CN108321543B - Antenna and electronic equipment - Google Patents
Antenna and electronic equipment Download PDFInfo
- Publication number
- CN108321543B CN108321543B CN201810376383.0A CN201810376383A CN108321543B CN 108321543 B CN108321543 B CN 108321543B CN 201810376383 A CN201810376383 A CN 201810376383A CN 108321543 B CN108321543 B CN 108321543B
- Authority
- CN
- China
- Prior art keywords
- antenna
- control switch
- unit
- element group
- main body
- 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.)
- Active
Links
Images
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses an antenna, comprising: the antenna comprises at least two antenna units, at least two antenna feeders connected with the at least two antenna units and a control unit, wherein each antenna unit comprises an antenna main body, a control switch and a feeding point, the antenna main body is connected with the corresponding antenna feeder through the feeding point, the control switch is connected between the antenna main body and the feeding point, and the control unit is used for controlling the conduction of the control switch of each antenna unit. Correspondingly, the invention also provides the electronic equipment. By adopting the invention, the frequency band bandwidth of the antenna can be improved without changing the current distribution of the antenna.
Description
Technical Field
The present invention relates to the field of antenna technologies, and in particular, to an antenna and an electronic device.
Background
With the popularization of LTE (Long Term Evolution ) technology, the frequency band that the antenna needs to support is also wider and wider. At the same time, the demands of users on the appearance of electronic devices are becoming higher, so that electronic devices are becoming smaller and thinner. In this case, the antenna space of the electronic device is gradually compressed, and the antenna space is substantially proportional to the bandwidth, so that it is difficult to realize a wider frequency band in a smaller antenna space.
In the prior art, a plurality of grounding points are arranged, and the closer the grounding point is to the feeding point, the higher the frequency is, and the resonant length of the antenna is changed by switching among different grounding points, so that the purpose of expanding the frequency band of the antenna is achieved. Fig. 1 is a schematic structural diagram of an antenna in the prior art, and as shown in fig. 1, it is assumed that a switch of a receiving point 1 is closed, a switch of a grounding point 2 is opened, a frequency band which can be radiated by the antenna is F1, the switch of the receiving point 1 is opened, the switch of the grounding point 2 is closed, and a frequency band which can be radiated by the antenna is F2, and since distances between the grounding point and a feeding point are different, F1 and F2 are not equal; however, since each grounding point in the circuit may consume a certain amount of energy, increasing a plurality of grounding points may change the current distribution of the antenna, which may affect the antenna efficiency.
Disclosure of Invention
Embodiments of the present invention provide an antenna and an electronic device, which can improve a bandwidth of a frequency band of the antenna without changing a current distribution of the antenna.
The present invention provides an antenna, comprising:
the antenna comprises at least two antenna units, at least two antenna feeders connected with the at least two antenna units and a control unit, wherein each antenna unit comprises an antenna main body, a control switch and a feeding point, the antenna main body is connected with the corresponding antenna feeder through the feeding point, the control switch is connected between the antenna main body and the feeding point, and the control unit is used for controlling the conduction of the control switch of each antenna unit.
The present invention also provides an electronic device, comprising:
a body and an antenna disposed on the body, the antenna being as claimed in any one of claims 1 to 7.
The invention has the following beneficial effects:
the antenna provided by the invention comprises at least two antenna units, each antenna unit comprises an independent feed point, and the positions of the feed points are different, so that the resonance lengths of the antenna units are different, and further, the resonance points formed by the antenna consisting of a plurality of antenna units can form complementation, thereby meeting the requirement of wider-frequency bandwidth coverage and overcoming the problem of changing the current distribution of the antenna.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of an antenna in the prior art;
fig. 2 is a schematic diagram of an antenna provided in an embodiment of the present invention;
fig. 3 is a schematic diagram of another antenna provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of another antenna provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.
In an embodiment of the present invention, an antenna includes at least two antenna elements, at least two antenna feeders connected to the at least two antenna elements, and a control unit, where the antenna elements include an antenna main body, a control switch, and feeding points, the antenna main body is connected to the corresponding antenna feeders through the feeding points, the control switch is connected between the antenna main body and the feeding points, and the control unit is configured to control whether the control switch of each antenna element is turned on or off, the antenna in an embodiment of the present invention includes at least two antenna elements, each antenna element includes an independent feeding point, and the position of each feeding point can be controlled arbitrarily, so that the resonant lengths of each antenna element are different, and further, the resonant points formed by an antenna composed of a plurality of antenna elements form a complementary structure, thereby satisfying a wider bandwidth coverage, and the problem of changing the current distribution of the antenna is overcome;
for convenience of description, the antenna in the embodiment of the present invention takes two antenna units as an example; referring to fig. 2, fig. 2 is a schematic diagram of an antenna according to an embodiment of the present invention; the antenna 2 in the present embodiment as shown in fig. 2 includes at least: a first antenna unit 21, a second antenna unit 22, a first antenna feeder 23, a second antenna feeder 24 and a control unit 25, where the first antenna unit 21 includes an antenna main body 212, a control switch 212 and a feeding point 213, the antenna main body 212 is connected to the corresponding antenna feeder 23 through the feeding point 213, the control switch 212 is connected between the antenna main body 212 and the feeding point 213, the second antenna unit 22 includes an antenna main body 221, a control switch 222 and a feeding point 223, the antenna main body 221 is connected to the corresponding antenna feeder 23 through the feeding point 223, the control switch 222 is connected between the antenna main body 221 and the feeding point 223, and the control unit 25 is configured to control whether the control switch of each antenna unit is turned on or off;
specifically, each antenna feeder is connected to a signal source, the signal source may generate a multi-band signal, and a signal band that each antenna unit can radiate is preset, and it is assumed that a signal channel that the first antenna unit 21 can radiate is: GSM900MHz, the bandwidth range is 890MHz to 960 MHz; the signal channel radiated by the second antenna unit 22 is GSM850MHz, and the bandwidth ranges from 824MHz to 894 MHz; the signal channels generated by the signal source are GSM900MHz and GSM850MHz, the control unit 15 first controls the control switch 212 to be closed, the control switch 222 to be open, and the signal of the GSM900MHz channel is transmitted through the first antenna unit 21; the control unit 25 controls the control switch 212 to be switched off, the control switch 222 is switched on, signals of a GSM850MHz channel are transmitted through the second antenna unit 22, and the control unit 25 controls each antenna unit to transmit signals in sequence, so that interference among antennas can be reduced; it should be noted that, the closing sequence of the control switch for controlling each antenna unit by the control unit 25 may be adjusted according to the actual situation, and the present invention is not limited thereto;
preferably, the frequency bands that can be radiated by each antenna unit may not coincide, so as to improve the bandwidth of the antenna;
further, the antenna unit may further include a reactance element group, where the reactance element group includes at least two reactance elements, and the at least two reactance elements are connected in parallel between the antenna main body and the control switch, and are used to adjust the resonant frequency of the antenna unit, and if the reactance element group includes only two reactance elements, the two reactance elements are connected in parallel between the antenna main body and the control switch; if the reactance element group includes three or more reactance elements, taking three as an example, two reactance elements may be connected in parallel between the antenna main body and the control switch, and another reactance element may be connected in series with one of the two or more reactance elements, that is, in the reactance element group, at least two reactance elements are connected in parallel between the antenna main body and the control switch, and the connection manner of the remaining reactance elements may be adjusted according to the actual situation.
Wherein the reactive element comprises an inductance or a capacitance;
when the reactance element is an inductor, the value range of the inductor is 1.0-15 nanohenries, the wide coverage frequency band of the antenna can be realized, the radiation efficiency of the antenna can be improved, and the values of the inductors in the same reactance element group are different;
when the reactance element is a capacitor, the value range of the capacitor is 0.5-10 picofarads, the wide coverage frequency band of the antenna can be realized, the radiation efficiency of the antenna can be improved, and the values of the capacitors in the same reactance element group are different.
Optionally, each antenna unit includes the reactance element group, or at least one antenna unit includes the reactance element group, and the specific situation is adjusted according to the actual situation;
referring to fig. 3, fig. 3 is a schematic diagram of another antenna according to an embodiment of the present invention; the first antenna unit 21 in the present embodiment shown in fig. 3 includes a reactance element group 214, and the reactance element group 214 is connected between the antenna main body 211 and the control switch 212, and is used for adjusting the resonance frequency of the antenna unit 21; the antenna body 211 and the control switch 212 in the second antenna unit 22 are directly connected, that is, the second antenna unit 22 does not include a reactive element group; for convenience of description, in the embodiment of the present invention, the reactance element group 214 includes two capacitors as an example;
in a specific implementation, as shown in fig. 3, the reactance element group 214 includes a first capacitor 2141 and a second capacitor 2142, a value range of the first capacitor 2141 and the second capacitor 2142 is 0.5 to 1.0 picofarad, and values of the first capacitor 2141 and the second capacitor 2142 are different, and it is assumed that a frequency band of a signal that the first antenna unit 21 can radiate is: GSM900MHz, that is, the bandwidth range is 890MHz to 960MHz, the frequency band of the first antenna unit 21 can be divided into two parts by the first capacitor 2141 and the second capacitor 2142, and when the control switch 212 is connected to the first capacitor 2141, the frequency band that the first antenna unit 21 can radiate is 890MHz to 930 MHz; when the control switch 212 is connected to the first capacitor 2142, the frequency band that the first antenna unit 21 can radiate is 930MHz to 960 MHz;
the signal frequency band that the first antenna element 21 can radiate is: GSM900MHz, if the first antenna unit 21 is not provided with the reactance element group 214, the frequency of the antenna is controlled to be changed from 890MHz to 960MHz, and the fine tuning range of the antenna is 70 MHz; if the first antenna unit 21 is provided with the reactance element group 214, the fine tuning range can be further controlled to be 40MHz, so that the resonant frequency of the antenna unit can be adjusted by increasing the reactance element group, the adjustment range of the form of the antenna can be reduced, and the implementation difficulty of the antenna can be further reduced.
Further, as shown in fig. 4, the first antenna unit 21 may also be connected in parallel with the reactance element group 214 through a metal trace, and when the radio frequency signal of the antenna is at a low frequency, the control switch 212 may be connected with a corresponding reactance element in the reactance element group 214, so as to achieve a radiation effect at a low frequency band; when the rf signal of the antenna is at high frequency, the control switch 212 may be connected to the metal trace, so as to implement radiation at high frequency band.
Wherein the antenna may comprise a slot antenna.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention; as shown in fig. 5, the electronic device 5 provided in the embodiment of the present invention includes a body 51 and an antenna 52, where the body 51 specifically includes various functional modules, such as a circuit board, a display, a housing of the electronic device, a microphone, a speaker, a home key, a touch area, and the like, so as to complete basic functions of the electronic device, and the antenna 52 includes a slot antenna.
Specific examples of the electronic device include communication electronic devices such as a mobile phone and a tablet computer.
The antenna 51 specifically includes two antenna units, at least two antenna feeders connected to the at least two antenna units, and a control unit, where the antenna units include an antenna main body, a control switch, and a feeding point, the antenna main body is connected to the corresponding antenna feeder through the feeding point, the control switch is connected between the antenna main body and the feeding point, and the control unit is configured to control whether the control switch of each antenna unit is turned on or off;
further, the antenna unit further includes a reactance element group, the reactance element group includes at least two reactance elements, at least two reactance elements are connected between the antenna main body and the control switch in parallel, and are used for adjusting the resonant frequency of the antenna unit;
wherein the reactive element comprises an inductance or a capacitance;
if the reactance element is an inductor, the value range of the inductor is 1.0-15 nanohenries, and the values of the inductors in the same reactance element group are different.
If the reactance element is a capacitor, the value range of the capacitor is 0.5-10 picofarads, and the values of the capacitors in the same reactance element group are different.
Further, the frequency bands capable of being radiated by each antenna unit are not overlapped.
In order to obtain better antenna performance, when the antenna is mounted on an electronic device, the antenna needs to be kept away from the following metal objects, which are preferably well grounded, for example, a distance of 6mm or more: LCD, camera, LCD screen, flex cable of keys, etc., wires connecting oscillator or speaker, metal-containing screws or nuts. The position is preferably the upper part of the battery, and the farther away from the battery, the better. But may of course also be arranged on top of the electronic device.
It is understood that the antenna 52 of the present embodiment may specifically correspond to the related description of the method embodiment in fig. 2 or fig. 4, and is not repeated herein.
It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that acts and modules referred to are not necessarily required to practice embodiments of the invention.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (9)
1. An antenna, characterized by comprising at least two antenna elements, at least two antenna feeders connected with the at least two antenna elements, a control unit connected with the at least two antenna feeders and a signal source, wherein the control unit is connected between the at least two antenna feeders and the signal source;
the antenna unit comprises an independent antenna main body, an independent control switch and an independent feeding point, wherein the antenna main body is connected with the corresponding antenna feeder line through the independent feeding point;
the control unit is used for controlling the conduction of the control switch of each antenna unit.
2. The antenna of claim 1, wherein said antenna unit further comprises a reactive element group, said reactive element group comprising at least two reactive elements, at least two of said reactive elements being connected in parallel between said antenna body and said control switch for adjusting a resonant frequency of said antenna unit.
3. The antenna of claim 2, wherein the antenna body is connected in parallel with the reactive element group through a metal trace, and the control switch is connected to a corresponding reactive element in the reactive element group or connected to the antenna body through the metal trace.
4. The antenna of claim 2, wherein the reactive element comprises an inductance or a capacitance.
5. The antenna of claim 4, wherein when the reactance element is an inductor, the value of the inductor ranges from 1.0 nanohenries to 15 nanohenries, and the values of the inductors in the same reactance element group are different.
6. The antenna of claim 4, wherein when the reactance element is a capacitor, the capacitance has a value in a range of 0.5-10 picofarads, and each of the capacitors in the same reactance element group has a different value.
7. The antenna of claim 1, wherein the antenna comprises a slot antenna.
8. The antenna of claim 1, wherein the frequency bands that each of said antenna elements is capable of radiating do not coincide.
9. An electronic device comprising a body and an antenna, the antenna being disposed on the body, the antenna being as claimed in any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376383.0A CN108321543B (en) | 2015-04-03 | 2015-04-03 | Antenna and electronic equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510159041.XA CN104852152B (en) | 2015-04-03 | 2015-04-03 | A kind of antenna and electronic equipment |
| CN201810376383.0A CN108321543B (en) | 2015-04-03 | 2015-04-03 | Antenna and electronic equipment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510159041.XA Division CN104852152B (en) | 2015-04-03 | 2015-04-03 | A kind of antenna and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108321543A CN108321543A (en) | 2018-07-24 |
| CN108321543B true CN108321543B (en) | 2021-04-16 |
Family
ID=53851610
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510159041.XA Active CN104852152B (en) | 2015-04-03 | 2015-04-03 | A kind of antenna and electronic equipment |
| CN201810376383.0A Active CN108321543B (en) | 2015-04-03 | 2015-04-03 | Antenna and electronic equipment |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510159041.XA Active CN104852152B (en) | 2015-04-03 | 2015-04-03 | A kind of antenna and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104852152B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742812B (en) * | 2016-03-23 | 2019-05-10 | 深圳市万普拉斯科技有限公司 | Mobile terminal and its antenna structure |
| CN105870629A (en) * | 2016-05-23 | 2016-08-17 | 广东欧珀移动通信有限公司 | Terminal antenna and intelligent terminal |
| CN106921044B (en) | 2017-01-22 | 2020-04-21 | Oppo广东移动通信有限公司 | Antenna device and electronic device |
| CN113675592B (en) * | 2020-05-13 | 2023-08-04 | 北京小米移动软件有限公司 | Antenna module and terminal equipment |
| CN114069228B (en) * | 2020-08-07 | 2023-08-22 | 华为技术有限公司 | Antenna power supply system and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5835855A (en) * | 1996-06-12 | 1998-11-10 | 3Com Corporation | Antenna scanning system with low frequency dithering |
| JPH11205206A (en) * | 1998-01-07 | 1999-07-30 | Toshiba Corp | Radio equipment and antenna |
| CN102437418A (en) * | 2011-08-24 | 2012-05-02 | 清华大学 | Broadband planar reconfigurable antenna system for mobile terminal |
| CN203466294U (en) * | 2013-08-22 | 2014-03-05 | 深圳富泰宏精密工业有限公司 | Adjustable antenna and wireless communication device therewith |
| CN103928766A (en) * | 2014-04-11 | 2014-07-16 | 广东欧珀移动通信有限公司 | Mobile phone and antenna thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004048376A (en) * | 2002-07-11 | 2004-02-12 | Asahi Glass Co Ltd | On-glass antenna system for automobile |
| FI116248B (en) * | 2003-02-14 | 2005-10-14 | Flextronics Odm Luxembourg Sa | Antenna arrangement and laptop terminal |
| KR20070068182A (en) * | 2005-12-26 | 2007-06-29 | 주식회사 팬택 | Antenna system for multi band |
| US7825867B2 (en) * | 2007-04-26 | 2010-11-02 | Round Rock Research, Llc | Methods and systems of changing antenna polarization |
| CN101242025A (en) * | 2008-03-12 | 2008-08-13 | 惠州市硕贝德通讯科技有限公司 | An antenna device for dual-frequency mobile phone |
| US20110032159A1 (en) * | 2009-08-04 | 2011-02-10 | Min-Chung Wu | Antenna Apparatus with Adaptive Polarization Switching Function |
| US8988306B2 (en) * | 2011-11-11 | 2015-03-24 | Htc Corporation | Multi-feed antenna |
| CN103872430A (en) * | 2012-12-07 | 2014-06-18 | 联想(北京)有限公司 | Electronic device, antenna and method for making antenna |
| CN103094717B (en) * | 2013-02-19 | 2017-02-15 | 魅族科技（中国）有限公司 | Antenna of terminal device and terminal device |
| CN104300234B (en) * | 2013-07-15 | 2018-03-23 | 联想(北京)有限公司 | Antenna assembly, electronic equipment and the method for controlling the antenna assembly |
| CN104466361B (en) * | 2014-12-10 | 2018-03-30 | 广东欧珀移动通信有限公司 | A kind of mobile phone and its antenna |
| CN205051738U (en) * | 2015-07-14 | 2016-02-24 | 瑞声精密制造科技(常州)有限公司 | Mobile communication device |
-
2015
- 2015-04-03 CN CN201510159041.XA patent/CN104852152B/en active Active
- 2015-04-03 CN CN201810376383.0A patent/CN108321543B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5835855A (en) * | 1996-06-12 | 1998-11-10 | 3Com Corporation | Antenna scanning system with low frequency dithering |
| JPH11205206A (en) * | 1998-01-07 | 1999-07-30 | Toshiba Corp | Radio equipment and antenna |
| CN102437418A (en) * | 2011-08-24 | 2012-05-02 | 清华大学 | Broadband planar reconfigurable antenna system for mobile terminal |
| CN203466294U (en) * | 2013-08-22 | 2014-03-05 | 深圳富泰宏精密工业有限公司 | Adjustable antenna and wireless communication device therewith |
| CN103928766A (en) * | 2014-04-11 | 2014-07-16 | 广东欧珀移动通信有限公司 | Mobile phone and antenna thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108321543A (en) | 2018-07-24 |
| CN104852152A (en) | 2015-08-19 |
| CN104852152B (en) | 2018-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10553932B2 (en) | Mobile device and antenna structure | |
| CN109687111B (en) | Antenna structure and communication terminal | |
| CN108767450B (en) | Antenna system and terminal | |
| CN108321543B (en) | Antenna and electronic equipment | |
| CN103236583B (en) | A kind of novel LTE metal frame antenna strengthening bandwidth | |
| WO2022142824A1 (en) | Antenna system and electronic device | |
| CN103094690B (en) | A kind of loop aerial and associated electronic device | |
| US9088067B2 (en) | Communication device and tunable antenna element therein | |
| CN105811079B (en) | Antenna device and electronic equipment | |
| TWI426746B (en) | Radio-frequency processing device and method and related wireless communication device | |
| CN105375109A (en) | Tunable antenna structure for completely closed metal-frame mobile phone | |
| WO2022142822A1 (en) | Antenna assembly and electronic device | |
| CN102683861A (en) | Tunable loop antennas | |
| CN109346831A (en) | A kind of antenna system and terminal | |
| CN111092295B (en) | Antenna, antenna adjusting method, terminal and storage medium | |
| US10476137B1 (en) | Terminal housing and terminal | |
| CN107645055B (en) | Antenna system and mobile terminal | |
| CN114552181A (en) | Antenna assembly and electronic equipment | |
| CN203398262U (en) | Novel LTE metal-frame antenna with ultra wide band | |
| CN210092344U (en) | Antenna assembly and electronic equipment | |
| US10594022B2 (en) | Triband antenna | |
| US20150091766A1 (en) | Broadband capacitively-loaded tunable antenna | |
| CN107706504B (en) | Mobile terminal antenna supporting full-band coverage | |
| CN108306117B (en) | Antenna system and terminal | |
| CN115411501A (en) | Antenna assembly and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |