Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present inventionIt is clearly and completely described, it is clear that described embodiment is only that a part of the invention is realApply example, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skillThe every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to thisInvent the scope of protection.
Generally, liquid crystal display exists because of Mura (clouds caused by brightness irregularities when in useLine) defect phenomenon, therefore display device is by existing during the progress content display of the screen of Mura defects,The information that beholder receives includes original contents and two parts of Mura information, due to Mura lettersBreath influences whether the viewing experience of viewing recipient, therefore generally by De-Mura methods to MuraDefect is suppressed.The target of De-Mura methods is exactly by entering to the Mura information in screenRow analysis, obtains De-Mura penalty coefficients, i.e. De-Mura processing is adjusted to display content,The Mura information wherein included is suppressed and eliminated, so that the viewing effect of display contentImproved.Exemplary, the method for De-Mura processing is by standard white field grayscale signal pairDisplay content in screen is calibrated, and obtaining screen should relative to screen under standard white field GTGDisplay content brightness bright position partially, and combine De-Mura penalty coefficients, to should relative to screenDisplay content brightness bright position partially carries out brightness compacting, to it should be shown relative to screen in screen inHold brightness dark position partially and carry out luminance raising, be close to screen and answer display content brightness, pass throughProcessing makes Mura defect of the screen under each GTG be inhibited above.Wherein, under each GTGDe-Mura penalty coefficients are generally stored in De-Mura look-up tables.
De-Mura look-up tables carry out processing life by the way of automation is used in dark room conditionsInto.Specifically, by making screen display standard white field grayscale signal, then control luminance meter equipment pairThe standard white field grayscale signal that screen is currently shown is shot；Shoot in obtained information and generally wrapContaining background information, it is necessary to which extraction is identified to the viewing area of screen；Recognize that extraction can basisThe difference of screen area display brightness value under different GTGs, by the viewing area of screen and backgroundRegion is distinguished, so as to be identified and extract.According to the screen area extracted, it can obtainTo screen Mura under present intensity distribution situation, by computing, obtain carrying under present intensityIn the screen area got, there is the coefficient that Mura positions should be compensated, so as to obtain at leastInclude the corresponding relation each display unit under different brightness degrees with DE-Mura penalty coefficientsDe-Mura penalty coefficient look-up tables.
The Mura eliminated based on above-mentioned De-Mura compensation ways principle, shown in reference picture 1,Embodiments of the invention provide a kind of method for eliminating display device Mura, applied to display screen,Wherein described display screen includes the display unit by matrix distribution, wherein each display unit is comprising extremelyA few pixel cell；Specifically include following steps：
101st, obtain the corresponding environmental light intensity of target display unit and obtain the first penalty coefficient, wherein,First penalty coefficient is to combine De-Mura look-up tables, display unit mark, brightness of display unit etc.Level obtain, DE-Mura look-up tables comprise at least each display unit under different brightness degrees withThe corresponding relation of penalty coefficient.
Wherein, target display unit is any display unit in display screen, or Mura occurDisplay unit, while can also be to whole screen display unit carry out comprehensive statistics situation.
Environmental light intensity is the measurement to the ambient light degree of strength of display screen local environment, environmental light intensityIt can be measured by ambient light sensor varying environment according to where display screen, can also be by storing ringThe storage facilities of border light intensity is by outside input；Environmental light intensity can be one or more discrete values, orThe scope of one or more serial numbers or with light source parameters, display screen position, displayForm or matrix in screen corresponding to one or more parameters such as position of display unit.
The corresponding environmental light intensity of target display unit be according to target display unit within display screenObtained by position, the environmental light intensity with reference to display screen local environment, target display unit is correspondingEnvironmental light intensity represents the ambient light degree of strength of target display unit present position.Target display unit existsPosition in display screen can be the absolute coordinate of target display unit, or target display is singleMember is relative to display screen entirety or certain a part of relative coordinate.
Target display unit brightness degree is the measurement to the brightness of target display unit or luminance level, canRepresented with the brightness value by target display unit, or can also be by the ash of target display unitRank, target display unit color component (it is exemplary as：RGB (red (Red), green (Green),Blue (Blue)) component), the driving voltage of target display unit etc. represent, as long as it can be used in directlyConnect or indirectly weigh the brightness of target display unit or luminance level, will not be described here.
DE-Mura look-up tables comprise at least each display unit under different brightness degrees with compensationThe corresponding relation of coefficient, wherein target display unit mark be to target display unit within display screenThe mark that present position is carried out, the different display unit for identifying.Identified according to target display unitTarget display unit is searched in De-Mura look-up tables with target display unit brightness degree correspondingPenalty coefficient, obtains penalty coefficient of the target display unit under corresponding bright grade, i.e., the first compensationCoefficient.
Display unit in De-Mura look-up tables can be whole display units of display screen, also may be usedThink a part of display unit for the display screen chosen with sample mode.
Exemplary, so that display unit size is 1 pixel cell as an example, in rgb color standardIn pixel cell include tri- pixels of RGB, determined according to the value condition of RGB component aobviousShow the brightness degree of unit, X1Value represent pixel cell along along the horizontal edge direction of display screenPosition, Y1Value represent object pixel with the position in display screen horizontal sides vertical direction, KThe value condition of object pixel RGB component is represented, Adj represents the first penalty coefficient of display unit.With reference to De-mura look-up tables, taken according to the RGB component of the position of object pixel and object pixelValue situation carries out the computing of object pixel De-mura penalty coefficients, as follows：
Adj=Func (X1, Y1, K)
102nd, according to the corresponding environmental light intensity of target display unit and the first penalty coefficient, second is obtainedPenalty coefficient.
It is corresponding to target display unit according to the corresponding environmental light intensity of target display unit obtainedFirst penalty coefficient is handled.
The processing that the first penalty coefficient corresponding to target display unit is carried out can be according to targetThe size of the corresponding environmental light intensity of display unit, it is proportional to the first penalty coefficient adjustment orIt is adjusted in the first penalty coefficient plus a preset value (preset value can be negative).
103rd, target display unit is handled according to second penalty coefficient.
Wherein, the second penalty coefficient refers to can be used for compensating the display parameters of target display unitThe value of computing, the second penalty coefficient can be correction value or correction factor.Wherein display parameters refer to influenceThe data of display unit displayed content, the display parameters of the target display unit can show for targetThe brightness degree of unit, certain display parameters be alternatively the brightness value of target display unit, GTG,Color component, driving voltage etc., will not be described here.
When carrying out De-Mura compensation deals, the target display unit before compensation deals can be shownParameter is compensated plus penalty coefficient, can also be shown the target display unit before compensation deals and be joinedNumber is multiplied by the penalty coefficient and compensated.The mode of De-Mura compensation deals is carried out with reference to penalty coefficientCan also be other types, can be to corresponding aobvious as long as combining penalty coefficient in the compensation deals modeShow that unit carries out De-Mura compensation, do not do excessive description herein.
The method for eliminating display device Mura that embodiments of the invention are provided, applied to display screen,Wherein display screen includes the display unit by matrix distribution, and each display unit includes at least one picturePlain unit, the corresponding environmental light intensity of target display unit can be obtained by eliminating display device Mura devices；And the first penalty coefficient is obtained, wherein the first penalty coefficient is with reference to De-Mura look-up tables, displayUnit marks, the brightness degree of display unit are obtained, and DE-Mura look-up tables comprise at least display unitMark and the corresponding relation of penalty coefficient；Then according to the corresponding environmental light intensity of target display unit and instituteThe first penalty coefficient is stated, the second penalty coefficient is obtained；Finally eliminate display device Mura devices according toSecond penalty coefficient is handled target display unit, aobvious to target here according to the second penalty coefficientShow that unit progress processing refers to enter the image that display unit is shown according to the second newly-generated penalty coefficientRow modulation is compensated, environmental light intensity of the above method with reference to corresponding to the display unit for Mura occur,The first penalty coefficient for Mura display unit occur is handled, the second penalty coefficient is obtained,And carried out when carrying out De-Mura processing according to the second penalty coefficient to there is Mura display unitDe-Mura processing, therefore be into one carrying out De-Mura processing in the scheme that the application is providedThe influence for having taken into account the Mura defects that environmental light intensity is produced to display unit of step, so that according to ringThe degree of strength of border light, adjusts De-Mura treatment effects, makes the image quality and display effect of display screenLifting.
Shown in reference picture 2, another embodiment of the present invention provides a kind of elimination display device Mura'sMethod, applied to display screen, wherein the display screen includes the display unit by matrix distribution,Wherein each display unit includes at least one pixel cell, specifically includes following steps：
201st, matrix of display elements is generated to display screen piecemeal, matrix of display elements is sampled and obtainedTarget display unit.
Wherein, can be using display screen to the piecemeal of display screen while as X-axis, being hung down with X-axisDisplay screen is divided into a row being distributed along X-axis and the b rows being distributed along Y-axis by straight direction as Y-axis,So as to which display screen is divided into the matrix of display elements that size is a × b, wherein single comprising a × b displayMember.Can also be to the piecemeal of display screen to the pixel included in display screen according to sum of all pixels with it is everyThe ratio of one piece of pixel count carries out piecemeal, regard each block as a matrix of display elements.
Matrix of display elements is sampled, can be that one or more displays are chosen from matrix of display elementsUnit is used as target display unit.
Exemplary, the resolution ratio of display screen is M × N (M rows N row), i.e., with M*NPixel, regard K*K pixel as a display unit,Then there is whole display screen to be divided into(M/K) * (N/K) individual unit (M/K rows N/K row), meanwhile, if m=M/K, n=N/K, therefore,The size of matrix of display elements is m × n (m rows n row).
202nd, the corresponding environmental light intensity of target display unit is obtained, and obtains the first penalty coefficient, itsIn, the first penalty coefficient be with reference to De-Mura look-up tables, display unit mark, display unit it is brightGrade is spent to obtain；Wherein, DE-Mura look-up tables comprise at least display unit and identified and De-MuraThe corresponding relation of penalty coefficient.
Environmental light intensity is the measurement to the ambient light degree of strength of display screen local environment, environmental light intensityIt can be measured by ambient light sensor varying environment according to where display screen, can also be by storing ringThe storage facilities of border light intensity is by outside input；Environmental light intensity can be one or more discrete values, orThe scope of one or more serial numbers or with light source parameters, display screen position, displayForm or matrix in screen corresponding to one or more parameters such as position of display unit.
The corresponding environmental light intensity of target display unit be according to target display unit within display screenObtained by position, the environmental light intensity with reference to display screen, the corresponding environmental light intensity of target display unitRepresent the ambient light degree of strength of target display unit present position.Target display unit is in display screenIn position can be target display unit absolute coordinate, or target display unit relative toDisplay screen entirety or certain a part of relative coordinate.
Target display unit brightness degree is the measurement to the brightness of target display unit or luminance level, canRepresented with the brightness value by target display unit, naturally it is also possible to pass through the ash of target display unitThe expression such as rank, the color component of target display unit, driving voltage of target display unit, as long as itsIt can be used in direct or indirect measurement target display unit brightness or luminance level, do not do hereinRepeat.
DE-Mura look-up tables comprise at least each display unit under different brightness degrees with compensationThe corresponding relation of coefficient, wherein target display unit mark be to target display unit within display screenThe mark that present position is carried out.Existed according to target display unit mark with target display unit brightness degreeThe corresponding penalty coefficient of target display unit is searched in De-Mura look-up tables, target display unit is obtainedPenalty coefficient under corresponding bright grade, i.e. the first penalty coefficient.It is aobvious in De-Mura look-up tablesIt can be whole display units of display screen to show unit, or the display chosen with sample modeA part of display unit of screen.
203rd, the first penalty coefficient is adjusted according to the adjusted value of target display unit brightness degree.
Wherein, the adjusted value of target display unit brightness degree is that the brightness of target display unit is changedWeigh, brightness value that can be for target display unit or brightness degree, GTG, color component, drivingAdjusted value of voltage etc., if its can be used in direct or indirect measurement target display unit brightness orThe change of luminance level, will not be described here.
As target display unit brightness degree changes, Mura present in target display unitDegree may also change therewith, be obtained according to target display unit brightness degree before
De-Mura penalty coefficients, it is impossible to accurate that De-Mura processing is carried out to target display unit.Therefore rootThe first penalty coefficient is adjusted according to the adjusted value of target display unit brightness degree, made according to adjustmentThe first penalty coefficient accurately can compensate processing to target display unit De-Mura afterwards.
The first penalty coefficient is adjusted according to the adjusted value of target display unit brightness degree, can be withIt is to choose one or more target display unit brightness degrees as normal brightness grade, with reference toDe-Mura look-up tables, target display unit mark and normal brightness grade, obtain target display singleMember the first penalty coefficient corresponding under each normal brightness grade, combining target display unit is everyThe first corresponding penalty coefficient, obtains target by the method for interpolation and shows under individual normal brightness gradeThe first corresponding penalty coefficient under the brightness degree of unit after the adjustment.
The first penalty coefficient is adjusted according to the adjusted value of target display unit brightness degree, also may be usedBe according to the adjusted value of target display unit brightness degree to the first penalty coefficient before adjustment into thanExample adjustment, or carried out in the first penalty coefficient plus a preset value (preset value can be negative)Adjustment, as long as above-mentioned adjustment can be changed to the first benefit by adjusting reflection target display unit brightness degreeThe adjustment of coefficient tape is repaid, be will not be described here.
Exemplary, the change of display unit brightness degree is weighed by the GTG of display unit.It is aobviousShow that unit has 256 GTGs, 32,64,128,192,255 GTGs are selected from 256 GTGsAs standard gray scale, wherein for 0 GTG and 255 GTGs, being used as two of 0-255 grey-scale rangesEnd points, default setting is standard gray scale, and due to shadow of the display unit by ambient light under 0 GTGLoud possibility is big, and the first penalty coefficient default setting of display unit is equal to 1 under 0 GTG.When needProcessing is compensated to the location of pixels that grey decision-making is equal to 96, two adjoining standard gray scales are64 GTGs and 128 GTGs, according to the first penalty coefficient of display unit under 64 GTGs and 128 GTGs,Interpolation calculation is carried out to the first penalty coefficient of display unit under 96 GTGs, obtains showing under 96 GTGsFirst penalty coefficient of unit.
Above-mentioned steps are adjusted by the adjusted value of combining target display unit GTG by interpolation methodFirst penalty coefficient corresponding to target display unit brightness degree afterwards, is not reducing De-Mura processingOn the premise of effect, when the target display unit is carried out De-Mura processing under multiple brightness degrees,The penalty coefficient quantity included in required De-Mura look-up tables is reduced as far as possible, is reducedThe occupancy of resource in De-Mura processing methods.
204th, according to the corresponding environmental light intensity of target display unit and the first penalty coefficient after adjustment,Obtain the second penalty coefficient.
It is corresponding to target display unit according to the corresponding environmental light intensity of target display unit obtainedThe first penalty coefficient after adjustment is handled.
The processing that the first penalty coefficient after adjustment corresponding to target display unit is carried out can beAccording to the size of the corresponding environmental light intensity of target display unit, after adjustment corresponding to target display unitThe proportional adjustment of the first penalty coefficient or to the after the corresponding adjustment of target display unitOne penalty coefficient is adjusted plus a preset value (preset value can be negative).
Exemplary, Adj_h represents the first penalty coefficient after the corresponding adjustment of target display unit,Env represents the strong and weak extent index of the corresponding ambient light of target display unit, and Adj_Dst represents target and shownCorresponding second penalty coefficient of unit, as shown in following formula：
Adj_Dst=Func (Adj_h, Env)
According to Adj_h and Env, the second penalty coefficient Adj_Dst is obtained, when Adj_Dst is more than 1, tableThe brightness of improving eyesight mark display unit needs to be lifted；When Adj_Dst is less than 1, show that target display is singleThe brightness of member needs to be suppressed；When Adj_Dst is equal to 1, show that target display unit need not be carried outAdjustment.
Wherein when ambient light is weaker, the mura phenomenons in screen are easier to be found, simultaneously becauseAmbient light is weaker, now appropriateness weaken display brightness be also acceptable (when i.e. env is smaller,After screen is adjusted with reference to above formula, Adj_Dst is set to be less than 1, and as env reduces and reduces)；When ambient light is stronger, now due to the interference of ambient light, the mura phenomenons in screen be not easy byIt was found that, meanwhile, influenceed by highlighted ambient light, the brightness of screen needs to be maintained at higher degree,The influence of ambient light can be suppressed, the effect of image quality is kept (when i.e. env is larger, with reference to above formula pairAfter screen is adjusted, Adj_Dst is set to be more than 1, and as env increases and increases).
205th, according to the second penalty coefficient by two adjacent target display units of interpolation calculation itBetween other display unit the second penalty coefficient.
Wherein, other display unit is not obtain the display list of its second penalty coefficient in display screenMember.
For one or more other display units, by the two display lists adjacent with other display unitMember, by above-mentioned steps 201-204, obtains two target display units as target display unitCorresponding second penalty coefficient of difference.With reference to corresponding second compensation of two target display unit differenceCoefficient, by interpolation method, calculates the second penalty coefficient of other display unit, so as to avoid passing throughStep described in 201-204 obtains the second penalty coefficient of other display unit, reduces to resourceTake, improve treatment effeciency.
206th, target display unit is handled according to the second penalty coefficient, it is single according to other displaysSecond penalty coefficient of member is handled other display unit.
Wherein, the second penalty coefficient refers to can be used for compensating the display parameters of target display unitThe value of computing, the second penalty coefficient can be correction value or correction factor.Wherein display parameters refer to influenceThe data of display unit displayed content, the display parameters of the target display unit can show for targetThe brightness degree of unit, certain display parameters be alternatively the brightness value of target display unit, GTG,Color component, driving voltage etc., will not be described here.
When carrying out De-Mura compensation deals, the target display unit before compensation deals can be shownParameter is compensated plus penalty coefficient, can also be shown the target display unit before compensation deals and be joinedNumber is multiplied by the penalty coefficient and compensated.The mode of De-Mura compensation deals is carried out with reference to penalty coefficientCan also be other types, can be to corresponding aobvious as long as combining penalty coefficient in the compensation deals modeShow that unit carries out De-Mura compensation, do not do excessive description herein.
When target display unit or weaker other display unit correspondence ambient light, it is according to the second compensationThe processing that number carries out De-Mura of the De-Mura treatment effect with being carried out according to the first penalty coefficient is imitatedFruit is compared to stronger, and when target display unit or stronger other display unit correspondence ambient light, according toSecond penalty coefficient carries out De-Mura treatment effect and according to the progress of the first penalty coefficientDe-Mura treatment effect is compared to weaker.
It is preferred that, the second penalty coefficient is contrasted according to preset value, wherein preset value is target display unitOr the value of other display unit penalty coefficient when Mura is not present, when the second penalty coefficient be more than it is defaultDuring value, the brightness to target display unit or other display unit is lifted；When the second penalty coefficientDuring less than preset value, the brightness to target display unit or other display unit is suppressed.
Exemplary, using target display unit or other display units as a pixel cell, with describedThe gray value of pixel cell weighs its brightness degree, its gray scale of the pixel cell RGB component correspondenceValue, the second penalty coefficient is the gray-level correction value of the pixel, for there is the Mura pixel,Being compensated in the corresponding gray value of the pixel cell RGB component plus the second penalty coefficient { shouldCorrection value can be negative), wherein, for the pixel without Mura, its gray-level correction value is 0.
It will be evident that when target display unit correspondence ambient light is weaker, being carried out according to the second penalty coefficientDe-Mura treatment effect is compared with the De-Mura carried out according to the first penalty coefficient treatment effectIt is stronger, and when target display unit correspondence ambient light is stronger, carried out according to the second penalty coefficientDe-Mura treatment effect is compared with the De-Mura carried out according to the first penalty coefficient treatment effectIt is weaker.
The method for eliminating display device Mura that embodiments of the invention are provided, applied to display screen,Wherein display screen includes the display unit by matrix distribution, and each display unit includes at least one picturePlain unit, the corresponding environmental light intensity of target display unit can be obtained by eliminating display device Mura devices；And the first penalty coefficient is obtained, wherein the first penalty coefficient is with reference to De-Mura look-up tables, displayUnit marks, the brightness degree of display unit are obtained, and DE-Mura look-up tables comprise at least display unitMark and the corresponding relation of penalty coefficient；Compensated according to the adjusted value of object element brightness degree firstCoefficient is adjusted；Then mended according to the corresponding environmental light intensity of target display unit with first after adjustmentCoefficient is repaid, the second penalty coefficient is obtained；According to the second penalty coefficient, by interpolation calculation it is adjacent itsSecond penalty coefficient of his display unit；Display device Mura devices are finally eliminated according to the second compensationCoefficient is handled display unit, and display unit progress processing is referred to here according to the second penalty coefficientThe image that display unit is shown is modulated or compensated according to the second newly-generated penalty coefficient, it is above-mentionedMethod is adjusted by the adjusted value of combination display unit brightness degree to the first penalty coefficient, itEnvironmental light intensity with reference to corresponding to the display unit for Mura occur afterwards, to there is Mura display unitThe first penalty coefficient handled, obtain the second penalty coefficient, at the same by differential technique obtain with it is aobviousShow the second penalty coefficient of other adjacent units of unit, finally when carrying out De-Mura processing according to theTwo penalty coefficients carry out De-Mura processing to there is Mura display unit, therefore are carried in the applicationIt is further when carrying out De-Mura processing to have taken into account that environmental light intensity is single to display in the scheme of confessionThe influence for the Mura defects that member is produced, so as to according to the degree of strength of ambient light, adjust De-MuraTreatment effect, reduces occupancy of the De-Mura processing to resource, improves De-Mura treatment effeciencies,The image quality and display effect for making display screen are lifted.
Shown in reference picture 3, another embodiment of the present invention provides a kind of elimination display device Mura'sMethod, applied to display screen, wherein the display screen includes the display unit by matrix distribution,Wherein each display unit includes at least one pixel cell, specifically includes following steps：
301st, matrix of display elements is generated to display screen piecemeal, matrix of display elements is sampled and obtainedTarget display unit.
Specific example is repeated no more here with reference to above-mentioned steps 201.
302nd, obtain the corresponding environmental light intensity of target display unit and obtain the first penalty coefficient, wherein,First penalty coefficient is to combine De-Mura look-up tables, display unit mark, brightness of display unit etc.Level is obtained；Wherein, DE-Mura look-up tables, which comprise at least display unit mark and compensated with De-Mura, isSeveral corresponding relations.
Specific example is repeated no more here with reference to above-mentioned steps 202.
303rd, according to the corresponding environmental light intensity of target display unit and the first penalty coefficient, second is obtainedPenalty coefficient.
It is corresponding to target display unit according to the corresponding environmental light intensity of target display unit obtainedFirst penalty coefficient is handled.
The adjustment that the first penalty coefficient corresponding to target display unit is carried out can be according to targetThe size of the corresponding environmental light intensity of display unit, the first penalty coefficient corresponding to target display unit intoRatio is adjusted or to corresponding first penalty coefficient of target display unit plus a preset value(preset value can be negative) is adjusted.
Exemplary, Adj represents corresponding first penalty coefficient of target display unit, and Env represents targetThe strong and weak extent index of the corresponding ambient light of display unit, it is corresponding that Adj_Dst represents target display unitSecond penalty coefficient, following formula：
Adj_Dst=Func (Adj, Env)
According to Adj and Env, the second penalty coefficient Adj_Dst is obtained, when Adj_Dst is more than 1, is shownThe brightness of target display unit needs to be lifted；When Adj_Dst is less than 1, show target display unitBrightness need to be suppressed；When Adj_Dst is equal to 1, show that target display unit need not be adjustedIt is whole.
304th, the second penalty coefficient is adjusted according to the adjusted value of target display unit brightness degree.
Wherein, the adjusted value of target display unit brightness degree is that the brightness of target display unit is changedWeigh, can be represented by the brightness value of target display unit, or can also show single by targetThe expression such as GTG, the color component of target display unit, driving voltage of target display unit of member,As long as it can be used in direct or indirect measurement target display unit brightness or the change of luminance level, will not be described here.
As target display unit brightness degree changes, Mura present in target display unitDegree may also change therewith, be obtained according to target display unit brightness degree beforeDe-Mura penalty coefficients, it is impossible to accurate that De-Mura processing is carried out to target display unit.Therefore rootThe second penalty coefficient is adjusted according to the adjusted value of target display unit brightness degree, made according to adjustmentThe second penalty coefficient afterwards accurately can compensate processing to target display unit De-Mura.
The second penalty coefficient is adjusted according to the adjusted value of target display unit brightness degree, can be withIt is to choose one or more target display unit brightness degrees as normal brightness grade, with reference toDe-Mura look-up tables, target display unit mark and normal brightness grade, obtain target display singleMember the second penalty coefficient corresponding under each normal brightness grade, combining target display unit is everyThe second corresponding penalty coefficient, obtains target by the method for interpolation and shows under individual normal brightness gradeThe second corresponding penalty coefficient under the brightness degree of unit after the adjustment.
The second penalty coefficient is adjusted according to the adjusted value of target display unit brightness degree, also may be usedBe according to the adjusted value of target display unit brightness degree to the second penalty coefficient before adjustment into thanExample adjustment, or carried out in the second penalty coefficient plus a preset value (preset value can be negative)Adjustment, as long as above-mentioned adjustment can be changed to the second benefit by adjusting reflection target display unit brightness degreeThe adjustment of coefficient tape is repaid, be will not be described here.
Exemplary, the change of display unit brightness degree is weighed by the GTG of display unit.It is aobviousShow that unit has 256 GTGs, 32,64,128,192,255 GTGs are selected from 256 GTGsAs standard gray scale, wherein for 0 GTG and 255 GTGs, being used as two of 0-255 grey-scale rangesEnd points, default setting is standard gray scale, and due to shadow of the display unit by ambient light under 0 GTGLoud possibility is big, and the second penalty coefficient default setting of display unit is equal to 1 under 0 GTG.When needProcessing is compensated to the location of pixels that grey decision-making is equal to 96, two adjoining standard gray scales are64 GTGs and 128 GTGs, according to the second penalty coefficient of display unit under 64 GTGs and 128 GTGs,Interpolation calculation is carried out to the second penalty coefficient of display unit under 96 GTGs, obtains showing under 96 GTGsSecond penalty coefficient of unit.
Above-mentioned steps are adjusted by the adjusted value of combining target display unit GTG by interpolation methodSecond penalty coefficient corresponding to target display unit brightness degree afterwards, is not reducing De-Mura processingOn the premise of effect, when the target display unit is carried out De-Mura processing under multiple brightness degrees,The first required penalty coefficient is reduced as far as possible, and then makes what is included in required De-Mura look-up tablesPenalty coefficient quantity is reduced as far as possible, reduces the occupancy of resource in De-Mura processing methods.
305th, it is aobvious by two adjacent targets of interpolation calculation according to the second penalty coefficient after adjustmentShow the second penalty coefficient of the other display unit between unit.
Wherein, other display unit is not obtain the display list of its second penalty coefficient in display screenMember.
For one or more other display units, by the two display lists adjacent with other display unitMember, by above-mentioned steps 301-304, obtains two target display units as target display unitThe second penalty coefficient after each self-corresponding adjustment.With reference to each self-corresponding tune of two target display unitsThe second penalty coefficient after whole, by interpolation method, calculates the second penalty coefficient of other display unit,So as to avoid passing through the second penalty coefficient that step described in 301-304 obtains other display unit, dropThe low occupancy to resource, improves treatment effeciency.
306th, target display unit is handled according to the second penalty coefficient after adjustment, according to itHe is handled other display unit the second penalty coefficient of display unit.
Wherein, the second penalty coefficient refers to can be used for compensating the display parameters of target display unitThe value of computing, the second penalty coefficient can be correction value or correction factor.Wherein display parameters refer to influenceThe data of display unit displayed content, the display parameters of the target display unit can be aobvious by targetShow that the brightness value of unit is represented, or can also show single by the GTG of target display unit, targetColor component, driving voltage of target display unit of member etc. are represented, will not be described here.
When carrying out De-Mura compensation deals, the target display unit before compensation deals can be shownParameter is compensated plus penalty coefficient, can also be shown the target display unit before compensation deals and be joinedNumber is multiplied by the penalty coefficient and compensated.The mode of De-Mura compensation deals is carried out with reference to penalty coefficientCan also be other types, can be to corresponding aobvious as long as combining penalty coefficient in the compensation deals modeShow that unit carries out De-Mura compensation, do not do excessive description herein.
When target display unit or weaker other display unit correspondence ambient light, it is according to the second compensationThe processing that number carries out De-Mura of the De-Mura treatment effect with being carried out according to the first penalty coefficient is imitatedFruit is compared to stronger, and when target display unit or stronger other display unit correspondence ambient light, according toSecond penalty coefficient carries out De-Mura treatment effect and according to the progress of the first penalty coefficientDe-Mura treatment effect is compared to weaker.
It is preferred that, the second penalty coefficient is contrasted according to preset value, wherein preset value is target display unitOr the value of other display unit penalty coefficient when Mura is not present, when the second penalty coefficient be more than it is defaultDuring value, the brightness to target display unit or other display unit is lifted；When the second penalty coefficientDuring less than preset value, the brightness to target display unit or other display unit is suppressed.
The method for eliminating display device Mura that embodiments of the invention are provided, applied to display screen,Wherein display screen includes the display unit by matrix distribution, and each display unit includes at least one picturePlain unit, the corresponding environmental light intensity of target display unit can be obtained by eliminating display device Mura devices；And the first penalty coefficient is obtained, wherein the first penalty coefficient is with reference to De-Mura look-up tables, displayUnit marks, the brightness degree of display unit are obtained, and DE-Mura look-up tables comprise at least display unitMark and the corresponding relation of penalty coefficient；Mended according to the corresponding environmental light intensity of target display unit and firstCoefficient is repaid, the second penalty coefficient is obtained；Compensated according to the adjusted value of object element brightness degree secondCoefficient is adjusted；According to the second penalty coefficient after adjustment, pass through adjacent other of interpolation calculationSecond penalty coefficient of display unit；Finally eliminate display device Mura devices is according to the second compensationIt is several that display unit is handled, here according to the second penalty coefficient to display unit progress processing refer to according toThe image that display unit is shown is modulated or compensated according to the second newly-generated penalty coefficient, above-mentioned sideMethod is adjusted, afterwards by the adjusted value of combination display unit brightness degree to the first penalty coefficientEnvironmental light intensity with reference to corresponding to the display unit for Mura occur, to there is Mura display unitFirst penalty coefficient is handled, and obtains the second penalty coefficient, while being obtained by differential technique with showingSecond penalty coefficient of the adjacent other display unit of unit, finally carry out De-Mura processing when according toSecond penalty coefficient carries out De-Mura processing to there is Mura display unit, therefore in the applicationIt is further when carrying out De-Mura processing to have taken into account environmental light intensity to display in the scheme of offerThe influence for the Mura defects that unit is produced, so as to according to the degree of strength of ambient light, adjust De-MuraTreatment effect, while reducing occupancy of the De-Mura processing to resource, improves De-Mura treatment effeciencies,The image quality and display effect for making display screen are lifted.
Embodiments of the invention provide a kind of elimination display device Mura devices, applied to display screenWherein described display screen includes the display unit by matrix distribution, wherein each display unit is comprising extremelyA few pixel cell, shown in reference picture 4, the device includes：
Detection unit 41, for obtaining the corresponding environmental light intensity of target display unit；Wherein, target showsIt is any display unit in display screen to show unit, or Mura display unit occur, togetherWhen can also be to whole screen display unit carry out comprehensive statistics situation.
Environmental light intensity is the measurement to the ambient light degree of strength of display screen local environment.
The corresponding environmental light intensity of target display unit be according to target display unit within display screenObtained by position, the environmental light intensity with reference to display screen local environment.
Processing unit 42, obtains the first penalty coefficient, the first penalty coefficient is looked into reference to De-MuraTable, display unit mark, the brightness degree of display unit is looked for obtain, DE-Mura look-up tables are at leastInclude the corresponding relation each display unit under different brightness degrees with penalty coefficient.
DE-Mura look-up tables comprise at least each display unit under different brightness degrees with compensationThe corresponding relation of coefficient, wherein target display unit mark be to target display unit within display screenThe mark that present position is carried out.Mesh is searched in De-Mura look-up tables according to target display unit markMark display unit corresponding penalty coefficient, the brightness degree of combining target display unit and foundPenalty coefficient, obtains penalty coefficient of the target display unit under corresponding bright grade, i.e., the first compensationCoefficient.
Processing unit 42, for according to the corresponding environmental light intensity of the target display unit and described firstPenalty coefficient, obtains the second penalty coefficient；According to the corresponding ambient light of target display unit obtainedBy force, the first penalty coefficient corresponding to target display unit is handled.
Compensating unit 43, for being handled according to second penalty coefficient target display unit.
A kind of elimination display device Mura devices that embodiments of the invention are provided, applied to display screenCurtain, wherein display screen include the display unit by matrix distribution, and each display unit includes at least oneIndividual pixel cell, the corresponding environment of target display unit can be obtained by eliminating display device Mura devicesLight intensity；And obtain the first penalty coefficient, wherein the first penalty coefficient be with reference to De-Mura look-up tables,Display unit mark, the brightness degree of display unit are obtained, and DE-Mura look-up tables comprise at least displayThe corresponding relation of unit marks and penalty coefficient；Then according to the corresponding environmental light intensity of target display unitWith first penalty coefficient, the second penalty coefficient is obtained；Finally eliminate display device Mura devicesTarget display unit is handled according to the second penalty coefficient, here according to the second penalty coefficient to meshThe progress processing of mark display unit refers to the figure shown according to the second newly-generated penalty coefficient to display unitAs being modulated or compensating, ambient light of the above method with reference to corresponding to the display unit for Mura occurBy force, the first penalty coefficient for Mura display unit occur is handled, obtains the second compensation systemNumber, and carry out De-Mura processing when according to the second penalty coefficient to there is Mura display unitDe-Mura processing is carried out, therefore in the scheme that the application is provided, is carrying out De-Mura processingThe further influence for having taken into account the Mura defects that environmental light intensity is produced to display unit, so that rootAccording to the degree of strength of ambient light, De-Mura treatment effects are adjusted, make image quality and the display of display screenEffect promoting.
Optionally, processing unit 42 is additionally operable to be adjusted according to the adjusted value of target display unit brightness degreeWhole first penalty coefficient；According to the corresponding environmental light intensity of target display unit and the first compensation after adjustmentCoefficient, obtains the second penalty coefficient.
By the adjusted value of combining target display unit brightness degree, the target display after being adjusted is singleFirst penalty coefficient corresponding to first brightness degree, equivalent to only need in De-Mura look-up tables setCorresponding first penalty coefficient of one group of normal brightness, when display unit brightness degree changes, directlyThe first penalty coefficient that needs are worth to according to the adjustment of display unit brightness degree is connect, without to be everyOne brightness degree sets a penalty coefficient.The above is mended in De-Mura look-up tables are not changedOn the premise of repaying number of coefficients, the first penalty coefficient is adjusted according to the adjustment of brightness degree, fromAnd De-Mura treatment effects are adjusted, De-Mura treatment effects are optimized, and reduce De-MuraThe occupancy to resource is handled, De-Mura treatment effeciencies are improved, the image quality and display for making display screen are imitatedFruit is lifted.
Optionally, processing unit 42 is additionally operable to be adjusted according to the adjusted value of target display unit brightness degreeWhole second penalty coefficient.Compensating unit 43 is additionally operable to according to the second penalty coefficient after adjustment to targetDisplay unit is handled.
By the adjusted value of combining target display unit brightness degree, the target display after being adjusted is singleSecond penalty coefficient corresponding to first brightness degree, when display unit brightness degree changes, directlySecond penalty coefficient of needs is worth to according to the adjustment of display unit brightness degree, without when displayNeed to inquire about under corresponding bright grade in De-Mura look-up tables when unit brightness degree changesThe first penalty coefficient.The above is before penalty coefficient quantity in not changing De-Mura look-up tablesPut, the second penalty coefficient is adjusted according to the adjustment of brightness degree, so as to adjust De-MuraTreatment effect, optimizes De-Mura treatment effects, and reduces occupancy of the De-Mura processing to resource,De-Mura treatment effeciencies are improved, the image quality and display effect for making display screen are lifted.
Optionally, shown in reference picture 5, the device also includes piecemeal sampling unit 44, for displayScreen block generates matrix of display elements, and obtaining the target to matrix of display elements sampling shows singleMember.
Optionally, processing unit 42 is additionally operable to the second penalty coefficient according to target display unit, leads toThe second of the other display unit crossed between two adjacent target display units of interpolation calculationPenalty coefficient；Compensating unit is additionally operable to：It is aobvious to other according to the second penalty coefficient of other display unitShow that unit is handled.
By the way that display screen is pressed into piecemeal generator matrix unit, target is obtained to matrix of display elements samplingDisplay unit, the second compensation system of other units adjacent with target display unit is obtained by differential techniqueNumber, on the premise of the display unit quantity of De-Mura processing is not reduced, makes the compensation of acquisition second systemThe first penalty coefficient quantity required for number is reduced as far as possible, and then is made in required De-Mura look-up tablesComprising penalty coefficient quantity reduce as far as possible, reduce accounting for for resource in De-Mura processing methodsWith.
Further, compensating unit 43 is right specifically for when the second penalty coefficient is more than preset valueTarget display unit brightness is lifted；When the second penalty coefficient is less than preset value, to the targetDisplay unit brightness is suppressed.Wherein preset value is that target display unit or other display unit are not depositedThe value of penalty coefficient in Mura.
Embodiments of the invention provide a kind of display device, including：Display device, and above-mentioned implementationThe elimination display device Mura devices that example is provided.The display device can be：Electronic Paper, mobile phone,Any tool such as tablet personal computer, television set, display, notebook computer, DPF, navigatorThere are the product or part of display function.
The display device that embodiments of the invention are provided, applied to display screen, wherein display screenIncluding the display unit by matrix distribution, each display unit includes at least one pixel cell, eliminatesDisplay device Mura devices can obtain the corresponding environmental light intensity of target display unit；And obtain theOne penalty coefficient, wherein the first penalty coefficient be with reference to De-Mura look-up tables, display unit mark,The brightness degree of display unit is obtained, and DE-Mura look-up tables comprise at least display unit and identified with compensatingThe corresponding relation of coefficient；Then according to the corresponding environmental light intensity of target display unit and the described first compensationCoefficient, obtains the second penalty coefficient；Finally eliminate display device Mura devices is according to the second compensationIt is several that target display unit is handled, target display unit is carried out here according to the second penalty coefficientProcessing, which refers to, to be modulated or mends to the image that display unit is shown according to the second newly-generated penalty coefficientRepay, environmental light intensity of the above method with reference to corresponding to the display unit for Mura occur, to there is MuraThe first penalty coefficient of display unit handled, obtain the second penalty coefficient, and carrying outDe-Mura is carried out to there is Mura display unit according to the second penalty coefficient during De-Mura processingProcessing, therefore be further consideration carrying out De-Mura processing in the scheme that the application is providedThe influence for the Mura defects that environmental light intensity is produced to display unit is entered, so that according to the strong of ambient lightWeak degree, adjusts De-Mura treatment effects, and the image quality and display effect for making display screen are lifted.
, wherein it is desired to which the unit in explanation, the present embodiment can be the place individually set upDevice or sensor are managed, can also be integrated in some processor or sensor and realize, in addition,Can be in the memory that touch point identifying device is stored in the form of program code, to be adjusted by processorWith and perform the function of above unit.Processor described here can be a center processingDevice (English full name：Central Processing Unit, English abbreviation：), or quilt CPUIt is configured to implement one or more integrated circuits (English full name of the embodiment of the present invention：IntegratedCircuit, English abbreviation：IC)；Sensor can be an electronic component, or multiple electricityThe circuit structure of subcomponent composition, or be configured to implement the one or more of the embodiment of the present inventionIntegrated circuit.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is notBe confined to this, any one skilled in the art the invention discloses technical scopeIt is interior, change or replacement can be readily occurred in, should be all included within the scope of the present invention.Therefore,Protection scope of the present invention should be based on the protection scope of the described claims.