CN105096788B - The power consumption detection method and device of OLED display screen - Google Patents

The power consumption detection method and device of OLED display screen Download PDF

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Publication number
CN105096788B
CN105096788B CN201510617720.7A CN201510617720A CN105096788B CN 105096788 B CN105096788 B CN 105096788B CN 201510617720 A CN201510617720 A CN 201510617720A CN 105096788 B CN105096788 B CN 105096788B
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display screen
oled display
pixel
current
oled
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CN105096788A (en
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陈超鑫
苏远腾
付喜
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Abstract

The invention provides the power consumption detection method and device of a kind of OLED display screen.The power consumption detection method of the OLED display screen includes：Parameters acquiring procedure：By showing monochromatic test pictures in the OLED display screen and detecting the electric current of OLED display screen consuming simultaneously, obtain multiple monochromatic current coefficients, hybrid current coefficient corresponding with the colour sum of each sub-pixel in the pixel that the OLED display screen includes, and OLED bottoms electricity；The one monochromatic current coefficient is corresponding with the colour of the sub-pixel in the pixel that the OLED display screen includes；Current detection step：The brightness of the colour, OLED display screen of sub-pixel in the pixel included according to the multiple monochromatic current coefficient, the hybrid current coefficient, OLED bottoms electricity, OLED display screen obtains the electric current of OLED display screen consuming.The present invention can accurately detect to obtain the electric current of OLED display screen consuming.

Description

The power consumption detection method and device of OLED display screen
Technical field
The present invention relates to the power consumption detection of OLED display screen power consumption detection technique field, more particularly to a kind of OLED display screen Method and apparatus.
Background technology
Recently as the continuous development of smart mobile phone, display screen becomes the indispensable key player of human-computer interaction. OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display screens are because it is with more frivolous, clever The advantages that quick, highlighted, bright-coloured, wide viewing angle, power saving, slowly substituted traditional LCD (Liquid Crystal Display, Liquid crystal display).But but stagnated always for the computing technique of the power consumption of OLED display screen, still continue to use traditional Calculations of the LCD based on backlight illumination, the precision of whole system power consumption statistics is had a strong impact on.
Traditional LC D power consumption composition is mainly screen power consumption itself and backlight power consumption, and the display screen that wherein LCD includes itself is bright Degree is fixed value, and then as brightness degree is different and different, power consumption closes with backlight level close to linear positive for backlight power consumption System.But OLED display screen uses the autonomous characteristics of luminescence, has overturned traditional LC D displaying principle, the composition of OLED display screen power consumption Also with being very different in the past, if continuing to use traditional LC D power consumption calculation methods, the power consumption number of the OLED display screen calculated is with reality Actual value error can be even more big more than 200%.High accounting part of the screen power consumption as display device power consumption, directly affects whole The statistics of individual display device total power consumption and respectively using power consumption accounting count.
The content of the invention
It is a primary object of the present invention to provide the power consumption detection method and device of a kind of OLED display screen, solves existing skill The problem of current detecting inaccuracy that OLED display screen expends in art.
In order to achieve the above object, the invention provides a kind of power consumption detection method of OLED display screen, it is characterised in that Including：
Parameters acquiring procedure：By showing monochromatic test pictures in OLED display screen and detecting the OLED display screen simultaneously The color of each sub-pixel in the pixel that the electric current of consuming, the multiple monochromatic current coefficients of acquisition and the OLED display screen include It is worth hybrid current coefficient corresponding to sum, and OLED bottoms electricity；The one monochromatic current coefficient includes with the OLED display screen Pixel in a sub-pixel colour it is corresponding；
Current detection step：According to the multiple monochromatic current coefficient, the hybrid current coefficient, the OLED bottoms electricity, The brightness of the colour of sub-pixel in the pixel that the OLED display screen includes, the OLED display screen obtains the OLED and shown Shield the electric current expended；
Compared with prior art, the power consumption detection method of OLED display screen of the present invention and device pass through described Monochromatic test pictures are shown in OLED display screen and detect the electric current of OLED display screen consuming simultaneously, with reference to OLED pixel face Color, the brightness of OLED display screen, OLED bottoms electricity, so as to obtain the electric current that the OLED display screen expends, can accurately be detected The electric current expended to the OLED display screen.
Brief description of the drawings
Fig. 1 is the flow chart of the power consumption detection method of the OLED display screen described in the embodiment of the present invention；
Fig. 2 is the flow chart of a specific embodiment of the power consumption detection method of OLED display screen of the present invention；
Fig. 3 is the structured flowchart of the power-comuption detecting device of the OLED display screen described in the embodiment of the present invention；
Fig. 4 is a specific reality of the parameter acquiring unit that the power-comuption detecting device of OLED display screen of the present invention includes Apply the structured flowchart of example；
Fig. 5 is a specific reality of the current detecting unit that the power-comuption detecting device of OLED display screen of the present invention includes Apply the structured flowchart of example.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
As shown in figure 1, the power consumption detection method of the OLED display screen described in the embodiment of the present invention, including：
Parameters acquiring procedure 11：Shown by showing monochromatic test pictures in OLED display screen and detecting the OLED simultaneously Shield the electric current expended, obtain multiple monochromatic current coefficients, each sub-pixel in the pixel included with the OLED display screen Hybrid current coefficient corresponding to colour sum, and OLED bottoms electricity；The one monochromatic current coefficient and the OLED display screen bag The colour of a sub-pixel in the pixel included is corresponding；
Current detection step 12：According to the multiple monochromatic current coefficient, the hybrid current coefficient, the OLED bottoms The brightness of the colour, the OLED display screen of sub-pixel in the pixel that electric, described OLED display screen includes obtains the OLED The electric current that display screen expends；
The parameters acquiring procedure includes：Obtain and show what is expended during a frame black test picture in the OLED display screen Electric current is OLED bottoms electricity.
The power consumption detection method of OLED display screen described in the embodiment of the present invention, by being shown in the OLED display screen Monochromatic test pictures and simultaneously detect the OLED display screen consuming electric current, with reference to OLED pixel color, OLED display screen it is bright Degree, OLED bottoms electricity, so as to obtain the electric current that the OLED display screen expends, it can accurately detect to obtain the OLED display screen consumption The electric current taken.
In theory, the electric current that OLED display screen expends only when OLED display screen does not work is only 0, and the present invention will be The electric current that OLED display screen expends when black test picture (colour of i.e. all sub-pixels is all 0) is shown in OLED display screen is determined Justice is OLED bottoms electricity OLED_self.
According to a kind of embodiment, the pixel in the OLED display screen includes red sub-pixel, green sub-pixels And blue subpixels；
The parameters acquiring procedure includes：
It is set in when showing monochromatic test pictures in the OLED display screen, all phases that the OLED display screen includes It is all identical with the colour of the sub-pixel of color；
It is as follows to set OLED display screen testing current formula：
Power_oled=Screen_Size × (Rcorf × R2+Gcorf×G2+Bcorf×B2-MIXcorf×(R+G+ B)2)×BrightnessLevel+OLED_self；
Wherein, Power_oled is the electric current that OLED display screen expends, and Screen_Size is that the OLED display screen includes Pixel number, Rcorf is red current coefficient, and Gcorf is green current coefficient, and Bcorf is blue current coefficient, MIXcorf is hybrid current coefficient, and OLED_self is OLED bottoms electricity, and R is the red sub-pixel that the OLED display screen includes Colour, G are the colour for the green sub-pixels that the OLED display screen includes, and B is the blue sub- picture that the OLED display screen includes The colour of element, BrightnessLevel are the brightness of the OLED display screen；
A frame white test pictures, a frame red test picture, frame green test are shown in the OLED display screen Picture and a frame blueness test pictures, and obtain what is expended corresponding to the OLED display screen of each frame monochrome test pictures by detecting Electric current substitutes into the OLED display screen testing current formula, with obtain red current coefficient Rcorf, green current coefficient Gcorf, Blue current coefficient B corf and hybrid current coefficient MIXcorf.
Specifically, described show white test pictures, red test picture, green test picture in the OLED display screen Face and blue test pictures, and obtain the electric current substitution for the OLED display screen consuming for corresponding to each monochromatic test pictures by detecting The OLED display screen testing current formula, to obtain red current coefficient Rcorf, green current coefficient Gcorf, blue current Coefficient B corf and hybrid current coefficient MIXcorf steps include：
When setting the OLED display screen and showing the white test pictures, all sub-pixels in the OLED display screen Colour all be 255；
When setting the OLED display screen and showing the red test picture, all red sons in the OLED display screen The colour of pixel is all 255, in the colour and the OLED display screen of all green sub-pixels in the OLED display screen The colour of all blue subpixels is all 0；
When setting the OLED display screen and showing the green test pictures, all green in the OLED display screen The colour of pixel is all 255, in the colour and the OLED display screen of all red sub-pixels in the OLED display screen The colour of all blue subpixels is all 0；
When setting the OLED display screen and showing the blue test pictures, all blueness in the OLED display screen The colour of pixel is all 255, in the colour and the OLED display screen of all red sub-pixels in the OLED display screen The colour of all green sub-pixels is all 0；
Full brightness BrightnessLevel_Max and bottom brightness BrightnessLevel_Min are preset, the bottom is bright Spend BrightnessLevel_Min and be not equal to 0；
The full brightness BrightnessLevel_Max and bottom brightness BrightnessLevel_Min is by power consumption Testing staff is set in advance；
When the brightness of the OLED display screen be full brightness BrightnessLevel_Max and the OLED display screen it is bright Spend for bottom brightness BrightnessLevel_Min when, detect white test is shown described in a frame in the OLED display screen respectively Red test picture described in picture, a frame, green test pictures described in a frame and described in a frame during blue test pictures described in The electric current that OLED display screen expends, and the OLED display screen consuming corresponding to each frame monochrome test pictures that detection is obtained Electric current substitutes into the OLED display screen testing current formula, with obtain red current coefficient Rcorf, green current coefficient Gcorf, Blue current coefficient B corf and hybrid current coefficient MIXcorf.
Specifically, the current detection step includes：
When showing a frame picture in the OLED display screen, included according to the pixel in the OLED display screen each The brightness for the sub-pixel that pixel in the colour of sub-pixel, the OLED display screen includes and pixel current calculation formula are somebody's turn to do The electric current Power_pixel that pixel expends；
The pixel current calculation formula is as follows：Power_pixel=(Rcorf × R2+Gcorf×G2+Bcorf×B2- MIXcorf×(R+G+B)2)×BrightnessLevel；
The electric current sum that all pixels in the OLED display screen expend is the electric current that the OLED display screen expends.
Specifically, the current detection step includes：
Sampling step：The frame period is grabbed every predetermined, samples the OLED display screen previous frame image, and obtain the two field picture On predetermined number the brightness of the colour and the OLED display screen of each sub-pixel that includes of pixel；
OLED display screen expends current detection step：The pixel for drawing the predetermined number according to pixel current calculation formula consumes The total current taken, the total current divided by the predetermined number are obtained into mean pixel electric current；The electric current that the OLED display screen expends The number Screen_size for the sub-pixel that the OLED display screen includes is multiplied by for the mean pixel electric current；
The pixel current calculation formula is as follows：Power_pixel=(Rcorf × R2+Gcorf×G2+Bcorf×B2- MIXcorf×(R+G+B)2)×BrightnessLevel；
Power_pixel is the electric current that single pixel expends.
Specifically, the sampling step also includes：When a triggered event is detected, a two field picture is obtained, described in sampling The brightness of the colour and the OLED display screen of each sub-pixel that the pixel of predetermined number in OLED display screen includes.
Specifically, the trigger event includes the brightness change and/or display interface switching of display screen.
Due to OLED main light emissions, so each pixel in OLED display screen is independent power consumption body, therefore OLED shows The electric current Power_OLED that display screen expends is the summation for the electric current Power_pixel that the pixel in OLED display screen expends；
The power consumption of each pixel is only dependent upon two factors：The present intensity of pixel color and display screen BrightnessLevel；
Pixel is determined that R, G, B three primary colours account for 8, span 0-255 respectively by 32 ARGB values, and according to experiment Understand that Alpha (Alpha) value of pixel does not interfere with the power consumption of OLED display screen；
Find that the monochromatic growth of R, G, B is directly proportional to power consumption, therefore it is as follows to obtain monochromatic power consumption according to single change in experiment：
Power_single_red=Rcorf × (R/255) R；
Power_single_green=Gcorf × (G/255) G；
Power_single_blue=Bcorf × (B/255) B；
Power_single_red is the electric current that red sub-pixel expends, and Power_single_green is green sub-pixels The electric current of consuming, Power_single_blue are the electric current that blue subpixels expend, and Rcorf is red current coefficient, Gcorf For green current coefficient, Bcorf is blue current coefficient, and R is the colour of red sub-pixel, and G is the colour of green sub-pixels, B For the colour of blue subpixels；
But can show various different colours when the various combinations of RGB, now pixel color electric current Power_color is not but It is equal to the addition for the electric current that each sub-pixel expends merely, by controlling RGB simultaneous growth tests to draw, it is necessary in each height picture Hybrid current value Power_mix is subtracted on the basis of the addition for the electric current that element expends；
Power_color=Power_single_red+Power_single_green+Power_si ngle_blue- Power_mix；
It is directly proportional to (R+G+B) to obtain Power_mix by experiment, therefore is obtained：
Power_mix=MIXcorf × ((R+G+B)/(255 × 3)) × (R+G+B)；
MIXcorf is hybrid current coefficient；
From the foregoing, it will be observed that Power_color=Rcorf × (R/255) R+Gcorf × (G/255) G+Bcorf × (B/255) B—MIXcorf×((R+G+B)/(255×3))×(R+G+B)；
By controlling color factors constant, present intensity is adjusted, it is found that the electric current Power_pixel that pixel expends It is directly proportional to the brightness BrightnessLevel of OLED display screen growth；
Power_pixel=Power_color × (Brcorf × BrightnessLevel), Brcorf are BrightnessLevel proportionate relationship；
When the colour G of colour R, green sub-pixels when red sub-pixel and the colour B of blue subpixels are 0, now Power_pixel=0 is calculated by above-mentioned formula, thus obtains Power_oled=0, but this result is not met but The actual power consumption of OLED display screen, the electric current that OLED display screen expends when only OLED display screen is powered off in theory are 0, thus the present invention by when showing black test picture (colour of i.e. all sub-pixels all be 0) in OLED display screen OLED show The current definition that display screen expends is OLED bottoms electricity OLED_self；
Power_pixel=(Rcorf × (R/255) R+Rcorf × (G/255) G+Rcorf × (B/255) B-MIXcorf ×((R+G+B)/(255×3))×(R+G+B))×(Brcorf×BrightnessLevel)；
It is as follows to obtain formula with independently going out fixed relationship value for variables separation：
Power_pixel=((Rcorf × Brcorf/255) × R × R+ (Gcorf × Brcorf/255) × G × G+ (Bcorf×Brcorf/255)×B×B-(MIXcorf×Brcorf/(255×3))×((R+G+B)×(R+G+B)))× BrightnessLevel；
Further simplified below, (Rcorf × Brcorf/255) is defined as new Rcorf, will (Gcorf × Brcorf/255 new Gcorf) is defined as, (Bcorf × Brcorf/255) is defined as new Bcorf, will (MIXcorf × Brcorf/ (255 × 3)) it is defined as new MIXcorf；
Then the calculation formula for the electric current that pixel expends is as follows：Power_pixel=((Rcorf × R × R)+(Gcorf × G ×G)+(Bcorf×B×B)–MIXcorf×(R+G+B)×(R+G+B))×BrightnessLevel；
The electric current Power_oled that OLED display screen expends is the total of the electric current that all pixels in OLED display screen expend And between the electricity of OLED bottoms and value, OLED display screen expend electric current specific formula for calculation it is as follows：
Power_oled=Screen_size × ((Rcorf × R × R)+(Gcorf × G × G)+(Bcorf × B × B)- MIXcorf×(R+G+B)×(R+G+B))×BrightnessLevel+OLED_self
Wherein, Screen_Size is the number for the pixel that the OLED display screen includes, and MIXcorf is hybrid current system Number, OLED_self are OLED bottoms electricity, and BrightnessLevel is the brightness of the OLED display screen, and Rcorf is red electric current Coefficient, Gcorf are green current coefficient, and Bcorf is blue current coefficient, and R is the colour of red sub-pixel, and G is the sub- picture of green The colour of element, B are the colour of blue subpixels.
Power_oled calculation formula can be obtained by the above method, and by setting OLED display screen in full brightness Show pure color under the conditions of BrightnessLevel_Max and bottom brightness BrightnessLevel_Min obtain Rcorf, Gcorf, Bcorf and MIXcorf value；
When the brightness of the OLED display screen is respectively completely brightness BrightnessLevel_Max and bottom brightness During BrightnessLevel_Min, a frame white test pictures, a frame red test are shown respectively in the OLED display screen Picture, a frame green test pictures and a frame blueness test pictures；
When showing a frame white test pictures in OLED display screen, all pixels in the OLED display screen include The colour of red sub-pixel be all 255, the colour for the green sub-pixels that all pixels in the OLED display screen include is 255, the colour for the blue subpixels that all pixels in the OLED display screen include is 255；
When showing a frame red test picture in OLED display screen, all pixels in the OLED display screen include The colour of red sub-pixel be all 255, the colour for the green sub-pixels that all pixels in the OLED display screen include is 0, the colour for the blue subpixels that all pixels in the OLED display screen include is 0；
When showing a frame green test pictures in OLED display screen, all pixels in the OLED display screen include The colour of red sub-pixel be all 0, the colour for the green sub-pixels that all pixels in the OLED display screen include is 255, the colour for the blue subpixels that all pixels in the OLED display screen include is 0；
When showing a frame blueness test pictures in OLED display screen, all pixels in the OLED display screen include The colour of red sub-pixel be all 0, the colour for the green sub-pixels that all pixels in the OLED display screen include is 0, The colour for the blue subpixels that all pixels in the OLED display screen include is 255；
And obtained detecting described in the electric current substitution expended corresponding to the OLED display screen of each frame monochrome test pictures OLED display screen testing current formula, can be to obtain red current coefficient Rcorf, green current coefficient Gcorf, blue current Coefficient B corf and hybrid current coefficient MIXcorf.
In practical operation, include in detection display device (display device for example can be mobile phone or computer) It is not to be powered by battery or external power supply to display device during the electric current that OLED display screen expends, but by one specially The electric supply installation that can detect output current in real time of door is powered to the display device, the electric current that detection OLED display screen expends Mode i.e. first detection connects screen electric current and detects pull out screen electric current again, and the screen electric current and the difference for pulling out screen electric current of connecing is described The electric current that OLED display screen expends；
The screen electric current that connects is not pull out the electric current that the display device expends during display screen, described to pull out screen electric current to pull out The electric current that the display device expends during display screen.
The present invention solves the calculating of OLED screen electric current by above method, can monitor OLED display screen in theory and show The electric current expended during each frame picture, but in actual applications, since it is considered that current flow calculating speed and frame refresh rate, Also current flow calculating also can be used for OLED display screen by energy consumption, therefore by current calculation method of the present invention in itself Power consumption statistics reasonably grabs frame rate, it is necessary to set, and designs the rational pixel sampling of each frame；
When OLED display screen is shown, as long as influenceing R, G, B and BrightnessLevel of the variable pixel of electric current；
When counting OLED power consumptions in practice, set and grab the frame period every predetermined and go to read the OLED display screen previous frame Image, and the pixel of predetermined number in the two field picture is sampled, the son included according to the brightness of the OLED display screen and the pixel The colour of pixel calculates pixel average current, then the pixel average current is multiplied by into total number of pixels, so as to obtain the OLED Display screen shows the electric current expended during the two field picture.After time interval, then grab a frame and equally calculate the frame electric current, such as This can calculate the predetermined specific power consumption for grabbing OLED display screen in the frame period, and repeatedly the OLED that goes to count of a period of time shows in this way The total power consumption of display screen consumption.
In practical operation, it is assumed that each two field picture shown in the OLED display screen includes 1920 × 1380 pictures Element, then 640 × 460 pixels in the upper left corner of a two field picture can be sampled to calculate pixel average current, so taken into account The degree of accuracy of calculating and time and the power consumption for calculating consuming.
2 points with reference to more than, OLED power consumptions statistics binding time piece polling mechanism, can also more flexibly can increase The trigger event of BrightnessLevel (brightness of OLED display screen) changes, display interface switching as renewal power consumption calculation (just sampling current frame image when there is trigger event generation), real-time statistics OELD display screen power consumptions can be accomplished.
Illustrate the computational methods for the electric current that above-mentioned OLED screen expends below by flow chart as shown in Figure 2：
S1：OLED display screen power consumption statistics starts, and calculates display electric current (the i.e. OLED display screen of present frame OLED display screen Show the electric current expended during current frame image) old_power, and record current time old_time；
S2：The frame period is grabbed etc. scheduled；
S3：Judge whether there is trigger event, be to go to S4, otherwise go to S2；
The trigger event includes being spaced the predetermined brightness for grabbing frame period, OLED display screen BrightnessLevel changes or display interface switching；
S4：Current time cur_time is recorded, reads current frame image, and sample the predetermined number on the current frame image Pixel, calculate present frame and show electric current cur_power, calculate that this minor tick is predetermined to grab with reference to old_time and old_power The power consumption of frame period OLED display screen, then old_time and old_power renewals are carried out, go to S2.
By using the power consumption statistical method of the OLED display screen of the present invention as described in Figure 2, by occurring in trigger event When sample OLED display screen current frame image, and not when real-time sampling OLED display screen each two field picture, can either be accurate Calculating OLED display screen expend electric current and the power consumption in a period of time, save again needed for each two field picture of real-time sampling Power consumption.
As shown in figure 3, the power-comuption detecting device of the OLED display screen described in the embodiment of the present invention, including：
Parameter acquiring unit 31, for by showing monochromatic test pictures in OLED display screen and detecting the OLED simultaneously The electric current that display screen expends, obtain each height picture in multiple monochromatic current coefficients, the pixel included with the OLED display screen Hybrid current coefficient corresponding to the colour sum of element, and OLED bottoms electricity；The one monochromatic current coefficient is shown with the OLED The colour for shielding the sub-pixel in the pixel included is corresponding；And
Current detecting unit 32, be connected with the parameter acquiring unit 31, for according to the multiple monochromatic current coefficient, It is the colour of sub-pixel in the pixel that the hybrid current coefficient, the OLED bottoms be electric, the OLED display screen includes, described The brightness of OLED display screen obtains the electric current that the OLED display screen expends；
The parameter acquiring unit is specifically used for obtaining to be consumed when showing a frame black test picture in the OLED display screen The electric current taken is OLED bottoms electricity.
The power-comuption detecting device of OLED display screen described in the embodiment of the present invention, by being shown in the OLED display screen Monochromatic test pictures and simultaneously detect the OLED display screen consuming electric current, with reference to OLED pixel color, OLED display screen it is bright Degree, OLED bottoms electricity, so as to obtain the electric current that the OLED display screen expends, it can accurately detect to obtain the OLED display screen consumption The electric current taken.
Specifically, the pixel in the OLED display screen includes red sub-pixel, green sub-pixels and blue subpixels；
As shown in figure 4, the parameter acquiring unit 31 includes setting module 311, display control module 312, detection module 313 and parameter acquisition module 314, wherein,
The setting module 311, is connected with OLED display screen 30, and list is shown for being set in the OLED display screen 30 During color test pictures, the colour of the sub-pixel for all same colors that the OLED display screen 30 includes is all identical, is additionally operable to Set OLED display screen testing current formula；
The OLED display screen testing current formula is as follows：
Power_oled=Screen_Size × (Rcorf × R2+Gcorf×G2+Bcorf×B2-MIXcorf×(R+G+ B)2)×BrightnessLevel+OLED_self；
Wherein, Power_oled is the electric current that OLED display screen expends, and Screen_Size is that the OLED display screen includes Pixel number, Rcorf is red current coefficient, and Gcorf is green current coefficient, and Bcorf is blue current coefficient, MIXcorf is hybrid current coefficient, and OLED_self is OLED bottoms electricity, and R is the red sub-pixel that the OLED display screen includes Colour, G are the colour for the green sub-pixels that the OLED display screen includes, and B is the blue sub- picture that the OLED display screen includes The colour of element, BrightnessLevel are the brightness of the OLED display screen；
The display control module 312, it is connected with the OLED display screen 30, for controlling in the OLED display screen 30 One frame white test pictures of upper display, a frame red test picture, a frame green test pictures and a frame blueness test pictures；
The detection module 313, with (being shown for the display device 33 provided with the OLED display screen 30 not shown in Fig. 4 Position relationship between device 33 and OLED display screen 30) power supply electric supply installation 34 connect, for detect correspond to each frame The electric current that the OLED display screen 30 of monochromatic test pictures expends；
The parameter acquisition module 314, it is connected with the detection module 313, for the detection module 313 to be detected Electric current substitute into the OLED display screen testing current formula, to obtain red current coefficient Rcorf, green current coefficient Gcorf, blue current coefficient B corf and hybrid current coefficient MIXcorf；
In practical operation, include in detection display device 33 (display device for example can be mobile phone or computer) It is not to be powered by battery or external power supply to display device, but pass through one during the electric current that OLED display screen 30 expends The special electric supply installation 34 that can detect output current in real time is powered to the display device 33, and the detection module 313 detects The mode for the electric current that the OLED display screen 30 expends when showing a frame monochrome test pictures is as follows：First detection connects screen electric current again Screen electric current is pulled out in detection, and the screen electric current and the difference for pulling out screen electric current of connecing is electric current that the OLED display screen expends.
According to a kind of embodiment, the setting module, specifically for setting described in the OLED display screen shows During white test pictures, the colour of all sub-pixels in the OLED display screen is all 255, sets the OLED display screen and shows When showing the red test picture, the colour of all red sub-pixels in the OLED display screen is all 255, and the OLED shows The colour of all blue subpixels in the colour and the OLED display screen of all green sub-pixels in display screen is all 0, if When the fixed OLED display screen shows the green test pictures, the colour of all green sub-pixels in the OLED display screen All it is 255, all blueness in the colour and the OLED display screen of all red sub-pixels in the OLED display screen The colour of pixel is all 0, when setting the OLED display screen and showing the blue test pictures, the institute in the OLED display screen The colour for having blue subpixels is all 255, and the colour of all red sub-pixels in the OLED display screen and the OLED show The colour of all green sub-pixels in display screen is all 0, and presets full brightness BrightnessLevel_Max and bottom brightness BrightnessLevel_Min, the bottom brightness BrightnessLevel_Min are not equal to 0；
The display control module, specifically for being full brightness in the brightness of the OLED display screen During BrightnessLevel_Max and bottom brightness BrightnessLevel_Min, one frame white test pictures of display, a frame are red Color test pictures, a frame green test pictures and a frame blueness test pictures；
The detection module, specifically for being full brightness BrightnessLevel_ when the brightness of the OLED display screen When the brightness of Max and the OLED display screen is bottom brightness BrightnessLevel_Min, the OLED display screen is detected respectively White test pictures described in one frame of upper display, red test picture described in a frame, green test pictures and frame institute described in a frame State the electric current that the OLED display screen expends during blue test pictures；
The parameter acquisition module, correspond to the monochromatic test of each frame specifically for detect to obtain by the detection module The electric current that the OLED display screen of picture expends substitutes into the OLED display screen testing current formula, to obtain red current coefficient Rcorf, green current coefficient Gcorf, blue current coefficient B corf and hybrid current coefficient MIXcorf.
According to a kind of embodiment, the current detecting unit, specifically for being shown when in the OLED display screen During one frame picture, in the colour of each sub-pixel included according to the pixel in the OLED display screen, the OLED display screen The brightness of sub-pixel that includes of pixel and pixel current calculation formula obtain the electric current Power_pixel of pixel consuming；
The pixel current calculation formula is as follows：Power_pixel=(Rcorf × R2+Gcorf×G2+Bcorf×B2- MIXcorf×(R+G+B)2)×BrightnessLevel；
The electric current sum that all pixels in the OLED display screen expend is the electric current that the OLED display screen expends.
Specifically, as shown in figure 5, the current detecting unit 32 includes：
Sampling module 321, it is connected with the OLED display screen 30, for grabbing the frame period every predetermined, samples the OLED The previous frame image of display screen 30, and the colour of each sub-pixel that includes of the pixel for obtaining the predetermined number on the two field picture and institute State the brightness of OLED display screen 30；And
OLED display screen expends current detection module 322, is connected with the sampling module 321, specifically for according to pixel Current calculation formula draws the total current that the pixel of the predetermined number expends, and the total current divided by the predetermined number are averaged Pixel current；The electric current that the OLED display screen expends is multiplied by the picture that the OLED display screen includes for the mean pixel electric current The number Screen_size of element；
The pixel current calculation formula is as follows：Power_pixel=(Rcorf × R2+Gcorf×G2+Bcorf×B2- MIXcorf×(R+G+B)2)×BrightnessLevel；
Power_pixel is the electric current that single pixel expends.
Preferably, the sampling module, it is additionally operable to when a triggered event is detected, one two field picture of acquisition, described in sampling The brightness of the colour and the OLED display screen of each sub-pixel that the pixel of predetermined number in OLED display screen includes.
Preferably, the trigger event includes the brightness change and/or display interface switching of display screen.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (14)

  1. A kind of 1. power consumption detection method of OLED display screen, it is characterised in that including：
    Parameters acquiring procedure：Expended by showing monochromatic test pictures in OLED display screen and detecting the OLED display screen simultaneously Electric current, obtain multiple monochromatic current coefficients, each sub-pixel in the pixel included with the OLED display screen colour it With corresponding hybrid current coefficient, and OLED bottoms electricity；The picture that the one monochromatic current coefficient includes with the OLED display screen The colour of a sub-pixel in element is corresponding；
    Current detection step：It is electric, described according to the multiple monochromatic current coefficient, the hybrid current coefficient, the OLED bottoms The brightness of the colour of sub-pixel in the pixel that OLED display screen includes, the OLED display screen obtains the OLED display screen consumption The electric current taken；
    The parameters acquiring procedure includes：Obtain the electric current for showing in the OLED display screen and being expended during a frame black test picture For OLED bottoms electricity.
  2. 2. the power consumption detection method of OLED display screen as claimed in claim 1, it is characterised in that in the OLED display screen Pixel includes red sub-pixel, green sub-pixels and blue subpixels；
    The parameters acquiring procedure includes：
    It is set in when showing monochromatic test pictures in the OLED display screen, all identical face that the OLED display screen includes The colour of the sub-pixel of color is all identical；
    It is as follows to set OLED display screen testing current formula：
    Power_oled=Screen_Size × (Rcorf × R2+Gcorf×G2+Bcorf×B2-MIXcorf×(R+G+B)2) ×BrightnessLevel+OLED_self；
    Wherein, Power_oled is the electric current that OLED display screen expends, and Screen_Size is the picture that the OLED display screen includes The number of element, Rcorf are red current coefficient, and Gcorf is green current coefficient, and Bcorf is blue current coefficient, MIXcorf For hybrid current coefficient, OLED_self is electric for OLED bottoms, the colour for the red sub-pixel that R includes for the OLED display screen, G The colour of the green sub-pixels included for the OLED display screen, B are the color for the blue subpixels that the OLED display screen includes Value, BrightnessLevel are the brightness of the OLED display screen；
    A frame white test pictures, a frame red test picture, a frame green test pictures are shown in the OLED display screen With a frame blueness test pictures, and by detect obtain corresponding to each frame monochrome test pictures OLED display screen expend electric current The OLED display screen testing current formula is substituted into, to obtain red current coefficient Rcorf, green current coefficient Gcorf, blueness Current coefficient Bcorf and hybrid current coefficient MIXcorf.
  3. 3. the power consumption detection method of OLED display screen as claimed in claim 2, it is characterised in that described to be shown in the OLED Screen display white test pictures, red test picture, green test pictures and blue test pictures, and detection is obtained correspondingly The OLED display screen testing current formula is substituted into the electric current that the OLED display screen of each monochromatic test pictures expends, to obtain Red current coefficient Rcorf, green current coefficient Gcorf, blue current coefficient B corf and hybrid current coefficient MIXcorf steps Suddenly include：
    When setting the OLED display screen and showing the white test pictures, the color of all sub-pixels in the OLED display screen Value is all 255；
    When setting the OLED display screen and showing the red test picture, all red sub-pixels in the OLED display screen Colour be all 255, it is all in the colour and the OLED display screen of all green sub-pixels in the OLED display screen The colour of blue subpixels is all 0；
    When setting the OLED display screen and showing the green test pictures, all green sub-pixels in the OLED display screen Colour be all 255, it is all in the colour and the OLED display screen of all red sub-pixels in the OLED display screen The colour of blue subpixels is all 0；
    When setting the OLED display screen and showing the blue test pictures, all blue subpixels in the OLED display screen Colour be all 255, it is all in the colour and the OLED display screen of all red sub-pixels in the OLED display screen The colour of green sub-pixels is all 0；
    Full brightness and bottom brightness are preset, the bottom brightness is not equal to 0；
    When it is bottom brightness that the brightness of the OLED display screen, which is full brightness and the brightness of the OLED display screen, institute is detected respectively State and white test pictures described in a frame, red test picture described in a frame, green test described in a frame are shown in OLED display screen The electric current that the OLED display screen expends during blue test pictures described in picture and a frame, and it is each to detect corresponding to of obtaining The electric current that the OLED display screen of frame monochrome test pictures expends substitutes into the OLED display screen testing current formula, to obtain red Current coefficient Rcorf, green current coefficient Gcorf, blue current coefficient B corf and hybrid current coefficient MIXcorf.
  4. 4. the power consumption detection method of OLED display screen as claimed in claim 2 or claim 3, it is characterised in that the current detecting step Suddenly include：
    When showing a frame picture in the OLED display screen, each height picture for being included according to the pixel in the OLED display screen The brightness for the sub-pixel that the colour of element, the pixel in the OLED display screen include and pixel current calculation formula obtain the pixel The electric current Power_pixel of consuming；
    The pixel current calculation formula is as follows：Power_pixel=(Rcorf × R2+Gcorf×G2+Bcorf×B2— MIXcorf×(R+G+B)2)×BrightnessLevel；
    The electric current sum that all pixels in the OLED display screen expend is the electric current that the OLED display screen expends.
  5. 5. the power consumption detection method of OLED display screen as claimed in claim 2 or claim 3, it is characterised in that the current detecting step Suddenly include：
    Sampling step：The frame period is grabbed every predetermined, samples the OLED display screen previous frame image, and obtain on the two field picture The brightness of the colour and the OLED display screen of each sub-pixel that the pixel of predetermined number includes；
    OLED display screen expends current detection step：Draw what the pixel of the predetermined number expended according to pixel current calculation formula Total current, the total current divided by the predetermined number are obtained into mean pixel electric current；The electric current that the OLED display screen expends is institute State the number Screen_size that mean pixel electric current is multiplied by the pixel that the OLED display screen includes；
    The pixel current calculation formula is as follows：Power_pixel=(Rcorf × R2+Gcorf×G2+Bcorf×B2- MIXcorf×(R+G+B)2)×BrightnessLevel；
    Power_pixel is the electric current that single pixel expends.
  6. 6. the power consumption detection method of OLED display screen as claimed in claim 5, it is characterised in that the sampling step is also wrapped Include：When a triggered event is detected, a two field picture is obtained, samples what the pixel of the predetermined number in the OLED display screen included The brightness of the colour of each sub-pixel and the OLED display screen.
  7. 7. the power consumption detection method of OLED display screen as claimed in claim 6, it is characterised in that the trigger event includes aobvious The brightness change of display screen and/or display interface switching.
  8. A kind of 8. power-comuption detecting device of OLED display screen, it is characterised in that including：
    Parameter acquiring unit, for by showing monochromatic test pictures in OLED display screen and detecting the OLED display screen simultaneously The color of each sub-pixel in the pixel that the electric current of consuming, the multiple monochromatic current coefficients of acquisition and the OLED display screen include It is worth hybrid current coefficient corresponding to sum, and OLED bottoms electricity；The one monochromatic current coefficient includes with the OLED display screen Pixel in a sub-pixel colour it is corresponding；And
    Current detecting unit, for according to the multiple monochromatic current coefficient, the hybrid current coefficient, the OLED bottoms electricity, The brightness of the colour of sub-pixel in the pixel that the OLED display screen includes, the OLED display screen obtains the OLED and shown Shield the electric current expended；
    The parameter acquiring unit is specifically used for obtaining what is expended when showing a frame black test picture in the OLED display screen Electric current is OLED bottoms electricity.
  9. 9. the power-comuption detecting device of OLED display screen as claimed in claim 8, it is characterised in that in the OLED display screen Pixel includes red sub-pixel, green sub-pixels and blue subpixels；
    The parameter acquiring unit includes setting module, display control module, detection module and parameter acquisition module, wherein,
    The setting module, when showing monochromatic test pictures in the OLED display screen for being set in, the OLED display screen Including all same colors sub-pixel colour it is all identical, be additionally operable to set OLED display screen testing current formula；
    The OLED display screen testing current formula is as follows：
    Power_oled=Screen_Size × (Rcorf × R2+Gcorf×G2+Bcorf×B2-MIXcorf×(R+G+B)2) ×BrightnessLevel+OLED_self；
    Wherein, Power_oled is the electric current that OLED display screen expends, and Screen_Size is the picture that the OLED display screen includes The number of element, Rcorf are red current coefficient, and Gcorf is green current coefficient, and Bcorf is blue current coefficient, MIXcorf For hybrid current coefficient, OLED_self is electric for OLED bottoms, the colour for the red sub-pixel that R includes for the OLED display screen, G The colour of the green sub-pixels included for the OLED display screen, B are the color for the blue subpixels that the OLED display screen includes Value, BrightnessLevel are the brightness of the OLED display screen；
    The display control module, show that a frame white test pictures, a frame are red in the OLED display screen for controlling Test pictures, a frame green test pictures and a frame blueness test pictures；
    The detection module, the electric current that the OLED display screen for detecting corresponding to each frame monochrome test pictures expends；
    The parameter acquisition module, the electric current for the detection module to be detected substitute into the OLED display screen testing current Formula, to obtain red current coefficient Rcorf, green current coefficient Gcorf, blue current coefficient B corf and hybrid current system Number MIXcorf.
  10. 10. the power-comuption detecting device of OLED display screen as claimed in claim 9, it is characterised in that
    The setting module, when showing the white test pictures specifically for setting the OLED display screen, the OLED shows The colour of all sub-pixels in display screen is all 255, described when setting the OLED display screen and showing the red test picture The colour of all red sub-pixels in OLED display screen is all 255, all green sub-pixels in the OLED display screen The colour of all blue subpixels in colour and the OLED display screen is all 0, is set described in the OLED display screen shows During green test pictures, the colour of all green sub-pixels in the OLED display screen is all 255, in the OLED display screen All red sub-pixels colour and the OLED display screen on the colours of all blue subpixels be all 0, described in setting When OLED display screen shows the blue test pictures, the colour of all blue subpixels in the OLED display screen is all 255, all green sub-pixels in the colour and the OLED display screen of all red sub-pixels in the OLED display screen Colour be all 0, and preset full brightness and bottom brightness, the bottom brightness is not equal to 0；
    The display control module, specifically for when the brightness of the OLED display screen is full brightness and bottom brightness, showing one Frame white test pictures, a frame red test picture, a frame green test pictures and a frame blueness test pictures；
    The detection module, specifically for being full brightness and the brightness of the OLED display screen when the brightness of the OLED display screen For bottom brightness when, detect white test pictures described in a frame, red test described in a frame are shown in the OLED display screen respectively The electric current that the OLED display screen expends during blue test pictures described in green test pictures described in picture, a frame and a frame；
    The parameter acquisition module, correspond to each frame monochrome test pictures specifically for detect to obtain by the detection module The electric current that expends of OLED display screen substitute into the OLED display screen testing current formula, with obtain red current coefficient Rcorf, Green current coefficient Gcorf, blue current coefficient B corf and hybrid current coefficient MIXcorf.
  11. 11. the power-comuption detecting device of the OLED display screen as described in claim 9 or 10, it is characterised in that the current detecting Unit, specifically for when showing a frame picture in the OLED display screen, being included according to the pixel in the OLED display screen The colour of each sub-pixel, the brightness of sub-pixel that includes of the pixel in the OLED display screen and pixel current calculation formula Obtain the electric current Power_pixel of pixel consuming；
    The pixel current calculation formula is as follows：
    Power_pixel=(Rcorf × R2+Gcorf×G2+Bcorf×B2-MIXcorf×(R+G+B)2)× BrightnessLevel；
    The electric current sum that all pixels in the OLED display screen expend is the electric current that the OLED display screen expends.
  12. 12. the power-comuption detecting device of the OLED display screen as described in claim 9 or 10, it is characterised in that the current detecting Unit includes：
    Sampling module, for grabbing the frame period every predetermined, the OLED display screen previous frame image is sampled, and obtain the two field picture On predetermined number the brightness of the colour and the OLED display screen of each sub-pixel that includes of pixel；And
    OLED display screen expends current detection module, the picture specifically for drawing the predetermined number according to pixel current calculation formula The total current that element expends, mean pixel electric current is obtained by the total current divided by the predetermined number；What the OLED display screen expended Electric current is the number Screen_size that the mean pixel electric current is multiplied by the pixel that the OLED display screen includes；
    The pixel current calculation formula is as follows：
    Power_pixel=(Rcorf × R2+Gcorf×G2+Bcorf×B2-MIXcorf×(R+G+B)2)× BrightnessLevel；
    Power_pixel is the electric current that single pixel expends.
  13. 13. the power-comuption detecting device of OLED display screen as claimed in claim 12, it is characterised in that the sampling module, also For when a triggered event is detected, obtaining a two field picture, sampling the pixel of the predetermined number in the OLED display screen includes Each sub-pixel colour and the OLED display screen brightness.
  14. 14. the power-comuption detecting device of OLED display screen as claimed in claim 13, it is characterised in that the trigger event includes The brightness change of display screen and/or display interface switching.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3916708A4 (en) * 2019-01-24 2022-10-19 Boe Technology Group Co., Ltd. Display current determination and compensation method and device, and display device and storage medium

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105551412B (en) * 2016-02-24 2018-03-30 京东方科技集团股份有限公司 The detection means and method of a kind of brightness
CN109493796B (en) * 2017-09-12 2021-04-09 上海和辉光电股份有限公司 Display device and screen power consumption control method thereof
CN109754755B (en) * 2017-11-07 2021-04-16 上海和辉光电股份有限公司 Power supply method and device for display panel and display equipment
CN107909968B (en) * 2017-12-28 2019-07-23 武汉华星光电半导体显示技术有限公司 The driving method and Related product of AMOLED display panel
CN109872668B (en) * 2019-04-12 2022-08-09 京东方科技集团股份有限公司 Image display total current prediction method, display device and storage medium
CN112433594A (en) * 2020-12-02 2021-03-02 Oppo广东移动通信有限公司 Power consumption detection method and device, storage medium and electronic equipment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2859732Y (en) * 2006-01-19 2007-01-17 汕头超声显示器有限公司 LCD module testing instrument
US8125163B2 (en) * 2008-05-21 2012-02-28 Manufacturing Resources International, Inc. Backlight adjustment system
CN102903337B (en) * 2012-09-21 2014-09-10 京东方科技集团股份有限公司 Liquid crystal display as well as control method and device thereof
CN103489405B (en) * 2013-09-30 2015-09-16 京东方科技集团股份有限公司 A kind of display compensation method, device and display bucking-out system
CN104036708B (en) * 2014-06-04 2015-05-27 精电(河源)显示技术有限公司 Multifunctional liquid crystal display testing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3916708A4 (en) * 2019-01-24 2022-10-19 Boe Technology Group Co., Ltd. Display current determination and compensation method and device, and display device and storage medium

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