is provided with an embedding groove
  • the conductive ground plate is embedded in the embedding groove.
  • the mobile terminal further includes a circuit board under the front housing and a connecting elastic piece between the front housing and the circuit board.
  • One end of the connecting elastic piece is electrically connected to the circuit board, and the other end is electrically connected to the conductive strip.
  • the circuit board is provided with an antenna matching circuit, and the antenna matching circuit is electrically connected to the conductive strip through the connecting elastic sheet.
  • the mobile terminal provided by the present application includes a front housing, the front housing includes a main body and a conductive ground plate installed on the main body, and a cut is provided on the side of the conductive ground plate The notch is used to separate the conductive strip as the antenna from the conductive grounding plate, so that the existing conductive grounding plate in the front housing of the mobile terminal can be used to realize the antenna without the need for antenna materials and antenna brackets, thereby reducing The material cost of the mobile terminal antenna.
  • FIG. 1 is a schematic structural diagram of a mobile terminal provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the structure of the conductive ground plate in FIG. 1;
  • FIG. 3 is another schematic structural diagram of a mobile terminal provided by an embodiment of the present application.
  • Fig. 4 is an exploded view of the mobile terminal in Fig. 3;
  • Fig. 5 is a schematic structural diagram of the electrical connection between the conductive ground plate and the circuit board in Fig. 3.
  • the features defined with “first” and “second” may explicitly or implicitly include at least one of the features.
  • the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Is not within the scope of protection required by this application.
  • the antennas of mobile terminals are generally implemented by FPC (flexible circuit board) antennas or LDS (laser direct molding).
  • FPC flexible circuit board
  • LDS laser direct molding
  • the implementation of such mobile terminal antennas requires antenna materials and corresponding antenna brackets, which will lead to materials The problem of higher cost.
  • the technical solution adopted in this application is to provide a mobile terminal to reduce the material cost of the mobile terminal antenna.
  • FIG. 1 is a schematic structural diagram of a mobile terminal provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a conductive ground plate in FIG.
  • the mobile terminal 10 includes a front housing 11, the front housing 11 includes a main body 111 and a conductive ground plate 112 installed on the main body 111, wherein a cut is provided on the side of the conductive ground plate 112 1121.
  • the cutout 1121 is used to separate the conductive strip 1122 as an antenna from the conductive ground plate 112.
  • the mobile terminal in this embodiment includes a front housing.
  • the front housing includes a main body and a conductive ground plate mounted on the main body.
  • the conductive strip as the antenna is separated in the ground plate, so that the existing conductive ground plate in the front housing of the mobile terminal can be used to realize the antenna without the need for antenna materials and antenna brackets, thereby reducing the material cost of the mobile terminal antenna .
  • the mobile terminal 10 includes a front housing 11, the front housing 11 includes a main body 111 and a conductive ground plate 112 installed on the main body 111, wherein the conductive ground plate 112 is provided with a cut on the side 1121.
  • the cutout 1121 is used to separate the conductive strip 1122 as an antenna from the conductive ground plate 112.
  • the material of the conductive ground plate 112 may be a metal conductive material, such as a metal conductive material such as stainless steel, iron, copper, aluminum alloy, magnesium alloy, magnesium aluminum alloy, or zinc alloy, etc., wherein the main body 111 may be an insulating plate 111
  • the material of the insulating plate 111 can be an insulating material such as plastic, rubber, etc., and the insulating plate 111 can also be provided with an embedded groove (not shown in the figure), and the conductive ground plate 112 is embedded in the embedded groove, wherein When the conductive grounding plate 112 is embedded in the insertion groove of the insulating plate 111, the cutout 1121 on the side of the conductive grounding plate 112 will be filled by the insulating plate 111.
  • the conductive ground plate 112 in the front housing 11 can not only realize the grounding of the electronic components inside the mobile terminal 10, but also ensure the structural strength of the front housing 11.
  • the insulating plate 111 and the conductive ground plate 112 may be integrally formed by in-mold injection molding to obtain the front housing 11.
  • the conductive grounding plate 112 may also be provided with positioning holes 1123, and the main body 111 is formed with a nut 1111 at the positioning hole 1123 of the conductive grounding plate 112, and the nut 1111 penetrates The main body 111 reaches the positioning hole 1123 on the conductive grounding plate 112.
  • screws and nuts 1111 can be used to cooperate to fix the motherboard of the mobile terminal with screw holes on the front housing 11 Or fix the rear housing of the mobile terminal 10 with screw holes on the front housing 11.
  • the antenna of the mobile terminal 10 is realized.
  • the realization of this mobile terminal antenna The method utilizes the existing conductive ground plate 112 in the front housing 10 of the mobile terminal, without separately providing antenna consumables, thereby reducing the material cost of the mobile terminal antenna.
  • the number of cuts 1121 provided on the side of the conductive ground plate 112 is not limited.
  • one or more notches 1121 may be provided on the side of the conductive ground plate 112 according to actual needs.
  • the multiple cuts 1121 may be distributed at intervals on the same side of the conductive ground plate 112, or may be distributed at intervals on the conductive ground plate 112.
  • the grounding plate 112 may be distributed on two adjacent sides or two opposite sides of the ground plate 112 at intervals, or may also be distributed on three or four consecutively connected sides of the conductive ground plate 112 described above.
  • the distance between the conductive strip 1122 as the antenna and the upper end of the mobile terminal 10 can be set to be smaller than the conductive strip 1122 as the antenna.
  • the distance from the lower end of the mobile terminal 10, that is, the above-mentioned conductive strip 1122 as an antenna can be arranged in the upper end of the mobile terminal 10 or at a position close to the upper end of the mobile terminal 10.
  • the lower end or the lower half of the mobile terminal 10 is held by hand, so when the conductive strip 1122 as an antenna is placed in the upper end of the mobile terminal 10 or close to the upper end of the mobile terminal 10, the user’s hand of the mobile terminal 10
  • the conductive strip 1122 as the antenna will not be easily blocked, thereby ensuring the antenna performance of the mobile terminal 10 when it is held by the user.
  • the above-mentioned upper end and lower end are opposite.
  • the lower end refers to a position close to the bottom of the mobile terminal 10
  • the upper end refers to a position close to the top of the mobile terminal 10.
  • the bottom and top generally refer to the bottom or top when the mobile terminal 10 is normally used by the user.
  • the cuts 1121 on the side of the conductive grounding plate 112 are arranged at a certain distance from the four corners of the conductive grounding plate 112 to ensure the integrity of the conductive grounding plate 112 at the four corners.
  • the rigidity of the conductive ground plate 112 can thereby provide a cutout 1121 on the side of the conductive ground plate 112 to realize the antenna of the mobile terminal 10 while ensuring the structural strength of the front housing 11 described above.
  • the cut 1121 on the side of the conductive ground plate 112 is located on the right side of the conductive ground plate 112, the cut 1121 on the side of the conductive ground plate 112 and the conductive ground plate 112
  • the distance between the upper right corners may be 10-15 mm, so as to ensure the antenna performance of the mobile terminal 10 while also ensuring the structural strength of the front housing 11 of the mobile terminal 10.
  • the right side and upper right corner of the conductive ground plate 112 generally refer to the right side and upper right corner of the conductive ground plate 112 when the mobile terminal 10 is used normally by a user.
  • the cut 1121 on the side of the conductive ground plate 112 may specifically include a first slit 1121A and a second slit 1121B that are connected, and the first slit 1121A and the second slit 1121B are absent.
  • the first gap 1121A can first extend a distance D1 along the width direction of the conductive strip 1122 from the side of the conductive ground plate 112, and then extend a distance D2 along the length direction of the conductive strip 1122 to obtain The above-mentioned notch 1121.
  • the first slit 1121A and the second slit 1121B may be connected in an L shape, and the distance D1 that the first slit 1121A extends may be smaller than the distance D2 that the second slit 1121B extends, that is, the first slit 1121B extends.
  • the distance D1 that a slot 1121A extends can be the same as the width of the conductive strip 1122 described above as an antenna, and the difference between the distance D2 that the second slot 1121B extends and the width of the first slot 1121A can be the same as that of the conductive strip 1122 described above as an antenna.
  • the lengths of the bars 1122 are the same.
  • the widths of the first slit 1121A and the second slit 1121B of the slit 1121 are too large to affect the rigidity of the conductive ground plate 112, in this embodiment, it is possible to avoid affecting the rigidity of the conductive ground plate 112.
  • the widths of the first slot 1121A and the second slot 1121B of the above-mentioned notch 1121 are reduced as much as possible.
  • the first slot 1121A of the above-mentioned notch 1121 may be 2.5-4 mm.
  • the length of the conductive strip 1122 as an antenna in the conductive ground plate 112 can be adjusted according to the antenna frequency band that needs to be implemented in actual situations.
  • the length of the conductive strip 1122 as an antenna in the conductive ground plate 112 may range from 30 to 50 mm, and the width of the conductive strip 1122 as an antenna in the conductive ground plate 112 may range from 3 ⁇ 5 mm.
  • a plurality of cutouts 1121 can be provided on the side of the conductive ground plate 112 to separate more from the conductive ground plate 112.
  • this embodiment only provides a cut 1121 for separating a conductive strip 1122 from the conductive ground plate 112 as an example, in other embodiments, a cut 1121 can also be used for Two or more conductive bars 1122 are separated from the conductive ground plate 112 described above.
  • one end of the conductive strip 1122 as an antenna in the conductive ground plate 112 may be a free end, and the other end may be connected to the remaining conductive ground plate 112.
  • the remaining conductive ground plate 112 refers to the other part of the conductive ground plate 112 except the conductive strip 1122 as the antenna, specifically, the conductive strip 1122 as the antenna in the conductive ground plate 112 and the remaining conductive
  • the connection of the ground plate 112 can realize the grounding of the antenna, that is, the end of the conductive ground plate 112 as the antenna where the conductive strip 1122 is connected to the remaining conductive ground plate 112 is equivalent to the antenna location. In addition, it can be selected to be located at the antenna as the antenna.
  • the free end of the conductive strip 1122 or a point or a region close to the antenna location of the conductive strip 1122 as an antenna serves as an antenna feed point.
  • FIG. 3 is a schematic diagram of the back structure of a mobile terminal provided by an embodiment of the present application
  • FIG. 4 is an exploded view of the mobile terminal in FIG. 3
  • FIG. 5 is a conductive connection in FIG.
  • the schematic diagram of the electrical connection between the floor and the circuit board, as shown in FIGS. 3 to 5, the mobile terminal 10 may also include a circuit board 12 located below the front housing 11, and a circuit board 12 located under the front housing 11 and the circuit board 12.
  • One end of the connecting spring 13 is electrically connected to the circuit board 12, and the other end is in electrical contact with a conductive strip 1122 located in the front housing 11 as an antenna.
  • the circuit board 12 may also be provided with an antenna feeder (not shown in the figure), one end of the connecting spring 13 may be electrically connected to the antenna feeder on the circuit board 12, and the other end may be connected to the conductive ground plate 112.
  • the conductive strip 1122 as the antenna is in electrical contact.
  • the antenna feeder on the circuit board 12 can transmit the electromagnetic wave signal to the conductive strip 1122 as the antenna in the conductive grounding plate 112 through the connecting spring 13, so as to radiate energy out.
  • the antenna feeder on the circuit board 12 can also obtain the signal received by the conductive strip 1122 as the antenna in the conductive ground plate 112 through the connecting elastic piece 13.
  • an antenna matching circuit (not shown in the figure) may also be provided on the circuit board 12.
  • the antenna matching circuit is electrically connected to the conductive strip 1122 as an antenna in the conductive ground plate 112 through the connecting elastic sheet 13.
  • the antenna feeder on the circuit board 12 and the antenna matching circuit may be electrically connected, and the connecting spring 13 is directly connected to the electrically connected antenna feeder and the antenna matching circuit in the antenna matching circuit, and is directly connected to the antenna feeder therein. They are connected at intervals by an antenna matching circuit.
  • the impedance of the conductive strip 1122 as the antenna in the conductive ground plate 112 can be realized. Matching, thereby ensuring good antenna performance of the mobile terminal 10.
  • the antenna matching antenna may include a ⁇ -type impedance matching circuit and/or a double L-type impedance matching circuit.
  • the antenna matching circuit may include at least one capacitor and at least one inductor. Appropriate capacitance and inductance values are used to achieve impedance matching to the antenna of the selected frequency band.
  • the antenna frequency band that the mobile terminal 10 needs to implement may include 2G (900MHz), 4G (700-2600MHz), WIFI and Bluetooth (2.4GHz) or GPS (1.5GHz).
  • the connecting elastic piece 13 can be electrically connected to the circuit board 12 by welding, and then the circuit board 12 and the front housing 11 can be fixed as a whole by a fixing method such as a buckle or a screw, so as to realize the above
  • the other end of the connecting elastic piece 13 is in close contact with the conductive strip 1122 as the antenna in the conductive ground plate 112, wherein the connecting elastic piece 13 is in electrical contact with the one end of the conductive strip 1122 as the antenna in the conductive ground plate 112
  • the width of the conductive strip 1122 as the antenna in the conductive ground plate 112 should be large enough.
  • the conductive strip 1122 in the conductive ground plate 112 is used as an antenna. The width can range from 3 to 5 mm.
  • the conductive strip 1122 as an antenna in the conductive ground plate 112 can be specifically used to implement a diversity antenna of the mobile terminal 10, that is, the conductive strip 1122 as an antenna in the conductive ground plate 112 can only receive signals. , And does not emit a signal.
  • an FPC (flexible circuit board) antenna or an LDS (laser direct structuring) can be used to implement it.
  • the main antenna of the mobile terminal 10 can either receive signals or transmit signals.
  • the main antenna of the mobile terminal 10 may be arranged in the lower end of the mobile terminal 10 or in the rear housing of the mobile terminal 10.
  • the mobile terminal 10 adopts the antenna design of the diversity antenna and the main antenna, which can offset the influence of fast fading on the received signal. Since the signal generates multipath component signals due to interference such as reflection during transmission, the receiving end uses multiple antennas to receive different signals at the same time. Path signals, and then select and combine these signals into a total signal to reduce the influence of signal fading. This is called diversity reception. Diversity is to combine the scattered signals together. As long as several signals are independent of each other, The maximum signal gain can be obtained after proper combination.
  • the above-mentioned mobile terminal 10 may further include a rear housing (not shown in the figure) matching the size and shape of the front housing 11, and the circuit board 12 is installed on the front housing 11 and the rear housing. between.
  • the circuit board 12 and the front housing 11 or the rear housing can be fixed in any manner, specifically, they can be fixed by nuts or bolts, and can also be fixed by buckles.
  • the material of the rear housing can be metal, such as aluminum alloy and stainless steel.
  • the metal rear housing has a better appearance.
  • the material of the rear housing can also be plastic, ceramic or glass.
  • the above-mentioned mobile terminal 10 may further include a display screen (not shown in the figure), the display screen is arranged on the front housing 11, and the front housing 11 can provide support for the display screen.
  • the display screen can adopt LCD (Liquid Crystal Display, liquid crystal display) screen is used to display information
  • LCD screen can be TFT (Thin Film Transistor, thin film transistor) screen or IPS (In-Plane Switching, plane switching) screen or SLCD (Splice Liquid Crystal Display, splicing dedicated LCD screen).
  • the display screen may also use an OLED (Organic Light-Emitting Diode, organic electric laser display) screen for displaying information
  • OLED Organic Light-Emitting Diode
  • the OLED screen may be AMOLED (Active Matrix Organic Light Emitting Diode). ) Screen or Super AMOLED (Super Active Matrix OrganicLight Emitting Diode) screen or Super AMOLED Plus (Super Active Matrix Organic Light Emitting Diode Plus, magic screen) screen.
  • the mobile terminal 10 includes, but is not limited to, a smart phone, a tablet computer, and the like.
  • the mobile terminal in this embodiment includes a front housing.
  • the front housing includes a main body and a conductive ground plate mounted on the main body.
  • the conductive strip as the antenna is separated in the ground plate, so that the existing conductive ground plate in the front housing of the mobile terminal can be used to realize the antenna without the need for antenna materials and antenna brackets, thereby reducing the material cost of the mobile terminal antenna .

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Set Structure (AREA)
  • Support Of Aerials (AREA)

Abstract

公开一种移动终端，该移动终端包括前壳体，前壳体包括主体和安装于主体上的导电接地板，导电接地板的侧边上开设有切口，切口用于从导电接地板中分隔出作为天线的导电条。

Description

一种移动终端
本申请要求于2019年12月12日提交中国专利局、申请号为201911271148.8、发明名称为“一种移动终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子设备技术领域，特别涉及一种移动终端。
 背景技术
移动终端是一种重要的无线电通信设备，而移动终端的天线则是移动终端实现无线电通信的必要条件，它承载着移动终端发送信号和接收信号的重要功能，也是移动终端通信质量的重要影响因素。
目前，移动终端的天线一般会采用FPC（柔性电路板）天线或LDS（激光直接成型）天线来实现，但是，这种移动终端的天线实现方式需要天线物料、以及相应的天线支架，从而会导致材料成本较高的问题。
 技术问题
本申请提供一种移动终端，以降低移动终端天线的材料成本。
 技术解决方案
为了解决上述问题，本申请实施例提供了一种移动终端，该移动终端包括：前壳体，前壳体包括主体和安装于主体上的导电接地板，导电接地板的侧边上开设有切口，切口用于从导电接地板中分隔出作为天线的导电条；其中，切口包括相连的第一缝隙和第二缝隙，第一缝隙和第二缝隙不在一条直线上，导电条的一端为自由端，另一端与剩余的导电接地板连接。
其中，第一缝隙和第二缝隙呈L形连接。
其中，导电条的长度的范围为30~50 mm。
其中，导电条的宽度的范围为3~5 mm。
其中，导电条与移动终端的上端部之间的距离小于导电条与移动终端的下端部之间的距离。
其中，主体为绝缘板，绝缘板上设有嵌入槽，导电接地板嵌设于嵌入槽中。
其中，移动终端还包括位于前壳体下方的线路板、以及位于前壳体和线路板之间的连接弹片，连接弹片的一端与线路板电连接，另一端与导电条电接触。
其中，线路板上设有天线匹配电路，天线匹配电路通过连接弹片与导电条电连接。
其中，切口的数量为一个或多个。
其中，切口的数量为多个，多个切口间隔分布于导电接地板相邻的两条侧边上或相对的两条侧边上。
为了解决上述问题，本申请实施例还提供了一种移动终端，该移动终端包括：前壳体，前壳体包括主体和安装于主体上的导电接地板，导电接地板的侧边上开设有切口，切口用于从导电接地板中分隔出作为天线的导电条。
其中，切口包括相连的第一缝隙和第二缝隙，第一缝隙和第二缝隙不在一条直线上。
其中，第一缝隙和第二缝隙呈L形连接。
其中，导电条的一端为自由端，另一端与剩余的导电接地板连接。
其中，导电条的长度的范围为30~50 mm。
其中，导电条的宽度的范围为3~5 mm。
其中，导电条与移动终端的上端部之间的距离小于导电条与移动终端的下端部之间的距离。
其中，主体为绝缘板，绝缘板上设有嵌入槽，导电接地板嵌设于嵌入槽中。
其中，移动终端还包括位于前壳体下方的线路板、以及位于前壳体和线路板之间的连接弹片，连接弹片的一端与线路板电连接，另一端与导电条电接触。
其中，线路板上设有天线匹配电路，天线匹配电路通过连接弹片与导电条电连接。
 有益效果
本申请的有益效果是：区别于现有技术，本申请提供的移动终端，包括前壳体，前壳体包括主体和安装于主体上的导电接地板，导电接地板的侧边上开设有切口，切口用于从导电接地板中分隔出作为天线的导电条，从而，能够利用移动终端前壳体中现有的导电接地板来实现天线，而无需天线物料，也无需天线支架，进而能够降低移动终端天线的材料成本。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的移动终端的结构示意图；
图2是图1中的导电接地板的结构示意图；
图3是本申请实施例提供的移动终端的另一结构示意图；
图4是图3中移动终端的爆炸图；
图5是图3中导电接地板与线路板之间电连接的结构示意图。
 本发明的实施方式
下面结合附图和实施例，对本申请作进一步的详细描述。特别指出的是，以下实施例仅用于说明本申请，但不对本申请的范围进行限定。同样的，以下实施例仅为本申请的部分实施例而非全部实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
需要说明，本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
目前，移动终端的天线一般会采用FPC（柔性电路板）天线或LDS（激光直接成型）来实现，但是，这种移动终端的天线实现方式需要天线物料、以及相应的天线支架，从而会导致材料成本较高的问题。为了解决上述技术问题，本申请采用的技术方案是提供一种移动终端，以降低移动终端天线的材料成本。
请参阅图1和图2，图1是本申请实施例提供的移动终端的结构示意图，图2是图1中导电接地板的结构示意图。如图1和图2所示，移动终端10包括前壳体11，前壳体11包括主体111和安装于主体111上的导电接地板112，其中，导电接地板112的侧边上开设有切口1121，切口1121用于从导电接地板112中分隔出作为天线的导电条1122。
区别于现有技术，本实施例中的移动终端，包括前壳体，前壳体包括主体和安装于主体上的导电接地板，导电接地板的侧边上开设有切口，切口用于从导电接地板中分隔出作为天线的导电条，从而，能够利用移动终端前壳体中现有的导电接地板来实现天线，而无需天线物料，也无需天线支架，进而能够降低移动终端天线的材料成本。
请继续参阅图1和图2，移动终端10包括前壳体11，前壳体11包括主体111和安装于主体111上的导电接地板112，其中，导电接地板112的侧边上开设有切口1121，切口1121用于从导电接地板112中分隔出作为天线的导电条1122。具体地，上述导电接地板112的材质可以为金属导电材料，比如不锈钢、铁、铜、铝合金、镁合金、镁铝合金或锌合金等金属导电材料等，其中，主体111可以为绝缘板111，绝缘板111的材质可以为塑料、橡胶等绝缘材料，并且，该绝缘板111上还可以设有嵌入槽（图中未示出），上述导电接地板112嵌设于该嵌入槽中，其中，当上述导电接地板112嵌设于上述绝缘板111的嵌入槽中时，该导电接地板112侧边上的切口1121会被上述绝缘板111所填充。
在本实施例中，上述前壳体11中的导电接地板112不仅能够实现移动终端10内部的电子元器件的接地，还能够确保前壳体11的结构强度。并且，具体实施时，在上述前壳体11的加工过程中，上述绝缘板111和导电接地板112可以通过模内注塑一体成型而得到该前壳体11。
其中，请继续参阅图1和图2，在上述导电接地板112上还可以设有定位孔1123，并且上述主体111在该导电接地板112的定位孔1123处形成有螺母1111，该螺母1111贯穿上述主体111直至导电接地板112上的定位孔1123，如此，在移动终端10的组装过程中，可以采用螺钉与螺母1111配合，将带有螺丝孔的移动终端的主板固定在上述前壳体11上，或将带有螺丝孔的移动终端10的后壳体固定在上述前壳体11上。
在本实施例中，通过在上述导电接地板112的侧边上开设切口1121，以从上述导电接地板112中分隔出导电条1122，进而实现移动终端10的天线，这种移动终端天线的实现方式利用的是移动终端前壳体10中现有的导电接地板112，而无需单独提供天线耗材，进而能够降低移动终端天线的材料成本。
需要说明的是，虽然本实施例仅给出了一个切口1121作为示例，但是在其他实施例中，上述导电接地板112的侧边上开设的切口1121的数量并不受限制。例如，可根据实际需要，在上述导电接地板112的侧边上可以开设有一个或多个切口1121。另外，当上述导电接地板112的侧边上开设的切口1121的数量为多个时，该多个切口1121可以间隔分布上述导电接地板112的同一条侧边上，也可以间隔分布在上述导电接地板112相邻的两条侧边上或相对的两条侧边上，又或者还可以间隔分布在上述导电接地板112的依次连接的三条或四条侧边上。
并且，在具体实施例时，为了避免由于用户手持移动终端而导致天线性能的降低，可以设置上述作为天线的导电条1122与移动终端10的上端部之间的距离小于该作为天线的导电条1122与移动终端10的下端部之间的距离，也即，可以将上述作为天线的导电条1122设置在移动终端10的上端部中或靠近移动终端10的上端部的位置处，如此，由于用户一般会手持移动终端10的下端部或下半部分，故当将上述作为天线的导电条1122设置在移动终端10的上端部中或靠近移动终端10的上端部的位置处，移动终端10用户的手将不会轻易地对上述作为天线的导电条1122造成遮挡，进而能够确保上述移动终端10被用户手持时的天线性能。需要说明的是，上述上端部和下端部是相对的，一般而言，下端部指的是靠近移动终端10底部的位置，上端部指的是靠近移动终端10顶部的位置，其中，移动终端10的底部和顶部一般指的是当移动终端10被用户正常使用时的底部或顶部。
具体地，为了避免由于在上述导电接地板112的侧边上开设切口1121而对该导电接地板112的刚度造成影响，进而影响上述前壳体11的结构强度，故在本实施例中，可以设置上述导电接地板112的侧边上切口1121的设置位置距离该导电接地板112的四个顶角处一定距离，以确保上述导电接地板112在四个顶角处的完整性，进而能够确保该导电接地板112的刚度，从而，能够在该导电接地板112的侧边上开设切口1121以实现移动终端10的天线的同时，确保上述前壳体11的结构强度。
例如，当上述导电接地板112的侧边上切口1121的设置位置位于该导电接地板112的右侧边上时，上述导电接地板112的侧边上开设的切口1121与该导电接地板112的右上顶角之间的距离可以为10~15 mm，以在确保移动终端10的天线性能的同时，也能够确保移动终端10的前壳体11的结构强度。需要说明的是，上述导电接地板112的右侧边、以及右上顶角一般指的是当上述移动终端10在被用户正常使用时的导电接地板112的右侧边和右上顶角。
在本实施例中，请继续参阅图2，上述导电接地板112的侧边上的切口1121可以具体包括相连的第一缝隙1121A和第二缝隙1121B，且第一缝隙1121A和第二缝隙1121B不在一条直线上，其中，第一缝隙1121A可以先从上述导电接地板112的侧边处沿上述导电条1122的宽度方向延伸距离D1，接着再沿上述导电条1122的长度方向延伸距离D2，以得到上述切口1121。在一个具体实施例中，上述第一缝隙1121A和第二缝隙1121B可以呈L形连接，且上述第一缝隙1121A延伸的距离D1可以小于上述第二缝隙1121B延伸的距离D2，也即，上述第一缝隙1121A延伸的距离D1可以与上述作为天线的导电条1122的宽度大小相同，上述第二缝隙1121B延伸的距离D2与上述第一缝隙1121A的宽度之间的差值可以与上述作为天线的导电条1122的长度大小相同。
其中，为了避免由于上述切口1121的第一缝隙1121A和第二缝隙1121B的宽度过大而影响上述导电接地板112的刚度，故在本实施例中，可以在不影响上述导电接地板112中的作为天线的导电条1122的天线性能的情况下尽可能地减小上述切口1121的第一缝隙1121A和第二缝隙1121B的宽度，例如，在一个具体实施例中，上述切口1121的第一缝隙1121A和第二缝隙1121B的宽度的范围可以为2.5~4 mm。
其中，上述导电接地板112中的作为天线的导电条1122的长度可以根据实际情况中需要实现的天线频段进行调整。在本实施例中，上述导电接地板112中的作为天线的导电条1122的长度L与天线工作频率γ基本上满足：γ=c/(4L)，其中，c为光速。在一个具体实施例中，上述导电接地板112中的作为天线的导电条1122的长度的范围可以为30~50 mm，上述导电接地板112中的作为天线的导电条1122的宽度的范围可以为3~5 mm。
并且，在具体实施时，若需要实现的移动终端10的天线频段有多个时，可以通过在上述导电接地板112的侧边上设置多个切口1121以从该导电接地板112中分隔出多个不同长度的导电条1122，其中，每一需要实现的天线频段均对应有至少一个导电条1122。
另外，需要说明的是，虽然本实施例仅给出了一个切口1121用于从上述导电接地板112中分隔出一个导电条1122作为示例，但是在其他实施例中，一个切口1121还可以用于从上述导电接地板112中分隔出两个或更多个导电条1122。
在本实施例中，上述导电接地板112中的作为天线的导电条1122的一端可以为自由端，另一端可以与剩余的导电接地板112连接。其中，剩余的导电接地板112是指上述导电接地板112中除了上述作为天线的导电条1122之外的其他部分，具体地，上述导电接地板112中的作为天线的导电条1122与剩余的导电接地板112连接能够实现天线的接地，也即，上述导电接地板112中的作为天线的导电条1122与剩余的导电接地板112连接的一端相当于天线地点，另外，可以选择位于上述作为天线的导电条1122的自由端或靠近该作为天线的导电条1122的天线地点的一个点或一个区域作为天线馈点。
在一个具体实施例中，请参阅图3至图5，图3是本申请实施例提供的移动终端的背面结构示意图，图4是图3中移动终端的爆炸图，图5是图3中导电接地板与线路板之间电连接的结构示意图，如图3至图5所示，上述移动终端10还可以包括位于上述前壳体11下方的线路板12、以及位于前壳体11和线路板12之间的连接弹片13，其中，连接弹片13的一端与线路板12电连接，另一端与位于前壳体11中的作为天线的导电条1122电接触。
具体地，上述线路板12上还可以设置有天线馈线（图中未示出），上述连接弹片13的一端可以与线路板12上的天线馈线电连接，另一端可以与上述导电接地板112中的作为天线的导电条1122电接触，如此，上述线路板12上的天线馈线能够通过上述连接弹片13将电磁波信号传送至上述导电接地板112中的作为天线的导电条1122，从而将能量辐射出去，或者，上述线路板12上的天线馈线还能够通过上述连接弹片13获取上述导电接地板112中的作为天线的导电条1122所接收的信号。
在一些具体实施例中，为了实现对上述导电接地板112中的作为天线的导电条1122的天线性能进行调节，上述线路板12上还可以设置有天线匹配电路（图中未示出），该天线匹配电路通过上述连接弹片13与上述导电接地板112中的作为天线的导电条1122电连接。具体地，上述线路板12上的天线馈线和天线匹配电路之间可以电连接，并且上述连接弹片13与电连接的天线馈线和天线匹配电路中的天线匹配电路直接连接，而与其中的天线馈线之间通过天线匹配电路间隔连接，如此，能够在对上述导电接地板112中的作为天线的导电条1122进行馈电的同时，实现对上述导电接地板112中的作为天线的导电条1122的阻抗匹配，进而确保移动终端10的良好的天线性能。
具体地，上述天线匹配天线可以包括π型阻抗匹配电路和/或双L型阻抗匹配电路，其中，上述天线匹配电路可以包括至少一个电容和至少一个电感，并且，在具体实施时，可以通过选择适合的电容值及电感值，来实现对选定频段的天线的阻抗匹配。
需要说明的是，当需要实现的移动终端10的天线频段有多个时，也即，上述导电接地板112中的作为天线的导电条1122的数量为多个时，可以在上述线路板12上设置多个天线匹配电路和多个天线馈线，其中，上述线路板12上的天线匹配电路可以与上述导电接地板112中的作为天线的导电条1122一一对应，上述线路板12上的天线馈线可以与上述导电接地板112中的作为天线的导电条1122一一对应。另外，上述移动终端10需要实现的天线频段可以包括2G（900MHz）、4G（700-2600MHz）、WIFI和蓝牙（2.4GHz）或GPS（1.5GHz）。
在另一些具体实施例中，请继续参阅图5，在上述移动终端10的组装生产过程中，为了实现上述连接弹片13与上述导电接地板112中的作为天线的导电条1122之间的良好电接触，可以首先将上述连接弹片13的一端通过焊接电连接与上述电路板12上，接着再采用卡扣或螺丝等固定方式将上述线路板12和前壳体11固定为一个整体，从而实现上述连接弹片13的另一端与上述导电接地板112中的作为天线的导电条1122之间的紧密接触，其中，上述连接弹片13与上述导电接地板112中的作为天线的导电条1122电接触的一端具有一接触面，也即，该连接弹片13通过接触面与上述导电接地板112中的作为天线的导电条1122的下表面电接触，如此，能够进一步提高上述连接弹片13与上述导电接地板112中的作为天线的导电条1122之间的电接触效果。
并且，为了进一步地提高上述连接弹片13与上述导电接地板112中的作为天线的导电条1122之间的电接触效果，上述导电接地板112中的作为天线的导电条1122的宽度应该足够大，以使上述连接弹片13与上述导电接地板112中的作为天线的导电条1122之间的接触区域能够足够大，在一个具体实施例中，上述导电接地板112中的作为天线的导电条1122的宽度的范围可以为3~5 mm。
在一些实施例中，上述导电接地板112中的作为天线的导电条1122具体可以用于实现移动终端10的分集天线，也即上述导电接地板112中的作为天线的导电条1122仅会接受信号，而并不会发射信号。并且，为了实现移动终端10的主集天线，可以采用FPC（柔性电路板）天线或LDS（激光直接成型）来实现，其中，移动终端10的主集天线即可以接受信号，也可以发射信号，具体地，该移动终端10的主集天线可以设置在移动终端10的下端部中或移动终端10的后壳体中。如此，移动终端10采用分集天线和主集天线的天线设计，能够抵消快衰落对接收信号的影响，由于信号在传输过程中因反射等干扰产生多径分量信号，接收端利用多天线同时接收不同路径的信号，然后将这些信号选择、合并成总的信号，以减轻信号衰落的影响，这叫分集接收，分集就是把分散得到的信号集中合并，只要几个信号之间是相互独立的，经恰当的合并后就能得到最大的信号增益。
在一个具体实施例中，上述移动终端10还可以包括与前壳体11大小和形状相匹配的后壳体（图中未示出），且线路板12安装于前壳体11和后壳体之间。其中，线路板12与前壳体11或后壳体可以通过任意方式固定，具体地，可以通过螺母或螺栓固定，还可以通过卡扣固定。
其中，后壳体的材质可以为金属，比如铝合金和不锈钢，金属材质的后壳具有较好的外观，在其他实施例中，后壳的材质也可以为塑料、陶瓷或玻璃等。
进一步地，上述移动终端10还可以包括显示屏（图中未示出），显示屏设置于前壳体11上，前壳体11可以向显示屏提供支撑。具体地，显示屏可以采用LCD(Liquid Crystal Display，液晶显示)屏用于显示信息，LCD屏可以为TFT(Thin Film Transistor，薄膜晶体管)屏幕或IPS(In-PlaneSwitching，平面转换)屏幕或SLCD(Splice Liquid Crystal Display，拼接专用液晶显示)屏幕。在其他实施方式中，显示屏还可以采用OLED(Organic Light-Emitting Diode，有机电激光显示)屏用于显示信息，OLED屏可以为AMOLED(Active Matrix Organic Light EmittingDiode，有源矩阵有机发光二极体)屏幕或Super AMOLED(Super Active Matrix OrganicLight Emitting Diode，超级主动驱动式有机发光二极体)屏幕或Super AMOLED Plus(Super Active Matrix Organic Light Emitting Diode Plus，魔丽屏)屏幕。
在上述实施例中，移动终端10包括但不限于智能手机和平板电脑等。
区别于现有技术，本实施例中的移动终端，包括前壳体，前壳体包括主体和安装于主体上的导电接地板，导电接地板的侧边上开设有切口，切口用于从导电接地板中分隔出作为天线的导电条，从而，能够利用移动终端前壳体中现有的导电接地板来实现天线，而无需天线物料，也无需天线支架，进而能够降低移动终端天线的材料成本。
以上对本申请实施例所提供的一种移动终端进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种移动终端，其包括：
    前壳体，所述前壳体包括主体和安装于所述主体上的导电接地板，所述导电接地板的侧边上开设有切口，所述切口用于从所述导电接地板中分隔出作为天线的导电条；
    其中，所述切口包括相连的第一缝隙和第二缝隙，所述第一缝隙和所述第二缝隙不在一条直线上，所述导电条的一端为自由端，另一端与剩余的所述导电接地板连接。
  2. 根据权利要求1所述的移动终端，其中，所述第一缝隙和第二缝隙呈L形连接。
  3. 根据权利要求1所述的移动终端，其中，所述导电条的长度的范围为30~50 mm。
  4. 根据权利要求1所述的移动终端，其中，所述导电条的宽度的范围为3~5 mm。
  5. 根据权利要求1所述的移动终端，其中，所述导电条与所述移动终端的上端部之间的距离小于所述导电条与所述移动终端的下端部之间的距离。
  6. 根据权利要求1所述的移动终端，其特征在于，所述主体为绝缘板，所述绝缘板上设有嵌入槽，所述导电接地板嵌设于所述嵌入槽中。
  7. 根据权利要求1所述的移动终端，其中，所述移动终端还包括位于所述前壳体下方的线路板、以及位于所述前壳体和线路板之间的连接弹片，所述连接弹片的一端与所述线路板电连接，另一端与所述导电条电接触。
  8. 根据权利要求7所述的移动终端，其中，所述线路板上设有天线匹配电路，所述天线匹配电路通过所述连接弹片与所述导电条电连接。
  9. 根据权利要求1所述的移动终端，其中，所述切口的数量为一个或多个。
  10. 根据权利要求9所述的移动终端，其中，所述切口的数量为多个，所述多个切口间隔分布于所述导电接地板相邻的两条侧边上或相对的两条侧边上。
  11. 一种移动终端，其包括：
    前壳体，所述前壳体包括主体和安装于所述主体上的导电接地板，所述导电接地板的侧边上开设有切口，所述切口用于从所述导电接地板中分隔出作为天线的导电条。
  12. 根据权利要求11所述的移动终端，其中，所述切口包括相连的第一缝隙和第二缝隙，所述第一缝隙和所述第二缝隙不在一条直线上。
  13. 根据权利要求12所述的移动终端，其中，所述第一缝隙和第二缝隙呈L形连接。
  14. 根据权利要求11所述的移动终端，其中，所述导电条的一端为自由端，另一端与剩余的所述导电接地板连接。
  15. 根据权利要求11所述的移动终端，其中，所述导电条的长度的范围为30~50 mm。
  16. 根据权利要求11所述的移动终端，其中，所述导电条的宽度的范围为3~5 mm。
  17. 根据权利要求11所述的移动终端，其中，所述导电条与所述移动终端的上端部之间的距离小于所述导电条与所述移动终端的下端部之间的距离。
  18. 根据权利要求11所述的移动终端，其特征在于，所述主体为绝缘板，所述绝缘板上设有嵌入槽，所述导电接地板嵌设于所述嵌入槽中。
  19. 根据权利要求11所述的移动终端，其中，所述移动终端还包括位于所述前壳体下方的线路板、以及位于所述前壳体和线路板之间的连接弹片，所述连接弹片的一端与所述线路板电连接，另一端与所述导电条电接触。
  20. 根据权利要求19所述的移动终端，其中，所述线路板上设有天线匹配电路，所述天线匹配电路通过所述连接弹片与所述导电条电连接。
PCT/CN2019/126544 2019-12-12 2019-12-19 一种移动终端 Ceased WO2021114348A1 (zh)

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