CN105702230A - Method and device for adjusting backlight brightness of display screen of terminal and terminal - Google Patents
Method and device for adjusting backlight brightness of display screen of terminal and terminal Download PDFInfo
- Publication number
- CN105702230A CN105702230A CN201610234947.8A CN201610234947A CN105702230A CN 105702230 A CN105702230 A CN 105702230A CN 201610234947 A CN201610234947 A CN 201610234947A CN 105702230 A CN105702230 A CN 105702230A
- Authority
- CN
- China
- Prior art keywords
- brightness
- value
- collection period
- ambient light
- light sensor
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the invention discloses a method and device for adjusting the backlight brightness of a display screen of a terminal and the terminal. The method includes increasing the brightness acquisition period of an ambient light sensor when the environment brightness value is lower than a preset brightness value, and adjusting the backlight brightness of the display screen according to the acquisition result of the ambient light sensor in a same brightness acquisition period. When the light is dark, the backlight brightness regulation and control precision can be improved.
Description
Technical field
The present embodiments relate to display backlight adjustment technology, particularly relate to the display backlight luminance regulating method of a kind of terminal, device and terminal。
Background technology
Along with the development of science and technology, the terminal of such as mobile phone and computer etc has stronger display effect and abundant function because of it, has become as one of indispensable routine use instrument of people。
At present, terminal display screen backlight illumination is adjusted according to ambient light intensity, it is possible to adjust different backlight illumination grades according to different ambient light intensities。
In daily life, we are in the environment that light is more weak sometimes, such as, may proceed to play mobile phone after turning off the light evening, and the slightly brighter eyes of mobile phone backlight all can have the stronger impression of ratio in such cases, and the improper impact on vision of backlight illumination is bigger。Therefore, when dark, backlight illumination needs higher Adjustment precision。
Summary of the invention
The invention provides the display backlight luminance regulating method of a kind of terminal, device and terminal, during to improve dark, the control accuracy of backlight illumination。
First aspect, embodiments provides the display backlight luminance regulating method of a kind of terminal, and described method includes:
When ambient brightness value is lower than predetermined luminance value, increase the brightness collection period of ambient light sensor；
Display backlight brightness is adjusted according to described ambient light sensor collection result in same brightness collection period。
Second aspect, the embodiment of the present invention additionally provides the display backlight brightness adjusting device of a kind of terminal, and described device includes:
Period modulation module, for when ambient brightness value is lower than predetermined luminance value, increasing the brightness collection period of ambient light sensor；
Brightness adjusting section, for adjusting display backlight brightness according to described ambient light sensor collection result in same brightness collection period。
The third aspect, the embodiment of the present invention additionally provides a kind of terminal, and described terminal includes the display backlight brightness adjusting device of the terminal described in any embodiment of the present invention。
The embodiment of the present invention is by when ambient brightness value is lower than predetermined luminance value, increase the brightness collection period of ambient light sensor, and adjust display backlight brightness according to described ambient light sensor collection result in same brightness collection period, improve the certainty of measurement of ambient brightness during dark, thus improve the control accuracy of backlight illumination。
Accompanying drawing explanation
Fig. 1 is the flow chart of the display backlight luminance regulating method of a kind of terminal in the embodiment of the present invention one；
Fig. 2 is the flow chart of the display backlight luminance regulating method of a kind of terminal in the embodiment of the present invention two；
Fig. 3 is the structural representation of the display backlight brightness adjusting device of a kind of terminal in the embodiment of the present invention three；
Fig. 4 is the structural representation of a kind of terminal in the embodiment of the present invention four。
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail。It is understood that specific embodiment described herein is used only for explaining the present invention, but not limitation of the invention。It also should be noted that, for the ease of describing, accompanying drawing illustrate only part related to the present invention but not entire infrastructure。
Embodiment one
Fig. 1 is the flow chart of the display backlight luminance regulating method of a kind of terminal in the embodiment of the present invention one, when the present embodiment is applicable to dark, need to adjust the situation of backlight illumination, the method can be performed by the display backlight brightness adjusting device of terminal, this device can be realized by the mode of hardware and/or software, this device is typically configured in the terminal such as such as mobile phone, panel computer etc. that user uses, as it is shown in figure 1, described method specifically may include steps of:
Step 110, when ambient brightness value is lower than predetermined luminance value, increase ambient light sensor brightness collection period。
Concrete, described predetermined luminance value can be set as required, is chosen as 20lux。When ambient brightness value is lower than 20lux, terminal is in low luminous environment, and the backlight illumination adjustment of terminal display screen needs more fine and accurate。By increasing the brightness collection period of ambient light sensor, namely increase the integration period of ambient light sensor, it is possible to improve the certainty of measurement of ambient brightness, thus improving backlight illumination Adjustment precision。Exemplary, when terminal is in the strong environment of normal light, the brightness collection period of ambient light sensor is 100ms；When terminal is in low luminous environment, it is possible to increase to more than 100ms by the brightness collection period of ambient light sensor, such as 120ms, 150ms or 200ms etc., such ambient light sensor just can catch environment light more, and output result will be finer。
It addition, described ambient light sensor brightness collection period increase amount and be not specifically limited, it is possible to determine according to current environment brightness value。Owing to increasing described brightness collection period, backlight output speed can be reduced, therefore when display screen is in the process by dark screen to bright screen, the amount that brightness collection period increases can choose less value, so can improve backlight Adjustment precision and can guarantee that again there is higher backlight output speed, improve Consumer's Experience。If display screen is in bright screen state, the amount that brightness collection period increases can choose bigger value, such as, during bright screen state, when ambient brightness value being detected lower than predetermined luminance value, can being transferred to maximum by described brightness collection period, such ambient light sensor just can catch environment light in maximum case ground, and output result is finer。
Step 120, adjust display backlight brightness according to described ambient light sensor collection result in same brightness collection period。
Wherein, the collection result of described ambient light sensor is exported by the depositor of sensor, and described collection result can obtain current environment brightness value through a series of ratiometric conversion, it is possible to according to described ambient brightness value, display screen adjusts corresponding backlight illumination。
The present embodiment is by when ambient brightness value is lower than predetermined luminance value, increase the brightness collection period of ambient light sensor, and adjust display backlight brightness according to described ambient light sensor collection result in same brightness collection period, improve the certainty of measurement of ambient brightness during dark, thus improve the control accuracy of backlight illumination。
Embodiment two
The present embodiment provides the display backlight luminance regulating method of a kind of terminal based on above-described embodiment。Fig. 2 is the flow chart of the display backlight luminance regulating method of a kind of terminal in the embodiment of the present invention two, as in figure 2 it is shown, described method specifically may include steps of:
Step 210, when ambient brightness value is lower than predetermined luminance value, determine, according to default brightness section, the brightness collection period that described ambient brightness value is corresponding with the corresponding relation of brightness collection period, and the brightness collection period of described ambient light sensor is adjusted the brightness collection period that described ambient brightness value is corresponding；Wherein, brightness value corresponding to brightness section in described corresponding relation is more little, and corresponding brightness collection period is more big。
Concrete, it is possible to ambient brightness is divided into n brightness section, the corresponding brightness collection period of each described brightness section, brightness value corresponding to described brightness section is more little, and the brightness collection period of correspondence is more big, and wherein, n is positive integer。
Optionally, brightness collection period corresponding to the minimum brightness section of corresponding brightness value can be the high-high brightness collection period of described ambient light sensor。Concrete, if brightness value corresponding to the n-th brightness section is minimum in n brightness section, the brightness collection period of its correspondence is maximum, for the high-high brightness collection period of environmental luminance sensor, so, the brightness collection period of ambient brightness value its correspondence more little is more big, ambient brightness certainty of measurement is more high, corresponding backlight illumination Adjustment precision is more high so that when dark, backlight illumination more meets human eye requirement, improves Consumer's Experience。
Step 220, adjust display backlight brightness according to described ambient light sensor collection result in same brightness collection period。
Concrete, it is possible to according to the collection result of described ambient light sensor and brightness transition coefficient calculations current environment brightness value；And adjust display backlight brightness according to described current environment brightness value。
Wherein, according to described brightness transition coefficient, the collection result of described ambient light sensor being done a series of ratiometric conversion and can obtain current environment brightness value, described brightness transition coefficient can include glass ink coefficient and ambient light correction parameter。Concrete, that different ambient light intensities can be corresponding different display backlight brightness degree, it is possible to according to described current environment brightness value, by the described display backlight brightness adjustment brightness degree to correspondence。The present embodiment is by adjusting the brightness collection period of ambient light sensor, when improve dark, and the certainty of measurement of ambient brightness, thus improve the Adjustment precision of display backlight brightness, improve Consumer's Experience。
Optionally, if described collection result is less than setting threshold value, using described collection result as described current environment brightness value。
Wherein, described setting threshold value can set as required, is chosen as 5。If described collection result is less than setting threshold value, the brightness value obtained after being changed by brightness transition coefficient has bigger distortion, directly makes backlight illumination Adjustment precision higher as described ambient brightness value described collection result。
The present embodiment is by when ambient brightness value is lower than predetermined luminance value, the brightness collection period that described ambient brightness value is corresponding is determined with the corresponding relation of brightness collection period according to default brightness section, and the brightness collection period of described ambient light sensor is adjusted the brightness collection period that described ambient brightness value is corresponding, and adjust display backlight brightness according to described ambient light sensor collection result in same brightness collection period, improve the certainty of measurement of ambient brightness during dark, thus improve the control accuracy of backlight illumination。
Embodiment three
Present embodiments provide the display backlight brightness adjusting device of a kind of terminal, Fig. 3 is the structural representation of the display backlight brightness adjusting device of a kind of terminal in the embodiment of the present invention three, as shown in Figure 3, described device specifically may include that period modulation module 310 and brightness adjusting section 320, wherein
Period modulation module 310, for when ambient brightness value is lower than predetermined luminance value, increasing the brightness collection period of ambient light sensor；
Brightness adjusting section 320, for adjusting display backlight brightness according to described ambient light sensor collection result in same brightness collection period。
Further, period modulation module 310 specifically for:
When ambient brightness value is lower than predetermined luminance value, determine, according to default brightness section, the brightness collection period that described ambient brightness value is corresponding with the corresponding relation of brightness collection period, and the brightness collection period of described ambient light sensor is adjusted the brightness collection period that described ambient brightness value is corresponding；
Wherein, brightness value corresponding to brightness section in described corresponding relation is more little, and corresponding brightness collection period is more big。
Further, the high-high brightness collection period that brightness collection period is described ambient light sensor that the minimum brightness section of corresponding brightness value is corresponding。
Further, brightness adjusting section 320 includes:
Ambient brightness computing unit, for the collection result according to described ambient light sensor and brightness transition coefficient calculations current environment brightness value；
Backlight adjusting unit, for adjusting display backlight brightness according to described current environment brightness value。
Further, described brightness transition coefficient includes glass ink coefficient and ambient light correction parameter。
Further, described ambient brightness computing unit specifically for:
If described collection result is less than setting threshold value, using described collection result as described current environment brightness value。
The display backlight brightness adjusting device of the terminal that the present embodiment provides, the display backlight luminance regulating method of the terminal provided with any embodiment of the present invention belongs to same inventive concept, the display backlight luminance regulating method of the terminal that any embodiment of the present invention provides can be performed, possess the display backlight corresponding functional module of brightness adjustment method and beneficial effect that perform terminal。The not ins and outs of detailed description in the present embodiment, the display backlight luminance regulating method of the terminal that can provide referring to any embodiment of the present invention。
Embodiment four
Present embodiments providing a kind of terminal, Fig. 4 is the structural representation of a kind of terminal in the embodiment of the present invention four, and as shown in Figure 4, terminal 410 includes the display backlight brightness adjusting device 411 of the terminal described in any embodiment of the present invention。
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle。It will be appreciated by those skilled in the art that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute without departing from protection scope of the present invention。Therefore, although the present invention being described in further detail by above example, but the present invention is not limited only to above example, when without departing from present inventive concept, other Equivalent embodiments more can also be included, and the scope of the present invention is determined by appended right。
Claims (13)
1. the display backlight luminance regulating method of a terminal, it is characterised in that including:
When ambient brightness value is lower than predetermined luminance value, increase the brightness collection period of ambient light sensor；
Display backlight brightness is adjusted according to described ambient light sensor collection result in same brightness collection period。
2. method according to claim 1, it is characterised in that when ambient brightness value is lower than predetermined luminance value, adjusts the brightness collection period of ambient light sensor, including:
When ambient brightness value is lower than predetermined luminance value, determine, according to default brightness section, the brightness collection period that described ambient brightness value is corresponding with the corresponding relation of brightness collection period, and the brightness collection period of described ambient light sensor is adjusted the brightness collection period that described ambient brightness value is corresponding；
Wherein, brightness value corresponding to brightness section in described corresponding relation is more little, and corresponding brightness collection period is more big。
3. method according to claim 2, it is characterised in that the high-high brightness collection period that brightness collection period is described ambient light sensor that the minimum brightness section of corresponding brightness value is corresponding。
4. method according to claim 1, it is characterised in that adjust display backlight brightness according to described ambient light sensor collection result in same brightness collection period and include:
Collection result according to described ambient light sensor and brightness transition coefficient calculations current environment brightness value；
Display backlight brightness is adjusted according to described current environment brightness value。
5. method according to claim 4, it is characterised in that described brightness transition coefficient includes glass ink coefficient and ambient light correction parameter。
6. method according to claim 4, it is characterised in that include according to the collection result of described ambient light sensor and brightness transition coefficient calculations current environment brightness value:
If described collection result is less than setting threshold value, using described collection result as described current environment brightness value。
7. the display backlight brightness adjusting device of a terminal, it is characterised in that including:
Period modulation module, for when ambient brightness value is lower than predetermined luminance value, increasing the brightness collection period of ambient light sensor；
Brightness adjusting section, for adjusting display backlight brightness according to described ambient light sensor collection result in same brightness collection period。
8. device according to claim 7, it is characterised in that described period modulation module specifically for:
When ambient brightness value is lower than predetermined luminance value, determine, according to default brightness section, the brightness collection period that described ambient brightness value is corresponding with the corresponding relation of brightness collection period, and the brightness collection period of described ambient light sensor is adjusted the brightness collection period that described ambient brightness value is corresponding；
Wherein, brightness value corresponding to brightness section in described corresponding relation is more little, and corresponding brightness collection period is more big。
9. device according to claim 8, it is characterised in that the high-high brightness collection period that brightness collection period is described ambient light sensor that the minimum brightness section of corresponding brightness value is corresponding。
10. device according to claim 7, it is characterised in that described brightness adjusting section includes:
Ambient brightness computing unit, for the collection result according to described ambient light sensor and brightness transition coefficient calculations current environment brightness value；
Backlight adjusting unit, for adjusting display backlight brightness according to described current environment brightness value。
11. device according to claim 10, it is characterised in that described brightness transition coefficient includes glass ink coefficient and ambient light correction parameter。
12. device according to claim 10, it is characterised in that described ambient brightness computing unit specifically for:
If described collection result is less than setting threshold value, using described collection result as described current environment brightness value。
13. a terminal, it is characterised in that include the display backlight brightness adjusting device of terminal described in any one of claim 7-12。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610234947.8A CN105702230B (en) | 2016-04-14 | 2016-04-14 | Display backlight luminance regulating method, device and the terminal of a kind of terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610234947.8A CN105702230B (en) | 2016-04-14 | 2016-04-14 | Display backlight luminance regulating method, device and the terminal of a kind of terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105702230A true CN105702230A (en) | 2016-06-22 |
| CN105702230B CN105702230B (en) | 2018-06-05 |
Family
ID=56216829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610234947.8A Active CN105702230B (en) | 2016-04-14 | 2016-04-14 | Display backlight luminance regulating method, device and the terminal of a kind of terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105702230B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097984A (en) * | 2016-08-15 | 2016-11-09 | 广东欧珀移动通信有限公司 | The method of proximity transducer, device and mobile terminal is opened in backlight adjusts |
| CN106851802A (en) * | 2017-02-03 | 2017-06-13 | 广东欧珀移动通信有限公司 | Adjust the method and mobile terminal of the poll rate of dynamic thresholding algorithm |
| CN107809525A (en) * | 2017-09-22 | 2018-03-16 | 捷开通讯(深圳)有限公司 | Mobile terminal and its control method, storage device |
| CN107808626A (en) * | 2017-10-24 | 2018-03-16 | 北京小米移动软件有限公司 | Adjust the method, apparatus and computer-readable recording medium of display screen colour temperature |
| CN109119044A (en) * | 2018-10-16 | 2019-01-01 | Oppo（重庆）智能科技有限公司 | Electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030189211A1 (en) * | 2002-04-03 | 2003-10-09 | Mitsubishi Electric Research Laboratories, Inc. | Automatic backlight for handheld devices |
| CN1856815A (en) * | 2003-09-24 | 2006-11-01 | 皇家飞利浦电子股份有限公司 | Method and system for controlling illuminating apparatus |
| CN1894567A (en) * | 2003-12-15 | 2007-01-10 | 伊斯曼柯达公司 | Ambient light detection circuit |
| US20090140971A1 (en) * | 2007-12-03 | 2009-06-04 | Hernandez Thomas J | Intelligent automatic backlight control scheme |
| CN101458406A (en) * | 2007-12-14 | 2009-06-17 | 希姆通信息技术（上海）有限公司 | Light sense energy-conserving system in mobile phone and light sense energy-conserving implementing method |
| CN102568438A (en) * | 2010-12-13 | 2012-07-11 | 周锡卫 | Self-adaptation brightness intelligent regulator for display device and realization method |
-
2016
- 2016-04-14 CN CN201610234947.8A patent/CN105702230B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030189211A1 (en) * | 2002-04-03 | 2003-10-09 | Mitsubishi Electric Research Laboratories, Inc. | Automatic backlight for handheld devices |
| CN1856815A (en) * | 2003-09-24 | 2006-11-01 | 皇家飞利浦电子股份有限公司 | Method and system for controlling illuminating apparatus |
| CN1894567A (en) * | 2003-12-15 | 2007-01-10 | 伊斯曼柯达公司 | Ambient light detection circuit |
| US20090140971A1 (en) * | 2007-12-03 | 2009-06-04 | Hernandez Thomas J | Intelligent automatic backlight control scheme |
| CN101527119A (en) * | 2007-12-03 | 2009-09-09 | 英特尔公司 | Intelligent automatic backlight control scheme |
| CN101458406A (en) * | 2007-12-14 | 2009-06-17 | 希姆通信息技术（上海）有限公司 | Light sense energy-conserving system in mobile phone and light sense energy-conserving implementing method |
| CN102568438A (en) * | 2010-12-13 | 2012-07-11 | 周锡卫 | Self-adaptation brightness intelligent regulator for display device and realization method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097984A (en) * | 2016-08-15 | 2016-11-09 | 广东欧珀移动通信有限公司 | The method of proximity transducer, device and mobile terminal is opened in backlight adjusts |
| CN106851802A (en) * | 2017-02-03 | 2017-06-13 | 广东欧珀移动通信有限公司 | Adjust the method and mobile terminal of the poll rate of dynamic thresholding algorithm |
| CN106851802B (en) * | 2017-02-03 | 2019-09-17 | Oppo广东移动通信有限公司 | Adjust the method and mobile terminal of the poll rate of dynamic thresholding algorithm |
| CN107809525A (en) * | 2017-09-22 | 2018-03-16 | 捷开通讯(深圳)有限公司 | Mobile terminal and its control method, storage device |
| CN107808626A (en) * | 2017-10-24 | 2018-03-16 | 北京小米移动软件有限公司 | Adjust the method, apparatus and computer-readable recording medium of display screen colour temperature |
| CN109119044A (en) * | 2018-10-16 | 2019-01-01 | Oppo（重庆）智能科技有限公司 | Electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105702230B (en) | 2018-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105702230A (en) | Method and device for adjusting backlight brightness of display screen of terminal and terminal | |
| CN103940505B (en) | Ambient light sensor and control method, electronic product | |
| CN103327148B (en) | Based on implementation method and the mobile terminal of the brightness of mobile terminal adjustment screen backlight | |
| TWI325279B (en) | Method and system for automatic brightness and contrast adjustment of a video source | |
| CN108538265B (en) | Display brightness adjusting method and device of liquid crystal display screen | |
| WO2018133182A1 (en) | Luminance adjusting method for led display screen system | |
| TWI478144B (en) | Display method for sunlight readable and electronic device using the same | |
| CN104575448B (en) | The backlight adjusting method and device of a kind of display device | |
| US20160335957A1 (en) | Backlight brightness adjustment method and apparatus | |
| CN104200783B (en) | Method and system for enabling mobile phone to acquire uniform light effect through production line calibration | |
| CN104660766B (en) | The backlight adjusting method and device of a kind of mobile terminal | |
| CN105244008B (en) | A kind of display device and its brightness adjusting method | |
| US20140292792A1 (en) | Method for Applying Gamma Compensation To A Display And Gamma Compensation Device | |
| CN110211548A (en) | Adjust the method and electronic equipment of display brightness | |
| CN102938247A (en) | Brightness adjusting method and device | |
| CN103370736A (en) | Display controller and display system | |
| CN104469022A (en) | Backlight lamp regulation method and system and handheld terminal | |
| CN102270427B (en) | Method and apparatus for enhancing reading effect of electronic book and electronic terminal | |
| CN105895057B (en) | A kind of backlight adjusting method, device and terminal device | |
| TW200639769A (en) | Display device | |
| US10650786B2 (en) | Automatically brightness adjusting electronic device and brightness adjusting method thereof | |
| TW201832068A (en) | Display system, electronic apparatus and display adjustment method thereof | |
| CN109754761A (en) | A kind of method and device changing adjustment electrowetting display brightness with environment light | |
| WO2016078440A1 (en) | Method and apparatus for controlling screen of mobile terminal | |
| CN107068115A (en) | A kind of screen display adjusting method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |