CN109147672A - A kind of compensating control method and display panel, display device of display panel - Google Patents
A kind of compensating control method and display panel, display device of display panel Download PDFInfo
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- CN109147672A CN109147672A CN201810986822.XA CN201810986822A CN109147672A CN 109147672 A CN109147672 A CN 109147672A CN 201810986822 A CN201810986822 A CN 201810986822A CN 109147672 A CN109147672 A CN 109147672A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The embodiment of the invention provides a kind of compensating control method of display panel and display panels, display device, it is related to field of display technology, the higher real-time compensation of accuracy is carried out to display pixel, brightness decay caused by reducing because of display pixel aging improves the display performance of display panel.Compensating control method includes: to obtain virtual pixel corresponding first driving current signal under the effect of the first data-signal；Obtain display pixel corresponding second driving current signal under the effect of the first data-signal；According to the first driving current signal and the second driving current signal, data difference signal is obtained；According to data difference signal and pre-stored luminance-voltage mapping relations, the corresponding compensation data signal of the first data-signal is obtained；Display pixel is compensated according to compensation data signal.The above method is for compensating display pixel.
Description
[technical field]
The present invention relates to the compensating control method and display panel of field of display technology more particularly to a kind of display panel,
Display device.
[background technique]
For liquid crystal display panel, Organic Light Emitting Diode (Organic Light-Emitting Diode, letter
Claiming OLED) display panel in brightness, coloration and power consumption has more advantage, it is widely applied.But as user makes
With the passage of time, OLED display panel will appear degradation phenomena, influence display performance.
In the prior art, it generallys use real time monitoring compensation and two kinds of compensation ways of predictive compensation mends pixel
It repays, to guarantee that OLED display panel maintains normal brightness.But it for the mode of real time monitoring compensation, needs each
Increase current monitoring circuit in the pixel circuit of pixel, this kind of mode not only increases the size of pixel, can also be in non-display area
A plurality of signal wire is added, border width is caused to increase.For the mode of predictive compensation, although this kind of mode is without changing picture
Plain circuit, but it is only fitted by single aging, can not accurately be estimated user and be actually used scene, be easy to cause the benefit of mistake
Effect is repaid, the accuracy of compensation is not high.
[summary of the invention]
In view of this, the embodiment of the invention provides a kind of compensating control method of display panel and display panels, display
Device, to carry out the higher real-time compensation of accuracy to display pixel, brightness decay caused by reducing because of display pixel aging,
Improve the display performance of display panel.
On the one hand, the embodiment of the invention provides a kind of compensating control method of display panel, the compensating control methods
Include:
Obtain virtual pixel corresponding first driving current signal under the effect of the first data-signal；
Obtain display pixel corresponding second driving current signal under first data-signal effect；
According to first driving current signal and second driving current signal, data difference signal is obtained；
According to the data difference signal and pre-stored luminance-voltage mapping relations, the first data letter is obtained
Number corresponding compensation data signal；
The display pixel is compensated according to the compensation data signal.
On the other hand, the embodiment of the invention provides a kind of display panel, the display panel includes:
Display pixel；
Virtual pixel；
Mode selecting unit, the mode selecting unit is in display mode, controlling the display pixel and carrying out picture
Face shows that the virtual pixel does not shine；In the compensation mode, the display pixel and the virtual pixel are controlled respectively in institute
It is lower luminous to state the effect of the first data-signal；
Current signal acquiring unit, the current signal acquiring unit are used under the compensation model, obtain virtual representation
Element corresponding first driving current signal and acquisition display pixel under the effect of the first data-signal are believed in first data
Number effect under corresponding second driving current signal；
The difference signal acquiring unit being electrically connected with the current signal acquiring unit, the difference signal acquiring unit are used
According to first driving current signal and second driving current signal, data difference signal is obtained；
The compensating unit being electrically connected with the difference signal acquiring unit, the compensating unit are used for according to the data difference
Value signal and pre-stored luminance-voltage mapping relations obtain the corresponding compensation data signal of first data-signal, and
The display pixel is compensated according to the compensation data signal.
In another aspect, the display device includes above-mentioned display panel the embodiment of the invention provides a kind of display device.
A technical solution in above-mentioned technical proposal has the following beneficial effects:
In the technical solution provided by the embodiment of the present invention, by obtaining virtual pixel under the effect of the first data-signal
Corresponding first driving current signal, that is, driving current signal corresponding to theoretical light emission luminance is obtained, pass through acquisition
Display pixel corresponding second driving current signal under the effect of the first data-signal, that is, obtain practical light emission luminance institute
Corresponding driving current signal, and then by the first driving current signal and the second driving current signal, obtain data difference letter
Number.Due to being in non-linear relation between the light emission luminance and data voltage of pixel, in embodiments of the present invention, obtaining
After data difference signal, directly the data-signal of display pixel is not adjusted according to the data difference signal, but
Using brightness as standard of compensation, compensation data signal is reacquired according to luminance-voltage mapping relations, makes display pixel in data
The corresponding theoretical light emission luminance of the first data-signal is shown under the action of thermal compensation signal.
As it can be seen that under the premise of not influencing display pixel, need to only be led to using technical solution provided by the embodiment of the present invention
It crosses and adds virtual pixel, and then according to the first driving current signal, the second driving current signal and pre-stored brightness-
Voltage mapping relations can accurately know the corresponding compensation data signal of the first data-signal, guarantee that display pixel is mended in data
It repays and shows the corresponding theoretical light emission luminance of the first data-signal under the action of signal.Compared with prior art, the technical solution energy
Enough realize carries out the higher real-time compensation of accuracy to display pixel, and brightness decay caused by reducing because of display pixel aging mentions
The display performance of high display panel, and the specific structure of the pixel circuit without changing display pixel, without in non-display area
Connection cabling is inside added, there is higher exploitativeness.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the flow chart of compensating control method provided by the embodiment of the present invention；
Fig. 2 is the schematic diagram of luminance-voltage mapping relations provided by the embodiment of the present invention；
Fig. 3 is another flow chart of compensating control method provided by the embodiment of the present invention；
Fig. 4 is another flow chart of compensating control method provided by the embodiment of the present invention；
Fig. 5 is another flow chart of compensating control method provided by the embodiment of the present invention；
Fig. 6 is the flow chart of difference map method provided by the embodiment of the present invention；
Fig. 7 is the schematic diagram of current-voltage mapping relations provided by the embodiment of the present invention；
Fig. 8 is the flow chart of ratio reflection method provided by the embodiment of the present invention；
Fig. 9 is another flow chart of compensating control method provided by the embodiment of the present invention；
Figure 10 is the structural schematic diagram of display panel provided by the embodiment of the present invention；
Figure 11 is another structural schematic diagram of display panel provided by the embodiment of the present invention；
Figure 12 is the structural schematic diagram of display device provided by the embodiment of the present invention.
[specific embodiment]
For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing
It states.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
It will be appreciated that though driving current signal may be described using term first, second in embodiments of the present invention,
But these driving current signals should not necessarily be limited by these terms.These terms are only used to for driving current signal being distinguished from each other out.Example
Such as, in the case where not departing from range of embodiment of the invention, the first driving current signal can also be referred to as the second driving current
Signal, similarly, the second driving current signal can also be referred to as the first driving current signal.
The embodiment of the invention provides a kind of compensating control methods of display panel, and as shown in FIG. 1, FIG. 1 is of the invention real
The flow chart of compensating control method provided by example is applied, which includes:
Step S1: virtual pixel corresponding first driving current signal under the effect of the first data-signal is obtained.
Step S2: display pixel corresponding second driving current signal under the effect of the first data-signal is obtained.
Step S3: according to the first driving current signal and the second driving current signal, data difference signal is obtained.
Step S4: according to data difference signal and pre-stored luminance-voltage mapping relations, the first data-signal is obtained
Corresponding compensation data signal.
Step S5: display pixel is compensated according to compensation data signal.
It should be noted that display pixel refers to the pixel in display panel for normally showing, virtual pixel refers to not
For carrying out the pixel that picture is shown, when display panel carries out picture display, virtual pixel does not shine, therefore, virtual pixel
Using the passage of time aging phenomenon will not occur with display panel.
It is assumed that the corresponding theoretical light emission luminance of the first data-signal is L, as display panel uses the passage of time, when to
When display pixel provides the first data-signal, since display pixel is there are aging, reality shown by display pixel shines
Brightness L ' will be lower than the corresponding theoretical light emission luminance L of the first data-signal, at this point, can issue required reason to display pixel
By light emission luminance L, it is necessary to be compensated to display pixel.
Specifically, in the compensating control method provided by the embodiment of the present invention, by obtaining virtual pixel in the first number
According to the first driving current signal corresponding under signal function, that is, obtain driving current corresponding to theoretical light emission luminance L
Signal that is, is obtained by obtaining display pixel corresponding second driving current signal under the effect of the first data-signal
Practical light emission luminance L ' corresponding driving current signal, and then believed by the first driving current signal and the second driving current
Number, obtain data difference signal.As shown in Fig. 2, Fig. 2 is showing for luminance-voltage mapping relations provided by the embodiment of the present invention
It is intended to, can be seen that according to curve in figure in non-linear relation between the light emission luminance of pixel and data voltage, therefore, at this
In inventive embodiments, after obtaining data difference signal, not directly according to the data difference signal to the number of display pixel
It is believed that number be adjusted, but using brightness as standard of compensation, compensation data letter is reacquired according to luminance-voltage mapping relations
Number, so that display pixel is shown the first data-signal corresponding theoretical light emission luminance under the action of compensation data signal.
As it can be seen that using compensating control method provided by the embodiment of the present invention, under the premise of not influencing display pixel, only
It need to be by adding virtual pixel, and then according to the first driving current signal, the second driving current signal and pre-stored bright
Degree-voltage mapping relations can accurately know the corresponding compensation data signal of the first data-signal, guarantee display pixel in data
The corresponding theoretical light emission luminance of the first data-signal is shown under the action of thermal compensation signal.Compared with prior art, which controls
Method, which can be realized, carries out the higher real-time compensation of accuracy to display pixel, and brightness declines caused by reducing because of display pixel aging
Subtract, the display performance of display panel, and the specific structure of the pixel circuit without changing display pixel is improved, without non-aobvious
Connection cabling is added in area and is shown, and there is higher exploitativeness.
It should be noted that display panel further includes scan drive cell, scan drive cell is used for line by line to display surface
Pixel in plate provides scanning drive signal.Display panel receives scanning drive signal in display mode, in display pixel
When, by making its normal luminous, receiving scanning in virtual pixel to display pixel offer and its corresponding data-signal
When driving signal, by providing black state data-signal to virtual pixel, it is set not shine, wherein black state data-signal refers to black
Data-signal corresponding to state picture.Display panel in the compensation mode, when needing to obtain the first driving current signal, is being shown
When showing that pixel receives scanning drive signal, black state data-signal is provided to display pixel, scanning is received in virtual pixel and drives
When dynamic signal, the first data-signal is provided to virtual pixel；When needing to obtain the second driving current, received in display pixel
When scanning drive signal, the first data-signal is provided to display pixel, when virtual pixel receives scanning drive signal, to void
Quasi- pixel provides black state data-signal.
It certainly, can be in each output end and the corresponding row of scan drive cell in other of the invention optional embodiments
Between display pixel or virtual pixel setting conducting switch, by control conducting switch on or off, make display pixel or
Virtual pixel receives scanning drive signal when luminous, can not receive scanning drive signal when not shining；Alternatively, working as certain
It, can also be by providing it the electricity opposite with significant level in scanning drive signal when row display pixel or virtual pixel do not shine
Ordinary mail number, the pixel circuit controlled in the display pixel or virtual pixel of the row do not work.
Optionally, the quantity of virtual pixel can be one in display panel, or multiple.
When the quantity of virtual pixel is one, the virtual pixel corresponding driving current under the effect of the first data-signal
Signal is the first driving current signal.
When the quantity of virtual pixel is multiple, and multiple virtual pixels are arranged along line direction, as shown in figure 3, Fig. 3 is this
Another flow chart of compensating control method provided by inventive embodiments, step S1 are specific can include:
Step S11: first total driving current I of multiple virtual pixels under the effect of the first data-signal is obtained1。
Specifically, when scan drive cell exports scanning drive signal to the row virtual pixel, respectively to multiple virtual
Pixel provides the first data-signal, obtains driving current signal of each virtual pixel under the effect of the first data-signal respectively,
It is added again first total driving current I is calculated1。
Step S12: according to I_du=I1/ K calculates the corresponding first driving current signal I_du of virtual pixel, wherein K
For the number of virtual pixel.
Compared with a virtual pixel is only set in display panel, multiple virtual pixels are set, it can be to avoid because single empty
Quasi- pixel damage leads to not the problem of compensating to display pixel, also, the first drive is calculated by way of being averaged
Streaming current signal, can be improved the accuracy of the first acquired driving current, and then guarantee subsequent to display pixel compensation
Accuracy.
Optionally, when display pixel includes that the first color display pixel, the second color display pixel and third color are shown
When pixel, due to light emission luminance different from of display pixel under the action of equalized data signal of different colours, when
When providing the first data-signal respectively to the first color display pixel, the second color display pixel and third color display pixel,
The display pixel of three kinds of colors can correspond to different driving current signals.Based on this, virtual pixel can also include that the first color is empty
Quasi- pixel, the second color virtual pixel and third color virtual pixel, and the virtual pixel by calculating different colours is corresponding
First driving current signal, and corresponding second driving current signal of display pixel of different colours is calculated, to different colours
Display pixel carry out separate compensation, to make the display pixel of different colours that can show the theoretical light emission luminance needed for it,
Further increase the accuracy of compensation.
At this point, step S11 is specific can include: obtain the first color virtual pixel, the second color virtual pixel and respectively
First total driving current I of the three color virtual pixels under the effect of the first data-signal11~I13.Step S12 is specific can include:
According to I_dui=I1i/Ki, i=1~3 calculate separately the first color virtual pixel, the second color virtual pixel and third color
The corresponding first driving current signal I_du of virtual pixel1~I_du3。
Illustratively, the first color is red, and the second color is green, and third color is blue.
Optionally, when display pixel is in x row y column arrangement, as shown in figure 4, Fig. 4 is to mend provided by the embodiment of the present invention
Another flow chart of control method is repaid, step S2 is specific can include:
Step S21: second total driving current I of each column display pixel under the effect of the first data-signal is obtained respectively21~
I2y。
Specifically, when scan drive cell exports scanning drive signal to the i-th row display pixel, respectively to the more of the row
A display pixel provides the first data-signal, obtains driving electricity of each display pixel of the row under the effect of the first data-signal
Stream.After the completion of the display pixel scanning to x row, by 1 row in each column display pixel~corresponding driving of xth row display pixel
Electric current is added, second total driving current I of each column display pixel under the effect of the first data-signal is calculated21~I2y。
Step S22: according to I_avm=I2m/ x, m=1~y calculate separately the corresponding second driving electricity of each column display pixel
Flow signal I_av1~I_avy。
At this point, step S5 is specific can include: according to the corresponding compensation data signal of each column display pixel, show picture to each column
Element carries out separate compensation.
Using this kind of compensation way, whole display pixels in a column display pixel can be carried out while be compensated, thus
The compensation time is shortened, compensation efficiency is improved.
Optionally, when the quantity of display pixel is W, step S2 is specific can include: obtains each display pixel respectively
The second driving current I under the effect of the first data-signal21'~I2w′.At this point, step S5 is specific can include: according to each aobvious
Show the corresponding compensation data signal of pixel, separate compensation is carried out to each display pixel.
Using this kind of compensation way, by carrying out separate compensation to each display pixel, it is ensured that each display picture
The accuracy of element compensation, makes whole display pixels that can show it under the action of with its corresponding compensation data signal
Required theoretical light emission luminance, to further improve the display performance of display panel.
Optionally, as shown in figure 5, Fig. 5 is another flow chart of compensating control method provided by the embodiment of the present invention,
Step S3 is specific can include:
Step S31: according to the first driving current signal and the second driving current signal, deterioration factor is calculated.
Step S32: it according to calculated deterioration factor and pre-stored deterioration factor-voltage mapping relations, obtains bad
Change the corresponding data difference signal of coefficient.
In embodiments of the present invention, specifically deterioration system can be obtained by difference map method and ratio reflection method two ways
Number-voltage mapping relations.
As shown in fig. 6, Fig. 6 is the flow chart of difference map method provided by the embodiment of the present invention, pass through difference map method
Obtain deterioration factor-voltage mapping relations detailed process can include:
Step K1: the corresponding standard driving of each grayscale value in 0~255 grayscale is obtained under the unaged state of display panel
Current signal Inor, the corresponding practical driving current signal I of each grayscale value is obtained under display panel ageing stateact。
Step K2: as shown in fig. 7, Fig. 7 is the schematic diagram of current-voltage mapping relations provided by the embodiment of the present invention,
According to current-voltage mapping relations, the standard driving current signal I of each grayscale value is obtainednorCorresponding normal data signals
VnorAnd practical driving current signal IactCorresponding actual data signal Vact。
Step K3: according to △ Vdata=Vact-Vnor, calculate the corresponding data difference signal △ Vdata of each grayscale value.
Step K4: according to △ I=Inor-Iact, calculate the corresponding deterioration factor △ I of each grayscale value.
Step K5: according to each grayscale value corresponding △ I and △ Vdata, deterioration factor-voltage mapping relations are constructed.
At this point, step S31 is specific can include: according to △ I=I_du-I_av, calculate deterioration factor △ I, wherein I_du is
First driving current signal, I_av are the second driving current signal.
Using difference map method, by the corresponding standard driving current signal I of each grayscale valuenorWith practical driving electricity
Flow signal IactIt is tested, and then to the corresponding △ I of each grayscale valueiWith △ VdataiIt is individually calculated, it is ensured that each
The accuracy of the mapping relations of the corresponding △ I and △ Vdata of a grayscale value is reflected to improve constructed deterioration factor-voltage
The accuracy of relationship is penetrated, guarantees to carry out accurate compensation to display pixel.
As shown in figure 8, Fig. 8 is the flow chart of ratio reflection method provided by the embodiment of the present invention, pass through ratio reflection method
Obtain deterioration factor-voltage mapping relations detailed process can include:
Step H1: 0~255 grayscale is divided into multiple grayscale value groups, each grayscale value group includes endpoint grayscale value G1。
Step H2: the corresponding standard driving of each grayscale value in 0~255 grayscale is obtained under the unaged state of display panel
Current signal Inor, each endpoint grayscale value G is obtained under display panel ageing state1Corresponding practical driving current signal
Iact1。
Step H3: according to current-voltage mapping relations, the standard driving current signal I of each grayscale value is obtainednorInstitute is right
The normal data signals V answerednorAnd each endpoint grayscale value G1Practical driving current signal Iact1Corresponding real data
Signal Vact1。
Step H4: according to △ Vdata1=Vact1-Vnor, calculate each endpoint grayscale value G1Corresponding data difference signal △
Vdata1。
Step H5: according to △ I1=Inor/Iact1, calculate each endpoint grayscale value G1Corresponding deterioration factor △ I1。
Step H6: according to G11-G10/G2-G10=(△ I11-△I10)/(△I2-△I10), it calculates each in each grayscale value group
A intermediate grayscale value G2Corresponding deterioration factor △ I2, wherein G11And G10Respectively intermediate grayscale value G2Place grayscale value group
Two endpoint grayscale values, △ I11With △ I10Endpoint grayscale value G respectively11With endpoint grayscale value G10Corresponding deterioration factor；And according to
△I2=Inor/Iact2, calculate each intermediate grayscale value G2Corresponding practical driving current signal Iact2。
Step H7: each intermediate grayscale value G is obtained according to current-voltage mapping relations referring again to Fig. 72Reality
Driving current signal Iact2Corresponding actual data signal Vact2, and according to △ Vdata2=Vact2-Vnor, calculate each centre
Grayscale value G2Corresponding data difference signal △ Vdata2。
Step H8: according to △ I1、△I2、△Vdata1With △ Vdata2, construct deterioration factor-voltage mapping relations.
At this point, step S31 is specific can include: according to △ I=I_du/I_av, calculate deterioration factor △ I, wherein I_du is
First driving current signal, I_av are the second driving current signal.
It, can be only to endpoint grayscale value G in ratio reflection method1Corresponding practical driving current signal Iact1It is tested,
Each intermediate grayscale value G2Corresponding practical driving current signal Iact2It can be calculated and be known by subsequent analysis.Using this kind of mode,
The testing time to practical driving current signal can be reduced, deterioration factor-voltage mapping relations building duration is shortened, is improved
Construct efficiency.
It should be noted that no matter being closed using difference map method or ratio reflection method building deterioration factor-voltage mapping
System, when display pixel includes the first color display pixel, the second color display pixel and third color display pixel, due to not
With corresponding driving current signal different under the display pixel equalized data signal effect of color, therefore, to realize to not
With the accurate compensation of the display pixel of color, its corresponding deterioration factor-can be constructed to the display pixel of different colours
Voltage mapping relations, and the display pixel of different colours is accordingly compensated.
Specifically, current-voltage mapping relations include the first current-voltage mapping corresponding with the first color display pixel
Relationship and the corresponding second current-voltage mapping relations of the second color display pixel and corresponding with third color display pixel
Third current-voltage mapping relations.Corresponding, constructed deterioration factor-voltage mapping relations out include and the first face
The corresponding first deterioration factor-voltage mapping relations of color display pixel, the second deterioration corresponding with the second color display pixel system
Number-voltage mapping relations and third deterioration factor-voltage mapping relations corresponding with third color display pixel.
Optionally, as shown in figure 9, Fig. 9 is another flow chart of compensating control method provided by the embodiment of the present invention,
Step S4 is specific can include:
Step S41: Vdata1 pairs of the first data-signal is obtained according to luminance-voltage mapping relations referring again to Fig. 2
The first brightness value L 1 answered.
It should be noted that the luminance-voltage mapping relations refer to the luminance-voltage of corresponding standard when pixel is unaged
Mapping relations, the corresponding brightness value of each data-signal is the bright of the corresponding theoretical light emission luminance of the data-signal in mapping relations
Angle value.
Step S42: according to data difference signal △ Vdata and luminance-voltage mapping relations, Vdata1+ △ Vdata is obtained
The second corresponding brightness value L 2.
Step S43: according to △ L=L1-L2, luminance difference △ L is calculated.
Step S44: according to luminance-voltage mapping relations, corresponding data-signal when brightness value is L1+ △ L is obtained
Vdata, data-signal Vdata are the corresponding compensation data signal of the first data wire size.
When providing the first data-signal Vdata1 to display pixel, ideally, display pixel should issue brightness value
For the theoretical light emission luminance of L1.But due to display pixel aging, the practical light emission luminance of display pixel compares theoretical luminance
There is decaying in degree, that is, the brightness value L 2 of practical issued brightness is less than L1, and the difference of the two is △ L.At this point, to display
The practical light emission luminance that pixel issues is L1, then needing to provide to display pixel with brightness value is that data corresponding to L1+ △ L are believed
Number Vdata, so, even if display pixel there are the brightness decay of △ L, remains on after capable of guaranteeing display pixel decaying
The brightness value of practical light emission luminance is L1.
In the above-mentioned methods, and it is indirect display pixel is compensated by data difference signal △ Vdata, but with
Brightness is as standard of compensation, the relationship based on brightness and data voltage, reacquires compensation data signal.Using this kind of method,
It can guarantee that display pixel issues the first data-signal corresponding theoretical light emission luminance under the action of compensation data signal, avoid
The light emission luminance of compensated display pixel deviates.
When display panel includes the display pixel of different colours, to realize the accurate benefit to the display pixel of different colours
It repays, corresponding compensation data can be obtained according to the corresponding luminance-voltage mapping relations of display pixel institute of different colours
Signal.
Specifically, when display pixel includes that the first color display pixel, the second color display pixel and third color are shown
When pixel, luminance-voltage mapping relations include the first luminance-voltage mapping relations corresponding with the first color display pixel, with
The corresponding second luminance-voltage mapping relations of second color display pixel and third corresponding with third color display pixel are bright
Degree-voltage mapping relations.
The embodiment of the invention also provides a kind of display panels, and as shown in Figure 10, Figure 10 is provided by the embodiment of the present invention
Display panel structural schematic diagram, the display panel include display pixel 1, virtual pixel 2, mode selecting unit 3, electric current letter
Number acquiring unit 4, difference signal acquiring unit 5 and compensating unit 6.
Wherein, mode selecting unit 3 is in display mode, control display pixel 1 to carry out picture and shows, virtual pixel
2 do not shine；In the compensation mode, display pixel 1 and virtual pixel 2 is controlled to shine under the effect of the first data-signal respectively.
It is understood that display panel further includes scan drive cell 7, scan drive cell 7 is used for sequentially to display
Pixel in panel provides scanning drive signal.
Display panel in display mode, when display pixel 1 receives scanning drive signal, control by mode selecting unit 3
It makes to the offer of display pixel 1 and its corresponding data-signal, makes its normal luminous, receive scanning in virtual pixel 2 and drive
When dynamic signal, controls to virtual pixel 2 and black state data-signal is provided, it is made not shine, wherein black state data-signal refers to black state
The corresponding data-signal of picture.
Display panel in the compensation mode, when needing to obtain the first driving current signal, is received in display pixel 1 and is swept
When retouching driving signal, mode selecting unit 3 controls to display pixel 1 and provides black state data-signal, receives and sweeps in virtual pixel 2
When retouching driving signal, controls to virtual pixel 2 and first data-signal is provided；When needing to obtain the second driving current, showing
When pixel 1 receives scanning drive signal, mode selecting unit 3 controls to display pixel 1 and provides the first data-signal, virtual
When pixel 2 receives scanning drive signal, controls to virtual pixel 2 and black state data-signal is provided.
Optionally, mode selecting unit 3 can pass through data-signal output unit (not shown) and multiple data lines
Electrical connection, it is defeated to control data-signal in different modes by issuing corresponding control instruction to data-signal output unit
Unit exports corresponding data-signal to data line out, and display pixel 1 and virtual pixel 2 is made to be in corresponding luminance.
Current signal acquiring unit 4 is right under the effect of the first data-signal in the compensation mode, obtaining virtual pixel 2
The first driving current signal and acquisition display pixel 1 answered corresponding second driving current under the effect of the first data-signal
Signal.
Difference signal acquiring unit 5 is electrically connected with current signal acquiring unit 4, and difference signal acquiring unit 5 is used for basis
First driving current signal and the second driving current signal obtain data difference signal.
Compensating unit 6 is electrically connected with difference signal acquiring unit 5, and compensating unit 6 is for according to data difference signal and in advance
The luminance-voltage mapping relations first stored obtain the corresponding compensation data signal of the first data-signal, and are believed according to compensation data
Number display pixel 1 is compensated.
Optionally, compensating unit 6 can also be electrically connected by data-signal output unit (not shown) with multiple data lines
It connects, after obtaining compensation data signal, compensating unit 6 exports corresponding number to display pixel 1 by data-signal output unit
According to thermal compensation signal, the compensation to display pixel 1 is realized.
Using display panel provided by the embodiment of the present invention, under the premise of not influencing display pixel 1, it need to only pass through increasing
If virtual pixel 2, and then according to the first driving current signal, the second driving current signal and pre-stored luminance-voltage
Mapping relations can accurately know the corresponding compensation data signal of the first data-signal.Compared with prior art, the display panel
It can be realized and the higher real-time compensation of accuracy is carried out to display pixel 1, brightness declines caused by reducing because of 1 aging of display pixel
Subtract, the display performance of display panel, and the specific structure of the pixel circuit without changing display pixel 1 is improved, without non-
Connection cabling is added in viewing area, and there is higher exploitativeness.
Referring again to Figure 10, the quantity of virtual pixel 2 can be multiple, and multiple virtual pixels 2 are arranged along line direction.With
A virtual pixel 2 is only arranged in display panel to compare, multiple virtual pixels 2 are set, can be damaged to avoid because of single virtual pixel 2
It is bad to lead to not the problem of compensating to display pixel 1, also, the first driving current letter is calculated by way of being averaged
Number, the accuracy of the first acquired driving current can be improved, and then guarantee the subsequent accuracy compensated display pixel 1.
Optionally, referring again to Figure 10, display pixel 1 includes the first color display pixel 11, the second color display picture
Element 12 and third color display pixel 13, virtual pixel 2 include the first color virtual pixel 21,22 and of the second color virtual pixel
Third color virtual pixel 23.
By the way that the virtual pixel 2 of multiple color corresponding with 1 color of display pixel is arranged, and calculate the virtual of different colours
Corresponding first driving current signal of pixel 2 and corresponding second driving current signal of the display pixel of different colours 1, can
Separate compensation is carried out with the display pixel 1 to different colours, improves the accuracy that display pixel 1 compensates.
As shown in figure 11, Figure 11 is another structural schematic diagram of display panel provided by the embodiment of the present invention, electric current
Signal acquiring unit 4 specifically may include galvanometer 41 and analog-digital converter 42.Wherein, galvanometer 41 is for obtaining virtual pixel 2
Corresponding first current analog signal and display pixel 1 are under the effect of the first data-signal under the effect of the first data-signal
Corresponding second current analog signal.Analog-digital converter 42 is electrically connected with galvanometer 41 and difference signal acquiring unit 5, and modulus turns
Parallel operation 42 is used to the first current analog signal being converted to the first current digital signal, and the second current analog signal is converted to the
Two current digital signals.
Optionally, each virtual pixel 2 and the pixel circuit of each display pixel 1 are electrically connected with a galvanometer 41 respectively
It connects, alternatively, being located at the virtual pixel 2 of same row and pixel circuit and the same galvanometer 41 electrical connection of display pixel 1.
Compared with using other analog current acquisition modes, current analog signal is obtained by galvanometer 41, in reality
Using when there is higher operability, and cost of manufacture is lower.
Optionally, in conjunction with Fig. 3 and Fig. 4, referring again to Figure 11, when multiple virtual pixels 2 are arranged along line direction, and to every
When column display pixel 1 carries out separate compensation, the corresponding first electric current number of each virtual pixel 2 is being obtained by analog-digital converter 42
After word signal and corresponding second current digital signal of each display pixel 1, also need to drive to obtain with first by further calculating
The corresponding first driving current digital signal of streaming current signal and the second driving current number corresponding with the second driving current signal
Word signal.
Based on this, referring again to Figure 11, electric current acquiring unit may also include processor 43, at this point, analog-digital converter 42
It is electrically connected with difference signal acquiring unit 5 by processor 43.Processor 43 is used to be calculated empty according to the first current digital signal
Intend the corresponding first driving current digital signal of pixel 2 and according to multiple second current digital signals, calculates display pixel 1
Corresponding second driving current digital signal, specific calculating process are described in detail in the above-described embodiments, herein
It repeats no more.
Optionally, when the quantity of virtual pixel 2 is one, and carries out separate compensation to each display pixel 1, modulus turns
Parallel operation 42 is directly electrically connected with difference signal acquiring unit 5, at this point, the first current digital signal is the first driving current letter
Number corresponding first driving current digital signal, the second current digital signal are corresponding second driving of the second driving current signal
Current digital signal.
Referring again to Figure 11, difference signal acquiring unit 5 specifically may include deterioration factor computing module 51 and difference letter
Number analysis module 52.Wherein, deterioration factor computing module 51 is electrically connected with current signal acquiring unit 4, and deterioration factor calculates mould
Block 51 is used to calculate deterioration factor according to the first driving current signal and the second driving current signal.Difference signal analysis module
52 are electrically connected with deterioration factor computing module 51 and compensating unit 6, and difference signal analysis module 52 is used for according to calculated bad
Change coefficient and pre-stored deterioration factor-voltage mapping relations, obtains the corresponding data difference signal of deterioration factor.
Wherein, the calculation method of deterioration factor-voltage mapping relations construction method and deterioration factor is above-mentioned
It is described in detail in embodiment, details are not described herein again.
The embodiment of the invention also provides a kind of display devices, and as shown in figure 12, Figure 12 is provided by the embodiment of the present invention
Display device structural schematic diagram, which includes above-mentioned display panel 100.Wherein, the specific knot of display panel 100
Structure and compensating control method are described in detail in the above-described embodiments, and details are not described herein again.Certainly, shown in Figure 12
Display device is only schematically illustrate, which can be such as mobile phone, tablet computer, laptop, e-book
Or any electronic equipment having a display function such as television set.
Since display device provided in an embodiment of the present invention includes above-mentioned display panel 100, it is filled using the display
It sets, can be realized and the higher real-time compensation of accuracy is carried out to display pixel, brightness declines caused by reducing because of display pixel aging
Subtract, the display performance of display device, and the specific structure of the pixel circuit without changing display pixel is improved, without non-aobvious
Connection cabling is added in area and is shown, and there is higher exploitativeness.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (18)
1. a kind of compensating control method of display panel, which is characterized in that the compensating control method includes:
Obtain virtual pixel corresponding first driving current signal under the effect of the first data-signal；
Obtain display pixel corresponding second driving current signal under first data-signal effect；
According to first driving current signal and second driving current signal, data difference signal is obtained；
According to the data difference signal and pre-stored luminance-voltage mapping relations, first data-signal pair is obtained
The compensation data signal answered；
The display pixel is compensated according to the compensation data signal.
2. the compensating control method of display panel according to claim 1, which is characterized in that the quantity of the virtual pixel
To be multiple, and multiple virtual pixels are arranged along line direction；The acquisition virtual pixel is right under the effect of the first data-signal
The first driving current signal answered includes:
Obtain first total driving current I of multiple virtual pixels under first data-signal effect1；
According to I_du=I1/ K calculates the corresponding first driving current signal I_du of the virtual pixel, wherein K is described
The number of virtual pixel.
3. the compensating control method of display panel according to claim 2, which is characterized in that the display pixel includes the
One color display pixel, the second color display pixel and third color display pixel, the virtual pixel include that the first color is empty
Quasi- pixel, the second color virtual pixel and third color virtual pixel；
First total driving current I that multiple virtual pixels are obtained under first data-signal effect1It include: point
The first color virtual pixel, the second color virtual pixel and the third color virtual pixel are not obtained described
First total driving current I under the effect of one data-signal11~I13；
It is described according to I_du=I1/ K, calculating the corresponding first driving current signal I_du of the virtual pixel includes: basis
I_dui=I1i/Ki, i=1~3 calculate separately the first color virtual pixel, the second color virtual pixel and described
The corresponding first driving current signal I_du of third color virtual pixel1~I_du3。
4. the compensating control method of display panel according to claim 1, which is characterized in that the display pixel is in x row y
Column arrangement；The acquisition display pixel first data-signal effect under corresponding second driving current signal include:
Second total driving current I of the display pixel described in each column under first data-signal effect is obtained respectively21~I2y；
According to I_avm=I2m/ x, m=1~y calculate separately the corresponding second driving current letter of display pixel described in each column
Number I_av1~I_avy；
Described compensated according to the compensation data signal to the display pixel includes: the display pixel pair according to each column
The compensation data signal answered, the display pixel described in each column carry out separate compensation.
5. the compensating control method of display panel according to claim 1, which is characterized in that the quantity of the display pixel
It is W；The acquisition display pixel corresponding second driving current signal under first data-signal effect includes: difference
Obtain second driving current I of each display pixel under first data-signal effect21'~I2w′；
Described compensated according to the compensation data signal to the display pixel includes: according to each display pixel pair
The compensation data signal answered carries out separate compensation to each display pixel.
6. the compensating control method of display panel according to claim 1, which is characterized in that described to be driven according to described first
Streaming current signal and second driving current signal obtain data difference signal
According to first driving current signal and second driving current signal, deterioration factor is calculated；
According to calculated deterioration factor and pre-stored deterioration factor-voltage mapping relations, the deterioration factor pair is obtained
The data difference signal answered.
7. the compensating control method of display panel according to claim 6, which is characterized in that obtain the deterioration factor-
The detailed process of voltage mapping relations includes:
The corresponding standard driving current signal of each grayscale value in 0~255 grayscale is obtained under the unaged state of display panel
Inor, the corresponding practical driving current signal I of each grayscale value is obtained under display panel ageing stateact；
According to current-voltage mapping relations, the standard driving current signal I of each grayscale value is obtainednorCorresponding
Normal data signals VnorAnd the practical driving current signal IactCorresponding actual data signal Vact；
According to △ Vdata=Vact-Vnor, calculate the corresponding data difference signal △ Vdata of each grayscale value；
According to △ I=Inor-Iact, calculate the corresponding deterioration factor △ I of each grayscale value；
According to the corresponding △ I and △ Vdata of each grayscale value, the deterioration factor-voltage mapping relations are constructed；
It is described according to first driving current signal and second driving current signal, calculating deterioration factor includes: basis
△ I=I_du-I_av calculates deterioration factor △ I, wherein I_du is first driving current signal, and I_av is described second
Driving current signal.
8. the compensating control method of display panel according to claim 6, which is characterized in that obtain the deterioration factor-
The detailed process of voltage mapping relations includes:
0~255 grayscale is divided into multiple grayscale value groups, each grayscale value group includes endpoint grayscale value G1；
The corresponding standard driving current signal of each grayscale value in 0~255 grayscale is obtained under the unaged state of display panel
Inor, each endpoint grayscale value G is obtained under display panel ageing state1Corresponding practical driving current signal Iact1；
According to current-voltage mapping relations, the standard driving current signal I of each grayscale value is obtainednorCorresponding standard
Data-signal VnorAnd each endpoint grayscale value G1The practical driving current signal Iact1Corresponding real data
Signal Vact1；
According to △ Vdata1=Vact1-Vnor, calculate each endpoint grayscale value G1The corresponding data difference signal △
Vdata1；
According to △ I1=Inor/Iact1, calculate each endpoint grayscale value G1The corresponding deterioration factor △ I1；
According to G11-G10/G2-G10=(△ I11-△I10)/(△I2-△I10), calculate the intermediate grayscale of each grayscale value group
Value G2The corresponding deterioration factor △ I2, wherein G11And G10The respectively described intermediate grayscale value G2The two of place grayscale value group
A endpoint grayscale value, △ I11With △ I10Endpoint grayscale value G respectively11With endpoint grayscale value G10Corresponding deterioration factor；And according to △
I2=Inor/Iact2, calculate each intermediate grayscale value G2Corresponding practical driving current signal Iact2；
According to the current-voltage mapping relations, each intermediate grayscale value G is obtained2The practical driving current signal
Iact2Corresponding actual data signal Vact2, and according to △ Vdata2=Vact2-Vnor, calculate each intermediate grayscale value G2It is corresponding
The data difference signal △ Vdata2；
According to △ I1、△I2、△Vdata1With △ Vdata2, construct the deterioration factor-voltage mapping relations；
It is described according to first driving current signal and second driving current signal, calculating deterioration factor includes: basis
△ I=I_du/I_av calculates deterioration factor △ I, wherein I_du is first driving current signal, and I_av is described second
Driving current signal.
9. the compensating control method of display panel according to claim 7 or 8, which is characterized in that the display pixel packet
Including display pixel includes the first color display pixel, the second color display pixel and third color display pixel；
The current-voltage mapping relations include that the first current-voltage mapping corresponding with the first color display pixel is closed
System, the second current-voltage mapping relations corresponding with the second color display pixel and with the third color display pixel
Corresponding third current-voltage mapping relations；
The deterioration factor-voltage mapping relations include the first deterioration factor-electricity corresponding with the first color display pixel
Press mapping relations, the second deterioration factor-voltage mapping relations corresponding with the second color display pixel and with the third
The corresponding third deterioration factor-voltage mapping relations of color display pixel.
10. the compensating control method of display panel according to claim 1, which is characterized in that described according to the data
Difference signal and pre-stored luminance-voltage mapping relations obtain the corresponding compensation data signal of the first data wire size
Include:
According to the luminance-voltage mapping relations, corresponding first brightness value L 1 of the first data-signal Vdata1 is obtained；
According to the data difference signal △ Vdata and the luminance-voltage mapping relations, it is right to obtain Vdata1+ △ Vdata institute
The second brightness value L 2 answered；
According to △ L=L1-L2, luminance difference △ L is calculated；
According to the luminance-voltage mapping relations, corresponding data-signal Vdata, the number when brightness value is L1+ △ L are obtained
It is believed that number Vdata is the corresponding compensation data signal of the first data wire size.
11. the compensating control method of display panel according to claim 1, which is characterized in that the display pixel includes
First color display pixel, the second color display pixel and third color display pixel；
The luminance-voltage mapping relations include that the first luminance-voltage mapping corresponding with the first color display pixel is closed
System, the second luminance-voltage mapping relations corresponding with the second color display pixel and with the third color display pixel
Corresponding third luminance-voltage mapping relations.
12. a kind of display panel, which is characterized in that the display panel includes:
Display pixel；
Virtual pixel；
Mode selecting unit, the mode selecting unit are aobvious in display mode, controlling the display pixel progress picture
Show, the virtual pixel does not shine；In the compensation mode, the display pixel and the virtual pixel are controlled respectively described
The effect of one data-signal is lower to shine；
Current signal acquiring unit, the current signal acquiring unit are used under the compensation model, are obtained virtual pixel and are existed
Corresponding first driving current signal and acquisition display pixel are made in first data-signal under the effect of first data-signal
Corresponding second driving current signal under；
The difference signal acquiring unit being electrically connected with the current signal acquiring unit, the difference signal acquiring unit are used for root
According to first driving current signal and second driving current signal, data difference signal is obtained；
The compensating unit being electrically connected with the difference signal acquiring unit, the compensating unit are used to be believed according to the data difference
Number and pre-stored luminance-voltage mapping relations, obtain the corresponding compensation data signal of first data-signal, and according to
The compensation data signal compensates the display pixel.
13. display panel according to claim 12, which is characterized in that the quantity of the virtual pixel is multiple and more
A virtual pixel is arranged along line direction.
14. display panel according to claim 13, which is characterized in that the display pixel includes that the first color shows picture
Element, the second color display pixel and third color display pixel, the virtual pixel include the first color virtual pixel, the second face
Color virtual pixel and third color virtual pixel.
15. display panel according to claim 12, which is characterized in that the current signal acquiring unit includes:
Galvanometer, the galvanometer is for obtaining the virtual pixel corresponding first current-mode under the effect of the first data-signal
Quasi- signal and the display pixel corresponding second current analog signal under first data-signal effect；
The analog-digital converter being electrically connected with the galvanometer and the difference signal acquiring unit, the analog-digital converter is used for will
First current analog signal is converted to the first current digital signal, and second current analog signal is converted to the second electricity
Streaming digital signal.
16. display panel according to claim 15, which is characterized in that the display pixel described in each column carries out separate compensation
When, the analog-digital converter and the difference signal acquiring unit are electrically connected by processor；
The processor is used to calculate corresponding first driving of the virtual pixel according to first current digital signal
Current digital signal and according to multiple second current digital signals, calculates the display pixel corresponding described second
Driving current digital signal.
17. display panel according to claim 12, which is characterized in that the difference signal acquiring unit includes:
The deterioration factor computing module being electrically connected with the current signal acquiring unit, the deterioration factor computing module are used for root
According to first driving current signal and second driving current signal, deterioration factor is calculated；
The difference signal analysis module being electrically connected with the deterioration factor computing module and the compensating unit, the difference signal
Analysis module is used to be obtained described bad according to calculated deterioration factor and pre-stored deterioration factor-voltage mapping relations
Change the corresponding data difference signal of coefficient.
18. a kind of display device, which is characterized in that the display device includes as claim 12~17 is described in any item aobvious
Show panel.
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