CN104103232A - OLED displayer and method for reducing power consumption of OLED displayer - Google Patents
OLED displayer and method for reducing power consumption of OLED displayer Download PDFInfo
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- CN104103232A CN104103232A CN201410028123.6A CN201410028123A CN104103232A CN 104103232 A CN104103232 A CN 104103232A CN 201410028123 A CN201410028123 A CN 201410028123A CN 104103232 A CN104103232 A CN 104103232A
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Abstract
The invention discloses an OLED displayer and a method for reducing the power consumption of the OLED displayer. The OLED displayer comprises an R light-emitting device, a G light-emitting device and a B light-emitting device. The OLED displayer comprises at least two groups of drive voltage sources used for providing voltage to the R light-emitting device, the G light-emitting device and the B light-emitting device respectively. Different drive voltage sources are utilized to supply voltage to the R light-emitting device, the G light-emitting device and the B light-emitting device respectively, thereby preventing the surplus voltage to be consumed in a clamping fault layer of a saturation area, and reducing the power consumption of the OLED displayer screen.
Description
Technical field
The present invention relates to a kind of electronic product field, relate in particular to a kind of method of OLED display and reduction power consumption thereof.
Background technology
In electronic product field, power consumption is all the performance that user pays close attention to all the time, along with OLED display is gradually to high PPI development, how reduces power consumption and seems more important.Present AMOLED adopts compensating circuit that the needed electric current of OLED is provided, wherein crucial circuit is as shown in Figure 1, wherein M2 drives thin film transistor (TFT) TFT, D1 is Organic Light Emitting Diode OLED device, operating voltage ELVDD and earth terminal voltage ELVSS are to provide the driving voltage source of the required electric current of OLED, current design, for R, G, the different luminescent devices of B, is all used same operating voltage ELVDD and earth terminal voltage ELVSS.
The shortcoming that the method exists is: the needed electric current of OLED device of R, G, the different luminescent devices of B is different, according to BJV curve, will make corresponding voltage difference different, as shown in following table table 1, the driving voltage providing according to table 1, we arrange ELVDD is 4.6V, ELVSS is-5V, so when showing B, have the tolerance that 9.6-5.4-2(2V represents technological fluctuation) voltage consumption of=2.2V is on M2.Shown in Fig. 2, because when OLED lights, M2 is operated in saturation region, if (b) in figure bis-is exactly saturation region, so if there is unnecessary voltage, will consume in the pinch off layer of saturation region, to guarantee the current stabilization in saturation region, this is unnecessary power consumption purely.
| ? | Electric current (nA) | Driving voltage (V) | Data voltage |
| R | 78 | 6.6 | 3.1 |
| G | 68 | 7.6 | 3.2 |
| B | 114 | 5.4 | 2.9 |
Table 1
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of OLED display of the OLED of reduction power consumption for displays and reduces the method for power consumption.
For realizing above-mentioned technique effect, the invention discloses a kind of OLED display, comprise R luminescent device, G luminescent device and B luminescent device, described OLED display comprises at least two group driving voltage sources, for respectively described R luminescent device, G luminescent device and B luminescent device being carried out to voltage supply.
Described OLED display further improves and is, described R luminescent device, G luminescent device and B luminescent device are that waveform is arranged, described OLED display comprises one first driving voltage source and a second voltage drive source, by described the first driving voltage source, described R luminescent device and described B luminescent device are carried out to voltage supply, by described the second driving voltage source, described G luminescent device is carried out to voltage supply.
Described OLED display further improves and is, described R luminescent device, G luminescent device and B luminescent device are that bar shaped is arranged, described OLED display comprises one first driving voltage source, a second voltage drive source and a tertiary voltage drive source, by described the first driving voltage source, described R luminescent device is carried out to voltage supply, by described the second driving voltage source, described G luminescent device is carried out to voltage supply, by described the 3rd driving voltage source, described B luminescent device is carried out to voltage supply.
The invention also discloses a kind of method that OLED display reduces power consumption, described OLED display comprises R luminescent device, G luminescent device and B luminescent device, and voltage supply is carried out to described R luminescent device, G luminescent device and B luminescent device at least two group driving voltage sources of employing.
Described method is further improved and is, described R luminescent device, G luminescent device and B luminescent device are that waveform is arranged, adopt one first driving voltage source to carry out voltage supply to described R luminescent device and described B luminescent device, voltage supply is carried out to described G luminescent device in the one second driving voltage source of employing.
Described method is further improved and is, described R luminescent device, G luminescent device and B luminescent device are that bar shaped is arranged, adopt one first driving voltage source to carry out voltage supply to described R luminescent device, adopt one second driving voltage source to carry out voltage supply to described G luminescent device, voltage supply is carried out to described B luminescent device in one the 3rd driving voltage source of employing.
The present invention is owing to having adopted above technical scheme, making it have following beneficial effect is: by adopting different driving voltage sources to carry out voltage supply to R luminescent device, G luminescent device and B luminescent device, avoid unnecessary voltage consumption in the pinch off layer of saturation region, thereby reach the effect that reduces OLED display screen power consumption.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of existing OLED display.
Fig. 2 is the power consumption principle schematic of OLED display.
Fig. 3 is the circuit diagram that the present invention reduces method the first embodiment of OLED power consumption for displays.
Fig. 4 is the luminescent device Pareto diagram that the present invention reduces method the first embodiment of OLED power consumption for displays.
Fig. 5 is the circuit diagram that the present invention reduces method the second embodiment of OLED power consumption for displays.
Fig. 6 is the luminescent device Pareto diagram that the present invention reduces method the second embodiment of OLED power consumption for displays.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further detailed explanation.
Consult shown in Fig. 3～6, the invention discloses a kind of method of OLED display and reduction power consumption thereof, OLED display comprises R luminescent device 11, G luminescent device 12 and B luminescent device 13, according to the design driven voltage swing of R luminescent device 11, G luminescent device 12 and B luminescent device 13, adopts at least two group driving voltage sources respectively R luminescent device 11, G luminescent device 12 and B luminescent device 13 to be carried out to voltage supply.Avoid unnecessary voltage consumption in the pinch off layer of saturation region, thereby reach the effect that reduces OLED display screen power consumption.
Further coordinate shown in Fig. 3 and Fig. 4, when this OLED display adopts the white picture of point, as the first better embodiment of the present invention, the PenTile waveform arrangement mode that R luminescent device 11, G luminescent device 12 and B luminescent device 13 adopt as shown in Figure 4, its single pixel consists of two luminescent devices, a kind of is R luminescent device 11 and G luminescent device 12, and another kind is B luminescent device 13 and G luminescent device 12, and the design driven voltage of G luminescent device 12 is maximum.By 14 pairs of G luminescent devices 12 of one first drive voltage line, provide one first driving voltage source in this embodiment; By 15 pairs of R luminescent devices 11 of one second drive voltage line and B luminescent device 13, provide one second driving voltage source.
Associative list 1, in order to meet the design driven voltage of R luminescent device 11, G luminescent device 12 and B luminescent device 13, gets 9.6V as the first driving voltage source, and 8.6V is as the second driving voltage source.When G luminescent device 12 is luminous, the voltage of consume on driving thin film transistor (TFT) M2 is the tolerance that 9.6-7.6-2(2V represents technological fluctuation)=0V; When R luminescent device 11 is luminous, the voltage of consume on driving thin film transistor (TFT) M2 is the tolerance that 8.6-6.6-2(2V represents technological fluctuation)=0V; When B luminescent device 13 is luminous, the voltage of consume on driving thin film transistor (TFT) M2 is the tolerance that 8.6-5.4-2(2V represents technological fluctuation)=1.2V, compare and originally only adopt 9.6V as the situation in the driving voltage source of R luminescent device 11, G luminescent device 12 and B luminescent device 13, the present invention is guaranteeing on the normal luminous basis of luminescent device, reduced and be applied to R luminescent device 11 that design driven voltage is less and the driving voltage on B luminescent device 13, reduce consume at the voltage driving on thin film transistor (TFT) M2, thereby reduced the power consumption of OLED display.
Consult again shown in Fig. 5 and Fig. 6, the second better embodiment of the present invention, R luminescent device 11, G luminescent device 12 and B luminescent device 13 adopt Strip bar shaped as shown in Figure 6 to arrange, its single pixel consists of three different luminescent devices, R luminescent device 11, G luminescent device 12 and a B luminescent device 13.By one first drive voltage line 14 ', to R luminescent device 11, provide one first driving voltage source in this embodiment; By one second drive voltage line 15 ', to G luminescent device 12, provide one second driving voltage source; By one the 3rd drive voltage line 16 ', to B luminescent device 13, provide one the 3rd driving voltage source.
Associative list 1, in order to meet the design driven voltage of R luminescent device 11, G luminescent device 12 and B luminescent device 13, gets 9.6V as the first driving voltage source, and 8.6V is as the second driving voltage source, and 7.4V is as the 3rd driving voltage source.When G luminescent device 12 is luminous, the voltage of consume on driving thin film transistor (TFT) M2 is the tolerance that 9.6-7.6-2(2V represents technological fluctuation)=0V; When R luminescent device 11 is luminous, the voltage of consume on driving thin film transistor (TFT) M2 is the tolerance that 8.6-6.6-2(2V represents technological fluctuation)=0V; When B luminescent device 13 is luminous, the voltage of consume on driving thin film transistor (TFT) M2 is the tolerance that 7.4-5.4-2(2V represents technological fluctuation)=0V, compare and originally only adopt 9.6V as the situation in the driving voltage source of R luminescent device 11, G luminescent device 12 and B luminescent device 13, the present invention is guaranteeing on the normal luminous basis of luminescent device, reduced and be applied to R luminescent device 11 that design driven voltage is less and the driving voltage on B luminescent device 13, reduce consume at the voltage driving on thin film transistor (TFT) M2, thereby reduced the power consumption of OLED display.
Below embodiment has been described in detail the present invention by reference to the accompanying drawings, and those skilled in the art can make many variations example to the present invention according to the above description.Thereby some details in embodiment should not form limitation of the invention, the present invention will be usingd scope that appended claims defines as protection scope of the present invention.
Claims (6)
1. an OLED display, comprise R luminescent device, G luminescent device and B luminescent device, it is characterized in that: described OLED display comprises at least two group driving voltage sources, for respectively described R luminescent device, G luminescent device and B luminescent device being carried out to voltage supply.
2. OLED display as claimed in claim 1, it is characterized in that: described R luminescent device, G luminescent device and B luminescent device are that waveform is arranged, described OLED display comprises one first driving voltage source and a second voltage drive source, by described the first driving voltage source, described R luminescent device and described B luminescent device are carried out to voltage supply, by described the second driving voltage source, described G luminescent device is carried out to voltage supply.
3. OLED display as claimed in claim 1, it is characterized in that: described R luminescent device, G luminescent device and B luminescent device are that bar shaped is arranged, described OLED display comprises one first driving voltage source, a second voltage drive source and a tertiary voltage drive source, by described the first driving voltage source, described R luminescent device is carried out to voltage supply, by described the second driving voltage source, described G luminescent device is carried out to voltage supply, by described the 3rd driving voltage source, described B luminescent device is carried out to voltage supply.
4. an OLED display reduces the method for power consumption, described OLED display comprises R luminescent device, G luminescent device and B luminescent device, it is characterized in that: voltage supply is carried out to described R luminescent device, G luminescent device and B luminescent device at least two group driving voltage sources of employing.
5. method as claimed in claim 4, it is characterized in that: described R luminescent device, G luminescent device and B luminescent device are that waveform is arranged, adopt one first driving voltage source to carry out voltage supply to described R luminescent device and described B luminescent device, voltage supply is carried out to described G luminescent device in the one second driving voltage source of employing.
6. method as claimed in claim 4, it is characterized in that: described R luminescent device, G luminescent device and B luminescent device are that bar shaped is arranged, adopt one first driving voltage source to carry out voltage supply to described R luminescent device, adopt one second driving voltage source to carry out voltage supply to described G luminescent device, voltage supply is carried out to described B luminescent device in one the 3rd driving voltage source of employing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018184325A1 (en) * | 2017-04-06 | 2018-10-11 | 华为技术有限公司 | Display screen control method and terminal |
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| CN101123067A (en) * | 2006-07-19 | 2008-02-13 | 索尼株式会社 | Display apparatus, driving method thereof and electronic device |
| US20110291549A1 (en) * | 2010-05-31 | 2011-12-01 | Gun-Shik Kim | Pixel arrangement of an organic light emitting display device |
| CN102867480A (en) * | 2011-07-05 | 2013-01-09 | 三星电子株式会社 | Display apparatus and method for driving the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123067A (en) * | 2006-07-19 | 2008-02-13 | 索尼株式会社 | Display apparatus, driving method thereof and electronic device |
| US20110291549A1 (en) * | 2010-05-31 | 2011-12-01 | Gun-Shik Kim | Pixel arrangement of an organic light emitting display device |
| CN102867480A (en) * | 2011-07-05 | 2013-01-09 | 三星电子株式会社 | Display apparatus and method for driving the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018184325A1 (en) * | 2017-04-06 | 2018-10-11 | 华为技术有限公司 | Display screen control method and terminal |
| US11205384B2 (en) | 2017-04-06 | 2021-12-21 | Huawei Technologies Co., Ltd. | Display screen control method and terminal |
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Application publication date: 20141015 |