CN106532875B - Mobile terminal - Google Patents
Mobile terminal Download PDFInfo
- Publication number
- CN106532875B CN106532875B CN201710026434.2A CN201710026434A CN106532875B CN 106532875 B CN106532875 B CN 106532875B CN 201710026434 A CN201710026434 A CN 201710026434A CN 106532875 B CN106532875 B CN 106532875B
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- China
- Prior art keywords
- mobile terminal
- mainboard
- voltage
- partial pressure
- resistance
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the present invention provides a kind of mobile terminal, including mainboard, control unit and partial pressure unit, when the battery charging complete of the mobile terminal, which controls the partial pressure unit and is electrically connected with the mainboard, so that the partial pressure unit shares part system voltage.The program is in the battery charging complete of mobile terminal, control unit controls partial pressure unit and is electrically connected with mainboard realization, to be loaded into the voltage on mainboard by partial pressure unit sharing system, so that the voltage on mainboard is lower than the safe voltage that can bear, thus mainboard is avoided to be burnt out by high voltage, so as to improve the stability of mainboard, and then the stability of mobile terminal can be improved.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of mobile terminal.
Background technique
Currently, charge function is managed by charging management chip in mobile terminal.When charging to mobile terminal,
Charging management chip exports two-way voltage.Wherein voltage charges to the battery in mobile terminal all the way, and in addition voltage is to move all the way
Dynamic terminal system power supply.It is system power supply by battery after charging complete.
After charging complete, cell voltage reaches full piezoelectric voltage, and cell voltage is higher at this time.When external power supply passes through adapter
When for system power supply or battery being system power supply, system voltage can be higher than cell voltage.And certain components in mobile terminal
Pressure voltage it is relatively low, such as power management integrated circuit (PMIC, Power Management Integrated
Circuit), the lower component of these pressure voltages may be burnt out by system voltage at this time, thereby result in the steady of mobile terminal
It is qualitative low.
Summary of the invention
The embodiment of the present invention provides a kind of mobile terminal, and the stability of mobile terminal can be improved.
The embodiment of the present invention provides a kind of mobile terminal, including mainboard, control unit and partial pressure unit, when movement end
When the battery charging complete at end, which controls the partial pressure unit and is electrically connected with the mainboard, so that the partial pressure unit point
Carry on a shoulder pole part system voltage.
Mobile terminal provided in an embodiment of the present invention, in the battery charging complete of mobile terminal, control unit control point
Pressure unit is electrically connected with mainboard realization, to be loaded into the voltage on mainboard by partial pressure unit sharing system, so that on mainboard
Voltage is lower than the safe voltage that can bear, and thus mainboard is avoided to be burnt out by high voltage, so as to improve the stability of mainboard,
And then the stability of mobile terminal can be improved.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those skilled in the art, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the application scenarios schematic diagram of mobile terminal charging provided in an embodiment of the present invention.
Fig. 2 is the first structural schematic diagram of mobile terminal provided in an embodiment of the present invention.
Fig. 3 is second of structural schematic diagram of mobile terminal provided in an embodiment of the present invention.
Fig. 4 is the third structural schematic diagram of mobile terminal provided in an embodiment of the present invention.
Fig. 5 is the 4th kind of structural schematic diagram of mobile terminal provided in an embodiment of the present invention.
Fig. 6 is the 5th kind of structural schematic diagram of mobile terminal provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those skilled in the art's every other implementation obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.
" first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.?
In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected or can mutually communicate；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
With reference to Fig. 1, when mobile terminal 100 charges, mobile terminal 100 is connect with adapter 200 by data line.Adapter
200 can connect external power supply.At this point, the charging chip in mobile terminal 100 is responsible for being managed charging process.Charge core
Piece receives the voltage signal of adapter input, and exports two-way voltage signal.The two-way voltage signal of charging chip output, wherein
It is input to battery all the way, charges the battery；In addition it is input to mainboard all the way, powers to mobile terminal system.It is mobile with reference to Fig. 2
Terminal 100 includes charging chip 10, mainboard 20, control unit 30, partial pressure unit 40 and battery 50.
Charging chip 10, mainboard 20, control unit 30 and partial pressure unit 40 are sequentially connected, while charging chip 10 and electricity
Pond 50 connects.
In the charging process of mobile terminal 100, charging chip 10 receives the voltage signal of external adapter input, and defeated
Two-way voltage signal out.Wherein voltage signal is input to mainboard 20 all the way, and in addition voltage signal is input to battery 50 all the way.Charging
The voltage swing for the two-way voltage signal that chip 10 exports is identical.
Charging chip 10 can be with the charged state of real-time detection mobile terminal 100.The charged state include charging in and
Charging complete.
It can integrate many components on mainboard 20.For example, processor (CPU, Central in mobile terminal 100
Processing Unit), power management chip (PMIC, Power Management Integrated Circuit), input
Output interface etc. can be integrated on mainboard 20.After mainboard 20 receives the voltage signal of the output of charging chip 10, pass through
PMIC is that all parts of mobile terminal 100 are powered.
Control unit 30 is electrically connected or disconnects electrical connection with the realization of partial pressure unit 40 for control mainboard 20.
In the charging process of mobile terminal 100, charging chip 10 export voltage with the raising of 50 voltage of battery and
It increases.
When charging chip 10 detects that mobile terminal 100 is in charged state, charging chip 10 is output to battery at this time
The full piezoelectric voltage of battery 50 has not yet been reached in 50 voltage, and the voltage that charging chip 10 exports is lower.
Due to charging chip 10 export two-way voltage be it is identical, the voltage for being output to mainboard 20 at this time is relatively low.It is main
The risk being burned is not present in plate 20, therefore does not need partial pressure unit 40 and share voltage, at this time 30 control mainboard 20 of control unit
It is electrically connected with the disconnection of partial pressure unit 40.
When charging chip 10 detects 100 charging complete of mobile terminal, indicate that the voltage of battery 50 reaches full piezoelectric voltage.
The voltage that charging chip 10 exports is equal with cell voltage.For example, the voltage of battery 50 reaches 4.35V.Charging chip is defeated at this time
Voltage out is also 4.35V.
Currently, adapter is filled by charging chip to system power supply and to battery in the charging process of mobile terminal
Electricity.System power supply voltage Vsys is equal, i.e. Vsys=Vbat with cell voltage Vbat when charging.When battery is full of, fit
It is system power supply that orchestration, which continues through charging chip,.In order to prevent battery discharge, and then avoid battery to system power supply, adapter
It will disconnect the charge path to charge the battery, and apply the voltage of 150mv or so to system by adapter supply path,
To avoid battery to system power supply.At this point, Vsys=Vbat+150mv, Vsys are higher than cell voltage Vbat.At this point, due to battery
Voltage Vbat is lower than system voltage Vsys, therefore battery will not give system power supply.It can however, system voltage Vsys voltage is relatively high
It can burn out the components such as the relatively low PMIC of pressure voltage, mainboard.
Since the voltage in system loads to mainboard 20 is more slightly higher than the voltage that charging chip 10 exports, system loads are arrived at this time
Voltage on mainboard 20 is easy the safe voltage beyond mainboard 20.
For example, the voltage on mainboard reaches 4.5V when system voltage 150mv higher than the voltage that charging chip 10 exports.And
The safe voltage of mainboard 20 is also for example 4.5V, and mainboard 20 faces the risk being burned at this time.
At this point, 30 control mainboard 20 of control unit is electrically connected with partial pressure unit 40, partial pressure unit 40 can share part system
Voltage of uniting is burned so that the voltage on mainboard 20 is lower than safe voltage to avoid mainboard 20.
Partial pressure unit 40 can share mobile terminal system and be loaded on mainboard 20 after being electrically connected with the realization of mainboard 20
Voltage.
Battery 50 can also be connect with mainboard 20.After mobile terminal 100 and external adapter disconnect, battery 50 can
To be mobile terminal system power supply by mainboard 20.
In some embodiments, as shown in figure 3, control unit 30 can be switch, with control mainboard 20 and partial pressure unit
Connecting or disconnecting between 40.
Switch 30 can be a plurality of types of switches.For example, switch 30 can be transistor, it is when the transistor conducts, main
Plate 20 is electrically connected with the realization of partial pressure unit 40；When the transistor is turned off, mainboard 20 is electrically connected with the disconnection of partial pressure unit 40.Some
In embodiment, switch 30 or micromechanical switch.
In some embodiments, partial pressure unit 40 is resistance.When switch 30 is connected, resistance 40 and 20 company of series connection of mainboard
It connects.At this point, resistance 40 can be loaded into the voltage on mainboard 20 with sharing system.In some embodiments, the resistance value of resistance 40
It can be 1000 ohm.
In some embodiments, as shown in figure 4, partial pressure unit 40 may include resistance 41 and resistance 42.Resistance 41 and electricity
Resistance 42 is connected in series.The resistance value of resistance 41 and resistance 42 may be the same or different.For example, resistance 41 and resistance 42
Resistance value is 500 ohm.
It is only illustrated herein with partial pressure unit 40 including two resistance.It is understood that partial pressure unit 40 includes
Resistance quantity can also be for greater than two.For example, partial pressure unit 40 includes 3 mutual concatenated resistance, 4 mutual concatenated electricity
Resistance etc..
With reference to Fig. 5, Fig. 5 is the structural schematic diagram of another mobile terminal provided in an embodiment of the present invention.
As shown in figure 5, mobile terminal 100 includes charging chip 10, mainboard 20, control unit 30, partial pressure unit 40, battery
50 and resistance unit 60.
Charging chip 10, control unit 30, mainboard 20 and resistance unit 60 are sequentially connected, to form first line.It fills
Electrical chip 10, control unit 30, partial pressure unit 40 and mainboard 20 are sequentially connected, to form the second route.Meanwhile partial pressure unit
40 connect with resistance unit 60.Meanwhile charging chip 10 is connect with battery 50.
In the charging process of mobile terminal 100, charging chip 10 receives the voltage signal of external adapter input, and defeated
Two-way voltage signal out.Wherein voltage signal is input to mainboard 20 all the way, and in addition voltage signal is input to battery 50 all the way.Charging
The voltage swing for the two-way voltage signal that chip 10 exports is identical.
Charging chip 10 can be with the charged state of real-time detection mobile terminal 100.The charged state include charging in and
Charging complete.
It can integrate many components on mainboard 20.For example, processor (CPU, Central in mobile terminal 100
Processing Unit), power management chip (PMIC, Power Management Integrated Circuit), input
Output interface etc. can be integrated on mainboard 20.After mainboard 20 receives the voltage signal of the output of charging chip 10, pass through
PMIC is that all parts of mobile terminal 100 are powered.
Control unit 30 is connected for controlling above-mentioned first line connection or the second route.In some embodiments, it controls
Unit 30 processed includes switch 31 and switch 32.Wherein, switch 32 is connect with charging chip 10 and mainboard 20, switch 31 with fill
Electrical chip 10 and partial pressure unit 40 connect.
In the charging process of mobile terminal 100, charging chip 10 export voltage with the raising of 50 voltage of battery and
It increases.
When charging chip 10 detects that mobile terminal 100 is in charged state, charging chip 10 is output to battery at this time
The full piezoelectric voltage of battery 50 has not yet been reached in 50 voltage, and the voltage that charging chip 10 exports is lower.
Due to charging chip 10 export two-way voltage be it is identical, the voltage for being output to mainboard 20 at this time is relatively low.It is main
The risk being burned is not present in plate 20, therefore does not need partial pressure unit 40 and share voltage.At this point, switch 32 is connected, on connecting
State first line；Switch 31 disconnects, to disconnect above-mentioned second route.
When charging chip 10 detects 100 charging complete of mobile terminal, indicate that the voltage of battery 50 reaches full piezoelectric voltage.
The voltage that charging chip 10 exports is equal with cell voltage.For example, the voltage of battery 50 reaches 4.35V.Charging chip is defeated at this time
Voltage out is also 4.35V.
Since the voltage in system loads to mainboard 20 is more slightly higher than the voltage that charging chip 10 exports, system loads are arrived at this time
Voltage on mainboard 20 is easy to reach the safe voltage of mainboard 20.
For example, the voltage on mainboard reaches 4.5V when system voltage 150mv higher than the voltage that charging chip 10 exports.And
The safe voltage of mainboard 20 is also for example 4.5V, and mainboard 20 faces the risk being burned at this time.
At this point, switch 31 is connected, to connect above-mentioned second route；Switch 32 disconnects, to disconnect above-mentioned first line.By
This, partial pressure unit 40 can share part system voltage, so that the voltage on mainboard 20 is lower than safe voltage, to avoid mainboard 20
It is burned.
After the conducting of switch 31, realization is electrically connected partial pressure unit 40 with mainboard 20.At this point, partial pressure unit 40 can be shared
Mobile terminal system is loaded into the voltage on mainboard 20.Partial pressure unit 40 can be resistance.
Battery 50 can also be connect with mainboard 20.After mobile terminal 100 and external adapter disconnect, battery 50 can
To be mobile terminal system power supply by mainboard 20.
When above-mentioned first line is connected, resistance unit 60 and mainboard 20 are connected in series.When above-mentioned second route is connected,
Resistance unit 60 is connected in parallel with mainboard 20.The resistance value of resistance unit 60 is less than the resistance value of resistance 40.For example, resistance unit
60 resistance value can be 23 ohm.Resistance unit 60 is matched with resistance 40, so that the voltage on mainboard 20 is lower than institute's energy
The safe voltage of receiving.
For example, the voltage of battery 50 is 4.35V when 100 charging complete of mobile terminal.At this point, charging chip 10 exports
Two-way voltage be 4.35V.The system voltage being loaded on mainboard 20 is 150mv higher than the voltage that charging chip 10 exports,
Voltage i.e. on mainboard 20 is 4.5V.If the safe voltage that mainboard 20 can bear is 4.4V, partial pressure unit 40 is needed to divide at this time
Carry on a shoulder pole the portion voltage on mainboard 20.When 1000 ohm of 40 value of resistance, 23 ohm of 60 value of resistance unit, mainboard can be made
Virtual voltage on 20 is lower than safe voltage 4.4V.
Switch 31 and switch 32 can be a plurality of types of switches.In some embodiments, switch 31, switch 32 can be
Transistor.In some embodiments, switch 31, switch 32 or micromechanical switch.
In some embodiments, partial pressure unit 40 is resistance.When switch 31 is connected, above-mentioned second route is connected, resistance
40 are connected in series with mainboard 20.At this point, resistance 40 can be loaded into the voltage on mainboard 20 with sharing system.In some embodiments
In, the resistance value of resistance 40 can be 1000 ohm.
In some embodiments, as shown in fig. 6, partial pressure unit 40 may include multiple first resistors.For example, partial pressure unit
40 include first resistor 41 and first resistor 42.First resistor 41 and first resistor 42 are connected in series.First resistor 41 and first
The resistance value of resistance 42 may be the same or different.For example, the resistance value of first resistor 41 and first resistor 42 is 500
Ohm.
It is only illustrated herein with partial pressure unit 40 including two first resistors.It is understood that partial pressure unit 40 is wrapped
The first resistor quantity included can also be for greater than two.
In some embodiments, as shown in fig. 6, resistance unit 60 may include multiple second resistances.For example, resistance unit
60 include second resistance 61 and second resistance 62.Second resistance 61 and second resistance 62 are connected in series.Second resistance 61 and second
The resistance value of resistance 62 may be the same or different.For example, the resistance value of second resistance 61 and second resistance 62 is 11.5
Ohm.
It is only illustrated herein with resistance unit 60 including two second resistances.It is understood that resistance unit 60 wraps
The second resistance quantity included can also be for one or greater than two.
From the foregoing, it will be observed that mobile terminal provided in an embodiment of the present invention, including mainboard, control unit and partial pressure unit, when
When the battery charging complete of the mobile terminal, which controls the partial pressure unit and is electrically connected with the mainboard, so that this point
Pressure unit shares part system voltage.For the program in the battery charging complete of mobile terminal, control unit controls partial pressure unit
It is electrically connected with mainboard realization, to be loaded into the voltage on mainboard by partial pressure unit sharing system, so that the voltage on mainboard is low
In the safe voltage that can bear, thus mainboard is avoided to be burnt out by high voltage, so as to improve the stability of mainboard, Jin Erke
To improve the stability of mobile terminal.
It is provided for the embodiments of the invention mobile terminal above to be described in detail, specific case used herein
Principle and implementation of the present invention are described, the present invention that the above embodiments are only used to help understand.Together
When, for those skilled in the art, according to the thought of the present invention, change is had in specific embodiments and applications
Place, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of mobile terminal, including mainboard, control unit, partial pressure unit and charging chip, when the electricity of the mobile terminal
When the charging complete of pond, described control unit controls the partial pressure unit and is electrically connected with the mainboard, so that the partial pressure unit
Share part system voltage；
The charging chip exports two-way voltage signal, and the voltage signal arrives battery all the way, arrives mainboard, two-way voltage letter all the way
Number voltage swing it is identical.
2. mobile terminal according to claim 1, which is characterized in that described control unit includes first switch, when described
When the battery charging complete of mobile terminal, the first switch conducting.
3. mobile terminal according to claim 2, which is characterized in that the charging chip, first switch, partial pressure unit with
And the mainboard is sequentially connected, described control unit further includes second switch, the second switch respectively with the charging chip
And the mainboard connection, when the battery charging complete of the mobile terminal, the second switch is disconnected.
4. mobile terminal according to any one of claim 1 to 3, which is characterized in that the partial pressure unit includes first
Resistance.
5. mobile terminal according to claim 4, which is characterized in that the quantity of the first resistor is multiple greater than one
The first resistor is sequentially connected.
6. mobile terminal according to claim 5, which is characterized in that the resistance value of multiple first resistors is all the same.
7. mobile terminal according to claim 2 or 3, which is characterized in that the first switch is transistor.
8. mobile terminal according to claim 3, which is characterized in that it further include resistance unit, the resistance unit difference
It is connect with the mainboard and the partial pressure unit.
9. mobile terminal according to claim 8, which is characterized in that the resistance value of the resistance unit is less than the partial pressure
The resistance value of unit.
10. mobile terminal according to claim 8 or claim 9, which is characterized in that the resistance unit includes multiple second electricity
Resistance, multiple second resistances are sequentially connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710026434.2A CN106532875B (en) | 2017-01-13 | 2017-01-13 | Mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026434.2A CN106532875B (en) | 2017-01-13 | 2017-01-13 | Mobile terminal |
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| CN106532875A CN106532875A (en) | 2017-03-22 |
| CN106532875B true CN106532875B (en) | 2019-08-06 |
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| CN201710026434.2A Active CN106532875B (en) | 2017-01-13 | 2017-01-13 | Mobile terminal |
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| CN110366687B (en) * | 2018-02-01 | 2021-06-01 | Oppo广东移动通信有限公司 | Terminal equipment and electric leakage detection method and detection device thereof |
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| CN203233186U (en) * | 2013-01-07 | 2013-10-09 | 华为终端有限公司 | Charging circuit and communication terminal |
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| CN101299164B (en) * | 2008-06-23 | 2011-06-15 | 李幸 | Novel intelligent high-efficiency portable computer electric power supply system |
| CN103795051B (en) * | 2012-11-01 | 2017-12-15 | 海洋王（东莞）照明科技有限公司 | A kind of overvoltage crowbar and light fixture |
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| CN101593963A (en) * | 2008-05-30 | 2009-12-02 | 鸿富锦精密工业（深圳）有限公司 | Overvoltage crowbar |
| CN102169674A (en) * | 2011-01-21 | 2011-08-31 | 青岛海信电器股份有限公司 | Dynamic load adjusting module, liquid crystal display device and voltage adjusting method |
| CN202014342U (en) * | 2011-05-06 | 2011-10-19 | 青岛海信宽带多媒体技术有限公司 | STB network debug circuit |
| CN103296664A (en) * | 2012-03-02 | 2013-09-11 | 鸿富锦精密工业（深圳）有限公司 | Overvoltage protection circuit and electronic device with overvoltage protection circuit |
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| CB02 | Change of applicant information |
Address after: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant before: Guangdong OPPO Mobile Communications Co., Ltd. |
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