CN101295466B - OLED display screen brightness regulation method and OLED display screen - Google Patents
OLED display screen brightness regulation method and OLED display screen Download PDFInfo
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- CN101295466B CN101295466B CN2008100675393A CN200810067539A CN101295466B CN 101295466 B CN101295466 B CN 101295466B CN 2008100675393 A CN2008100675393 A CN 2008100675393A CN 200810067539 A CN200810067539 A CN 200810067539A CN 101295466 B CN101295466 B CN 101295466B
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Abstract
The invention relates to an OLED display screen brightness regulating method and an OLED display screen. The method comprises the following steps: A1), the OLED display screen is scanned to get working powers Pi (i can be equal to 1, 2, 3 ellipsis L) of each pixel point; A2), the illumination time of each pixel point is regulated according to the power of each pixel point, and the regulated illumination time of each pixel points is in inverse proportion to power. The OLED display screen comprises a main control module which comprises a scanning module and a time regulating module. The time regulating module controls a driving module to regulate the illumination time of each pixel point according to the power of each pixel point, and the regulated illumination time is in inverse proportionto power. The OLED display screen brightness regulating method of the invention regulates the brightness of each pixel points through regulating the illumination time of pixel points of the OLED display screen to obtain a unified brightness of all the pixel points. The OLED display screen of the invention can result in an equal illumination effect of the OLED display screen through regulating theillumination time of each pixel point.
Description
Technical field
The present invention relates to LCDs, more particularly, relate to the method that a kind of OLED display screen and OLED display screen are regulated brightness.
Background technology
OLED (Organic Light Emitting Diode, Chinese is Organic Light Emitting Diode), the OLED display screen does not need backlight compared with traditional LCD, and power consumption is lower, and profile is thinner, and brightness is higher, and vision is wider.But the display brightness problem of non-uniform of OLED is one of bottleneck of its development.And the essence of brightness irregularities is the unevenness of organic membrane, causes the operating power of each luminous point inconsistent, makes its non-uniform light.
Summary of the invention
The technical problem to be solved in the present invention is, the defective at the above-mentioned OLED display screen non-uniform light of prior art provides a kind of OLED display screen to regulate the method for brightness.
The technical solution adopted for the present invention to solve the technical problems is: construct the method that a kind of OLED display screen is regulated brightness, comprise the steps:
A1) each picture element of scanning OLED display screen obtains the electric current and the voltage of each picture element, again according to the result of scanning calculate each picture element operating power Pi (i=1,2,3.....L), L is a positive integer;
A2) adjust the fluorescent lifetime of each picture element according to the power of each picture element, the fluorescent lifetime of adjusted picture element and its power are inversely proportional to.
Regulate in the method for brightness at OLED display screen of the present invention, in described steps A 2, the fluorescent lifetime of the picture element after the adjusting is: Ti=M/Pi, and wherein M is a constant, and Ti is for adjusting the fluorescent lifetime of i the point in back, and Pi is the power of i point.
Regulate in the method for brightness at OLED display screen of the present invention, described constant M=P*T, wherein P is the average power of each picture element before adjusting, T is the average luminescence time of each picture element before adjusting.
Regulate in the method for brightness at OLED display screen of the present invention, described OLED display screen is the constant current display screen, in described steps A 1, comprises the steps:
A1.1) scan each picture element, measure the operating voltage of each picture element;
A1.2) do the multiplying processing with the operating voltage and the continuous current of each picture element, obtain the operating power of all picture elements.
Regulate in the method for brightness at OLED display screen of the present invention, described OLED display screen is the constant voltage display screen, in described steps A 1, comprises the steps:
A1.1) scan each picture element, measure the working current of each picture element;
A1.2) do the multiplying processing with the working current and the constant voltage voltage of each picture element, obtain the operating power of all picture elements.
Regulate in the method for brightness at OLED display screen of the present invention, in described steps A 1, the method for scanning OLED display screen is scanning line by line.
Regulate in the method for brightness at OLED display screen of the present invention, in described steps A 1.1, comprise the steps:
A1.1.1) initialization makes i=1;
A1.1.2) selected i row picture element (i=1,2,3......N), scan this and be listed as all picture elements, obtain the operating voltage or the electric current of each picture element of these row;
A1.1.3) judge whether i equals N, if, finish scanning, if not, make execution in step A1.1.2 behind the i=i+1.
Regulate in the method for brightness at OLED display screen of the present invention, in described steps A 1.1, comprise the steps:
A1.1.1) initialization makes i=1;
A1.1.2) the selected capable picture element of i (i=1,2,3......N), scan all picture elements of this row, obtain the operating voltage or the electric current of each picture element of this row;
A1.1.3) judge whether i equals N, if, finish scanning, if not, make execution in step A1.1.2 behind the i=i+1.
The technical problem to be solved in the present invention is, defective at the above-mentioned OLED display screen non-uniform light of prior art, a kind of luminous uniform OLED display screen is provided, comprise main control module, cell array, be used to drive the luminous driver module of described picture element, described driver module links to each other with described driving circuit with described cell array respectively, described main control module comprises scan module and time adjustment module, described scan module scans each picture element, obtain the electric current and the voltage of each picture element, calculate the power of each picture element in the cell array again according to the result of scanning, described time adjustment module is controlled the fluorescent lifetime that described driver module is regulated each picture element according to the power of each picture element, and fluorescent lifetime after the adjusting and described power are inversely proportional to.
Implement OLED display screen of the present invention and regulate the method and the OLED display screen of brightness, has following beneficial effect, OLED display screen of the present invention is regulated the method for brightness and is crossed the brightness that the fluorescent lifetime that changes OLED display screen picture element is adjusted each picture element, make that the brightness of each picture element is unified, OLED display screen of the present invention makes the OLED display screen luminous evenly by the fluorescent lifetime of regulating each picture element.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the method flow diagram that OLED display screen of the present invention is regulated brightness;
Fig. 2 is the structured flowchart of OLED display screen of the present invention;
Fig. 3 is the hardware elementary diagram of OLED display screen of the present invention.
Embodiment
Fig. 1 is the method flow diagram that OLED display screen of the present invention is regulated brightness
OLED display screen of the present utility model is regulated the brightness method, comprises the steps:
S1 scanning OLED display screen, obtain each picture element operating power Pi (i=1,2,3.....L), L is the number of all picture elements, is positive integer;
S2 adjusts the fluorescent lifetime of each picture element according to the power of each picture element, and the fluorescent lifetime and the power of adjusted picture element are inversely proportional to.
In described step S2, the time method of giving out light of calculating described picture element is: a constant M is set, and the fluorescent lifetime of adjusted each picture element is: Ti=M/Pi, wherein Ti is for adjusting the fluorescent lifetime of i the point in back.Constant M=P*T wherein, wherein P is the average power of each picture element before adjusting, T is the average luminescence time of each picture element before adjusting.
If the OLED display screen is the constant current display screen, in step S1, comprise the steps:
S1.1 scans each picture element, measures the operating voltage of each picture element;
S1.2 does the multiplying processing with the operating voltage and the constant current source electric current of each picture element, obtains the operating power of all picture elements.
If the OLED display screen is the constant voltage display screen, in described step S1, comprise the steps:
S1.1 scans each picture element, measures the working current of each picture element;
S1.2 does the multiplying processing with the working current and the constant source voltage of each picture element, obtains the operating power of all picture elements.
Concrete scan mode can adopt following two kinds of scan modes for scanning line by line in step S1.1
The selected row OLED display screen picture element of S1.1.1;
S1.1.2 obtains this operating voltage that is listed as each picture element or electric current by each row of column scan.
Perhaps in the following way:
The OLED display screen picture element of the selected delegation of S1.1.1;
S1.1.2 lines by line scan, and each is listed as, and obtains the operating voltage or the electric current of this each picture element of row.
OLED display screen of the present invention is described below regulates a kind of concrete embodiment of the method for brightness:
The S1 initialization makes i=1;
S2 select the capable picture element of i (i=1,2,3......N), scan all picture elements of this row, obtain the operating voltage or the electric current of each picture element of this row;
S3 judges whether i equals N, if, finish scanning, if not, make execution in step S2 behind the i=i+1;
S4 adjusts the fluorescent lifetime of each picture element according to the power of each picture element, and the fluorescent lifetime and the power of adjusted picture element are inversely proportional to; The fluorescent lifetime of adjusted each picture element is: Ti=P*T/Pi, and wherein Ti is for adjusting the fluorescent lifetime of i the point in back, and wherein P is the average power of each picture element before adjusting, and T is the average luminescence time of each picture element before adjusting.
As shown in Figure 2, the structured flowchart for OLED display screen of the present invention comprises main control module, and cell array is used to drive the luminous driver module of described picture element, and driver module links to each other with described driving circuit with described cell array respectively.Wherein main control module comprises scan module and time adjustment module, scan module scanning obtains the power of each picture element in the cell array, the time adjustment module is regulated the fluorescent lifetime of each picture element according to the power control and driving module of each picture element, and fluorescent lifetime after the adjusting and described power are inversely proportional to.
Fig. 3 is the hardware elementary diagram of OLED display screen of the present invention, and wherein main control module is by chip microcontroller, and driver module comprises that row drives and row drive, and single-chip microcomputer and row drive to drive with row and link to each other, and row drives that driving links to each other with the OLED cell array with row.Single-chip microcomputer is given an order, and enters single-chip microcomputer after the operating voltage process A/D channel selecting of OLED and carries out the A/D conversion.Single-chip microcomputer obtains the operating voltage of corresponding OLED pixel.Last single-chip microcomputer calculates according to the voltage or the electric current that obtain again, regulates the fluorescent lifetime of each picture element according to result calculated.More than proofread and correct before the OLED display screen is dispatching from the factory and just finish in advance.
Claims (9)
1. the method that the OLED display screen is regulated brightness is characterized in that, comprises the steps:
A1) each picture element of scanning OLED display screen obtains the electric current and the voltage of each picture element, again according to the result of scanning calculate each picture element operating power Pi (i=1,2,3.....L), L is a positive integer;
A2) adjust the fluorescent lifetime of each picture element according to the power of each picture element, the fluorescent lifetime of adjusted picture element and its power are inversely proportional to.
2. OLED display screen according to claim 1 is regulated the method for brightness, it is characterized in that, in described steps A 2, the fluorescent lifetime of the picture element after the adjusting is: Ti=M/Pi, wherein M is a constant, and Ti is for adjusting the fluorescent lifetime of i the point in back, and Pi is the power of i point.
3. OLED display screen according to claim 2 is regulated the method for brightness, it is characterized in that, and described constant M=P*T, wherein P is the average power of each picture element before adjusting, T is the average luminescence time of each picture element before adjusting.
4. OLED display screen according to claim 1 is regulated the method for brightness, it is characterized in that described OLED display screen is the constant current display screen, in described steps A 1, comprises the steps:
A1.1) scan each picture element, measure the operating voltage of each picture element;
A1.2) do the multiplying processing with the operating voltage and the continuous current of each picture element, obtain the operating power of all picture elements.
5. OLED display screen according to claim 1 is regulated the method for brightness, it is characterized in that described OLED display screen is the constant voltage display screen, in described steps A 1, comprises the steps:
A1.1) scan each picture element, measure the working current of each picture element;
A1.2) do the multiplying processing with the working current and the constant voltage voltage of each picture element, obtain the operating power of all picture elements.
6. OLED display screen according to claim 1 is regulated the method for brightness, it is characterized in that, in described steps A 1, the method for scanning OLED display screen is scanning line by line.
7. OLED display screen according to claim 4 is regulated the method for brightness, it is characterized in that, in described steps A 1.1, comprises the steps:
A1.1.1) initialization makes i=1;
A1.1.2) selected i row picture element (i=1,2,3......N), scan this and be listed as all picture elements, obtain the operating voltage or the electric current of each picture element of these row;
A1.1.3) judge whether i equals N, if, finish scanning, if not, make execution in step A1.1.2 behind the i=i+1.
8. OLED display screen according to claim 4 is regulated the method for brightness, it is characterized in that, in described steps A 1.1, comprises the steps:
A1.1.1) initialization makes i=1;
A1.1.2) the selected capable picture element of i (i=1,2,3......N), scan all picture elements of this row, obtain the operating voltage or the electric current of each picture element of this row;
A1.1.3) judge whether i equals N, if, finish scanning, if not, make execution in step A1.1.2 behind the i=i+1.
9. OLED display screen, comprise main control module, cell array, be used to drive the luminous driver module of described picture element, described driver module links to each other with described main control module with described cell array respectively, it is characterized in that, described main control module comprises scan module and time adjustment module, described scan module scans each picture element, obtain the electric current and the voltage of each picture element, calculate the power of each picture element in the cell array again according to the result of scanning, described time adjustment module is controlled the fluorescent lifetime that described driver module is regulated each picture element according to the power of each picture element, and fluorescent lifetime after the adjusting and described power are inversely proportional to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100675393A CN101295466B (en) | 2008-05-30 | 2008-05-30 | OLED display screen brightness regulation method and OLED display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110446019A (en) * | 2019-07-17 | 2019-11-12 | 成都理想境界科技有限公司 | A kind of optical fiber scanning optical projection system and its modulator approach |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103198790A (en) * | 2013-03-15 | 2013-07-10 | 向运明 | Self-illumination display device and method for revising inconsistence of luminance of display units |
| CN104680979B (en) * | 2015-03-23 | 2019-03-12 | 京东方科技集团股份有限公司 | The method of OLED display and the image retention for correcting OLED display |
| CN105333892A (en) * | 2015-12-11 | 2016-02-17 | 四川海天仪表电器开发有限公司 | Vehicle curved-surface combination instrument |
| CN109243396B (en) * | 2018-11-07 | 2021-02-26 | 惠科股份有限公司 | Brightness adjusting method and system of display system and display system |
| CN115881021B (en) * | 2023-03-03 | 2023-05-12 | 北京数字光芯集成电路设计有限公司 | Display control circuit and method, and micro display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446019A (en) * | 2019-07-17 | 2019-11-12 | 成都理想境界科技有限公司 | A kind of optical fiber scanning optical projection system and its modulator approach |
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